TWI452505B - Touch screen display - Google Patents
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Description
本發明有關於一種觸控螢幕顯示器，特別是一種能夠降低成本的觸控螢幕顯示器。 The invention relates to a touch screen display, in particular to a touch screen display capable of reducing cost.
圖1為習知液晶顯示器的驅動電路方塊圖。液晶顯示器(LCD)10包含一顯示面板15及一顯示驅動電路。顯示驅動電路包含一時序控制器11、一閘極驅動電路12、一源極驅動電路13及一共通電極14。顯示面板15包含多個像素單元、多條掃描線X1~Xn及多條資料線Y1~Ym。掃描線X1~Xn耦接閘極驅動電路12，資料線Y1~Ym耦接源極驅動電路13用以操作該些像素單元。每一像素單元包含一薄膜電晶體T1及一儲存電容C1，儲存電容C1一端耦接於薄膜電晶體T1的源極，另一端耦接於共通電極14。薄膜電晶體T1的源極耦接於一資料線(data line or source line)，其閘極耦接於一掃描線(scan line or gate line)。於液晶顯示器10操作時，閘極驅動電路12傳送開關電壓Ts到掃描線X1~Xn，進而依序地開啟多個薄膜電晶體T1，並由源極驅動電路13傳送灰階電壓VDs到資料線Y1~Ym，用以改變每一像素單元中之液晶(未顯示)的穿透率。 1 is a block diagram of a driving circuit of a conventional liquid crystal display. The liquid crystal display (LCD) 10 includes a display panel 15 and a display driving circuit. The display driving circuit includes a timing controller 11, a gate driving circuit 12, a source driving circuit 13, and a common electrode 14. The display panel 15 includes a plurality of pixel units, a plurality of scanning lines X1 to Xn, and a plurality of data lines Y1 to Ym. The scan lines X1~Xn are coupled to the gate driving circuit 12, and the data lines Y1~Ym are coupled to the source driving circuit 13 for operating the pixel units. Each of the pixel units includes a thin film transistor T1 and a storage capacitor C1. One end of the storage capacitor C1 is coupled to the source of the thin film transistor T1, and the other end is coupled to the common electrode 14. The source of the thin film transistor T1 is coupled to a data line or source line, and the gate is coupled to a scan line or gate line. When the liquid crystal display 10 is operated, the gate driving circuit 12 transmits the switching voltage Ts to the scanning lines X1 to Xn, thereby sequentially turning on the plurality of thin film transistors T1, and the source driving circuit 13 transmits the gray scale voltage VDs to the data lines. Y1~Ym is used to change the transmittance of liquid crystal (not shown) in each pixel unit.
圖2顯示一個習知電容式觸控面板(capacitive touch panel)的架構示意圖。請參考圖2，習知電容式觸控裝置20包含一電容式觸控面板21及一感測控制器22。電容式觸控面板21包含多條感測線，該些感測線包含Dn+Sm條導線；用以感測觸控面板之X軸方向位置的電容器(capacitor)23；以及用以感測觸控面板之Y軸方向位置的電容器24。感測控制器22包含有多個接腳，該些接腳分別耦接於該些導線Dn及Sm。 FIG. 2 shows a schematic diagram of a conventional capacitive touch panel. Referring to FIG. 2 , the conventional capacitive touch device 20 includes a capacitive touch panel 21 and a sensing controller 22 . The capacitive touch panel 21 includes a plurality of sensing lines, the sensing lines include Dn+Sm wires, a capacitor 23 for sensing the position of the touch panel in the X-axis direction, and a sensing panel for sensing the touch panel. Capacitor 24 in the Y-axis direction. The sensing controller 22 includes a plurality of pins, and the pins are respectively coupled to the wires Dn and Sm.
