TW201709027A - Touch sensitive system and apparatus and method for measuring signals of touch sensitive screen - Google Patents
Touch sensitive system and apparatus and method for measuring signals of touch sensitive screen Download PDFInfo
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- TW201709027A TW201709027A TW104127423A TW104127423A TW201709027A TW 201709027 A TW201709027 A TW 201709027A TW 104127423 A TW104127423 A TW 104127423A TW 104127423 A TW104127423 A TW 104127423A TW 201709027 A TW201709027 A TW 201709027A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04111—Cross over in capacitive digitiser, i.e. details of structures for connecting electrodes of the sensing pattern where the connections cross each other, e.g. bridge structures comprising an insulating layer, or vias through substrate
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Abstract
Description
本發明係關於觸控屏,特別係關於控制前端模組的參數以平準化觸摸屏的技術。 The present invention relates to touch screens, and more particularly to techniques for controlling parameters of front end modules to level the touch screen.
觸控面板或觸摸屏已經是現代電子裝置主要的輸出入裝置之一,在本申請當中,統一使用觸摸屏一詞來表示不會顯示的觸控面板或會顯示的觸控螢幕。電容式觸摸屏是透過與人體間的電容性耦合,造成偵測信號產生變化,從而判斷出人體在電容式觸摸屏上碰觸的位置。當人體碰觸時,人體所處環境的雜訊也會隨著人體與電容式觸摸屏間的電容性耦合注入,也對偵測信號產生變化。又由於雜訊不斷在變化,並不容易被預測,當訊噪比較小時,容易造成判斷不出碰觸,或判斷出的碰觸位置偏差。 The touch panel or the touch screen is already one of the main input and output devices of modern electronic devices. In the present application, the term touch screen is used uniformly to indicate a touch panel that is not displayed or a touch screen that is displayed. The capacitive touch screen is a capacitive coupling between the human body and the human body, causing a change in the detection signal to determine the position of the human body on the capacitive touch screen. When the human body touches, the noise of the environment in which the human body is located is also injected with the capacitive coupling between the human body and the capacitive touch screen, and also changes the detection signal. Since the noise is constantly changing, it is not easy to be predicted. When the noise is relatively small, it is easy to make no judgment or touch the positional deviation.
此外,由於信號經過一些負載電路,如經過電容性耦合,偵測導電條收到的信號與提供給驅動導電條前的信號會產生相位差。當驅動信號的週期都相同時,不同的相位差表示信號延遲不同的時間被收到,如果忽視前述的相位差直接偵測信號,會造成信號量測的開始相位不同而產生不同結果。如果對應不同導電條量測的結果差異很大時,會造成難以判斷出正確的位置。 In addition, since the signal passes through some load circuit, such as capacitive coupling, the phase difference between the signal received by the detecting strip and the signal supplied to the driving strip is generated. When the periods of the driving signals are the same, different phase differences indicate that the signal delays are received at different times. If the phase difference is directly ignored, the starting phase of the signal measurement is different and different results are generated. If the results of the measurements corresponding to different conductive strips are very different, it will be difficult to determine the correct position.
此外,相對於不同的驅動導電條,驅動信號經過的電阻電容電路的阻值也可能不同,會造成互電容式偵測時由觸摸屏取得的影像的值高高低低,不利於偵測。 In addition, the resistance of the resistor-capacitor circuit through which the driving signal passes may be different with respect to different driving strips, which may cause the image obtained by the touch screen to be high or low during mutual capacitance detection, which is not conducive to detection.
由此可見,上述現有技術顯然存在有不便與缺陷,而極待加以進一步改進。為了解決上述存在的問題,相關廠商莫不費盡心思來謀求解決之道,但長久以來一直未見適用的設計被發展完成,而一般產品及方法又沒有適切的結構及方法能夠解決上述問題,此顯然是相關業者急欲解決的問題。因此如何能創設一種新的技術,實屬當前重要研發課題之一,亦成為當前業界極需改進的目標。 It can be seen that the above prior art obviously has inconveniences and defects, and needs to be further improved. In order to solve the above problems, the relevant manufacturers do not bother to find a solution, but the design that has not been applied for a long time has been developed, and the general products and methods have no suitable structure and methods to solve the above problems. Obviously it is an issue that the relevant industry is anxious to solve. Therefore, how to create a new technology is one of the current important research and development topics, and it has become the goal that the industry needs to improve.
在本發明的一實施例當中,提供一種觸摸屏的信號量測裝置。上述的觸摸屏包含平行排列的多條驅動導電條與平行排列的多條偵測導電條組成的多條導電條。所述的驅動導電條與所述的偵測導電條交疊於多個交疊區。該信號量測裝置包含:一驅動電路與一偵測電路。該驅動電路依序提供一第一驅動信號與一第二驅動信號給一第一組該驅動導電條與一第二組該驅動導電條。該偵測電路依序偵測由該至少一偵測導電條的信號分別產生相應於該第一驅動信號與該第二驅動信號的一第一信號與一第二信號。其中,所述第一驅動信號的驅動時間不同於所述第二驅動信號的驅動時間。 In an embodiment of the invention, a signal measuring device for a touch screen is provided. The touch screen comprises a plurality of conductive strips arranged in parallel and a plurality of conductive strips arranged in parallel. The driving conductive strip overlaps the detecting conductive strip at a plurality of overlapping regions. The signal measuring device comprises: a driving circuit and a detecting circuit. The driving circuit sequentially supplies a first driving signal and a second driving signal to a first group of the driving conductive strips and a second group of the driving conductive strips. The detecting circuit sequentially detects, by the signals of the at least one detecting conductive strip, a first signal and a second signal corresponding to the first driving signal and the second driving signal, respectively. The driving time of the first driving signal is different from the driving time of the second driving signal.
在本發明的另一實施例中,提供一種觸摸屏的信號量測方法。上述的觸摸屏包含平行排列的多條驅動導電條與平行排列的多條偵測導電條組成的多條導電條。所述的驅動導電條與所述的偵測導電條交疊於 多個交疊區。該信號量測方法包含:依序提供一第一驅動信號與一第二驅動信號給一第一組該驅動導電條與一第二組該驅動導電條;以及依序偵測由該至少一偵測導電條的信號分別產生相應於該第一驅動信號與該第二驅動信號的一第一信號與一第二信號,其中,所述第一驅動信號的驅動時間不同於所述第二驅動信號的驅動時間。 In another embodiment of the present invention, a signal measurement method of a touch screen is provided. The touch screen comprises a plurality of conductive strips arranged in parallel and a plurality of conductive strips arranged in parallel. The driving conductive strip overlaps with the detecting conductive strip Multiple overlapping zones. The signal measurement method includes: sequentially providing a first driving signal and a second driving signal to a first group of the driving conductive strips and a second group of the driving conductive strips; and sequentially detecting the at least one detecting The signals of the conductive strips respectively generate a first signal and a second signal corresponding to the first driving signal and the second driving signal, wherein a driving time of the first driving signal is different from the second driving signal Drive time.
在本發明的一實施例當中,提供一種觸摸屏的信號量測裝置。上述的觸摸屏包含平行排列的多條驅動導電條與平行排列的多條偵測導電條組成的多條導電條。所述的驅動導電條與所述的偵測導電條交疊於多個交疊區。該信號量測裝置包含:一驅動電路與一偵測電路。該驅動電路依序提供一第一驅動信號與一第二驅動信號給一第一組該驅動導電條與一第二組該驅動導電條。該偵測電路依序偵測由該至少一偵測導電條的信號分別產生相應於該第一驅動信號與該第二驅動信號的一第一信號與一第二信號。其中至少下列條件的其中之一或其任意組合成立:所述偵測電路經由一可變電阻連接到該至少一偵測導電條,所述偵測電路產生該第一信號時,該可變電阻被設定為一第一電阻值,所述偵測電路產生該第二信號時,該可變電阻被設定為一第二電阻值,該第一電阻值不同於該第二電阻值;所述偵測電路使用了一第一偵測時間長度產生該第一信號,所述偵測電路使用了一第二偵測時間長度產生該第二信號,其中該第一偵測時間長度不同於該第二偵測時間長度;所述偵測電路經由一放大器連接至至少一該偵測導電條,所述偵測電路產生該第一信號時,該放大器被設定為一第一倍率值,所述偵測電路產生該第二信號時,該放大器被設定為一第二倍率值,該第一倍率值不同於該第二倍率值;所述偵測電路經過了一第一延 遲相位差後產生該第一信號,所述偵測電路經過了一第二延遲相位差後產生該第二信號,其中該第一延遲相位差不同於該第二延遲相位差;所述第一驅動信號的電位不同於該第二驅動信號的電位;提供所述第一驅動信號的一第一驅動時機點不同於提供所述第二驅動信號的一第二驅動時機點;以及所述第一驅動信號的驅動時間不同於所述第二驅動信號的驅動時間。 In an embodiment of the invention, a signal measuring device for a touch screen is provided. The touch screen comprises a plurality of conductive strips arranged in parallel and a plurality of conductive strips arranged in parallel. The driving conductive strip overlaps the detecting conductive strip at a plurality of overlapping regions. The signal measuring device comprises: a driving circuit and a detecting circuit. The driving circuit sequentially supplies a first driving signal and a second driving signal to a first group of the driving conductive strips and a second group of the driving conductive strips. The detecting circuit sequentially detects, by the signals of the at least one detecting conductive strip, a first signal and a second signal corresponding to the first driving signal and the second driving signal, respectively. At least one of the following conditions or any combination thereof is established: the detecting circuit is connected to the at least one detecting conductive strip via a variable resistor, and the variable resistor is generated when the detecting circuit generates the first signal When the detecting circuit generates the second signal, the variable resistor is set to a second resistance value, and the first resistance value is different from the second resistance value; The measuring circuit generates the first signal by using a first detection time length, and the detecting circuit generates the second signal by using a second detection time length, wherein the first detection time length is different from the second Detecting the length of time; the detecting circuit is connected to at least one detecting conductive strip via an amplifier, and when the detecting circuit generates the first signal, the amplifier is set to a first magnification value, and the detecting When the circuit generates the second signal, the amplifier is set to a second magnification value, the first magnification value is different from the second magnification value; the detection circuit passes a first extension Generating the first signal after the late phase difference, the detecting circuit generates the second signal after a second delay phase difference, wherein the first delay phase difference is different from the second delay phase difference; a potential of the driving signal is different from a potential of the second driving signal; a first driving timing point for providing the first driving signal is different from a second driving timing point for providing the second driving signal; and the first The driving time of the driving signal is different from the driving time of the second driving signal.
在本發明的另一實施例中,提供一種觸摸屏的信號量測方法。上述的觸摸屏包含平行排列的多條驅動導電條與平行排列的多條偵測導電條組成的多條導電條。所述的驅動導電條與所述的偵測導電條交疊於多個交疊區。該信號量測方法包含:依序提供一第一驅動信號與一第二驅動信號給一第一組該驅動導電條與一第二組該驅動導電條;以及依序偵測由該至少一偵測導電條的信號分別產生相應於該第一驅動信號與該第二驅動信號的一第一信號與一第二信號,其中至少下列條件的其中之一或其任意組合成立:所述偵測電路經由一可變電阻連接到該至少一偵測導電條,所述偵測電路產生該第一信號時,該可變電阻被設定為一第一電阻值,所述偵測電路產生該第二信號時,該可變電阻被設定為一第二電阻值,該第一電阻值不同於該第二電阻值;所述偵測電路使用了一第一偵測時間長度產生該第一信號,所述偵測電路使用了一第二偵測時間長度產生該第二信號,其中該第一偵測時間長度不同於該第二偵測時間長度;所述偵測電路經由一放大器連接至至少一該偵測導電條,所述偵測電路產生該第一信號時,該放大器被設定為一第一倍率值,所述偵測電路產生該第二信號時,該放大器被設定為一第二倍率值,該第一倍率值不同於該第二倍率值;所述偵測電路經過了一第一延遲相位差後產生該第一信號,所述偵測電路經 過了一第二延遲相位差後產生該第二信號,其中該第一延遲相位差不同於該第二延遲相位差;所述第一驅動信號的電位不同於該第二驅動信號的電位;提供所述第一驅動信號的一第一驅動時機點不同於提供所述第二驅動信號的一第二驅動時機點;以及所述第一驅動信號的驅動時間不同於所述第二驅動信號的驅動時間。 In another embodiment of the present invention, a signal measurement method of a touch screen is provided. The touch screen comprises a plurality of conductive strips arranged in parallel and a plurality of conductive strips arranged in parallel. The driving conductive strip overlaps the detecting conductive strip at a plurality of overlapping regions. The signal measurement method includes: sequentially providing a first driving signal and a second driving signal to a first group of the driving conductive strips and a second group of the driving conductive strips; and sequentially detecting the at least one detecting The signals of the conductive strips respectively generate a first signal and a second signal corresponding to the first driving signal and the second driving signal, wherein at least one of the following conditions or any combination thereof is established: the detecting circuit Connected to the at least one detecting conductive strip via a variable resistor, wherein the detecting circuit generates the first signal, the variable resistor is set to a first resistance value, and the detecting circuit generates the second signal When the variable resistor is set to a second resistance value, the first resistance value is different from the second resistance value; the detecting circuit generates the first signal by using a first detection time length, The detecting circuit generates the second signal by using a second detecting time length, wherein the first detecting time length is different from the second detecting time length; the detecting circuit is connected to at least one detective via an amplifier Measuring the conductive strip, When the detecting circuit generates the first signal, the amplifier is set to a first magnification value, and when the detecting circuit generates the second signal, the amplifier is set to a second magnification value, and the first magnification value is Different from the second multiplying value; the detecting circuit generates the first signal after a first delay phase difference, and the detecting circuit passes the Generating the second signal after a second delay phase difference, wherein the first delay phase difference is different from the second delay phase difference; a potential of the first driving signal is different from a potential of the second driving signal; a first driving timing point of the first driving signal is different from a second driving timing point of providing the second driving signal; and driving time of the first driving signal is different from driving of the second driving signal time.
在本發明的一實施例中,提供了一種觸控系統,包含上述的觸摸屏與信號量測裝置。 In an embodiment of the invention, a touch system is provided, comprising the above touch screen and signal measuring device.
11‧‧‧時脈電路 11‧‧‧ clock circuit
12‧‧‧脈衝寬度調整電路 12‧‧‧ Pulse width adjustment circuit
131‧‧‧驅動開關 131‧‧‧Drive Switch
132‧‧‧偵測開關 132‧‧‧Detection switch
141‧‧‧驅動選擇電路 141‧‧‧Drive selection circuit
142‧‧‧偵測選擇電路 142‧‧‧Detection selection circuit
151‧‧‧驅動電極 151‧‧‧ drive electrodes
152‧‧‧偵測電極 152‧‧‧Detection electrode
16‧‧‧可變電阻 16‧‧‧Variable resistor
17‧‧‧放大電路 17‧‧‧Amplification circuit
18‧‧‧量測電路 18‧‧‧Measurement circuit
19‧‧‧外部導電物件 19‧‧‧External conductive objects
41‧‧‧驅動電路 41‧‧‧Drive circuit
42‧‧‧偵測電路 42‧‧‧Detection circuit
43‧‧‧儲存電路 43‧‧‧Storage circuit
44‧‧‧頻率設定 44‧‧‧ Frequency setting
45‧‧‧控制電路 45‧‧‧Control circuit
51‧‧‧完整影像 51‧‧‧Complete image
52‧‧‧單電極驅動的壹維度感測資訊 52‧‧‧Single-electrode-driven 壹 dimensional sensing information
62‧‧‧雙電極驅動的壹維度感測資訊 62‧‧‧Two-electrode driven 壹 dimensional sensing information
61‧‧‧內縮影像 61‧‧‧Retracted image
71‧‧‧外擴影像 71‧‧‧Extended image
721‧‧‧第一側單電極驅動的壹維度感測資訊 721‧‧‧1st single-electrode driven 壹 dimensional sensing information
722‧‧‧第二側單電極驅動的壹維度感測資訊 722‧‧‧Second-side single-electrode driven 壹 dimensional sensing information
1310‧‧‧控制模組 1310‧‧‧Control Module
1340‧‧‧前端模組 1340‧‧‧ Front End Module
1341‧‧‧驅動模組 1341‧‧‧Drive Module
1342‧‧‧偵測模組 1342‧‧‧Detection module
1500‧‧‧觸摸屏 1500‧‧‧ touch screen
1510,1510a~1510k‧‧‧第一電極 1510, 1510a~1510k‧‧‧ first electrode
1590,1590ab~1590kl‧‧‧間距 1590, 1590ab~1590kl‧‧‧ spacing
1600‧‧‧觸摸屏 1600‧‧‧ touch screen
1610,1610a,1610z‧‧‧第一電極 1610, 1610a, 1610z‧‧‧ first electrode
1702,1704,1706‧‧‧位置 1702, 1704, 1706‧‧‧ position
1710,1710a~1710d‧‧‧第一電極 1710, 1710a~1710d‧‧‧ first electrode
1712‧‧‧導電片 1712‧‧‧Electrical sheet
1722‧‧‧導電片 1722‧‧‧Conductor
1724‧‧‧導電片 1724‧‧‧Conductor
1732‧‧‧導電片 1732‧‧‧Conductor
1734‧‧‧導電片 1734‧‧‧Conductor
1810,1810a~1810d‧‧‧第一電極 1810, 1810a~1810d‧‧‧ first electrode
1820,1820a~1820d‧‧‧第二電極S驅動信號 1820, 1820a~1820d‧‧‧Second electrode S drive signal
圖1與圖4為本發明的電容式觸模屏及其控制電路的示意圖;圖2A為單電極驅動模式的示意圖;圖2B及圖2C的雙電極驅動模式的示意圖;圖3A及圖3B為本發明的偵測電容式觸摸屏的偵測方法的流程示意圖;圖5為產生完整影像的示意圖;圖6為產生內縮影像的示意圖;圖7A與圖7B為產生外擴影像的示意圖;圖8為本發明產生外擴影像的流程示意圖;圖9A與圖9B為驅動信號經由不同驅動導電條產生不同相位差的示意圖;圖10與圖11為依據本發明的第一實施例的觸摸屏的信號量測方法的流程示意圖;圖12依據本發明的另一觸摸屏的信號量測方法的流程示意圖;圖13為根據本發明一實施例的觸控系統之方塊示意圖; 圖14A-14D為根據本發明一實施例的觸摸屏的信號量測方法;圖15為根據本申請一實施例的觸摸屏之電極結構的一示意圖;圖16為根據本申請一實施例的觸摸屏之電極結構的一示意圖;圖17為根據本申請一實施例的觸摸屏之部分電極結構的一示意圖;圖18為根據本申請一實施例的觸摸屏之部分電極結構的一示意圖。 1 and FIG. 4 are schematic diagrams of a capacitive touch screen and a control circuit thereof according to the present invention; FIG. 2A is a schematic diagram of a single-electrode driving mode; FIG. 2B and FIG. 2C are schematic diagrams of a two-electrode driving mode; FIG. 3A and FIG. FIG. 5 is a schematic diagram of generating a complete image; FIG. 6 is a schematic diagram of generating a retracted image; FIG. 7A and FIG. 7B are schematic diagrams of generating an expanded image; FIG. 8 is a schematic diagram of a method for detecting a capacitive touch screen; FIG. FIG. 9A and FIG. 9B are schematic diagrams showing different phase differences of driving signals via different driving conductive strips; FIG. 10 and FIG. 11 are signal semaphores of the touch screen according to the first embodiment of the present invention; FIG. 12 is a block diagram of a touch measurement system according to another embodiment of the present invention; FIG. 13 is a block diagram of a touch control system according to an embodiment of the invention; 14A-14D are schematic diagrams of a signal measurement method of a touch screen according to an embodiment of the invention; FIG. 15 is a schematic diagram of an electrode structure of a touch screen according to an embodiment of the present invention; and FIG. 16 is an electrode of a touch screen according to an embodiment of the present application. FIG. 17 is a schematic diagram of a portion of an electrode structure of a touch screen according to an embodiment of the present application; and FIG. 18 is a schematic diagram of a portion of an electrode structure of a touch screen according to an embodiment of the present application.
本發明將詳細描述一些實施例如下。然而,除了所揭露的實施例外,本發明亦可以廣泛地運用在其他的實施例施行。本發明的範圍並不受該些實施例的限定,乃以其後的申請專利範圍為準。而為提供更清楚的描述及使熟悉該項技藝者能理解本發明的發明內容,圖示內各部分並沒有依照其相對的尺寸而繪圖,某些尺寸與其他相關尺度的比例會被突顯而顯得誇張,且不相關的細節部分亦未完全繪出,以求圖示的簡潔。 The invention will be described in detail below with some embodiments. However, the invention may be applied to other embodiments in addition to the disclosed embodiments. The scope of the present invention is not limited by the embodiments, which are subject to the scope of the claims. To provide a clearer description and to enable those skilled in the art to understand the invention, the various parts of the drawings are not drawn according to their relative dimensions, and the ratio of certain dimensions to other related dimensions will be highlighted. The exaggerated and irrelevant details are not completely drawn to illustrate the simplicity of the illustration.
電容式觸摸屏很容易受到雜訊干擾,尤其是來自於觸摸於觸摸屏的人體。本發明採用調適性的驅動與/或偵測方式來達到降低雜訊干擾的目的。 Capacitive touch screens are susceptible to noise interference, especially from the human body that touches the touch screen. The invention adopts an adaptive driving and/or detecting method to achieve the purpose of reducing noise interference.
在電容式觸摸屏中,包括複數條縱向與橫向排列的電極,用來偵測觸摸的位置,其中電力的消耗與同時間驅動的電極數及驅動的電壓正相關。在進行觸摸偵測時,雜訊可能會隨著觸摸的導體傳導至電容式觸摸屏,使得訊噪比(S/N ratio)變差,容易造成觸摸的誤判與位置偏差。換言之,訊噪比會隨著觸摸的對象與所處的環境動態改變。 In a capacitive touch screen, a plurality of electrodes arranged longitudinally and laterally are used to detect the position of the touch, wherein the power consumption is positively correlated with the number of electrodes driven at the same time and the voltage of the driving. When performing touch detection, the noise may be transmitted to the capacitive touch screen along with the touched conductor, so that the signal-to-noise ratio (S/N ratio) is deteriorated, which may easily cause misjudgment and positional deviation of the touch. In other words, the signal-to-noise ratio changes dynamically with the object being touched and the environment in which it is located.
請參照圖1,是本發明的電容式觸模屏及其控制電路的示意圖,包括一時脈電路11、一脈衝寬度調變電路12、一驅動開關131、一偵測 開關132、一驅動選擇電路141、一偵測選擇電路142、至少一驅動電極151、至少一偵測電極152、一可變電阻16、一放大電路17與一量測電路18。電容式觸摸屏可以包括多條驅動電極151與多條偵測電極152,所述驅動電極151與所述偵測電極152交疊於多個交疊處。 Please refer to FIG. 1 , which is a schematic diagram of a capacitive touch screen and a control circuit thereof, including a clock circuit 11 , a pulse width modulation circuit 12 , a driving switch 131 , and a detection The switch 132, a driving selection circuit 141, a detection selection circuit 142, at least one driving electrode 151, at least one detecting electrode 152, a variable resistor 16, an amplifying circuit 17, and a measuring circuit 18. The capacitive touch screen may include a plurality of driving electrodes 151 and a plurality of detecting electrodes 152, and the driving electrodes 151 and the detecting electrodes 152 overlap at a plurality of overlapping portions.
時脈電路11提供依據一工作頻率提供整個系統的一時脈信號,並且脈衝寬度調變電路12依據時脈信號與一脈衝寬度調變參數提供一脈衝寬度調變信號,以驅動上述的驅動電極151。驅動開關131控制驅動電極151的驅動,並且是由驅動選擇電路141選擇至少一條驅動電極151。此外,偵測開關132控制驅動電極與量測電路18之間的電性耦合。當驅動開關131為導通(on)時,偵測開關132為斷開(off),脈衝寬度調變信號經由驅動選擇電路141提供給被驅動選擇電路141耦合的驅動電極151,其中驅動電極151可以是多條,而被選擇的驅動電極151可以是所述驅動電極151中的一條、兩條、或多條。當驅動電極151被脈衝寬度調變信號驅動時,偵測電極152與被驅動的驅動電極151交疊的交疊處會產生電容性耦合,並且每一條偵測電極152在與驅動電極151電容性耦合時提供一輸入信號。可變電阻16是依據一電阻參數提供一阻抗,輸入信號是經由可變電阻16提供給偵測選擇電路142,偵測選擇電路142由多條偵測電極152中選擇一條、兩條、三條、多條或全部偵測電極152耦合於放大電路17,輸入信號是經由放大電路17依據一增益參數後提供給量測電路18。量測電路18是依據脈衝寬度調變信號及時脈信號偵測輸入信號,其中量測電路18可以是依據一相位參數於至少一相位為偵測信號進行取樣,例如量測電路18可以是具有至少一積分電路,每一個積分電路分別依據相位參數於至少一相位對所述輸入信號中的一輸入信號進行積 分,以量測輸入信號的大小。在本發明的一範例中,每一個積分電路還可以是分別依據相位參數於至少一相位對所述輸入信號中的一對輸入信號的信號差進行積分,或者是分別依據相位參數於至少一相位對所述輸入信號中的兩對輸入信號的信號差的差進行積分。此外,量測電路18還可以包含至少一類比轉數位電路(ADC)將積分電路所偵測出來的結果轉成數位信號。另外,本技術領具有通常知識的普通技術人員可以推知,前述的輸入信號可以是先經過放大電路17放大後再由偵測選擇電路142提供給量測電路18,本發明並不加以限制。 The clock circuit 11 provides a clock signal for providing the entire system according to an operating frequency, and the pulse width modulation circuit 12 provides a pulse width modulation signal according to the clock signal and a pulse width modulation parameter to drive the driving electrode. 151. The drive switch 131 controls the driving of the drive electrode 151, and at least one drive electrode 151 is selected by the drive selection circuit 141. In addition, the detection switch 132 controls the electrical coupling between the drive electrode and the measurement circuit 18. When the driving switch 131 is on, the detecting switch 132 is off, and the pulse width modulation signal is supplied to the driving electrode 151 coupled by the driving selection circuit 141 via the driving selection circuit 141, wherein the driving electrode 151 can be There are a plurality of strips, and the selected driving electrodes 151 may be one, two, or a plurality of the driving electrodes 151. When the driving electrode 151 is driven by the pulse width modulation signal, the overlapping of the detecting electrode 152 and the driven driving electrode 151 overlaps, and each detecting electrode 152 is capacitive with the driving electrode 151. An input signal is provided when coupled. The variable resistor 16 provides an impedance according to a resistance parameter, and the input signal is supplied to the detection selection circuit 142 via the variable resistor 16. The detection selection circuit 142 selects one, two, and three of the plurality of detection electrodes 152. A plurality of or all of the detecting electrodes 152 are coupled to the amplifying circuit 17, and the input signals are supplied to the measuring circuit 18 via the amplifying circuit 17 according to a gain parameter. The measurement circuit 18 detects the input signal according to the pulse width modulation signal and the pulse signal. The measurement circuit 18 can sample the detection signal according to at least one phase according to a phase parameter. For example, the measurement circuit 18 can have at least An integrating circuit, each integrating circuit respectively accumulating an input signal of the input signal in at least one phase according to a phase parameter Points to measure the size of the input signal. In an example of the present invention, each of the integrating circuits may further integrate the signal difference of the pair of input signals in the input signal according to the phase parameter, or respectively according to the phase parameter, and at least one phase according to the phase parameter respectively. Integrating the difference in signal differences of the two pairs of input signals in the input signal. In addition, the measurement circuit 18 can also include at least one analog-to-digital circuit (ADC) to convert the result detected by the integration circuit into a digital signal. In addition, one of ordinary skill in the art can deduce that the aforementioned input signal may be first amplified by the amplifying circuit 17 and then supplied to the measuring circuit 18 by the detecting and selecting circuit 142, which is not limited by the present invention.
在本發明中,電容式觸摸屏有至少兩種驅動模式,分為最省電的單電極驅動模式、雙電極驅動模式,並且有至少一種驅動電位。每一種驅動模式相應於不同的驅動電位都有至少一種工作頻率,每一種工作頻率對應一組參數,並且每一種驅動模式相應於不同的驅動電位代表不同程度的電力消耗。 In the present invention, the capacitive touch screen has at least two driving modes, which are divided into a most power-saving single-electrode driving mode, a two-electrode driving mode, and have at least one driving potential. Each of the drive modes has at least one operating frequency corresponding to different drive potentials, each of which corresponds to a set of parameters, and each of the drive modes represents a different degree of power consumption corresponding to a different drive potential.
