TWI697824B - Touch display devcie - Google Patents

Touch display devcie Download PDF

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TWI697824B
TWI697824B TW108116474A TW108116474A TWI697824B TW I697824 B TWI697824 B TW I697824B TW 108116474 A TW108116474 A TW 108116474A TW 108116474 A TW108116474 A TW 108116474A TW I697824 B TWI697824 B TW I697824B
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touch
multiplex
sub
display
coupled
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TW108116474A
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TW202042032A (en
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陳志成
李家圻
劉貴文
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友達光電股份有限公司
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Priority to CN201911233700.4A priority patent/CN110908544B/en
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0412—Digitisers structurally integrated in a display

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Liquid Crystal Display Device Control (AREA)

Abstract

The present invention discloses a touch display device. The touch display device includes a number of pixel electrodes, a number of touch pads, a number of wire sets, a multiplexing circuit and a driving IC. Each of the pixel electrodes includes N sub pixel electrodes. Each of the wire sets includes N pixel data lines and at least one touch signal line. The multiplexing circuit includes a number of sub multiplexing circuits. Each of the sub multiplexing circuits includes (N-1) first multiplexing switches and at least one second multiplexing switch. For each of the wire sets, (N-1) of the pixel data lines are coupled to one of display/touch signal output pins of the driving IC respectively via the first multiplexing switches of one of the sub multiplexing circuits; the other one of the pixel data lines is coupled to said display/touch signal output pin without via the sub multiplexing circuit; and the touch signal line is coupled to said display/touch signal output pin via the second multiplexing switch

Description

觸控顯示裝置 Touch display device

本發明是有關於一種觸控顯示裝置。 The invention relates to a touch display device.

觸控顯示裝置因為直覺的操作方式受到現代人的喜愛，而被廣泛地應用在諸如手機、平板電腦等各式電子產品之中。隨著近年來手持電子裝置流行大尺寸顯示螢幕，如何降低觸控顯示裝置的成本是重要的課題之一。 The touch display device is popular with modern people because of its intuitive operation, and is widely used in various electronic products such as mobile phones and tablet computers. With the popularity of large-size display screens in handheld electronic devices in recent years, how to reduce the cost of touch-sensitive display devices is one of the important issues.

本發明實施例係揭露一種觸控顯示裝置，包括多個畫素電極、多觸控偵測電極、多個走線組、一多工電路以及一驅動積體電路。各畫素電極包括N個子畫素電極。對於各走線組，包括N條畫素資料線及至少一條觸控訊號線。畫素資料線分別耦接至畫素電極的其中之一的子畫素電極。觸控訊號線耦接至觸控偵測電極的其中之一。多工電路包括多個子多工電路。各子多工電路包括(N-1)個第一多工開關及至少一個第二多工開關。驅動積體電路包括多個顯示/驅動訊號輸出接腳。顯示/驅動訊號輸出接腳用以分時輸出顯示訊號及觸控訊號。對於各走線組，畫素資料線的其中(N-1)條分別通過子多工電路的其中之一的第一多工開關 耦接至驅動積體電路的顯示/觸控訊號輸出接腳的其中之一。畫素資料線的其中另一條未通過子多工電路耦接至驅動積體電路的該其中一顯示/觸控訊號輸出接腳。觸控訊號線通過該其中一子多工電路的第二多工開關耦接至驅動積體電路的該其中一顯示/觸控訊號輸出接腳。 The embodiment of the present invention discloses a touch display device, which includes a plurality of pixel electrodes, a multi-touch detection electrode, a plurality of wiring groups, a multiplexing circuit, and a driving integrated circuit. Each pixel electrode includes N sub-pixel electrodes. For each wiring group, there are N pixel data lines and at least one touch signal line. The pixel data lines are respectively coupled to the sub-pixel electrodes of one of the pixel electrodes. The touch signal line is coupled to one of the touch detection electrodes. The multiplexing circuit includes a plurality of sub-multiplexing circuits. Each sub-multiplex circuit includes (N-1) first multiplex switches and at least one second multiplex switch. The driving integrated circuit includes a plurality of display/driving signal output pins. The display/drive signal output pin is used for time-sharing output of display signals and touch signals. For each trace group, (N-1) of the pixel data lines respectively pass through the first multiplex switch of one of the sub-multiplex circuits It is coupled to one of the display/touch signal output pins of the driving integrated circuit. The other one of the pixel data lines is not coupled to the one of the display/touch signal output pins of the driving integrated circuit through the sub-multiplex circuit. The touch signal line is coupled to one of the display/touch signal output pins of the driving integrated circuit through the second multiplex switch of the one of the sub-multiplex circuits.

