TWM298190U - Capacitive touchpad with pushbutton structure - Google Patents

Capacitive touchpad with pushbutton structure Download PDF

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Publication number
TWM298190U
TWM298190U TW95205355U TW95205355U TWM298190U TW M298190 U TWM298190 U TW M298190U TW 95205355 U TW95205355 U TW 95205355U TW 95205355 U TW95205355 U TW 95205355U TW M298190 U TWM298190 U TW M298190U
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TW
Taiwan
Prior art keywords
button
panel
touch panel
capacitive touch
area
Prior art date
Application number
TW95205355U
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Chinese (zh)
Inventor
I-Hau Yeh
Yen-Chang Chiu
Shu-Ren Chen
Yung-Lieh Chien
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Elan Microelectronics Corp
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Publication date
Application filed by Elan Microelectronics Corp filed Critical Elan Microelectronics Corp
Priority to TW95205355U priority Critical patent/TWM298190U/en
Publication of TWM298190U publication Critical patent/TWM298190U/en

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Description

M298190 八、新型說明: 【新型所屬之技術領域】 本創作係有關一種電容式觸控板,特別是關於一種具 有按鍵結構的電容式觸控板。 【先前技術】 觸控板已經被廣泛地應用在電子產品上。觸控板提供 、.種簡卓輪便且低廉的指示裝置。已知的觸控板有電阻 式、電磁式及電容式三種,電容式觸控螢幕已被應用在例 ,可上網的公共電話或導覽系統,然而不具手寫輸入功 月> 電阻式觸控螢幕已被應用在例如個人數位助理(pda ) 或電子字典,但無法藉由使用者手指輕觸進行輸入。目前 的平板電腦或電子書包料,置有整合手寫辨識與按鍵 輸入功此之觸控板,乃是電阻式或電磁式。電阻式的觸控 板操作時而施壓點集中,而電磁式的觸控板則需要配合一 種具有電池的輸入筆進行輸入。 “就性能及成本而言,電容式觸控板顯然超越電阻式及 電磁式觸控板。電容式_板仏作原理是湘使用者的 手‘或^體接觸到觸控板的瞬間產生—個電容效應,因而 可藉由電容值的變化確定手指或導體的位置。因此,電容 :气觸控板不像電磁式觸控板必須藉助消耗電源的輸入 筆’並且電容式觸控板的使用也不像電阻式觸控板需要施 =中’因此使料命較長。再者,電容摘控板的組成 簡單,元件少’產品良率高,使得電容式觸控板大量生產 6 M298190 時成本較低。 若應用在鍵盤 缺乏按壓按鍵 電容式觸控板 一般而言,電容式觸控板為平面結構, 一 &…者在使用手指接觸平面結構時, 的手和觸感’如果將傳統的按鍵結構結合在 上可以增加使用者在使用時的觸感。 【新型内容】 μ的主要目的,在於提出—種具有按鍵結構的電 合,工板,以增加使用者的按壓觸感。 根據本創作,一種具有按鍵結構的電容式觸控板包括 -面板’具有多個按鍵結構;以及該面板蚊義許多區 域ϋ域對應—個按鍵結構;其中,該按鍵結構係供 手指或導體碰觸產生一按鍵訊號。 【實施方式】 ❿ 帛圖係本創作的電容式觸控板ίο的面板示意圖, 在面板12上具有多個按鍵結構14,在面板12上包含按鍵 區或16及非按鍵區域18,每一個按鍵區域μ對應一個按 鍵結構14,在手指或導體碰觸按鍵結構14時,產生相對 應的按鍵5孔被’並藉由微處理單元處理按鍵訊號,按鍵訊 —-1可由—顯示器顯示。按鍵結構14係由突出物或其他與 具有觸碰感覺的元件形成在按鍵區域16中,電容式觸控 板10更可連接-顯示器19,以供顯示按鍵訊號對應的按 鍵結構14表示的符號。 M298190 第二圖係第一圖的垂直剖面圖,電容式觸控板1〇包 括絕緣層20及基板22,絕緣層20係因應按鍵結構14而 形成凹凸表面,其突起區域為按鍵區域16,而非突起凹入 區域為非按鍵區域18,按鍵區域16的高度H2,非按鍵區 域18的高度H1,利用高度H2大於高度耵形成凹凸表面 在絕緣層20上,高度H2及H1係因應設計的需求而修改, 並不心各電各式觸控板1 〇的基本結構,而基板22係配合 按鍵結構14產生的按鍵訊號作相對應的處理。 第三圖係本創作偵測按鍵的示意圖,在面板12上掃 描以偵測按鍵結構14是否受手指或導體碰觸而產生偵測 訊號,在兩旁有電容式觸控板1〇的側面視圖,本實施例 係以矩陣式掃描的方式偵測按鍵結構14,根據第三圖,電 容式觸控板10係以箭頭&及b方向使用掃描線偵測按鍵 結構14的動作,箭頭a方向係由區域線τ〇到Τι3之間掃 描’箭頭b方向係由區域線Τ14到Τ33之間掃描。 、第四圖係第三圖箭頭a方向的掃描值,以掃描在各區 域線的中心值,在按鍵區域16所感應的數值為A2,在非 按鍵區域18所感應的數值為A0 ,而按鍵區域16及非按鍵 區域18的交越區域所感應的數值為A1,由於在電容式觸 控板10加入按鍵結構14,使得面板12上的厚度不同,因 此,掃描電容式觸控板10的感應數值並非與習知的平面 式電谷式觸控板同樣為線性。根據第四圖的結果,本創作 將所接收的訊號乘上一組權重係數,並以A2為基礎,可 得到在按鍵區域16的權重係數為丨,在非按鍵區域18的 M298190 權重係數為A2/A0,而按鍵區域16及非按鍵區域18的交 越區域的權重係數為A2/A1,例如第五圖係第四圖的一組 權重係數。 第六圖係本創作按鍵偵測工作原理的示意圖,例如, 當使用者欲使用電容式觸控板10時,習慣的動作係在面 板12上滑動以搜尋需輸入的按鍵,並於尋找動作後施予 一比在面板12上滑動大的力量下壓要輸入的按鍵,而本 創作將按鍵彳貞測工作原理分為兩個動作,第一動作為搜尋 按鍵,根據第六圖所示,在面板12上偵測具有壓力值但 小於AS時,表示使用者在面板12上滑動,第二動作為確 認按鍵’根據弟六圖所不’在面板12上偵測的壓力值向 上提昇,且感應壓力的最大值超過AP時,表示使用者下 壓要輸入的按鍵,根據此按鍵偵測工作原理,可依照兩個 條件判斷按鍵輸入信號的產生,第一為設計偵測的感應值 增量大於(AP-AS)或感應值大於AP,第二為各區域線T0到 T33的掃描值非零的數量增加決定。 以上對於本創作之較佳實施例所作的敘述係為闡明 之目的,而無意限定本創作精確地為所揭露的形式,基於 以上的教導或從本創作的實施例學習而作修改或變化是 可能的,實施例係為解說本創作的原理以及讓熟習該項技 術者以各種實施例利用本創作在實際應用上而選擇及敘 述,本創作的技術思想企圖由以下的申請專利範圍及其均 等來決定。 M298190 【圖式簡單說明】 對於熟習本技藝之人士而言,從以下所作的詳細敘述 配合伴隨的圖式,本創作將能夠更清楚地被暸解,其上述 及其他目的及優點將會變得更明顯,其中: 第一圖係本創作的電容式觸控板的面板示意圖; 第二圖係第一圖的垂直剖面圖; 第三圖係本創作偵測按鍵的示意圖; 第四圖係第二圖前頭a方向的掃描值, 第五圖係第四圖的一組權重係數;以及 第六圖係本創作按鍵偵測工作原理的示意圖。 