電容式觸摸屏的電極可以分為多條驅動電極151與多條偵測電極152,所述驅動電極151與所述偵測電極152交疊於多個交疊處(intersection)。請參照圖2A,在單電極驅動模式中,一次驅動一條驅動電極151,也就是在同一時間只有一條驅動電極151被提供驅動信號S,在任一條驅動電極151被驅動時,偵測所有偵測電極152的信號以產生一壹維度感測資訊。據此,在驅動所有驅動電極151後,可以得到相應於每一條驅動電極151的壹維度感測資訊,以構成相對於所有交疊處的一完整影像。 The electrode of the capacitive touch screen can be divided into a plurality of driving electrodes 151 and a plurality of detecting electrodes 152, and the driving electrodes 151 and the detecting electrodes 152 overlap at a plurality of intersections. Referring to FIG. 2A, in the single-electrode driving mode, one driving electrode 151 is driven at a time, that is, only one driving electrode 151 is supplied with the driving signal S at the same time, and when any driving electrode 151 is driven, all detecting electrodes are detected. The signal of 152 is used to generate a dimensional sense sensing information. Accordingly, after driving all of the driving electrodes 151, the pupil dimensional sensing information corresponding to each of the driving electrodes 151 can be obtained to constitute a complete image with respect to all the overlapping portions.
請參照圖2B與2C,在雙電極驅動模式中,一次驅動相鄰的一對驅動電極151。換言之,n條的驅動電極151共要驅動n-1次,並且在任一 對驅動電極151被驅動時,偵測所有偵測電極152的信號以產生一壹維度感測資訊。例如,首先如圖2B,同時提供驅動信號S給第一對驅動電極151,如果有5條,就要驅動4次。接下來,如圖2C所示,同時提供驅動信號S給第二對驅動電極151,以此類推。據此,在驅動每一對驅動電極151(共n-1對)後,可以得到相應於每一對驅動電極151的壹維度感測資訊,以構成相對於前述完整影像的一內縮影像,內縮影像的像素數量小於完整影像的像素數量。在本發明的另一範例中,雙電極驅動模式更包括分別對兩側驅動電極151進行單電極驅動,並且在任一側單驅動電極151被驅動時,偵測所有偵測電極152的信號以產生一壹維度感測資訊,以額外提供兩個壹維度感測資訊,與內縮影像組成一外擴影像。例如相應於兩側的壹維度感測資訊分別置於內縮影像的兩側外以組成外擴影像。 Referring to FIGS. 2B and 2C, in the two-electrode driving mode, adjacent pairs of driving electrodes 151 are driven at a time. In other words, the n driving electrodes 151 are driven a total of n-1 times, and in either When the driving electrode 151 is driven, the signals of all the detecting electrodes 152 are detected to generate a dimensional sensing information. For example, first, as shown in FIG. 2B, a driving signal S is simultaneously supplied to the first pair of driving electrodes 151, and if there are five, it is driven four times. Next, as shown in FIG. 2C, the driving signal S is simultaneously supplied to the second pair of driving electrodes 151, and so on. Accordingly, after driving each pair of driving electrodes 151 (total n-1 pairs), the 壹 dimensional sensing information corresponding to each pair of driving electrodes 151 can be obtained to form a retracted image with respect to the complete image. The number of pixels in the indented image is less than the number of pixels in the full image. In another example of the present invention, the two-electrode driving mode further includes performing single-electrode driving on the driving electrodes 151 on both sides, and detecting the signals of all the detecting electrodes 152 to generate signals when the single driving electrodes 151 are driven on either side. A dimension sensing information is provided to provide two additional dimensions of sensing information, and an inflated image to form an expanded image. For example, the 壹 dimensional sensing information corresponding to the two sides is respectively placed on both sides of the retracted image to form an expanded image.
本技術領域具有通常知識的普通人員可以推知,本發明更可以包括三電極驅動模式、四電極驅動模式等等,在此不再贅述。 A person having ordinary knowledge in the art can infer that the present invention can further include a three-electrode driving mode, a four-electrode driving mode, and the like, and details are not described herein again.
前述的驅動電位可以是包含但不限於至少兩種驅動電位,如低驅動電位與高驅動電位,較高的驅動電位具有較高的訊噪比。 The aforementioned driving potential may include, but is not limited to, at least two driving potentials, such as a low driving potential and a high driving potential, and a higher driving potential has a higher signal to noise ratio.
依據前述,在單電極驅動模式中,可取得一完整影像,並且在雙電極驅動模式中,可取得一內縮影像或一外擴影像。完整影像、內縮影或外擴影像可以是在外部導電物件19接近或碰觸電容式觸摸屏前與電容式觸摸屏時取得,藉以產生每個像素的變化量來判斷出外部導電物件19的位置。其中,所述的外部導電物件19可以是一個或多個。亦如前述,外部導電物件19接近或碰觸電容式觸摸屏時,或與所述驅動電極151與所述偵測電極152電容性耦合,而造成雜訊干擾,即使驅動電極151沒有被驅動時,外 部導電物件19也可能與所述驅動電極151與所述偵測電極152電容性耦合。此外,雜訊也可能從其他途徑干擾。 According to the foregoing, in the single electrode driving mode, a complete image can be obtained, and in the two electrode driving mode, a retracted image or an expanded image can be obtained. The complete image, the inner thumbnail or the expanded image may be obtained when the external conductive object 19 approaches or touches the capacitive touch screen and the capacitive touch screen, thereby generating a variation amount of each pixel to determine the position of the external conductive object 19. Wherein, the external conductive object 19 may be one or more. As described above, when the external conductive object 19 approaches or touches the capacitive touch screen, or is capacitively coupled with the driving electrode 151 and the detecting electrode 152, noise interference occurs even when the driving electrode 151 is not driven. outer The conductive member 19 may also be capacitively coupled to the drive electrode 151 and the detecting electrode 152. In addition, noise may also interfere with other channels.
據此,在本發明的一範例中,在進行雜訊偵測程序時,驅動開關131斷開,並且偵測開關132導通,此時量測電路可以依據所述偵測電極152的信號產生一雜訊偵測的壹維度感測資訊,藉以判斷出雜訊干擾是否合乎容許範圍。例如,可以是判斷雜訊偵測的壹維度感測資訊是否有任一值超過一門檻限值,或是雜訊偵測的壹維度感測資訊的所有值的加總或平均是否超過一門檻限值,來判斷雜訊干擾是否合乎容許範圍。本技術領域具有普通知識的技術人員可以推知其他藉由雜訊偵測的壹維度感測資訊判斷出雜訊干擾是否合乎容許範圍的方式,本發明不加以贅述。 Accordingly, in an example of the present invention, when the noise detection process is performed, the driving switch 131 is turned off, and the detecting switch 132 is turned on. At this time, the measuring circuit can generate a signal according to the signal of the detecting electrode 152. The 壹 dimension sensing information of the noise detection is used to determine whether the noise interference is within the allowable range. For example, whether the value of the dimensional sensing information of the noise detection exceeds a threshold value, or whether the sum or average of all the values of the dimensional sensing information of the noise detection exceeds a threshold. Limits to determine if the noise interference is within the acceptable range. A person skilled in the art can infer other ways of determining whether the noise interference is within the allowable range by using the 壹-dimensional sensing information of the noise detection, and the present invention does not describe it.
雜訊偵測程序可以是在系統被啟動時或每一次取得前述完整影像、內縮影像或外擴影像時進行,也可以是定時或經多次取得前述完整影像、內縮影像或外擴影像時進行,或是偵測到有外部導電物件接近或碰觸時進行,本技術領域具有普通知識的技術人員可以推知其他進行雜訊偵測程序的適當時機,本發明並不加以限制。 The noise detection program may be performed when the system is started or each time the complete image, the retracted image or the expanded image is acquired, or the complete image, the retracted image or the expanded image may be obtained periodically or repeatedly. When performing, or detecting that an external conductive object is approaching or touching, a person skilled in the art can infer other appropriate timings for performing the noise detection procedure, and the present invention is not limited thereto.
本發明另外提供一換頻程序,是在判斷雜訊干擾超出容許範圍時進行頻率切換。量測電路被提供多組頻率設定,可以是儲存於一記憶體或其他儲存媒體中,以提供量測電路於換頻程序中選擇,並依據挑選的頻率控制時脈電路11的時脈信號。換頻程序可以是在所述頻率設定逐一挑選出一適當頻率設定,例如逐一挑選其中一組頻率設定並進行雜訊偵測程序,直到偵測出雜訊干擾合乎容許範圍為止。換頻程序也可以是在所述頻率設定逐一挑選出一最佳頻率設定。例如在所述頻率設定逐一挑選並進行 雜訊偵測程序,偵測出其中雜訊干擾最小的頻率設定,如偵測出雜訊偵測的壹維度感測資訊的最大值為最小的頻率設定,或雜訊偵測的壹維度感測資訊的所有值的加總或平均為最小的頻率設定。 The present invention further provides a frequency changing procedure for performing frequency switching when it is determined that the noise interference exceeds the allowable range. The measurement circuit is provided with a plurality of sets of frequency settings, which may be stored in a memory or other storage medium to provide a measurement circuit for selection in the frequency conversion program, and to control the clock signal of the clock circuit 11 according to the selected frequency. The frequency changing procedure may be to select an appropriate frequency setting one by one in the frequency setting, for example, selecting one of the frequency settings one by one and performing a noise detection procedure until the noise interference is detected to be within an allowable range. The frequency changing procedure may also be to select an optimum frequency setting one by one in the frequency setting. For example, the frequency settings are selected one by one and performed The noise detection program detects the frequency setting in which the noise interference is minimal, such as detecting the maximum value of the dimensional sensing information of the noise detection to the minimum frequency setting, or the sense of the dimensionality of the noise detection. The sum or average of all values of the measured information is the minimum frequency setting.
所述的頻率設定對應到包括但不限於一驅動模式、一頻率與一參數組。參數組可以是包括但不限於選自下列集合之群組:前述電阻參數、前述增益參數、前述相位參數與前述脈衝寬度調變參數,本技術領具有通常知識的普通技術人員可以推知其他適用於電容式觸摸屏及其控制電路的相關參數。 The frequency setting corresponds to, but not limited to, a driving mode, a frequency, and a parameter group. The parameter group may be a group including, but not limited to, the following set of parameters: the foregoing resistance parameter, the aforementioned gain parameter, the aforementioned phase parameter, and the aforementioned pulse width modulation parameter, and those skilled in the art having ordinary knowledge may infer that other Capacitive touch screen and related parameters of its control circuit.
所述頻率設定可以是如下列表1所示,包括多個驅動電位,下列以第一驅動電位與第二驅動電位為例,本技術領域具有通常知識的普通人員可以推知可以是有三種以上的驅動電位。每一種驅動電位可以分別有多種驅動模式,包括但不限於選自下列集合之群組:單電極驅動模式、雙電極驅動模式、三電極驅動模式、四電極驅動模式等等。每一種驅動電位相應的每一種驅動模式分別具有複數種頻率,每一種頻率相應於一種前述的參數組。本技術領域具有通常知識的普通人員可以推知每一種驅動電位相應的每一種驅動模式的頻率可以是完全不同,也可以是有部份相同,本發明不加以限制。 The frequency setting may be as shown in the following Table 1, including a plurality of driving potentials. The following is exemplified by the first driving potential and the second driving potential. Those having ordinary knowledge in the art may infer that there may be more than three types of driving. Potential. Each of the driving potentials may have a plurality of driving modes, including but not limited to a group selected from the group consisting of a single electrode driving mode, a two-electrode driving mode, a three-electrode driving mode, a four-electrode driving mode, and the like. Each of the drive modes corresponding to each of the drive potentials has a plurality of frequencies, each of which corresponds to one of the aforementioned parameter sets. Those of ordinary skill in the art can deduce that the frequency of each of the driving modes corresponding to each driving potential may be completely different or partially the same, and the present invention is not limited thereto.
依據上述,本發明提供一種偵測電容式觸摸屏的偵測方法,請參照圖3A。首先如步驟310所示,依據耗電大小依序儲存多個頻率設定,每一個頻率設定分別相應於一種驅動電位的一種驅動模式,並且每一個頻率設定具有一頻率與一參數組,其中驅動電位有至少一種。接下來,如步驟320所示,依據所述頻率設定之一的參數組初始化量測電路的設定,並且如步驟330所示,依據量測電路的一參數組以量測電路偵測來自所述偵測電極的信號,並依據來自所述偵測電極的信號產生一壹維度感測資訊。再接下來,如步驟340所示,依據所述壹維度感測資訊判斷一雜訊的干擾是否超 出一容許範圍。然後,如步驟350所示,在所述雜訊的干擾超過所述容許範圍時,依序依據所述的頻率設定之一的頻率與參數組分別改變所述工作頻率與所述量測電路的設定後產生所述壹維度感測資訊,並且依據所述壹維度感測資訊判斷所述雜訊的干擾是否超出所述容許範圍,直到所述雜訊的干擾未超過程所述容許範圍。也可以是如圖3B的步驟360所示,在所述雜訊的干擾超過所述容許範圍時,依據每一頻率設定的頻率與參數組分別改變所述工作頻率與所述量測電路的設定後產生所述壹維度感測資訊,並且依據所述壹維度感測資訊判斷所述雜訊的干擾,並且以受所述雜訊干擾最低的頻率設定的頻率與參數組分別改變所述工作頻率與所述量測電路的設定。 According to the above, the present invention provides a method for detecting a capacitive touch screen, please refer to FIG. 3A. First, as shown in step 310, a plurality of frequency settings are sequentially stored according to the power consumption, each frequency setting is a driving mode corresponding to a driving potential, and each frequency setting has a frequency and a parameter group, wherein the driving potential There is at least one. Next, as shown in step 320, the setting of the measurement circuit is initialized according to the parameter set of one of the frequency settings, and as shown in step 330, the measurement circuit is detected by the measurement circuit according to a parameter set of the measurement circuit. The signal of the electrode is detected, and a dimensional sensing information is generated according to the signal from the detecting electrode. Then, as shown in step 340, determining whether the interference of the noise is super or not according to the sensing information of the UI dimension An allowable range. Then, as shown in step 350, when the interference of the noise exceeds the allowable range, the operating frequency and the measuring circuit are respectively changed according to the frequency and the parameter group of one of the frequency settings. After the setting, the UI dimension sensing information is generated, and according to the UI dimension sensing information, it is determined whether the interference of the noise exceeds the allowable range until the interference of the noise does not exceed the allowable range of the process. Alternatively, as shown in step 360 of FIG. 3B, when the interference of the noise exceeds the allowable range, the operating frequency and the setting of the measuring circuit are respectively changed according to the frequency and the parameter group set according to each frequency. And generating the UI dimension sensing information, and determining interference of the noise according to the UI dimension sensing information, and changing the operating frequency by a frequency set by a frequency that is lowest by the noise interference and a parameter group respectively And the setting of the measuring circuit.
例如圖4所示,為依據本發明的一種偵測電容式觸摸屏的偵測裝置,包括:一儲存電路43、一驅動電路41、一偵測電路42。如前述步驟310所示,儲存電路43包括多個頻率設定44,分別依耗電大小依序儲存。儲存電路43可以是以電路、記憶體或任何能儲存電磁記錄的儲存媒體。在本發明的一範例中,頻率設定44可以是以查表的方式構成,另外,頻率設定44還可以儲存耗電參數。 For example, as shown in FIG. 4, a detecting device for detecting a capacitive touch screen according to the present invention includes: a storage circuit 43, a driving circuit 41, and a detecting circuit 42. As shown in the foregoing step 310, the storage circuit 43 includes a plurality of frequency settings 44, which are sequentially stored according to the power consumption size. The storage circuit 43 can be a circuit, a memory or any storage medium capable of storing electromagnetic recordings. In an example of the present invention, the frequency setting 44 may be configured in a look-up manner. In addition, the frequency setting 44 may also store power consumption parameters.
驅動電路41可以是多個電路的集成,可以包括但不限於前述的時脈電路11、脈衝寬度調變電路12、驅動開關131、偵測開關132與驅動選擇電路141。在此例子中所列電路是方便本發明說明,驅動電路41可以只包括部份電路或加入更多電路,本發明並不加以限制。所述驅動電路41是用來依據一工作頻率提供一驅動信號給一電容式觸摸屏的至少一驅動電極151,其中電容式觸摸屏包括多條驅動電極151與多條偵測電極152,所述驅 動電極151與所述偵測電極152交疊於多個交疊處。 The driving circuit 41 may be an integration of a plurality of circuits, and may include, but is not limited to, the clock circuit 11, the pulse width modulation circuit 12, the driving switch 131, the detecting switch 132, and the driving selection circuit 141. The circuit listed in this example is convenient for the description of the present invention, and the driving circuit 41 may include only a part of the circuit or add more circuits, and the invention is not limited thereto. The driving circuit 41 is configured to provide a driving signal to at least one driving electrode 151 of a capacitive touch screen according to an operating frequency. The capacitive touch screen includes a plurality of driving electrodes 151 and a plurality of detecting electrodes 152. The movable electrode 151 and the detecting electrode 152 overlap at a plurality of overlaps.
偵測電路42可以是多個電路的集成,可以包括但不限於前述量測電路18、放大電路17、偵測選擇電路142,甚至可以是包括可變電阻16。在此例子中所列電路是方便本發明說明,偵測電路42可以只包括部份電路或加入更多電路,本發明並不加以限制。此外,偵測電路42更包括執行前述步驟320至步驟340,以及執行步驟350或步驟360。在圖3B的例子中,所述頻率設定可以是不依據耗電大小依序儲存。 The detection circuit 42 can be an integration of a plurality of circuits, and can include, but is not limited to, the aforementioned measurement circuit 18, the amplification circuit 17, the detection selection circuit 142, and even the variable resistor 16. The circuit listed in this example is convenient for the description of the present invention. The detecting circuit 42 may include only a part of the circuit or add more circuits, and the invention is not limited thereto. In addition, the detecting circuit 42 further includes performing the foregoing steps 320 to 340, and performing step 350 or step 360. In the example of FIG. 3B, the frequency setting may be stored in order not according to the power consumption.
如先前所述,用來判斷所述雜訊的干擾是否超出所述容許範圍的所述壹維度感測資訊是在所述驅動信號未提供給所述驅動電極151時產生。例如,是在驅動開關131為斷開並且偵測開關132為導通的時候。 As described earlier, the UI dimension sensing information for determining whether the interference of the noise exceeds the allowable range is generated when the driving signal is not supplied to the driving electrode 151. For example, when the drive switch 131 is turned off and the detection switch 132 is turned on.
在本發明的一範例中,至少一驅動電位有多種驅動模式,所述驅動模式包括單電極驅動模式與雙電極驅動模式,其中在單電極驅動模式中所述驅動信號同時間只提供所述驅動電極之一,並且在雙電極驅動模式中,所述驅動信號同時間只提供所述驅動電極之一對。其中所述單電極驅動模式的耗電大小小於所述雙電極驅動模式的耗電大小。此外,在所述單電極驅動式中,所述偵測電路是在每一條驅動電極被提供驅動信號時分別產生所述壹維度感測資訊,以構成一完整影像,並且其中在所述雙電極驅動式中,所述偵測電路是在每一對驅動電極被提供驅動信號時分別產生所述壹維度感測資訊,以構成一內縮影像,其中所述內縮影像的像素小於所述完整影像的像素。此外,雙電極驅動模式中偵測電路可以更包括分別對兩側電極進行驅動,並且在任一側的單一驅動電極被驅動時,偵測所有偵測電極的信號以分別產生所述壹維度感測資訊,其中分別對兩側電極進 行驅動所產生的兩個壹維度感測資訊被置於所述內縮影像的兩側外以組成一外擴影像,並且所述外擴影像的像素大於所述完整影像的像素。 In an example of the present invention, the at least one driving potential has a plurality of driving modes, and the driving mode includes a single-electrode driving mode and a two-electrode driving mode, wherein the driving signal simultaneously provides only the driving in the single-electrode driving mode One of the electrodes, and in the two-electrode drive mode, the drive signal provides only one pair of the drive electrodes at the same time. The power consumption of the single-electrode driving mode is smaller than the power consumption of the two-electrode driving mode. In addition, in the single-electrode driving type, the detecting circuit respectively generates the 壹-dimensional sensing information when each driving electrode is supplied with a driving signal to form a complete image, and wherein the two electrodes are In the driving mode, the detecting circuit generates the 壹 dimension sensing information when each pair of driving electrodes is provided with a driving signal to form a retracted image, wherein the pixels of the retracted image are smaller than the complete The pixels of the image. In addition, the detecting circuit in the two-electrode driving mode may further comprise driving the two electrodes separately, and when a single driving electrode on either side is driven, detecting signals of all detecting electrodes to respectively generate the 壹 dimensional sensing Information, which separately enters the electrodes on both sides The two pupil-sensing information generated by the row driving is placed outside the two sides of the indented image to form an expanded image, and the pixels of the expanded image are larger than the pixels of the complete image.
在本發明的另一範例中,所述驅動電位包括一第一驅動電位與一第二驅動電位,其中相應於所述第一驅動電位的所述單電極驅動模式產生所述完整影像的耗電大小>相應於所述第一驅動電位的所述雙電極驅動模式產生所述內縮影像的耗電大小>相應於所述第二驅動電位的所述單電極驅動模式產生所述完整影像的耗電大小。 In another example of the present invention, the driving potential includes a first driving potential and a second driving potential, wherein the single-electrode driving mode corresponding to the first driving potential generates power consumption of the complete image The size > the two-electrode driving mode corresponding to the first driving potential generates a power consumption amount of the retracted image > the single-electrode driving mode corresponding to the second driving potential generates a consumption of the complete image Electric size.
在本發明的另一範例中,所述驅動電位包括一第一驅動電位與一第二驅動電位,其中相應於所述第一驅動電位的所述單電極驅動模式產生所述完整影像的耗電大小>相應於所述第二驅動電位的所述單電極驅動模式產生所述完整影像的耗電大小。 In another example of the present invention, the driving potential includes a first driving potential and a second driving potential, wherein the single-electrode driving mode corresponding to the first driving potential generates power consumption of the complete image The size > the single electrode driving mode corresponding to the second driving potential produces a power consumption of the complete image.
此外,在本發明的一範例中,每一條偵測電極的信號是分別先經過一可變電阻再提供給所述偵測電路,所述偵測電路是依據所述頻率設定之一的參數組設定所述可變電阻的阻抗。另外,所述偵測電極的信號是先經過至少一放大電路放大信號後才被偵測,所述偵測電路是依據所述頻率設定之一的參數組設定所述放大電路的增益。再者,所述驅動信號是依據所述頻率設定之一的參數組產生。 In addition, in an example of the present invention, the signals of each detecting electrode are respectively supplied to the detecting circuit through a variable resistor, and the detecting circuit is a parameter group according to one of the frequency settings. The impedance of the variable resistor is set. In addition, the signal of the detecting electrode is detected after being amplified by at least one amplifier circuit, and the detecting circuit sets the gain of the amplifying circuit according to a parameter group of one of the frequency settings. Furthermore, the drive signal is generated based on a parameter set of one of the frequency settings.
本發明的一範例中,所述壹維度感測資訊的每一個值是分別以一設定的週期依據所述偵測電極的信號來產生,其中所述設定的週期是依據所述頻率設定之一的參數組來設定。在本發明的另一範例中,所述壹維度感測資訊的每一個值是分別以至少一設定的相位依據所述偵測電極的信號來產生,其中所述設定的相位是依據所述頻率設定之一的參數組來設 定。 In an example of the present invention, each value of the 壹 dimensional sensing information is generated according to a signal of the detecting electrode in a set period, wherein the set period is one according to the frequency setting. The parameter group is set. In another example of the present invention, each value of the UI dimension sensing information is generated according to a signal of the detecting electrode by at least one set phase, wherein the set phase is according to the frequency. Set one of the parameter groups to set set.
此外,前述的驅動電路41、偵測電路42與儲存電路43可以是由一控制電路45控制。控制電路45可以是可程式操控的處理器,也可以是其他控制電路,本發明並不限制。 In addition, the foregoing driving circuit 41, detecting circuit 42 and storage circuit 43 may be controlled by a control circuit 45. The control circuit 45 can be a programmable processor or other control circuit, and the invention is not limited thereto.
請參照圖5,為依據本發明的單電極驅動模式的示意圖。驅動信號S依序提供給第一條驅動電極、第二條驅動電極...,直到最後一條驅動電極,並且在每一條驅動電極被驅動信號S驅動時產生單電極驅動的壹維度感測資訊52。集合每一條驅動電極被驅動時產生的單電極驅動的壹維度感測資訊52,可構成一完整影像51,完整影像51的每一個值分別相應所述電極交會處之一的電容性耦合的變化。 Please refer to FIG. 5, which is a schematic diagram of a single electrode driving mode according to the present invention. The driving signal S is sequentially supplied to the first driving electrode, the second driving electrode, ... until the last driving electrode, and generates a single-electrode driving 壹 dimensional sensing information when each driving electrode is driven by the driving signal S 52. The single-electrode-driven 壹-dimensional sensing information 52 generated when each driving electrode is driven may constitute a complete image 51, and each value of the complete image 51 respectively corresponds to a change in capacitive coupling of one of the electrode intersections. .
此外,完整影像的每一個值分別相應於所述交疊處之一的位置。例如,每一條驅動電極的中央位置分別相應於一第一壹維度座標,並且每一條偵測電極的中央分別相應於一第二壹維度座標。第一壹維度座標可以是橫向(或水平、X軸)座標與縱向(或垂直、Y軸)座標之一,並且第二壹維度座標可以是橫向(或水平、X軸)座標與縱向(或垂直、Y軸)座標之另一。每一個交疊處分別相應於交疊於交疊處的驅動電極與偵測電極的一貳維度座標,貳維度座標是由第一壹維度座標與第二壹維度座標構成,如(第一壹維度座標,第二壹維度座標)或(第二壹維度座標,第一壹維度座標)。換言之,每一單電極驅動的壹維度感測資訊分別相應於所述驅動電極之一中央的第一壹維度座標,其中單電極驅動的壹維度感測資訊的每一個值(或完整影像的每一個值)分別相應於所述驅動電極之一中央的第一壹維度座標與所述偵測電極之一中央的第二壹維度座標構成的貳維度座標。同理,完整影 像的每一個值分別相應於所述交疊處之一的中央位置,即分別相應於所述驅動電極之一中央的第一壹維度座標與所述偵測電極之一中央的第二壹維度座標構成的貳維度座標。 Furthermore, each value of the complete image corresponds to the position of one of the overlaps, respectively. For example, the central positions of each of the driving electrodes respectively correspond to a first 壹 dimension coordinate, and the center of each of the detecting electrodes respectively corresponds to a second 壹 dimension coordinate. The first 壹 dimension coordinates may be one of a lateral (or horizontal, X-axis) coordinate and a longitudinal (or vertical, Y-axis) coordinate, and the second 壹 dimensional coordinate may be a lateral (or horizontal, X-axis) coordinate and longitudinal (or Vertical, Y-axis) Another of the coordinates. Each of the overlaps corresponds to a one-dimensional coordinate of the driving electrode and the detecting electrode overlapping at the overlapping, and the dimension of the dimension is composed of the first dimension and the second dimension, such as (first) Dimension coordinates, second dimension coordinates) or (second dimension coordinates, first dimension coordinates). In other words, each of the single-electrode-driven 壹-dimensional sensing information corresponds to a first 壹 dimension coordinate in the center of one of the driving electrodes, wherein each value of the single-electrode-driven 壹-dimensional sensing information (or each of the complete images) A value) respectively corresponds to a 贰 dimension coordinate formed by a first 壹 dimension coordinate at a center of one of the drive electrodes and a second 壹 dimension coordinate at a center of one of the detection electrodes. The same reason, complete shadow Each of the values of the image corresponds to a central position of one of the overlaps, that is, a second meandering dimension corresponding to a center of one of the driving electrodes and a second dimension of a center of the detecting electrode, respectively The 贰 dimension coordinates of the coordinates.
