Touch display panel

Abstract

A touch display panel includes a substrate, a driving circuit, data lines, pixels, a first and a second transistor groups. The pixel array is arranged in an active area of the substrate, each pixel is electrically connected to one of the data lines. The first and the second transistor groups are arranged outside the active area of the substrate, the first transistor group is electrically connected between a first end of the data lines and the driving circuit, and the second transistor group is electrically connected to a second end of the data lines. The driving circuit outputs driving signals to the first transistor group to drive the data lines. When at least one data line is broken, the driving circuit transmits at least one driving signal to the second transistor group through at least one repair line to drive the at least one data line. During touch, the driving circuit outputs at least a control signal to turn off all transistors in the first and the second transistor groups.

Description

Technical Field

[0001] This invention relates to a touch display technology, and more particularly to a touch display panel. Background Technology

[0002] In-cell touch panel (e.g.) Figure 1 Embedded touch panels (10) often employ capacitive touch sensing technology. This technology uses multiple touch electrodes formed on the touch panel to detect the coordinates of the touch point based on the capacitance change between the touch point and the touch electrodes. However, in current panel structures, according to capacitive touch sensing technology, in addition to the capacitance required for touch sensing, other voltage lines or electrodes surrounding the touch electrodes also generate unnecessary parasitic capacitance. This will lead to an increased load on touch operations, reduced accuracy of touch sensing, and in severe cases, may cause abnormal touch sensing.

[0003] Currently, there are methods to reduce parasitic capacitance and touch load by inputting the same drive signal to the data line. Ideally, this method reduces capacitance; however, in practical applications, panel designs include repair lines to weld the data line to the repair line when it breaks, allowing the drive signal for the data line to be transmitted to the other side of the break via an operational amplifier. However, excessive resistance-capacitance (RC) of the repair line or coupling from other circuits can cause the repaired data drive signal to differ from the others. This results in a difference in capacitance between the touch point and the touch electrode above that data line, leading to abnormal touch signals and severely impacting touch performance. Summary of the Invention

[0004] The present invention provides a touch display panel in which transistors are added to both ends of the data line or on the repair line. This allows all or some transistors to be turned off during touch to solve the problems of data signal waveform variation and touch signal abnormality.

[0005] The touch display panel of the present invention includes a substrate, a driving circuit, multiple data lines, multiple pixels, a first transistor group, and a second transistor group. Multiple pixel arrays are arranged within an effective area of ​​the substrate, and each of the multiple pixels is electrically connected to one of the multiple data lines. The first transistor group is disposed outside the effective area of ​​the substrate and is electrically connected between a first end of each of the multiple data lines and the driving circuit. The second transistor group is disposed outside the effective area of ​​the substrate and is electrically connected to a second end of each of the multiple data lines. The driving circuit outputs multiple driving signals to the first transistor group to drive the multiple data lines. When at least one of the multiple data lines is disconnected, the driving circuit transmits at least one of the multiple driving signals to the second transistor group through at least one first repair line to drive at least one of the multiple data lines. Furthermore, during touch operation of the touch display panel, the driving circuit outputs at least a first control signal to turn off all transistors in the first transistor group and the second transistor group.

[0006] The touch display panel of the present invention includes a substrate, a driving circuit, multiple data lines, multiple pixels, multiple first transistors, and multiple second transistors. The first ends of the multiple data lines are electrically connected to one of the multiple first output terminals of the driving circuit. Multiple pixel arrays are arranged within the effective area of ​​the substrate, and each of the multiple pixels is electrically connected to one of the multiple data lines. Multiple first transistors are disposed outside the effective area of ​​the substrate, and the first end of each of the multiple first transistors is electrically connected to one of the multiple input terminals of the driving circuit. Multiple second transistors are disposed outside the effective area of ​​the substrate, and the first end of each of the multiple second transistors is electrically connected to one of the multiple second output terminals of the driving circuit. The driving circuit outputs multiple driving signals to the first ends of the multiple data lines to drive the multiple data lines. When at least one of the multiple data lines is disconnected, the first end of at least one of the multiple data lines is fused with the second end of at least one of the multiple first transistors, and the second ends of at least one of the multiple second transistors are fused together. Furthermore, during touch operation of the touch display panel, the driving circuit outputs at least a first control signal to turn off the multiple first transistors and the multiple second transistors.

[0007] Based on the above, the touch display panel of this embodiment of the invention has multiple transistors disposed at both ends of the data line or on the repair line. During touch operation of the touch display panel, the driving circuit can turn off all or some of the transistors. Based on the architecture of the touch display panel of this embodiment, when one of the data lines is broken, during touch operation, there will be no situation where the data signal waveform changes due to excessive RC of the repair line, causing abnormal touch signal and affecting touch performance. Furthermore, during display operation, external data driving signals can be transmitted to the other side of the broken line through the repair line without affecting data reading.

[0008] To make the above features and advantages of the present invention more apparent and understandable, specific embodiments are described below in conjunction with the accompanying drawings. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of an embedded touch panel according to a known embodiment.

[0010] Figure 2 This is a schematic diagram of a touch display panel according to an embodiment of the present invention.

[0011] Figure 3A This is a schematic diagram of a touch display panel according to an embodiment of the present invention.

[0012] Figure 3B According to the present invention Figure 3A A waveform diagram of the signal in the embodiment.

[0013] Figure 4A This is a schematic diagram of a touch display panel according to an embodiment of the present invention.

[0014] Figure 4B According to the present invention Figure 4A A waveform diagram of the signal in the embodiment.

[0015] Figure 5A This is a schematic diagram of a touch display panel according to an embodiment of the present invention.