【主要元件符號說明】 10 電容式觸控板 12 面板 14 按鍵結構 16 按鍵區域 18 非按鍵區域 19 顯示器 20 絕緣層 22 基板M298190 VIII. New Description: [New Technology Field] This creation is about a capacitive touch panel, especially a capacitive touch panel with a button structure. [Prior Art] Touch panels have been widely used in electronic products. The touchpad provides a simple and inexpensive indicator device. Known touch panels are available in resistive, electromagnetic and capacitive types. Capacitive touch screens have been used in applications such as public telephones or navigation systems that can be accessed by the Internet, but without handwriting input power > resistive touch The screen has been applied, for example, to a personal digital assistant (pda) or electronic dictionary, but cannot be entered by tapping the user's finger. The current tablet or e-book material is equipped with a touchpad that integrates handwriting recognition and key input. It is resistive or electromagnetic. The resistive touchpad operates with a concentrated set of pressure points, while the electromagnetic touchpad needs to be input with a battery-equipped stylus. "In terms of performance and cost, the capacitive touch panel obviously surpasses the resistive and electromagnetic touch panels. The capacitive _ board is based on the principle of the user's hand or the moment the body touches the touchpad. Capacitance effect, so the position of the finger or conductor can be determined by the change of the capacitance value. Therefore, the capacitance: the air touch panel is not like the electromagnetic touch panel must rely on the input pen that consumes power and the use of the capacitive touch panel It is not like the resistive touch panel needs to be applied in the middle, thus making the material life longer. Moreover, the composition of the capacitor pick-up board is simple, the component is small, and the product yield is high, which makes the capacitive touch panel mass production of 6 M298190. The cost is lower. If the application lacks a button on the keyboard, the capacitive touch panel is generally a flat structure, and the hands and touches of a & The traditional button structure can be combined to increase the user's touch when using. [New content] The main purpose of μ is to propose a kind of electric connection with a button structure, to increase the user's pressing. According to the present invention, a capacitive touch panel having a button structure includes a panel having a plurality of button structures, and a panel structure corresponding to a plurality of regions of the panel; wherein the button structure is for a finger Or the conductor touches to generate a button signal. [Embodiment] The schematic diagram of the capacitive touch panel of the present invention has a plurality of button structures 14 on the panel 12, and a button area or panel 16 on the panel 12 And the non-key area 18, each button area μ corresponds to a button structure 14, when the finger or the conductor touches the button structure 14, the corresponding button 5 hole is generated and the button signal is processed by the micro processing unit, and the button signal is used. -1 can be displayed by the display. The button structure 14 is formed in the button area 16 by protrusions or other elements having a touch feeling, and the capacitive touch panel 10 can be further connected to the display 19 for displaying the button signals. The symbol shown by the button structure 14. M298190 The second figure is a vertical sectional view of the first figure, the capacitive touch panel 1 includes an insulating layer 20 and a substrate 22, and the insulating layer 20 is The concave-convex surface is formed by the button structure 14, and the protruding area is the button area 16, and the non-protruding concave area is the non-key area 18, the height H2 of the key area 16, the height H1 of the non-key area 18, and the height H2 is greater than the height 耵The concave and convex surface is formed on the insulating layer 20. The heights H2 and H1 are modified according to the design requirements, and the basic structure of each type of touch panel 1 is not required, and the substrate 22 is matched with the button signal generated by the button structure 14. Corresponding processing. The third figure is a schematic diagram of the creation detection button, which is scanned on the panel 12 to detect whether the button structure 14 is touched by a finger or a conductor to generate a detection signal, and a capacitive touch panel 1 is arranged on both sides. In the embodiment, the button structure 14 is detected by matrix scanning. According to the third figure, the capacitive touch panel 10 uses the scanning line to detect the action of the button structure 14 in the directions