請參照圖6,為依據本發明的雙電極驅動模式的示意圖。驅動信號S依序提供給第一對驅動電極、第二對驅動電極...,直到最後一對驅動電極,並且在每一對驅動電極被驅動信號S驅動時產生雙電極驅動的壹維度感測資訊62。換言之,N條驅動電極可構成N-1對(多對)驅動電極。集合每一對驅動電極被驅動時產生的雙電極驅動的壹維度感測資訊62,可構成一內縮影像61。內縮影像61的值(或像素)的數量小於完整影像51的值(或像素)的數量。相對於完整影像,內縮影像的每一個雙電極驅動的壹維度感測資訊分別相應於一對驅動電極間中央位置的第一壹維度座標,並且每一個值分別相應於前述一對驅動電極間中央位置的第一壹維度座標與所述偵測電極之一中央的第二壹維度座標構成的貳維度座標。換言之,內縮影像的每一個值分別相應於一對交疊處間中央的位置,即分別相應於一對驅動電極(或所述多對驅動電極之一)間中央位置的第一壹維度座標與所述偵測電極之一中央的第二壹維度座標構成的貳維度座標。 Please refer to FIG. 6, which is a schematic diagram of a two-electrode driving mode according to the present invention. The driving signal S is sequentially supplied to the first pair of driving electrodes, the second pair of driving electrodes, ... until the last pair of driving electrodes, and when each pair of driving electrodes is driven by the driving signal S, a two-electrode driving 壹 dimensional sense is generated Information 62. In other words, the N drive electrodes can constitute N-1 pairs (multiple pairs) of drive electrodes. The two-electrode-driven 壹-dimensional sensing information 62 generated when each pair of driving electrodes is driven may constitute a retracted image 61. The number of values (or pixels) of the retracted image 61 is less than the number of values (or pixels) of the full image 51. Relative to the complete image, each of the two-electrode-driven 壹-dimensional sensing information of the retracted image corresponds to a first 壹 dimension coordinate at a central position between the pair of driving electrodes, and each value corresponds to the pair of driving electrodes respectively A first dimension coordinate of the central location and a second dimension coordinate formed by a second dimension coordinate at the center of one of the detecting electrodes. In other words, each value of the indented image corresponds to a position between the centers of the pair of overlaps, that is, a first dimension coordinate corresponding to a central position between the pair of driving electrodes (or one of the plurality of pairs of driving electrodes), respectively. An 贰 dimension coordinate formed by a second 壹 dimension coordinate in the center of one of the detecting electrodes.
請參照圖7A,為依本發明的雙電極驅動模式中進行第一側單電極驅動的示意圖。驅動信號S被提供給最接近電容式觸摸屏第一側的驅動電極,並且在最接近電容式觸摸屏第一側的驅動電極151被驅動信號S驅動時產生單電極驅動的第一側壹維度感測資訊721。再請參照圖7B,為依本發明的雙電極驅動模式中進行第二側單電極驅動的示意圖。驅動信號S被提供給最接近電容式觸摸屏第二側的驅動電極151,並且在最接近電容式觸摸 屏第二側的驅動電極151被驅動信號S驅動時產生單電極驅動的第二側壹維度感測資訊722。第一側與第二側的驅動電極被驅動時產生的單電極驅動的壹維度感測資訊721與722分別被置於內縮影像61的第一側與第二側外以構成一外擴影像71。外擴影像71的值(或像素)的數量大於完整影像51的值(或像素)的數量。在本發明的一範例中,是先產生單電極驅動的第一側壹維度感測資訊721,再產生內縮影像61,再產生單電極驅動的第二側壹維度感測資訊722,以構成一外擴影像71。在本發明的另一範例中,是先產生內縮影像61,再分別產生單電極驅動的第一側與第二側壹維度感測資訊721與722,以構成一外擴影像71。 Please refer to FIG. 7A, which is a schematic diagram of performing first-side single-electrode driving in the two-electrode driving mode according to the present invention. The driving signal S is supplied to the driving electrode closest to the first side of the capacitive touch screen, and generates a single-sided driving first side 壹 dimensional sensing when the driving electrode 151 closest to the first side of the capacitive touch screen is driven by the driving signal S Information 721. Referring again to FIG. 7B, a schematic diagram of the second side single electrode driving in the two-electrode driving mode according to the present invention is shown. The drive signal S is supplied to the drive electrode 151 closest to the second side of the capacitive touch screen, and is closest to the capacitive touch The second side scan sense information 722 of the single electrode drive is generated when the drive electrode 151 on the second side of the screen is driven by the drive signal S. The single-electrode-driven 壹-dimensional sensing information 721 and 722 generated when the driving electrodes of the first side and the second side are driven are respectively placed outside the first side and the second side of the retracted image 61 to form an expanded image. 71. The number of values (or pixels) of the expanded image 71 is greater than the number of values (or pixels) of the full image 51. In an example of the present invention, the first side-side dimension sensing information 721 of the single-electrode driving is generated first, and then the indented image 61 is generated, and then the second-side-side dimension sensing information 722 of the single-electrode driving is generated to form An external expansion image 71. In another example of the present invention, the retracted image 61 is first generated, and the first side and second side slanting sensing information 721 and 722 of the single electrode driving are respectively generated to form an expanded image 71.
換言之,外擴影像是依序由單電極驅動的第一側壹維度感測資訊、內縮影像與單電極驅動的第二側壹維度感測資訊構成。由於內縮影像61的值是雙電極驅動,因此平均大小會大於單電極驅動的第一側與第二側壹維度影像的值的平均大小。在本發明的一範例中,第一側與第二側壹維度感測資訊721與722的值是經過一比例放大後才分別置於內縮影像61的第一側與第二側外。所述比例可以是一預設倍數,此預設倍數大於1,也可以是依據雙電極驅動的壹維度感測資訊的值與單電極驅動的壹維度感測資訊的值間的比例產生。例如是第一側的壹維度感測資訊721的所有值總和(或平均)與內縮影像中鄰第一側的壹維度感測資訊62所有值總和(或平均)的比例,第一側壹維度感測資訊721的值是經過此比例放大後才置於內縮影像61的第一側外。同理,是第二側的壹維度感測資訊722的所有值總和(或平均)與內縮影像中鄰第二側的壹維度感測資訊62所有值總和(或平均)的比值,第二側壹維度感測資訊722的值是經過此比例放大後才置於內縮影像61的第二 側外。又例如,前述的比例可以是內縮影像61的所有值總和(或平均)與第一側與第二側的壹維度感測資訊721和722的所有值總和(或平均)的比值。 In other words, the expanded image is composed of the first side 壹 dimension sensing information driven by the single electrode, the retracted image and the second side 壹 dimension sensing information driven by the single electrode. Since the value of the retracted image 61 is a two-electrode drive, the average size will be greater than the average size of the values of the first side and second side 壹 dimension images of the single electrode drive. In an example of the present invention, the values of the first side and second side dimension sensing information 721 and 722 are scaled up and then placed outside the first side and the second side of the indented image 61, respectively. The ratio may be a preset multiple, and the preset multiple is greater than 1, or may be generated according to a ratio between a value of the two-electrode-driven 壹-dimensional sensing information and a value of the single-electrode-driven 壹-dimensional sensing information. For example, the sum (or average) of all values of the first dimension sensing information 721 of the first side and the sum (or average) of all values of the first dimension sensing information 62 of the adjacent first side of the indented image, the first side The value of the dimensional sensing information 721 is enlarged by this scaling before being placed outside the first side of the retracted image 61. Similarly, the sum (or average) of all values of the second dimension sensing information 722 of the second side and the sum (or average) of all values of the second dimension sensing information 62 of the adjacent second side of the indented image, second The value of the side dimension sensing information 722 is the second of the indented image 61 after being scaled up. Side outside. For another example, the aforementioned ratio may be a ratio of the sum (or average) of all values of the indented image 61 to the sum (or average) of all values of the first and second sides of the pupil dimensional sensing information 721 and 722.
在單電極驅動模式中,完整影像的每一個值(或像素)相應於一相疊處的貳維度位置(或座標),是由相疊於相疊處的驅動電極相應的第一壹維度位置(或座標)與偵測電極相應的第二壹維度位置(或座標)所構成,如(第一壹維度位置,第二壹維度位置)或(第二壹維度位置,第一壹維度位置)。單一外部導電物件可能與一個或多個交疊處電容性耦合,與外部導電物件電容性耦合的交疊處會產生電容性耦合的變化,反應在完整影像中相應的值上,即反應在外部導電物件相應於完整影像中相應的值上。因此依據外部導電物件相應於完整影像中相應的值與貳維度座標,可計算出外部導電物件的質心位置(貳維度座標)。 In the single-electrode driving mode, each value (or pixel) of the complete image corresponds to a 贰 dimension position (or coordinate) at a stack, which is a first 壹 dimension position corresponding to the driving electrodes stacked at the overlap (or coordinates) consisting of a second dimension position (or coordinate) corresponding to the detection electrode, such as (first dimension position, second dimension position) or (second dimension position, first dimension position) . A single external conductive object may be capacitively coupled to one or more overlaps, and a capacitive coupling change at the intersection with the external conductive object may cause a change in capacitive coupling, corresponding to a corresponding value in the complete image, ie, the reaction is external The conductive object corresponds to the corresponding value in the complete image. Therefore, the centroid position (贰 dimension) of the external conductive object can be calculated according to the corresponding value of the external conductive object corresponding to the 贰 dimension coordinate in the complete image.
依據本發明的一範例,在單電極驅動模式中,每一個電極(驅動電極與偵測電極)相應的壹維度位置為電極中央的位置。依據本發明的另一範例,在雙電極驅動模式中,每一對電極(驅動電極與偵測電極)相應的壹維度位置為兩電極間中央的位置。 According to an example of the present invention, in the single-electrode driving mode, the corresponding pupil position of each of the electrodes (the driving electrode and the detecting electrode) is the position of the center of the electrode. According to another example of the present invention, in the two-electrode driving mode, the position of the 壹 dimension of each pair of electrodes (the driving electrode and the detecting electrode) is the position between the two electrodes.
在內縮影像中,第一個壹維度感測資訊相應於第一對驅動電極的中央位置,即第一條與第二條驅動電極(第一對驅動電極)間中央的第一壹維度位置。如果是單純地計算質心位置,則只能計算出第一對驅動電極中央與最後一對驅動電極中央間的位置,依據內縮影像計算出的位置的範圍缺少第一對驅動電極中央位置(中央的第一壹維度位置)與第一條驅動電極中央位置間的範圍及最後一對驅動電極中央位置與最後一條驅動電極中央位置間的範圍。 In the retracted image, the first 壹 dimension sensing information corresponds to a central position of the first pair of driving electrodes, that is, a first 壹 dimension position between the first and second driving electrodes (the first pair of driving electrodes) . If the centroid position is simply calculated, only the position between the center of the first pair of driving electrodes and the center of the last pair of driving electrodes can be calculated, and the range of the position calculated from the indented image lacks the center position of the first pair of driving electrodes ( The range between the central first dimension position) and the central position of the first drive electrode and the range between the last pair of drive electrode center positions and the last drive electrode center position.
相對於內縮影像,外擴影像中,第一側與第二側壹維度感測資訊分別相應於第一條與最後一條驅動電極中央的位置,因此依據外擴影像計算出的位置的範圍比依據內縮影像計算出的位置的範圍增加了第一對驅動電極中央位置(中央的第一壹維度位置)與第一條驅動電極中央位置間的範圍及最後一對驅動電極中央位置與最後一條驅動電極中央位置間的範圍。換言之,依據外擴影像計算出的位置的範圍包括了依據完整影像計算出的位置的範圍。 The first side and the second side 感 dimension sensing information correspond to the positions of the first and last driving electrodes respectively in the expanded image, so that the range ratio of the position calculated according to the expanded image is The range of positions calculated from the retracted image increases the range between the center position of the first pair of driving electrodes (the first 壹 dimension position in the center) and the central position of the first driving electrode, and the center position and the last position of the last pair of driving electrodes The range between the central positions of the drive electrodes. In other words, the range of positions calculated from the expanded image includes the range of positions calculated from the complete image.
同理,前述的雙電極驅動模式更可以擴大成為多電極驅動模式,也就是同時驅動多條驅動電極。換言之,驅動信號是同時提供給一組驅動電極中的多條(所有)驅動電極,例如一組驅動電極的驅動電極數量有二條、三條或四條。所述的多電極驅動模式包括前述的雙電極驅動模式,不包括前述的單電極驅動模式。 Similarly, the aforementioned two-electrode driving mode can be expanded to a multi-electrode driving mode, that is, a plurality of driving electrodes are simultaneously driven. In other words, the drive signal is provided to a plurality of (all) drive electrodes of a group of drive electrodes simultaneously, for example, a set of drive electrodes has two, three or four drive electrodes. The multi-electrode driving mode includes the aforementioned two-electrode driving mode, and does not include the aforementioned single-electrode driving mode.
請參照圖8,為依據本發明的一種偵測電容式觸摸屏的偵測方法。如步驟810所示,提供具有依序平行排列的多條驅動電極與多條偵測電極的一電容式觸摸屏,其中所述驅動電極與所述偵測電極交疊於多個交疊處。例如前述的驅動電極151與偵測電極152。接下來,如步驟820所示,分別在單電極驅動模式與多電極驅動模式提供一驅動信號給所述驅動電極之一與所述驅動電極之一組驅動電極。也就是,在一單極驅動模式時該驅動信號是每次只提供給所述驅動電極之一,並且在一多電極驅動模式時該驅動信號是每次同時被提供所述驅動電極的一組驅動電極,其中除了最後N條驅動電極外,每一驅動電極與在後相鄰的兩驅動電極組成同時被驅動的一組驅動電極,並且N為一組驅動電極的驅動電極數量減一。驅動信號的提 供可以是由前述的驅動電路41來提供。再接下來,如步驟830所示,在每次該驅動信號被提供時,由所述偵測電極取得壹維度感測資訊,以在多電極驅動模式取得多個多電極驅動的壹維度感測資訊及在單電極驅動模式取得第一側與第二側單電極驅動的壹維度感測資訊。例如,在多電極驅動模式時,在每一組驅動電極被提供驅動信號時分別取得一多電極驅動的壹維度感測資訊。又例如,在單電極驅動模式時,在第一條驅動電極與最後一條驅動電極提供驅動信號時分別取得一第一側單電極驅動的壹維度感測資訊與一第二側單電極驅動的壹維度感測資訊。壹維度感測資訊的取得可以是由上述偵測電路42來取得。所述的壹維度感測資訊包括所述多電極驅動的壹維度感測資訊(內縮影像)及第一側與第二側單電極驅動的壹維度感測資訊。再接下來,如步驟840所示,依序依據第一側單電極驅動的壹維度感測資訊、所有的多電極驅動的壹維度感測資訊與第二側單電極驅動的壹維度感測資訊產生一影像(外擴影像)。步驟840可以是由前述控制電路來完成。 Please refer to FIG. 8 , which illustrates a method for detecting a capacitive touch screen according to the present invention. As shown in step 810, a capacitive touch screen having a plurality of driving electrodes and a plurality of detecting electrodes arranged in parallel is provided, wherein the driving electrodes and the detecting electrodes overlap at a plurality of overlaps. For example, the driving electrode 151 and the detecting electrode 152 described above. Next, as shown in step 820, a driving signal is supplied to one of the driving electrodes and one of the driving electrodes to drive the electrodes in the single electrode driving mode and the multi-electrode driving mode, respectively. That is, the driving signal is supplied to only one of the driving electrodes at a time in a unipolar driving mode, and the driving signal is a group which is simultaneously supplied with the driving electrodes at a time in a multi-electrode driving mode. The driving electrodes, wherein each of the driving electrodes and the two adjacent driving electrodes constitute a group of driving electrodes that are simultaneously driven, except for the last N driving electrodes, and the number of driving electrodes of N being a group of driving electrodes is reduced by one. Drive signal The supply may be provided by the aforementioned drive circuit 41. Then, as shown in step 830, each time the driving signal is provided, the sensing information is acquired by the detecting electrode to obtain a plurality of multi-electrode driving 壹 dimensional sensing in the multi-electrode driving mode. Information and 壹 dimensional sensing information of the first side and the second side single electrode driving in the single electrode driving mode. For example, in the multi-electrode driving mode, a multi-electrode driven 壹 dimensional sensing information is respectively obtained when each set of driving electrodes is supplied with a driving signal. For example, in the single-electrode driving mode, a first-side single-electrode-driven 壹-dimensional sensing information and a second-side single-electrode-driven 壹 are respectively obtained when the first driving electrode and the last driving electrode provide a driving signal. Dimensional sensing information. The acquisition of the dimensional sensing information may be obtained by the detection circuit 42 described above. The 壹 dimensional sensing information includes the multi-electrode driven 壹 dimensional sensing information (inward reduced image) and the first side and the second side single electrode driven 壹 dimensional sensing information. Then, as shown in step 840, the first-dimensional single-electrode-driven 壹-dimensional sensing information, all multi-electrode-driven 壹-dimensional sensing information, and the second-side single-electrode-driven 壹-dimensional sensing information are sequentially displayed. Generate an image (extended image). Step 840 can be accomplished by the aforementioned control circuitry.
如先前所述,單電極驅動模式中驅動信號的電位與在多電極驅動模式中驅動信號的電位不一定要相同,可以是相同,也可以是不同。例如單電極驅動是以較大的第一交流電位來驅動,相對於多電極驅動的第二交流電位,第一交流電位與第二交流電位的比值為一預設比例。另外,步驟840是依據第一側與第二側單電極驅動的壹維度感測資訊的所有值是分別被乘上相同或不同的一預設比率來產生該影像。此外,在單電極驅動模式中驅動信號的頻率與在多電極驅動模式中驅動信號的頻率不同。 As described earlier, the potential of the driving signal in the single-electrode driving mode is not necessarily the same as the potential of the driving signal in the multi-electrode driving mode, and may be the same or different. For example, the single electrode driving is driven by a large first alternating current potential, and the ratio of the first alternating current potential to the second alternating current potential is a predetermined ratio with respect to the second alternating current potential driven by the multi-electrode. In addition, step 840 is to generate the image according to all the values of the first dimension and the second side single-electrode driving sensed information being multiplied by the same or different preset ratios. Further, the frequency of the drive signal in the single-electrode drive mode is different from the frequency of the drive signal in the multi-electrode drive mode.
一組驅動電極的驅動電極數量可以有二條、三條,甚至更多,本發明並不加以限制。在本發明的較佳模式中,一組驅動電極的驅動 電極數量為二條。在一組驅動電極的驅動電極數量為二條時,每一驅動電極分別相應於一第壹維度座標,其中每一多(雙)電極驅動的壹維度感測資訊分別相應於所述驅動電極的一對驅動電極間中央的第一壹維度座標,並且第一側與第二側單電極驅動的壹維度感測資訊分別相應於第一條與最後一條驅動電極的第一壹維度座標。 The number of driving electrodes of a group of driving electrodes may be two, three, or even more, and the present invention is not limited thereto. In a preferred mode of the invention, a set of drive electrodes are driven The number of electrodes is two. When the number of driving electrodes of one set of driving electrodes is two, each of the driving electrodes respectively corresponds to a second dimension coordinate, wherein each of the plurality of (dual) electrodes drives the 壹 dimension sensing information corresponding to one of the driving electrodes The first 壹 dimension coordinates of the center between the driving electrodes, and the first side and the second side single electrode driving 壹 dimension sensing information respectively correspond to the first 壹 dimension coordinates of the first strip and the last driving electrode.
同理,在一組驅動電極的驅動電極數量為多條(兩條以上)時,每一驅動電極分別相應於一第壹維度座標,其中每一多電極驅動的壹維度感測資訊分別相應於所述驅動電極的一組驅動電極中相距最遠的兩條驅動電極間中央的第一壹維度座標,並且第一側與第二側單電極驅動的壹維度感測資訊分別相應於第一條與最後一條驅動電極的第一壹維度座標。 Similarly, when the number of driving electrodes of a group of driving electrodes is multiple (two or more), each driving electrode respectively corresponds to a second dimensional coordinate, wherein each multi-electrode driven 壹 dimensional sensing information respectively corresponds to a first 壹 dimension coordinate centered between the two driving electrodes of the driving electrode, and the first side and the second side single electrode driving 壹 dimension sensing information respectively correspond to the first The first 壹 dimension coordinate with the last drive electrode.
此外,每一偵測電極分別相應於一第二壹維度座標,並且每一壹維度感測資訊的每一個值分別相應於所述偵測電極之一的第二壹維度座標。 In addition, each of the detecting electrodes respectively corresponds to a second 壹 dimension coordinate, and each value of each 壹 dimension sensing information respectively corresponds to a second 壹 dimension coordinate of one of the detecting electrodes.
請參照圖9A與圖9B,為偵測導電條經由驅動導電條接收到電容性耦合信號的示意圖。由於信號經過一些負載電路,如經過電容性耦合,偵測導電條收到的信號與提供給驅動導電條前的信號會產生相位差。例如,驅動信號提供給第一條驅動導電條時,第一條偵測導電條收的信號與提供給驅動導電條前的信號會產生第一相位差ψ 1,如圖9A所示,並且驅動信號提供給第二條驅動導電條時,第一條偵測導電條收的信號與提供給驅動導電條前的信號會產生第二相位差ψ 2,如圖9B所示。在本發明一實施例中,相位差可以表示信號通過負載電路的時間,也可以表示偵測導電條經由驅動導電條收到電容性耦合信號與驅動導電條發送信號之間的時間 差。由於每一驅動導電條的位置不同,因此同一偵測導電條對於不同驅動導電條的相位差也就不同。 Please refer to FIG. 9A and FIG. 9B , which are schematic diagrams for detecting that a conductive strip receives a capacitive coupling signal via a driving strip. Since the signal passes through some load circuit, such as capacitive coupling, the phase difference between the signal received by the detecting strip and the signal supplied to the driving strip is generated. For example, when the driving signal is supplied to the first driving conductive strip, the first signal detected by the conductive strip and the signal supplied to the driving strip will generate a first phase difference ψ 1, as shown in FIG. 9A, and driven. When the signal is supplied to the second driving strip, the first signal detected by the strip and the signal supplied to the strip before the driving strip will produce a second phase difference ψ 2, as shown in FIG. 9B. In an embodiment of the invention, the phase difference may indicate the time when the signal passes through the load circuit, and may also indicate the time between when the detecting conductive strip receives the capacitive coupling signal via the driving conductive strip and when the driving conductive strip transmits the signal. difference. Since the position of each driving strip is different, the phase difference of the same detecting strip for different driving strips is different.
第一相位差ψ 1與第二相位差ψ 2會隨著驅動信號通過的電阻電容電路(RC circuit)不同而有所差異。當驅動信號的週期都相同時,不同的相位差表示信號延遲不同的時間被收到,如果忽視前述的相位差直接偵測信號,會造成信號量測的開始相位不同而產生不同結果。例如,假設相位差為0時,而信號為弦波,並且振幅為A。當在相位為30度、90度、150度、210度、270度與330度偵測信號時,會分別得到|1/2A|、|A|、|1/2A|、|-1/2A|、|-A|與|-1/2A|的信號。但是當相位差為150度時,開始量測的相位造成偏差,以致變成在相位為180度、240度、300度、360度、420度與480度偵測信號時,會分別得到0、、、0、與的信號。 The first phase difference ψ 1 and the second phase difference ψ 2 may differ depending on the RC circuit through which the drive signal passes. When the periods of the driving signals are the same, different phase differences indicate that the signal delays are received at different times. If the phase difference is directly ignored, the starting phase of the signal measurement is different and different results are generated. For example, suppose the phase difference is 0, and the signal is a sine wave, and the amplitude is A. When detecting signals at phases of 30 degrees, 90 degrees, 150 degrees, 210 degrees, 270 degrees, and 330 degrees, |1/2A|, |A|, |1/2A|, |-1/2A are obtained, respectively. |, |-A| and |-1/2A| signals. However, when the phase difference is 150 degrees, the phase of the measurement is deviated, so that when the phase is 180 degrees, 240 degrees, 300 degrees, 360 degrees, 420 degrees, and 480 degrees, the signals are respectively 0. , , 0, versus signal of.
由前述例子中,可以看出因前述相位差造成的量測的啟始相位的延誤,會使得信號量測的結果完全不同,無論驅動信號是弦波或方波(如PWM),都會有類似的差異存在。 From the foregoing example, it can be seen that the delay of the initial phase of the measurement due to the aforementioned phase difference causes the result of the signal measurement to be completely different, regardless of whether the driving signal is a sine wave or a square wave (such as PWM). The difference exists.
此外,每次驅動信號被提供時,可以是提供給相鄰的多條驅動導電條,其中驅動導電條是依序平行排列。在被發明的較佳範例中是提供給相鄰的兩條驅動導電條,因此在一次掃描中,n條驅動導電條共被提供n-1次驅動信號,每次提供給一組驅動導電條,例如,第一次提供給第一條與第二條驅動導電條,第二次提供給第二條與第三條驅動導電條,依此類推。如先前所述,每次驅動信號被提供時,被提供的一組驅動導電條可以是一條、兩條或更多條,本發明並不限制每次驅動信號提供的驅動導電條 的數量。每次驅動信號被提供時,所有偵測導電條量測的信號可集合成一壹維度感測資訊,集合一次掃描中的所有壹維度感測資訊可構成一貳維度感測資訊,可視為一影像。 In addition, each time a driving signal is supplied, it may be provided to an adjacent plurality of driving conductive strips, wherein the driving conductive strips are sequentially arranged in parallel. In the preferred embodiment of the invention, the two adjacent driving strips are provided, so that in one scan, the n driving strips are supplied with n-1 driving signals, each time providing a set of driving strips. For example, the first and second drive conductive strips are provided for the first time, the second and third drive conductive strips are provided for the second time, and so on. As previously described, each time a drive signal is provided, the set of drive strips provided may be one, two or more strips, and the present invention does not limit the drive strips provided by each drive signal. quantity. Each time the driving signal is provided, all the signals for detecting the measured strips can be combined into one dimensional sensing information, and all the dimensional sensing information in one scan can form a dimensional sensing information, which can be regarded as an image. .
據此,在本發明最佳模式的一第一實施例中,是針對不同導電條採用不同的相位差來延遲偵測信號。例如,先決定多個相位差,分別在每一組驅動導電條被提供驅動信號時,依據每一個相位差來量測訊號,量測到的訊號中最大者所依據的相位差是最趨近提供給驅動導電條前的信號與偵測導電條收到後的信號間的相位差,在以下說明中稱為最趨近相位差。訊號的量測可以是挑選所述偵測導電條之一來依據每一個相位差進行量測,或挑選多條或全部偵測導電條來依據每一個相位差進行量測,依據多條或全部偵測導電條的訊號總和來判斷出最趨近相位差。依據上述,可以判斷出每一組導電條的最趨近相位差,換言之,在每一組導電條被提供驅動信號時,所有偵測導電條延遲被提供驅動信號的最趨近相位差後才進行量測。 Accordingly, in a first embodiment of the preferred mode of the present invention, different phase differences are used for different conductive strips to delay the detection signal. For example, a plurality of phase differences are first determined, and when each group of driving strips is supplied with a driving signal, the signals are measured according to each phase difference, and the phase difference according to the largest one of the measured signals is closest. The phase difference between the signal supplied to the front of the driving strip and the signal after the detecting strip is received is referred to as the closest phase difference in the following description. The measurement of the signal may be: selecting one of the detecting conductive strips to measure according to each phase difference, or selecting a plurality of or all detecting conductive strips to measure according to each phase difference, according to multiple or all The sum of the signals of the conductive strips is detected to determine the closest phase difference. According to the above, the closest phase difference of each set of conductive strips can be judged. In other words, when each set of conductive strips is supplied with a driving signal, all the detected conductive strips are delayed by the closest phase difference of the supplied driving signals. Make measurements.
此外,也可以是不需要依據所有相位差來量測訊號,可以是在所述(多個)相位差中依序依據一個相位差來量測訊號,直到發現量測到的訊號遞增後遞減時停止,其中量測到的訊號中最大者所依據的相位差是最趨近相位差。如此,可以得到訊號較大的影像。 In addition, the signal may not need to be measured according to all phase differences, and the signal may be measured according to a phase difference in the phase difference(s) until the measured signal is incremented and then decremented. Stop, where the phase difference based on the largest of the measured signals is the closest phase difference. In this way, an image with a larger signal can be obtained.
另外,也可以是先挑選所述驅動導電條的一組作為基準導電條,其他導電條稱為非基準導電條,先偵測基準導電條的最趨近相位差,作為一平準(level)相位差,再偵測非基準驅動導電條最趨***準相位差的相位差,稱為最平準相位差。例如,以依據基準導電條的平準相位差量測的 信號作為一平準信號,分別對每一組非基準驅動導電條的每一個相位差進行信號的量測,以量測到的信號中最接進平準信號者所依據的相位差作為被提供驅動信號的驅動導電條的平準相位差。如此,可判斷出每一組驅動導電條的平準相位差,依據每一組驅動導電條的平準相位差來延遲後信號的量測,可得到較平準的影像,即影像中的信號間的差異很小。另外,平準信號可以是落於一預設工作範圍,不一定需要是最佳或最大信號。 In addition, a set of the driving conductive strips may be first selected as a reference conductive strip, and the other conductive strips are referred to as non-reference conductive strips, and the closest phase difference of the reference conductive strips is first detected as a level phase. Poor, and then detect the phase difference of the non-reference drive strip closest to the leveling phase difference, called the most leveling phase difference. For example, measured by the level difference of the reference conductive strips As a leveling signal, the signal is respectively measured for each phase difference of each set of non-reference driving strips, and the phase difference according to the most connected leveling signal is measured as the supplied driving signal. The leveling phase difference of the driving conductive strips. In this way, the leveling phase difference of each group of driving strips can be determined, and the measurement of the post-delay signal can be performed according to the leveling phase difference of each group of driving strips, so that a relatively flat image, that is, a difference between signals in the image can be obtained. Very small. In addition, the leveling signal may fall within a predetermined working range and does not necessarily need to be the best or maximum signal.