[0016] Figure 5B According to the present invention Figure 5A A waveform diagram of the signal in the embodiment.

[0017] Figure 6A This is a schematic diagram of a touch display panel according to an embodiment of the present invention.

[0018] Figure 6B According to the present invention Figure 6A A waveform diagram of the signal in the embodiment.

[0019] Figure 7 This is a schematic diagram of a touch display panel according to an embodiment of the present invention.

[0020] Figure 8A This is a schematic diagram of a touch display panel according to an embodiment of the present invention.

[0021] Figure 8B According to the present invention Figure 8A A waveform diagram of the signal in the embodiment.

[0022] Figure 9A This is a schematic diagram of a touch display panel according to an embodiment of the present invention.

[0023] Figure 9B According to the present invention Figure 9A A waveform diagram of the signal in the embodiment.

[0024] Figure 10A This is a schematic diagram of a touch display panel according to an embodiment of the present invention.

[0025] Figure 10B According to the present invention Figure 10A A waveform diagram of the signal in the embodiment.

[0026] Figure 11A This is a schematic diagram of a touch display panel according to an embodiment of the present invention.

[0027] Figure 11B According to the present invention Figure 11A A waveform diagram of the signal in the embodiment.

[0028] [Symbol Explanation]

[0029] 10: Embedded Touch Panel

[0030] 100, 200, 300, 400, 500, 600, 700, 800, 900, 1000: Touch display panel; 110: Substrate

[0031] 120: Printed Circuit Board

[0032] 130: Drive circuit

[0033] 140: Flexible Printed Circuit Board

[0034] 150, 170, 610, 630: Transistor Groups

[0035] 310: Touch switch circuit

[0036] 810: Latch circuit

[0037] AA: Valid area

[0038] BA: Surrounding Area

[0039] CS1, CS2: Control signals

[0040] CVS: Common Voltage Signal

[0041] DL, DL1-DL4: Data cables

[0042] DS, DS1-DS4: Drive signals

[0043] DSS1, DSS2: Data selection signals

[0044] DT: Display period

[0045] GS: Gating signal

[0046] IN1, IN2: Input terminals

[0047] N1, N1T1, N1T2, N1T3, N1T4: First end

[0048] N2, N2T1, N2T2, N2T3, N2T4: Second end

[0049] OP, OP1, OP2: Operational amplifiers

[0050] OUT11-OUT14, OUT21, OUT22, OUT3: Output terminals

[0051] PX, PX11-PX14, PX21-PX24, PX31-PX34: pixels

[0052] RL, RL11, RL12, RL21, RL22: Repair lines

[0053] T11-T14, T21-T24, T31-T34, T41-T44: Transistors

[0054] TCS: Touchscreen co-drive signal

[0055] TSS: Touch switch signal

[0056] TT: During touch Detailed Implementation

[0057] It should be understood that although the terms “first,” “second,” “third,” etc., may be used herein to describe various elements, components, regions, layers, and / or parts, these elements, components, regions, and / or parts should not be limited by these terms. These terms are used only to distinguish one element, component, region, layer, or part from another. Therefore, “first element,” “first component,” “first region,” “first layer,” or “first part” discussed below may be referred to as “second element,” “second component,” “second region,” “second layer,” or “second part” or part without departing from the teachings of this document.

[0058] The terminology used herein is for the purpose of describing particular embodiments only and is not restrictive. As used herein, unless the content clearly indicates otherwise, the singular forms “a,” “an,” and “the” are intended to include the plural forms, including “at least one.” “Or” means “and / or.” As used herein, the term “and / or” includes any and all combinations of one or more of the associated listed items. It should also be understood that, when used in this specification, the terms “comprising” and / or “including” specify the presence of the stated features, areas, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, areas, integrals, steps, operations, elements, components, and / or combinations thereof.

[0059] Unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. It will be further understood that terms such as those defined in commonly used dictionaries should be interpreted as having meanings consistent with their meanings in the context of the relevant technology and this invention, and will not be interpreted as having idealized or overly formal meanings unless expressly defined herein.

[0060] Figure 2 This is a schematic diagram of a touch display panel according to an embodiment of the present invention. Please refer to... Figure 2 The touch display panel 100 includes a substrate 110, multiple data lines DL, multiple pixels PX, a driving circuit 130, a transistor group 150, and a transistor group 170. The substrate 110 has an effective area AA and a peripheral area BA outside the effective area AA. The pixel PX array is arranged within the effective area AA, and each pixel PX is electrically connected to one of the data lines DL. Both transistor groups 150 and 170 are disposed in the peripheral area BA. Transistor group 150 is electrically connected between the first terminal N1 of the data line DL and the driving circuit 130, and transistor group 170 is electrically connected to the second terminal N2 of the data line DL.

[0061] In this embodiment, the driving circuit 130 outputs multiple driving signals DS to the transistor group 150 to drive multiple data lines DL. When at least one of the data lines DL is disconnected, the driving circuit 130 transmits at least one driving signal DS to the transistor group 170 through at least one repair line RL to drive at least one of the data lines DL (i.e., the disconnected data line). Furthermore, in this embodiment, during touch operation of the touch display panel 100, the driving circuit 130 outputs at least one control signal CS1 to turn off all transistors in the transistor groups 150 and 170.

[0062] The touch display panel 100 provided in this embodiment can turn off all transistors during touch. At this time, the external data drive signal DS cannot be input to the effective area AA, so all data lines DL are floating. Based on the architecture of the touch display panel 100 in this embodiment, when one of the data lines DL is broken, there will be no situation where the data signal waveform changes due to excessive RC of the repair line, causing abnormal touch signal and affecting touch performance.

