TWI479379B - Image display system and touch display device - Google Patents
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Description
本發明係關於一種觸控顯示裝置,特別關於一種可以避免觸碰感測與畫面顯示之操作產生互相干擾之觸控顯示裝置。The present invention relates to a touch display device, and more particularly to a touch display device that can avoid mutual interference between touch sensing and screen display operations.
觸控面板通常整合於一平面顯示裝置(例如,液晶顯示器(liquid crystal display,簡稱LCD)、主動式陣列有機發光顯示器(active matrix organic light-emitting display,AMOLED)等等)中,以形成觸控顯示裝置。觸控顯示裝置通常使用於電子裝置中,例如手提電腦、個人數位助理(personal digital assistants,PDA)、電子書(electronic books)、投影機、及手機等,其能夠透過手指、觸控筆(stylus)、尖筆等執行輸入的功能而漸漸受到矚目與普及。The touch panel is usually integrated into a flat display device (for example, a liquid crystal display (LCD), an active matrix organic light-emitting display (AMOLED), or the like to form a touch. Display device. Touch display devices are commonly used in electronic devices, such as laptop computers, personal digital assistants (PDAs), electronic books, projectors, and mobile phones, which are capable of transmitting fingers and styluses (stylus). ), the ability to perform input, such as a pen, has gradually gained attention and popularity.
由於觸控顯示裝置同時具有觸碰感測與畫面顯示之功能,為了避免觸碰感測與畫面顯示之操作產生互相干擾,影響到觸碰感測的精確度或畫面顯示之清晰度或流暢性,需要一種全新的觸控顯示裝置,其可解決現行觸控顯示裝置之觸碰感測與畫面顯示之操作會產生互相干擾的問題。Since the touch display device has the functions of touch sensing and screen display at the same time, in order to avoid mutual interference between the touch sensing and the screen display operation, the accuracy of the touch sensing or the clarity or smoothness of the screen display is affected. There is a need for a new type of touch display device that can solve the problem of mutual interference between the touch sensing and the screen display operation of the current touch display device.
根據本發明之一實施例,一種影像顯示系統,包括顯示器面板、觸控面板與同步信號產生電路。顯示器面板根 據一時序信號與複數資料驅動信號於至少一顯示區間顯示複數影像。觸控面板輸出複數第一驅動脈衝信號,並感測於一感測矩陣上之至少一觸碰事件之位置。同步信號產生電路接收該觸控面板輸出之該等第一驅動脈衝信號,並與該顯示器面板之該時序信號進行同步運算,而產生複數第二驅動脈衝信號。同步運算後之該等第二驅動脈衝信號係用以驅動該觸控面板之該感測矩陣,使得該觸控面板於該顯示器面板之至少一空白區間(blanking time)感測該至少一觸碰事件。According to an embodiment of the invention, an image display system includes a display panel, a touch panel, and a synchronization signal generating circuit. Display panel root The plurality of images are displayed in at least one display interval according to a timing signal and a plurality of data driving signals. The touch panel outputs a plurality of first driving pulse signals and senses a position of at least one touch event on a sensing matrix. The synchronization signal generating circuit receives the first driving pulse signals output by the touch panel, and performs synchronous operations with the timing signals of the display panel to generate a plurality of second driving pulse signals. The second driving pulse signal is used to drive the sensing matrix of the touch panel, so that the touch panel senses the at least one touch at at least one blanking time of the display panel event.
