TWI450177B - Resistive touch control device and compensating voltage determining method - Google Patents

Resistive touch control device and compensating voltage determining method Download PDF

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TWI450177B
TWI450177B TW100104586A TW100104586A TWI450177B TW I450177 B TWI450177 B TW I450177B TW 100104586 A TW100104586 A TW 100104586A TW 100104586 A TW100104586 A TW 100104586A TW I450177 B TWI450177 B TW I450177B
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voltage
touch
conductive strips
sensing regions
compensation
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TW201234250A (en
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Lin Lin
Chi Yuen Zeng
Wen Hung Wang
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Wintek Corp
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Description

電阻式觸控裝置及補償電壓測定方法 Resistive touch device and compensation voltage measuring method

本發明是有關於一種觸控技術，且特別是有關於一種電阻式觸控裝置及補償電壓測定方法。 The present invention relates to a touch technology, and more particularly to a resistive touch device and a method for measuring a compensation voltage.

電阻式觸控面板所需成本較低且電阻式觸控面板技術發展較為成熟，因而市場佔有率較高，但電阻式觸控面板無法執行多點觸控。為了達到多點觸控的目的，電阻式觸控面板的上下導電層會分別沿著不同方向分割為多個導電條。由於製程的關係，這些導電條的阻抗分佈可能會呈現不均勻，亦即這些導電條的阻抗分佈呈現非線性。為了對非線性的阻抗分佈進行補償，廠商會在多個成品中隨機選擇一個，依據所選擇的電阻式觸控面板調整所輸出的觸控電壓。然而，若有電阻式觸控面板的阻抗分佈與所選擇的電阻式觸控面板差異過大，則仍需重新調整輸出的觸控電壓，以致於產品開發的時間會被延遲。 Resistive touch panels require lower cost and resistive touch panel technology is more mature, so the market share is higher, but resistive touch panels cannot perform multi-touch. In order to achieve the purpose of multi-touch, the upper and lower conductive layers of the resistive touch panel are respectively divided into a plurality of conductive strips in different directions. Due to the process relationship, the impedance distribution of these conductive strips may be uneven, that is, the impedance distribution of these conductive strips is nonlinear. In order to compensate for the nonlinear impedance distribution, the manufacturer randomly selects one of the plurality of finished products, and adjusts the output touch voltage according to the selected resistive touch panel. However, if the impedance distribution of the resistive touch panel is too different from the selected resistive touch panel, the output touch voltage needs to be re-adjusted, so that the product development time is delayed.

本發明提供一種電阻式觸控裝置，可依據第一補償電壓對感應區域對應第一軸向的第一觸控電壓進行補償，並依據第二補償電壓對感應區域對應第二軸向的第二觸控電壓進行補償。 The present invention provides a resistive touch device capable of compensating a first touch voltage corresponding to a first axial direction of a sensing region according to a first compensation voltage, and corresponding to a second axial direction of the sensing region according to the second compensation voltage The touch voltage is compensated.

本發明提供一種電阻式觸控裝置的補償電壓測定方法，可分別依據各感應區域對應第一軸向的第一觸控電壓及對應第二軸向的第二觸控電壓計算出各感應區域對應的第一補償電壓及第二補 償電壓。 The invention provides a method for measuring a compensation voltage of a resistive touch device, which can respectively calculate corresponding regions according to the first touch voltage corresponding to the first axial direction and the second touch voltage corresponding to the second axial direction of each sensing region. First compensation voltage and second supplement Recharge the voltage.

本發明提出一種補償電壓測定方法，適用於具有多條第一導電條及多條第二導電條的一電阻式觸控面板，其中各第一導電條重疊這些第二導電條於多個感應區域。補償電壓測定方法包括下列步驟：按壓這些感應區域；依序對這些第一導電條施加一壓差；量測這些第二導電條以取得這些感應區域對應一第一軸向的第一觸控電壓；依序對這些第二導電條施加壓差；量測這些第一導電條以取得這些感應區域對應一第二軸向的第二觸控電壓；依據這些感應區域對應的第一觸控電壓計算這些感應區域分別對應的一第一補償電壓，依據這些感應區域對應的第二觸控電壓計算這些感應區域分別對應的一第二補償電壓。 The invention provides a method for measuring a compensation voltage, which is suitable for a resistive touch panel having a plurality of first conductive strips and a plurality of second conductive strips, wherein each of the first conductive strips overlaps the second conductive strips in the plurality of sensing regions . The method for measuring the compensation voltage includes the steps of: pressing the sensing regions; sequentially applying a pressure difference to the first conductive strips; and measuring the second conductive strips to obtain the first touch voltage corresponding to the first axial direction of the sensing regions Applying a voltage difference to the second conductive strips in sequence; measuring the first conductive strips to obtain a second touch voltage corresponding to a second axial direction of the sensing regions; and calculating according to the first touch voltage corresponding to the sensing regions Each of the sensing regions corresponds to a first compensation voltage, and a second compensation voltage corresponding to each of the sensing regions is calculated according to the second touch voltage corresponding to the sensing regions.

本發明另提出一種電阻式觸控裝置，其包括觸控面板、記憶單元及偵測單元。觸控面板具有多條第一導電條及多條第二導電條，這些第一導電條與這些第二導電條相互交錯，且各第一導電條重疊這些第二導電條於多個感應區域。記憶單元儲存如上述之補償電壓測定方法所取得的多個第一補償電壓及多個第二補償電壓，這些第一補償電壓及這些第二補償電壓分別對應這些感應區域。偵測單元耦接這些第一導電條、這些第二導電條及記憶單元。偵測單元偵測這些第一導電條或這些第二導電條以取得一觸控電壓，並依據觸控電壓判斷這些感應區域中何者為一觸碰區域。據此，從記憶單元取得對應觸碰區域的第一補償電壓或第二補償電壓，並依據取得的第一補償電壓或第二補償電壓對觸控電壓進行補償。 The invention further provides a resistive touch device, which comprises a touch panel, a memory unit and a detecting unit. The touch panel has a plurality of first conductive strips and a plurality of second conductive strips. The first conductive strips are interdigitated with the second conductive strips, and each of the first conductive strips overlaps the second conductive strips in the plurality of sensing regions. The memory unit stores a plurality of first compensation voltages and a plurality of second compensation voltages obtained by the compensation voltage measurement method, and the first compensation voltages and the second compensation voltages respectively correspond to the sensing regions. The detecting unit is coupled to the first conductive strips, the second conductive strips, and the memory unit. The detecting unit detects the first conductive strips or the second conductive strips to obtain a touch voltage, and determines which one of the sensing areas is a touch area according to the touch voltage. Accordingly, the first compensation voltage or the second compensation voltage corresponding to the touch region is obtained from the memory unit, and the touch voltage is compensated according to the obtained first compensation voltage or second compensation voltage.