前述說明中,在每次驅動信號被提供時,是以所有偵測導電條採用相同相位差,本技術領域具有通常知識的技術人員可以推知,也可以是在每次驅動信號被提供時,每一組偵測導電條採用分別採用各自的最趨近相位差或平準相位差。換言之,是在每次驅動信號被提供時,分別對每一組偵測導電條的每個相位差進行信號的量測,以判斷出最趨近相位差或平準相位差。 In the foregoing description, each time the drive signal is supplied, the same phase difference is used for all of the detected conductive strips, and those skilled in the art can infer that, each time a drive signal is supplied, each time A set of detecting conductive strips adopts respective closest phase difference or leveling phase difference. In other words, each time the driving signal is supplied, the signal is measured for each phase difference of each group of detecting strips to determine the closest phase difference or level difference.
事實上,除了利用相位差來延遲量測以取得較大或較平準的影像外,也可以是以不同的放大倍率、阻抗、量測時間來取得較平準的影像。 In fact, in addition to using the phase difference to delay the measurement to obtain a larger or relatively flat image, it is also possible to obtain a relatively flat image with different magnification, impedance, and measurement time.
據此,本發明提出觸摸屏的信號量測方法,如圖10所示。如步驟1010所示,提供一觸摸屏,觸摸屏包括平行排列的多條驅動導電條與平行排列的多條偵測導電條組成的多條導電條,所述的驅動導電條與所述的偵測導電條交疊於多個交疊區。此外,如步驟1020所示,決定每一條或每一組驅動導電條的一延遲相位差。之後,如步驟1030所示,依序提供一驅動信號至所述的驅動導電條中的一條或一組,被提供驅動信號的驅動導電條與所述的偵測導電條產生互電容性耦合。接下來,如步驟1040所示,在每次驅 動信號被提供時,被提供驅動信號的每一偵測組合的信號是延遲對應的相位差後才被量測。 Accordingly, the present invention proposes a signal measurement method for a touch screen, as shown in FIG. As shown in step 1010, a touch screen is provided. The touch screen includes a plurality of conductive strips arranged in parallel and a plurality of strips of parallel detecting strips, the driving strips and the detecting conductive The strips overlap in multiple overlapping zones. Additionally, as shown in step 1020, a delay phase difference for each or each set of drive strips is determined. Then, as shown in step 1030, a driving signal is sequentially supplied to one or a group of the driving conductive strips, and the driving conductive strips provided with the driving signals and the detecting conductive strips are mutually capacitively coupled. Next, as shown in step 1040, each drive When the motion signal is supplied, the signal of each detection combination provided with the drive signal is measured after delaying the corresponding phase difference.
據此,在本發明觸摸屏的信號量測裝置中,前述的步驟1030可以是由前述的驅動電路41來實施。此外,步驟1040可以是由前述的偵測電路42來實施。 Accordingly, in the signal measuring device of the touch panel of the present invention, the aforementioned step 1030 may be implemented by the aforementioned driving circuit 41. Additionally, step 1040 can be implemented by the aforementioned detection circuit 42.
在本發明的一範例中,每一條或每一組驅動導電條的延遲相位差是由多個預定相位差中挑選,如挑選前述的最趨近相位差。每一組導電條指的是在多條驅動時同時被提供驅動信號的一組多條導電條,例如由前述的驅動電路41的驅動選擇電路141來實施。例如,依序挑選所述的驅動導電條的一條或一組導電條作為被挑選導電條,如由驅動電路41來實施。接下來,由多個預定相位差中挑選出被挑選導電條的延遲相位差。其中,在驅動信號被提供給被挑選導電條時,延遲所述的延遲相位差後量測的信號大於延遲其他預定相位差後偵測到的信號。例如,是由前述的偵測電路42來實施,偵測出來的延遲相位差可儲存於儲存電路43。 In an example of the invention, the retardation phase difference of each or each set of drive strips is selected from a plurality of predetermined phase differences, such as picking the aforementioned nearest phase difference. Each set of conductive strips refers to a plurality of conductive strips that are simultaneously supplied with drive signals during a plurality of driving operations, for example, by the drive selection circuit 141 of the aforementioned drive circuit 41. For example, one or a set of conductive strips of the drive strips are sequentially selected as selected strips, as implemented by drive circuitry 41. Next, the delayed phase difference of the selected conductive strips is selected from a plurality of predetermined phase differences. Wherein, when the driving signal is supplied to the selected conductive strip, the signal measured after delaying the delayed phase difference is greater than the signal detected after delaying other predetermined phase differences. For example, it is implemented by the detection circuit 42 described above, and the detected delay phase difference can be stored in the storage circuit 43.
此外,也可是挑選前述的平準相位差。例如,挑選所述的驅動導電條的一條或一組導電條作為基準導電條,其他條或其他組導電條作為非基準導電條,如由驅動電路41來實施。之後,由多個預定相位差中挑選出基準導電條的延遲相位差,其中在驅動信號被提供給基準導電條時,延遲所述的延遲相位差後偵測的信號大於延遲其他預定相位差後偵測到的信號。其中,基準導電條的延遲相位差為前述的平準相位差。接下來,以基準導電條延遲所述的延遲相位差後偵測的信號作為基準信號,再依序挑選所述的非基準導電條的一條或一組非基準導電條作為被挑選導電條,並 且由多個預定相位差中挑選出被挑選導電條的延遲相位差,如前述的最平準相位差,其中在驅動信號被提供給被挑選導電條時,延遲所述的延遲相位差後偵測的信號相較於延遲其他預定相位差後偵測到的信號最接近於基準信號。以上,可以是由偵測電路42來實施。 In addition, the aforementioned leveling phase difference may also be selected. For example, one or a set of conductive strips of the drive strips are selected as reference strips, and other strips or other sets of strips are used as non-reference strips, as implemented by drive circuitry 41. Thereafter, a delay phase difference of the reference conductive strip is selected from a plurality of predetermined phase differences, wherein when the driving signal is supplied to the reference conductive strip, the signal detected after delaying the delayed phase difference is greater than delaying other predetermined phase differences The detected signal. The delay phase difference of the reference conductive strip is the aforementioned leveling phase difference. Next, the signal detected by delaying the delayed phase difference is used as a reference signal, and then one or a group of non-reference conductive strips of the non-reference conductive strip are sequentially selected as selected conductive strips, and And selecting, by the plurality of predetermined phase differences, a delay phase difference of the selected conductive strip, such as the most leveling phase difference, wherein the delay signal is delayed after the driving signal is supplied to the selected conductive strip The signal detected is closest to the reference signal than the signal detected after delaying other predetermined phase differences. The above may be implemented by the detection circuit 42.
在本發明的一範例中,驅動信號被提供給基準導電條或被祧選的導電條時,由所述的偵測導電條中的多條量測的信號是由所述的偵測導電條之一量測的信號。換言之,是依據相同一條偵測導電條的信號來挑選出延遲相位差。在本發明的另一範例中,驅動信號被提供給基準導電條或被祧選的導電條時,由所述的偵測導電條中的多條量測的信號是由所述的偵測導電條的至少兩條偵測導電條量測的信號的總和。換言之,是依據相同的多條偵測導電條或全部的偵測導電條的信號的總和來挑選出延遲相位差。 In an example of the present invention, when the driving signal is supplied to the reference conductive strip or the selected conductive strip, the plurality of measured signals in the detecting conductive strip are detected by the detecting conductive strip One of the measured signals. In other words, the delay phase difference is selected based on the same signal that detects the conductive strip. In another example of the present invention, when the driving signal is supplied to the reference conductive strip or the selected conductive strip, the plurality of measured signals in the detecting conductive strip are detected by the detecting conductive At least two of the strips detect the sum of the signals measured by the strips. In other words, the delay phase difference is selected based on the sum of the signals of the same plurality of detecting conductive strips or all of the detecting conductive strips.
如先前所述,可以是每一條或每一組被驅動導電條上與每一條偵測導電條交疊的交疊區都有對應的延遲相位差。在以下說明中,是以每一條或每一組驅動導電條及分別交疊每一條或每一組偵測導電條作為一偵測組合。換言之,驅動信號可以是同時提供給一條或多條驅動導電條,並且信號也可以是由一條或多條偵測導電條量測。經量測產生一信號時,驅動信號被提供的一條或多條驅動導電條與被量測的一條或多條偵測導電條稱為一偵測組合。例如在單條驅動或多條驅動時,以一條導電條偵測信號值,或以兩條導電條量測一差值,又或是以三條導電條量測一雙差值。其中差值是相鄰的兩條導電條的信號的差,並且雙差值是三條相鄰導電條中,前兩條導電條的信號的差相減後兩條導電條的信號的差產生的差。 As previously described, there may be a corresponding delay phase difference for each or each set of overlapping regions of the driven conductive strip that overlap each of the detecting conductive strips. In the following description, each or each group of conductive strips is driven and each strip or each set of detecting strips is overlapped as a detection combination. In other words, the drive signal can be provided to one or more drive strips simultaneously, and the signal can also be measured by one or more sense strips. When a signal is generated by measurement, one or more driving strips provided by the driving signal and one or more detecting strips being measured are referred to as a detecting combination. For example, in a single drive or multiple drives, the signal value is detected by a conductive strip, or a difference is measured by two conductive strips, or a double difference is measured by three conductive strips. The difference is the difference between the signals of the two adjacent conductive strips, and the double difference is among the three adjacent conductive strips, and the difference between the signals of the first two conductive strips is subtracted from the difference between the signals of the two conductive strips. difference.
據此,在本發明的另一範例中,是一種觸摸屏的信號量測方法,如圖11所示。如步驟1110所示,提供一觸摸屏,觸摸屏包括平行排列的多條驅動導電條與平行排列的多條偵測導電條組成的多條導電條,所述的驅動導電條與所述的偵測導電條交疊於多個交疊區。此外,如步驟1120所示,以每一條或每一組驅動導電條及分別交疊每一條或每一組偵測導電條作為一偵測組合,並且如步驟1130所示,決定每一偵測組合的一延遲相位差。之後,如步驟1140所示,依序提供一驅動信號至所述的驅動導電條中的一條或一組,被提供驅動信號的偵測組合中被提供驅動信號的驅動導電條與交疊的偵測導電條產生互電容性耦合。接下來,如步驟1150所示,在每次驅動信號被提供時,被提供驅動信號的每一偵測組合的信號是延遲對應的相位差後才被量測。 Accordingly, in another example of the present invention, a signal measurement method of a touch screen is shown in FIG. As shown in step 1110, a touch screen is provided. The touch screen includes a plurality of conductive strips arranged in parallel and a plurality of strips of conductive strips arranged in parallel, the driving strips and the detecting conductive The strips overlap in multiple overlapping zones. In addition, as shown in step 1120, each or each group of conductive strips is driven and each strip or each set of detecting strips is overlapped as a detection combination, and as shown in step 1130, each detection is determined. A delayed phase difference of the combination. Thereafter, as shown in step 1140, a driving signal is sequentially supplied to one or a group of the driving conductive strips, and the driving conductive strips and overlapping detectors of the driving signals provided in the detecting combination of the driving signals are provided. The conductive strips are tested for mutual capacitive coupling. Next, as shown in step 1150, each time the drive signal is provided, the signal of each detected combination of the provided drive signals is measured after delaying the corresponding phase difference.
據此,在本發明的一種信號量測裝置中,步驟1140可以是由前述的驅動電路41來實施,並且步驟1150可以是由前述的偵測電路42來實施。 Accordingly, in a signal measuring apparatus of the present invention, step 1140 may be implemented by the aforementioned driving circuit 41, and step 1150 may be implemented by the aforementioned detecting circuit 42.
在本發明一範例中,步驟1130可以是包括:依序挑選所述的偵測組合之一作為被挑選偵測組合,可以是由前述的驅動電路41來實施;以及由多個預定相位差中挑選出被挑選偵測組合的延遲相位差,其中在驅動信號被提供給被挑選偵測組合時,延遲所述的延遲相位差後量測的信號大於延遲其他預定相位差後偵測到的信號,可以是由前述的偵測電路42來實施。 In an example of the present invention, the step 1130 may include: sequentially selecting one of the detection combinations as the selected detection combination, which may be implemented by the foregoing driving circuit 41; and by a plurality of predetermined phase differences Selecting a delay phase difference of the selected detection combination, wherein when the driving signal is provided to the selected detection combination, the signal measured after delaying the delay phase difference is greater than the signal detected after delaying other predetermined phase differences It can be implemented by the aforementioned detection circuit 42.
在本發明的另一範例中,決定每一偵測組合的延遲相位差還可以是如以下說明實施。挑選所述的偵測組合之一作為基準偵測組合,其 他偵測組合作為非基準偵測組合,以及依序挑選所述的非基準偵測組合之一作為被挑選偵測組合,可以是由前述驅動電路41來實施。此外,由多個預定相位差中挑選出基準偵測組合的延遲相位差,其中在驅動信號被提供給基準偵測組合時,延遲所述的延遲相位差後偵測的信號大於延遲其他預定相位差後偵測到的信號,並且以基準偵測組合延遲所述的延遲相位差後偵測的信號作為基準信號。另外,由多個預定相位差中挑選出被挑選偵測組合的延遲相位差,其中在驅動信號被提供給被挑選偵測組合時,延遲所述的延遲相位差後偵測的信號相較於延遲其他預定相位差後偵測到的信號最接近於基準信號。以上,可以是由前述的偵測電路42來實施。 In another example of the present invention, determining the delay phase difference for each detection combination may also be implemented as described below. Selecting one of the detection combinations as a reference detection combination, The detection combination is used as a non-reference detection combination, and one of the non-reference detection combinations is sequentially selected as the selected detection combination, which may be implemented by the foregoing driving circuit 41. In addition, a delay phase difference of the reference detection combination is selected from a plurality of predetermined phase differences, wherein when the driving signal is supplied to the reference detection combination, the signal detected after delaying the delay phase difference is greater than delaying other predetermined phases The signal detected after the difference is detected, and the signal detected by the reference detection combination delaying the delay phase difference is used as a reference signal. In addition, a delay phase difference of the selected detection combination is selected from a plurality of predetermined phase differences, wherein when the driving signal is supplied to the selected detection combination, the signal detected after delaying the delayed phase difference is compared with The signal detected after delaying other predetermined phase differences is closest to the reference signal. The above may be implemented by the detection circuit 42 described above.
在本發明的一第一實施例中,上述的延遲相位差可以採用各種延遲電路加以實施。比方說選擇多條固定延遲線當中之一、使用可程式化的數位延遲元件、或是延遲某些時脈信號的方式來實施。本領域的普通技術人員可以理解到有許多做法可以實施,本發明並不限定延遲相位差的實施方法。 In a first embodiment of the invention, the delay phase difference described above can be implemented using various delay circuits. For example, selecting one of a plurality of fixed delay lines, using a programmable digital delay element, or delaying certain clock signals is implemented. One of ordinary skill in the art will appreciate that many practices can be implemented and the present invention does not limit the implementation of delay phase differences.
在本發明的一第二實施例中,信號是由一控制電路量測,每一組偵測導電條的信號是分別經過一可變電阻後再進行量測,控制電路是依據每一組驅動導電條決定可變電阻的阻抗。例如,先挑選所述驅動導電條的一組作為基準導電條,其他導電條稱為非基準導電條。首先設定多個預設阻抗,並且在基準導電條(可能是一條或多條)被提供驅動信號時偵測一條偵測導電條的信號,或偵測多條或全部偵測導電條的信號的加總,作為一平準信號。另外,平準信號可以是落於一預設工作範圍,不一定需要是最佳或最大信號。換言之,任何可使平準信號落於預設工作範圍的預設阻 抗都可以作為基準導電條的平準阻抗。接下來在每一組非基準導電條被提供驅動信號值時,分別依據每一個預設阻抗調整可變電阻,並且偵測該條偵測導電條的信號,或偵測該多條或全部偵測導電條的信號的加總,以比較出最接進平準信號的預設阻抗,作為相對於被提供驅動信號的該組非基準導電條的平準阻抗。如此,可判斷出每一組驅動導電條的平準阻抗,依據每一組驅動導電條的平準阻抗來調整可變電阻的阻抗(調整可變電阻至平準阻抗),可得到較平準的影像,即影像中的信號間的差異很小。 In a second embodiment of the present invention, the signal is measured by a control circuit, and the signals of each group of detecting conductive strips are respectively measured through a variable resistor, and the control circuit is driven according to each group. The conductive strip determines the impedance of the variable resistor. For example, a set of the drive strips is first selected as a reference strip, and the other strips are referred to as non-reference strips. First, a plurality of preset impedances are set, and a signal for detecting the conductive strips is detected when the reference conductive strips (possibly one or more) are supplied with the driving signals, or signals of the plurality of or all of the detected conductive strips are detected. Add up as a leveling signal. In addition, the leveling signal may fall within a predetermined working range and does not necessarily need to be the best or maximum signal. In other words, any preset resistance that can cause the leveling signal to fall within the preset working range The anti-cord can be used as the leveling impedance of the reference strip. Next, when each set of non-reference conductive strips is supplied with a driving signal value, the variable resistor is respectively adjusted according to each preset impedance, and the signal of the detecting strip is detected, or the plurality or all of the detecting strips are detected. The sum of the signals of the conductive strips is measured to compare the preset impedance of the most advanced leveling signal as a leveling impedance relative to the set of non-reference conductive strips to which the drive signal is supplied. In this way, the leveling impedance of each group of driving strips can be determined, and the impedance of the variable resistor can be adjusted according to the leveling impedance of each group of driving strips (adjusting the variable resistor to the leveling impedance), thereby obtaining a relatively flat image, that is, The difference between the signals in the image is small.
前述說明中,在每次驅動信號被提供時,是以所有偵測導電條採用相同平準阻抗,本技術領域具有通常知識的技術人員可以推知,也可以是在每次驅動信號被提供時,每一組偵測導電條採用分別採用各自的平準阻抗。換言之,是在每次驅動信號被提供時,分別對每一組偵測導電條的每一預設阻抗進行信號的量測,以判斷出最趨***準信號的預測阻抗,據此分別取得每一組驅動導電條被提供驅動信號時每一條偵測導電條的平準阻抗,以分別調整電性耦合每一條偵測導電條的可變電阻的阻抗。 In the foregoing description, each time the drive signal is supplied, the same leveling impedance is used for all of the detected conductive strips, which can be inferred by those skilled in the art, or each time a drive signal is supplied, A set of detecting conductive strips adopts respective leveling impedances. In other words, each time the driving signal is supplied, the measurement of each predetermined impedance of each group of detecting strips is performed to determine the predicted impedance of the closest leveling signal, thereby obtaining each A set of driving conductive strips is provided with a leveling impedance of each of the strips when the driving signal is supplied to respectively adjust the impedance of the variable resistor electrically coupled to each of the detecting strips.
前述的控制電路除了可以由電子元件構成外,也可是由一顆或多顆積體電路IC來組成。在本發明的一範例中,可變電阻可以是建置在IC內,可由可編程程式(如IC內的韌體,firmware)來控制可變電阻的阻抗。例如可變電阻是由多個電阻構成,並且由多個開關控制,由不同的開關的啟與閉(on and off)來調整可變電阻的阻抗,由於可變電阻與可編程程式為公知技術,在此不再贅述。IC內的可變電阻以可編程程式控制可以經由軔體修正的方式適用於不同特性的觸控面板,可有效地降低成本,達到商業量產的目的。 The aforementioned control circuit may be composed of one or more integrated circuit ICs in addition to electronic components. In an example of the present invention, the variable resistor may be built into the IC, and the impedance of the variable resistor may be controlled by a programmable program such as a firmware in the IC. For example, the variable resistor is composed of a plurality of resistors and is controlled by a plurality of switches, and the impedance of the variable resistor is adjusted by on and off of different switches, since the variable resistor and the programmable program are well-known technologies. , will not repeat them here. The variable resistors in the IC can be controlled by the programmable program to be applied to different characteristics of the touch panel via the body correction method, which can effectively reduce the cost and achieve commercial mass production.
在本發明的一第三實施例中,信號是由一控制電路量測,每一組偵測導電條的信號是分別經過一偵測電路(如一積分器)來進行量測,控制電路是依據每一組驅動導電條決定偵測電路的放大倍率,比方說控制圖1與圖4所示的放大電路17的放大倍率。例如,先挑選所述驅動導電條的一組作為基準導電條,其他導電條稱為非基準導電條。首先設定多個預設放大倍率,並且在基準導電條(可能是一條或多條)被提供驅動信號時偵測一條偵測導電條的信號,或偵測多條或全部偵測導電條的信號的加總,作為一平準信號。另外,平準信號可以是落於一預設工作範圍,不一定需要是最佳或最大信號。換言之,任何可使平準信號落於預設工作範圍的預設放大倍率都可以作為基準導電條的平準放大倍率。接下來在每一組非基準導電條被提供驅動信號值時,分別依據每一個預設放大倍率調整偵測電路,並且偵測該條偵測導電條的信號,或偵測該多條或全部偵測導電條的信號的加總,以比較出最接進平準信號的預設放大倍率,作為相對於被提供驅動信號的該組非基準導電條的平準放大倍率。如此,可判斷出每一組驅動導電條的平準放大倍率,依據每一組驅動導電條的平準放大倍率來調整偵測電路的放大倍率,可得到較平準的影像,即影像中的信號間的差異很小。 In a third embodiment of the present invention, the signal is measured by a control circuit, and the signals of each group of detecting conductive strips are respectively measured by a detecting circuit (such as an integrator), and the control circuit is based on Each set of driving strips determines the magnification of the detecting circuit, for example, the magnification of the amplifying circuit 17 shown in FIGS. 1 and 4. For example, a set of the drive strips is first selected as a reference strip, and the other strips are referred to as non-reference strips. First, a plurality of preset magnifications are set, and a signal for detecting the conductive strips is detected when the reference conductive strips (possibly one or more) are supplied with driving signals, or signals for detecting multiple or all of the conductive strips are detected. The sum of the signals is used as a leveling signal. In addition, the leveling signal may fall within a predetermined working range and does not necessarily need to be the best or maximum signal. In other words, any preset magnification that can cause the leveling signal to fall within the preset working range can be used as the leveling magnification of the reference conductive strip. Next, when each set of non-reference conductive strips is provided with a driving signal value, the detection circuit is respectively adjusted according to each preset magnification, and the signal of the detecting conductive strip is detected, or the plurality or all of the signals are detected. A summation of the signals of the conductive strips is detected to compare the preset magnification of the most advanced leveling signal as a leveling magnification of the set of non-reference conductive strips to which the drive signal is supplied. In this way, the leveling magnification of each group of driving strips can be determined, and the magnification of the detecting circuit can be adjusted according to the leveling magnification of each group of driving strips, so that a relatively flat image can be obtained, that is, between the signals in the image. The difference is small.
前述說明中,在每次驅動信號被提供時,是以所有偵測導電條採用相同平準放大倍率,本技術領域具有通常知識的技術人員可以推知,也可以是在每次驅動信號被提供時,每一組偵測導電條採用分別採用各自的平準放大倍率。換言之,是在每次驅動信號被提供時,分別對每一組偵測導電條的每一預設放大倍率進行信號的量測,以判斷出最趨***準信號的預測放大倍率,據此分別取得每一組驅動導電條被提供驅動信號時 每一條偵測導電條的平準放大倍率。 In the foregoing description, each time the driving signal is supplied, the same leveling magnification is used for all of the detecting conductive strips, which can be inferred by those skilled in the art, or each time a driving signal is supplied, Each set of detecting conductive strips adopts respective leveling magnifications. In other words, each time the driving signal is supplied, the signal is measured for each preset magnification of each group of detecting strips to determine the predicted magnification of the closest leveling signal, respectively. When each set of driving strips is supplied with a driving signal Each level detects the leveling magnification of the conductive strip.
在本發明的一第四實施例中,信號是由一控制電路量測,每一組偵測導電條的信號是分別經過一偵測電路(如一積分器)來進行量測,控制電路是依據每一組驅動導電條決定偵測電路的量測時間。例如,先挑選所述驅動導電條的一組作為基準導電條,其他導電條稱為非基準導電條。首先設定多個預設量測時間,並且在基準導電條(可能是一條或多條)被提供驅動信號時偵測一條偵測導電條的信號,或偵測多條或全部偵測導電條的信號的加總,作為一平準信號。另外,平準信號可以是落於一預設工作範圍,不一定需要是最佳或最大信號。換言之,任何可使平準信號落於預設工作範圍的預設量測時間都可以作為基準導電條的平準量測時間。接下來在每一組非基準導電條被提供驅動信號值時,分別依據每一個預設量測時間調整偵測電路,並且偵測該條偵測導電條的信號,或偵測該多條或全部偵測導電條的信號的加總,以比較出最接***準信號的預設量測時間,作為相對於被提供驅動信號的該組非基準導電條的平準量測時間。如此,可判斷出每一組驅動導電條的平準量測時間,依據每一組驅動導電條的平準量測時間來調整偵測電路的量測時間,可得到較平準的影像,即影像中的信號間的差異很小。 In a fourth embodiment of the present invention, the signal is measured by a control circuit, and each group of signals for detecting the conductive strips is respectively measured by a detecting circuit (such as an integrator), and the control circuit is based on Each set of drive strips determines the measurement time of the detection circuit. For example, a set of the drive strips is first selected as a reference strip, and the other strips are referred to as non-reference strips. First, a plurality of preset measurement times are set, and a signal for detecting the conductive strip is detected when the reference conductive strip (possibly one or more) is supplied with the driving signal, or a plurality of or all detecting conductive strips are detected. The sum of the signals is used as a leveling signal. In addition, the leveling signal may fall within a predetermined working range and does not necessarily need to be the best or maximum signal. In other words, any preset measurement time that can cause the leveling signal to fall within the preset working range can be used as the leveling measurement time of the reference conductive strip. Next, when each set of non-reference conductive strips is provided with a driving signal value, the detecting circuit is respectively adjusted according to each preset measuring time, and the signal of detecting the strip is detected, or the plurality of strips or signals are detected. The sum of the signals of all the strips is detected to compare the preset measurement time closest to the leveling signal as the leveling time relative to the set of non-reference strips to which the drive signal is supplied. In this way, the leveling measurement time of each group of driving strips can be determined, and the measuring time of the detecting circuit can be adjusted according to the leveling measurement time of each group of driving strips, so that a relatively flat image can be obtained, that is, in the image. The difference between the signals is small.
前述說明中,在每次驅動信號被提供時,是以所有偵測導電條採用相同平準量測時間,本技術領域具有通常知識的技術人員可以推知,也可以是在每次驅動信號被提供時,每一組偵測導電條分別採用各自的平準量測時間。換言之,是在每次驅動信號被提供時,分別對每一組偵測導電條的每一預設量測時間進行信號的量測,以判斷出最趨***準信號 的預測量測時間,據此分別取得每一組驅動導電條被提供驅動信號時每一條偵測導電條的平準量測時間。 In the foregoing description, each time the drive signal is supplied, the same leveling time is used for all of the detected conductive strips, which can be inferred by those skilled in the art, or each time a drive signal is supplied. Each group of detecting conductive strips adopts respective leveling measurement time. In other words, each time the driving signal is supplied, the signal is measured for each preset measurement time of each group of detecting conductive strips to determine the closest leveling signal. The predicted measurement time is obtained according to which the leveling time of each of the detected conductive strips is obtained when each set of driving conductive strips is supplied with a driving signal.
