TWM509379U - High-sensitivity in-cell touch display device - Google Patents
High-sensitivity in-cell touch display device Download PDFInfo
- Publication number
- TWM509379U TWM509379U TW104203521U TW104203521U TWM509379U TW M509379 U TWM509379 U TW M509379U TW 104203521 U TW104203521 U TW 104203521U TW 104203521 U TW104203521 U TW 104203521U TW M509379 U TWM509379 U TW M509379U
- Authority
- TW
- Taiwan
- Prior art keywords
- touch
- sensing
- circuit
- display
- sensitivity
- Prior art date
Links
Landscapes
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
Description
本創作係關於觸控顯示之技術領域，尤指一種高靈敏度之內嵌式觸控顯示裝置。The present invention relates to the technical field of touch display, and more particularly to a high-sensitivity in-cell touch display device.
傳統之觸控顯示裝置為將一觸控面板貼合於一顯示面板上，其工序繁複且材料成本不菲，透光度下降以致顯示品質惡化，且額外的體積與重量種種皆不利於行動電子裝置輕、薄、短小、節能減碳之趨勢與需求。故內嵌式觸控顯示面板已是業界競相投注研發之重點與市場的明日之星。The conventional touch display device is a method in which a touch panel is attached to a display panel, the process is complicated and the material cost is high, the transmittance is lowered to deteriorate the display quality, and the extra volume and weight are not favorable for the mobile electronic device. The device is light, thin, short, energy-saving and carbon-reducing trends and needs. Therefore, the in-cell touch display panel has become the focus of the industry's competitive betting research and development and the market's star of tomorrow.
習知之內嵌式觸控顯示面板為了克服公共電極與感應電極間巨大電容之難題，便將公共電極切割成複數個電極並兼作觸控電極。又為了解決從薄膜電晶體層交連來的顯示訊號造成之嚴重訊號雜訊比惡化問題，只好以分時法在非顯示操作之短暫顯示靜音時段(垂直或水平同步時段)作觸控偵測。請參考LG display公司相關專利文如TW 1456459B、TW 1467298B、TW 201349052A。在上述習知之內 嵌式觸控顯示面板中，當螢幕之解像度提升時，顯示操作便難以騰出足夠時間給觸控使用。同理，當螢幕的尺寸加大時，觸控點數驟增便需要更多時間來掃描觸控感應電極。如此，時區分割成了難解之議題，不僅阻礙了內嵌式觸控螢幕之解像度提升，同時也侷限了螢幕的尺寸大小。因此，習知的內嵌式觸控螢幕仍有改善之空間。In order to overcome the problem of large capacitance between the common electrode and the sensing electrode, the conventional in-cell touch display panel cuts the common electrode into a plurality of electrodes and doubles as a touch electrode. In order to solve the problem of severe signal noise ratio deterioration caused by the display signal from the thin film transistor layer, the touch detection is performed by the time sharing method in the short display silent period (vertical or horizontal synchronization period) of the non-display operation. Please refer to LG display company related patents such as TW 1456459B, TW 1467298B, TW 201349052A. Within the above mentioned In the embedded touch display panel, when the resolution of the screen is increased, it is difficult for the display operation to make enough time for the touch. Similarly, when the size of the screen is increased, the sudden increase in the number of touch points requires more time to scan the touch sensing electrodes. In this way, time zone segmentation becomes an intractable issue, which not only hinders the resolution of the in-cell touch screen, but also limits the size of the screen. Therefore, the conventional in-cell touch screen still has room for improvement.
本創作之目的主要係在提供一高靈敏度之內嵌式觸控顯示裝置，其係利用觸控電路擁有專用之獨立電源迴路，並以公共電極為觸控電路與顯示電路之共同接點，因彼此之間並無電流迴路，故不相互影響各自之相對電位的特性。並輔以反射偏向電極使降低電極間雜散電容、並提升感測距離，又藉此提供各感應暨公共電極相對穩定一致之電荷，使觸控操作對顯示均質性之擾動降至最小，顯示與觸控分區而平行作業，提高觸控電路及顯示電路之操作效率。The purpose of this creation is mainly to provide a high-sensitivity in-cell touch display device, which uses a dedicated independent power supply loop of the touch circuit, and uses a common electrode as a common contact between the touch circuit and the display circuit. There is no current loop between them, so they do not affect each other's characteristics of relative potential. The reflection biasing electrode is used to reduce the stray capacitance between the electrodes and increase the sensing distance, thereby providing a relatively stable and consistent charge of each sensing and common electrode, so that the disturbance of the display operation to the display homogeneity is minimized, and the display and Touching the partition and working in parallel to improve the operating efficiency of the touch circuit and the display circuit.
依據本創作之一特色，本創作提出一種高靈敏度之內嵌式觸控顯示裝置，包括一第一基板、一第二基板、一薄膜電晶體層、一感應暨公共電極層、一顯示控制電路、及一觸控電路。該第二基板與該第一基板呈平行配置，並將一顯示材料層夾置其間。該薄膜電晶體層佈植於該第二基板面向顯示材料層之一面，該薄膜電晶體層包含有複數個薄膜電晶體、複數個畫素電極與複數條閘極驅動線及複 數條源極驅動線。該感應暨公共電極層包含複數個感應暨公共電極，其中，每一個感應暨公共電極係與一個以上之畫素電極相對應，且該複數個感應暨公共電極依序輪流區分為顯示區域與觸控區域，該顯示區域與該觸控區域同時平行地分別執行顯示操作與觸控偵測操作。該顯示控制電路包含有一顯示訊號驅動電路及一顯示電源迴路；該顯示電源迴路係顯示專用或與其他功能電路共用。該觸控電路包含有一獨立之觸控專用電源迴路、及複數個觸控選擇開關電路。該獨立之觸控專用電源迴路於觸控操作模式時，其與該顯示控制電路間無任何電流迴路。該複數個觸控選擇開關電路依序或動態地將部分該複數個感應暨公共電極選定為至少一個感應電極組。其中，該顯示控制電路與該觸控電路各別施加顯示共通訊號至顯示區域之感應暨公共電極，施加觸控感應訊號至觸控區域之感應暨公共電極。According to one of the features of the present invention, the present invention provides a high-sensitivity in-cell touch display device comprising a first substrate, a second substrate, a thin film transistor layer, an inductive and common electrode layer, and a display control circuit. And a touch circuit. The second substrate is disposed in parallel with the first substrate, and a layer of display material is sandwiched therebetween. The thin film transistor layer is disposed on a surface of the second substrate facing the display material layer, wherein the thin film transistor layer comprises a plurality of thin film transistors, a plurality of pixel electrodes and a plurality of gate driving lines and a plurality of Several source drive lines. The sensing and common electrode layer comprises a plurality of sensing and common electrodes, wherein each sensing and common electrode system corresponds to more than one pixel electrode, and the plurality of sensing and common electrodes are sequentially divided into display regions and touches. The control area performs display operation and touch detection operation in parallel with the touch area at the same time. The display control circuit includes a display signal driving circuit and a display power circuit; the display power circuit is dedicated or shared with other functional circuits. The touch circuit includes an independent touch power supply loop and a plurality of touch selection switch circuits. When the independent touch dedicated power supply circuit is in the touch operation mode, there is no current loop between the display and the display control circuit. The plurality of touch selection switch circuits sequentially or dynamically select a portion of the plurality of sensing and common electrodes as at least one sensing electrode group. The display control circuit and the touch circuit respectively apply a sensing common frequency to the sensing and common electrodes of the display area, and apply the touch sensing signal to the sensing and common electrodes of the touch area.