基於上述，本發明的補償電壓測定方法可量測觸控面板對應 第一軸向的第一觸控電壓及對應第二軸向的第二觸控電壓，並依據這些第一觸控電壓及第二觸控電壓計算各感應區域對應的第一補償電壓及第二補償電壓。本發明的電阻式觸控裝置可利用第一補償電壓對第一觸控電壓進行補償，並且可利用第二補償對第二觸控電壓進行補償。藉此，補償後的第一觸控電壓或第二觸控電壓與觸碰區域的對應關係更趨於線性。 Based on the above, the compensation voltage measuring method of the present invention can measure the touch panel corresponding a first touch voltage of the first axial direction and a second touch voltage corresponding to the second axial direction, and calculating a first compensation voltage and a second corresponding to each sensing area according to the first touch voltage and the second touch voltage Compensation voltage. The resistive touch device of the present invention can compensate the first touch voltage with the first compensation voltage, and can compensate the second touch voltage with the second compensation. Thereby, the corresponding relationship between the compensated first touch voltage or the second touch voltage and the touch area is more linear.

為讓本發明之上述特徵和優點能更明顯易懂，下文特舉實施例，並配合所附圖式作詳細說明如下。 The above described features and advantages of the present invention will be more apparent from the following description.

現將詳細參考本發明之實施例，在附圖中說明所述實施例之實例。另外，凡可能之處，在圖式及實施方式中使用相同標號的元件/構件/符號代表相同或類似部分。更進一步而言，以下實施例中所描述的「第一」與「第二」是用以區別相似元件之用，而非限定各元件的形成順序。 Reference will now be made in detail to the embodiments of the claims In addition, wherever possible, the elements and/ Furthermore, the "first" and "second" described in the following embodiments are used to distinguish similar elements, and do not limit the order in which the elements are formed.

圖1繪示為依據本發明之一實施例的電阻式觸控裝置的系統示意圖。請參照圖1，電阻式觸控裝置100包括觸控面板110、偵測單元130及記憶單元140。觸控面板110設置有多個第一導電條(在此以五條為例，如111、113、115、117、119)、多個第二導電條(在此以五條為例，如121、123、125、127、129)。第一導電條111、113、115、117、119與第二導電條121、123、125、127、129為相互垂直交錯，並且形成多個感應區域(如C11~C15、C21~C25、C31~C35、C41~C45、C51~C55)。 FIG. 1 is a schematic diagram of a system of a resistive touch device according to an embodiment of the invention. Referring to FIG. 1 , the resistive touch device 100 includes a touch panel 110 , a detecting unit 130 , and a memory unit 140 . The touch panel 110 is provided with a plurality of first conductive strips (here, five strips are taken as an example, such as 111, 113, 115, 117, 119), and a plurality of second conductive strips (here, five strips are taken as an example, such as 121 and 123). , 125, 127, 129). The first conductive strips 111, 113, 115, 117, 119 and the second conductive strips 121, 123, 125, 127, 129 are vertically interlaced with each other, and form a plurality of sensing regions (such as C11~C15, C21~C25, C31~). C35, C41~C45, C51~C55).

偵測單元130耦接第一導電條111、113、115、117、119與 第二導電條121、123、125、127、129及記憶單元140。記憶單元140儲存多個第一補償電壓及多個第二補償電壓，這些第一補償電壓及這些第二補償電壓分別對應感應區域C11~C15、C21~C25、C31~C35、C41~C45及C51~C55。當偵測單元130偵測觸控面板110時，可依序對第一導電條111、113、115、117、119施加壓差，並且偵測第二導電條121、123、125、127、129是否輸出觸控電壓(如VT1)。換言之，偵測單元130會依序將第一導電條111、113、115、117、119的第一端111a、113a、115a、117a、119a耦接至系統電壓(如VDD)，並且同步地將第一導電條111、113、115、117、119的第二端111b、113b、115b、117b、119b耦接至接地電壓(如GND)。並且，偵測單元130可偵測第二導電條121、123、125、127、129的第一端121a、123a、125a、127a、129a是否輸出對應X軸的觸控電壓(如VT1)。 The detecting unit 130 is coupled to the first conductive strips 111, 113, 115, 117, and 119. The second conductive strips 121, 123, 125, 127, 129 and the memory unit 140. The memory unit 140 stores a plurality of first compensation voltages and a plurality of second compensation voltages, and the first compensation voltages and the second compensation voltages respectively correspond to the sensing regions C11~C15, C21~C25, C31~C35, C41~C45 and C51. ~C55. When the detecting unit 130 detects the touch panel 110, a differential pressure is applied to the first conductive strips 111, 113, 115, 117, and 119, and the second conductive strips 121, 123, 125, 127, and 129 are detected. Whether to output a touch voltage (such as VT1). In other words, the detecting unit 130 sequentially couples the first ends 111a, 113a, 115a, 117a, 119a of the first conductive strips 111, 113, 115, 117, 119 to a system voltage (such as VDD), and synchronously The second ends 111b, 113b, 115b, 117b, 119b of the first conductive strips 111, 113, 115, 117, 119 are coupled to a ground voltage (such as GND). Moreover, the detecting unit 130 can detect whether the first ends 121a, 123a, 125a, 127a, 129a of the second conductive strips 121, 123, 125, 127, 129 output a touch voltage (such as VT1) corresponding to the X axis.