當使用者觸碰電容式觸控面板21的某一位置時，使位於或鄰近該位置的電容器111及112產生一對應於該觸碰的等效電容值，並藉由對應之導線Dn及Sm，傳送至感測控制器22。感測控制器22以分時方式依序地接收該些導線Dn及Sm的多個電容值。當感測控制器22測得來自 導線Dn及Sm的電容值包含對應於該觸碰的等效電容值時，即可利用位於或鄰近該位置的電容器111的x座標及電容器112的y座標，計算出被觸碰之該位置的坐標。 When the user touches a certain position of the capacitive touch panel 21, the capacitors 111 and 112 located at or adjacent to the position generate an equivalent capacitance value corresponding to the touch, and by corresponding wires Dn and Sm And transmitted to the sensing controller 22. The sensing controller 22 sequentially receives a plurality of capacitance values of the wires Dn and Sm in a time sharing manner. When the sensing controller 22 measures from When the capacitance values of the wires Dn and Sm include an equivalent capacitance value corresponding to the touch, the x coordinate of the capacitor 111 located at or adjacent to the position and the y coordinate of the capacitor 112 can be used to calculate the position touched. coordinate.
依據習知技術，即將液晶顯示器(LCD)10及電容式觸控面板21加以貼合形成一觸控螢幕顯示器，因此習知的觸控螢幕顯示器形成堆疊結構，厚度較厚，且需貼合程序增加製造程序而提高成本。 According to the prior art, the liquid crystal display (LCD) 10 and the capacitive touch panel 21 are attached to form a touch screen display. Therefore, the conventional touch screen display is formed into a stacked structure, has a thick thickness, and requires a bonding procedure. Increase manufacturing costs and increase costs.
本發明一實施例之目的在於提供一種觸控螢幕顯示器。一實施例之目的在於提供一種能夠降低成本的觸控螢幕顯示器。一實施例之目的在於提供一種觸控感測電路及顯示驅動電路共用多條資料線及多條掃描線的觸控螢幕顯示器。 It is an object of an embodiment of the present invention to provide a touch screen display. It is an object of an embodiment to provide a touch screen display that can reduce cost. An embodiment of the present invention provides a touch screen display in which a touch sensing circuit and a display driving circuit share a plurality of data lines and a plurality of scanning lines.
依據本發明一實施例，提供一種觸控螢幕顯示器包含一顯示面板、一顯示驅動電路、一觸控感測電路及一座標計算裝置。顯示面板包含多條資料線、多條掃描線及多個像素單元，每一像素單元包含一切換元件及一儲存電容分別耦接該些資料線其一及該些掃描線其一。顯示驅動電路包含一閘極驅動電路及一源極驅動電路。閘極驅動電路耦接於該些掃描線用以提供一開關電壓於每一掃描線。源極驅動電路耦接於該些資料線，用以提供一灰階電壓於每一資料線。觸控感測電路包含一源極感測控制電路，源極感測控制電路耦接於該些資料線，用以提供一源極感測電壓於每一資料線，並感測耦接於每一資料線之該些儲存電容的電容值。座標計算裝置，耦接源極感測控制電路，接收源極感測控制電路所傳來之該些資料線的該些電容值，比較該些資料線的該些電容值，以獲得一座標。 According to an embodiment of the invention, a touch screen display includes a display panel, a display driving circuit, a touch sensing circuit, and a standard computing device. The display panel includes a plurality of data lines, a plurality of scan lines, and a plurality of pixel units. Each of the pixel units includes a switching component and a storage capacitor respectively coupled to the data lines and one of the scan lines. The display driving circuit includes a gate driving circuit and a source driving circuit. The gate driving circuit is coupled to the scan lines for providing a switching voltage to each of the scan lines. The source driving circuit is coupled to the data lines for providing a gray scale voltage to each data line. The touch sensing circuit includes a source sensing control circuit, and the source sensing control circuit is coupled to the data lines to provide a source sensing voltage to each data line, and the sensing is coupled to each The capacitance value of the storage capacitors of a data line. The coordinate calculation device is coupled to the source sensing control circuit, and receives the capacitance values of the data lines transmitted from the source sensing control circuit, and compares the capacitance values of the data lines to obtain a target.