根據本發明之另一實施例,一種觸控顯示裝置,包括觸控面板與同步信號產生電路。觸控面板包括感測矩陣與觸碰感測裝置。觸碰感測裝置產生複數未同步運算之第一驅動脈衝信號、接收複數已同步運算之第二驅動脈衝信號,並根據該等已同步運算之第二驅動脈衝信號感測於該感測矩陣上之至少一觸碰事件之位置。同步信號產生電路根據該等未同步運算之第一驅動脈衝信號與一顯示器面板之一時序信號進行同步運算而產生該等已同步運算之第二驅動脈衝信號,使得該觸碰感測裝置於該顯示器面板不顯示影像之複數空白區間感測該至少一觸碰事件。According to another embodiment of the present invention, a touch display device includes a touch panel and a synchronization signal generating circuit. The touch panel includes a sensing matrix and a touch sensing device. The touch sensing device generates a plurality of unsynchronized first driving pulse signals, receives a plurality of synchronized driving second driving pulse signals, and senses the second driving pulse signals according to the synchronized operations on the sensing matrix At least one touch event location. The synchronization signal generating circuit generates a synchronous operation of the second driving pulse signal according to the synchronization operation of the first driving pulse signal of the unsynchronized operation and a timing signal of a display panel, so that the touch sensing device is The display panel does not display a plurality of blank intervals of the image to sense the at least one touch event.
為使本發明之製造、操作方法、目標和優點能更明顯易懂,下文特舉幾個較佳實施例,並配合所附圖式,作詳細說明如下:In order to make the manufacturing, operating methods, objects and advantages of the present invention more apparent, the following detailed description of the preferred embodiments and the accompanying drawings
第1圖係顯示根據本發明之一實施例所述之影像顯示系統的多種實施方式。如圖所示,影像顯示系統可包括一觸控顯示裝置101,其同時兼具觸碰感測以及畫面顯示之功能。根據本發明之影像顯示系統可能包括於一電子裝置100。電子裝置100可包括上述觸控顯示裝置101與一輸入單元102。輸入單元102用於接收影像信號,以控制觸控顯示裝置101顯示影像。根據本發明之實施例,電子裝置100有多種實施方式,包括:一行動電話、一數位相機、一個人數位助理、一行動電腦、一桌上型電腦、一電視機、一汽車用顯示器、一可攜式光碟撥放器、或任何包括影像顯示功能的裝置。1 is a diagram showing various embodiments of an image display system in accordance with an embodiment of the present invention. As shown in the figure, the image display system can include a touch display device 101, which simultaneously has the functions of touch sensing and screen display. An image display system according to the present invention may be included in an electronic device 100. The electronic device 100 can include the touch display device 101 and an input unit 102. The input unit 102 is configured to receive an image signal to control the touch display device 101 to display an image. According to an embodiment of the present invention, the electronic device 100 has various embodiments, including: a mobile phone, a digital camera, a number of assistants, a mobile computer, a desktop computer, a television, an automobile display, and the like. A portable disc player, or any device that includes an image display function.
第2圖係顯示根據本發明之一實施例所述之觸控顯示裝置方塊圖。觸控顯示裝置201可包括顯示器面板210、觸控面板220與同步信號產生電路230。顯示器面板210可包括閘極驅動電路211、資料驅動電路212、畫素矩陣213以及控制晶片214。閘極驅動電路211用以產生複數閘極驅動信號以驅動畫素矩陣213之複數畫素。資料驅動電路212用以產生複數資料驅動信號以提供資料至畫素矩陣213之複數畫素。控制晶片214用以產生複數時序信號,包括複數時脈信號、輸出致能(Output Enable,簡稱OE)信號、重置信號與起始脈衝(Start Pulse,簡稱SP)等。值得注意的是,於本發明之實施例中,控制晶片214、閘極驅動電路211與資料驅動電路212可以分別是獨立的晶片,或者控制晶片214可被整合於閘極驅動電路211與資料驅動 電路212之任一者,而本發明並不限於任一種實施方式。2 is a block diagram showing a touch display device according to an embodiment of the invention. The touch display device 201 can include a display panel 210, a touch panel 220, and a synchronization signal generating circuit 230. The display panel 210 may include a gate driving circuit 211, a data driving circuit 212, a pixel matrix 213, and a control wafer 214. The gate driving circuit 211 is configured to generate a plurality of gate driving signals to drive the complex pixels of the pixel matrix 213. The data driving circuit 212 is configured to generate a complex data driving signal to provide a plurality of pixels of data to the pixel matrix 213. The control chip 214 is configured to generate a complex timing signal, including a complex clock signal, an Output Enable (OE) signal, a reset signal, and a Start Pulse (SP). It should be noted that in the embodiment of the present invention, the control wafer 214, the gate driving circuit 211 and the data driving circuit 212 may be independent wafers, respectively, or the control wafer 214 may be integrated into the gate driving circuit 211 and the data driving. Any of the circuits 212, and the invention is not limited to any one embodiment.