假設偵測單元130將第一導電條119的第一端119a耦接至系統電壓VDD且將第一導電條119的第二端119b耦接至接地電壓GND時，於第二導電條123的第一端123a偵測至觸控電壓VT1(即第一觸控電壓)。此時，偵測單元130可依據觸控電壓VT1判斷被按壓的感應區域為C52，並且偵測單元130會從記憶單元140取得對應感應區域C52的第一補償電壓。接著，偵測單元130依據所取得的第一補償電壓對觸控電壓VT1進行補償並輸出補償後的觸控電壓VT1’。 Assuming that the detecting unit 130 couples the first end 119 a of the first conductive strip 119 to the system voltage VDD and the second end 119 b of the first conductive strip 119 to the ground voltage GND, the second conductive strip 123 One end 123a detects the touch voltage VT1 (ie, the first touch voltage). At this time, the detecting unit 130 can determine that the pressed sensing area is C52 according to the touch voltage VT1, and the detecting unit 130 obtains the first compensation voltage corresponding to the sensing area C52 from the memory unit 140. Then, the detecting unit 130 compensates the touch voltage VT1 according to the obtained first compensation voltage and outputs the compensated touch voltage VT1'.

另一方面，當偵測單元130偵測觸控面板110時，可依序對第二導電條121、123、125、127、129施加壓差，並且偵測第一導電條111、113、115、117、119是否輸出觸控電壓(如VT2)。 換言之，偵測單元130會依序將第二導電條121、123、125、127、129的第一端121a、123a、125a、127a、129a耦接至系統電壓(如VDD)，並且同步地將第二導電條121、123、125、127、129的第二端121b、123b、125b、127b、129b耦接至接地電壓(如GND)。並且，偵測單元140可偵測第一導電條111、113、115、117、119的第一端111a、113a、115a、117a、119a是否輸出對應Y軸的觸控電壓(如VT2)。 On the other hand, when the detecting unit 130 detects the touch panel 110, a differential pressure is applied to the second conductive strips 121, 123, 125, 127, and 129, and the first conductive strips 111, 113, and 115 are detected. Whether 117, 119 output touch voltage (such as VT2). In other words, the detecting unit 130 sequentially couples the first ends 121a, 123a, 125a, 127a, 129a of the second conductive strips 121, 123, 125, 127, 129 to a system voltage (such as VDD), and synchronously The second ends 121b, 123b, 125b, 127b, 129b of the second conductive strips 121, 123, 125, 127, 129 are coupled to a ground voltage (such as GND). Moreover, the detecting unit 140 can detect whether the first ends 111a, 113a, 115a, 117a, 119a of the first conductive strips 111, 113, 115, 117, 119 output a touch voltage (such as VT2) corresponding to the Y axis.

假設偵測單元130將第二導電條121的第一端121a耦接至系統電壓VDD且將第二導電條121的第二端121b耦接至接地電壓GND時，於第一導電條117的第一端117a偵測至觸控電壓VT2(即第二觸控電壓)。此時，偵測單元130可依據觸控電壓VT2判斷被按壓的感應區域為C31，並且偵測單元130會從記憶單元140取得應感應區域C31的第二補償電壓。接著，依據所取得的第二補償電壓對觸控電壓VT2進行補償並輸出補償後的觸控電壓VT2’。 Assuming that the detecting unit 130 couples the first end 121a of the second conductive strip 121 to the system voltage VDD and the second end 121b of the second conductive strip 121 to the ground voltage GND, the first conductive strip 117 One end 117a detects the touch voltage VT2 (ie, the second touch voltage). At this time, the detecting unit 130 can determine that the pressed sensing area is C31 according to the touch voltage VT2, and the detecting unit 130 obtains the second compensation voltage of the sensing area C31 from the memory unit 140. Then, the touch voltage VT2 is compensated according to the obtained second compensation voltage, and the compensated touch voltage VT2' is output.

依據上述，當偵測單元130偵測到觸控電壓(如VT1或VT2)時，偵測單元130會依據觸控電壓判斷被按壓的感應區域。接著，偵測單元130依據被按壓的感應區域從記憶單元140取得對應的第一補償電壓或對應的第二補償電壓，以對觸控電壓進行補償，而補償後的觸控電壓(如VT1’或VT2’)與被觸碰的感應區域的對應關係更趨於線性。下述則說明第一補償電壓及第二補償電壓的測定方式。 According to the above, when the detecting unit 130 detects the touch voltage (such as VT1 or VT2), the detecting unit 130 determines the pressed sensing area according to the touch voltage. Then, the detecting unit 130 obtains a corresponding first compensation voltage or a corresponding second compensation voltage from the memory unit 140 according to the pressed sensing region to compensate the touch voltage, and the compensated touch voltage (such as VT1' Or the correspondence between VT2') and the touched sensing area is more linear. The measurement method of the first compensation voltage and the second compensation voltage will be described below.

圖2繪示為依據本發明一實施例的補償電壓測定裝置耦接觸控面板的電路示意圖。請參照圖2，補償電壓測定裝置200包括按 壓治具(未繪示)、驅動單元210、量測單元220及計算單元230。按壓治具(未繪示)可具有多個尖端，以同時按壓觸控面板110的感應區域C11~C15、C21~C25、C31~C35、C41~C45及C51~C55。並且，按壓治具(未繪示)的尖端可設計為按壓感應區域C11~C15、C21~C25、C31~C35、C41~C45及C51~C55的中心點。 FIG. 2 is a schematic circuit diagram of a compensation voltage measuring device coupled to a touch panel according to an embodiment of the invention. Referring to FIG. 2, the compensation voltage measuring device 200 includes pressing A jig (not shown), a driving unit 210, a measuring unit 220, and a calculating unit 230. The pressing fixture (not shown) may have a plurality of tips to simultaneously press the sensing regions C11~C15, C21~C25, C31~C35, C41~C45 and C51~C55 of the touch panel 110. Moreover, the tip of the pressing jig (not shown) can be designed to press the center points of the sensing regions C11 to C15, C21 to C25, C31 to C35, C41 to C45, and C51 to C55.