100,900‧‧‧高靈敏度之內嵌式觸控顯示裝置100,900‧‧‧High sensitivity in-cell touch display device
110‧‧‧第一基板110‧‧‧First substrate
120‧‧‧第二基板120‧‧‧second substrate
130‧‧‧顯示材料層130‧‧‧Display material layer
140‧‧‧薄膜電晶體層140‧‧‧Thin film transistor layer
150‧‧‧感應暨公共電極層150‧‧‧Induction and common electrode layer
160‧‧‧遮光層160‧‧‧Lighting layer
170‧‧‧彩色濾光層170‧‧‧Color filter layer
180‧‧‧偏光層180‧‧‧ polarizing layer
141‧‧‧薄膜電晶體141‧‧‧film transistor
151‧‧‧感應暨公共電極151‧‧‧Induction and common electrode
152‧‧‧畫素電極152‧‧‧ pixel electrodes
161‧‧‧遮光線條161‧‧‧ shading lines
163‧‧‧透光區塊163‧‧‧Light block
310‧‧‧顯示控制電路310‧‧‧Display control circuit
330‧‧‧觸控電路330‧‧‧Touch circuit
311‧‧‧顯示訊號驅動電路311‧‧‧Display signal drive circuit
313‧‧‧顯示電源迴路313‧‧‧Display power circuit
331‧‧‧觸控專用電源迴路331‧‧‧Touch dedicated power circuit
333‧‧‧觸控選擇開關電路333‧‧‧Touch selection switch circuit
335‧‧‧觸控感應電路335‧‧‧ touch sensing circuit
337‧‧‧放大器337‧‧Amplifier
350‧‧‧感應電極組350‧‧‧Induction electrode set
370‧‧‧偏向電極組370‧‧‧ bias electrode group
333-6‧‧‧觸控選擇開關電路333-6‧‧‧Touch selection switch circuit
a‧‧‧第一端點A‧‧‧first endpoint
b‧‧‧第二端點B‧‧‧second endpoint
c‧‧‧第三端點C‧‧‧third endpoint
E1~E16‧‧‧感應暨公共電極E1~E16‧‧‧Induction and common electrode
d‧‧‧第四端點D‧‧‧ fourth endpoint
410‧‧‧開關裝置410‧‧‧Switching device
411‧‧‧開關元件411‧‧‧Switching elements
413‧‧‧高阻抗元件413‧‧‧High-impedance components
T11-T14‧‧‧時段T11-T14‧‧‧
335-1、335-2‧‧‧觸控感應電路335-1, 335-2‧‧‧ touch sensing circuit
337-1、337-2‧‧‧放大器337-1, 337-2‧ ‧ amplifier
315,317‧‧‧共同電壓驅動放大器315,317‧‧‧Common voltage drive amplifier
810‧‧‧平均值電路810‧‧‧ average circuit
333-1,333-5‧‧‧觸控選擇開關電路333-1,333-5‧‧‧Touch selection switch circuit
圖1係本創作一種高靈敏度之內嵌式觸控顯示裝置之疊層示意圖。FIG. 1 is a schematic diagram of a stack of a high-sensitivity in-cell touch display device.
圖2係遮光層的示意圖。Figure 2 is a schematic view of a light shielding layer.
圖3係本創作感應暨公共電極層、顯示控制電路及觸控電路的示意圖。FIG. 3 is a schematic diagram of the present sensing and common electrode layer, display control circuit and touch circuit.
圖4係本創作感應暨公共電極層、顯示控制電路及觸控電路的另一示意圖。FIG. 4 is another schematic diagram of the present sensing and common electrode layer, display control circuit and touch circuit.
圖5A、圖5B、圖5C係本創作顯示控制電路及觸控電路的原理之示意。5A, 5B, and 5C are schematic diagrams showing the principle of the present display control circuit and the touch circuit.
圖6A、圖6B、圖6C、圖6D係本創作感應電極組及偏向電極組之工作原理之示意圖。6A, 6B, 6C, and 6D are schematic diagrams showing the working principle of the sensing electrode group and the deflecting electrode group.
圖7係本創作顯示操作與觸碰感應操作之時序的示意圖。Figure 7 is a schematic diagram of the timing of the creation display operation and the touch sensing operation.
圖8係本創作感應暨公共電極層、顯示控制電路及觸控電路的另一示意圖。FIG. 8 is another schematic diagram of the present sensing and common electrode layer, display control circuit and touch circuit.
圖9係本創作一種高靈敏度之內嵌式觸控顯示裝置之另一疊層示意圖。FIG. 9 is another schematic diagram of a stack of a high-sensitivity in-cell touch display device.
圖1係本創作一種高靈敏度之內嵌式觸控顯示裝置100之疊層示意圖。該高靈敏度之內嵌式觸控顯示裝置100具有一第一基板110、一第二基板120、一顯示材料層130、一薄膜電晶體層140、一感應暨公共電極層150、一遮光層160、一彩色濾光層170、及一偏光層180。FIG. 1 is a schematic diagram of a stack of a high-sensitivity in-cell touch display device 100. The high-sensitivity in-cell touch display device 100 has a first substrate 110, a second substrate 120, a display material layer 130, a thin film transistor layer 140, an inductive and common electrode layer 150, and a light shielding layer 160. a color filter layer 170 and a polarizing layer 180.
該第一基板110及該第二基板120較佳為玻璃基板或高分子薄膜基板，該第一基板110及該第二基板120以平行成對之配置將該顯示材料層130夾置於二基板110,120之間。該顯示材料層130為一液晶顯示層。The first substrate 110 and the second substrate 120 are preferably a glass substrate or a polymer film substrate, and the first substrate 110 and the second substrate 120 are disposed in parallel pairs to sandwich the display material layer 130 on the two substrates. Between 110,120. The display material layer 130 is a liquid crystal display layer.
該薄膜電晶體層140佈植於該第二基板120面向顯示材料層130之一面。該薄膜電晶體層140包含有複數個薄膜電晶體141、複數個畫素電極與複數條閘極驅動線及複數條源極驅動線。該複數條閘極驅動線及該複數條源極驅 動線定義出複數個畫素區域，每一個畫素區域係對應至一個透光區塊。The thin film transistor layer 140 is implanted on one surface of the second substrate 120 facing the display material layer 130. The thin film transistor layer 140 includes a plurality of thin film transistors 141, a plurality of pixel electrodes, a plurality of gate driving lines, and a plurality of source driving lines. The plurality of gate drive lines and the plurality of source drives The moving line defines a plurality of pixel regions, each of which corresponds to a light transmissive block.
薄膜電晶體141的閘極連接至一條閘極驅動線(圖未示)，依驅動電路設計的不同，薄膜電晶體141的汲/源極連接至一條源極驅動線(圖未示)，薄膜電晶體141的源/汲極連接至對應的一個畫素區域的畫素電極152。該畫素電極152與一對應的感應暨公共電極151形成一電容。藉由改變電容之電壓，進而改變液晶偏轉角度，由於閘極驅動線(gate line)及源極驅動線(source line)，係一般平面顯示器所具有之配置，故未於圖式中顯示。The gate of the thin film transistor 141 is connected to a gate driving line (not shown). The germanium/source of the thin film transistor 141 is connected to a source driving line (not shown) depending on the design of the driving circuit. The source/drain of the transistor 141 is connected to the pixel electrode 152 of the corresponding one pixel region. The pixel electrode 152 forms a capacitance with a corresponding sensing and common electrode 151. By changing the voltage of the capacitor and thus changing the deflection angle of the liquid crystal, since the gate line and the source line are the configurations of the general flat panel display, they are not shown in the drawings.