在本發明的一第五實施例中,控制信號是依據每一組驅動導電條決定每一組驅動導電條被提供驅動信號的驅動時間長度。例如,先挑選所述驅動導電條的一組作為基準導電條,其他導電條稱為非基準導電條。首先設定多個預設驅動時間長度,並且在基準導電條(可能是一條或多條)被提供驅動信號達某一預設驅動時間時,偵測一條偵測導電條的信號,或偵測多條或全部偵測導電條信號的加總,作為一平準信號。另外,平準信號可以是落於一預設工作範圍,不一定需要是最佳或最大信號。換言之,任何可以使平準信號落於預設工作範圍的預設驅動時間都可以作為基準導電條的預設驅動時間。接下來在每一組非基準導電條被提供驅動信號時,分別依據每一個預設驅動時間調整驅動電路,並且偵測該條偵測導電條的信號,或偵測該多條或全部偵測導電條的信號的加總,以比較出最接***準信號的預設驅動時間,作為該組非基準導電條的平準驅動時間。如此,可判斷出每一組驅動導電條的平準驅動時間,依據每一組驅動導電條的平準驅動時間來調整驅動電路的驅動時間,可得到較平準的影像,即影像中的信號間的差異很小。 In a fifth embodiment of the present invention, the control signal is a driving time length for which each set of driving conductive strips is supplied with a driving signal according to each set of driving conductive strips. For example, a set of the drive strips is first selected as a reference strip, and the other strips are referred to as non-reference strips. First, a plurality of preset driving time lengths are set, and when a reference conductive strip (possibly one or more) is supplied with a driving signal for a predetermined driving time, detecting a signal for detecting the conductive strip, or detecting more The total of the strip or all detected strip signals is used as a leveling signal. In addition, the leveling signal may fall within a predetermined working range and does not necessarily need to be the best or maximum signal. In other words, any preset driving time that can cause the leveling signal to fall within the preset working range can be used as the preset driving time of the reference conductive strip. Next, when each set of non-reference conductive strips is provided with a driving signal, the driving circuit is respectively adjusted according to each preset driving time, and the signal of the detecting conductive strip is detected, or the multiple or all detecting is detected. The summing of the signals of the conductive strips to compare the preset driving time closest to the leveling signal as the leveling driving time of the set of non-reference conductive strips. In this way, the leveling driving time of each group of driving strips can be determined, and the driving time of the driving circuit can be adjusted according to the leveling driving time of each group of driving strips, so that a relatively flat image, that is, a difference between signals in the image can be obtained. Very small.
前述說明中,在每次驅動信號被提供時,是以所有驅動導電條採用相同平準驅動時間,本技術領域具有通常知識的技術人員可以推知,也可以是在每次驅動信號被提供時,每一組驅動導電條分別採用各自的平準驅動時間。換言之,是在每次驅動信號被提供時,分別對每一組驅動導電條提供長達某一驅動時間的驅動信號,以判斷出最趨***準信號的 預測驅動時間,據此分別取得每一組驅動導電條被提供驅動信號時的平準驅動時間。 In the foregoing description, each time the drive signal is supplied, the same leveling drive time is used for all of the drive bars, as will be appreciated by those of ordinary skill in the art, or each time a drive signal is provided, A set of drive strips respectively use their respective leveling drive times. In other words, each time the driving signal is supplied, each group of driving strips is respectively provided with a driving signal for a certain driving time to determine the closest leveling signal. The driving time is predicted, and accordingly, the leveling driving time when each of the driving strips is supplied with the driving signal is obtained.
在本發明的一第六實施例中,控制信號是依據每一組驅動導電條決定每一組驅動導電條被提供驅動信號的驅動電位。例如,先挑選所述驅動導電條的一組作為基準導電條,其他導電條稱為非基準導電條。首先設定多個預設驅動電位,並且在基準導電條(可能是一條或多條)以某一預設驅動電位提供驅動信號時,偵測一條偵測導電條的信號,或偵測多條或全部偵測導電條信號的加總,作為一平準信號。另外,平準信號可以是落於一預設工作範圍,不一定需要是最佳或最大信號。換言之,任何可以使平準信號落於預設工作範圍的預設驅動電位都可以作為基準導電條的預設驅動電位。接下來在每一組非基準導電條被提供驅動信號時,分別依據每一個預設驅動電位調整驅動電路,並且偵測該條偵測導電條的信號,或偵測該多條或全部偵測導電條的信號的加總,以比較出最接***準信號的預設驅動電位,作為該組非基準導電條的平準驅動電位。如此,可判斷出每一組驅動導電條的平準驅動電位,依據每一組驅動導電條的平準驅動電位來調整驅動電路的驅動電位,可得到較平準的影像,即影像中的信號間的差異很小。 In a sixth embodiment of the invention, the control signal is a drive potential that determines a drive signal for each set of drive strips to be provided in accordance with each set of drive strips. For example, a set of the drive strips is first selected as a reference strip, and the other strips are referred to as non-reference strips. First, a plurality of preset driving potentials are set, and when the reference conductive strips (possibly one or more) provide a driving signal at a predetermined driving potential, detecting a signal detecting the conductive strips, or detecting a plurality of or All detected the sum of the bus bar signals as a leveling signal. In addition, the leveling signal may fall within a predetermined working range and does not necessarily need to be the best or maximum signal. In other words, any preset driving potential that can cause the leveling signal to fall within the preset operating range can be used as the preset driving potential of the reference conductive strip. Next, when each set of non-reference conductive strips is provided with a driving signal, the driving circuit is respectively adjusted according to each preset driving potential, and the signal of the detecting conductive strip is detected, or the multiple or all detecting is detected. The sum of the signals of the conductive strips is compared to the preset drive potential closest to the leveling signal as the leveling drive potential of the set of non-reference conductive strips. In this way, the leveling driving potential of each group of driving strips can be determined, and the driving potential of the driving circuit can be adjusted according to the leveling driving potential of each group of driving strips, so that a relatively flat image, that is, a difference between signals in the image can be obtained. Very small.
前述說明中,在每次驅動信號被提供時,是以所有驅動導電條採用相同平準驅動電位,本技術領域具有通常知識的技術人員可以推知,也可以是在每次驅動信號被提供時,每一組驅動導電條分別採用各自的平準驅動電位。換言之,是在每次驅動信號被提供時,分別對每一組驅動導電條提供某一驅動電位,以判斷出最趨***準信號的預測驅動電位, 據此分別取得每一組驅動導電條被提供驅動信號時的平準驅動電位。 In the foregoing description, each time the drive signal is supplied, the same leveling drive potential is used for all of the drive strips, as will be appreciated by those of ordinary skill in the art, or each time a drive signal is provided, each A set of drive strips respectively use their respective leveling drive potentials. In other words, each time the driving signal is supplied, a certain driving potential is respectively supplied to each group of driving strips to determine the predicted driving potential of the closest leveling signal. Accordingly, the leveling driving potential when each of the driving strips is supplied with the driving signal is obtained.
在本發明的一第七實施例中,可以依據每一組驅動導電條來決定每一組驅動導電條被提供驅動信號的驅動時機點。例如,先挑選所述驅動導電條的一組作為基準導電條,其他導電條稱為非基準導電條。首先設定多個預設驅動時機點,並且在基準導電條(可能是一條或多條)於某一預設驅動時機點被提供驅動信號的時候,偵測一條偵測導電條的信號,或偵測多條或全部偵測導電條信號的加總,作為一平準信號。另外,平準信號可以是落於一預測工作範圍,不一定需要是最佳或最大信號。換言之,任何可以使平準信號落於預設工作範圍的預設驅動時機點都可以作為基準導電條的預設驅動時機點。接下來在每一組非基準導電條被提供驅動信號時,分別依據每一個預設驅動時機點調整驅動電路提供驅動信號的時機,並且偵測該條偵測導電條的信號,或偵測該多條或全部偵測導電條的信號的加總,以比較出最接***準信號的預設驅動時機點,作為該組非基準導電條的平準驅動時機點。如此,可判斷出每一組驅動導電條的驅動時機點,依據每一組驅動導電條的驅動時機點來驅動,可得到較平整的影像,即影像中的信號間的差異很小。 In a seventh embodiment of the present invention, the driving timing of each of the driving strips to be supplied with the driving signal can be determined according to each set of driving strips. For example, a set of the drive strips is first selected as a reference strip, and the other strips are referred to as non-reference strips. First, a plurality of preset driving timing points are set, and when the reference conductive strip (possibly one or more) is provided with a driving signal at a predetermined driving timing, detecting a signal for detecting the conductive strip, or detecting Measure the sum of multiple or all detected conductive strip signals as a leveling signal. In addition, the leveling signal may fall within a predicted working range and does not necessarily need to be the best or maximum signal. In other words, any preset driving timing point that can cause the leveling signal to fall within the preset working range can be used as the preset driving timing point of the reference conductive strip. Next, when each set of non-reference conductive strips is provided with a driving signal, the timing of providing the driving signal by the driving circuit is adjusted according to each preset driving timing point, and detecting the signal of the detecting conductive strip, or detecting the signal The sum of the signals of the plurality of or all of the detected conductive strips is compared to the preset driving timing point closest to the leveling signal as the leveling driving timing of the set of non-reference conductive strips. In this way, it can be determined that the driving timing of each group of driving strips is driven according to the driving timing of each group of driving strips, so that a relatively flat image can be obtained, that is, the difference between the signals in the image is small.
前述說明中,在每次驅動信號被提供時,是以所有驅動導電條採用相同驅動時機點,本技術領域具有通常知識的技術人員可以推知,也可以是在每次驅動信號被提供時,每一組驅動導電條分別採用各自的平準驅動時機點。換言之,是在每次驅動信號被提供時,分別是在其驅動時間點才對每一組驅動導電條提供驅動信號,以判斷出最趨***準信號的預測驅動時機點,據此分別取得每一組驅動導電條被提供驅動信號時的驅動 時機點。 In the foregoing description, each time the drive signal is supplied, the same drive timing is used for all of the drive strips, and those skilled in the art can infer that each time a drive signal is supplied, A set of drive strips respectively use their respective leveling drive timing points. In other words, each time the driving signal is supplied, a driving signal is supplied to each group of driving strips at the driving time point thereof to determine the predicted driving timing point of the closest leveling signal, and accordingly, each is obtained. a set of drivers when the drive strip is driven to provide a drive signal Timing.
本技術領域具有通常知識的技術人員可以推知,在第七實施例中,改變驅動時機點在效果上等同於第一實施例的調整偵測電路的延遲相位差。兩者分別從驅動電路與偵測電路兩方面去因應信號在驅動導電條與偵測導電條之間的傳播時間。可以調整偵測電路的延遲相位差,也可以調整驅動電路的驅動時機點,藉以增強或者是減少接收信號的強度。 A person skilled in the art having ordinary knowledge can infer that in the seventh embodiment, changing the driving timing is equivalent in effect to the delay phase difference of the adjustment detecting circuit of the first embodiment. The two take the propagation time between the driving strip and the detecting strip from the driving circuit and the detecting circuit. The delay phase difference of the detection circuit can be adjusted, and the driving timing of the driving circuit can also be adjusted to enhance or reduce the strength of the received signal.
在前述說明中,可以由第一實施例、第二實施例、第三實施例、第四實施例、第五實施例、第六實施例與第七實施例挑選一種或挑選多種混合實施,本發明並不加以限制。此外,在量測平準信號時,可以是挑選距偵測導電條最遠的一條或多條偵測導電條來進行信號的偵測,以產生平準信號。例如,可以是以最遠的一條偵測導電條的信號來產生平準信號,或是最遠兩條偵測導電條的差動信號來產生平準信號(差值),也可以是最遠三條偵測導電條中前兩條與後兩條偵測導電條的差動信號的差來產生平準信號(雙差值)。換言之,平準信號可以是信號值、差值或雙差值,也可以是其他依據一條或多條偵測導電條的信號產生的值。 In the foregoing description, the first embodiment, the second embodiment, the third embodiment, the fourth embodiment, the fifth embodiment, the sixth embodiment, and the seventh embodiment may be selected one or a plurality of mixed implementations, The invention is not limited. In addition, when measuring the leveling signal, one or more detecting conductive strips farthest from the detecting conductive strip may be selected for signal detection to generate a leveling signal. For example, the farthest signal of the detecting strip can be used to generate the leveling signal, or the farthest detecting the differential signal of the strip to generate the leveling signal (difference value), or the farthest three detectors The difference between the differential signals of the first two and the last two detecting conductive strips in the conductive strip is measured to generate a leveling signal (double difference). In other words, the leveling signal can be a signal value, a difference value, or a double difference value, or can be other values generated based on one or more signals detecting the conductive strip.
請參照圖12,為依據本發明的一種觸摸屏的信號量測方法。如步驟1210所示,提供一觸摸屏,觸摸屏包括平行排列的多條驅動導電條與平行排列的多條偵測導電條組成的多條導電條,所述的驅動導電條與所述的偵測導電條交疊於多個交疊區。此外,如步驟1220所示,挑選所述的驅動導電條的一條或一組驅動導電條作為基準導電條,其他條或其他組驅動導電條作為非基準導電條。基準導電條可以第一條或第一組驅動導電條,也可以是其他位置的驅動導電條,本發明並不加以限制。接下來,如步驟1230 所示,提供一驅動信號給基準導電條,並且依據所述參數組之一來偵測所述的至少一條偵測導電條的信號。並且,如步驟1240所示,在所述的至少一條偵測導電條的信號未在一預設信號範圍內時,依序依據其他參數組之一來偵測所述的至少一條偵測導電條的信號,直到所述的至少一條偵測導電條的信號落在預設信號範圍內。此外,如步驟1250所示,以基準導電條被提供驅動信號時所述的至少一條偵測導電條落於預設信號範圍內的信號作為一平準信號,並且以基準導電條依據的參數組作為基準導電條的初始參數組。再接下來,如步驟1260所示,分別依序提供驅動信號給每一條或每一組非基準導電條,並且,如步驟1270所示,在每一條或每一組非基準導電條被提供驅動信號時,分別依序依據所述的參數組一來偵測所述的至少一條偵測導電條的信號。之後,如步驟1280所示,決定在每一條或每一組非基準導電條的初始參數組,其中分別在每一條或每一組非基準導電條被提供驅動信號值,依據初始參數組偵測所述的至少一條偵測導電條的信號相較於依據其他參數組偵測所述的至少一條偵測導電條的信號最接***準信號。 Please refer to FIG. 12, which is a signal measurement method of a touch screen according to the present invention. As shown in step 1210, a touch screen is provided. The touch screen includes a plurality of conductive strips arranged in parallel and a plurality of strips of conductive strips arranged in parallel, the driving strips and the detecting conductive The strips overlap in multiple overlapping zones. In addition, as shown in step 1220, one or a set of drive strips of the drive strip are selected as reference strips, and other strips or other sets of strips act as non-reference strips. The reference conductive strips may drive the conductive strips in the first or first group, or may be driven strips in other locations, and the invention is not limited thereto. Next, as in step 1230 As shown, a driving signal is provided to the reference conductive strip, and the signal of the at least one detecting conductive strip is detected according to one of the parameter sets. And, as shown in step 1240, when the signal of the at least one detecting conductive strip is not within a preset signal range, detecting the at least one detecting conductive strip according to one of the other parameter groups. The signal until the signal of the at least one detecting conductive strip falls within a preset signal range. In addition, as shown in step 1250, when the reference conductive strip is supplied with the driving signal, the at least one detecting conductive strip falls within the preset signal range as a leveling signal, and the parameter group according to the reference conductive strip is used as a parameter group. The initial parameter set of the reference strip. Next, as shown in step 1260, drive signals are sequentially provided to each or each set of non-reference conductive strips, and, as shown in step 1270, each or each set of non-reference conductive strips is provided with a drive. During the signal, the signal of the at least one detecting conductive strip is detected according to the parameter group 1 in sequence. Then, as shown in step 1280, determining an initial parameter set in each or each set of non-reference conductive strips, wherein each or each set of non-reference conductive strips is provided with a driving signal value, according to the initial parameter group detection The at least one signal detecting the conductive strip is closest to the leveling signal than the signal detecting the at least one detecting conductive strip according to the other parameter group.
依據先前所述的第一、第二、第三、第四、第五、第六與第七實施例,參數組可以是用來改變延遲相位差、可變電阻的的阻值、偵測電路的放大倍率、偵測電路的量測時間、驅動電路的驅動時間、驅動電路的驅動電位、與驅動電路的驅動時機點。在本發明的一第一範例中,偵測電路是經由一可變電阻連接至所述的至少一偵測導電條,其中可變電阻的的阻值是依據被提供驅動信號的導電條的初始參數來改變。在本發明的一第二範例中,偵測信號的時間是依據被提供驅動信號的導電條的初始參數來改變。在本發明的一第三範例中,所述的至少一偵測導電條是經由一放 大器放大後提供給偵測電路,偵測電路其中的放大電路放大的倍率是依據被提供驅動信號的導電條的初始參數來改變。此外,在本發明的一第四範例中,所述的至少一偵測導電條的信號是經過一延遲相位差後才開始偵測,其中延遲相位差是依據被提供驅動信號的導電條的初始參數來改變。在本發明的一第五範例中,所述的驅動時間是依據被提供驅動信號的導電條的初始參數來改變。在本發明的一第六範例中,所述的驅動電位是依據被提供驅動信號的導電條的初始參數來改變。在本發明的一第七範例中,所述的驅動時機點是根據被提供驅動信號的導電條的初始參數來改變。 According to the first, second, third, fourth, fifth, sixth and seventh embodiments previously described, the parameter group may be a resistance value for detecting a delay phase difference, a variable resistance, and a detection circuit. The magnification, the measurement time of the detection circuit, the drive time of the drive circuit, the drive potential of the drive circuit, and the drive timing of the drive circuit. In a first example of the present invention, the detecting circuit is connected to the at least one detecting conductive strip via a variable resistor, wherein the resistance of the variable resistor is based on the initial of the conductive strip to which the driving signal is supplied. Parameters to change. In a second example of the present invention, the time at which the signal is detected is changed in accordance with the initial parameters of the conductive strip to which the drive signal is supplied. In a third example of the present invention, the at least one detecting conductive strip is via a The amplifier is amplified and supplied to the detecting circuit, and the magnification of the amplifying circuit of the detecting circuit is changed according to the initial parameter of the conductive strip to which the driving signal is supplied. In addition, in a fourth example of the present invention, the at least one detecting strip is detected after a delay phase difference, wherein the delay phase difference is based on the initiality of the conductive strip to which the driving signal is supplied. Parameters to change. In a fifth example of the present invention, the driving time is changed in accordance with an initial parameter of a conductive strip to which a driving signal is supplied. In a sixth example of the present invention, the driving potential is changed in accordance with an initial parameter of a conductive strip to which a driving signal is supplied. In a seventh example of the present invention, the driving timing point is changed according to an initial parameter of a conductive strip to which a driving signal is supplied.
據此,請參照圖4,依據本發明的一種觸摸屏的信號量測包括:一觸摸屏、一驅動電路41、一偵測電路42與一控制電路45。觸摸屏包括平行排列的多條驅動導電條151與平行排列的多條偵測導電條152組成的多條導電條,所述的驅動導電條151與所述的偵測導電條152交疊於多個交疊區。驅動電路41提供一驅動信號給一條或一組驅動導電條151,其中所述的驅動導電條151的一條或一組驅動導電條151為基準導電條,並且其他條或其他組驅動導電條151為非基準導電條。偵測電路42在每次驅動信號被提供時,依據多組參數組之一由至少一偵測導電條152的信號產生被提供驅動信號的驅動導電條151的一評估信號。控制電路45,由所述的參數組挑選一組作為基準導電條的初始參數組,以依據初始參數組由偵測電路產生的評估信號作為一平準信號,並且由所述的參數組分別挑選每一條或每一組非基準導電條的初始參數組,其中每一條或每一組非基準導電條依據初始參數組產生的評估信號相較於依據其他參數組產生的評估信號最接***準信號。此外,所述的參數組可以是儲存在儲存電路43。 Therefore, referring to FIG. 4, the signal measurement of a touch screen according to the present invention includes: a touch screen, a driving circuit 41, a detecting circuit 42 and a control circuit 45. The touch screen includes a plurality of conductive strips 151 arranged in parallel and a plurality of conductive strips 152 arranged in parallel. The driving strips 151 and the detecting strips 152 overlap the plurality of strips. Overlapping area. The driving circuit 41 provides a driving signal to one or a group of driving conductive strips 151, wherein one or a group of driving conductive strips 151 of the driving conductive strips 151 is a reference conductive strip, and other strips or other groups of driving conductive strips 151 are Non-reference conductive strip. The detecting circuit 42 generates an evaluation signal of the driving conductive strip 151 to which the driving signal is supplied by the signal of the at least one detecting conductive strip 152 according to one of the plurality of sets of parameter groups each time the driving signal is supplied. The control circuit 45 selects, by the parameter group, a set of initial parameters as the reference conductive strips, so as to use the evaluation signal generated by the detecting circuit as a leveling signal according to the initial parameter group, and select each by the parameter group An initial parameter set of one or each set of non-reference conductive strips, wherein each or each set of non-reference conductive strips produces an evaluation signal that is closest to the leveling signal based on the evaluation signal generated from the other parameter sets. Furthermore, the parameter set may be stored in the storage circuit 43.
評估信號可以是依據一條或多條偵測導電條的信號產生。例如,評估信號是由所述的偵測導電條之一產生。又例如,評估信號是由所述的偵測導電條的至少兩條的信號加總產生。 The evaluation signal can be generated based on one or more signals that detect the conductive strip. For example, the evaluation signal is generated by one of the detected conductive strips. For another example, the evaluation signal is generated by summing up at least two signals of the detecting conductive strips.
此外,在本發明的一範例中,控制器可以是依序依據所述的參數組之一分別由偵測電路產生基準導電條的評估信號,並且以產生的最大的基準導電條的評估信號所依據的參數組作為基準導電條的初始參數組。在本發明的另一範例中,控制器可以是依序依據所述的參數組之一分別由偵測電路產生基準導電條的評估信號,並且以第一個符合一條件的基準導電條的評估信號所依據的參數組作為基準導電條的初始參數組。 In addition, in an example of the present invention, the controller may sequentially generate an evaluation signal of the reference conductive strip by the detecting circuit according to one of the parameter groups, and use the generated evaluation signal of the largest reference conductive strip. The parameter set is used as the initial parameter set of the reference strip. In another example of the present invention, the controller may be configured to sequentially generate an evaluation signal of the reference conductive strip by the detecting circuit according to one of the parameter groups, and evaluate the first reference conductive strip that meets a condition. The parameter set on which the signal is based serves as the initial parameter set of the reference strip.
依據先前所述的第一、第二、第三、第四、第五、第六與第七實施例,參數組可以是用來改變延遲相位差、可變電阻的的阻值、偵測電路的放大倍率、偵測電路的量測時間、驅動電路的驅動時間、驅動電路的驅動電位與驅動電路的驅動時機點。在本發明的一第一範例中,偵測電路是經由一可變電阻連接至所述的至少一偵測導電條,其中偵測電路是依據被提供驅動信號的導電條的初始參數來改變可變電阻的阻值。在本發明的一第二範例中,偵測電路是依據被提供驅動信號的導電條的初始參數來改變偵測信號的時間。在本發明的一第三範例中,所述的至少一偵測導電條是經由一放大器放大後提供給所述的偵測電路,其中偵測電路的放大器是依據被提供驅動信號的導電條的初始參數來改變放大電路放大的倍率。此外,在本發明的一第四範例中,偵測電路是經過一延遲相位差後才開始量測所述的至少一偵測導電條的信號,其中偵測電路是依據被提供驅動信號的導電條的初始參數來改變延遲相位差。在本發明的一第五範例中,所 述的驅動時間是依據被提供驅動信號的導電條的初始參數來改變。在本發明的一第六範例中,所述的驅動電位是依據被提供驅動信號的導電條的初始參數來改變。在本發明的一第七範例中,所述的驅動時機點是依據被提供驅動信號的導電條的初始參數來改變。 According to the first, second, third, fourth, fifth, sixth and seventh embodiments previously described, the parameter group may be a resistance value for detecting a delay phase difference, a variable resistance, and a detection circuit. The magnification, the measurement time of the detection circuit, the drive time of the drive circuit, the drive potential of the drive circuit, and the drive timing of the drive circuit. In a first example of the present invention, the detecting circuit is connected to the at least one detecting conductive strip via a variable resistor, wherein the detecting circuit is changed according to an initial parameter of the conductive strip to which the driving signal is supplied. The resistance of the variable resistor. In a second example of the present invention, the detecting circuit changes the time of detecting the signal according to an initial parameter of the conductive strip to which the driving signal is supplied. In a third example of the present invention, the at least one detecting conductive strip is amplified by an amplifier and provided to the detecting circuit, wherein the amplifier of the detecting circuit is based on the conductive strip provided with the driving signal. The initial parameters are used to change the magnification of the amplification circuit. In addition, in a fourth example of the present invention, the detecting circuit starts measuring the signal of the at least one detecting conductive strip after a delay phase difference, wherein the detecting circuit is conductive according to the supplied driving signal. The initial parameters of the bar are used to change the delay phase difference. In a fifth example of the present invention, The drive time is varied depending on the initial parameters of the conductive strip to which the drive signal is supplied. In a sixth example of the present invention, the driving potential is changed in accordance with an initial parameter of a conductive strip to which a driving signal is supplied. In a seventh example of the present invention, the driving timing is changed in accordance with an initial parameter of a conductive strip to which a driving signal is supplied.
在上述的第二範例當中,係依據被提供驅動信號的導電條來改變偵測信號的時間。類似地,在上述的第五範例當中,係依據被提供驅動信號的導電條來改變驅動時間。相似地,在上述的第七範例當中,係依據被提供驅動信號的導電條來改變提供驅動信號的時機點。偵測時間與驅動時間均與時間的長度相關。 In the second example described above, the time of detecting the signal is changed according to the conductive strip to which the driving signal is supplied. Similarly, in the fifth example described above, the driving time is changed in accordance with the conductive strip to which the driving signal is supplied. Similarly, in the seventh example described above, the timing of providing the driving signal is changed in accordance with the conductive strip to which the driving signal is supplied. Both the detection time and the drive time are related to the length of time.
在本發明的一實施例當中,上述的驅動時間與偵測時間全部同步。換言之,在此情況下,偵測時間的長度必然等於驅動時間的長度。調整驅動時間的長度,也要調整偵測時間的長度。調整偵測時間的長度,也要調整驅動時間的長度。本領域的普通技術人員可以推知,驅動時間與偵測時間全部同步的時候,就不會浪費未在偵測時間內驅動導電條所需要的能量。也就是說,這個實施例具有較高的能源效率。 In an embodiment of the invention, the driving time and the detecting time are all synchronized. In other words, in this case, the length of the detection time must be equal to the length of the driving time. Adjust the length of the drive time, and also adjust the length of the detection time. Adjust the length of the detection time, and also adjust the length of the drive time. One of ordinary skill in the art can infer that when the driving time and the detecting time are all synchronized, the energy required to drive the conductive strips in the detecting time is not wasted. That is to say, this embodiment has higher energy efficiency.
在本發明的另一實施例當中,上述的驅動時間與偵測時間至少有部分是同時。在某些情況下,偵測時間的長度可以等於驅動時間的長度。但在部分偵測時間之內,相應的驅動導電條並未接收驅動信號。同樣地,在部分驅動時間之內,偵測電路並未偵測相應的偵測導電條。在另一些情況下,偵測時間的長度大於驅動時間的長度;也就是說,在部分偵測時間之內,相應的驅動導電條並未接收驅動信號。在剩下的情況當中,驅動時間的長度大於偵測時間的長度;也就是說,在部分驅動時間之內,偵 測電路並未偵測相應的偵測導電條。本領域的普通技術人員可以推知,上述的驅動時間與偵測時間只有部分是同時的實施例,其能源效率較驅動時間與偵測時間全部同步的實施例來得差。 In another embodiment of the invention, the driving time and the detecting time are at least partially simultaneous. In some cases, the length of the detection time can be equal to the length of the drive time. However, within the partial detection time, the corresponding driving strip does not receive the driving signal. Similarly, within a portion of the drive time, the detection circuit does not detect the corresponding detection strip. In other cases, the length of the detection time is greater than the length of the driving time; that is, within a portion of the detection time, the corresponding driving strip does not receive the driving signal. In the remaining case, the length of the driving time is greater than the length of the detection time; that is, within part of the driving time, the detection The measuring circuit does not detect the corresponding detecting conductive strip. A person skilled in the art can infer that the above-mentioned driving time and detection time are only partially simultaneous embodiments, and the energy efficiency is worse than the embodiment in which the driving time and the detecting time are all synchronized.