為了對本發明之上述及其他方面有更佳的瞭解，下文特舉實施例，並配合所附圖式詳細說明如下： In order to have a better understanding of the above-mentioned and other aspects of the present invention, the following specific examples are given in conjunction with the accompanying drawings to describe in detail as follows:

10、30、40、50:觸控偵測裝置 10, 30, 40, 50: touch detection device

102、302、402、502:觸控偵測電極 102, 302, 402, 502: touch detection electrode

104、304、404、504:走線組 104, 304, 404, 504: wiring group

104R、104G、104B、304R、304G、304B、404R、404G、404B、504R、504G、504B:畫素資料線 104R, 104G, 104B, 304R, 304G, 304B, 404R, 404G, 404B, 504R, 504G, 504B: pixel data line

104T、306T、406T1、406T2、506T1、506T2:觸控訊號線 104T, 306T, 406T1, 406T2, 506T1, 506T2: touch signal line

106、306、406、506:多工電路 106, 306, 406, 506: multiplex circuit

1061、3061、4061、5061:子多工電路 1061, 3061, 4061, 5061: sub-multiplex circuit

1061R、1061G、3061R、3061G、4061R、4061G、5061R、5061G:第一多工開關 1061R, 1061G, 3061R, 3061G, 4061R, 4061G, 5061R, 5061G: the first multiplex switch

1061T、3061T、4061T1、4061T2、5061T1、5061T2:第二多工開關 1061T, 3061T, 4061T1, 4061T2, 5061T1, 5061T2: second multiplex switch

310、510A、510B:第三多工開關 310, 510A, 510B: third multiplex switch

SWc、SWc1、SWc2:控制開關 SWc, SWc1, SWc2: control switch

第1圖繪示依據本發明一實施例的觸控顯示裝置的示意圖。 FIG. 1 is a schematic diagram of a touch display device according to an embodiment of the invention.

第2圖繪示依據本發明一實施例的觸控顯示裝置的訊號時序圖。 FIG. 2 shows a signal timing diagram of the touch display device according to an embodiment of the invention.

第3圖繪示依據本發明一實施例的觸控顯示裝置的示意圖。 FIG. 3 is a schematic diagram of a touch display device according to an embodiment of the invention.

第4圖繪示依據本發明一實施例的觸控顯示裝置的示意圖。 FIG. 4 is a schematic diagram of a touch display device according to an embodiment of the invention.

第5圖繪示依據本發明一實施例的觸控顯示裝置的示意圖。 FIG. 5 is a schematic diagram of a touch display device according to an embodiment of the invention.

第6圖繪示依據本發明一實施例的觸控顯示裝置的訊號時序圖。 FIG. 6 is a signal timing diagram of the touch display device according to an embodiment of the invention.

請參照第1圖，第1圖繪示依據本發明一實施例的觸控顯示裝置的示意圖。觸控顯示裝置10包括多個畫素電極(未示出)、多個觸控偵測電極102、多個走線組104、一多工電路106以及一驅動積體電路108。 Please refer to FIG. 1. FIG. 1 is a schematic diagram of a touch display device according to an embodiment of the present invention. The touch display device 10 includes a plurality of pixel electrodes (not shown), a plurality of touch detection electrodes 102, a plurality of wiring groups 104, a multiplexing circuit 106, and a driving integrated circuit 108.

畫素電極可被劃分為多行(row)畫素電極，行數與觸控顯示裝置10的解析度有關，例如，當觸控顯示裝置10的解析度為 1080RGBx1920時，則畫素電極可被劃分為1080行。每一畫素電極包括N個畫素子電極，其中N為正整數。在本實施例中，每一畫素電極包括三個子畫素電極(N=3)，即R子畫素電極、G子畫素電極以及B子畫素電極。 The pixel electrodes can be divided into rows of pixel electrodes, and the number of rows is related to the resolution of the touch display device 10. For example, when the resolution of the touch display device 10 is When 1080RGBx1920, the pixel electrode can be divided into 1080 lines. Each pixel electrode includes N pixel sub-electrodes, where N is a positive integer. In this embodiment, each pixel electrode includes three sub-pixel electrodes (N=3), namely, R sub-pixel electrode, G sub-pixel electrode, and B sub-pixel electrode.

走線組104的數量與觸控顯示裝置10的解析度有關，例如，當觸控顯示裝置10的解析度為1080RGBx1920時，則觸控顯示裝置10可包括1080個走線組104。每一走線組104包括N條畫素資料線104R、104G、104B及一條觸控訊號線104T。畫素資料線的數量與每一畫素電極所包括的子畫素電極的數量相同，即在本實施例中為三條。每一走線組104的畫素資料線104R、104G、104B分別耦接至一行畫素電極中的對應的R子畫素電極、G子畫素電極以及B子畫素電極。觸控訊號線104T耦接至觸控偵測電極102的其中之一。 The number of the wiring groups 104 is related to the resolution of the touch display device 10. For example, when the resolution of the touch display device 10 is 1080RGB×1920, the touch display device 10 may include 1080 wiring groups 104. Each wiring group 104 includes N pixel data lines 104R, 104G, 104B and one touch signal line 104T. The number of pixel data lines is the same as the number of sub-pixel electrodes included in each pixel electrode, that is, three in this embodiment. The pixel data lines 104R, 104G, and 104B of each wiring group 104 are respectively coupled to the corresponding R sub-pixel electrodes, G sub-pixel electrodes, and B sub-pixel electrodes in a row of pixel electrodes. The touch signal line 104T is coupled to one of the touch detection electrodes 102.