於一實施例中，觸控感測電路更包含一閘極感測控制電路，耦接於該些掃描線，並感測耦接於每一掃描線之該些儲存電容的電容值。座標計算裝置更比較該些掃描線的該些電容值，以獲得前述座標。 In one embodiment, the touch sensing circuit further includes a gate sensing control circuit coupled to the scan lines and sensing capacitance values of the storage capacitors coupled to each scan line. The coordinate computing device compares the capacitance values of the scan lines to obtain the aforementioned coordinates.
於一實施例中，觸控螢幕顯示器更包含一時序控制器，時序控制器用以接收一影像訊號，並將影像訊號解析出一開關電壓控制訊號及一灰階電壓資料訊號，閘極驅動電路依據開關電壓控制訊號產生該些開關 電壓，源極驅動電路依據灰階電壓資料訊號產生該些灰階電壓。較佳的情況是，時序控制器更將影像訊號解析解析出一源極感測電壓資料訊號，而且源極感測控制電路更依據源極感測電壓資料訊號產生該些源極感測電壓。 In an embodiment, the touch screen display further includes a timing controller, wherein the timing controller is configured to receive an image signal, and parse the image signal into a switching voltage control signal and a gray scale voltage data signal, and the gate driving circuit is based on Switching voltage control signals generate the switches The voltage and source drive circuits generate the gray scale voltages according to the gray scale voltage data signals. Preferably, the timing controller further parses the image signal to resolve a source sensing voltage data signal, and the source sensing control circuit generates the source sensing voltages according to the source sensing voltage data signal.
於一實施例中，每一開關電壓皆具有一高水平區域，且在每一開關電壓的高水平區域內，源極驅動電路提供一灰階電壓於每一資料線，而且源極感測控制電路提供一源極感測電壓VSs於該些資料線中的至少一部分。 In one embodiment, each of the switching voltages has a high level region, and in a high level region of each switching voltage, the source driving circuit provides a gray scale voltage to each data line, and the source sensing control The circuit provides a source sense voltage VSs to at least a portion of the data lines.
由於本發明一實施例，觸控螢幕顯示器的顯示驅動電路及觸控感測電路，共用顯示面板上的多條資料線、多條掃描線及儲存電容，因此多條資料線、多條掃描線及儲存電容能夠同時用來顯示畫面以及產生被觸碰的座標，因此本發明一實施例不需要額外製造電容式觸控面板能夠簡省製造成本。 According to an embodiment of the present invention, a display driving circuit and a touch sensing circuit of a touch screen display share a plurality of data lines, a plurality of scanning lines, and a storage capacitor on the display panel, and thus a plurality of data lines and a plurality of scanning lines The storage capacitor can be used to display the screen and generate the touched coordinates at the same time. Therefore, an embodiment of the present invention does not require additional manufacturing of the capacitive touch panel, which can simplify the manufacturing cost.
本發明的其他目的和優點可以從本發明所揭露的技術特徵中得到進一步的了解。為讓本發明之上述和其他目的、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。 Other objects and advantages of the present invention will become apparent from the technical features disclosed herein. The above and other objects, features, and advantages of the invention will be apparent from
圖3顯示依本發明一實施例觸控螢幕顯示器的電路圖。觸控螢幕顯示器100包含一顯示面板15、一顯示驅動電路及一觸控感測電路。 3 is a circuit diagram of a touch screen display in accordance with an embodiment of the present invention. The touch screen display 100 includes a display panel 15, a display driving circuit and a touch sensing circuit.
顯示面板15包含多條資料線Y1~Ym、多條掃描線X1~Xn及多個像素單元，每一像素單元包含一切換元件T1及一儲存電容C1。切換元件T1及儲存電容C1分別耦接該些資料線Y1~Ym其一及該些掃描線X1~Xn其一。切換元件T1可以為一薄膜電晶體。顯示驅動電路包含一共用電極14、一閘極驅動電路12、一源極驅動電路13及一時序控制器11。觸控感測電路包含一源極感測控制電路41、一閘極感測控制電路42及一座標計算裝置43。 The display panel 15 includes a plurality of data lines Y1 to Ym, a plurality of scanning lines X1 to Xn, and a plurality of pixel units. Each pixel unit includes a switching element T1 and a storage capacitor C1. The switching element T1 and the storage capacitor C1 are respectively coupled to one of the data lines Y1 to Ym and one of the scan lines X1 to Xn. The switching element T1 can be a thin film transistor. The display driving circuit includes a common electrode 14, a gate driving circuit 12, a source driving circuit 13, and a timing controller 11. The touch sensing circuit includes a source sensing control circuit 41, a gate sensing control circuit 42 and a landmark computing device 43.