[0063] In one embodiment, the touch display panel 100 further includes a printed circuit board (PCB) 120 and at least one operational amplifier OP. The operational amplifier OP is disposed on the PCB 120 and electrically connected between the driving circuit 130 and the transistor group 170. The operational amplifier OP receives at least one driving signal DS from the driving circuit 130 and transmits the amplified at least one driving signal DS to the transistor group 170.

[0064] In one embodiment, the driving circuit 130 may be disposed on the substrate 110 or on the printed circuit board 120, and this embodiment is not limited thereto. In one embodiment, the touch display panel 100 further includes a flexible printed circuit board (FPC) 140, through which the operational amplifier OP receives at least one driving signal DS from the driving circuit 130.

[0065] It should be noted that those skilled in the art can make appropriate adjustments based on the actual application scenario. Figure 2 The number of data lines DL, pixels PX, and patch lines RL shown is not limited in this embodiment. Furthermore, the specific component structures in transistor groups 150 and 170, and their operational relationships with the drive circuit 130, will be discussed later. Figures 3A to 6B Further details will be provided. And for the sake of simplicity, Figure 3A , Figure 4A , Figure 5A and Figure 6A Only data lines DL1-DL4, pixels PX11-PX14, PX21-PX24, PX31-PX34, and patch lines RL11 and RL12 are shown as examples.

[0066] Figure 3A This is a schematic diagram of a touch display panel according to an embodiment of the present invention. Figure 3B According to the present invention Figure 3A A waveform diagram of the signal in the embodiment. Please refer to... Figure 3A Transistor group 150 includes multiple transistors T11-T14, and transistor group 170 includes multiple transistors T21-T24.

[0067] Specifically, the first terminal N1T1 of each of transistors T11-T14 is electrically connected to one of the output terminals OUT11-OUT14 of the drive circuit 130 to receive drive signals DS1-DS4. The second terminal N2T1 of each of transistors T11-T14 is electrically connected to the first terminal N1 of each of data lines DL1-DL4 to output drive signals DS1-DS4 to data lines DL1-DL4.

[0068] When at least one of data lines DL1-DL4 (e.g., data line DL4) is disconnected, the first terminal N1T1 of at least one of transistors T11-T14 (e.g., transistor T14) is fused to at least one repair line RL21, RL22 (e.g., repair line RL22) to electrically connect at least one input terminal IN1, IN2 (e.g., input terminal IN2) of the drive circuit 130. The input terminal (e.g., input terminal IN2) of the drive circuit 130 receives at least one drive signal DS1-DS4 (e.g., drive signal DS4).

[0069] Furthermore, the first terminal N1T2 of at least one of transistors T21-T24 (e.g., transistor T24) is fused to at least one repair line RL11, RL12 (e.g., repair line RL12) to electrically connect one of at least one output terminal OUT21, OUT22 (e.g., output terminal OUT22) of the drive circuit 130 via the repair line (e.g., repair line RL12) to receive at least one drive signal DS1-DS4 (e.g., drive signal DS4). The second terminal N2T2 of each of transistors T21-T24 is correspondingly electrically connected to the second terminal N2 of each of data lines DL1-DL4 to output at least one drive signal DS1-DS4 (e.g., drive signal DS4) to at least one of data lines DL1-DL4 (e.g., data line DL4). It should be emphasized again that at least one of transistors T21-T24 (e.g., transistor T24) corresponds to at least one of data lines DL1-DL4 (e.g., data line DL4).

[0070] In one embodiment, at least one operational amplifier OP1, OP2 (e.g., operational amplifier OP2) receives at least one drive signal DS1-DS4 (e.g., drive signal DS4) from at least one output terminal OUT21, OUT22 (e.g., output terminal OUT22) of the drive circuit 130 and transmits the amplified at least one drive signal DS1-DS4 (e.g., drive signal DS4) to the transistor group 170.

[0071] It is worth noting that the touch display panel 200 illustrated in this embodiment is merely an example. In one embodiment, multiple data cables DL1-DL4 may be disconnected simultaneously, and the same applies as described above; this embodiment does not impose any limitations on this.

[0072] In one embodiment, the drive circuit 130 outputs a control signal CS1 to the control terminals of each of transistors T11-T14 and each of transistors T21-T24. Please also refer to... Figure 3A and Figure 3B During the touch operation period TT of the touch display panel 200, the control signal CS1 output by the driving circuit 130 is at a low level, and during the display period DT of the touch display panel 200, the control signal CS1 output by the driving circuit 130 is at a high level.

[0073] The touch display panel 200 provided in this embodiment can turn off all transistors during touch operation (TT). At this time, the external data drive signals DS1-DS4 cannot be input to the valid area AA, so the data lines DL1-DL4 are all floating. Alternatively, the touch display panel 200 provided in this embodiment can turn on all transistors during display operation (DT), and the external data drive signals DS1-DS4 will be input to the valid area AA.

[0074] Based on the architecture of the touch display panel 200 of this embodiment, when one of the data lines DL1-DL4 is broken, during the touch period TT, there will be no situation where the data signal waveform changes due to the excessive RC of the repair line and the touch signal becomes abnormal, thus affecting the touch performance. Furthermore, during the display period DT, the external data drive signals DS1-DS4 can be transmitted to the other side of the broken line through the repair line without affecting the data reading.