然而在現實世界當中,由於驅動電路所發出的驅動信號必須透過驅動導電條與其他電路的傳輸,以及受感應的偵測導電條及其他電路的傳輸,經過一延遲時間或相位差才會抵達偵測電路。換言之,若驅動時間與偵測時間完全同時的話,在偵測時間的初期可能接收不到驅動信號,在偵測時間結束之後,還持續收到驅動信號。因此,本領域的普通技術人員可以得知,只有在確切知道其延遲時間或相位差的時候,驅動時間與偵測時間才能夠同步。也就是說,驅動時間長度等同於偵測時間長度,但偵測時間開始的時機點要晚於驅動時間達上述的相位差。同樣地,在現實世界當中,由於觸摸屏或觸控面板的製程,使得每一導電條的材質或阻值並非相同。此外,環境因子溼度與溫度也不一定會對每一導電條造成相同的影響。所以,未必能夠確切得知上述的延遲時間或相位差。 However, in the real world, the driving signal emitted by the driving circuit must pass through the transmission of the driving conductive strip and other circuits, and the transmission of the induced detecting conductive strip and other circuits, and the delay is obtained after a delay time or phase difference. Measuring circuit. In other words, if the driving time and the detecting time are completely the same, the driving signal may not be received at the beginning of the detecting time, and the driving signal is continuously received after the detecting time ends. Therefore, one of ordinary skill in the art will appreciate that the drive time and the detection time can be synchronized only when the delay time or phase difference is known exactly. That is to say, the driving time length is equivalent to the detection time length, but the timing of the detection time starts later than the driving time up to the above phase difference. Similarly, in the real world, the material or resistance of each conductive strip is not the same due to the process of the touch screen or the touch panel. In addition, environmental factors such as humidity and temperature do not necessarily have the same effect on each conductive strip. Therefore, the delay time or phase difference described above may not be known exactly.
在此需要指出同時或同步的一個優點,是可以加速掃描時間。在某一個範例當中,當驅動時間較長於偵測時間的情況下,即便偵測時間已然結束,但仍需要等待驅動時間結束之後,才能掃描下一條或下一組驅動電極。如果能讓偵測時間同時甚至同步於驅動時間,則無須等待驅動時間,就可以立刻掃描下一條或下一組驅動電極。 One advantage that needs to be pointed out at the same time or in synchronization is that the scan time can be accelerated. In one example, when the driving time is longer than the detection time, even if the detection time has ended, it is necessary to wait for the end of the driving time before scanning the next or next set of driving electrodes. If the detection time can be synchronized with the drive time at the same time, the next or next set of drive electrodes can be scanned immediately without waiting for the drive time.
在本發明的某些實施例中,儘管可以調整驅動時間的長短,但發出驅動信號的時機點是不變的週期。比方說,可以在t時驅動第一條驅動電極,在t+3時停止驅動;在t+5時驅動第二條驅動電極,在t+7.5時停止; 在t+10時驅動第三條電極,在t+12時停止驅動。對第一條驅動電極而言,驅動時間持續了3個時間單位,對於第二條驅動電極而言,驅動時間持續了2.5個時間單位,對第三條驅動電極來說,驅動時間只持續了2個時間單位。但無論驅動時間如何變化,相鄰的驅動電極被驅動的時機點均隔了5個時間單位。亦即第二條驅動電極被驅動的時間距離第一條驅動電極被驅動的時間差了5個時間單位;而第三條驅動電極被驅動的時間距離第二條驅動電極被驅動的時間差了5個時間單位。 In some embodiments of the invention, although the length of the drive time can be adjusted, the timing at which the drive signal is issued is a constant period. For example, the first drive electrode can be driven at t, the drive is stopped at t+3; the second drive electrode is driven at t+5, and stops at t+7.5; The third electrode is driven at t+10 and the drive is stopped at t+12. For the first drive electrode, the drive time lasted for 3 time units. For the second drive electrode, the drive time lasted 2.5 time units. For the third drive electrode, the drive time only lasted. 2 time units. However, regardless of the change in driving time, the timing points at which the adjacent drive electrodes are driven are separated by 5 time units. That is, the time when the second driving electrode is driven is 5 time units from the time when the first driving electrode is driven; and the time when the third driving electrode is driven is 5 times shorter than the driving time of the second driving electrode. time unit.
在本發明的另一些實施例中,除了可以調整驅動時間的長短外,還可以調整發出驅動信號的時機點。比方說,可以在t時驅動第一條驅動電極,在t+3時停止驅動;在t+5.5時驅動第二條驅動電極,在t+8.5時停止;在t+11.5時驅動第三條電極,在t+14.5時停止驅動。對第一條驅動電極而言,驅動時間持續了3個時間單位,對於第二條驅動電極而言,驅動時間持續了3個時間單位,對第三條驅動電極來說,驅動時間也持續了3個時間單位。儘管驅動時間的長度沒有變化,但相鄰的驅動電極被驅動的時機點發生了改變。亦即第二條驅動電極被驅動的時間距離第一條驅動電極被驅動的時間差了5.5個時間單位;而第三條驅動電極被驅動的時間距離第二條驅動電極被驅動的時間差了6個時間單位。 In other embodiments of the present invention, in addition to adjusting the length of the driving time, the timing of issuing the driving signal can be adjusted. For example, the first drive electrode can be driven at t, and the drive is stopped at t+3; the second drive electrode is driven at t+5.5, stopping at t+8.5; driving the third at t+11.5 The electrode stops driving at t+14.5. For the first drive electrode, the drive time lasts for 3 time units, for the second drive electrode, the drive time lasts for 3 time units, and for the third drive electrode, the drive time continues. 3 time units. Although the length of the driving time does not change, the timing at which the adjacent driving electrodes are driven changes. That is, the time when the second driving electrode is driven is 5.5 time units from the time when the first driving electrode is driven; and the time when the third driving electrode is driven is 6 times shorter than the driving time of the second driving electrode. time unit.
請參照圖13,其為根據本發明一實施例的觸控系統之方塊示意圖。在此觸控系統當中,包含一控制模組1310與一前端模組(front-end module)1340,以及一觸控面板或觸控螢幕。在上述的觸控面板或觸控螢幕上可以更包含多條第一導電條或驅動導電條或驅動電極151,以及多條第二導電條或偵測導電條或偵測電極152。 Please refer to FIG. 13 , which is a block diagram of a touch system according to an embodiment of the invention. The touch system includes a control module 1310 and a front-end module 1340, and a touch panel or a touch screen. The plurality of first conductive strips or the driving conductive strips or the driving electrodes 151 and the plurality of second conductive strips or the detecting conductive strips or the detecting electrodes 152 may be further included on the touch panel or the touch screen.
上述之控制模組1310與前端模組1340可以是位於單一積體電路,也可以位於多個以上的積體電路。若位於單一積體電路之內,也可以是位於相同或不同的晶片。兩者可以是相同的製程,也可以是不同的製程。簡而言之,本發明並不限定其實施態樣。 The control module 1310 and the front end module 1340 may be located in a single integrated circuit, or may be located in a plurality of integrated circuits. If they are located within a single integrated circuit, they may be on the same or different wafers. Both can be the same process or different processes. In short, the present invention is not limited to the embodiment thereof.
上述的前端模組1340可以包含一驅動模組1341與一偵測模組1342。請參照圖4的驅動電路41與偵測電路42。在一實施例中,驅動模組1341可以包含驅動電路41的全部或部分元件。在一範例中,驅動模組1341可以接收時脈信號,並且根據時脈信號產生驅動信號,並且透過一驅動選擇電路將驅動信號提供至一條、多條或全部驅動電極151。此驅動信號可以是方波、弦波、或是任何合成波形。控制模組1310可以根據被驅動的驅動電極151,設定驅動信號的波形、電位、驅動時間長度、以及驅動時機等。 The front end module 1340 can include a driving module 1341 and a detecting module 1342. Please refer to the driving circuit 41 and the detecting circuit 42 of FIG. 4 . In an embodiment, the drive module 1341 may include all or a portion of the components of the drive circuit 41. In an example, the driving module 1341 can receive the clock signal, and generate a driving signal according to the clock signal, and provide the driving signal to one, a plurality of or all of the driving electrodes 151 through a driving selection circuit. The drive signal can be a square wave, a sine wave, or any composite waveform. The control module 1310 can set the waveform, the potential, the driving time length, the driving timing, and the like of the driving signal in accordance with the driven driving electrode 151.
在一實施例中,偵測模組1342可以包含偵測電路42的全部或部分元件。在一範例中,偵測模組1342可以包含一偵測選擇電路,以便選擇連接至哪一條或哪一些偵測電極152。偵測模組1342當中可以包含可變電阻、放大器、積分器、與/或類比數位轉換器。控制模組1310可以根據被驅動的驅動電極151,設定上述可變電阻的阻值、放大器的放大倍率或增益、與/或積分器的積分時間長度、與/或積分器的延遲相位差等控制選項。 In an embodiment, the detection module 1342 may include all or part of the components of the detection circuit 42. In an example, the detection module 1342 can include a detection selection circuit to select which one or which detection electrodes 152 are connected. The detection module 1342 may include a variable resistor, an amplifier, an integrator, and/or an analog digital converter. The control module 1310 can set the resistance of the variable resistor, the amplification factor or gain of the amplifier, the integration time length of the integrator, and/or the delay phase difference of the integrator according to the driven driving electrode 151. Option.
本領域的普通技術人員理解到,在一實施例中,控制模組1310對於驅動模組1341與偵測模組的控制選項,可以選自上述的多個預設參數組,其參數組可以存放在控制模組1310內或是其他記憶體當中。這些控制選項可以是預設的,也可以是動態產生的,本發明並不限定設定參數的時機。 A person skilled in the art understands that, in an embodiment, the control options of the control module 1310 for the driving module 1341 and the detecting module may be selected from the plurality of preset parameter groups described above, and the parameter group may be stored. In the control module 1310 or in other memory. These control options may be preset or dynamically generated, and the present invention does not limit the timing of setting parameters.
申請人特地指出,雖然本發明並不限定是否在收到偵測模組1342的偵測數據之後,比方說上述的壹維度或貳維度感測資訊,再針對這些感測資訊進行調整,以便修正環境或製程對於感測資訊造成的影響。但本發明的主要精神之一,係利用控制模組1310對前端模組1340的各個控制選項進行控制,以便控制前端模組1340先修正電極布局、環境、或製程對於感測資訊造成的影響。 The applicant specifically points out that although the present invention is not limited to whether the detection data of the detection module 1342 is received, for example, the above-mentioned 壹 dimension or 贰 dimension sensing information, the sensing information is adjusted for correction. The impact of an environment or process on sensing information. However, one of the main spirits of the present invention is to control the various control options of the front end module 1340 by using the control module 1310, so as to control the front end module 1340 to first correct the influence of the electrode layout, the environment, or the process on the sensing information.
在前端模組1340進行修正的好處之一,在於盡量避免電極布局、環境、或製程造成的感測資訊的影響超出控制模組1310後續對於感測資訊的修正範圍。 One of the benefits of the correction of the front end module 1340 is that the influence of the sensing information caused by the electrode layout, the environment, or the process is avoided as much as possible beyond the correction range of the sensing information by the control module 1310.
在前端模組1340進行修正的好處之二,在於控制模組1310所需要儲存或控制的參數組較小。比方說,當觸摸屏具有M條第一導電條151與N條第二導電條152時,即便控制模組1310根據被驅動的第一導電條151,一併對驅動信號的電位、驅動時間長度、驅動時機點、偵測電路的可變電阻阻值、放大倍率、偵測時間長度、偵測延遲時間或相位差等七種參數進行調控。在單電極掃描模式當中,控制模組1310最多僅需要控制7M個參數。若是要針對影像或貳維度感測資訊進行後續的修正作業,則控制模組1310需要修正MxN個感測資訊。一般來說,第二導電條的數量均會大於七。更何況,實施例未必會對上述七種參數全部進行調控。所以控制模組1310需要對MxN個感測資訊進行至少一次的數學運算。類似地,在多電極掃描模式當中,也是具有相同的情況。因此,在前端模組1340進行先期修正,可以有效地減少計算資源。 The second benefit of the correction of the front end module 1340 is that the parameter set that the control module 1310 needs to store or control is small. For example, when the touch screen has M first conductive strips 151 and N second conductive strips 152, even if the control module 1310 is driven according to the first conductive strip 151, the potential of the driving signal, the driving time length, Seven parameters such as the driving timing, the variable resistance of the detecting circuit, the magnification, the detection time length, the detection delay time or the phase difference are adjusted. In the single-electrode scanning mode, the control module 1310 only needs to control at most 7M parameters. If the subsequent correction operation is to be performed on the image or the 贰 dimensional sensing information, the control module 1310 needs to correct the MxN sensing information. In general, the number of second conductive strips will be greater than seven. Moreover, the examples do not necessarily regulate all of the above seven parameters. Therefore, the control module 1310 needs to perform at least one mathematical operation on the MxN sensing information. Similarly, in the multi-electrode scanning mode, the same is true. Therefore, the front end module 1340 performs the prior correction, which can effectively reduce the computing resources.
回到圖13,當進行單電極掃描時,經由驅動電極151A的驅 動信號要比經由驅動電極151Z的驅動信號傳輸更遠的距離。若在所有選項或條件都相同的情況都不變的情況下,關於驅動電極151A的感測資訊應當要比關於驅動電極151Z的感測資訊來得差。在一個比較直接易懂的範例中,可以採用調整相位差的方式,使得偵測驅動電極151A的相位差大於偵測驅動電極151Z的相位差,以便讓這兩個感測資訊趨於平準。假設忽略掉各個導電條的材質與製程問題,則可以得到偵測驅動電極151A的相位差>偵測驅動電極151B的相位差>偵測驅動電極151C的相位差>...>偵測驅動電極151Z的相位差的結果。這些相位差可能具有線性的關係。因此,控制模組1310只要知道偵測驅動電極151A的相位差與線性梯度(斜率),就可以計算出偵測各個驅動電極151的相位差。 Returning to Fig. 13, when performing single-electrode scanning, driving through the driving electrode 151A The moving signal is transmitted a greater distance than the driving signal via the driving electrode 151Z. If all the options or conditions are the same, the sensing information about the driving electrode 151A should be worse than the sensing information about the driving electrode 151Z. In a relatively straightforward example, the phase difference can be adjusted such that the phase difference of the detecting driving electrode 151A is greater than the phase difference of the detecting driving electrode 151Z, so that the two sensing information are leveled. Assuming that the material and process problems of the respective conductive strips are neglected, the phase difference of the detected driving electrodes 151A can be obtained> the phase difference of the detecting driving electrodes 151B> the phase difference of the detecting driving electrodes 151C>...> detecting the driving electrodes The result of the phase difference of 151Z. These phase differences may have a linear relationship. Therefore, the control module 1310 can calculate the phase difference of each of the driving electrodes 151 by knowing the phase difference and the linear gradient (slope) of the detecting driving electrode 151A.
然而,也可以採用調整其他參數的方式,來讓這兩個感測資訊趨於平整。比方說,可以令驅動電極151A的驅動電位大於驅動電極151Z的驅動電位,以便讓這兩個感測資訊趨於平整。同樣地,假設忽略掉各個導電條的材質與製程問題,則可以得到驅動電極151A的驅動電位>驅動電極151B的驅動電位>驅動電極151C的驅動電位>...>驅動電極151Z的驅動電位。這些驅動電位可能具有線性的關係。因此,控制模組1310只要知道驅動電極151A的驅動電位與線性梯度(斜率),就可以計算出偵測各個驅動電極151的驅動電位。 However, it is also possible to adjust the other parameters to make the two sensing information level. For example, the driving potential of the driving electrode 151A can be made larger than the driving potential of the driving electrode 151Z so that the two sensing information tends to be flat. Similarly, assuming that the material and process problems of the respective conductive strips are ignored, the driving potential of the driving electrode 151A > the driving potential of the driving electrode 151B > the driving potential of the driving electrode 151C > ... > the driving potential of the driving electrode 151Z can be obtained. These drive potentials may have a linear relationship. Therefore, the control module 1310 can calculate the driving potential of each driving electrode 151 by knowing the driving potential and the linear gradient (slope) of the driving electrode 151A.
同樣地,本領域的普通技術人員可以理解到,至少可以包含但不限於針對驅動信號的電位、驅動時間長度、驅動時機點、偵測電路的可變電阻阻值、放大倍率、偵測時間長度、偵測延遲時間或相位差等七種參數進行調控,使得感測資訊可以趨於平準。假設由於製程的影響,某一 條驅動電極151的阻抗值特別大,或者說與相鄰的驅動電極151的電性不呈現線性關係時,控制模組1310可以特別針對該條或該組驅動電極151儲存其參數。比方說,第一側與第二側的驅動電極151A與151Z,其形狀或面積可能與其他的驅動電極151不同,不能與相鄰的驅動電極151之電性呈現線性關係。所以控制模組1310可以特別針對驅動電極151A與151Z儲存其參數。 Similarly, those skilled in the art can understand that at least, but not limited to, the potential of the driving signal, the driving time length, the driving timing, the variable resistance of the detecting circuit, the magnification, and the detection time length. Seven parameters such as detection delay time or phase difference are adjusted, so that the sensing information can be leveled. Assume that due to the influence of the process, a certain When the impedance value of the strip drive electrode 151 is particularly large, or when the electrical properties of the adjacent drive electrodes 151 are not linear, the control module 1310 may store its parameters specifically for the strip or the set of drive electrodes 151. For example, the drive electrodes 151A and 151Z of the first side and the second side may have different shapes or areas from the other drive electrodes 151 and may not have a linear relationship with the electrical properties of the adjacent drive electrodes 151. Therefore, the control module 1310 can store its parameters specifically for the drive electrodes 151A and 151Z.
請參照圖14A,其為根據本發明一實施例的觸摸屏的信號量測方法,可以參考圖4或圖13的實施例。觸摸屏包含平行排列的多條驅動導電條與平行排列的多條偵測導電條組成的多條導電條。所述的驅動導電條與所述的偵測導電條交疊於多個交疊區。該信號量測方法包含:步驟1410,依序提供一第一驅動信號與一第二驅動信號給一第一組該驅動導電條與一第二組該驅動導電條;以及步驟1420,依序偵測由該至少一偵測導電條的信號分別產生相應於該第一驅動信號與該第二驅動信號的一第一信號與一第二信號,其中,所述第一驅動信號的驅動時間不同於所述第二驅動信號的驅動時間。 Please refer to FIG. 14A, which is a signal measurement method of a touch screen according to an embodiment of the present invention. Reference may be made to the embodiment of FIG. 4 or FIG. The touch screen comprises a plurality of conductive strips arranged in parallel and a plurality of strips of conductive strips arranged in parallel. The driving conductive strip overlaps the detecting conductive strip at a plurality of overlapping regions. The signal measurement method includes: step 1410, sequentially providing a first driving signal and a second driving signal to a first group of the driving conductive strips and a second group of the driving conductive strips; and step 1420, sequentially detecting Measuring, by the at least one detecting conductive strip, a first signal and a second signal corresponding to the first driving signal and the second driving signal, wherein the driving time of the first driving signal is different from The driving time of the second driving signal.
請參考圖14B,其為根據本發明一實施例的觸摸屏的信號量測方法,可以參考圖4或圖13的實施例。觸摸屏包含平行排列的多條驅動導電條與平行排列的多條偵測導電條組成的多條導電條。所述的驅動導電條與所述的偵測導電條交疊於多個交疊區。該信號量測方法包含:在步驟1430中,依序於一第一驅動時間與一第二驅動時間,分別提供一第一驅動信號與一第二驅動信號給相鄰的一第一組驅動導電條與一第二組驅動導電條。在步驟1440中,依序於一第三驅動時間與一第四驅動時間,分別提供一第三驅動信號與一第四驅動信號給相鄰的一第三組驅動導電條與一第四組驅 動導電條。接著在步驟1450中,依序偵測由該至少一偵測導電條的信號分別產生相應於該第一驅動信號、該第二驅動信號、該第三驅動信號與該第四驅動信號的一第一信號、一第二信號、一第三信號與一第四信號,其中該第二驅動時間與該第一驅動時間之間的一第一時間差不同於該第四驅動時間與第三驅動時間之間的一第二時間差。 Please refer to FIG. 14B, which is a signal measurement method of a touch screen according to an embodiment of the present invention. Reference may be made to the embodiment of FIG. 4 or FIG. The touch screen comprises a plurality of conductive strips arranged in parallel and a plurality of strips of conductive strips arranged in parallel. The driving conductive strip overlaps the detecting conductive strip at a plurality of overlapping regions. The signal measurement method includes: in step 1430, sequentially providing a first driving signal and a second driving signal to an adjacent one of the first group of driving conductive devices according to a first driving time and a second driving time. The strip and a second set of drive strips. In step 1440, a third driving signal and a fourth driving signal are respectively provided to the adjacent third group of driving strips and a fourth group of driving, respectively, in a third driving time and a fourth driving time. Dynamic conductive strips. Then, in step 1450, the signals of the at least one detecting conductive strip are sequentially detected to generate a corresponding one of the first driving signal, the second driving signal, the third driving signal, and the fourth driving signal. a signal, a second signal, a third signal and a fourth signal, wherein a first time difference between the second driving time and the first driving time is different from the fourth driving time and the third driving time A second time difference between the two.
請參考圖14C,其為根據本發明一實施例的觸摸屏的信號量測方法,可以參考圖4、圖13以及圖14B的實施例。觸摸屏包含平行排列的多條驅動導電條與平行排列的多條偵測導電條組成的多條導電條。所述的驅動導電條與所述的偵測導電條交疊於多個交疊區。該信號量測方法包含:在步驟1460中,依序於一第一驅動時間、一第二驅動時間與一第三驅動時間,分別提供一第一驅動信號、一第二驅動信號與一第三驅動信號給相鄰的一第一組驅動導電條、一第二組驅動導電條與一第三組驅動導電條。在步驟1470中,依序偵測由該至少一偵測導電條的信號分別產生相應於該第一驅動信號、該第二驅動信號與該第三驅動信號的一第一信號、一第二信號與一第三信號,其中該第二驅動時間與該第一驅動時間之間的一第一時間差不同於該第三驅動時間與第四驅動時間之間的一第二時間差。 Please refer to FIG. 14C, which is a signal measurement method of the touch screen according to an embodiment of the present invention. Reference may be made to the embodiments of FIG. 4, FIG. 13, and FIG. 14B. The touch screen comprises a plurality of conductive strips arranged in parallel and a plurality of strips of conductive strips arranged in parallel. The driving conductive strip overlaps the detecting conductive strip at a plurality of overlapping regions. The signal measurement method includes: in step 1460, a first driving signal, a second driving time, and a third driving time are sequentially provided, respectively, a first driving signal, a second driving signal, and a third The driving signal is sent to an adjacent first set of driving strips, a second set of driving strips and a third set of driving strips. In step 1470, the signals of the at least one detecting conductive strip are sequentially detected to generate a first signal and a second signal corresponding to the first driving signal, the second driving signal, and the third driving signal, respectively. And a third signal, wherein a first time difference between the second driving time and the first driving time is different from a second time difference between the third driving time and the fourth driving time.
請參考圖14D,其為根據本發明一實施例的觸摸屏的信號量測方法,可以參考圖4、圖13、圖14B與圖14C的實施例。觸摸屏包含平行排列的多條驅動導電條與平行排列的多條偵測導電條組成的多條導電條。所述的驅動導電條與所述的偵測導電條交疊於多個交疊區。該信號量測方法包含:在步驟1480中,依序於一第一驅動時機點與一第二驅動時機點提供一第一驅動信號與一第二驅動信號給一第一組驅動導電條與一第二組驅動 導電條。以及在步驟1490中,依據偵測由該至少一偵測導電條的信號分別產生相應於該第一驅動信號與該第二驅動信號的一第一信號與一第二信號,其中所述第一驅動時機點不同於所述第二驅動時機點。 Please refer to FIG. 14D, which is a signal measurement method of a touch screen according to an embodiment of the present invention. Reference may be made to the embodiments of FIG. 4, FIG. 13, FIG. 14B, and FIG. 14C. The touch screen comprises a plurality of conductive strips arranged in parallel and a plurality of strips of conductive strips arranged in parallel. The driving conductive strip overlaps the detecting conductive strip at a plurality of overlapping regions. The signal measurement method includes: in step 1480, sequentially providing a first driving signal and a second driving signal to a first driving strip and a second driving timing point and a second driving timing point. Second group drive Conductive strip. And in step 1490, a first signal and a second signal corresponding to the first driving signal and the second driving signal are respectively generated according to the signal detected by the at least one detecting conductive strip, wherein the first The driving timing point is different from the second driving timing point.
在本發明當中,上述的驅動時機點可以指前後兩次驅動信號提供的起始時間點的時間差,也可以是相對於一固定時脈信號的時間差。 In the present invention, the above-mentioned driving timing point may refer to a time difference of a starting time point provided by two driving signals before and after, or may be a time difference with respect to a fixed clock signal.
在本申請的一實施例中,觸摸屏可以包含平行於第一軸向的多條第一電極,平行於第二軸向的多條第二電極,以及多條虛假(dummy)電極。在一範例中,觸摸屏的控制裝置可以利用上述的多條第一電極與多條第二電極執行自電容偵測來偵測靠近或接觸(簡稱近接)觸摸屏的近接物件。在另一範例中,觸摸屏的控制裝置可以利用上述的多條第一電極與多條第二電極執行互電容偵測來偵測近接物件。 In an embodiment of the present application, the touch screen may include a plurality of first electrodes parallel to the first axial direction, a plurality of second electrodes parallel to the second axial direction, and a plurality of dummy electrodes. In an example, the control device of the touch screen can perform self-capacitance detection by using the plurality of first electrodes and the plurality of second electrodes to detect a proximity object that is close to or in contact with the touch screen (referred to as a proximity). In another example, the control device of the touch screen can perform mutual capacitance detection by using the plurality of first electrodes and the plurality of second electrodes to detect the proximity object.
在傳統技術當中,每條第一電極之間的間距都是相同的,每條第二電極之間的間距也都是一樣的。一般說來,現有設計的間距大約都落在4mm左右或更小的距離。由於觸摸屏的尺寸越來越大,因此需要越來越多條的第一電極與第二電極。當電極的數量增多時,在觸摸屏的邊緣就需要更多的繞線空間,觸摸屏的控制裝置也需要越來越多的腳位或接點來連接。然而,繞線空間與積體電路的腳位是有限的。因此,本申請藉由設計出不同間距的電極,使得電極數量減少,藉以節省上述的繞線空間與積體電路的腳位。 In the conventional technique, the spacing between each of the first electrodes is the same, and the spacing between each of the second electrodes is also the same. In general, the pitch of existing designs is about a distance of about 4 mm or less. Since the size of the touch screen is getting larger, more and more first electrodes and second electrodes are required. As the number of electrodes increases, more winding space is required at the edge of the touch screen, and the touch screen control device also requires more and more pins or contacts to connect. However, the winding space and the pin of the integrated circuit are limited. Therefore, the present application reduces the number of electrodes by designing electrodes of different pitches, thereby saving the above-mentioned winding space and the position of the integrated circuit.
請參考圖15所示,其為根據本申請一實施例的觸摸屏之電極結構的一示意圖。在圖15的上半部(a)當中,包含了一觸摸屏1500以及觸摸屏1500所包含的多條第一電極1510。在圖15當中,這些第一電極的標號從左至 右分別為1510a、1510b、…、與1510k。在其他實施例當中,可以具有其他數量的第一電極1510。在一實施例中,這些第一電極1510均平行於第一軸向,也就是圖15的垂直軸。儘管在圖15上的第一電極1510只是單純的線段,但本領域的普通技術人員可以了解到,第一電極1510的形狀可以有多種變形,只不過其主軸線係沿著第一軸向。要注意的是,在圖15當中,沒有示出上述的平行於第二軸向的多條第二電極與虛假電極。 Please refer to FIG. 15 , which is a schematic diagram of an electrode structure of a touch screen according to an embodiment of the present application. In the upper half (a) of FIG. 15, a touch screen 1500 and a plurality of first electrodes 1510 included in the touch screen 1500 are included. In Figure 15, the labels of these first electrodes are from left to The right is 1510a, 1510b, ..., and 1510k respectively. In other embodiments, there may be other numbers of first electrodes 1510. In an embodiment, the first electrodes 1510 are all parallel to the first axis, that is, the vertical axis of FIG. Although the first electrode 1510 on FIG. 15 is simply a line segment, one of ordinary skill in the art will appreciate that the shape of the first electrode 1510 can be varied in many ways, except that its major axis is along the first axis. It is to be noted that, in Fig. 15, the above-described plurality of second electrodes and dummy electrodes parallel to the second axial direction are not shown.
可以注意到在圖15的下半部(b)當中,特別將這些第一電極1510之間的距離劃分出來,稱之為間距1590。間距1590ab為第一電極1510a與1510b之間的距離,間距1590bc為第一電極1510b與1510c之間的距離,以此類推,如下表所示。 It can be noted that in the lower half (b) of Fig. 15, the distance between these first electrodes 1510 is specifically divided, which is referred to as a pitch 1590. The pitch 1590ab is the distance between the first electrodes 1510a and 1510b, and the pitch 1590bc is the distance between the first electrodes 1510b and 1510c, and so on, as shown in the following table.