時序控制器11耦接閘極驅動電路12及源極驅動電路13。時序控制器11接收一影像訊號，用以將影像訊號解析成開關電壓控制訊號Ts及灰階電壓資料訊號Ds(訊號Ts及Ds皆包含產生電壓的時序資訊)。閘極驅動電路12依據開關電壓控制訊號Ts分時地產生多個開關電壓VTs， 且閘極驅動電路12耦接於該些掃描線X1~Xn，用以提供一開關電壓VTs於每一掃描線X1~Xn。源極驅動電路13依據灰階電壓資料訊號Ds分時地產生多個灰階電壓，且源極驅動電路13耦接於該些資料線Y1~Ym，用以提供一灰階電壓VDs於每一資料線Y1~Ym。時序控制器11更將前述影像訊號解析解析出一源極感測電壓資料訊號Ss，源極感測控制電路41更依據源極感測電壓資料訊號Ss分時地產生多個源極感測電壓，且源極感測控制電路41，耦接於該些資料線Y1~Ym，用以提供一源極感測電壓VSs於該些資料線Y1~Ym中的至少一部分。 The timing controller 11 is coupled to the gate driving circuit 12 and the source driving circuit 13. The timing controller 11 receives an image signal for parsing the image signal into the switching voltage control signal Ts and the gray scale voltage data signal Ds (the signals Ts and Ds all contain timing information for generating voltage). The gate driving circuit 12 generates a plurality of switching voltages VTs according to the switching voltage control signal Ts. The gate driving circuit 12 is coupled to the scan lines X1 X Xn for providing a switching voltage VTs to each of the scan lines X1 X Xn. The source driving circuit 13 generates a plurality of gray scale voltages according to the gray scale voltage data signal Ds, and the source driving circuit 13 is coupled to the data lines Y1 to Ym for providing a gray scale voltage VDs. Data line Y1~Ym. The timing controller 11 further analyzes the image signal to resolve a source sensing voltage data signal Ss, and the source sensing control circuit 41 generates a plurality of source sensing voltages according to the source sensing voltage data signal Ss. The source sensing control circuit 41 is coupled to the data lines Y1 Y Ym for providing a source sensing voltage VSs to at least a portion of the data lines Y1 Y Ym.
當使用者觸碰觸控螢幕顯示器100的某一位置時，使位於及/或鄰近該位置的多個儲存電容C1的電容值會改變，而產生一對應於該觸碰的等效電容值，並藉由耦接該些儲存電容C1的資料線Y1~Ym，傳送至源極驅動電路13；及藉由耦接該些儲存電容C1的掃描線X1~Xn，傳送至閘極驅動電路12。接著，源極驅動電路13感測耦接於每一相同資料線之該些儲存電容C1的電容值；而閘極感測控制電路12感測耦接於每一相同掃描線之該些儲存電容的電容值。 When the user touches a certain position of the touch screen display 100, the capacitance value of the plurality of storage capacitors C1 located at and/or adjacent to the position is changed to generate an equivalent capacitance value corresponding to the touch. And being transmitted to the source driving circuit 13 by the data lines Y1 to Ym coupled to the storage capacitors C1, and to the gate driving circuit 12 by the scanning lines X1 to Xn coupled to the storage capacitors C1. The source driving circuit 13 senses the capacitance values of the storage capacitors C1 coupled to each of the same data lines; and the gate sensing control circuit 12 senses the storage capacitors coupled to each of the same scan lines. The value of the capacitor.