[0075] Figure 4A This is a schematic diagram of a touch display panel according to an embodiment of the present invention. Figure 4B According to the present invention Figure 4A A waveform diagram of the signal in the embodiment. Please refer to... Figure 4A Transistor groups 150 and 170 are the same as Figure 3A The transistor groups 150 and 170. The touch display panel 300 of this embodiment and... Figure 3A The main difference between the touch display panel 200 and the touch display panel 300 is that the touch display panel 300 also includes a touch switch circuit 310, and the driving circuit 130 uses the touch switch signal TSS for the touch switch circuit 310 as a control signal CS1 to output to the control terminal of each of transistors T11-T14 and the control terminal of each of transistors T21-T24.

[0076] Please refer to the following at the same time Figure 4A and Figure 4BDuring the touch operation period TT of the touch display panel 300, the touch switch signal TSS output by the driving circuit 130 is at a low level, and during the display period DT of the touch display panel 300, the touch switch signal TSS output by the driving circuit 130 is at a high level.

[0077] Figure 5A This is a schematic diagram of a touch display panel according to an embodiment of the present invention. Figure 5B According to the present invention Figure 5A A waveform diagram of the signal in the embodiment. Please refer to... Figure 5A Transistor group 170 is the same as Figure 3A The transistor group 170. The touch display panel 400 of this embodiment and... Figure 3A The main difference in the touch display panel 200 lies in the specific component structure in the transistor group 150 and its actuation relationship with the driving circuit 130.

[0078] Transistor group 150 includes multiple transistors T11-T14, T31, and T32. Specifically, the first terminals N1T1 of adjacent transistors T11-T14 are electrically connected to each other and correspondingly electrically connected to one of the output terminals OUT11 and OUT12 of the drive circuit 130 to receive drive signals DS1 and DS2. For example, the first terminals N1T1 of transistors T11 and T12 are electrically connected to each other and electrically connected to the output terminal OUT11 of the drive circuit 130 to receive drive signal DS1, and the first terminals N1T1 of transistors T13 and T14 are electrically connected to each other and electrically connected to the output terminal OUT12 of the drive circuit 130 to receive drive signal DS2. The second terminal N2T1 of each of transistors T11-T14 is correspondingly electrically connected to the first terminal N1 of each of data lines DL1-DL4 to output drive signals DS1 and DS2 to data lines DL1-DL4. The first terminal N1T3 of each of transistors T31 and T32 is electrically connected to one of the input terminals IN1 and IN2 of the drive circuit 130.

[0079] When at least one of data lines DL1-DL4 (e.g., data line DL4) is disconnected, the second terminal N2T3 of at least one of transistors T31 and T32 (e.g., transistor T32) is fused to the first terminal N1 of at least one of data lines DL1-DL4 (e.g., data line DL4) to electrically connect at least one of the plurality of input terminals IN1 and IN2 of the drive circuit 130 (e.g., input terminal IN2) via the transistor (e.g., transistor T32). At least one of the plurality of input terminals IN1 and IN2 of the drive circuit 130 (e.g., input terminal IN2) receives at least one drive signal DS1 or DS2 (e.g., drive signal DS2).

[0080] Furthermore, the first terminal N1T2 of at least one of transistors T21-T24 (e.g., transistor T24) is fused to at least one repair line RL11-RL12 (e.g., repair line RL12) to electrically connect one of at least one output terminal OUT21, OUT22 (e.g., output terminal OUT22) of the drive circuit 130 via the repair line (e.g., repair line RL12) to receive at least one drive signal DS1, DS2 (e.g., drive signal DS2). The second terminal N2T2 of each of transistors T21-T24 is correspondingly electrically connected to the second terminal N2 of each of data lines DL1-DL4 to output at least one drive signal DS1, DS2 (e.g., drive signal DS2) to at least one of data lines DL1-DL4 (e.g., data line DL4). It should be emphasized again that at least one of transistors T21-T24 (e.g., transistor T24) corresponds to at least one of data lines DL1-DL4 (e.g., data line DL4).

[0081] In one embodiment, the operation modes of operational amplifiers OP1 and OP2 are the same as... Figure 3A The descriptions are the same, so I will not repeat them here.

[0082] It is worth noting that the touch display panel 400 illustrated in this embodiment is merely an example. In one embodiment, multiple data cables DL1-DL4 may be disconnected simultaneously, and the same applies as described above; this embodiment does not impose any limitations on this.

[0083] In one embodiment, the drive circuit 130 outputs a control signal CS1 to the control terminal of each of transistors T21-T24 and the control terminal of each of transistors T31 and T32, outputs a data selection signal DSS1 to the control terminal of one of the two adjacent transistors T11-T14 (e.g., transistors T11 and T13), and outputs a data selection signal DSS2 to the control terminal of the other of the two adjacent transistors T11-T14 (e.g., transistors T12 and T14).

[0084] Please refer to the following at the same time Figure 5A and Figure 5B During the touch operation period TT of the touch display panel 400, the control signal CS1, the data selection signal DSS1, and the data selection signal DSS2 output by the driving circuit 130 are at a low level. During the display period DT of the touch display panel 400, the control signal CS1 output by the driving circuit 130 is at a high level, and the data selection signals DSS1 and DSS2 are alternately turned on or off for adjacent pairs in T11-T14.

[0085] The touch display panel 400 provided in this embodiment can turn off all transistors during touch operation (TT). At this time, external data drive signals DS1 and DS2 cannot be input to the valid area AA, so data lines DL1-DL4 are all floating. In addition, the touch display panel 400 provided in this embodiment can turn on some transistors during display operation (DT), and external data drive signals DS1 and DS2 will be input to the valid area AA in turn.