驅動單元210耦接第一導電條111、113、115、117、119及第二導電條121、123、125、127、129，以依序對第一導電條111、113、115、117、119及第二導電條121、123、125、127、129施加壓差。量測單元220耦接第一導電條111、113、115、117、119及第二導電條121、123、125、127、129，以量測感應區域C11~C15、C21~C25、C31~C35、C41~C45及C51~C55對應X軸的觸控電壓(如VT1)及對應Y軸向的觸控電壓(如VT2)。計算單元230，耦接量測單元220，以分別依據這些觸控電壓VT1及這些觸控電壓VT2計算感應區域C11~C15、C21~C25、C31~C35、C41~C45及C51~C55分別對應的第一補償電壓及第二補償電壓。 The driving unit 210 is coupled to the first conductive strips 111, 113, 115, 117, 119 and the second conductive strips 121, 123, 125, 127, 129 to sequentially contact the first conductive strips 111, 113, 115, 117, 119 And the second conductive strips 121, 123, 125, 127, 129 apply a pressure difference. The measuring unit 220 is coupled to the first conductive strips 111, 113, 115, 117, 119 and the second conductive strips 121, 123, 125, 127, 129 to measure the sensing regions C11~C15, C21~C25, C31~C35 C41~C45 and C51~C55 correspond to the X-axis touch voltage (such as VT1) and the corresponding Y-axis touch voltage (such as VT2). The calculating unit 230 is coupled to the measuring unit 220 to calculate the sensing regions C11~C15, C21~C25, C31~C35, C41~C45 and C51~C55 respectively according to the touch voltage VT1 and the touch voltage VT2. The first compensation voltage and the second compensation voltage.

進一步來說，驅動單元210包括開關SW1~SW20。開關SW1耦接於系統電壓VDD與第一導電條111的第一端111a之間。開關SW2耦接於系統電壓VDD與第一導電條113的第一端113a之間。以此類推，開關SW3、SW4及SW5分別耦接於系統電壓VDD與第一導電條115、117及119的第一端115a、117a及119a之間。開關SW6耦接於系統電壓VDD與第二導電條121的第一端121a之間。開關SW7耦接於系統電壓VDD與第二導電條123的第一端123a之間。以此類推，開關SW8、SW9及SW10分別耦接於系統電壓VDD與第二導電條125、127及129的第一端125a、127a 及129a之間。在時序上，開關SW1~SW10中僅會導通其中一個，以使系統電壓VDD提供至第一導電條111、113、115、117、119的第一端111a、113a、115a、117a、119a及第二導電條121、123、125、127、129的第一端121a、123a、125a、127a、129a的其中之一。 Further, the driving unit 210 includes switches SW1 to SW20. The switch SW1 is coupled between the system voltage VDD and the first end 111a of the first conductive strip 111. The switch SW2 is coupled between the system voltage VDD and the first end 113a of the first conductive strip 113. By the way, the switches SW3, SW4 and SW5 are respectively coupled between the system voltage VDD and the first ends 115a, 117a and 119a of the first conductive strips 115, 117 and 119. The switch SW6 is coupled between the system voltage VDD and the first end 121a of the second conductive strip 121. The switch SW7 is coupled between the system voltage VDD and the first end 123a of the second conductive strip 123. And so on, the switches SW8, SW9, and SW10 are respectively coupled to the system voltage VDD and the first ends 125a, 127a of the second conductive strips 125, 127, and 129 Between 129a. In timing, only one of the switches SW1 SW SW10 is turned on to provide the system voltage VDD to the first ends 111a, 113a, 115a, 117a, 119a and the first ends of the first conductive strips 111, 113, 115, 117, 119. One of the first ends 121a, 123a, 125a, 127a, 129a of the two conductive strips 121, 123, 125, 127, 129.

開關SW11耦接於接地電壓GND與第一導電條111的第二端111b之間。開關SW12耦接於接地電壓GND與第一導電條113的第二端113b之間。以此類推，開關SW13、SW14及SW15分別耦接於接地電壓GND與第一導電條115、117及119的第二端115b、117b及119b之間。 The switch SW11 is coupled between the ground voltage GND and the second end 111b of the first conductive strip 111. The switch SW12 is coupled between the ground voltage GND and the second end 113b of the first conductive strip 113. By the way, the switches SW13, SW14 and SW15 are respectively coupled between the ground voltage GND and the second ends 115b, 117b and 119b of the first conductive strips 115, 117 and 119.

開關SW16耦接於接地電壓GND與第二導電條121的第二端121b之間。開關SW17耦接於接地電壓GND與第二導電條123的第二端123b之間。以此類推，開關SW18、SW19及SW20分別耦接於接地電壓GND與第二導電條125、127及129的第二端125b、127b及129b之間。在時序上，開關SW11~SW20中僅會導通其中一個，以使接地電壓GND提供至第一導電條111、113、115、117、119的第二端111b、113b、115b、117b、119b及第二導電條121、123、125、127、129的第二端121b、123b、125b、127b、129b的其中之一。其中，開關SW1與開關SW11會同步導通及關閉，開關SW2與開關SW12會同步導通及關閉，其餘則以此類推。 The switch SW16 is coupled between the ground voltage GND and the second end 121b of the second conductive strip 121. The switch SW17 is coupled between the ground voltage GND and the second end 123b of the second conductive strip 123. By the way, the switches SW18, SW19 and SW20 are respectively coupled between the ground voltage GND and the second ends 125b, 127b and 129b of the second conductive strips 125, 127 and 129. In timing, only one of the switches SW11~SW20 is turned on to provide the ground voltage GND to the second ends 111b, 113b, 115b, 117b, 119b and the first ends of the first conductive strips 111, 113, 115, 117, 119 One of the second ends 121b, 123b, 125b, 127b, 129b of the two conductive strips 121, 123, 125, 127, 129. Among them, the switch SW1 and the switch SW11 will be turned on and off synchronously, and the switch SW2 and the switch SW12 will be turned on and off synchronously, and the rest will be deduced by analogy.

在本實施例中，量測單元220分別透過開關SW21~30耦接第一導電條111、113、115、117、119的第一端111a、113a、115a、117a、119a及第二導電條121、123、125、127、129的第一端121a、 123a、125a、127a、129a。其中，開關SW21~25會同步導通，開關SW26~30會同步導通，而開關SW21~25的導通時間會不同於開關SW26~30的導通時間。 In the embodiment, the measuring unit 220 is coupled to the first ends 111a, 113a, 115a, 117a, 119a and the second conductive strip 121 of the first conductive strips 111, 113, 115, 117, 119 through the switches SW21~30, respectively. The first end 121a of 123, 125, 127, 129, 123a, 125a, 127a, 129a. Among them, the switches SW21~25 will be turned on synchronously, and the switches SW26~30 will be turned on synchronously, and the on-time of the switches SW21~25 will be different from the on-time of the switches SW26~30.