座標計算裝置43耦接源極感測控制電路13，並接收源極感測控制電路13從該些資料線Y1~Ym所測得的該些電容值，分析該些資料線Y1~Ym的該些電容值，當源極感測控制電路13測得來自導線資料線Y1~Ym的電容值包含對應於該觸碰的等效電容值時，即可利用位於或鄰近該位置的儲存電容C1的x座標及y座標，計算出被觸碰之該位置的坐標，如此即可獲得一座標。於本實施例中，座標產生裝置43包含一電容數位轉換器431及一座標計算器432。電容數位轉換器431依據每一感測結果訊號的電容值大小產生一相對應之數位電容值。座標計算器432接收耦接該些數位電容值，並依據該些數位電容值產生一座標資料。圖4顯示本發明一實施例之源極驅動電路、閘極驅動電路及源極感測控制電路所提供之各種電壓間的關係的示意圖。圖5A~5C顯示本發明一實施例之源極驅動電路及源極感測控制電路所提供之各種電壓間的關係的示意圖。以下將參照圖4所示實施例，更說明本發明一實施例中，顯示驅動電路及觸控感測電路的運作方式。 The coordinate calculation device 43 is coupled to the source sensing control circuit 13 and receives the capacitance values measured by the source sensing control circuit 13 from the data lines Y1 Y Ym, and analyzes the data lines Y1 Y Ym. For the capacitance value, when the source sensing control circuit 13 measures that the capacitance value from the conductor data lines Y1~Ym includes an equivalent capacitance value corresponding to the touch, the storage capacitor C1 located at or adjacent to the position can be utilized. The x coordinate and the y coordinate are used to calculate the coordinates of the position touched, so that a target can be obtained. In this embodiment, the coordinate generating device 43 includes a capacitive digital converter 431 and a landmark calculator 432. The capacitance digital converter 431 generates a corresponding digital capacitance value according to the capacitance value of each sensing result signal. The coordinate calculator 432 receives the digital capacitance values and generates a calibration data according to the digital capacitance values. 4 is a diagram showing the relationship between various voltages provided by a source driving circuit, a gate driving circuit, and a source sensing control circuit according to an embodiment of the present invention. 5A-5C are schematic diagrams showing the relationship between various voltages provided by a source driving circuit and a source sensing control circuit according to an embodiment of the present invention. The operation mode of the display driving circuit and the touch sensing circuit in an embodiment of the present invention will be further described below with reference to the embodiment shown in FIG.
如圖4及5A~5C所示，每一開關電壓VTs、灰階電壓VDs及源極感測電 壓VSs為一階梯式訊號且具有一高水平區域。於本實施例中，在開關電壓VTs的高水平區域內，源極驅動電路13提供一灰階電壓VDs於每一資料線Y1~Ym，用以顯示一畫面，而且源極感測控制電路41提供一源極感測電壓VSs於該些資料線Y1~Ym中的至少一部分，用以感測一觸碰。於一實施例中，源極感測控制電路41亦可以在開關電壓VTs的高水平區域內提供一源極感測電壓VSs於每一資料線Y1~Ym中。然而，由於用以感測觸控的解析度，不需要到達如顯示影像之像素的解析度的程度，因此於一實施例中，如圖4所示，於T2的時間內，在掃描線X2之開關電壓VTs的高水平區域，亦可以僅有源極驅動電路13提供一灰階電壓VDs於每一資料線Y1~Ym，而源極感測控制電路41不提供任何感測用電壓。 As shown in Figures 4 and 5A to 5C, each switching voltage VTs, gray scale voltage VDs, and source sensing power The voltage VSs is a stepped signal and has a high level area. In the embodiment, in the high level region of the switching voltage VTs, the source driving circuit 13 provides a gray scale voltage VDs to each data line Y1~Ym for displaying a picture, and the source sensing control circuit 41 A source sensing voltage VSs is provided on at least a portion of the data lines Y1~Ym for sensing a touch. In an embodiment, the source sensing control circuit 41 can also provide a source sensing voltage VSs in each of the data lines Y1 YYm in a high level region of the switching voltage VTs. However, since the resolution of the touch is not required to reach the resolution of the pixel of the display image, in one embodiment, as shown in FIG. 4, in the time of T2, on the scan line X2. In the high level region of the switching voltage VTs, only the source driving circuit 13 may provide a gray scale voltage VDs to each of the data lines Y1 to Ym, and the source sensing control circuit 41 does not provide any sensing voltage.