[0086] Based on the architecture of the touch display panel 400 of this embodiment, when one of the data lines DL1-DL4 is broken, during the touch period TT, there will be no situation where the data signal waveform changes due to the excessive RC of the repair line and the touch signal becomes abnormal, thus affecting the touch performance. Furthermore, during the display period DT, the external data drive signals DS1-DS2 can be transmitted to the other side of the broken line through the repair line without affecting the data reading.

[0087] Figure 6A This is a schematic diagram of a touch display panel according to an embodiment of the present invention. Figure 6B According to the present invention Figure 6A A waveform diagram of the signal in the embodiment. Please refer to... Figure 6A Transistor groups 150 and 170 are the same as Figure 5A The transistor groups 150 and 170. The touch display panel 500 of this embodiment and... Figure 5A The main difference between the touch display panel 400 and the touch display panel 500 is that the touch display panel 500 also includes a touch switch circuit 310, and the driving circuit 130 uses the touch switch signal TSS for the touch switch circuit 310 as a control signal CS1 to output to the control terminal of each of transistors T21-T24 and the control terminal of each of transistors T31 and T32.

[0088] Please refer to the following at the same time Figure 6A and Figure 6B During the touch operation period TT of the touch display panel 500, the touch switch signal TSS, the data selection signal DSS1, and the data selection signal DSS2 output by the driving circuit 130 are at a low level. During the display period DT of the touch display panel 500, the touch switch signal TSS output by the driving circuit 130 is at a high level, and the data selection signals DSS1 and DSS2 are interactively turned on or off, respectively, the two adjacent signals in T11-T14.

[0089] Figure 7 This is a schematic diagram of a touch display panel according to an embodiment of the present invention. Please refer to... Figure 7 The substrate 110, multiple data lines DL, multiple pixels PX, driving circuit 130, transistor group 150, and transistor group 170 are the same as those in the original text. Figure 2The substrate 110, multiple data lines DL, multiple pixels PX, driving circuit 130, transistor group 150, and transistor group 170 are included. The touch display panel 600 of this embodiment... Figure 2 The main difference between the touch display panel 100 and the touch display panel 600 is that the touch display panel 600 also includes transistor group 610 and transistor group 630. Both transistor group 610 and transistor group 630 are located in the peripheral area BA. Transistor group 610 is electrically connected between the first end N1 of the data line DL and the driving circuit 130, and transistor group 630 is electrically connected between the second end N2 of the data line DL and the driving circuit 130.

[0090] In this embodiment, the driving circuit 130 outputs multiple driving signals DS to the transistor group 150 to drive multiple data lines DL. When at least one of the data lines DL is disconnected, the driving circuit 130 transmits at least one driving signal DS to the transistor group 170 through at least one repair line RL to drive at least one of the data lines DL (i.e., the disconnected data line). Furthermore, in this embodiment, during touch operation of the touch display panel 600, the driving circuit 130 outputs a control signal CS1 to turn off all transistors in the transistor groups 150 and 170, outputs a control signal CS2 to turn on all transistors in the transistor groups 610 and 630, and outputs a touch co-drive signal TCS (at this time, the common voltage signal CVS is the touch co-drive signal TCS) to the transistor groups 610 and 630 to drive the data lines DL.

[0091] The touch display panel 600 provided in this embodiment can turn off all transistors in transistor groups 150 and 170 and turn on all transistors in transistor groups 610 and 630 during touch operation. At this time, the touch co-drive signal TCS will be input to the effective area AA. Based on the architecture of the touch display panel 600 in this embodiment, when one of the data lines DL is broken, the repair line will not affect the touch co-drive signal TCS on the data line DL, thus resolving the problem of data signal inconsistency (waveform variation). Furthermore, the touch co-drive signal TCS is still present on the data line DL, which maintains the touch performance of the touch display panel 600.

[0092] In one embodiment, the touch display panel 600 may be similar to the touch display panel 100, and may also include a printed circuit board 120, at least one operational amplifier OP, or a flexible printed circuit board 140, which will not be described in detail here.

[0093] It should be noted that those skilled in the art can make appropriate adjustments based on the actual application scenario. Figure 7The number of data lines D, pixels PX, and patch lines R1 shown is not limited in this embodiment. Furthermore, the specific component structures in transistor groups 150, 170, 610, and 630, and their operational relationships with the drive circuit 130, will be discussed later. Figures 8A to 9B Further details will be provided. And for the sake of simplicity, Figure 8A and Figure 9A Only data lines DL1-DL4, pixels PX11-PX14, PX21-PX24, PX31-PX34, and patch lines RL11 and RL12 are shown as examples.

[0094] Figure 8A This is a schematic diagram of a touch display panel according to an embodiment of the present invention. Figure 8B According to the present invention Figure 8A A waveform diagram of the signal in the embodiment. Please refer to... Figure 8A The specific component structures in transistor groups 150 and 170 are the same as those in transistor groups 150 and 170. Figure 3A The specific component structures in transistor groups 150 and 170 will not be described in detail here. Transistor group 610 includes multiple transistors T31-T34, and transistor group 630 includes multiple transistors T41-T44.

[0095] Specifically, the first terminal N1T3 of each of transistors T31-T34 is electrically connected to the output terminal OUT3 of the drive circuit 130 to receive the common voltage signal CVS, and the second terminal N2T3 of each of transistors T31-T34 is correspondingly electrically connected to the first terminal N1 of each of data lines DL1-DL4. The first terminal N1T4 of each of transistors T41-T44 is electrically connected to the output terminal OUT3 of the drive circuit 130 to receive the common voltage signal CVS, and the second terminal N2T4 of each of transistors T41-T44 is correspondingly electrically connected to the second terminal N2 of each of data lines DL1-DL4.