of arrows & The direction of the arrow a is scanned from the area line τ 〇 to Τ ι 3 'the direction of the arrow b is scanned between the area lines Τ 14 to Τ 33 . The fourth figure is the scan value of the arrow a direction of the third figure, so as to scan the center value of each area line, the value sensed in the button area 16 is A2, and the value sensed in the non-key area 18 is A0, and the key is pressed. The value of the crossover area of the area 16 and the non-key area 18 is A1. Since the thickness of the panel 12 is different when the key structure 14 is added to the capacitive touch panel 10, the sensing of the capacitive touch panel 10 is scanned. The values are not as linear as the conventional planar electric valley touch panels. According to the result of the fourth figure, the author multiplies the received signal by a set of weight coefficients, and based on A2, the weight coefficient of the button area 16 is 丨, and the weight of the M298190 of the non-key area 18 is A2. /A0, and the weighting coefficient of the intersection area of the button area 16 and the non-key area 18 is A2/A1, for example, a set of weight coefficients of the fourth figure of the fifth figure. The sixth figure is a schematic diagram of the working principle of the button detection of the present invention. For example, when the user wants to use the capacitive touch panel 10, the customary action is to slide on the panel 12 to search for the button to be input, and after searching for the action, The button is pressed to press the button to be input on the panel 12, and the creation divides the button operation principle into two actions. The first action is a search button, according to the sixth figure, When the panel 12 detects that there is a pressure value but is smaller than AS, it means that the user slides on the panel 12, and the second action is to confirm that the button 'up to the pressure value detected on the panel 12 according to the sixth figure is upward, and the sensing is performed. When the maximum value of the pressure exceeds the AP, it means that the user presses the button to be input. According to the function of the button detection, the input signal of the button can be judged according to two conditions. The first is that the increment of the sensing value of the design detection is greater than (AP-AS) or the sensed value is greater than the AP, and the second is determined by the increase in the number of non-zero scan values of the respective area lines T0 to T33. The above description of the preferred embodiment of the present invention is for illustrative purposes, and is not intended to limit the present invention to the precise form disclosed. It is possible to make modifications or variations based on the above teachings or learning from the embodiments of the present invention. The embodiments are intended to explain the principles of the present invention and to enable those skilled in the art to use the present invention to select and narrate in practical applications in various embodiments. The technical idea of the present invention is intended to be based on the following claims and their equals. Decide. M298190 [Simple Description of the Drawings] For those skilled in the art, the present description will be more clearly understood from the following detailed description in conjunction with the accompanying drawings, and the above and other objects and advantages will become more apparent. Obviously, the first picture is a schematic diagram of the panel of the capacitive touch panel of the present invention; the second picture is a vertical sectional view of the first picture; the third picture is a schematic diagram of the creation detection button; the fourth picture is the second picture The scan value in the direction of the head in the front, the fifth graph is a set of weight coefficients in the fourth graph; and the sixth graph is a schematic diagram of the working principle of the keystroke detection. [Main component symbol description] 10 Capacitive touch panel 12 Panel 14 Key structure 16 Button area 18 Non-button area 19 Display 20 Insulation 22 Substrate