多工電路106包括多個子多工電路1061。子多工電路1061的數量與走線組104的數量是相同的。每一子多工電路1061耦接至走線組104的其中之一以及驅動積體電路108的多個接腳的其中之一。每一子多工電路1061包括(N-1)個第一多工開關1061R、1061G以及一第二多工開關1061T。 The multiplexing circuit 106 includes a plurality of sub-multiplexing circuits 1061. The number of sub-multiplexing circuits 1061 and the number of wiring groups 104 are the same. Each sub-multiplex circuit 1061 is coupled to one of the wiring groups 104 and one of the pins of the driving integrated circuit 108. Each sub-multiplexing circuit 1061 includes (N-1) first multiplexing switches 1061R, 1061G and a second multiplexing switch 1061T.

每一走線組104的其中一條畫素資料線耦接至驅動積體電路108的多個顯示/觸控訊號輸出接腳的其中之一，其餘的(N-1)條畫素資料線及觸控訊號線通過子多工電路的其中之一耦接至所述顯示/觸控訊號輸出接腳。更明確來說，對於每一走線組，有(N-1)條畫素資料線分別通過其中一個子多工電路中對應的(N-1)個第一多工開關耦 接至驅動積體電路的其中一個顯示/觸控訊號輸出接腳，觸控訊號線通過對應的第二多工開關耦接至相同的顯示/觸控訊號輸出接腳，而剩餘的一條畫素資料線則不通過子多工電路耦接至相同的顯示/觸控訊號輸出接腳。也就是說，對於每一走線組，有(N-1)條畫素資料線及一條觸控訊號線通過子多工電路而與該走線組中另一條畫素資料線共用驅動積體電路的同一個顯示/觸控訊號輸出接腳。 One of the pixel data lines of each trace group 104 is coupled to one of the multiple display/touch signal output pins of the driving integrated circuit 108, and the remaining (N-1) pixel data lines and The touch signal line is coupled to the display/touch signal output pin through one of the sub-multiplex circuits. More specifically, for each trace group, (N-1) pixel data lines respectively pass through the corresponding (N-1) first multiplex switch couples in one of the sub-multiplex circuits. Connected to one of the display/touch signal output pins of the driving integrated circuit, the touch signal line is coupled to the same display/touch signal output pin through the corresponding second multiplex switch, and the remaining one pixel The data lines are not coupled to the same display/touch signal output pin through the sub-multiplex circuit. That is to say, for each trace group, there are (N-1) pixel data lines and one touch signal line through the sub-multiplex circuit to share the driving integrated with another pixel data line in the trace group The same display/touch signal output pin of the circuit.

以第1圖中最左側的走線組104為例，畫素資料線104R通過子多工電路1061的第一多工開關1061R耦接至驅動積體電路108的顯示/觸控訊號輸出接腳P1；畫素資料線104G通過子多工電路1061的第一多工開關1061G耦接至驅動積體電路108的顯示/觸控訊號輸出接腳P1；觸控訊號線104T通過子多工電路1061的第二多工開關1061T耦接至驅動積體電路108的顯示/觸控訊號輸出接腳P1；以及畫素資料線104B不通過子多工電路1061而耦接至驅動積體電路108的顯示/觸控訊號輸出接腳P1。驅動積體電路108的顯示/觸控訊號輸出接腳P1可分時輸出顯示訊號及觸控訊號，即顯示/觸控訊號輸出接腳P1輸出的訊號S1在顯示期間(display term，DP)為顯示訊號，而在觸控偵測期間(touch detecting term，TP)為觸控訊號。 Taking the leftmost trace group 104 in Figure 1 as an example, the pixel data line 104R is coupled to the display/touch signal output pin of the driving integrated circuit 108 through the first multiplex switch 1061R of the sub-multiplex circuit 1061 P1; the pixel data line 104G is coupled to the display/touch signal output pin P1 of the driving integrated circuit 108 through the first multiplex switch 1061G of the sub-multiplex circuit 1061; the touch signal line 104T is through the sub-multiplex circuit 1061 The second multiplex switch 1061T is coupled to the display/touch signal output pin P1 of the driving integrated circuit 108; and the pixel data line 104B is coupled to the display driving the integrated circuit 108 without passing through the sub-multiplex circuit 1061 /Touch signal output pin P1. The display/touch signal output pin P1 that drives the integrated circuit 108 can output the display signal and the touch signal in a time-division manner, that is, the signal S1 output by the display/touch signal output pin P1 during the display term (DP) is A signal is displayed, and the touch detecting term (TP) is a touch signal.

在一實施例中，第一多工開關1061R、1061G以及第二多工開關1061T可藉由電晶體實現，例如NMOS電晶體或PMOS電晶體，此些多工開關的導通/關閉可受控於驅動積體電路108。在本實施例中，第一多工開關1061R受控於訊號MUX_R，第一多工開關1061G受控於訊號MUX_G，以及第二多工開關1061T受控於訊號MUX_T。 此外，每一觸控訊號線1061T更通過一控制開關SWc耦接至一特定電壓Vguard，其中控制開關SWc在顯示期間DP導通，令觸控訊號線104T上的電壓維持在特定電壓Vguard(通常稱為Vcom電壓)，且控制開關SWc在觸控期間TP關閉。 In one embodiment, the first multiplexer switches 1061R, 1061G, and the second multiplexer switch 1061T can be realized by transistors, such as NMOS transistors or PMOS transistors. The on/off of these multiplexers can be controlled by The integrated circuit 108 is driven. In this embodiment, the first multiplex switch 1061R is controlled by the signal MUX_R, the first multiplex switch 1061G is controlled by the signal MUX_G, and the second multiplex switch 1061T is controlled by the signal MUX_T. In addition, each touch signal line 1061T is further coupled to a specific voltage Vguard through a control switch SWc, wherein the control switch SWc is turned on during the display period, so that the voltage on the touch signal line 104T is maintained at a specific voltage Vguard (usually called Is the Vcom voltage), and the control switch SWc is turned off during the touch period TP.