當開關SW1與開關SW11導通時，開關SW26~30會同步導通，此時量測單元220會量測到感應區域C11~C15對應X軸的觸控電壓VT1。當開關SW2與開關SW12導通時，開關SW26~30會同步導通，此時量測單元220會量測到感應區域C21~C25對應X軸的觸控電壓VT1。依據上述，當開關SW3與開關SW13、開關SW4與開關SW14、開關SW5與開關SW15對應的導通時，則量測單元220會量測到感應區域C31~C35、C41~C45、C51~C55對應X軸的觸控電壓VT1。為了便於說明，下述以VT1(C11)表示感應區域C11對應X軸的觸控電壓VT1，以VT1(C12)表示感應區域C12對應X軸的觸控電壓VT1，其餘則以此類推。 When the switch SW1 and the switch SW11 are turned on, the switches SW26~30 are synchronously turned on. At this time, the measuring unit 220 measures the touch voltage VT1 corresponding to the X axis of the sensing regions C11~C15. When the switch SW2 and the switch SW12 are turned on, the switches SW26~30 are synchronously turned on. At this time, the measuring unit 220 measures the touch voltage VT1 corresponding to the X axis of the sensing regions C21 to C25. According to the above, when the switch SW3 and the switch SW13, the switch SW4 and the switch SW14, the switch SW5 and the switch SW15 are turned on, the measuring unit 220 measures the sensing areas C31~C35, C41~C45, C51~C55 corresponding to X. The touch voltage of the axis is VT1. For convenience of explanation, the touch voltage VT1 corresponding to the X-axis of the sensing region C11 is represented by VT1 (C11), and the touch voltage VT1 corresponding to the X-axis of the sensing region C12 is represented by VT1 (C12), and the rest is deduced by analogy.

依據第一導電條111、113、115、117、119及第二導電條121、123、125、127、129的配置方式，VT1(C11)、VT1(C21)、VT1(C31)、VT1(C41)及VT1(C51)應該相等。但由於第一導電條111、113、115、117、119上的阻抗分佈不均勻，因此VT1(C11)、VT1(C21)、VT1(C31)、VT1(C41)、VT1(C51)實際上可能會不相等。此時，計算單元230會將VT1(C11)、VT1(C21)、VT1(C31)、VT1(C41)、VT1(C51)的平均值作為感應區域C11、C21、C31、C41及C51對應的第一參考值VR11，亦即對應第二導電條121的感應區域C11、C21、C31、C41及C51會共同對應第一參考值VR11。此時，對應感應區域C11的第一補償電壓VC1(C11)=VT1(C11)-VR11，對應感應區域C21的第一補償電壓VC1(C21)=VT1(C21)-VR11， 其餘則以此類推。 Depending on the arrangement of the first conductive strips 111, 113, 115, 117, 119 and the second conductive strips 121, 123, 125, 127, 129, VT1 (C11), VT1 (C21), VT1 (C31), VT1 (C41) ) and VT1 (C51) should be equal. However, since the impedance distribution on the first conductive strips 111, 113, 115, 117, 119 is not uniform, VT1 (C11), VT1 (C21), VT1 (C31), VT1 (C41), VT1 (C51) may actually Will not be equal. At this time, the calculation unit 230 compares the average values of VT1 (C11), VT1 (C21), VT1 (C31), VT1 (C41), and VT1 (C51) as the corresponding regions of the sensing regions C11, C21, C31, C41, and C51. A reference value VR11, that is, the sensing regions C11, C21, C31, C41 and C51 corresponding to the second conductive strip 121 will collectively correspond to the first reference value VR11. At this time, the first compensation voltage VC1 (C11)=VT1(C11)-VR11 corresponding to the sensing area C11 corresponds to the first compensation voltage VC1(C21)=VT1(C21)-VR11 of the sensing area C21. The rest is like this.

接著，計算單元230可利用VT1(C12)、VT1(C22)、VT1(C32)、VT1(C42)及VT1(C52)的平均值作為感應區域C12、C22、C32、C42及C52對應的第一參考值VR12，亦即對應第二導電條123的感應區域C12、C22、C32、C42及C52會共同對應第一參考值VR12。此時，對應感應區域C12的第一補償電壓VC1(C12)=VT1(C12)-VR12，對應感應區域C22的第一補償電壓VC1(C22)=VT1(C22)-VR12，其餘則以此類推。依據上述，計算單元230可計算出對應C11~C15、C21~C25、C31~C35、C41~C45及C51~C55的第一補償電壓VC1。 Next, the calculation unit 230 can use the average values of VT1 (C12), VT1 (C22), VT1 (C32), VT1 (C42), and VT1 (C52) as the first corresponding to the sensing regions C12, C22, C32, C42, and C52. The reference value VR12, that is, the sensing regions C12, C22, C32, C42, and C52 corresponding to the second conductive strip 123 will collectively correspond to the first reference value VR12. At this time, the first compensation voltage VC1 (C12)=VT1(C12)-VR12 corresponding to the sensing area C12 corresponds to the first compensation voltage VC1(C22)=VT1(C22)-VR12 of the sensing area C22, and so on. . According to the above, the calculation unit 230 can calculate the first compensation voltage VC1 corresponding to C11~C15, C21~C25, C31~C35, C41~C45 and C51~C55.

相似地，當開關SW6與開關SW16、開關SW7與開關SW17、開關SW8與開關SW18、開關SW9與開關SW19、開關SW5與開關SW15對應的導通時，開關SW21~25會同步導通，而量測單元220會量測到感應區域C11~C15、C21~C25、C31~C35、C41~C45、C51~C55對應Y軸的觸控電壓VT2，並且參照上述計算方式可求得感應區域C11~C15、C21~C25、C31~C35、C41~C45、C51~C55對應的第二參考電壓及對應的第二補償電壓。 Similarly, when the switch SW6 and the switch SW16, the switch SW7 and the switch SW17, the switch SW8 and the switch SW18, the switch SW9 and the switch SW19, the switch SW5 and the switch SW15 are turned on, the switches SW21~25 are synchronously turned on, and the measuring unit 220 will measure the touch voltage VT2 corresponding to the Y axis in the sensing areas C11~C15, C21~C25, C31~C35, C41~C45, C51~C55, and the sensing areas C11~C15, C21 can be obtained by referring to the above calculation method. ~C25, C31~C35, C41~C45, C51~C55 corresponding second reference voltage and corresponding second compensation voltage.