該感應暨公共電極層150包含複數個感應暨公共電極(Vcom and sensing electrode)151，以感應一外部物件之觸碰或近接。其中，每一個感應暨公共電極151係與一個以上之畫素電極相對應，且該複數個感應暨公共電極151依序輪流區分為顯示區域與觸控區域，該顯示區域與該觸控區域同時平行地分別執行顯示操作與觸控偵測操作。於圖1中，其係IPS(In panel switching)面板為例說明，故該感應暨公共電極151係設置於薄膜電晶體141的側邊。且由於係IPS面板之故，該感應暨公共電極層150係佈植於該第二基板120與該顯示材料層130之間。The sensing and common electrode layer 150 includes a plurality of Vcom and sensing electrodes 151 to sense the touch or proximity of an external object. Each of the sensing and common electrodes 151 corresponds to one or more pixel electrodes, and the plurality of sensing and common electrodes 151 are sequentially divided into a display area and a touch area, and the display area is simultaneously with the touch area. The display operation and the touch detection operation are performed in parallel. In FIG. 1 , an IPS (In panel switching) panel is taken as an example. Therefore, the sensing and common electrode 151 is disposed on the side of the thin film transistor 141 . The sensing and common electrode layer 150 is implanted between the second substrate 120 and the display material layer 130 due to the IPS panel.
該遮光層160係位於該第一基板110之面對該顯示材料層130一側的表面。圖2係遮光層的示意圖。如圖2所示，該遮光層160係由複數條遮光線條161所構成。該複數條遮光線條161設置於一第一方向(X-軸方向)及一第二 方向(Y-軸方向)，以形成複數個透光區塊163。該等複數條遮光線161係由黑色絕緣材質所構成。該複數條遮遮光線161係依該薄膜電晶體層140的閘極驅動線與源極驅動線的相對位置而設置。該第一方向與該第二方向係互相垂直，故該遮光層160在一般習知之平面顯示器中又稱為黑矩陣(black matrix)。The light shielding layer 160 is located on a surface of the first substrate 110 facing the side of the display material layer 130. Figure 2 is a schematic view of a light shielding layer. As shown in FIG. 2, the light shielding layer 160 is composed of a plurality of light shielding lines 161. The plurality of light shielding lines 161 are disposed in a first direction (X-axis direction) and a second The direction (Y-axis direction) is to form a plurality of light-transmissive blocks 163. The plurality of light-shielding lines 161 are made of a black insulating material. The plurality of shading lines 161 are disposed according to the relative positions of the gate driving lines and the source driving lines of the thin film transistor layer 140. The first direction and the second direction are perpendicular to each other. Therefore, the light shielding layer 160 is also referred to as a black matrix in a conventional flat display.
該彩色濾光層170位於該遮光層160之面向該顯示材料層130一側。該偏光層180位於該第一基板110之面向該顯示材料層130之另一側。The color filter layer 170 is located on a side of the light shielding layer 160 facing the display material layer 130. The polarizing layer 180 is located on the other side of the first substrate 110 facing the display material layer 130.
該高靈敏度之內嵌式觸控顯示裝置100更包含一顯示控制電路310及一觸控電路330。圖3係本創作感應暨公共電極層150、顯示控制電路310及觸控電路330的示意圖。如圖3所示，該感應暨公共電極層150包含16個感應暨公共電極151，此僅為說明之便，並不以此為限。The high-sensitivity in-cell touch display device 100 further includes a display control circuit 310 and a touch circuit 330. FIG. 3 is a schematic diagram of the present sensing and common electrode layer 150, the display control circuit 310, and the touch circuit 330. As shown in FIG. 3, the sensing and common electrode layer 150 includes 16 sensing and common electrodes 151, which are for illustrative purposes only and are not limited thereto.
該顯示控制電路310具有一顯示訊號驅動電路311及一顯示電源迴路313。The display control circuit 310 has a display signal driving circuit 311 and a display power circuit 313.
該觸控電路330包含一獨立之觸控專用電源迴路331、複數個觸控選擇開關電路333、一觸控感應電路335、及至少一增益大於零之放大器337。該獨立之觸控專用電源迴路331於觸控操作模式時，其與該顯示控制電路310間無任何電流迴路。該複數個觸控選擇開關電路333依序或動態地將該複數個感應暨公共電極151區分為至少一個感應電極組、及至少一個偏向電極組。其中，該顯示控制電路310施加顯示共通訊號(Vcom)至顯示區域之感應暨公共電極151，該 觸控電路330施加觸控感應訊號至觸控區域之感應暨公共電極151。The touch circuit 330 includes a separate touch-only power supply circuit 331, a plurality of touch selection switch circuits 333, a touch sensing circuit 335, and at least one amplifier 337 having a gain greater than zero. When the independent touch-only power supply circuit 331 is in the touch operation mode, there is no current loop between the display control circuit 310 and the display control circuit 310. The plurality of touch selection switch circuits 333 sequentially or dynamically divide the plurality of sensing and common electrodes 151 into at least one sensing electrode group and at least one deflection electrode group. The display control circuit 310 applies a sensing and common electrode 151 that displays a common communication number (Vcom) to the display area. The touch circuit 330 applies a touch sensing signal to the sensing and common electrode 151 of the touch area.
該複數個觸控選擇開關電路333依序或動態地將該複數個感應暨公共電極151區分為至少一個感應電極組350、及至少一個偏向電極組370。如圖3所示，觸控選擇開關電路333-6的第一端點a與第三端點c連接，其餘的觸控選擇開關電路333的第一端點a與第二端點b連接，藉此，感應電極組則包含感應暨公共電極151-E6，偏向電極組則包含感應暨公共電極151(E1~E5、E7~E16)。The plurality of touch selection switch circuits 333 sequentially or dynamically divide the plurality of sensing and common electrodes 151 into at least one sensing electrode group 350 and at least one deflection electrode group 370. As shown in FIG. 3, the first end point a of the touch selection switch circuit 333-6 is connected to the third end point c, and the first end point a of the remaining touch selection switch circuit 333 is connected to the second end point b. Thereby, the sensing electrode group includes the sensing and common electrode 151-E6, and the biasing electrode group includes the sensing and common electrode 151 (E1~E5, E7~E16).
由圖3所示，該複數個觸控選擇開關電路333將選定之感應電極組350上的感應暨公共電極151(E6)之電氣信號交連到相對應之至少一個增益大於零的放大器337的輸入端，並將該至少一個放大器337輸出的反射偏向信號交連到該偏向電極組370的感應暨公共電極151(E1~E5、E7~E16)。亦即，感應電極組的感應暨公共電極151(E6)與該觸控感應電路335電性連接，以進行觸碰感測。偏向電極組的感應暨公共電極151(E1~E5、E7~E16)則與該至少一增益大於零之放大器337的輸出端電性連接，以接收該至少一個放大器337輸出的反射偏向信號。As shown in FIG. 3, the plurality of touch selection switch circuits 333 interconnect the electrical signals of the sense and common electrodes 151 (E6) on the selected sense electrode group 350 to the corresponding input of at least one amplifier 337 having a gain greater than zero. And transducing the reflection bias signal outputted by the at least one amplifier 337 to the sensing and common electrode 151 (E1~E5, E7~E16) of the deflection electrode group 370. That is, the sensing and common electrode 151 (E6) of the sensing electrode group is electrically connected to the touch sensing circuit 335 for touch sensing. The sensing and common electrodes 151 (E1~E5, E7~E16) of the biasing electrode group are electrically connected to the output end of the at least one amplifier 337 having a gain greater than zero to receive the reflected deflection signal output by the at least one amplifier 337.