接下來將搭配第2圖所示的訊號時序圖對多工電路106的運作原理進行說明。在顯示期間DP，訊號Vcontrol轉為邏輯高準位(logical high，以下簡稱高準位)使得控制開關SWc導通，觸控偵測電極102被維持在特定電壓Vguard(通常稱為Vcom電壓)，訊號MUX_T為邏輯低準位(logical low，以下簡稱低準位)使得第二多工開關1061T關閉；第一多工開關1061R、1061G受控於訊號MUX_R、MUX_G而陸續導通，而驅動積體電路108輸出的顯示訊號會被陸續的送到畫素資料線104R、104G、104B。以第1圖中最左側的走線組104為例，在顯示期間DP，第一多工開關1061R最先導通，驅動積體電路108的顯示/觸控訊號接腳P1輸出的要寫入R子畫素電極的顯示訊號被傳送至畫素資料線104R。同時，由於畫素資料線104B未通過子多工電路106耦接至驅動積體電路108，因此要寫入R子畫素電極的顯示訊號也會被傳送至畫素資料線104B。接著，第一多工開關1061R關閉後第一多工開關1061G導通，驅動積體電路108的顯示/觸控訊號接腳P1輸出的要寫入G子畫素電極的顯示訊號被傳送至畫素資料線104G以及畫素資料線104B。再接著，第一多工開關1061G關閉，驅動積體電路108的顯示/觸控訊號接腳P1輸出的要寫入B子畫素電極的顯示訊號被傳送至畫素資料線104B。上述動作會在一個顯示期間DP內被執行至少一次。在觸 控偵測期間TP，控制開關SWc關閉，第一多工開關1061R、1061G關閉，第二多工開關1061T導通，驅動積體電路108的顯示/觸控訊號輸出接腳P1輸出的觸控訊號會被傳送至觸控訊號線104T以及畫素資料線104B上。藉由畫素資料線104B做為觸控訊號線104T的同驅，可以降低驅動積體電路108從顯示/觸控訊號輸出接腳P1看出去的電容負載(C loading)。對應於其它走線組的子多工電路的運作原理與上述相同，故不加以贅述。 Next, the operation principle of the multiplex circuit 106 will be described in conjunction with the signal timing diagram shown in FIG. 2. During the display period DP, the signal Vcontrol is converted to a logical high level (logical high, hereinafter referred to as high level) so that the control switch SWc is turned on, and the touch detection electrode 102 is maintained at a specific voltage Vguard (usually referred to as Vcom voltage). MUX_T is a logical low level (logical low, hereinafter referred to as low level) so that the second multiplex switch 1061T is turned off; the first multiplex switches 1061R and 1061G are controlled by the signals MUX_R and MUX_G to turn on successively, and drive the integrated circuit 108 The output display signal will be successively sent to the pixel data lines 104R, 104G, 104B. Taking the leftmost trace group 104 in Figure 1 as an example, during the display period DP, the first multiplex switch 1061R is turned on first, and the output of the display/touch signal pin P1 of the driving integrated circuit 108 is written to R The display signal of the sub-pixel electrode is sent to the pixel data line 104R. At the same time, since the pixel data line 104B is not coupled to the driving integrated circuit 108 through the sub-multiplex circuit 106, the display signal to be written into the R sub-pixel electrode is also transmitted to the pixel data line 104B. Then, after the first multiplex switch 1061R is turned off, the first multiplex switch 1061G is turned on, and the display signal output from the display/touch signal pin P1 of the driving integrated circuit 108 to be written into the G sub-pixel electrode is transmitted to the pixel Data line 104G and pixel data line 104B. Then, the first multiplex switch 1061G is turned off, and the display signal to be written into the B sub-pixel electrode output by the display/touch signal pin P1 of the driving integrated circuit 108 is transmitted to the pixel data line 104B. The above actions will be executed at least once in a display period DP. Touching During the control detection period TP, the control switch SWc is turned off, the first multiplex switches 1061R and 1061G are turned off, and the second multiplex switch 1061T is turned on. The touch signal output by the display/touch signal output pin P1 of the driving integrated circuit 108 will be It is sent to the touch signal line 104T and the pixel data line 104B. By using the pixel data line 104B as the co-driver of the touch signal line 104T, the capacitive load (C loading) seen by the display/touch signal output pin P1 of the driving integrated circuit 108 can be reduced. The operation principle of the sub-multiplex circuit corresponding to the other wiring groups is the same as the above, so it will not be repeated.

在一實施例中，畫素電極及觸控偵測電極102可配置於觸控顯示裝置10的一主動區域(Active Area，AA)，多工電路106及驅動積體電路108可配置於觸控顯示裝置10的一非顯示區域。 In one embodiment, the pixel electrode and the touch detection electrode 102 can be arranged in an active area (AA) of the touch display device 10, and the multiplex circuit 106 and the driving integrated circuit 108 can be arranged in the touch A non-display area of the display device 10.