舉例來說，計算單元230可利用觸控電壓VT2(C11)、VT2(C12)、VT2(C13)、VT2(C14)及VT2(C15)的平均值作為感應區域C11、C12、C13、C14及C15對應的第二參考值VR21，亦即對應第一導電條111的感應區域C12、C22、C32、C42及C52會共同對應第二參考值VR21。並且，可依據上述說明計算出感應區域C11、C12、C13、C14及C15對應的第二補償電壓VC2(C11)、VC2(C12)、VC2(C13)、VC2(C14)及VC2(C15)。其餘部份則可參 照上述說明自行理解，在此則不再贅述。 For example, the calculation unit 230 can use the average values of the touch voltages VT2 (C11), VT2 (C12), VT2 (C13), VT2 (C14), and VT2 (C15) as the sensing regions C11, C12, C13, and C14. The second reference value VR21 corresponding to C15, that is, the sensing regions C12, C22, C32, C42, and C52 corresponding to the first conductive strip 111 will collectively correspond to the second reference value VR21. Further, the second compensation voltages VC2 (C11), VC2 (C12), VC2 (C13), VC2 (C14), and VC2 (C15) corresponding to the sensing regions C11, C12, C13, C14, and C15 can be calculated according to the above description. The rest can be used I understand it myself according to the above instructions, and I will not repeat them here.

值得一提的是，感應區域C11~C15、C21~C25、C31~C35、C41~C45、C51~C55對應X軸的觸控電壓VT1及對應Y軸的觸控電壓VT2可儲存於圖1的記憶單元140中，以作為偵測單元130判斷被觸碰的感應區域的依據。 It is worth mentioning that the sensing voltages VT1 corresponding to the X-axis and the touch voltage VT2 corresponding to the Y-axis of the sensing regions C11~C15, C21~C25, C31~C35, C41~C45, C51~C55 can be stored in FIG. In the memory unit 140, the detection unit 130 determines the basis of the touched sensing area.

依據上述說明，可彙整為一補償電壓測定方法，以應用於補償電壓測定裝置200。圖3繪示為依據本發明一實施例的補償電壓測定方法的流程圖。請參照圖3，在本實施例中，會先按壓這些感應區域(步驟S310)，其中按壓這些感應區域的動作可透過上述按壓治具來完成。接著，依序對這些第一導電條施加一壓差(步驟S320)，並且量測這些第二導電條以取得這些感應區域對應X軸向的第一觸控電壓(步驟S330)。 According to the above description, it can be summarized into a compensation voltage measuring method for applying to the compensation voltage measuring device 200. FIG. 3 is a flow chart of a method for determining a compensation voltage according to an embodiment of the invention. Referring to FIG. 3, in the embodiment, the sensing regions are first pressed (step S310), wherein the pressing of the sensing regions can be performed by the pressing fixture. Then, a pressure difference is applied to the first conductive strips in sequence (step S320), and the second conductive strips are measured to obtain the first touch voltages corresponding to the X-axis directions of the sensing regions (step S330).

再來，依序對這些第二導電條施加壓差(步驟S340)，並且量測這些第一導電條以取得這些感應區域對應Y軸向的第二觸控電壓(步驟S350)。其中，依序對這些第一導電條施加一壓差及依序對這些第二導電條施加壓差的動作可透過上述驅動單元來完成，並且量測這些第一導電條及這些第二導電條的動作可透過上述量測單元來完成。最後，依據這些感應區域對應的第一觸控電壓計算這些感應區域分別對應的一第一補償電壓，依據這些感應區域對應的第二觸控電壓計算這些感應區域分別對應的一第二補償電壓(步驟S360)，其中計算這些感應區域分別對應的第一補償電壓及第二補償電壓的動作可透過上述計算單元來完成。上述步驟的細節可參照說明書中相關部份所述，在此則不再贅述。 Then, a pressure difference is applied to the second conductive strips in sequence (step S340), and the first conductive strips are measured to obtain the second touch voltages corresponding to the Y-axis of the sensing regions (step S350). The step of sequentially applying a pressure difference to the first conductive strips and sequentially applying a pressure difference to the second conductive strips may be performed through the driving unit, and measuring the first conductive strips and the second conductive strips. The action can be done through the above measuring unit. Finally, a first compensation voltage corresponding to each of the sensing regions is calculated according to the first touch voltage corresponding to the sensing regions, and a second compensation voltage corresponding to the sensing regions is calculated according to the second touch voltage corresponding to the sensing regions ( Step S360), wherein the operations of calculating the first compensation voltage and the second compensation voltage corresponding to the sensing regions respectively are performed by the calculating unit. The details of the above steps can be referred to the relevant parts in the specification, and will not be described herein.

綜上所述，本發明實施例的電阻式觸控裝置、補償電壓測定 裝置及補償電壓測定方法，其補償電壓測定裝置及補償電壓測定方法可量測觸控面板對應X軸的多個第一觸控電壓及對應Y軸的多個第二觸控電壓，並依據這些第一觸控電壓及這些第二觸控電壓計算各感應區域對應的第一補償電壓及第二補償電壓。而電阻式觸控裝置可利用第一補償電壓對對應X軸的第一觸控電壓進行補償，並且可利用第二補償對對應Y軸的第二觸控電壓進行補償。藉此，補償後的第一觸控電壓或第二觸控電壓與觸碰區域的對應關係更趨於線性。 In summary, the resistive touch device and the compensation voltage are measured according to the embodiment of the invention. The device and the compensation voltage measuring method, the compensation voltage measuring device and the compensation voltage measuring method can measure the plurality of first touch voltages corresponding to the X axis of the touch panel and the plurality of second touch voltages corresponding to the Y axis, and according to the The first touch voltage and the second touch voltage calculate a first compensation voltage and a second compensation voltage corresponding to the sensing regions. The resistive touch device can compensate the first touch voltage corresponding to the X axis by using the first compensation voltage, and can compensate the second touch voltage corresponding to the Y axis by using the second compensation. Thereby, the corresponding relationship between the compensated first touch voltage or the second touch voltage and the touch area is more linear.