於圖3中，感應電極組350僅包含一個感應暨公共電極151(E6)，於其他實施例中，感應電極組350亦可包含多個感應暨公共電極151。如圖3所示，該偏向電極組370係由其相對應之感應電極組350的感應暨公共電極151(E6)以外之所有感應暨公共電極151(E1~E5、E7~E16)所組 成。In FIG. 3, the sensing electrode group 350 includes only one sensing and common electrode 151 (E6). In other embodiments, the sensing electrode group 350 may also include a plurality of sensing and common electrodes 151. As shown in FIG. 3, the deflecting electrode group 370 is composed of all the sensing and common electrodes 151 (E1~E5, E7~E16) other than the sensing and common electrode 151 (E6) of the corresponding sensing electrode group 350. to make.
該顯示訊號驅動電路311及該顯示電源迴路313的接地端為一第一接地(GDISP )。該顯示訊號驅動電路311連接至該薄膜電晶體層140的複數條閘極驅動線及複數條源極驅動線，以進行影像之顯示。The display signal driving circuit 311 and the ground terminal of the display power circuit 313 are a first ground (G DISP ). The display signal driving circuit 311 is connected to the plurality of gate driving lines and the plurality of source driving lines of the thin film transistor layer 140 for displaying images.
圖4係本創作感應暨公共電極層150、顯示控制電路310及觸控電路330的另一示意圖。該觸控電路330更可包含一開關裝置410。其中，該開關裝置410係為一可切換兩端導通與否之開關元件411，或是包括該開關元件411及跨接於其兩端之一高阻抗元件413，於本實施例中，該開關裝置410係包括有該開關元件411及跨接於其兩端之高阻抗元件413。FIG. 4 is another schematic diagram of the present sensing and common electrode layer 150, the display control circuit 310, and the touch circuit 330. The touch circuit 330 further includes a switching device 410. The switching device 410 is a switching element 411 that can switch between two ends, or includes the switching element 411 and a high-impedance element 413 connected across the two ends. In this embodiment, the switch The device 410 includes the switching element 411 and a high impedance element 413 across the two ends thereof.
該觸控電路330係由一不同於該顯示電源迴路313之觸控專用電源迴路331供電，該觸控電路330及該觸控專用電源迴路331的接地端為一第二接地(GTH )。該觸控感應電路335連接至該複數個感應暨公共電極151，以驅動該感應暨公共電極151，俾感應手指之接觸。其中，當進行觸控感應操作時，該顯示電源迴路313及該觸控專用電源迴路331之間無直接之電流迴路，或經由一高阻抗元件形成微弱之電流迴路。The touch circuit 330 is powered by a touch-specific power supply circuit 331 different from the display power circuit 313. The touch circuit 330 and the ground of the touch-only power supply circuit 331 are a second ground (G TH ). The touch sensing circuit 335 is connected to the plurality of sensing and common electrodes 151 to drive the sensing and common electrode 151 to sense the contact of the finger. When the touch sensing operation is performed, there is no direct current loop between the display power supply circuit 313 and the touch dedicated power supply circuit 331, or a weak current loop is formed through a high impedance component.
該獨立之觸控專用電源迴路331於非觸控操作模式時，係經由特定開關裝置410交連至該顯示電源迴路313及顯示控制電路310，俾傳遞同步訊息與觸控資訊或作電源 之充電。When the independent touch-only power supply circuit 331 is in the non-touch operation mode, it is connected to the display power supply circuit 313 and the display control circuit 310 via the specific switching device 410, and transmits the synchronization message and the touch information or the power supply. Charging.
該開關裝置410係連接於該顯示電源迴路313的接地端及該觸控專用電源迴路331的接地端之間，用以控制該顯示電源迴路313的接地端及該觸控專用電源迴路331的接地端之斷開或連接。亦即當進行觸控感應操作時，該顯示電源迴路313及該觸控專用電源迴路331之間係呈斷開而無共同之電流迴路。當非進行觸控感應操作時，該顯示電源迴路313及該觸控專用電源迴路331之間係呈連接而有共同之電流迴路。The switching device 410 is connected between the grounding end of the display power supply circuit 313 and the grounding end of the touch-dedicated power supply circuit 331 for controlling the grounding end of the display power supply circuit 313 and the grounding of the touch-dedicated power supply circuit 331 Disconnect or connect. That is, when the touch sensing operation is performed, the display power supply circuit 313 and the touch dedicated power supply circuit 331 are disconnected without a common current loop. When the touch sensing operation is not performed, the display power supply circuit 313 and the touch dedicated power supply circuit 331 are connected to each other and have a common current loop.
該開關裝置410至少包含一開關元件411，其為電晶體開關元件。該開關裝置或者更包含一高阻抗元件413，該高阻抗元件413係跨接於該開關元件411，以防止該顯示控制電路310與該觸控電路330之間形成靜電位差。該高阻抗元件413可為100KΩ以上的電阻。該開關元件411之閉合或斷開係由該觸控感應電路335控制。在其它實施例中，該開關元件241之閉合或斷開可由顯示訊號驅動電路311所控制。如圖4所示，該偏向電極組370係由其相對應之感應電極組350周邊之複數個感應暨公共電極151(E1~E3,E5,E7,E9~E11)所組成。該偏向電極組370係同時電氣連結至觸控電路330之反射偏向信號與顯示控制電路310之第一顯示共通信號Vcom1。其餘感應暨公共電極151(E4、E8、E12、E13~E16)可組合成另一偏向電極組，其係同時電氣連結至觸控電路330之第二接地GTH 與顯示控制電路310之第 二顯示共通信號Vcom2。其中，Vcom1與Vcom2係同電位信號；且由於Vcom1與Vcom2分別由各自獨立之共同電壓驅動放大器317、315輸出，故由觸控電路端看去可視為開路(無電流迴路)。如圖4所示，相對於感應暨公共電極151(E4、E8、E12、E13~E16)的另一偏向電極組的觸控選擇開關電路333，觸控選擇開關電路333的第一端點a與第四端點d連接。The switching device 410 includes at least one switching element 411, which is a transistor switching element. The switching device further includes a high-impedance element 413 connected across the switching element 411 to prevent electrostatic potential difference between the display control circuit 310 and the touch circuit 330. The high-impedance element 413 can be a resistance of 100 KΩ or more. The closing or opening of the switching element 411 is controlled by the touch sensing circuit 335. In other embodiments, the closing or opening of the switching element 241 can be controlled by the display signal driving circuit 311. As shown in FIG. 4, the deflecting electrode group 370 is composed of a plurality of sensing and common electrodes 151 (E1~E3, E5, E7, E9~E11) corresponding to the sensing electrode group 350. The deflecting electrode group 370 is electrically coupled to the reflective bias signal of the touch control circuit 330 and the first display common signal Vcom1 of the display control circuit 310. The remaining sensing and common electrodes 151 (E4, E8, E12, E13~E16) can be combined into another deflecting electrode group, which is electrically connected to the second grounding GTH of the touch circuit 330 and the second of the display control circuit 310. The common signal Vcom2 is displayed. Among them, Vcom1 and Vcom2 are the same potential signal; and since Vcom1 and Vcom2 are respectively driven by independent common voltage driving amplifiers 317 and 315, it can be regarded as an open circuit (no current loop) from the touch circuit end. As shown in FIG. 4, the touch selection switch circuit 333 of the other bias electrode group of the sensing and common electrode 151 (E4, E8, E12, E13~E16), the first end point a of the touch selection switch circuit 333 Connected to the fourth endpoint d.