此外，本發明不限定閘極驅動電路12、一源極驅動電路13及源極感測控制電路41，提供電壓至該些掃描線X1~Xn及資料線Y1~Ym，用以對該些儲存電容C1進行充電的方式。以下僅說明若干的實施方式，然而應了解的是，於本發明所屬領域具有通常知識者，係能夠依據本發明所揭示內容、及顯示器之產品規格等，自行設計該些驅動及控制電路的運作方式。 In addition, the present invention does not limit the gate driving circuit 12, the source driving circuit 13, and the source sensing control circuit 41, and supplies voltages to the scan lines X1~Xn and the data lines Y1~Ym for storing the same. The way capacitor C1 is charged. In the following, only a few embodiments are described. However, it should be understood that those skilled in the art to which the present invention pertains can design the operation of the driving and control circuits in accordance with the disclosure of the present invention and the product specifications of the display. the way.
如圖5A所示，在開關電壓VTs的高水平區域內，於源極驅動電路13提供一灰階電壓VDs後，源極感測控制電路41亦提供一源極感測電壓VSs。亦即，於一源極感測電壓VSs位於兩相鄰灰階電壓VDs之間。如此，可利用一資料線得到一座標。 As shown in FIG. 5A, in a high level region of the switching voltage VTs, after the source driving circuit 13 supplies a gray scale voltage VDs, the source sensing control circuit 41 also provides a source sensing voltage VSs. That is, the one source sense voltage VSs is located between two adjacent gray scale voltages VDs. In this way, a data line can be used to obtain a target.
如圖5B所示，在開關電壓VTs的高水平區域內，於包含有多個源極感測電壓VSs的一源極感測電壓群組，位於兩相鄰灰階電壓VDs之間。如此，可利用多條資料線得到一座標。由於用以感測觸控的解析度，不需要到達如顯示影像之像素的解析度的程度，因此藉此方式，可以擴大計算座標之電容值的母體，能夠得到較精確的座標。 As shown in FIG. 5B, in a high level region of the switching voltage VTs, a source sensing voltage group including a plurality of source sensing voltages VSs is located between two adjacent gray scale voltages VDs. In this way, a plurality of data lines can be used to obtain a target. Since the resolution of the touch is not required to reach the degree of resolution of the pixel of the display image, the matrix for calculating the capacitance value of the coordinate can be enlarged by this method, and a more accurate coordinate can be obtained.
如圖5B所示，在開關電壓VTs的高水平區域內，於包含有多個源極感測電壓VSs的一源極感測電壓群組，位於兩相鄰灰階電壓VDs之間。如此，可利用多條資料線得到一座標。由於用以感測觸控的解析度，不需要到達如顯示影像之像素的解析度的程度，因此藉此方式，可以 擴大計算座標之電容值的母體，能夠得到較精確的座標。 As shown in FIG. 5B, in a high level region of the switching voltage VTs, a source sensing voltage group including a plurality of source sensing voltages VSs is located between two adjacent gray scale voltages VDs. In this way, a plurality of data lines can be used to obtain a target. Since the resolution of the touch is sensed, it is not necessary to reach the degree of resolution of the pixel of the display image, and thus, By expanding the matrix of the capacitance value of the coordinates, a more accurate coordinate can be obtained.