觸控面板220包括感測矩陣221與觸碰感測裝置222。觸碰感測裝置222用以感測於感測矩陣221上之觸碰事件所發生之位置。觸碰事件可以是因使用者使用手指、觸控筆(stylus)、尖筆等媒介執行輸入的功能或觸碰顯示器面板時發生。The touch panel 220 includes a sensing matrix 221 and a touch sensing device 222. The touch sensing device 222 is configured to sense a location where a touch event on the sensing matrix 221 occurs. The touch event may occur when the user performs an input function using a medium such as a finger, a stylus, a stylus, or the like, or when the display panel is touched.
根據本發明之一實施例,顯示器面板210與觸控面板220可以製作為兩個獨立的面板,並且透過貼合(lamination)程序被貼合在一起,此為外掛式類型(out cell type)之觸控顯示裝置。例如,顯示器面板210與觸控面板220可透過光學水膠被貼合在一起。根據本發明之另一實施例,觸控面板220之感測矩陣221可於製作時直接被整合於顯示器面板220之畫素矩陣內,此為內嵌式類型(in cell type)之觸控顯示裝置。例如,觸控面板之觸碰感測電極可直接被製作於顯示器面板之顯示單元(display cell)內。根據本發明之又另一實施例,觸控面板220之感測矩陣221可於製作時直接被整合於顯示器面板220之畫素矩陣之表層,此為表面式類型(on cell type)之觸控顯示裝置。例如,觸控面板之觸碰感測電極可直接被製作於顯示器面板之display cell之表層。值得注意的是,本發明所提出之可避免觸碰感測與畫面顯示之操作產生互相干擾之新穎之觸控顯示裝置201可根據以上所介紹之外掛式類型(out cell type)、內嵌式類型(in cell type)或表面式類型(on cell type)等任一種類型被製作,因此,本發明並不限於任一種實施方式。According to an embodiment of the present invention, the display panel 210 and the touch panel 220 can be fabricated as two independent panels, and are attached together by a lamination program, which is an out cell type. Touch display device. For example, the display panel 210 and the touch panel 220 can be attached together through optical glue. According to another embodiment of the present invention, the sensing matrix 221 of the touch panel 220 can be directly integrated into the pixel matrix of the display panel 220 during production, which is an in-cell type touch display. Device. For example, the touch sensing electrodes of the touch panel can be directly fabricated in a display cell of the display panel. According to still another embodiment of the present invention, the sensing matrix 221 of the touch panel 220 can be directly integrated into the surface layer of the pixel matrix of the display panel 220 during production, which is a touch on the surface type (on cell type). Display device. For example, the touch sensing electrodes of the touch panel can be directly fabricated on the surface of the display cell of the display panel. It should be noted that the novel touch display device 201 proposed by the present invention that can avoid mutual interference between the touch sensing and the screen display can be out cell type and embedded according to the above description. Any type such as an in-cell type or an on-cell type is produced, and thus the present invention is not limited to any one of the embodiments.