請參照第3圖，第3圖繪示依據本發明另一實施例的觸控顯示裝置的示意圖。觸控顯示裝置30與觸控顯示裝置10類似，差別在於：對於每一走線組304，不通過子多工電路306耦接至驅動積體電路308的畫素資料線304B更通過一第三多工開關310耦接至觸控訊號線304T。第三多工開關310的導通/關閉可與第二多工開關3061T同步，即當第二多工開關306T導通時，第三多工開關310導通；當第二多工開關306T關閉時，第三多工開關310關閉。第三多工開關310可降低驅動積體電路308從顯示/觸控訊號輸出接腳看出去的電阻負載(R loading)。 Please refer to FIG. 3, which is a schematic diagram of a touch display device according to another embodiment of the present invention. The touch display device 30 is similar to the touch display device 10, with the difference that: for each wiring group 304, the pixel data line 304B that is not coupled to the driving integrated circuit 308 through the sub-multiplex circuit 306 further passes through a third The multiplex switch 310 is coupled to the touch signal line 304T. The on/off of the third multiplex switch 310 can be synchronized with the second multiplex switch 3061T, that is, when the second multiplex switch 306T is on, the third multiplex switch 310 is on; when the second multiplex switch 306T is off, the first The three multiplex switch 310 is turned off. The third multiplex switch 310 can reduce the resistance load (R loading) seen by the display/touch signal output pin of the driving integrated circuit 308.

請參照第4圖，第4圖繪示依據本發明另一實施例的觸控顯示裝置的示意圖。觸控顯示裝置40與觸控顯示裝置10類似，差別在於每一走線組404包括三條畫素資料線404R、404G、404B以及二條觸 控訊號線404T1、404T2，每一多工電路406包括三個第一多工開關4061R、4061G、4061B以及二個第二多工開關4061T1、4061T2，其中觸控訊號線404T1、404T2分別耦接至不同的觸控偵測電極402，且觸控訊號線404T1、404T2分別通過第二多工開關4061T1、4061T2耦接至驅動積體電路408的顯示/觸控訊號輸出接腳。在本實施例中，於顯示期間，第二多工開關4061T1、4061T2關閉，第一多工開關4061R、4061G分時導通，控制開關SWc1導通並提供Vguard電壓給觸控偵測電極402；於觸控偵測期間，第一多工開關4061R、4061G關閉，第二多工開關4061T1、4061T2分時導通。換言之，觸控顯示裝置40將觸控偵測電極402劃分為二個觸控偵測電極集合，並在觸控偵測期間分時驅動此二個觸控偵測電極集合進行觸控事件的偵測。 Please refer to FIG. 4, which is a schematic diagram of a touch display device according to another embodiment of the present invention. The touch display device 40 is similar to the touch display device 10, the difference is that each trace group 404 includes three pixel data lines 404R, 404G, 404B and two touch Control signal lines 404T1, 404T2, each multiplex circuit 406 includes three first multiplex switches 4061R, 4061G, 4061B and two second multiplex switches 4061T1, 4061T2, wherein the touch signal lines 404T1, 404T2 are respectively coupled to Different touch detection electrodes 402, and touch signal lines 404T1 and 404T2 are respectively coupled to the display/touch signal output pins of the driving integrated circuit 408 through the second multiplexers 4061T1 and 4061T2. In this embodiment, during the display period, the second multiplex switches 4061T1 and 4061T2 are turned off, the first multiplex switches 4061R and 4061G are turned on in a time division, and the control switch SWc1 is turned on and provides the Vguard voltage to the touch detection electrode 402; During the control detection period, the first multiplex switches 4061R and 4061G are turned off, and the second multiplex switches 4061T1 and 4061T2 are turned on in a time sharing period. In other words, the touch display device 40 divides the touch detection electrode 402 into two touch detection electrode sets, and drives the two touch detection electrode sets to perform touch event detection during the touch detection period. Measurement.