圖5A係本創作顯示控制電路310及觸控電路330的原理之示意。其中左側電流迴路電路之A點與右側電流迴路電路之B 點係電氣連接在一起，亦即兩不共地且不共電源之電路之間僅有一共點(A/B)；即A點可視同為B點；如圖5A所示，該A點相對於第二接地(GTH )的電壓為(9V*R2)/(R1+R2)，該B點相對於第一接地(GDISP )的電壓為(5V*R4)/(R3+R4)。亦即右側電路之電源5V對左側電路並無影響，同時左側電路之電源9V對右側電路亦無影響。FIG. 5A is a schematic diagram of the principle of the present display control circuit 310 and the touch circuit 330. The point A of the left current loop circuit is electrically connected with the point B of the right current loop circuit, that is, there is only one common point (A/B) between the circuits of the two non-common and non-common power sources; that is, the point A is visible. The same as point B; as shown in FIG. 5A, the voltage of the point A relative to the second ground (G TH ) is (9V*R2) / (R1 + R2), and the point B is relative to the first ground (G DISP ) The voltage is (5V*R4)/(R3+R4). That is, the power supply 5V of the right circuit has no effect on the left side circuit, and the power supply 9V of the left side circuit has no effect on the right side circuit.
圖5B係本創作顯示控制電路310及觸控電路330的原理之另一示意圖。如圖5B所示，左右兩側不共地之電路僅有一點相連接(C點即D點)，左側電路包含有一交流訊號源Vt，其係一三角波訊號；右側電路包含有另一交流訊號源Vd，其係一正弦波訊號；由於左右兩電路之間並無共同電流迴路，故示波器A相對於第二接地點(GTH )在C點所量測到的為一三角波訊號，其振幅為(Vt*Z2)/(Z1+Z2)，其中並無右側正弦波訊號源的成份。同樣的示波器B相對於第一接地點(GDISP )在D點所量測到的為一正弦波訊號，其 振幅為(Vd*Z4)/(Z3+Z4)，其中並無左側三角波訊號源的成份。亦即左右兩側電路中的交流訊號彼此不會互相影響。FIG. 5B is another schematic diagram of the principle of the present display control circuit 310 and the touch circuit 330. As shown in FIG. 5B, the circuits on the left and right sides are not connected to each other (C point is D point), and the left circuit includes an AC signal source Vt, which is a triangular wave signal; the right circuit includes another AC signal. The source Vd is a sinusoidal signal; since there is no common current loop between the left and right circuits, the oscilloscope A measures a triangular wave signal at the point C relative to the second ground point (G TH ), and its amplitude It is (Vt*Z2)/(Z1+Z2), and there is no component of the source of the right sine wave signal. The same oscilloscope B measures a sine wave signal at point D with respect to the first ground point (G DISP ), and its amplitude is (Vd*Z4)/(Z3+Z4), and there is no left triangle wave signal source. Ingredients. That is, the AC signals in the left and right circuits do not affect each other.
圖5C係本創作顯示控制電路310及觸控電路330的原理之又一示意圖。如圖5C所示左右兩側電路不共地，無共同電流迴路且無任何連接點。Ct為左側電路的E點與右側電路的F點之間的雜散電容，Ctdg為左側電路之地點(第二接地點)與右側電路之地點(第一接地點)之間的雜散電容。左側電路包含有一交流訊號源Vt，其係一三角波訊號；右側電路包含有一交流訊號源Vd，其係一正弦波訊號；當Ctdg極小時，其阻抗幾近無限大，故示波器A相對於第二接地(GTH )在E點所量測到的為一三角波訊號，其振幅為(Vt*Z2)/(Z1+Z2)，其中並無右側正弦波訊號源的成份；同樣的示波器B相對於第一接地點(GDISP )在F點所量測到的為一正弦波訊號，其振幅為(Vd*Z4)/(Z3+Z4)，其中並無左側三角波訊號的成份。亦即左右兩側電路中的交流訊號彼此不會互相影響。FIG. 5C is still another schematic diagram of the principle of the present display control circuit 310 and the touch circuit 330. As shown in FIG. 5C, the left and right circuits are not common, and there is no common current loop and no connection point. Ct is the stray capacitance between the point E of the left circuit and the point F of the right circuit, and Ctdg is the stray capacitance between the location of the left circuit (the second ground point) and the location of the right circuit (the first ground point). The left circuit includes an AC signal source Vt, which is a triangular wave signal; the right circuit includes an AC signal source Vd, which is a sine wave signal; when Ctdg is extremely small, its impedance is almost infinite, so the oscilloscope A is opposite to the second Grounding (G TH ) measured at point E is a triangular wave signal with an amplitude of (Vt*Z2)/(Z1+Z2), where there is no component of the right sine wave signal source; the same oscilloscope B is relative to The first ground point (G DISP ) measures a sine wave signal at point F, and its amplitude is (Vd*Z4)/(Z3+Z4), and there is no component of the left triangle wave signal. That is, the AC signals in the left and right circuits do not affect each other.
在圖5B與圖5C中，左右兩側之交流訊號源Vt與Vd可代表無共同電流迴路的兩個電路各別之作動訊號以及疊加在雙方電源上的雜訊，其可能為各種頻率與各式波形訊號之組合，圖例中的三角波與正弦波只是為方便描述說明，並非以此為限。In FIG. 5B and FIG. 5C, the AC signal sources Vt and Vd on the left and right sides can represent the respective actuation signals of the two circuits without the common current loop and the noise superimposed on the power sources of both sides, which may be various frequencies and The combination of the waveform signals, the triangular wave and the sine wave in the legend are only for convenience of description, not limited to this.
由圖5A、圖5B與圖5C可知，當進行觸控感應操作時，由於該顯示電源迴路313及該觸控專用電源迴路 331之間無共同之電流迴路，因此該顯示控制電路310上的訊號或雜訊不會對該觸控電路330造成影響，因此可降低該觸控電路330上的雜訊，進而提高該觸控電路330觸控感應操作時的靈敏性與準確度。同理，加諸各感應暨公共電極的觸控信號也不會干擾顯示控制電路310，亦不影響各共同電極相對顯示電極電位之均值性。As shown in FIG. 5A, FIG. 5B and FIG. 5C, when the touch sensing operation is performed, the display power supply circuit 313 and the touch dedicated power supply circuit are There is no common current loop between the 331, so the signal or noise on the display control circuit 310 does not affect the touch circuit 330, so the noise on the touch circuit 330 can be reduced, thereby improving the touch. The sensitivity and accuracy of the circuit 330 during touch sensing operation. Similarly, the touch signals applied to the sensing and common electrodes do not interfere with the display control circuit 310, nor affect the mean value of the common electrodes relative to the display electrode potential.