第3a圖與第3b圖係顯示顯示器面板之資料驅動信號與觸控面板之感測信號互相干擾之範例波形圖,其中第3a圖係顯示顯示器面板之資料驅動信號之波形,第3b圖係顯示觸控面板之感測信號之波形。由於觸控面板之感測電極通常會非常貼近顯示器面板之顯示單元,因此觸控面板與顯示器面板之間可能會有電容產生。如第3a圖所示,當顯示器面板之一條資料線上所傳送之資料驅動信號Data_(n)具有一脈衝時,此脈衝可能透過觸控面板與顯示器面板之間的電容而耦合至觸控面板之接收器之一條相近之感測線上,導致感測線上的感測信號Rx_(n)產生刺針狀的雜訊。由於觸控面板係藉由接收器所接收到的感測信號電壓來判斷是否發生觸碰事件,因此,由資料驅動信號所產生的干擾可能會嚴重影響到觸碰感測的精確度。The 3a and 3b are example waveform diagrams showing the interference between the data driving signal of the display panel and the sensing signal of the touch panel, wherein the 3a image shows the waveform of the data driving signal of the display panel, and the 3b is a display The waveform of the sensing signal of the touch panel. Since the sensing electrodes of the touch panel are usually very close to the display unit of the display panel, there may be a capacitance between the touch panel and the display panel. As shown in FIG. 3a, when the data driving signal Data_(n) transmitted on one of the data lines of the display panel has a pulse, the pulse may be coupled to the touch panel through the capacitance between the touch panel and the display panel. One of the receivers has a similar sensing line, which causes the sensing signal Rx_(n) on the sensing line to generate a needle-like noise. Since the touch panel determines whether a touch event occurs by the voltage of the sensing signal received by the receiver, the interference generated by the data driving signal may seriously affect the accuracy of the touch sensing.
為了解決此問題,本發明所提出之觸控顯示裝置201透過同步信號產生電路230產生複數已同步之脈衝信號,使得觸控面板220可於顯示器面板210不顯示影像之複數空白區間感測觸碰事件。以下將針對本發明所提出之觸控顯示裝置201做更詳細的介紹。In order to solve the problem, the touch display device 201 of the present invention generates a plurality of synchronized pulse signals through the synchronization signal generating circuit 230, so that the touch panel 220 can detect the touch in the blank area of the display panel 210 without displaying the image. event. The touch display device 201 proposed by the present invention will be described in more detail below.
第4圖係顯示根據本發明之一實施例所述之顯示器面板之複數時序信號之範例波形圖。第4圖所示之時序信號包括時脈信號CPV、起始脈波SP、輸出致能信號OE、以及閘極驅動電路所輸出之複數閘極驅動信號OUT_(n)、OUT_(n+1)、OUT_(n+2)、OUT_(n+3)、OUT_(m)、OUT_(m+1)等。如圖所示,時脈信號CPV為系統運作之一基礎時脈信號,其可以是顯示器面板之水平時脈信號或垂直時 脈信號。起始脈波SP用以指示一訊框畫面的開始,也可被稱為水平起始脈波(STH)。輸出致能信號OE用以指示出顯示器面板之顯示區間(active period)與空白區間(blanking period),其中於本發明之實施例中,空白區間(blanking period)可以是顯示器面板之水平空白區間或垂直空白區間,或顯示器面板之水平空白區間與垂直空白區間。Figure 4 is a diagram showing an exemplary waveform of a complex timing signal of a display panel in accordance with an embodiment of the present invention. The timing signals shown in FIG. 4 include a clock signal CPV, a start pulse SP, an output enable signal OE, and a plurality of gate drive signals OUT_(n), OUT_(n+1) output by the gate drive circuit. , OUT_(n+2), OUT_(n+3), OUT_(m), OUT_(m+1), etc. As shown, the clock signal CPV is one of the basic clock signals of the system operation, which can be the horizontal clock signal of the display panel or vertical Pulse signal. The start pulse SP is used to indicate the start of a frame picture, and may also be referred to as a horizontal start pulse (STH). The output enable signal OE is used to indicate an active period and a blanking period of the display panel. In the embodiment of the present invention, the blanking period may be a horizontal blank interval of the display panel or Vertical blank interval, or horizontal blank interval and vertical blank interval of the display panel.
由圖中可以看出,輸出致能信號OE被拉高之區間代表顯示器面板之空白區間,此時閘極驅動信號會被拉低,因此顯示器面板於此區間不會顯示資料。反之,輸出致能信號OE被拉低之區間代表顯示器面板之顯示區間,顯示器面板於此區間可根據閘極驅動信號與資料驅動信號之脈衝顯示資料。值得注意的是,雖以上實施例中的信號為高態動作(active high)信號,然而本發明並不限於此。本發明之時序信號亦可以是低態動作(active low)的信號。As can be seen from the figure, the interval in which the output enable signal OE is pulled up represents the blank interval of the display panel. At this time, the gate drive signal is pulled low, so the display panel does not display data in this interval. Conversely, the interval in which the output enable signal OE is pulled down represents the display interval of the display panel, and the display panel can display data according to the pulse of the gate drive signal and the data drive signal in this section. It is to be noted that although the signal in the above embodiment is an active high signal, the present invention is not limited thereto. The timing signal of the present invention may also be an active low signal.