請參照第5圖，第5圖繪示依據本發明另一實施例的觸控顯示裝置的示意圖。觸控顯示裝置50與觸控顯示裝置40類似，差別在於每一走線組504中未通過子多工電路506耦接至驅動積體電路508的畫素資料線504B分別通過一第三多工開關510A、510B耦接至觸控訊號線504T1、504T2，其中第三多工開關510A、510B的導通及關閉係分別與對應的第二多工開關5061T1、5061T2同步。請參照第6圖所示的觸控顯示裝置50的訊號時序圖，觸控偵測期間TP被劃分為第一觸控偵測期間TP1及第二觸控偵測期間TP2。在第一觸控偵測期間TP1，第二多工開關5061T1及第三多工開關510A導通，第二多工開關5061T2及第三多工開關510B關閉，控制開關SWc1關閉，使得驅動積體電路508輸出的觸控訊號可被送至觸控偵測線504T1，而控制開關SWc2受 控於訊號Vcontrol2而在第一觸控偵測期間TP1內週期性地導通，使得觸控偵測線504T2可與觸控偵測線504T1進行同驅。相似地，在第二觸控偵測期間TP2，第二多工開關5061T2及第三多工開關510B導通，第二多工開關5061T1及第三多工開關510A關閉，控制開關SWc2關閉，使得驅動積體電路508輸出的觸控訊號可被送至觸控偵測線504T2，而控制開關SWc1受控於訊號Vcontrol1而在第二觸控偵測期間TP2內週期性地導通，使得觸控偵測線504T1可與觸控偵測線504T2進行同驅。 Please refer to FIG. 5. FIG. 5 is a schematic diagram of a touch display device according to another embodiment of the present invention. The touch display device 50 is similar to the touch display device 40, except that the pixel data lines 504B in each wiring group 504 that are not coupled to the driving integrated circuit 508 through the sub-multiplex circuit 506 respectively pass through a third multiplexer. The switches 510A and 510B are coupled to the touch signal lines 504T1 and 504T2, and the turn-on and turn-off of the third multiplex switches 510A and 510B are respectively synchronized with the corresponding second multiplex switches 5061T1 and 5061T2. Referring to the signal timing diagram of the touch display device 50 shown in FIG. 6, the touch detection period TP is divided into a first touch detection period TP1 and a second touch detection period TP2. During the first touch detection period TP1, the second multiplex switch 5061T1 and the third multiplex switch 510A are turned on, the second multiplex switch 5061T2 and the third multiplex switch 510B are turned off, and the control switch SWc1 is turned off to drive the integrated circuit The touch signal output by 508 can be sent to the touch detection line 504T1, and the control switch SWc2 is It is controlled by the signal Vcontrol2 and is periodically turned on during the first touch detection period TP1, so that the touch detection line 504T2 can be driven simultaneously with the touch detection line 504T1. Similarly, during the second touch detection period TP2, the second multiplex switch 5061T2 and the third multiplex switch 510B are turned on, the second multiplex switch 5061T1 and the third multiplex switch 510A are turned off, and the control switch SWc2 is turned off, so that the drive The touch signal output by the integrated circuit 508 can be sent to the touch detection line 504T2, and the control switch SWc1 is controlled by the signal Vcontrol1 and is periodically turned on during the second touch detection period TP2, so that the touch detection The line 504T1 can be co-driven with the touch detection line 504T2.

需要注意的是，上述實施例雖然都是採用B子畫素電極對應的畫素資料線不通過子多工電路耦接至驅動積體電路的設計，然在其他實施例中，也可以是R子畫素電極對應的畫素資料線不通過子多工電路耦接至驅動積體電路，或者G子畫素電極對應的畫素資料線不通過子多工電路耦接至驅動積體電路。此外，在一些實施例中，每一畫素電極包括的子畫素電極的數量也可以是六或是其他數值。以每一畫素電極包括六個子畫素電極為例，則每一走線組會包括六條畫素資料線及至少一條觸控訊號線，其中五條畫素資料線及觸控訊號線會通過子多工電路耦接至驅動積體電路，另一條畫素資料線則不通過子多工電路而與所述五條畫素資料線及觸控訊號線共用驅動積體電路的同一個顯示/觸控訊號輸出接腳。此外，本發明也可以應用於各種觸控偵測電極分區的數量及架構之上。 It should be noted that although the above embodiments adopt the design that the pixel data line corresponding to the B sub-pixel electrode is not coupled to the driving integrated circuit through the sub-multiplexing circuit, in other embodiments, it can also be R The pixel data line corresponding to the sub-pixel electrode is not coupled to the driving integrated circuit through the sub-multiplexing circuit, or the pixel data line corresponding to the G sub-pixel electrode is not coupled to the driving integrated circuit through the sub-multiplexing circuit. In addition, in some embodiments, the number of sub-pixel electrodes included in each pixel electrode may also be six or other values. Taking each pixel electrode including six sub-pixel electrodes as an example, each trace group will include six pixel data lines and at least one touch signal line, of which five pixel data lines and touch signal lines will pass The sub-multiplexing circuit is coupled to the driving integrated circuit, and the other pixel data line does not pass through the sub-multiplexing circuit and shares the same display/touch of the driving integrated circuit with the five pixel data lines and the touch signal line. Control signal output pin. In addition, the present invention can also be applied to the number and structure of various touch detection electrode partitions.

總結來說，本發明能夠減少多工電路中多工開關的數量，進而降低成本。此外，藉由每一走線組中其中一條畫素資料線與觸控顯示線進行同驅，可降低驅動積體電路於觸控偵測期間所看到的 電容負載。此外，藉由第三多工開關的設置，可降低驅動積體電路於觸控偵測期間所看到的電阻負載。 In summary, the present invention can reduce the number of multiplex switches in the multiplex circuit, thereby reducing the cost. In addition, by co-driving one of the pixel data lines and the touch display line in each trace group, it is possible to reduce the visibility of the driving integrated circuit during touch detection. Capacitive load. In addition, through the arrangement of the third multiplex switch, the resistance load seen during the touch detection period of the driving integrated circuit can be reduced.

綜上所述，雖然本發明已以實施例揭露如上，然其並非用以限定本發明。本發明所屬技術領域中具有通常知識者，在不脫離本發明之精神和範圍內，當可作各種之更動與潤飾。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。 In summary, although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention. Those with ordinary knowledge in the technical field of the present invention can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be subject to those defined by the attached patent scope.