雖然本發明已以實施例揭露如上，然其並非用以限定本發明，任何所屬技術領域中具有通常知識者，在不脫離本發明之精神和範圍內，當可作些許之更動與潤飾，故本發明之保護範圍當視後附之申請專利範圍所界定者為準。 Although the present invention has been disclosed in the above embodiments, it is not intended to limit the invention, and any one of ordinary skill in the art can make some modifications and refinements without departing from the spirit and scope of the invention. The scope of the invention is defined by the scope of the appended claims.

100‧‧‧電阻式觸控裝置 100‧‧‧Resistive touch device

110‧‧‧觸控面板 110‧‧‧Touch panel

111、113、115、117、119‧‧‧第一導電條 111, 113, 115, 117, 119‧‧‧ first conductive strip

121、123、125、127、129‧‧‧第二導電條 121, 123, 125, 127, 129‧‧‧ second conductive strip

111a、113a、115a、117a、119a、121a、123a、125a、127a、129a‧‧‧第一端 111a, 113a, 115a, 117a, 119a, 121a, 123a, 125a, 127a, 129a‧‧‧ first end

111b、113b、115b、117b、119b、121b、123b、125b、127b、129b‧‧‧第二端 111b, 113b, 115b, 117b, 119b, 121b, 123b, 125b, 127b, 129b‧‧‧ second end

130‧‧‧偵測單元 130‧‧‧Detection unit

140‧‧‧記憶單元 140‧‧‧ memory unit

200‧‧‧補償電壓測定裝置 200‧‧‧Compensation voltage measuring device

210‧‧‧驅動單元 210‧‧‧Drive unit

220‧‧‧量測單元 220‧‧‧Measurement unit

230‧‧‧計算單元 230‧‧‧Computation unit

C11~C15、C21~C25、C31~C35、C41~C45、C51~C55‧‧‧感應區域 C11~C15, C21~C25, C31~C35, C41~C45, C51~C55‧‧‧ Sensing area

SW1~SW30‧‧‧開關 SW1~SW30‧‧‧ switch

VDD‧‧‧系統電壓 VDD‧‧‧ system voltage

VT1、VT2‧‧‧觸控電壓 VT1, VT2‧‧‧ touch voltage

VT1’、VT2’‧‧‧補償後的觸控電壓 VT1', VT2'‧‧‧ compensated touch voltage

X、Y‧‧‧軸向 X, Y‧‧‧ axial

S310、S320、S330、S340、350、360‧‧‧步驟 S310, S320, S330, S340, 350, 360‧‧‧ steps

圖1繪示為依據本發明之一實施例的電阻式觸控裝置的系統示意圖。 FIG. 1 is a schematic diagram of a system of a resistive touch device according to an embodiment of the invention.

圖2繪示為依據本發明一實施例的補償電壓測定裝置耦接觸控面板的電路示意圖。 FIG. 2 is a schematic circuit diagram of a compensation voltage measuring device coupled to a touch panel according to an embodiment of the invention.

圖3繪示為依據本發明一實施例的補償電壓測定方法的流程圖。 FIG. 3 is a flow chart of a method for determining a compensation voltage according to an embodiment of the invention.

110‧‧‧觸控面板 110‧‧‧Touch panel

111、113、115、117、119‧‧‧第一導電條 111, 113, 115, 117, 119‧‧‧ first conductive strip

121、123、125、127、129‧‧‧第二導電條 121, 123, 125, 127, 129‧‧‧ second conductive strip

111a、113a、115a、117a、119a、121a、123a、125a、127a、129a‧‧‧第一端 111a, 113a, 115a, 117a, 119a, 121a, 123a, 125a, 127a, 129a‧‧‧ first end

111b、113b、115b、117b、119b、121b、123b、125b、127b、129b‧‧‧第二端 111b, 113b, 115b, 117b, 119b, 121b, 123b, 125b, 127b, 129b‧‧‧ second end

200‧‧‧補償電壓測定裝置 200‧‧‧Compensation voltage measuring device

210‧‧‧驅動單元 210‧‧‧Drive unit

220‧‧‧量測單元 220‧‧‧Measurement unit

230‧‧‧計算單元 230‧‧‧Computation unit

C11~C15、C21~C25、C31~C35、C41~C45、C51~C55‧‧‧感應區域 C11~C15, C21~C25, C31~C35, C41~C45, C51~C55‧‧‧ Sensing area

SW1~SW30‧‧‧開關 SW1~SW30‧‧‧ switch

VDD‧‧‧系統電壓 VDD‧‧‧ system voltage

VT1、VT2‧‧‧觸控電壓 VT1, VT2‧‧‧ touch voltage

X、Y‧‧‧軸向 X, Y‧‧‧ axial

Claims (6)