根據本發明之一實施例,同步信號產生電路230可自觸控面板之觸碰感測裝置222接收複數未同步運算之驅動脈衝信號,以及自顯示器面板210之控制晶片214接收之一時序信號,請參閱第4圖所示,而該時序信號係為顯示器面板之一時脈信號CPV、一起始脈波SP或輸出致能信號OE等),並且根據未同步之脈衝信號與時序信號產生複數已同步運算之驅動脈衝信號。觸碰感測裝置222將進一步自同步信號產生電路230接收已同步之脈衝信號,並根據已同步之脈衝信號感測觸碰事件之位置,使得觸碰感測裝置222可於顯示器面板210於一空白區間(blanktime)感測觸碰事件,即於該顯示器板210不顯示影像之空白區間 感測觸碰事件,以避免觸碰感測與畫面顯示之操作產生互相干擾,影響到觸碰感測的精確度或畫面顯示之清晰度或流暢性。According to an embodiment of the present invention, the synchronization signal generating circuit 230 can receive a plurality of unsynchronized driving pulse signals from the touch sensing device 222 of the touch panel, and receive a timing signal from the control chip 214 of the display panel 210. Please refer to FIG. 4, and the timing signal is a clock signal CPV, a start pulse SP or an output enable signal OE, etc. of the display panel, and the complex signal is synchronized according to the unsynchronized pulse signal and the timing signal. The drive pulse signal of the operation. The touch sensing device 222 further receives the synchronized pulse signal from the synchronization signal generating circuit 230, and senses the position of the touch event according to the synchronized pulse signal, so that the touch sensing device 222 can be on the display panel 210. The blank interval senses a touch event, that is, the display panel 210 does not display a blank interval of the image. The touch event is sensed to avoid mutual interference between the touch sensing and the screen display operation, affecting the accuracy of the touch sensing or the clarity or fluency of the screen display.
第5圖係顯示根據本發明之一實施例所述之同步信號產生電路方塊圖。同步信號產生電路530可包括至少一邏輯運算模組531、處理器532以及儲存裝置533。邏輯運算模組531包括至少一邏輯運算單元534用以根據未同步之脈衝信號(以信號Tx表示)與至少一時序信號(例如,時脈信號CPV、起始脈波SP或輸出致能信號OE之至少一者)執行至少一邏輯運算,以產生已同步之脈衝信號(以信號Sync_Tx表示)。根據本發明之實施例,邏輯運算模組531所執行之邏輯運算可以是任意的邏輯運算,或是多種邏輯運算(例如,邏輯及(AND)、邏輯或(OR)、邏輯非(NOT)、邏輯非及(NAND)、邏輯非或(NOR)、邏輯異或(XOR)、邏輯異或非(XNOR)等)之任意組合。Figure 5 is a block diagram showing a synchronizing signal generating circuit according to an embodiment of the present invention. The synchronization signal generating circuit 530 can include at least one logic operation module 531, a processor 532, and a storage device 533. The logic operation module 531 includes at least one logic operation unit 534 for detecting an unsynchronized pulse signal (represented by the signal Tx) and at least one timing signal (for example, a clock signal CPV, a start pulse SP, or an output enable signal OE). At least one of the operations) performs at least one logic operation to generate a synchronized pulse signal (represented by signal Sync_Tx). According to an embodiment of the present invention, the logic operation performed by the logic operation module 531 can be any logical operation or multiple logical operations (for example, logical AND, logical OR, logical NOT). Any combination of logical non- (NAND), logical non-or (NOR), logical exclusive OR (XOR), logically exclusive or non-exclusive (XNOR), etc.