10:觸控偵測裝置 10: Touch detection device

102:觸控偵測電極 102: Touch detection electrode

104:走線組 104: Wiring Group

104R、104G、104B:畫素資料線 104R, 104G, 104B: pixel data line

104T:觸控訊號線 104T: Touch signal cable

106:多工電路 106: multiplex circuit

1061:子多工電路 1061: Sub-multiplexer circuit

1061R、1061G:第一多工開關 1061R, 1061G: the first multiplex switch

1061T:第二多工開關 1061T: The second multiplex switch

SWc:控制開關 SWc: control switch

Claims (9)

一種觸控顯示裝置，包括：複數個畫素電極，各該畫素電極包括N個子畫素電極；複數個觸控偵測電極；複數個走線組，對於各該走線組，包括N條畫素資料線及至少一條觸控訊號線，該些畫素資料線分別耦接至該些畫素電極的其中之一的該些子畫素電極，且該觸控訊號線耦接至該些觸控偵測電極的其中之一；一多工電路，包括複數個子多工電路，各該子多工電路包括(N-1)個第一多工開關及至少一個第二多工開關；以及一驅動積體電路，包括複數個顯示/驅動訊號輸出接腳，該些顯示/驅動訊號輸出接腳用以分時輸出顯示訊號及觸控訊號，其中對於各該走線組，該些畫素資料線的其中(N-1)條分別通過該些子多工電路的其中之一的該些第一多工開關耦接至該驅動積體電路的該些顯示/觸控訊號輸出接腳的其中之一，該些畫素資料線的其中另一條未通過該些子多工電路耦接至該驅動積體電路的該其中一顯示/觸控訊號輸出接腳，以及該至少一觸控訊號線通過該其中一子多工電路的該至少一第二多工開關耦接至該驅動積體電路的該其中一顯示/觸控訊號輸出接腳，其中各該走線組包括的該至少一觸控訊號線的數量為一，對於各該走線組，未通過該些子多工電路耦接至該驅動積體電路的該畫素資料線更通過一第三多工開關耦接至該觸控訊號線，且該第 三多工開關的導通/關閉係與該觸控訊號線所耦接的該第二多工開關同步。 A touch display device includes: a plurality of pixel electrodes, each of the pixel electrodes includes N sub-pixel electrodes; a plurality of touch detection electrodes; a plurality of wiring groups, for each of the wiring groups, including N Pixel data lines and at least one touch signal line, the pixel data lines are respectively coupled to the sub-pixel electrodes of one of the pixel electrodes, and the touch signal line is coupled to the One of the touch detection electrodes; a multiplex circuit including a plurality of sub-multiplex circuits, each of the sub-multiplex circuits includes (N-1) first multiplex switches and at least one second multiplex switch; and A driving integrated circuit, including a plurality of display/driving signal output pins, the display/driving signal output pins are used to output display signals and touch signals in a time-sharing manner. For each of the wiring groups, the pixels (N-1) of the data lines are respectively coupled to the display/touch signal output pins of the driving integrated circuit through the first multiplex switches of one of the sub-multiplex circuits One of them, the other one of the pixel data lines is not coupled to the one of the display/touch signal output pins of the driving integrated circuit through the sub-multiplex circuits, and the at least one touch signal The line is coupled to one of the display/touch signal output pins of the driving integrated circuit through the at least one second multiplex switch of one of the sub-multiplexing circuits, wherein each of the wiring groups includes the at least one The number of touch signal lines is one. For each of the wiring groups, the pixel data lines that are not coupled to the driving integrated circuit through the sub-multiplex circuits are further coupled to the drive integrated circuit through a third multiplex switch. Touch signal line, and the The on/off of the triple multiplex switch is synchronized with the second multiplex switch coupled to the touch signal line. 如申請專利範圍第1項所述之觸控顯示裝置，其中於一顯示期間，該些第一多工開關分時導通，該至少一第二多工開關關閉，該驅動積體電路通過該些顯示/觸控訊號輸出接腳分時輸出對應於該些子畫素電極的顯示訊號。 For the touch display device described in claim 1, wherein during a display period, the first multiplex switches are turned on in a time-division manner, the at least one second multiplex switch is turned off, and the driving integrated circuit passes through the The display/touch signal output pin time-sharing outputs the display signal corresponding to the sub-pixel electrodes. 如申請專利範圍第1項所述之觸控顯示裝置，其中於一觸控偵測期間，該些第一多工開關關閉，該至少一第二多工開關導通，該驅動積體電路通過該些顯示/觸控訊號輸出接腳輸出觸控訊號。 For the touch display device described in claim 1, wherein during a touch detection period, the first multiplex switches are turned off, the at least one second multiplex switch is turned on, and the driving integrated circuit passes through the Some display/touch signal output pins output touch signals. 如申請專利範圍第1項所述之觸控顯示裝置，其中該多工電路設置於該觸控顯示裝置的一非顯示區。 According to the touch display device described in claim 1, wherein the multiplexing circuit is disposed in a non-display area of the touch display device. 如申請專利範圍第1項所述之觸控顯示裝置，其中對於各該走線組，各該觸控訊號線更通過一控制開關耦接至一特定電壓，且於一顯示期間，該控制開關導通，於一觸控偵測期間，該控制開關關閉。 As for the touch display device described in claim 1, wherein for each of the wiring groups, each of the touch signal lines is further coupled to a specific voltage through a control switch, and during a display period, the control switch On, during a touch detection period, the control switch is turned off. 