[0096] When at least one of data lines DL1-DL4 (e.g., data line DL4) is disconnected, the first terminal N1T1 of at least one of transistors T11-T14 (e.g., transistor T14) is fused to at least one repair line RL21, RL22 (e.g., repair line RL22) to electrically connect at least one input terminal IN1, IN2 (e.g., input terminal IN2) of the drive circuit 130. The input terminal (e.g., input terminal IN2) of the drive circuit 130 receives at least one drive signal DS1-DS4 (e.g., drive signal DS4).

[0097] Furthermore, the first terminal N1T2 of at least one of transistors T21-T24 (e.g., transistor T24) is fused to at least one repair line RL11, RL12 (e.g., repair line RL12) to electrically connect one of at least one output terminal OUT21, OUT22 (e.g., output terminal OUT22) of the drive circuit 130 via the repair line (e.g., repair line RL12) to receive at least one drive signal DS1-DS4 (e.g., drive signal DS4). The second terminal N2T2 of each of transistors T21-T24 is correspondingly electrically connected to the second terminal N2 of each of data lines DL1-DL4 to output at least one drive signal DS1-DS4 (e.g., drive signal DS4) to at least one of data lines DL1-DL4 (e.g., data line DL4). It should be emphasized again that at least one of transistors T21-T24 (e.g., transistor T24) corresponds to at least one of data lines DL1-DL4 (e.g., data line DL4).

[0098] In one embodiment, the operation modes of operational amplifiers OP1 and OP2 are the same as... Figure 3A The descriptions are the same, so I will not repeat them here.

[0099] It is worth noting that the touch display panel 700 illustrated in this embodiment is merely an example. In one embodiment, multiple data cables DL1-DL4 may be disconnected simultaneously, and the same applies as described above; this embodiment does not impose any limitations on this.

[0100] In one embodiment, the drive circuit 130 outputs control signal CS1 to the control terminals of each of transistors T11-T14 and each of transistors T21-T24, and outputs control signal CS2 to the control terminals of each of transistors T31-T34 and each of transistors T41-T44. Please also refer to... Figure 8A and Figure 8B During the touch operation period TT of the touch display panel 700, the control signal CS1 output by the touch display panel 700 is at a low level, the control signal CS2 output is at a high level, and the common voltage signal CVS output is the touch drive signal TCS. During the display operation period DT of the touch display panel 700, the control signal CS1 output by the touch display panel 700 is at a high level, and the control signal CS2 output is at a low level.

[0101] The touch display panel 700 provided in this embodiment can, during touch TT, turn off all transistors in transistor groups 150 and 170, and turn on all transistors in transistor groups 610 and 630. At this time, the touch drive signal TCS will be input to the active area AA. Furthermore, the touch display panel 700 provided in this embodiment can, during display DT, turn on all transistors in transistor groups 150 and 170, and turn off all transistors in transistor groups 610 and 630. At this time, external data drive signals DS1-DS4 will be input to the active area AA.

[0102] Based on the architecture of the touch display panel 700 of this embodiment, when one of the data lines DL1-DL4 breaks, during touch operation TT, the repair line does not affect the touch co-drive signal TCS on data lines DL1-DL4, thus resolving the problem of data signal inconsistency (waveform variation). Furthermore, since data lines DL1-DL4 are the touch co-drive signal TCS, this maintains the touch performance of the touch display panel 700. Also, during display operation DT, external data drive signals DS1-DS4 can be transmitted to the other side of the broken line through the repair line without affecting data reading.

[0103] Figure 9A This is a schematic diagram of a touch display panel according to an embodiment of the present invention. Figure 9B According to the present invention Figure 9A A waveform diagram of the signal in the embodiment. Please refer to... Figure 9A Transistor groups 150, 170, 610, and 630 are the same as Figure 8A The transistor groups are 150, 170, 610, and 630. The touch display panel 800 of this embodiment and... Figure 8A The main difference between the touch display panel 700 and the touch display panel 800 is that the touch display panel 800 also includes a touch switch circuit 310 and a latch circuit 810. The driving circuit 130 uses the touch switch signal TSS used for the touch switch circuit 310 as the control signal CS1 to output to the control terminals of each of transistors T11-T14 and each of transistors T21-T24. The driving circuit 130 uses the gate signal GS used for the latch circuit 810 as the control signal CS2 to output to the control terminals of each of transistors T31-T34 and each of transistors T41-T44.

[0104] Please refer to the following at the same time Figure 9A and Figure 9BDuring the touch operation period TT of the touch display panel 800, the touch switch signal TSS output by the touch display panel 800 is low, the gating signal GS output by the touch display panel 800 is high, and the common voltage signal CVS output by the touch display panel 800 is the touch drive signal TCS. During the display operation period DT of the touch display panel 800, the touch switch signal TSS output by the touch display panel 800 is high, and the gating signal GS output by the touch display panel 800 is low.

[0105] Figure 10A This is a schematic diagram of a touch display panel according to an embodiment of the present invention. Figure 10B According to the present invention Figure 10A A waveform diagram of the signal in the embodiment. Please refer to... Figure 10A The touch display panel 900 includes a substrate 110, a driving circuit 130, multiple data lines DL1-DL4, multiple pixels PX11-PX14, PX21-PX24, PX31-PX34, and multiple transistors T11, T12, T21, and T22. The substrate 110 has an effective area AA and a peripheral area BA outside the effective area AA. Pixels PX11-PX14, PX21-PX24, and PX31-PX34 are arranged in an array within the effective area AA, and each of the pixels PX11-PX14, PX21-PX24, and PX31-PX34 is electrically connected to one of the data lines DL1-DL4. Transistors T11, T12, T21, and T22 are all located in the peripheral area BA. The first terminal N1T1 of each of transistors T11 and T12 is electrically connected to one of the multiple input terminals IN1 and IN2 of the driving circuit 130. The first terminal N1T2 of each of transistors T21 and T22 is electrically connected to one of the multiple output terminals OUT21 and OUT22 of the driving circuit 130.