圖6A、圖6B、圖6C、圖6D係本創作感應電極組350及偏向電極組370之工作原理之示意圖。如圖6A所示，當感應暨公共電極151(E6)上有觸控感應訊號、感應暨公共電極151(E5、E7)沒有觸控感應訊號時，電力線由感應暨公共電極151(E6)射向感應暨公共電極151(E5、E7)。如圖6B所示，當感應暨公共電極151(E6)上有觸控感應訊號、感應暨公共電極151(E5、E7)有與感應暨公共電極151(E6)同極性之觸控感應訊號時，基於同性相斥之原理，感應暨公共電極151(E6)發出之電力線受感應暨公共電極151(E5、E7)發出之電力線排斥而向更遠處延伸。如圖6C所示，當感應暨公共電極151(E6)上有觸控感應訊號、感應暨公共電極151(E5、E7)有較大觸控感應訊號時，電力線由感應暨公共電極151(E5、E7)射向感應暨公共電極151(E6)。如圖6D所示，當感應暨公共電極151(E6)上有觸控感應訊號、感應暨公共電極151(E5、E7)有同極性之較小觸控感應訊號時，電力線由感應暨公共電極151(E6、E5、E7)往外射出，且電力線被感應暨公共電極151(E7)的觸控感應訊號推擠而向感應暨公共電極151(E5)方向偏過去，因此感應暨公共電極151(E6)發出 之電力線受到偏轉而向感應暨公共電極151(E5)上方延伸。6A, 6B, 6C, and 6D are schematic diagrams showing the operation of the sensing electrode group 350 and the deflecting electrode group 370. As shown in FIG. 6A, when there is no touch sensing signal on the sensing and common electrode 151 (E6), and the sensing and common electrode 151 (E5, E7) has no touch sensing signal, the power line is shot by the sensing and common electrode 151 (E6). To the induction and common electrode 151 (E5, E7). As shown in FIG. 6B, when the sensing and common electrode 151 (E6) has the touch sensing signal, the sensing and common electrode 151 (E5, E7) has the same polarity touch sensing signal as the sensing and common electrode 151 (E6). Based on the principle of homosexual repulsive, the power line from the induction and common electrode 151 (E6) is repelled by the power line of the induction and common electrode 151 (E5, E7) to extend further. As shown in FIG. 6C, when the touch sensing signal, the sensing and common electrode 151 (E5, E7) have large touch sensing signals on the sensing and common electrode 151 (E6), the power line is connected by the sensing and common electrode 151 (E5). , E7) Shooting induction and common electrode 151 (E6). As shown in FIG. 6D, when the sensing and common electrode 151 (E6) has a touch sensing signal, and the sensing and common electrode 151 (E5, E7) has a small touch sensing signal of the same polarity, the power line is controlled by the common electrode. 151 (E6, E5, E7) is shot out, and the power line is pushed by the touch sensing signal of the sensing and common electrode 151 (E7) to be biased toward the sensing and common electrode 151 (E5), so the sensing and common electrode 151 ( E6) issued The power line is deflected to extend over the inductive and common electrode 151 (E5).
由圖6B可知，當該複數個觸控選擇開關電路333將選定之感應電極組350上的感應暨公共電極151(E6)之電氣信號交連到相對應之該至少一個增益大於零的放大器337的輸入端，並將該至少一個放大器337輸出的反射偏向信號交連到該偏向電極組370的感應暨公共電極151(E1~E5、E7~E16)時，若增益G1=G2=1，則感應暨公共電極151(E6)與感應暨公共電極151(E1~E5、E7~E16)有相同的電氣訊號，因此，感應暨公共電極151(E6)與感應暨公共電極151(E1~E5、E7~E16)之間的等效電容為零，因此當感應暨公共電極151(E1~E5、E7~E16)進行顯示操作、且當感應暨公共電極151(E6)進行觸碰感應操作時，可消除經由感應暨公共電極151(E1~E5、E7~E16)與感應暨公共電極151(E6)之間雜散電容交連來的雜訊。同時，感應暨公共電極151(E6)其上的電力線會被向上提昇，因此其感測範圍變大，進而可提高該觸控電路330觸控感應操作時的靈敏性與準確度。該至少一個增益大於零的放大器337之增益值為可程式調控。As shown in FIG. 6B, when the plurality of touch selection switch circuits 333 interconnect the electrical signals of the sensing and common electrodes 151 (E6) on the selected sensing electrode group 350 to the corresponding amplifiers 337 of the at least one gain greater than zero. The input terminal and the reflection bias signal outputted by the at least one amplifier 337 are connected to the sensing and common electrode 151 (E1~E5, E7~E16) of the deflecting electrode group 370, and if the gain G1=G2=1, the sensing cum The common electrode 151 (E6) has the same electrical signal as the induction and common electrode 151 (E1~E5, E7~E16), therefore, the induction and common electrode 151 (E6) and the induction and common electrode 151 (E1~E5, E7~) The equivalent capacitance between E16) is zero, so when the sensing and common electrode 151 (E1~E5, E7~E16) performs the display operation, and when the sensing and common electrode 151 (E6) performs the touch sensing operation, the elimination can be eliminated. The noise is connected through the stray capacitance between the induction and common electrode 151 (E1~E5, E7~E16) and the induction and common electrode 151 (E6). At the same time, the power line on the sensing and common electrode 151 (E6) is lifted upward, so that the sensing range is increased, thereby improving the sensitivity and accuracy of the touch sensing operation of the touch circuit 330. The gain value of the at least one amplifier 337 having a gain greater than zero is programmable.
圖7係本創作顯示操作與觸碰感應操作之時序的示意圖。為方便說明起見，將感應暨公共電極151(E1~E4)分成為列1、將感應暨公共電極151(E5~E8)分成為列2、將感應暨公共電極151(E9~E12)分成為列3、將感應暨公共電極151(E13~E16)分成為列4。如圖7所示，於時段T11-T14時，列2係輪流進行觸碰感應操作與顯示操作，列1、列3、列4則同時進行顯示操作。於時段T12時，感應暨公共電極151(E6) 係進行觸碰感應操作，此時，觸控選擇開關電路333-6的第一端點a與第三端點c連接，其餘的觸控選擇開關電路333的第一端點a與第二端點b連接。即在T12時段僅感應暨公共電極151(E6)所涵蓋之區域為觸控區域，其餘感應暨公共電極151(E1~E5與E7~E15)為顯示區域。此時感應暨公共電極151(E6)僅有觸控感應電路施予的觸控信號，其餘感應暨公共電極151(E1~E5與E7~E16)同時有顯示控制電路施予的共同電壓訊號Vcom與觸控電路施與的反射偏向訊號。於本創作中，由於該顯示電源迴路313及該觸控專用電源迴路331之間無共同之電流迴路，故同時施加在感應暨公共電極151(E1~E5、E7~E16)上的共同電壓訊號Vcom與反射偏向訊號互不干涉，即顯示操作與觸碰感應操作可同時進行而不會互相影響。在T11時段只有感應暨公共電極151(E5)作觸控感應操作，其餘感應暨公共電極151(E1~E4與E6~E16)皆作顯示操作兼反射偏向電極。在T13時段僅有感應暨公共電極151(E7)作觸控感應操作。在T14時段僅感應暨公共電極151(E8)作觸控感應操作。同理可任意規劃複數個感應暨公共電極151為感應電極組350(E1~E2，E3~E4...兩兩一組或E1~E2及E5~E6，E3~E4及E7~E8...每四個一組等等)，使該感應電極組350內之觸控暨公共電極151相對應之該等選擇開關電路333之接點a都接至接點c之觸控信號，作觸控偵測操作。其餘之觸控暨公共電極之相對應選擇開關電路之a接點都接到b接點，作顯示操作兼反射偏向電極。相關之觸控與顯示區域之分區，其面積大小及偵測順序可依序輪流或動態分區以提升報點率並節 約能源之消耗。Figure 7 is a schematic diagram of the timing of the creation display operation and the touch sensing operation. For convenience of explanation, the induction and common electrodes 151 (E1~E4) are divided into columns 1, the induction and common electrodes 151 (E5~E8) are divided into columns 2, and the induction and common electrodes 151 (E9 to E12) are divided. In column 3, the induction and common electrode 151 (E13 to E16) is divided into column 4. As shown in FIG. 7, during the period T11-T14, the column 2 performs the touch sensing operation and the display operation in turn, and the column 1, column 3, and column 4 simultaneously perform the display operation. At time T12, induction and common electrode 151 (E6) The touch sensing operation is performed. At this time, the first end point a of the touch selection switch circuit 333-6 is connected to the third end point c, and the first end point a and the second end of the remaining touch selection switch circuit 333 are connected. Point b is connected. That is, in the T12 period, only the area covered by the sensing and common electrode 151 (E6) is the touch area, and the remaining sensing and common electrodes 151 (E1~E5 and E7~E15) are display areas. At this time, the sensing and common electrode 151 (E6) only has the touch signal applied by the touch sensing circuit, and the other sensing and common electrodes 151 (E1~E5 and E7~E16) have the common voltage signal Vcom applied by the display control circuit. A reflection bias signal applied to the touch circuit. In the present creation, since there is no common current loop between the display power supply circuit 313 and the touch dedicated power supply circuit 331, the common voltage signal applied to the induction and common electrodes 151 (E1~E5, E7~E16) is simultaneously applied. Vcom and the reflection bias signal do not interfere with each other, that is, the display operation and the touch sensing operation can be performed simultaneously without affecting each other. In the T11 period, only the sensing and common electrode 151 (E5) is used for touch sensing operation, and the other sensing and common electrodes 151 (E1~E4 and E6~E16) are used for display operation and reflective deflection electrodes. In the T13 period, only the sensing and common electrode 151 (E7) is used for the touch sensing operation. Only the sensing and common electrode 151 (E8) is used for the touch sensing operation during the T14 period. Similarly, a plurality of sensing and common electrodes 151 can be arbitrarily set as the sensing electrode group 350 (E1~E2, E3~E4...two or two groups or E1~E2 and E5~E6, E3~E4 and E7~E8.. Each of the four groups and the like, so that the contact a of the selection switch circuit 333 corresponding to the touch and common electrode 151 in the sensing electrode group 350 is connected to the touch signal of the contact c, and touches Control detection operation. The other contacts of the corresponding touch and common electrodes of the selection switch circuit are connected to the b contact for display operation and reflective deflection electrodes. The area of the touch and display area, the size and detection order of the touch and display areas can be rotated or dynamically partitioned to improve the report rate and section. About the consumption of energy.