第6圖係顯示一種邏輯運算實施例。於此實施例中,邏輯運算單元534可根據輸出致能信號OE與未同步之脈衝信號(以信號Tx表示)執行邏輯及(AND)運算,以得到已同步之脈衝信號(以信號Sync_Tx表示),其中值得注意的是,邏輯及(AND)不一定是要透過邏輯及閘(AND gate)實施,也可以是透過多種不同的邏輯閘組成等效於邏輯及(AND)運算之方式實施。Figure 6 shows an embodiment of a logical operation. In this embodiment, the logic operation unit 534 can perform a logical AND operation according to the output enable signal OE and the unsynchronized pulse signal (represented by the signal Tx) to obtain the synchronized pulse signal (represented by the signal Sync_Tx). It is worth noting that the logical AND is not necessarily implemented by logic gates or gates, but may be implemented by a plurality of different logic gates equivalent to logical AND operations.
第7圖係顯示另一種邏輯運算實施例。於此實施例中,邏輯運算單元534可根據時脈信號CPV與未同步之脈衝信號(以信號Tx表示)執行邏輯及(AND)運算,以得到已同步 之脈衝信號(以信號Sync_Tx表示)。值得注意的是,於此實施例中,處理器532可根據顯示器面板210之空白區間之相關資訊進一步調整已同步之脈衝信號Sync_Tx,使得由同步信號產生電路最終輸出之同步之脈衝信號Sync_Tx僅於顯示器面板210之空白區間具有脈衝,藉此錯開觸碰感測與畫面顯示之操作,以避免產生互相干擾。空白區間之相關資訊可被儲存於儲存裝置533內,例如,將事先將顯示器面板之控制晶片之信號時序寫入儲存裝置533內。信號時序的資訊可包括,例如,但不限於,顯示器面板210於第幾個時脈脈衝會開始進入顯示區間或空白區間等。由於根據不同的產品需求,顯示器面板可提供給周邊裝置之時序信號可能會有所限制。因此,當顯示器面板可輸出之時序信號不包括輸出致能信號OE時,可透過處理器532根據顯示器面板之空白區間之相關資訊進一步調整已同步之脈衝信號Sync_Tx,以達到相同的同步結果。相同的概念也可應用於未同步之脈衝信號與其他時序信號執行邏輯運算以產生已同步之脈衝信號之實施例,因此以下不再贅述。Figure 7 shows another logical operation embodiment. In this embodiment, the logic operation unit 534 can perform a logical AND operation according to the clock signal CPV and the unsynchronized pulse signal (represented by the signal Tx) to obtain the synchronized Pulse signal (represented by signal Sync_Tx). It should be noted that, in this embodiment, the processor 532 can further adjust the synchronized pulse signal Sync_Tx according to the information about the blank interval of the display panel 210, so that the synchronized pulse signal Sync_Tx finally output by the synchronization signal generating circuit is only The blank section of the display panel 210 has pulses, thereby staggering the operation of touch sensing and screen display to avoid mutual interference. The information about the blank interval can be stored in the storage device 533. For example, the signal timing of the control chip of the display panel is written into the storage device 533 in advance. The information of the signal timing may include, for example, but not limited to, the display panel 210 may begin to enter a display interval or a blank interval at a certain number of clock pulses. Due to the different product requirements, the timing signals that the display panel can provide to peripheral devices may be limited. Therefore, when the timing signal outputted by the display panel does not include the output enable signal OE, the synchronized pulse signal Sync_Tx can be further adjusted by the processor 532 according to the relevant information of the blank area of the display panel to achieve the same synchronization result. The same concept can also be applied to embodiments in which the unsynchronized pulse signal and other timing signals perform logical operations to generate synchronized pulse signals, and therefore will not be described below.