[0106] Specifically, the driving circuit 130 outputs driving signals DS1-DS4 to the first terminal N1 of data lines DL1-DL4. When at least one of the data lines DL1-DL4 (e.g., data line DL4) is disconnected, the first terminal N1 of at least one of the data lines DL1-DL4 (e.g., data line DL4) is fused with the second terminal N2T1 of at least one of transistors T11 and T12 (e.g., transistor T12), and the second terminal N2 of at least one of the data lines DL1-DL4 (e.g., data line DL4) is fused with the second terminal N2T2 of at least one of transistors T21 and T22 (e.g., transistor T22). Furthermore, during touch operation of the touch display panel 900, the driving circuit 130 outputs a control signal CS1 to turn off transistors T11, T12, T21, and T22.

[0107] In one embodiment, the operation modes of operational amplifiers OP1 and OP2 are the same as... Figure 3A The descriptions are the same, so I will not repeat them here.

[0108] It is worth noting that the touch display panel 900 illustrated in this embodiment is merely an example. In one embodiment, multiple data cables DL1-DL4 may be disconnected simultaneously, and the same applies as described above; this embodiment does not impose any limitations on this.

[0109] In one embodiment, the drive circuit 130 outputs a control signal CS1 to the control terminals of each of transistors T11 and T12, and to the control terminals of each of transistors T21 and T22. Please also refer to... Figure 10A and Figure 10B During the touch operation period TT of the touch display panel 900, the control signal CS1 output by the driving circuit 130 is at a low level, and during the display period DT of the touch display panel 900, the control signal CS1 output by the driving circuit 130 is at a high level.

[0110] The touch display panel 900 provided in this embodiment can turn off all transistors during touch operation (TT), at which time the repair line of the broken data line is floating. Furthermore, the touch display panel 900 provided in this embodiment can turn on all transistors during display operation (DT), and external data drive signals DS1-DS4 will be input to the valid area AA.

[0111] Based on the architecture of the touch display panel 900 of this implementation, when one of the data lines DL1-DL4 is broken, during the touch period TT, there will be no situation where the data signal waveform changes due to the excessive RC of the repair line and the touch signal becomes abnormal, thus affecting the touch performance. Furthermore, during the display period DT, the external data drive signals DS1-DS4 can be transmitted to the other side of the broken line through the repair line without affecting the data reading.

[0112] In one embodiment, similar to Figure 4A The driving circuit 130 uses the touch switch signal TSS used for the touch switch circuit 310 as the control signal CS1 to output to the control terminal of each of transistors T11 and T12 and the control terminal of each of transistors T21 and T22.

[0113] Figure 11A This is a schematic diagram of a touch display panel according to an embodiment of the present invention. Figure 11B According to the present invention Figure 11A A waveform diagram of the signal in the embodiment. Please refer to... Figure 11A The touch display panel 1000 in this embodiment and Figure 10AThe main difference between the touch display panel 900 and the touch display panel 1000 is that the touch display panel 1000 also includes multiple transistors T31, T32, T41, and T42. The first terminal N1T3 of each of transistors T31 and T32 is electrically connected to the output terminal OUT3 of the drive circuit 130 to receive the common voltage signal CVS. The second terminal N2T3 of each of transistors T31 and T32 is electrically connected to the second terminal N2T1 of each of transistors T11 and T12. The first terminal N1T4 of each of transistors T41 and T42 is electrically connected to the output terminal OUT3 of the drive circuit 130 to receive the common voltage signal CVS. The second terminal N2T4 of each of transistors T41 and T42 is electrically connected to the second terminal N2T2 of each of transistors T21 and T22. During touch operation of the touch display panel 1000, the driving circuit 130 outputs a control signal CS2 to turn on transistors T31, T32, T41, and T42, and the common voltage signal CVS is the touch co-drive signal TCS.

[0114] In one embodiment, the operation modes of operational amplifiers OP1 and OP2 are the same as... Figure 3A The descriptions are the same, so I will not repeat them here.

[0115] It is worth noting that the touch display panel 1000 illustrated in this embodiment is merely an example. In one embodiment, multiple data cables DL1-DL4 may be disconnected simultaneously, and the same applies as described above; this embodiment does not impose any limitations on this.

[0116] In one embodiment, the drive circuit 130 outputs control signal CS1 to the control terminals of each of transistors T11 and T12 and each of transistors T21 and T22, outputs control signal CS2 to the control terminals of each of transistors T31 and T32 and each of transistors T41 and T42, and outputs a common voltage signal CVS to the first terminal N1T3 of each of transistors T31 and T32 and the first terminal N1T4 of each of transistors T41 and T42. Please also refer to... Figure 11A and Figure 11B During the touch operation period TT of the touch display panel 1000, the control signal CS1 output by the driving circuit 130 is at a low level, the control signal CS2 output by the driving circuit 130 is at a high level, and the output common voltage signal CVS is the touch driving signal TCS. During the display operation period DT of the touch display panel 1000, the control signal CS1 output by the driving circuit 130 is at a high level, and the control signal CS2 output by the driving circuit 130 is at a low level.