請參考圖3，該複數個觸控選擇開關電路333為場效電晶體電路，其係實現(implement)在該觸控電路330內。於其他實施例中，該複數個觸控選擇開關電路333為薄膜電晶體電路，其係實現(implement)在該感應暨公共電極層150內。Referring to FIG. 3 , the plurality of touch selection switch circuits 333 are field effect transistor circuits, which are implemented in the touch circuit 330 . In other embodiments, the plurality of touch selection switch circuits 333 are thin film transistor circuits that are implemented in the induction and common electrode layer 150.
圖8係本創作感應暨公共電極層150、顯示控制電路310及觸控電路330的另一示意圖。如圖8所示，該感應暨公共電極層150包含八個感應暨公共電極151，並分為列1及列2。該觸控電路330包含一獨立之觸控專用電源迴路331、複數個觸控選擇開關電路333、兩觸控感應電路335-1、335-2、至少一增益大於零之放大器337-1、337-2、及一平均值電路810。FIG. 8 is another schematic diagram of the present sensing and common electrode layer 150, the display control circuit 310, and the touch circuit 330. As shown in FIG. 8, the sensing and common electrode layer 150 includes eight sensing and common electrodes 151 and is divided into columns 1 and 2. The touch control circuit 330 includes a separate touch-only power supply circuit 331, a plurality of touch selection switch circuits 333, two touch sensing circuits 335-1, 335-2, and at least one amplifier 337-1, 337 with gain greater than zero. -2, and an average value circuit 810.
如圖8所示，其可同時由列1及及列2進行觸碰感應操作。觸控選擇開關電路333-1及333-5的第一端點a與第三端點c連接，其餘的觸控選擇開關電路333的第一端點a與第二端點b連接，列1的感應暨公共電極151(E1)及列2的感應暨公共電極151(E5)則可進行觸碰感應操作。此時感應暨公共電極151(E1)為第一感應電極組，且感應暨公共電極151(E2~E4)組成第一偏向電極組與其對應；感應暨公共電極151(E5)為第二感應電極組，且感應暨公共電極151(E6~E8)組成第二偏向電極組與其對應。在圖8中，第一偏向電極組(E2~E4)與第一感應電極組(E1)畫在同一列，第二偏向電極組(E6~E8)與第二感應電極組(E5)畫在同一列僅為繪圖說明方 便，並不以此為限。實務上，偏向電極組之感應暨公共電極當以環繞其相對應之感應電極組為較佳配置。As shown in FIG. 8, it can perform touch sensing operation by column 1 and column 2 at the same time. The first end point a of the touch selection switch circuits 333-1 and 333-5 is connected to the third end point c, and the first end point a of the remaining touch selection switch circuit 333 is connected with the second end point b, column 1 The sensing and common electrode 151 (E1) and the column 2 sensing and common electrode 151 (E5) can perform touch sensing operation. At this time, the sensing and common electrode 151 (E1) is the first sensing electrode group, and the sensing and common electrode 151 (E2~E4) constitutes the first deflecting electrode group corresponding thereto; the sensing and common electrode 151 (E5) is the second sensing electrode. The group, and the sensing and common electrode 151 (E6~E8) constitute a second deflecting electrode group corresponding thereto. In FIG. 8, the first deflecting electrode group (E2 to E4) is drawn in the same column as the first sensing electrode group (E1), and the second deflecting electrode group (E6 to E8) and the second sensing electrode group (E5) are drawn in The same column is only for drawing instructions It is not limited to this. In practice, the sensing and common electrodes of the biasing electrode group are preferably configured to surround the corresponding sensing electrode group.
該複數個觸控選擇開關電路333將選定之一個以上感應電極組上的感應暨公共電極151(E1、E5)的電氣信號交連到該平均值電路810取平均值後，再將此平均值訊號Vave交連到相對應之至少一個增益大於零的放大器337-1、337-2的輸入端，並將該等放大器337-1、337-2輸出的反射偏向信號分別交連到該第一偏向電極組(E2~E4)與該第二偏向電極組(E6~E8)。於此同時，源自共通信號驅動放大器315、317之顯示共通信號Vcom1與Vcom2亦各自電器交連至第一偏向電極組、第二偏向電極組；即該兩偏向電極組之電極(E2~E4與E6~E8)於該兩感應電極組執行觸控操作之同時兼作顯示操作。同理可利用選擇開關電路333將感應暨偏向電極151(E1~E2)選為第一感應電極組且將感應暨公共電極151(E5~E6)選為第二感應電極組；又把感應暨公共電極151(E3~E4)選為第一偏向電極組且將感應暨公共電極151(E7~E8)選為第二偏向電極組。依此類推，彈性調整感應電極組之大小可調整觸控偵測之解析度。同時選定一組以上之感應電極組則可再增高觸控報點率。The plurality of touch selection switch circuits 333 cross-connect the electrical signals of the sensing and common electrodes 151 (E1, E5) on the selected one or more sensing electrode groups to the average value circuit 810, and then average the signals. Vave is connected to the input terminals of the corresponding amplifiers 337-1, 337-2 with at least one gain greater than zero, and the reflection bias signals output by the amplifiers 337-1, 337-2 are respectively connected to the first deflection electrode group (E2 to E4) and the second deflecting electrode group (E6 to E8). At the same time, the display common signals Vcom1 and Vcom2 from the common signal driving amplifiers 315 and 317 are also electrically connected to the first deflecting electrode group and the second deflecting electrode group; that is, the electrodes of the two deflecting electrode groups (E2~E4 and E6~E8) doubles as a display operation while performing touch operations on the two sensing electrode groups. Similarly, the selection switch circuit 333 can be used to select the sensing and biasing electrode 151 (E1~E2) as the first sensing electrode group and the sensing and common electrode 151 (E5~E6) as the second sensing electrode group; The common electrode 151 (E3 to E4) is selected as the first deflecting electrode group and the inductive and common electrode 151 (E7 to E8) is selected as the second deflecting electrode group. And so on, the size of the sensing electrode group can be adjusted elastically to adjust the resolution of the touch detection. Selecting more than one set of sensing electrode groups at the same time can increase the touch reporting rate.