如圖5C所示，在開關電壓VTs的高水平區域內，多數組相異的源極感測電壓群組，位於兩相鄰灰階電壓VDs之間，每一源極感測電壓群組包含有多個源極感測電壓VSs。如此，在開關電壓VTs的高水平區域內，可利用多條資料線得到多數個座標。因此藉此方式，可以更進一步擴大計算座標之電容值的母體，能夠得到更精確的座標。 As shown in FIG. 5C, in the high-level region of the switching voltage VTs, the multi-array different source sensing voltage group is located between two adjacent gray-scale voltages VDs, and each source sensing voltage group includes There are multiple source sensing voltages VSs. Thus, in a high level region of the switching voltage VTs, a plurality of data lines can be used to obtain a plurality of coordinates. Therefore, in this way, the matrix for calculating the capacitance value of the coordinates can be further expanded, and a more accurate coordinate can be obtained.
綜上所述，由於本發明一實施例，觸控螢幕顯示器100的顯示驅動電路及觸控感測電路，共用顯示面板15上的多條資料線Y1~Ym、多條掃描線X1~Xn及儲存電容C1，因此多條資料線Y1~Ym、多條掃描線X1~Xn及儲存電容C1能夠同時用來顯示畫面；以及產生被觸碰的座標。相較於習知技術，本發明一實施例不需要額外製造電容式觸控面板能夠簡省製造成本。於一實施例中，由於不需要額外堆疊一電容式觸控面板，觸控螢幕顯示器100的厚度能夠較薄。 In summary, the display driving circuit and the touch sensing circuit of the touch screen display 100 share a plurality of data lines Y1~Ym and a plurality of scanning lines X1~Xn on the display panel 15 according to an embodiment of the invention. The capacitor C1 is stored, so that a plurality of data lines Y1 to Ym, a plurality of scan lines X1 to Xn, and a storage capacitor C1 can be simultaneously used for displaying a picture; and a touched coordinate is generated. Compared with the prior art, an embodiment of the present invention does not require additional manufacturing of the capacitive touch panel, which can simplify the manufacturing cost. In an embodiment, the thickness of the touch screen display 100 can be thin because there is no need to additionally stack a capacitive touch panel.
雖然本發明已以較佳實施例揭露如上，然其並非用以限定本發明，任何熟習此技藝者，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，因此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。另外，本發明的任一實施例或申請專利範圍不須達成本發明所揭露之全部目的或優點或特點。此外，摘要部分和標題僅是用來輔助專利文件搜尋之用，並非用來限制本發明之權利範圍。 While the present invention has been described in its preferred embodiments, the present invention is not intended to limit the invention, and the present invention may be modified and modified without departing from the spirit and scope of the invention. The scope of protection is subject to the definition of the scope of the patent application. In addition, any of the objects or advantages or features of the present invention are not required to be achieved by any embodiment or application of the invention. In addition, the abstract sections and headings are only used to assist in the search of patent documents and are not intended to limit the scope of the invention.
10‧‧‧液晶顯示器 10‧‧‧LCD display
100‧‧‧觸控螢幕顯示器 100‧‧‧ touch screen display
11‧‧‧時序控制器 11‧‧‧Timing controller
111‧‧‧電容器 111‧‧‧ capacitor
112‧‧‧電容器 112‧‧‧ capacitor
12‧‧‧閘極驅動電路 12‧‧‧ gate drive circuit
13‧‧‧源極驅動電路 13‧‧‧Source drive circuit
14‧‧‧共通電極 14‧‧‧Common electrode
15‧‧‧顯示面板 15‧‧‧ display panel
20‧‧‧電容式觸控裝置 20‧‧‧Capacitive touch device
21‧‧‧電容式觸控面板 21‧‧‧Capacitive touch panel
22‧‧‧感測控制器 22‧‧‧Sensing controller
23‧‧‧電容器 23‧‧‧ Capacitors
24‧‧‧電容器 24‧‧‧ capacitor
41‧‧‧源極感測控制電路 41‧‧‧Source sensing control circuit
42‧‧‧閘極感測控制電路 42‧‧‧ gate sensing control circuit
43‧‧‧座標計算裝置 43‧‧‧ coordinate computing device
431‧‧‧電容數位轉換器 431‧‧‧Capacitance digital converter
432‧‧‧座標計算器 432‧‧‧Coordinate Calculator
C1‧‧‧儲存電容 C1‧‧‧ storage capacitor
T1‧‧‧薄膜電晶體 T1‧‧‧thin film transistor
圖1為習知液晶顯示器的驅動電路方塊圖。 1 is a block diagram of a driving circuit of a conventional liquid crystal display.