一種補償電壓測定方法，適用於具有多條第一導電條及多條第二導電條的一電阻式觸控面板，其中各該第一導電條重疊該些第二導電條於多個感應區域，該補償電壓測定方法包括：按壓該些感應區域；依序對該些第一導電條施加一壓差；量測該些第二導電條以取得該些感應區域對應一第一軸向的第一觸控電壓；依序對該些第二導電條施加該壓差；量測該些第一導電條以取得該些感應區域對應一第二軸向的第二觸控電壓；以及依據該些感應區域對應的第一觸控電壓計算該些感應區域分別對應的一第一補償電壓，依據該些感應區域對應的第二觸控電壓計算該些感應區域分別對應的一第二補償電壓，其中各該些感應區域對應的第一補償電壓為各該些感應區域對應的第一觸控電壓與對應的一第一參考電壓的差值，各該些感應區域對應的第二補償電壓為各該些感應區域對應的第二觸控電壓與對應的一第二參考電壓的差值，各該感應區域所對應的該第一參考電壓係該感應區域所在的第二導電條上的所有感應區域所測得的第一觸控電壓的平均值，各該感應區域所對應的該第二參考電壓係該感應區域所在的第一導電條上的所有感應區域所測得的第二觸控電壓的平均值。 A resistive voltage measuring method is applicable to a resistive touch panel having a plurality of first conductive strips and a plurality of second conductive strips, wherein each of the first conductive strips overlaps the second conductive strips in the plurality of sensing regions, The method for measuring the compensation voltage includes: pressing the sensing regions; sequentially applying a pressure difference to the first conductive strips; and measuring the second conductive strips to obtain the first sensing regions corresponding to a first axial direction The touch voltage is applied to the second conductive strips in sequence; the first conductive strips are measured to obtain the second touch voltage corresponding to the second axial direction of the sensing regions; and according to the sensing A first compensation voltage corresponding to each of the sensing regions is calculated by the first touch voltage corresponding to the region, and a second compensation voltage corresponding to each of the sensing regions is calculated according to the second touch voltage corresponding to the sensing regions, wherein each The first compensation voltage corresponding to the sensing regions is a difference between a first touch voltage corresponding to each of the sensing regions and a corresponding first reference voltage, and the second compensation voltage corresponding to each of the sensing regions is each The difference between the second touch voltage corresponding to the sensing area and the corresponding second reference voltage, and the first reference voltage corresponding to each sensing area is measured by all the sensing areas on the second conductive strip where the sensing area is located The average value of the first touch voltage, the second reference voltage corresponding to each of the sensing regions is the average of the second touch voltage measured by all the sensing regions on the first conductive strip where the sensing region is located. . 如申請專利範圍第1項所述之補償電壓測定方法，其中依序對該些第一導電條施加該壓差的步驟包括： 依序將該些第一導電條的第一端耦接至一第一電壓；以及同步地依序將該些第一導電條的第二端耦接至一第二電壓。 The method for determining a compensation voltage according to claim 1, wherein the step of sequentially applying the pressure difference to the first conductive strips comprises: And sequentially coupling the first ends of the first conductive strips to a first voltage; and sequentially coupling the second ends of the first conductive strips to a second voltage. 如申請專利範圍第2項所述之補償電壓測定方法，其中依序對該些第二導電條施加該壓差的步驟包括：依序將該些第二導電條的第一端耦接至該第一電壓；以及同步地依序將該些第二導電條的第二端耦接至該第二電壓。 The method for determining a compensation voltage according to the second aspect of the invention, wherein the step of sequentially applying the voltage difference to the second conductive strips comprises: coupling the first ends of the second conductive strips to the a first voltage; and sequentially coupling the second ends of the second conductive strips to the second voltage in sequence. 如申請專利範圍第3項所述之補償電壓測定方法，其中該第一電壓為一系統電壓，該第二電壓為一接地電壓。 The method for determining a compensation voltage according to claim 3, wherein the first voltage is a system voltage, and the second voltage is a ground voltage. 如申請專利範圍第1項所述之補償電壓測定方法，更包括：提供一按壓治具，以按壓該些感應區域；提供一驅動單元，以依序對該些第一導電條施加該電壓，以及依序對該些第二導電條施加該電壓；提供一量測單元，以量測該些第一導電條及該些第二導電條，據此取得該些感應區域對應的第一觸控電壓及對應的第二觸控電壓；以及提供一計算單元，以依據該些感應區域對應的第一觸控電壓計算該些感應區域分別對應的該第一補償電壓，並依據該些感應區域對應的第二觸控電壓計算該些感應區域分別對應的該第二補償電壓。 The method for determining a compensation voltage according to the first aspect of the invention, further comprising: providing a pressing fixture to press the sensing regions; and providing a driving unit to sequentially apply the voltage to the first conductive strips, And applying the voltage to the second conductive strips in sequence; and providing a measuring unit to measure the first conductive strips and the second conductive strips, thereby obtaining the first touch corresponding to the sensing regions a voltage and a corresponding second touch voltage; and a computing unit configured to calculate the first compensation voltage corresponding to the sensing regions according to the first touch voltage corresponding to the sensing regions, and corresponding to the sensing regions The second touch voltage calculates the second compensation voltage corresponding to the sensing regions respectively. 一種電阻式觸控裝置，包括：一觸控面板，具有多條第一導電條及多條第二導電條，該些第一導電條與該些第二導電條相互交錯，且各該第一導電條重疊該些第二導電條於多個感應區域； 一記憶單元，儲存如申請專利範圍第1項所述之補償電壓測定方法所取得的多個第一補償電壓及多個第二補償電壓，該些第一補償電壓及該些第二補償電壓分別對應該些感應區域；以及一偵測單元，耦接該些第一導電條、該些第二導電條及該記憶單元，該偵測單元偵測該些第一導電條或該些第二導電條以取得一觸控電壓，並依據該觸控電壓判斷該些感應區域中何者為一觸碰區域，據此從該記憶單元取得對應該觸碰區域的第一補償電壓或第二補償電壓，依據取得的第一補償電壓或第二補償電壓對該觸控電壓進行補償，其中各該些感應區域對應的第一補償電壓為各該些感應區域對應的第一觸控電壓與對應的一第一參考電壓的差值，各該些感應區域對應的第二補償電壓為各該些感應區域對應的第二觸控電壓與對應的一第二參考電壓的差值，各該感應區域所對應的該第一參考電壓係該感應區域所在的第二導電條上的所有感應區域所測得的第一觸控電壓的平均值，各該感應區域所對應的該第二參考電壓係該感應區域所在的第一導電條上的所有感應區域所測得的第二觸控電壓的平均值。 A resistive touch device includes: a touch panel having a plurality of first conductive strips and a plurality of second conductive strips, wherein the first conductive strips and the second conductive strips are interlaced with each other The conductive strip overlaps the second conductive strips in the plurality of sensing regions; a memory unit that stores a plurality of first compensation voltages and a plurality of second compensation voltages obtained by the compensation voltage measurement method described in claim 1 of the patent application, wherein the first compensation voltages and the second compensation voltages are respectively And the detecting unit is configured to couple the first conductive strips, the second conductive strips, and the memory unit, and the detecting unit detects the first conductive strips or the second conductive lines Obtaining a touch voltage, and determining, according to the touch voltage, which one of the sensing regions is a touch region, and thereby obtaining a first compensation voltage or a second compensation voltage corresponding to the touch region from the memory unit, Compensating the touch voltage according to the obtained first compensation voltage or the second compensation voltage, wherein the first compensation voltage corresponding to each of the sensing regions is a first touch voltage corresponding to each of the sensing regions and a corresponding one a difference between the reference voltages, the second compensation voltage corresponding to each of the sensing regions is a difference between a second touch voltage corresponding to each of the sensing regions and a corresponding second reference voltage, and each of the sensing regions is Corresponding the first reference voltage is an average value of the first touch voltages measured by all the sensing regions on the second conductive strip where the sensing region is located, and the second reference voltage corresponding to each sensing region is the sensing The average of the second touch voltages measured by all the sensing regions on the first conductive strip where the region is located.
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