Claims (1)

M298190 九、申請專利範圍·· 1.-種具有按鍵結構的電容相控板,包括·· 一面板,具有多個按鍵結構;以及 ^面板被定義許多區域,每—區域對應—個按鍵結構; 〃,忒按鍵結構係供手指或導體碰觸產生—按鍵訊號£ 2.如申請專利範圍第i項之電容式觸控板,更包括—顯示器 以供顯示該按鍵訊號對應的按鍵結構。 ' ^ 其中該面板包括 3·如申請專利範圍第1項之電容式觸控板 一絕緣層。M298190 IX. Patent application scope · 1. A capacitive phase control board with button structure, including · a panel with multiple button structures; and ^ panel is defined with many areas, each area corresponding to a button structure; 〃, 忒 button structure is generated by finger or conductor contact - button signal £ 2. For example, the capacitive touch panel of claim i, and the display for displaying the button structure corresponding to the button signal. ' ^ Where the panel includes 3 · Capacitive touch panel, an insulating layer, as claimed in claim 1. 4·如申請專利範圍第 包括一突起物。 項之電容式觸控板 其中該按鍵結構 114. If the scope of the patent application includes a protrusion. Capacitive touch panel of the item, wherein the button structure 11
TW95205355U 2003-08-07 2003-08-07 Capacitive touchpad with pushbutton structure TWM298190U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103995596A (en) * 2013-02-17 2014-08-20 柏腾科技股份有限公司 Improved touch type keyboard structure

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103995596A (en) * 2013-02-17 2014-08-20 柏腾科技股份有限公司 Improved touch type keyboard structure

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