如申請專利範圍第1項所述之觸控顯示裝置，其中對於各該走線組，包括一R畫素資料線、一G畫素資料線及一B畫素資料線，該R畫素資料線及該G畫素資料線係通過對應的該子多工電路耦接至該驅動積體電路，該B畫素資料線不通過該些子多工電路耦接至該驅動積體電路。 For the touch display device described in item 1 of the scope of patent application, each of the wiring groups includes an R pixel data line, a G pixel data line, and a B pixel data line. The R pixel data The line and the G pixel data line are coupled to the driving integrated circuit through the corresponding sub-multiplexing circuit, and the B pixel data line is not coupled to the driving integrated circuit through the sub-multiplexing circuits. 一種觸控顯示裝置，包括：複數個畫素電極，各該畫素電極包括N個子畫素電極；複數個觸控偵測電極；複數個走線組，對於各該走線組，包括N條畫素資料線及至少一條觸控訊號線，該些畫素資料線分別耦接至該些畫素電極的其中之一的該些子畫素電極，且該觸控訊號線耦接至該些觸控偵測電極的其中之一；一多工電路，包括複數個子多工電路，各該子多工電路包括(N-1)個第一多工開關及至少一個第二多工開關；以及一驅動積體電路，包括複數個顯示/驅動訊號輸出接腳，該些顯示/驅動訊號輸出接腳用以分時輸出顯示訊號及觸控訊號，其中對於各該走線組，該些畫素資料線的其中(N-1)條分別通過該些子多工電路的其中之一的該些第一多工開關耦接至該驅動積體電路的該些顯示/觸控訊號輸出接腳的其中之一，該些畫素資料線的其中另一條未通過該些子多工電路耦接至該驅動積體電路的該其中一顯示/觸控訊號輸出接腳，以及該至少一觸控訊號線 通過該其中一子多工電路的該至少一第二多工開關耦接至該驅動積體電路的該其中一顯示/觸控訊號輸出接腳，其中各該走線組包括的該至少一觸控訊號線的數量為二或二以上，對於各該走線組，未通過該些子多工電路耦接至該驅動積體電路的該畫素資料線更分別通過一第三多工開關耦接至各該觸控訊號線，且各該第三多工開關的導通/關閉係與對應的各該觸控訊號線所耦接的該第二多工開關同步。 A touch display device includes: a plurality of pixel electrodes, each of the pixel electrodes includes N sub-pixel electrodes; a plurality of touch detection electrodes; a plurality of wiring groups, for each of the wiring groups, including N Pixel data lines and at least one touch signal line, the pixel data lines are respectively coupled to the sub-pixel electrodes of one of the pixel electrodes, and the touch signal line is coupled to the One of the touch detection electrodes; a multiplex circuit including a plurality of sub-multiplex circuits, each of the sub-multiplex circuits includes (N-1) first multiplex switches and at least one second multiplex switch; and A driving integrated circuit, including a plurality of display/driving signal output pins, the display/driving signal output pins are used to output display signals and touch signals in a time-sharing manner. For each of the wiring groups, the pixels (N-1) of the data lines are respectively coupled to the display/touch signal output pins of the driving integrated circuit through the first multiplex switches of one of the sub-multiplex circuits One of them, the other one of the pixel data lines is not coupled to the one of the display/touch signal output pins of the driving integrated circuit through the sub-multiplex circuits, and the at least one touch signal line The at least one second multiplex switch of the one of the sub-multiplex circuits is coupled to the one of the display/touch signal output pins of the drive integrated circuit, wherein the at least one touch of each of the wiring groups The number of control signal lines is two or more. For each of the wiring groups, the pixel data lines that are not coupled to the driving integrated circuit through the sub-multiplex circuits are further coupled through a third multiplex switch. It is connected to each of the touch signal lines, and the on/off of each of the third multiplex switches is synchronized with the corresponding second multiplex switch to which each of the touch signal lines is coupled. 如申請專利範圍第7項所述之觸控顯示裝置，其中於一觸控偵測期間，各該子多工電路的該些第二多工開關分時導通。 In the touch display device described in claim 7, wherein during a touch detection period, the second multiplex switches of each sub-multiplex circuit are turned on in a time sharing manner. 如申請專利範圍第8項所述之觸控顯示裝置，其中對於各該走線組，各該觸控訊號線更通過一控制開關耦接至一特定電壓，且於一顯示期間，該些控制開關導通，於一觸控偵測期間，各該控制開關於對應於所耦接的該觸控訊號線的該第二多工開關關閉時周期性地導通，且於對應於所耦接的該觸控訊號線的該第二多工開關導通時關閉。 For the touch display device described in claim 8, wherein for each of the wiring groups, each of the touch signal lines is further coupled to a specific voltage through a control switch, and during a display period, the control The switches are turned on. During a touch detection period, each of the control switches is periodically turned on when the second multiplex switch corresponding to the coupled touch signal line is turned off, and corresponds to the coupled The second multiplex switch of the touch signal line is turned off when it is turned on.
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