此外,值得注意的是,當觸控面板所產生之未同步之脈衝信號(以信號Tx表示)與顯示器面板所產生之時序信號之相位不同步時,也可透過同步信號產生電路之處理器532調整其相位差(例如,提供適當的時間延遲),使得觸控面板所產生之未同步之脈衝信號(以信號Tx表示)與顯示器面板所產生之時序信號之相位可達同步(例如,上升緣與下降緣可對齊)。In addition, it is worth noting that when the unsynchronized pulse signal generated by the touch panel (indicated by the signal Tx) is not synchronized with the phase of the timing signal generated by the display panel, the processor 532 of the synchronization signal generating circuit can also be passed. Adjusting the phase difference (eg, providing an appropriate time delay) allows the unsynchronized pulse signal (represented by signal Tx) generated by the touch panel to be synchronized with the phase signal generated by the display panel (eg, rising edge) Align with the falling edge).
第8圖係顯示根據本發明之一實施例所述之觸控面板之觸碰感測示意圖。如圖所示,觸碰感測裝置之傳送機(transmitter)依序將自同步信號產生電路接收到的已同步之脈衝信號Sync_Tx(1)~Sync_Tx(8)於時間T1~T8傳送至感測矩陣221。值得注意的是,圖中所示之已同步之脈衝信號Sync_Tx(1)~Sync_Tx(8)之信號波形僅以一個脈衝作為示意,然而,各脈衝實際上可包含一或多個方波,而本發明並不限於任一種實施方式。每當脈衝信號之脈衝抵達時,觸碰感測裝置之接收機(receiver)會讀取各感測線上的信號Rx_(1)~Rx_8),用以感測各感測線上的電壓,以判斷是否發生觸碰事件,並且判斷觸碰點之位置。根據本發明之實施例,由於觸控面板係根據已同步之脈衝信號Sync_Tx(1)~Sync_Tx(8)於顯示器面板不顯示影像之空白區間感測觸碰事件,因此可避免觸碰感測與畫面顯示之操作產生互相干擾,使得觸碰感測的精確度或畫面顯示之清晰度或流暢性不會因干擾而受到影響。FIG. 8 is a schematic diagram showing touch sensing of a touch panel according to an embodiment of the invention. As shown in the figure, the transmitter of the touch sensing device sequentially transmits the synchronized pulse signals Sync_Tx(1)~Sync_Tx(8) received from the synchronization signal generating circuit to the sensing at times T1~T8. Matrix 221. It should be noted that the signal waveforms of the synchronized pulse signals Sync_Tx(1)~Sync_Tx(8) shown in the figure are only indicated by one pulse, however, each pulse may actually contain one or more square waves, and The invention is not limited to any one embodiment. Whenever the pulse of the pulse signal arrives, the receiver of the touch sensing device reads the signals Rx_(1)~Rx_8) on each sensing line to sense the voltage on each sensing line to determine Whether a touch event occurs and the position of the touch point is judged. According to the embodiment of the present invention, since the touch panel senses a touch event according to the blank interval of the image displayed on the display panel according to the synchronized pulse signals Sync_Tx(1)~Sync_Tx(8), the touch sensing can be avoided. The operation of the screen display interferes with each other, so that the accuracy of the touch sensing or the sharpness or fluency of the screen display is not affected by the interference.