在圖15所示的實施例當中,越靠近觸摸屏1500中間的間距越大,越靠近觸摸屏1500邊緣的間距越小。在觸摸屏1500中間的第一電極1510之間的間距1590可以達到一最大值,例如間距1590ef就等於間距1590fg,而間距1590ef與1590fg為所有間距1590當中最大的。換言之,在多個間距1590當中,有複數個間距1590的數值為最大值。然而,在本發明的另一實施例中,可以只有一個間距1590的數值為最大值。 In the embodiment shown in FIG. 15, the closer to the middle of the touch screen 1500, the smaller the pitch closer to the edge of the touch screen 1500. The pitch 1590 between the first electrodes 1510 in the middle of the touch screen 1500 can reach a maximum value, for example, the pitch 1590ef is equal to the pitch 1590fg, and the pitches 1590ef and 1590fg are the largest among all the pitches 1590. In other words, among the plurality of pitches 1590, the value of the plurality of pitches 1590 is the maximum value. However, in another embodiment of the invention, only one of the values of the spacing 1590 may be a maximum.
在一實施例中,由於沒有任何第一電極1510位於觸摸屏1500的中間,所以具有最大值的間距1590的其中之一位於觸摸屏1500的中間。在另一實施例中,若有某一第一電極1510位於觸摸屏1500的中間線,則具有最 大值的間距1590的其中之一位於該中間線之第一電極1510的兩側,如第一電極1510f。 In an embodiment, since none of the first electrodes 1510 is located in the middle of the touch screen 1500, one of the pitches 1590 having the largest value is located in the middle of the touch screen 1500. In another embodiment, if a certain first electrode 1510 is located in the middle line of the touch screen 1500, it has the most One of the large-valued pitches 1590 is located on both sides of the first electrode 1510 of the intermediate line, such as the first electrode 1510f.
在圖15所示的實施例當中,這些間距1590的分布是左右對稱的,以觸摸屏1500的中間線或第一電極1510f為對稱軸。間距1590ef與間距1590gh為對應的間距1590,兩者的長度皆為六個單位。由此可見,圖15的間距1590之間形成一個對稱的結構。然而,本申請並不限定各個間距1590形成左右對稱的結構,也不限定具有最大值的間距1590必須位於觸摸屏1500的中間或中間附近。 In the embodiment shown in FIG. 15, the distribution of the pitches 1590 is bilaterally symmetric, with the intermediate line of the touch screen 1500 or the first electrode 1510f being the axis of symmetry. The spacing 1590ef and the spacing 1590gh are corresponding spacings 1590, both of which are six units in length. Thus, a symmetrical structure is formed between the pitches 1590 of FIG. However, the present application does not limit each of the pitches 1590 to form a bilaterally symmetric structure, nor does it limit that the pitch 1590 having a maximum value must be located in the middle or near the middle of the touch screen 1500.
本申請的特徵之一,在於某第一間距與某第二間距不同。在一實施例中,某第三間距與第一間距及第二間距皆不同。在一實施例中,第一間距與第二間距為相鄰的間距。在另一實施例中,第一間距與第二間距為不相鄰的間距。在一實施例中,當第一間距大於第二間距時,第二間距較接近觸摸屏的中間線。 One of the features of the present application is that a certain first pitch is different from a certain second pitch. In an embodiment, a third pitch is different from the first pitch and the second pitch. In an embodiment, the first pitch and the second pitch are adjacent pitches. In another embodiment, the first pitch and the second pitch are non-adjacent pitches. In an embodiment, when the first pitch is greater than the second pitch, the second pitch is closer to the middle line of the touch screen.
相鄰的間距1590的差值稱為間距斜率,為了避免混淆起見,可以將間距斜率定義為相鄰間距的較大者與較小者的比值,稱之為上升斜率。或是定義為相鄰間距的較小者與較大者的比值,稱之為下降斜率。在上表的最右欄為相鄰間距的上升及下降斜率。 The difference between the adjacent pitches 1590 is called the pitch slope. To avoid confusion, the pitch slope can be defined as the ratio of the larger and smaller of the adjacent pitches, called the rising slope. Or defined as the ratio of the smaller of the adjacent spacing to the larger one, called the falling slope. In the rightmost column of the above table is the rising and falling slope of the adjacent spacing.
由於在圖15所示的實施例當中,這些間距1590的分布是左右對稱的,所以間距斜率也是對稱的。比方說,以觸摸屏1500的中間線或第一電極1510f為對稱軸,間距1590ab與1590bc之間的斜率等於間距1590jk與1590kl之間的斜率。在此實施例中,越接近觸摸屏1500中間的上升斜率越低且下降斜率越高,越遠離觸摸屏1500中間的上升斜率越高且下降斜率越低。 然而,本申請並不限定各個間距斜率形成左右對稱的結構,也不限定具有100%的間距上升或下降斜率必須位於觸摸屏的中間或中間附近。 Since the distribution of these pitches 1590 is bilaterally symmetric in the embodiment shown in Fig. 15, the pitch slope is also symmetrical. For example, with the middle line of the touch screen 1500 or the first electrode 1510f as the axis of symmetry, the slope between the pitches 1590ab and 1590bc is equal to the slope between the pitches 1590jk and 1590kl. In this embodiment, the closer the rising slope is to the middle of the touch screen 1500 and the higher the falling slope, the higher the rising slope from the middle of the touch screen 1500 and the lower the falling slope. However, the present application does not limit each of the pitch slopes to form a bilaterally symmetric structure, nor does it limit that the 100% pitch rise or fall slope must be located in the middle or near the middle of the touch screen.
本申請的特徵之一,在於某第一間距斜率與某第二間距斜率不同。在一實施例中,某第三間距斜率與第一間距斜率及第二間距斜率皆不同。在一實施例中,第一間距斜率與第二間距斜率為相鄰的間距斜率。在另一實施例中,第一間距斜率與第二間距斜率為不相鄰的間距斜率。在一實施例中,當第一間距上升斜率大於第二間距上升斜率時,第二間距上升斜率所對應的間距較接近觸摸屏的中間線。當第一間距下降斜率大於第二間距下降斜率時,第一間距所對應的間距較較接近觸摸屏的中間線。 One of the features of the present application is that a certain first pitch slope is different from a certain second pitch slope. In an embodiment, a certain third pitch slope is different from the first pitch slope and the second pitch slope. In an embodiment, the first pitch slope and the second pitch slope are adjacent pitch slopes. In another embodiment, the first pitch slope and the second pitch slope are non-adjacent pitch slopes. In an embodiment, when the first pitch rising slope is greater than the second pitch rising slope, the second pitch rising slope corresponds to a pitch closer to the middle line of the touch screen. When the first pitch falling slope is greater than the second pitch falling slope, the pitch corresponding to the first pitch is closer to the middle line of the touch screen.
為了減少電極的數量,減少相應的繞線空間與積體電路的腳位。在本申請的一實施例當中,可以將電極之間間距拉大到4mm以上,比方說大於4.5mm,以逐漸達到7mm~8mm左右的最大間距。上述的數字只是舉例,本申請並不限定於上述的間距設計。 In order to reduce the number of electrodes, the corresponding winding space and the pin position of the integrated circuit are reduced. In an embodiment of the present application, the distance between the electrodes can be increased to 4 mm or more, for example, greater than 4.5 mm, to gradually reach a maximum pitch of about 7 mm to 8 mm. The above figures are merely examples, and the present application is not limited to the above-described pitch design.
如果在觸摸屏的邊緣仍然維持這麼大的間距,若物件近接到觸摸屏的邊緣時,最靠近邊緣的電極之感應量將可能減到和雜訊值差不多,很可能會被濾除。又由於感應量相當小,所以近接物件的位置相當難以計算。因此,本申請提出了上述的解決方案,令靠近觸摸屏邊緣的電極逐漸密集起來,所以能夠有較多的電極能夠感應到近接物件,計算出的位置可以較為準確。此外,本申請還提出了直接將電極放在觸摸屏邊緣的設計,將於稍後說明。 If such a large distance is maintained at the edge of the touch screen, if the object is near the edge of the touch screen, the amount of the electrode closest to the edge may be reduced to be similar to the noise value and is likely to be filtered out. Since the amount of induction is relatively small, the position of the close object is quite difficult to calculate. Therefore, the present application proposes the above solution, so that the electrodes near the edge of the touch screen are gradually densed, so that more electrodes can sense the proximity objects, and the calculated position can be more accurate. In addition, the present application also proposes a design that directly places the electrodes on the edge of the touch screen, which will be described later.
請參考圖16所示,其為根據本申請一實施例的觸摸屏之電極結構的一示意圖。和圖15所示的實施例相同,圖16並沒有示出平行於第二軸 向的多條第二電極與虛假電極,只示出平行於第一軸向的多條第一電極1610。在此實施例中,除了最接近邊緣的兩條第一電極1610a與1610z之外,其餘的第一電極1610之間的間距都是相同的。在這種設計當中,可以利用第一電極1610a與1610z負責加強偵測觸摸屏1600邊緣的近接物件,也可以盡可能地減少第一電極1610的數量。 Please refer to FIG. 16 , which is a schematic diagram of an electrode structure of a touch screen according to an embodiment of the present application. The same as the embodiment shown in Fig. 15, Fig. 16 does not show parallel to the second axis. The plurality of second electrodes and the dummy electrodes are shown, and only a plurality of first electrodes 1610 are shown parallel to the first axial direction. In this embodiment, the spacing between the remaining first electrodes 1610 is the same except for the two first electrodes 1610a and 1610z closest to the edge. In this design, the first electrodes 1610a and 1610z can be utilized to enhance the proximity of the object detecting the edge of the touch screen 1600, and the number of the first electrodes 1610 can be reduced as much as possible.
在某一實施例當中,第一電極1610a與1610z恰好位於隔鄰之第一電極1610與觸摸屏1600邊緣之間距的中間。在一實施例中,隔鄰之第一電極1610與觸摸屏1600邊緣之間距,等於除了第一電極1610a與1610z之外所有第一電極1610之間的間距。 In one embodiment, the first electrodes 1610a and 1610z are located just in the middle of the distance between the adjacent first electrode 1610 and the edge of the touch screen 1600. In one embodiment, the distance between the adjacent first electrode 1610 and the edge of the touch screen 1600 is equal to the spacing between all of the first electrodes 1610 except the first electrodes 1610a and 1610z.
在進行互電容偵測時,可以根據每條第一電極1610的位置,以及其所接收到的感應量,計算近接物件在觸摸屏1600上的位置。當某第一電極1610的形狀設計與其他第一電極1610的形狀設計相同的時候,就無須修正某第一電極1610的感應量。比方說,在圖16所示的實施例當中,第一電極1610a與其他的第一電極1610的形狀都是相同的長條型,其面積也是相同時,則無須修正第一電極1610a的感應量。然而,當某第一電極的形狀設計與其他第一電極的不同時,就需要修正其感應量。 When performing mutual capacitance detection, the position of the proximity object on the touch screen 1600 can be calculated according to the position of each of the first electrodes 1610 and the amount of sensing received. When the shape design of a certain first electrode 1610 is the same as that of the other first electrodes 1610, it is not necessary to correct the sensing amount of a certain first electrode 1610. For example, in the embodiment shown in FIG. 16, the shape of the first electrode 1610a and the other first electrodes 1610 are the same strip shape, and when the area is the same, there is no need to correct the amount of the first electrode 1610a. . However, when the shape design of a certain first electrode is different from that of the other first electrodes, it is necessary to correct the amount of inductance.
請參考圖17所示,其為根據本申請一實施例的觸摸屏之部分電極結構的一示意圖。和圖15所示的實施例相同,圖17並沒有示出平行於第二軸向的多條第二電極與虛假電極,只示出平行於第一軸向(圖中的垂直軸向)的多條第一電極1710。圖17所示實施例包含四條第一電極1710。位於最左邊的是第一電極1710a,其在第二軸向(圖中的水平軸向)的位置為0,第一電極1710a包含多個三角形導電片1712。由於第一電極1710a位於觸摸屏的左 側邊緣,所以導電片1712位於第一電極1710a的右側,向右延伸約2.5單位長。 Please refer to FIG. 17 , which is a schematic diagram of a partial electrode structure of a touch screen according to an embodiment of the present application. The same as the embodiment shown in FIG. 15, FIG. 17 does not show a plurality of second electrodes and dummy electrodes parallel to the second axial direction, and only shows parallel to the first axial direction (vertical axial direction in the drawing). A plurality of first electrodes 1710. The embodiment shown in Figure 17 includes four first electrodes 1710. Located at the far left is a first electrode 1710a whose position in the second axial direction (horizontal axis in the drawing) is 0, and the first electrode 1710a includes a plurality of triangular conductive sheets 1712. Since the first electrode 1710a is located on the left side of the touch screen The side edge, so the conductive sheet 1712 is located on the right side of the first electrode 1710a and extends to the right by about 2.5 units.
第一電極1710b位於第二軸向的位置為6,其包含多個四邊形導電片,每個四邊形導電片由左右兩個三角形導電片1722與1724所構成。左側的三角形導電片1722與三角形導電片1712形狀相同,但方向相對,由第一電極1710b向左延伸約2.5單位長。右側的三角形導電片1724與三角形導電片1732形狀相同,但方向相對,由第一電極1710b向右延伸約4.5單位長。 The first electrode 1710b is located at a position 6 in the second axial direction and includes a plurality of quadrilateral conductive sheets, each of which is composed of two left and right triangular conductive sheets 1722 and 1724. The triangular conductive sheet 1722 on the left side has the same shape as the triangular conductive sheet 1712, but is opposed to each other and extends leftward by the first electrode 1710b by about 2.5 units. The triangular conductive sheet 1724 on the right side has the same shape as the triangular conductive sheet 1732, but in the opposite direction, extending from the first electrode 1710b to the right by about 4.5 units.
從圖17當中可以見到三種型態的第一電極1710。第一電極1710a屬於第一種型態,其位於觸摸屏的邊緣,其電極形狀只能偏向一側。第一電極1710b屬於第二種型態,其位於觸摸屏的中間,但由於其左右兩邊的間距不同,所以其電極形狀是不對稱的。第一電極1710c則屬於第三種型態,其位於觸摸屏的中間,而且由於其兩邊的間距相同,所以其電極形狀是對稱的。 Three types of first electrodes 1710 can be seen in FIG. The first electrode 1710a belongs to the first type, which is located at the edge of the touch screen, and its electrode shape can only be biased to one side. The first electrode 1710b belongs to the second type, which is located in the middle of the touch screen, but its electrode shape is asymmetrical due to the difference in the pitch between the left and right sides. The first electrode 1710c belongs to the third type, which is located in the middle of the touch screen, and because the spacing between the two sides is the same, the shape of the electrodes is symmetrical.
假定有相同的近接物件,分別近接到不同的位置1702、1704、與1706時,由於各個位置所在的第一電極1710之電極形狀不同,將導致其感應量不同。舉例而言,在第三圖所示的實施例當中,第一電極1710a、1710b、與1710c相關的導電片面積之比例為2.5比7比9。當近接物件在位置1702時,則第一電極1710a的導電片1712之面積,將少於近接物件在位置1704時,第一電極1710b的導電片1722與1724之面積的總和。除此之外,當近接物件在位置1702時,第一電極1710c可能已經無法偵測到其感應量。然而,當近接物件在位置1704時,第一電極1710a與1701c還可以偵測到感應量。 Assuming that the same proximity objects are respectively connected to different positions 1702, 1704, and 1706, the inductance of the first electrode 1710 at each position is different, which causes the amount of inductance to be different. For example, in the embodiment shown in the third figure, the ratio of the area of the conductive sheets associated with the first electrodes 1710a, 1710b and 1710c is 2.5 to 7 to 9. When the proximity object is at position 1702, the area of the conductive strip 1712 of the first electrode 1710a will be less than the sum of the areas of the conductive strips 1722 and 1724 of the first electrode 1710b when the proximity object is at position 1704. In addition, when the proximity object is at position 1702, the first electrode 1710c may have been unable to detect its amount of induction. However, when the proximity object is at position 1704, the first electrodes 1710a and 1701c can also detect the amount of inductance.
本領域的普通技術人員可以理解到,圖17所示的實施例係使用三角導電片作為電極的形狀,然而本申請並不限於此種電極形狀。舉例 而言,還可以使用六角形、八角形、N邊形、方螺旋狀、圓螺旋狀等等電極形狀。 It will be understood by those skilled in the art that the embodiment shown in Fig. 17 uses a triangular conductive sheet as the shape of the electrode, but the present application is not limited to such an electrode shape. Example In other words, an electrode shape such as a hexagonal shape, an octagonal shape, an N-sided shape, a square spiral shape, a circular spiral shape or the like can be used.
與圖15和圖16所示的實施例相比,由於圖17的實施例當中多了位於觸摸屏邊緣的第一電極1710a。比起圖16所示的第一電極1610a與1610z,第一電極1710a更加接近觸摸屏邊緣,因此對於觸摸屏邊緣的近接物件有更好的偵測效果。 Compared with the embodiment shown in Figs. 15 and 16, the first electrode 1710a located at the edge of the touch screen is added in the embodiment of Fig. 17. The first electrode 1710a is closer to the edge of the touch screen than the first electrodes 1610a and 1610z shown in FIG. 16, and thus has a better detection effect for the proximity object at the edge of the touch screen.
先前提過,由於第一類型態與第二類型態的第一電極1710a與1710b之電極形狀設計不同,因此需要針對此兩類型態電極的感應量進行修正。其修正的步驟可以將感應量乘以一個係數,而該係數可以是查表得到,也可以是根據某一函數計算得到。在一實施例中,該函數可以是一次函數,也可以是二次函數。在一實施例中,該係數可以和導電片的面積相關,也可以和相鄰之電極的導電片面積相關,也和相鄰電極之間的間距相關。 It is premature that since the electrode shapes of the first electrodes 1710a and 1710b of the first type and the second type are different, it is necessary to correct the amount of induction of the two types of electrodes. The modified step can multiply the amount of inductance by a coefficient, which can be obtained by looking up the table or calculated according to a function. In an embodiment, the function may be a linear function or a quadratic function. In one embodiment, the coefficient may be related to the area of the conductive sheet, or to the area of the conductive sheet of the adjacent electrode, and also to the spacing between adjacent electrodes.
除了可以在數位處理的部分針對感應量乘以係數進行修正之外,還可以在類比前端(Analog Front End,AFE)電路部分先進行修正。本申請可以包含在數位前端進行修正,也可以包含在數位處理的步驟進行修正,也可以在兩者都進行修正的步驟。只要這些修正的步驟與/或係數是和相鄰電極之間的不同間距相關、和不同間距帶來的不同感應面積相關、或是和不同的感應片面積相關,皆落在本申請的範圍之中。 In addition to correcting the amount of inductance multiplied by the coefficient in the digital processing section, it can be corrected first in the analog front end (AFE) circuit section. The present application may include correction at the digit front end, or may be performed in the step of digital processing, or may be performed in both. As long as the steps and/or coefficients of the correction are related to different spacings between adjacent electrodes, to different sensing areas caused by different spacings, or to different sensing area, it falls within the scope of the present application. in.
在一實施例中,採用互電容偵測時,會依序提供驅動信號至平行於第二軸向的第二電極,接著量測各條第一電極的感應量,以便偵測近接物件。在連接各個第二電極驅動部分,類比前端電路可以控制驅動信 號的驅動時間長短與驅動信號的電壓。在連接各個第一電極的部分,類比前端電路可以提供可變電阻、放大器、與積分器來量測上述的感應量。因此,類比前端電路可以控制可變電阻的電阻值、放大器的增益值、積分器的積分時機(或者稱之為與驅動信號之間的相位差或時間差)、以及積分時間長短等係數。 In an embodiment, when mutual capacitance detection is used, the driving signal is sequentially supplied to the second electrode parallel to the second axis, and then the sensing amount of each of the first electrodes is measured to detect the proximity object. In the connection of each of the second electrode driving portions, the analog front end circuit can control the driving signal The length of the drive time and the voltage of the drive signal. In the portion connecting the respective first electrodes, the analog front end circuit can provide a variable resistor, an amplifier, and an integrator to measure the above-mentioned amount of inductance. Therefore, the analog front-end circuit can control the resistance value of the variable resistor, the gain value of the amplifier, the integration timing of the integrator (or the phase difference or time difference from the drive signal), and the length of the integration time.
因此,根據每一條被提供驅動信號的第二電極,類比前端電路可以調整上述參數的其中之一或是其任意組合,用於調整感應量。在一實施例中,可以根據相關導電片的面積,將第一電極1710a的放大器增益係數調整為第一電極1710c的放大器增益係數的9/2.5倍,將第一電極1710b的放大器增益係數調整為第一電極1710c的放大器增益係數的9/7倍。在另一實施例中,還可以將第一電極1710b的可變電阻之阻值調整為第一電極1710a的可變電阻組值的7/2.5倍,將第一電極1710b的可變電阻之阻值調整為第一電極1710a的可變電阻組值的9/2.5倍。 Therefore, according to each of the second electrodes to which the driving signal is supplied, the analog front end circuit can adjust one of the above parameters or any combination thereof for adjusting the sensing amount. In an embodiment, the amplifier gain coefficient of the first electrode 1710a can be adjusted to be 9/2.5 times the amplifier gain coefficient of the first electrode 1710c according to the area of the associated conductive sheet, and the amplifier gain coefficient of the first electrode 1710b can be adjusted to The first electrode 1710c has an amplifier gain coefficient of 9/7 times. In another embodiment, the resistance of the variable resistance of the first electrode 1710b can be adjusted to be 7/2.5 times of the variable resistance group value of the first electrode 1710a, and the resistance of the variable resistance of the first electrode 1710b is blocked. The value is adjusted to be 9/2.5 times the value of the variable resistance group of the first electrode 1710a.
在互電容偵測近接物件的時候,可以利用到相鄰第一電極110之偵測值的差值與/或雙差值(即兩個差值的差值),以減去雜訊的干擾,再進行後續的判斷。上述的差值與/或雙差值係針對調整後的值進行相減的動作。同樣地,在一實施例中,可以直接在類比前端電路進行調整,也可以直接在類比前端電路進行差值與/或雙差值的運算。當然,也可以留待數位處理的部分,才進行調整與差值與/或刷差值的運算。 When the mutual capacitance detects the proximity object, the difference between the detected values of the adjacent first electrodes 110 and/or the double difference (ie, the difference between the two differences) may be utilized to reduce the interference of the noise. Then make subsequent judgments. The above difference and/or double difference is an action of subtracting the adjusted value. Similarly, in an embodiment, the adjustment can be made directly in the analog front end circuit, or the difference and/or double difference operation can be performed directly in the analog front end circuit. Of course, it is also possible to leave the portion of the digital processing before performing the adjustment and the difference and/or the difference between the brushes.
在前述的實施例當中,非為100%的多個間距斜率是不同的。在一實施例中,可以為了方便設計或計算起見,將非為100%的間距斜率設定在某一範圍之內。舉例而言,可以將間距斜率設為5%±1%。如此一 來,可以簡化上述的調整過程。如果間距斜率設得較小,或者可以接受較不精準的近接物件之位置時,甚至於可以將間距斜率忽略不計。 In the foregoing embodiments, the plurality of pitch slopes other than 100% are different. In an embodiment, the slope of the pitch other than 100% may be set within a certain range for convenience of design or calculation. For example, the pitch slope can be set to 5% ± 1%. Such a This can simplify the adjustment process described above. If the pitch slope is set to a small value, or a less accurate position of the proximity object can be accepted, the pitch slope can even be ignored.
本申請的特徵之一,在於某第一間距斜率等於某第二間距斜率,且兩者並非100%。在一實施例中,該第一間距斜率與該第二間距斜率之差距落在一範圍內。在一實施例中,在一實施例中,第一間距斜率與第二間距斜率為相鄰的間距斜率。在另一實施例中,第一間距斜率與第二間距斜率為不相鄰的間距斜率。 One of the features of the present application is that a certain first pitch slope is equal to a certain second pitch slope, and the two are not 100%. In an embodiment, the difference between the slope of the first pitch and the slope of the second pitch falls within a range. In an embodiment, in an embodiment, the first pitch slope and the second pitch slope are adjacent pitch slopes. In another embodiment, the first pitch slope and the second pitch slope are non-adjacent pitch slopes.
在第一圖到第三圖的實施例中,均使用平行於第一軸向的第一電極作為說明。然而,本領域的普通技術人員可以理解到,上述不同間距的設計也可以同時應用到平行於第二軸向的第二電極,以便減少第二電極的繞線空間與積體電路的腳位。 In the embodiments of the first to third figures, the first electrode parallel to the first axial direction is used as an illustration. However, one of ordinary skill in the art will appreciate that the above-described different pitch designs can also be applied simultaneously to the second electrode parallel to the second axis in order to reduce the winding space of the second electrode and the footprint of the integrated circuit.
請參考圖18所示,其為根據本申請一實施例的觸摸屏之部分電極結構的一示意圖。和前三圖不同的是,第四圖所示具備三種類型的第一電極1810與第二電極1820。 Please refer to FIG. 18 , which is a schematic diagram of a partial electrode structure of a touch screen according to an embodiment of the present application. Different from the first three figures, the fourth figure is provided with three types of first electrodes 1810 and second electrodes 1820.
圖18所示為觸摸屏的左上角部分,第二電極1820a位於觸摸屏的上緣部分。本領域的普通技術人員可以理解到,第一電極1810與第二電極1820可以位於相同的基板上,也可以位於不同的基板上。當位於不同基板時,第二電極1820的各個導電片之間可以不需要搭橋。而當位於相同基板時,第一電極1810與第二電極1820的其中之一,必須要在各個導電片之間搭橋以便使各導電片電性耦合。第二電極1820也可以由左側連接到控制裝置,而不是由右側連接到控制裝置。為了方便作圖與理解,圖18所示係在第二電極1820的各個導電片之間搭橋,本領域的普通技術人員可以理解到圖18 所示僅為實施例的其中之一,本申請還可以應用到上述的變化。 Figure 18 shows the upper left corner portion of the touch screen, and the second electrode 1820a is located at the upper edge portion of the touch screen. One of ordinary skill in the art will appreciate that the first electrode 1810 and the second electrode 1820 may be on the same substrate or on different substrates. When located on different substrates, no bridging may be required between the respective conductive sheets of the second electrode 1820. When located on the same substrate, one of the first electrode 1810 and the second electrode 1820 must be bridged between the respective conductive sheets to electrically couple the conductive sheets. The second electrode 1820 can also be connected to the control device from the left side instead of being connected to the control device from the right side. For ease of drawing and understanding, FIG. 18 is bridged between the respective conductive sheets of the second electrode 1820, as will be understood by those of ordinary skill in the art. The illustration is only one of the embodiments, and the present application can also be applied to the above variations.
第二電極1820a與第一電極1810a相同,為上述的第一類型,兩者皆位於觸摸屏的邊緣,所以其相關的導電片或電極設計僅包含半邊。第二電極1820b與第一電極1820b相同,為上述的第二類型,其相關的導電片為一個四邊形。和圖17所示的第一電極1710b相比,圖18所示的第一電極1810b之導電片並非左右對稱的菱形。第二電極1820c與第一電極1810c相同,為上述的第三類型。 The second electrode 1820a is identical to the first electrode 1810a and is of the first type described above, both of which are located at the edge of the touch screen, so that the associated conductive sheet or electrode design contains only half of the sides. The second electrode 1820b is the same as the first electrode 1820b, and is of the second type described above, and the associated conductive sheet is a quadrilateral. The conductive sheet of the first electrode 1810b shown in FIG. 18 is not a rhombic shape that is bilaterally symmetrical as compared with the first electrode 1710b shown in FIG. The second electrode 1820c is the same as the first electrode 1810c and is of the third type described above.
當相同的驅動信號分別傳送到第二電極1820a與1820b時,由於兩者的導電片面積與其他第二電極1820之間距不同,因此會對相同的第一電極1810產生不同的感應值。同上所述,本申請可以藉由類比前端與/或數位處理的部分對感應值進行調整,而且上述的調整係根據被提供驅動信號的不同第二電極1820加以進行。 When the same driving signals are respectively transmitted to the second electrodes 1820a and 1820b, since the conductive sheet areas of the two are different from the distances of the other second electrodes 1820, different sensing values are generated for the same first electrode 1810. As described above, the present application can adjust the sensing value by analogizing the front end and/or the digital processing portion, and the above adjustment is performed according to the different second electrode 1820 to which the driving signal is supplied.