如圖8所示，放大器337-1及觸控感應電路335-1靠近列1，此僅是示意之圖，並非該放大器337-1及觸控感應電路335-1一定是實現(implement)在該感應暨公共電極層150內。於其他實施例中，該放大器337-1及觸控感應電路亦可實現(implement)在該觸控電路330內。As shown in FIG. 8, the amplifier 337-1 and the touch sensing circuit 335-1 are close to the column 1. This is only a schematic diagram. The amplifier 337-1 and the touch sensing circuit 335-1 must not be implemented. The induction is in the common electrode layer 150. In other embodiments, the amplifier 337-1 and the touch sensing circuit can also be implemented in the touch circuit 330.
圖9係本創作一種高靈敏度之內嵌式觸控顯示裝置900之另一疊層示意圖。其與圖1主要差別在於該感應暨公共電極層150係佈植於該第一基板110與該顯示材料層130之間。其主要應用於VA形式的液晶顯示面板。FIG. 9 is another stacked diagram of a high-sensitivity in-cell touch display device 900. The main difference from FIG. 1 is that the sensing and common electrode layer 150 is implanted between the first substrate 110 and the display material layer 130. It is mainly applied to a liquid crystal display panel of the VA form.
針對習知的內嵌式觸控顯示面板之缺失，本創作提出一種觸控與顯示可分區平行作業且大幅增進訊號雜訊比之解決方案。不僅突破了內嵌式觸控螢幕解像度與螢幕尺寸之侷限性，又避免了觸控與顯示相互干擾的困擾，既提高了觸控報點率與正確性，更改善了顯示品質。In view of the lack of the conventional in-cell touch display panel, the present invention proposes a solution in which the touch and display can be partitioned in parallel and the signal noise ratio is greatly improved. It not only breaks through the limitations of the embedded touch screen resolution and screen size, but also avoids the interference between touch and display. It not only improves the touch rate and correctness, but also improves the display quality.
本創作係利用觸控電路擁有專用之獨立電源迴路，並以感應暨公共電極為觸控電路與顯示電路之共同接點，因彼此之間並無電流迴路，故不相互影響各自之相對電位的特性。再輔以反射偏向電極使降低電極間雜散電容並提升感測距離，又藉此提供各感應暨公共電極相對穩定一致之電荷，使觸控操作對顯示均質性之擾動降至最小，顯示與觸控分區而平行作業，提高彼此之操作效率。The creation system uses a dedicated independent power supply loop of the touch circuit, and uses the induction and common electrode as the common contact between the touch circuit and the display circuit. Since there is no current loop between them, they do not affect each other's relative potential. characteristic. In addition, the reflective deflection electrode is used to reduce the stray capacitance between the electrodes and increase the sensing distance, thereby providing a relatively stable and consistent charge of each sensing and common electrode, so that the disturbance of the display operation to the display homogeneity is minimized, display and touch. Control partitions and work in parallel to improve the efficiency of each other's operations.
上述實施例僅係為了方便說明而舉例而已，本創作所主張之權利範圍自應以申請專利範圍所述為準，而非僅限於上述實施例。The above-described embodiments are merely examples for convenience of description, and the scope of the claims is intended to be limited to the above embodiments.
150‧‧‧感應暨公共電極層150‧‧‧Induction and common electrode layer
310‧‧‧顯示控制電路310‧‧‧Display control circuit
330‧‧‧觸控電路330‧‧‧Touch circuit
311‧‧‧顯示訊號驅動電路311‧‧‧Display signal drive circuit
313‧‧‧顯示電源迴路313‧‧‧Display power circuit
331‧‧‧觸控專用電源迴路331‧‧‧Touch dedicated power circuit
333‧‧‧觸控選擇開關電路333‧‧‧Touch selection switch circuit
335‧‧‧觸控感應電路335‧‧‧ touch sensing circuit
337‧‧‧放大器337‧‧Amplifier
315,317‧‧‧共同電壓驅動放大器315,317‧‧‧Common voltage drive amplifier
350‧‧‧感應電極組350‧‧‧Induction electrode set
370‧‧‧偏向電極組370‧‧‧ bias electrode group
333-6‧‧‧觸控選擇開關電路333-6‧‧‧Touch selection switch circuit
a‧‧‧第一端點A‧‧‧first endpoint
b‧‧‧第二端點B‧‧‧second endpoint
c‧‧‧第三端點C‧‧‧third endpoint
151,E1~E16‧‧‧感應暨公共電極151, E1~E16‧‧‧ induction and common electrode
d‧‧‧第四端點D‧‧‧ fourth endpoint
410‧‧‧開關裝置410‧‧‧Switching device
411‧‧‧開關元件411‧‧‧Switching elements
413‧‧‧高阻抗元件413‧‧‧High-impedance components
Claims (15)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW104203521U TWM509379U (en) | 2015-03-10 | 2015-03-10 | High-sensitivity in-cell touch display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW104203521U TWM509379U (en) | 2015-03-10 | 2015-03-10 | High-sensitivity in-cell touch display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| TWM509379U true TWM509379U (en) | 2015-09-21 |
Family
ID=54607921
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW104203521U TWM509379U (en) | 2015-03-10 | 2015-03-10 | High-sensitivity in-cell touch display device |
Country Status (1)
| Country | Link |
|---|---|
| TW (1) | TWM509379U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI566140B (en) * | 2015-03-10 | 2017-01-11 | 速博思股份有限公司 | High-sensitivity in-cell touch display device |
| TWI621997B (en) * | 2016-02-04 | 2018-04-21 | 速博思股份有限公司 | High efficiency fingerprint identification device |
-
2015
- 2015-03-10 TW TW104203521U patent/TWM509379U/en unknown
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI566140B (en) * | 2015-03-10 | 2017-01-11 | 速博思股份有限公司 | High-sensitivity in-cell touch display device |
| TWI621997B (en) * | 2016-02-04 | 2018-04-21 | 速博思股份有限公司 | High efficiency fingerprint identification device |
| US10192092B2 (en) | 2016-02-04 | 2019-01-29 | Superc-Touch Corporation | High-efficiency fingerprint identification device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| TWI566140B (en) | High-sensitivity in-cell touch display device | |
| US11644916B2 (en) | Touch panel display device | |
| US10558297B2 (en) | Detection device | |
| US10180750B2 (en) | Touch sensor integrated display device | |
| US9772723B2 (en) | Capacitive in-cell touch panel and display device | |
| US9851832B2 (en) | Display panel, driving method thereof and display device | |
| JP5980157B2 (en) | Display device with touch detection function and electronic device | |
| CN100429609C (en) | Touch sensor, display with touch sensor, and method for generating position data | |
| US9785276B2 (en) | Capacitive in-cell touch panel and display device | |
| JP5807035B2 (en) | Display device with touch detection function, electronic device, and touch detection device | |
| JP2011008706A (en) | Information input device and display device | |
| CN207731256U (en) | Display device | |
| JP2013222421A (en) | Display device | |
| WO2012118038A1 (en) | Liquid crystal display device | |
| CN103984453A (en) | Input device, display device, and electronic device | |
| CN103293778A (en) | Touch liquid crystal optical grating device and 3D/2D flat-plate display device | |
| JP2015195010A (en) | Input device having touch sensor function and display device | |
| JP2019016283A (en) | Display | |
| TWI617960B (en) | Detection device and display device | |
| JP2014130626A (en) | Information input device and display device | |
| TWM509379U (en) | High-sensitivity in-cell touch display device | |
| US10534494B2 (en) | Detection device and display device | |
| CN110045857B (en) | Touch panel liquid crystal display device and driving method thereof | |
| KR102418579B1 (en) | Touch panel liquid crystal display device and method for driving the same | |
| US11726361B2 (en) | In-cell touch panel |