圖2顯示一個習知電容式觸控面板的架構示意圖。 FIG. 2 shows a schematic diagram of a conventional capacitive touch panel.
圖3顯示依本發明一實施例觸控螢幕顯示器的電路圖。 3 is a circuit diagram of a touch screen display in accordance with an embodiment of the present invention.
圖4顯示本發明一實施例之源極驅動電路、閘極驅動電路及源極感測控制電路所提供之各種電壓間的關係的示意圖。 4 is a diagram showing the relationship between various voltages provided by a source driving circuit, a gate driving circuit, and a source sensing control circuit according to an embodiment of the present invention.
圖5A~5C顯示本發明一實施例，於一開關電壓的高水平區域內，源極驅動電路及源極感測控制電路所提供之各種電壓間的關係的示意圖。 5A-5C are schematic diagrams showing the relationship between various voltages provided by a source driving circuit and a source sensing control circuit in a high level region of a switching voltage according to an embodiment of the present invention.
圖6顯示本發明一實施例之座標計算裝置的功能方塊圖。 Figure 6 is a block diagram showing the function of a coordinate computing device in accordance with an embodiment of the present invention.
100‧‧‧觸控螢幕顯示器 100‧‧‧ touch screen display
11‧‧‧時序控制器 11‧‧‧Timing controller
12‧‧‧閘極驅動電路 12‧‧‧ gate drive circuit
13‧‧‧源極驅動電路 13‧‧‧Source drive circuit
14‧‧‧共通電極 14‧‧‧Common electrode
15‧‧‧顯示面板 15‧‧‧ display panel
23‧‧‧電容器 23‧‧‧ Capacitors
24‧‧‧電容器 24‧‧‧ capacitor
41‧‧‧源極感測控制電路 41‧‧‧Source sensing control circuit
42‧‧‧閘極感測控制電路 42‧‧‧ gate sensing control circuit
43‧‧‧座標計算裝置 43‧‧‧ coordinate computing device
C1‧‧‧儲存電容 C1‧‧‧ storage capacitor
T1‧‧‧薄膜電晶體 T1‧‧‧thin film transistor
Claims (5)
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|---|---|---|---|---|
| TWM291569U (en) * | 2005-07-26 | 2006-06-01 | Mei-Ying Chen | Touch control type flat-panel display |
| CN1908744A (en) * | 2005-08-04 | 2007-02-07 | 三星电子株式会社 | Liquid crystal display including sensing unit |
| EP1921537A2 (en) * | 2006-11-09 | 2008-05-14 | Samsung Electronics Co., Ltd. | LCDS with integrated touch panels |
| TW200945155A (en) * | 2008-04-22 | 2009-11-01 | Atlab Inc | Touch and proximity sensitive display panel, display device and touch and proximity sensing method using the same |
| US20100253638A1 (en) * | 2009-04-06 | 2010-10-07 | Marduke Yousefpor | Integrated Touch Sensitive Display Gate Driver |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWM291569U (en) * | 2005-07-26 | 2006-06-01 | Mei-Ying Chen | Touch control type flat-panel display |
| CN1908744A (en) * | 2005-08-04 | 2007-02-07 | 三星电子株式会社 | Liquid crystal display including sensing unit |
| EP1921537A2 (en) * | 2006-11-09 | 2008-05-14 | Samsung Electronics Co., Ltd. | LCDS with integrated touch panels |
| TW200945155A (en) * | 2008-04-22 | 2009-11-01 | Atlab Inc | Touch and proximity sensitive display panel, display device and touch and proximity sensing method using the same |
| US20100253638A1 (en) * | 2009-04-06 | 2010-10-07 | Marduke Yousefpor | Integrated Touch Sensitive Display Gate Driver |
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