在一實施例中,當驅動第二電極1820a時的電壓值,可以調整為較驅動第二電極1820b時的電壓值還高。當驅動第二電極1820b時的電壓值,可以調整為較驅動第二電極1820c時的電壓值還高。在另一實施例中,當以相同的驅動信號提供給第二電極1820a時,類比前端電路可以將可變電阻的阻值調整得比以相同的驅動信號提供給第二電極1820b時來得低。當以相同的驅動信號提供給第二電極1820b時,類比前端電路可以將可變電阻的阻值調整得比以相同的驅動信號提供給第二電極1820c時來得低。 In an embodiment, the voltage value when the second electrode 1820a is driven may be adjusted to be higher than the voltage value when the second electrode 1820b is driven. The voltage value when the second electrode 1820b is driven can be adjusted to be higher than the voltage value when the second electrode 1820c is driven. In another embodiment, when the same driving signal is supplied to the second electrode 1820a, the analog front end circuit can adjust the resistance of the variable resistor to be lower than when the same driving signal is supplied to the second electrode 1820b. When the same driving signal is supplied to the second electrode 1820b, the analog front end circuit can adjust the resistance of the variable resistor to be lower than when the same driving signal is supplied to the second electrode 1820c.
本領域的普通技術人員可以理解到,在類比前端電路的接收部分,除了可以針對不同的第二電極1820被驅動時進行調整之外,還可以同時針對不同的第一電極1810進行調整。在一實施例中,假設有M條第一電極 1810與N條第二電極1820,則針對觸摸屏的一次完整掃描,類比前端電路最多可以控制MxN組係數,每一組係數則可以包含上述係數的其中之一或其任意組合,這些係數可以包含但不限於驅動端的驅動信號的驅動時間長短與驅動信號的電壓,以及接收端的可變電阻的電阻值、放大器的增益值、積分器的積分時機(或者稱之為與驅動信號之間的相位差或時間差)、以及積分時間長短等係數。 One of ordinary skill in the art will appreciate that in the receiving portion of the analog front end circuit, in addition to being adjustable for different second electrodes 1820 being driven, adjustments may be made to different first electrodes 1810 simultaneously. In an embodiment, it is assumed that there are M first electrodes 1810 and N second electrodes 1820, for a complete scan of the touch screen, the analog front end circuit can control the MxN group coefficients at most, and each set of coefficients can include one of the above coefficients or any combination thereof, and these coefficients can include It is not limited to the driving time of the driving signal of the driving end and the voltage of the driving signal, and the resistance value of the variable resistor at the receiving end, the gain value of the amplifier, the integration timing of the integrator (or the phase difference between the driving signal and the driving signal or The time difference), as well as the length of the integration time and other factors.
在某些實施例中,驅動信號可以同時被提供到兩條或兩條以上的一組第二電極1820,則上述係數組的數量最多可以是被驅動的第二電極1820之組數與N的乘積。本領域的普通技術人員可以理解到,在某些實施例中,可以不需要針對每一個係數組進行修正。 In some embodiments, the driving signal can be simultaneously supplied to two or more sets of second electrodes 1820, and the number of the above coefficient groups can be at most the number of groups of the driven second electrodes 1820 and N. product. One of ordinary skill in the art will appreciate that in some embodiments, corrections may not be required for each coefficient set.
根據上述的各個實施例及其可能的變化,本申請提出了一種具有不同間距的電極設計之觸摸屏,以及其互電容偵測的方法。根據本申請所製作之觸摸屏,可以拉大電極之間的間距,減少電極的數量,同時還可以維持甚至改善觸摸屏邊緣的偵測性能,以便減少繞線空間與需要占用的積體電路之腳位。 According to various embodiments described above and possible variations thereof, the present application proposes a touch screen having electrode designs with different pitches, and a method of mutual capacitance detection thereof. According to the touch screen manufactured by the present application, the distance between the electrodes can be increased, the number of electrodes can be reduced, and the detection performance of the edge of the touch screen can be maintained or even improved, so as to reduce the winding space and the position of the integrated circuit that needs to be occupied. .
在本發明的一實施例當中,提供一種觸摸屏的信號量測裝置,可以是圖13的前端模組1340。上述的觸摸屏包含平行排列的多條驅動導電條與平行排列的多條偵測導電條組成的多條導電條。所述的驅動導電條與所述的偵測導電條交疊於多個交疊區。該信號量測裝置包含:一驅動電路與一偵測電路。該驅動電路依序提供一第一驅動信號與一第二驅動信號給一第一組該驅動導電條與一第二組該驅動導電條。該偵測電路依序偵測由該至少一偵測導電條的信號分別產生相應於該第一驅動信號與該第二 驅動信號的一第一信號與一第二信號。其中,所述第一驅動信號的驅動時間不同於所述第二驅動信號的驅動時間。 In an embodiment of the invention, a signal measuring device for a touch screen is provided, which may be the front end module 1340 of FIG. The touch screen comprises a plurality of conductive strips arranged in parallel and a plurality of conductive strips arranged in parallel. The driving conductive strip overlaps the detecting conductive strip at a plurality of overlapping regions. The signal measuring device comprises: a driving circuit and a detecting circuit. The driving circuit sequentially supplies a first driving signal and a second driving signal to a first group of the driving conductive strips and a second group of the driving conductive strips. The detecting circuit sequentially detects that the signals of the at least one detecting conductive strip respectively generate corresponding to the first driving signal and the second A first signal and a second signal of the driving signal. The driving time of the first driving signal is different from the driving time of the second driving signal.
在本發明的另一實施例中,提供一種觸摸屏的信號量測方法,可以是圖14A的量測方法。上述的觸摸屏包含平行排列的多條驅動導電條與平行排列的多條偵測導電條組成的多條導電條。所述的驅動導電條與所述的偵測導電條交疊於多個交疊區。該信號量測方法包含:依序提供一第一驅動信號與一第二驅動信號給一第一組該驅動導電條與一第二組該驅動導電條;以及依序偵測由該至少一偵測導電條的信號分別產生相應於該第一驅動信號與該第二驅動信號的一第一信號與一第二信號,其中,所述第一驅動信號的驅動時間不同於所述第二驅動信號的驅動時間。 In another embodiment of the present invention, a signal measurement method of a touch screen is provided, which may be the measurement method of FIG. 14A. The touch screen comprises a plurality of conductive strips arranged in parallel and a plurality of conductive strips arranged in parallel. The driving conductive strip overlaps the detecting conductive strip at a plurality of overlapping regions. The signal measurement method includes: sequentially providing a first driving signal and a second driving signal to a first group of the driving conductive strips and a second group of the driving conductive strips; and sequentially detecting the at least one detecting The signals of the conductive strips respectively generate a first signal and a second signal corresponding to the first driving signal and the second driving signal, wherein a driving time of the first driving signal is different from the second driving signal Drive time.
在本發明的一實施例當中,提供一種觸摸屏的信號量測裝置,可以是圖13的前端模組1340。上述的觸摸屏包含平行排列的多條驅動導電條與平行排列的多條偵測導電條組成的多條導電條。所述的驅動導電條與所述的偵測導電條交疊於多個交疊區。該信號量測裝置包含:一驅動電路與一偵測電路。該驅動電路依序提供一第一驅動信號與一第二驅動信號給一第一組該驅動導電條與一第二組該驅動導電條。該偵測電路依序偵測由該至少一偵測導電條的信號分別產生相應於該第一驅動信號與該第二驅動信號的一第一信號與一第二信號。其中至少下列條件的其中之一或其任意組合成立:所述偵測電路經由一可變電阻連接到該至少一偵測導電條,所述偵測電路產生該第一信號時,該可變電阻被設定為一第一電阻值,所述偵測電路產生該第二信號時,該可變電阻被設定為一第二電阻值,該第一電阻值不同於該第二電阻值;所述偵測電路使用了一第一偵測時間長 度產生該第一信號,所述偵測電路使用了一第二偵測時間長度產生該第二信號,其中該第一偵測時間長度不同於該第二偵測時間長度;所述偵測電路經由一放大器連接至至少一該偵測導電條,所述偵測電路產生該第一信號時,該放大器被設定為一第一倍率值,所述偵測電路產生該第二信號時,該放大器被設定為一第二倍率值,該第一倍率值不同於該第二倍率值;所述偵測電路經過了一第一延遲相位差後產生該第一信號,所述偵測電路經過了一第二延遲相位差後產生該第二信號,其中該第一延遲相位差不同於該第二延遲相位差;所述第一驅動信號的電位不同於該第二驅動信號的電位;以及所述第一驅動信號的驅動時間不同於所述第二驅動信號的驅動時間。 In an embodiment of the invention, a signal measuring device for a touch screen is provided, which may be the front end module 1340 of FIG. The touch screen comprises a plurality of conductive strips arranged in parallel and a plurality of conductive strips arranged in parallel. The driving conductive strip overlaps the detecting conductive strip at a plurality of overlapping regions. The signal measuring device comprises: a driving circuit and a detecting circuit. The driving circuit sequentially supplies a first driving signal and a second driving signal to a first group of the driving conductive strips and a second group of the driving conductive strips. The detecting circuit sequentially detects, by the signals of the at least one detecting conductive strip, a first signal and a second signal corresponding to the first driving signal and the second driving signal, respectively. At least one of the following conditions or any combination thereof is established: the detecting circuit is connected to the at least one detecting conductive strip via a variable resistor, and the variable resistor is generated when the detecting circuit generates the first signal When the detecting circuit generates the second signal, the variable resistor is set to a second resistance value, and the first resistance value is different from the second resistance value; The measurement circuit uses a first detection time Generating the first signal, the detecting circuit generates the second signal by using a second detecting time length, wherein the first detecting time length is different from the second detecting time length; the detecting circuit Connected to at least one of the detecting conductive strips via an amplifier, wherein the detecting circuit generates the first signal, the amplifier is set to a first magnification value, and the detecting circuit generates the second signal when the amplifier Is set to a second magnification value, the first magnification value is different from the second magnification value; the detection circuit generates the first signal after a first delay phase difference, and the detection circuit passes through a Generating the second signal after the second delay phase difference, wherein the first delay phase difference is different from the second delay phase difference; a potential of the first driving signal is different from a potential of the second driving signal; and the The driving time of a driving signal is different from the driving time of the second driving signal.
在本發明的另一實施例中,提供一種觸摸屏的信號量測方法。上述的觸摸屏包含平行排列的多條驅動導電條與平行排列的多條偵測導電條組成的多條導電條。所述的驅動導電條與所述的偵測導電條交疊於多個交疊區。該信號量測方法包含:依序提供一第一驅動信號與一第二驅動信號給一第一組該驅動導電條與一第二組該驅動導電條;以及依序偵測由該至少一偵測導電條的信號分別產生相應於該第一驅動信號與該第二驅動信號的一第一信號與一第二信號,其中至少下列條件的其中之一或其任意組合成立:所述偵測電路經由一可變電阻連接到該至少一偵測導電條,所述偵測電路產生該第一信號時,該可變電阻被設定為一第一電阻值,所述偵測電路產生該第二信號時,該可變電阻被設定為一第二電阻值,該第一電阻值不同於該第二電阻值;所述偵測電路使用了一第一偵測時間長度產生該第一信號,所述偵測電路使用了一第二偵測時間長度產生該第二信 號,其中該第一偵測時間長度不同於該第二偵測時間長度;所述偵測電路經由一放大器連接至至少一該偵測導電條,所述偵測電路產生該第一信號時,該放大器被設定為一第一倍率值,所述偵測電路產生該第二信號時,該放大器被設定為一第二倍率值,該第一倍率值不同於該第二倍率值;所述偵測電路經過了一第一延遲相位差後產生該第一信號,所述偵測電路經過了一第二延遲相位差後產生該第二信號,其中該第一延遲相位差不同於該第二延遲相位差;所述第一驅動信號的電位不同於該第二驅動信號的電位;以及所述第一驅動信號的驅動時間不同於所述第二驅動信號的驅動時間。 In another embodiment of the present invention, a signal measurement method of a touch screen is provided. The touch screen comprises a plurality of conductive strips arranged in parallel and a plurality of conductive strips arranged in parallel. The driving conductive strip overlaps the detecting conductive strip at a plurality of overlapping regions. The signal measurement method includes: sequentially providing a first driving signal and a second driving signal to a first group of the driving conductive strips and a second group of the driving conductive strips; and sequentially detecting the at least one detecting The signals of the conductive strips respectively generate a first signal and a second signal corresponding to the first driving signal and the second driving signal, wherein at least one of the following conditions or any combination thereof is established: the detecting circuit Connected to the at least one detecting conductive strip via a variable resistor, wherein the detecting circuit generates the first signal, the variable resistor is set to a first resistance value, and the detecting circuit generates the second signal When the variable resistor is set to a second resistance value, the first resistance value is different from the second resistance value; the detecting circuit generates the first signal by using a first detection time length, The detecting circuit generates the second letter by using a second detection time length The first detecting time length is different from the second detecting time length; the detecting circuit is connected to the at least one detecting conductive strip via an amplifier, and when the detecting circuit generates the first signal, The amplifier is set to a first magnification value, and when the detecting circuit generates the second signal, the amplifier is set to a second magnification value, the first magnification value is different from the second magnification value; The measuring circuit generates the first signal after a first delay phase difference, and the detecting circuit generates the second signal after a second delay phase difference, wherein the first delay phase difference is different from the second delay a phase difference; a potential of the first driving signal is different from a potential of the second driving signal; and a driving time of the first driving signal is different from a driving time of the second driving signal.
在本發明的一實施例中,提供了一種觸控系統,包含上述的觸摸屏與信號量測裝置。 In an embodiment of the invention, a touch system is provided, comprising the above touch screen and signal measuring device.
在一實施例中,所述第一驅動信號的驅動時間與該第二驅動信號的驅動時間為多組參數組當中的兩組參數值。 In an embodiment, the driving time of the first driving signal and the driving time of the second driving signal are two sets of parameter values among the plurality of groups of parameters.
在一實施例中,所述第一驅動信號的驅動時間與該第二驅動信號的驅動時間的一時間長度比例相應於下列參數之一或其組合:該第一組該驅動導電條與該第二組該驅動導電條的一面積比例;以及該第一組該驅動導電條與相鄰該驅動導電條的間距及該第二組該驅動導電條與相鄰該驅動導電條的間距之一間距比例。 In an embodiment, a time length ratio of a driving time of the first driving signal to a driving time of the second driving signal corresponds to one or a combination of the following parameters: the first group of the driving conductive strips and the first An area ratio of the two driving strips; and a spacing between the first group of the driving strips and the adjacent driving strips and a spacing between the second group of the driving strips and the adjacent driving strips proportion.
在一實施例中,其中所述第一驅動信號的驅動時間與該第二驅動信號的一電位比例相應於下列參數之一或其組合:該第一組該驅動導電條與該第二組該驅動導電條的一面積比例;以及該第一組該驅動導電條與相鄰該驅動導電條的間距及該第二組該驅動導電條與相鄰該驅動導電條 的間距之一間距比例。 In an embodiment, wherein a driving time of the first driving signal and a potential ratio of the second driving signal correspond to one or a combination of the following parameters: the first group of the driving conductive strips and the second group Driving an area ratio of the conductive strip; and spacing between the first set of the driving conductive strips and the adjacent driving conductive strips and the second set of the driving conductive strips and adjacent the driving conductive strips One of the pitch ratios.
在一實施例中,所述偵測電路使用了一第一偵測時間長度產生該第一信號,使用了一第二偵測時間長度產生該第二信號。其中該第一偵測時間相應於該第一驅動信號的驅動時間,該第二偵測時間相應於該第二驅動信號的驅動時間。 In an embodiment, the detecting circuit generates the first signal by using a first detection time length, and generates the second signal by using a second detection time length. The first detection time corresponds to a driving time of the first driving signal, and the second detection time corresponds to a driving time of the second driving signal.
在一實施例中,所述第一偵測時間相同於該第一驅動信號的驅動時間,該第二偵測時間相同於該第二驅動信號的驅動時間,該第一偵測時間不同於該第二偵測時間。 In an embodiment, the first detection time is the same as the driving time of the first driving signal, and the second detecting time is the same as the driving time of the second driving signal, and the first detecting time is different from the driving time. Second detection time.
在一實施例中,所述第一偵測時間大於該第一驅動信號的驅動時間,該第二偵測時間大於該第二驅動信號的驅動時間。 In an embodiment, the first detection time is greater than a driving time of the first driving signal, and the second detection time is greater than a driving time of the second driving signal.
在一實施例中,所述偵測電路經過了一第一延遲相位差後產生該第一信號,經過了一第二延遲相位差後產生該第二信號,其中所述的第一延遲相位差不同於該第二延遲相位差。 In an embodiment, the detecting circuit generates the first signal after a first delay phase difference, and generates the second signal after a second delay phase difference, wherein the first delay phase difference Different from the second delay phase difference.
在一實施例中,所述第一組驅動導電條包含一條或多條連續的該驅動導電條,該第二組驅動導電條包含一條或多條連續的該驅動導電條,該第一組該驅動導電條與該第二組該驅動導電條包含相同數量的該驅動導電條。 In one embodiment, the first set of driving conductive strips comprises one or more consecutive driving conductive strips, and the second set of driving conductive strips comprises one or more consecutive driving conductive strips, the first group of The drive strips and the second set of drive strips comprise the same number of the drive strips.
在一實施例中,該第一組該驅動導電條與該第二組該驅動導電條不包括該觸摸屏的任一側驅動導電條。 In an embodiment, the first set of the driving conductive strips and the second set of the driving conductive strips do not include any one of the driving strips of the touch screen.
在一實施例中,該驅動電路與該偵測電路為前端模組之一部分。 In an embodiment, the driving circuit and the detecting circuit are part of a front end module.
在本發明的一實施例當中,提供一種觸摸屏的信號量測裝 置,可以是圖13的前端模組1340。上述的觸摸屏包含平行排列的多條驅動導電條與平行排列的多條偵測導電條組成的多條導電條。所述的驅動導電條與所述的偵測導電條交疊於多個交疊區。該信號量測裝置包含:一驅動電路與一偵測電路。該驅動電路依序於一第一驅動時機點與一第二驅動時機點分別提供一第一驅動信號與一第二驅動信號給一第一組該驅動導電條與一第二組該驅動導電條。該偵測電路依序偵測由該至少一偵測導電條的信號分別產生相應於該第一驅動信號與該第二驅動信號的一第一信號與一第二信號。其中,所述第一驅動時機點不同於所述第二驅動時機點。 In an embodiment of the invention, a semaphore measurement of a touch screen is provided. The front end module 1340 of FIG. 13 can be used. The touch screen comprises a plurality of conductive strips arranged in parallel and a plurality of conductive strips arranged in parallel. The driving conductive strip overlaps the detecting conductive strip at a plurality of overlapping regions. The signal measuring device comprises: a driving circuit and a detecting circuit. The driving circuit sequentially supplies a first driving signal and a second driving signal to a first group of the driving conductive strips and a second group of the driving conductive strips, respectively, at a first driving timing point and a second driving timing point. . The detecting circuit sequentially detects, by the signals of the at least one detecting conductive strip, a first signal and a second signal corresponding to the first driving signal and the second driving signal, respectively. The first driving opportunity point is different from the second driving timing point.
在本發明的另一實施例中,提供一種觸摸屏的信號量測方法,可以是圖14D的量測方法。上述的觸摸屏包含平行排列的多條驅動導電條與平行排列的多條偵測導電條組成的多條導電條。所述的驅動導電條與所述的偵測導電條交疊於多個交疊區。該信號量測方法包含:依序於一第一驅動時機點與一第二驅動時機點分別提供一第一驅動信號與一第二驅動信號給一第一組該驅動導電條與一第二組該驅動導電條;依序偵測由該至少一偵測導電條的信號分別產生相應於該第一驅動信號與該第二驅動信號的一第一信號與一第二信號,其中,所述第一驅動時機點不同於所述第二驅動時機點。 In another embodiment of the present invention, a signal measurement method of a touch screen is provided, which may be the measurement method of FIG. 14D. The touch screen comprises a plurality of conductive strips arranged in parallel and a plurality of conductive strips arranged in parallel. The driving conductive strip overlaps the detecting conductive strip at a plurality of overlapping regions. The signal measurement method includes: providing a first driving signal and a second driving signal to a first group of the driving conductive strips and a second group respectively according to a first driving timing point and a second driving timing point Driving the conductive strips; sequentially detecting, by the signals of the at least one detecting conductive strip, a first signal and a second signal corresponding to the first driving signal and the second driving signal, wherein the A drive timing point is different from the second drive timing point.
在本發明的一實施例當中,提供一種觸摸屏的信號量測裝置,可以是圖13的前端模組1340。上述的觸摸屏包含平行排列的多條驅動導電條與平行排列的多條偵測導電條組成的多條導電條。所述的驅動導電條與所述的偵測導電條交疊於多個交疊區。該信號量測裝置包含:一驅動電路與一偵測電路。該驅動電路依序於一第一驅動時間與一第二驅動時間 分別提供一第一驅動信號與一第二驅動信號給相鄰的一第一組該驅動導電條與一第二組該驅動導電條。該驅動電路依序於一第三驅動時間與一第四驅動時間分別提供一第三驅動信號與一第四驅動信號給相鄰的一第三組該驅動導電條與一第四組該驅動導電條。該偵測電路依序偵測由該至少一偵測導電條的信號分別產生相應於該第一驅動信號、該第二驅動信號、該第三驅動信號與該第四驅動信號的一第一信號、一第二信號、一第三信號、一第四信號。其中,所述第二驅動時間與該第一驅動時間之間的一第一時間差不同於該第四驅動時間與該第三驅動時間的一第二時間差。 In an embodiment of the invention, a signal measuring device for a touch screen is provided, which may be the front end module 1340 of FIG. The touch screen comprises a plurality of conductive strips arranged in parallel and a plurality of conductive strips arranged in parallel. The driving conductive strip overlaps the detecting conductive strip at a plurality of overlapping regions. The signal measuring device comprises: a driving circuit and a detecting circuit. The driving circuit sequentially processes a first driving time and a second driving time A first driving signal and a second driving signal are respectively provided to an adjacent one of the first driving strip and the second group of the driving strips. The driving circuit sequentially supplies a third driving signal and a fourth driving signal to a third group of the driving conductive strips and a fourth group of the driving conductive signals, respectively, in a third driving time and a fourth driving time. article. The detecting circuit sequentially detects, by the signals of the at least one detecting conductive strip, a first signal corresponding to the first driving signal, the second driving signal, the third driving signal, and the fourth driving signal, respectively. a second signal, a third signal, and a fourth signal. The first time difference between the second driving time and the first driving time is different from a second time difference between the fourth driving time and the third driving time.
在本發明的另一實施例中,提供一種觸摸屏的信號量測方法,可以是圖14B的量測方法。上述的觸摸屏包含平行排列的多條驅動導電條與平行排列的多條偵測導電條組成的多條導電條。所述的驅動導電條與所述的偵測導電條交疊於多個交疊區。該信號量測方法包含:依序於一第一驅動時間與一第二驅動時間分別提供一第一驅動信號與一第二驅動信號給相鄰的一第一組該驅動導電條與一第二組該驅動導電條;依序於一第三驅動時間與一第四驅動時間分別提供一第三驅動信號與一第四驅動信號給相鄰的一第三組該驅動導電條與一第四組該驅動導電條;以及依序偵測由該至少一偵測導電條的信號分別產生相應於該第一驅動信號、該第二驅動信號、該第三驅動信號與該第四驅動信號的一第一信號、一第二信號、一第三信號、一第四信號,其中,所述第二驅動時間與該第一驅動時間之間的一第一時間差不同於該第四驅動時間與該第三驅動時間的一第二時間差。 In another embodiment of the present invention, a signal measurement method of a touch screen is provided, which may be the measurement method of FIG. 14B. The touch screen comprises a plurality of conductive strips arranged in parallel and a plurality of conductive strips arranged in parallel. The driving conductive strip overlaps the detecting conductive strip at a plurality of overlapping regions. The signal measurement method includes: providing a first driving signal and a second driving signal to a adjacent one of the first group of driving strips and a second according to a first driving time and a second driving time, respectively. And driving the conductive strips; respectively, providing a third driving signal and a fourth driving signal to a third group of the driving conductive strips and a fourth group respectively according to a third driving time and a fourth driving time Driving the conductive strips; and sequentially detecting signals corresponding to the first driving signal, the second driving signal, the third driving signal, and the fourth driving signal by the signals of the at least one detecting conductive strip a signal, a second signal, a third signal, a fourth signal, wherein a first time difference between the second driving time and the first driving time is different from the fourth driving time and the third A second time difference in drive time.
在本發明的一實施例當中,提供一種觸摸屏的信號量測裝 置,可以是圖13的前端模組1340。上述的觸摸屏包含平行排列的多條驅動導電條與平行排列的多條偵測導電條組成的多條導電條。所述的驅動導電條與所述的偵測導電條交疊於多個交疊區。該信號量測裝置包含:一驅動電路與一偵測電路。該驅動電路依序於一第一驅動時間、一第二驅動時間與一第三驅動時間分別提供一第一驅動信號、一第二驅動信號與一第三驅動信號給相鄰的一第一組該驅動導電條、一第二組該驅動導電條與一第三組該驅動導電條。該偵測電路依序偵測由該至少一偵測導電條的信號分別產生相應於該第一驅動信號、該第二驅動信號與該第三驅動信號的一第一信號、一第二信號與一第三信號。其中,所述第二驅動時間與該第一驅動時間之間的一第一時間差不同於該第三驅動時間與該第二驅動時間的一第二時間差。 In an embodiment of the invention, a semaphore measurement of a touch screen is provided. The front end module 1340 of FIG. 13 can be used. The touch screen comprises a plurality of conductive strips arranged in parallel and a plurality of conductive strips arranged in parallel. The driving conductive strip overlaps the detecting conductive strip at a plurality of overlapping regions. The signal measuring device comprises: a driving circuit and a detecting circuit. The driving circuit sequentially supplies a first driving signal, a second driving signal and a third driving signal to an adjacent first group in a first driving time, a second driving time and a third driving time. The driving strip, a second set of the driving strips and a third set of the driving strips. The detecting circuit sequentially detects, by the signals of the at least one detecting conductive strip, a first signal and a second signal corresponding to the first driving signal, the second driving signal and the third driving signal, respectively A third signal. The first time difference between the second driving time and the first driving time is different from a second time difference between the third driving time and the second driving time.
在本發明的另一實施例中,提供一種觸摸屏的信號量測方法,可以是圖14C的量測方法。上述的觸摸屏包含平行排列的多條驅動導電條與平行排列的多條偵測導電條組成的多條導電條。所述的驅動導電條與所述的偵測導電條交疊於多個交疊區。該信號量測方法包含:依序於一第一驅動時間、一第二驅動時間與一第三驅動時間分別提供一第一驅動信號、一第二驅動信號與一第三驅動信號給相鄰的一第一組該驅動導電條、一第二組該驅動導電條與一第三組該驅動導電條;以及依序偵測由該至少一偵測導電條的信號分別產生相應於該第一驅動信號、該第二驅動信號與該第三驅動信號的一第一信號、一第二信號與一第三信號,其中,所述第二驅動時間與該第一驅動時間之間的一第一時間差不同於該第三驅動時間與該第二驅動時間的一第二時間差。 In another embodiment of the present invention, a signal measurement method of a touch screen is provided, which may be the measurement method of FIG. 14C. The touch screen comprises a plurality of conductive strips arranged in parallel and a plurality of conductive strips arranged in parallel. The driving conductive strip overlaps the detecting conductive strip at a plurality of overlapping regions. The signal measurement method includes: providing a first driving signal, a second driving signal and a third driving signal to adjacent ones in a first driving time, a second driving time and a third driving time, respectively. a first set of the driving conductive strips, a second set of the driving conductive strips and a third set of the driving conductive strips; and sequentially detecting signals generated by the at least one detecting conductive strips respectively corresponding to the first driving a first signal, a second signal, and a third signal of the second driving signal and the third driving signal, wherein a first time difference between the second driving time and the first driving time Different from the second time difference between the third driving time and the second driving time.
以上所述僅為本發明的較佳實施例而已,並非用以限定本發明的申請專利範圍;凡其他為脫離本發明所揭示的精神下所完成的等效改變或修飾,均應包括在下述的申請專利範圍。 The above description is only the preferred embodiment of the present invention, and is not intended to limit the scope of the claims of the present invention; any equivalent changes or modifications which are made in the spirit of the present invention should be included in the following. The scope of the patent application.
151‧‧‧驅動電極 151‧‧‧ drive electrodes
152‧‧‧偵測電極 152‧‧‧Detection electrode
1310‧‧‧控制模組 1310‧‧‧Control Module
1340‧‧‧前端模組 1340‧‧‧ Front End Module
1341‧‧‧驅動模組 1341‧‧‧Drive Module
1342‧‧‧偵測模組 1342‧‧‧Detection module
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