本發明雖以較佳實施例揭露如上,然其並非用以限定本發明的範圍,任何熟習此項技藝者,在不脫離本發明之精神和範圍內,當可做些許的更動與潤飾,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。The present invention has been described above with reference to the preferred embodiments thereof, and is not intended to limit the scope of the present invention, and the invention may be modified and modified 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‧‧‧電子裝置100‧‧‧Electronic devices
101、201‧‧‧觸控顯示裝置101, 201‧‧‧ touch display device
102‧‧‧輸入單元102‧‧‧Input unit
210‧‧‧顯示器面板210‧‧‧Display panel
211‧‧‧閘極驅動電路211‧‧‧ gate drive circuit
212‧‧‧資料驅動電路212‧‧‧Data Drive Circuit
213‧‧‧畫素矩陣213‧‧‧ pixel matrix
214‧‧‧控制晶片214‧‧‧Control wafer
220‧‧‧觸控面板220‧‧‧ touch panel
221‧‧‧感測矩陣221‧‧‧Sensor matrix
222‧‧‧觸碰感測裝置222‧‧‧Touch sensing device
230、530‧‧‧同步信號產生電路230, 530‧‧‧ Sync signal generation circuit
531‧‧‧邏輯運算模組531‧‧‧Logical computing module
532‧‧‧處理器532‧‧‧ processor
533‧‧‧儲存裝置533‧‧‧Storage device
534‧‧‧邏輯運算單元534‧‧‧Logical unit
CPV、Data_(n)、OE、OUT_(n)、OUT_(n+1)、OUT_(n+2)、OUT_(n+3)、OUT_(m)、OUT_(m+1)、Rx_(1)、Rx_(2)、Rx_(3)、Rx_(4)、Rx_(5)、Rx_(6)、Rx_(7)、Rx_(8)、Rx_(n)、SP、Sync_Tx、Sync_Tx_(1)、Sync_Tx_(2)、Sync_Tx_(3)、Sync_Tx_(4)、Sync_Tx_(5)、Sync_Tx_(6)、Sync_Tx_(7)、Sync_Tx_(8)、Tx‧‧‧信號CPV, Data_(n), OE, OUT_(n), OUT_(n+1), OUT_(n+2), OUT_(n+3), OUT_(m), OUT_(m+1), Rx_(1 ), Rx_(2), Rx_(3), Rx_(4), Rx_(5), Rx_(6), Rx_(7), Rx_(8), Rx_(n), SP, Sync_Tx, Sync_Tx_(1) , Sync_Tx_(2), Sync_Tx_(3), Sync_Tx_(4), Sync_Tx_(5), Sync_Tx_(6), Sync_Tx_(7), Sync_Tx_(8), Tx‧‧ signals
T1、T2、T3、T4、T5、T6、T7、T8‧‧‧時間T1, T2, T3, T4, T5, T6, T7, T8‧‧‧ time
第1圖係顯示根據本發明之一實施例所述之影像顯示系統的多種實施方式。1 is a diagram showing various embodiments of an image display system in accordance with an embodiment of the present invention.
第2圖係顯示根據本發明之一實施例所述之觸控顯示裝置方塊圖。2 is a block diagram showing a touch display device according to an embodiment of the invention.
第3a圖與第3b圖係顯示顯示器面板之資料驅動信號與觸控面板之感測信號互相干擾之範例波形圖。Figures 3a and 3b show exemplary waveform diagrams of the data driving signals of the display panel and the sensing signals of the touch panel interfering with each other.
第4圖係顯示根據本發明之一實施例所述之顯示器面板之複數時序信號之範例波形圖。Figure 4 is a diagram showing an exemplary waveform of a complex timing signal of a display panel in accordance with an embodiment of the present invention.
第5圖係顯示根據本發明之一實施例所述之同步信號產生電路方塊圖。Figure 5 is a block diagram showing a synchronizing signal generating circuit according to an embodiment of the present invention.
第6圖係顯示一種邏輯運算實施例。Figure 6 shows an embodiment of a logical operation.
第7圖係顯示另一種邏輯運算實施例。Figure 7 shows another logical operation embodiment.
第8圖係顯示根據本發明之一實施例所述之觸控面板之觸碰感測示意圖。FIG. 8 is a schematic diagram showing touch sensing of a touch panel according to an embodiment of the invention.
201‧‧‧觸控顯示裝置201‧‧‧Touch display device
210‧‧‧顯示器面板210‧‧‧Display panel
211‧‧‧閘極驅動電路211‧‧‧ gate drive circuit
212‧‧‧資料驅動電路212‧‧‧Data Drive Circuit
213‧‧‧畫素矩陣213‧‧‧ pixel matrix
214‧‧‧控制晶片214‧‧‧Control wafer
220‧‧‧觸控面板220‧‧‧ touch panel
221‧‧‧感測矩陣221‧‧‧Sensor matrix
222‧‧‧觸碰感測裝置222‧‧‧Touch sensing device
230‧‧‧同步信號產生電路230‧‧‧Synchronous signal generation circuit
Claims (17)
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