[0117] The touch display panel 1000 provided in this embodiment can, during touch operation TT, turn off transistors T11, T12, T21, and T22 while turning on transistors T31, T32, T41, and T42. At this time, the touch drive signal TCS will be input to the disconnected data line. Furthermore, the touch display panel 1000 provided in this embodiment can also turn on transistors T11, T12, T21, and T22 while turning off transistors T31, T32, T41, and T42. At this time, external data drive signals DS1-DS4 will be input to the effective area AA.

[0118] Based on the architecture of the touch display panel 1000 of this embodiment, when one of the data lines DL1-DL4 breaks, during touch operation TT, the repair line does not affect the touch co-drive signal TCS on data lines DL1-DL4, thus resolving the problem of data signal inconsistency (waveform variation). Furthermore, since data lines DL1-DL4 are the touch co-drive signal TCS, the touch performance of the touch display panel 1000 can be maintained. Also, during display operation DT, external data drive signals DS1-DS4 can be transmitted to the other side of the broken line through the repair line without affecting data reading.

[0119] In one embodiment, similar to Figure 9A The driving circuit 130 uses the touch switch signal TSS used for the touch switch circuit 310 as the control signal CS1 to output to the control terminal of each of transistors T11, T12, T21, and T22, and uses the gate signal GS used for the latch circuit 810 as the control signal CS2 to output to the control terminal of each of transistors T31, T32, T41, and T42.

[0120] It should be noted that, for the sake of simplicity, Figure 10A and Figure 11A Only data lines DL1-DL4, pixels PX11-PX14, PX21-PX24, PX31-PX34, and patch lines RL11 and RL12 are shown as examples.

[0121] In summary, the touch display panel of the present invention has multiple transistors disposed at both ends of the data line or on the repair line. During touch operation of the touch display panel, the driving circuit can turn off all or some of the transistors. Based on the architecture of the touch display panel of this embodiment, when one of the data lines is broken, during touch operation, there will be no situation where the data signal waveform changes due to excessive RC of the repair line, causing abnormal touch signal and affecting touch performance. Furthermore, during display, external data driving signals can be transmitted to the other side of the broken line through the repair line without affecting data reading.

[0122] Although the present invention has been disclosed above with reference to embodiments, it is not intended to limit the present invention. Those skilled in the art can make some modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the scope defined in the appended claims.

Claims

1. A touch display panel, comprising: substrate; Drive circuit; Multiple data cables; Multiple pixels are arranged in an array within the effective area of ​​the substrate, and each of the multiple pixels is electrically connected to one of the multiple data lines; A first transistor group is disposed outside the effective area of ​​the substrate, and the first transistor group is electrically connected between the first end of the plurality of data lines and the driving circuit. as well as A second transistor group is disposed outside the effective region of the substrate, and the second transistor group is electrically connected to the second end of the plurality of data lines. The driving circuit outputs multiple driving signals to the first transistor group to drive the multiple data lines. When at least one of the multiple data lines is disconnected, the driving circuit transmits at least one of the multiple driving signals to the second transistor group through at least one first repair line to drive the at least one of the multiple data lines. During touch operation of the touch display panel, the driving circuit outputs at least a first control signal to turn off all transistors in the first transistor group and the second transistor group.

2. The touch display panel of claim 1, wherein the second transistor group comprises: A plurality of second transistors, wherein the first terminal of at least one of the plurality of second transistors is fused to the at least one first repair line to electrically connect to one of at least one second output terminal of the driving circuit via the at least one first repair line to receive the at least one driving signal, and the second terminal of each of the plurality of second transistors is correspondingly electrically connected to the second terminal of each of the plurality of data lines to output the at least one driving signal to the at least one of the plurality of data lines. The at least one of the plurality of second transistors corresponds to the at least one of the plurality of data lines.

3. The touch display panel of claim 2, wherein the first transistor group comprises: A plurality of first transistors, wherein the first terminal of each of the plurality of first transistors is electrically connected to one of a plurality of first output terminals of the driving circuit to receive the plurality of driving signals, and the second terminal of each of the plurality of first transistors is electrically connected to the first terminal of each of the plurality of data lines to output the plurality of driving signals to the plurality of data lines, and The driving circuit outputs the first control signal to the control terminal of each of the plurality of first transistors and the control terminal of each of the plurality of second transistors.

4. The touch display panel of claim 3, wherein the driving circuit uses the touch switch signal for the touch switch circuit as the first control signal to output to the control terminal of each of the plurality of first transistors and the control terminal of each of the plurality of second transistors.

5. The touch display panel as claimed in claim 3, wherein during the touch operation of the touch display panel, the first control signal output by the driving circuit is at a low level, and during the display operation of the touch display panel, the first control signal output by the driving circuit is at a high level.

6. The touch display panel of claim 3, wherein the second terminal of at least one of the plurality of first transistors is fused to at least one second repair line to electrically connect to at least one input terminal of the driving circuit through the at least one second repair line, and the at least one input terminal of the driving circuit receives the at least one driving signal. The at least one of the plurality of first transistors corresponds to the at least one of the plurality of data lines.

7. The touch display panel as claimed in claim 2, wherein The first group of transistors includes: A plurality of first transistors, wherein the first ends of adjacent pairs of the plurality of first transistors are electrically connected to each other and correspondingly electrically connected to one of the plurality of first output terminals of the driving circuit to receive the plurality of driving signals, and the second end of each of the plurality of first transistors is correspondingly electrically connected to the first end of each of the plurality of data lines to output the plurality of driving signals to the plurality of data lines. as well as A plurality of third transistors, wherein the first terminal of each of the plurality of third transistors is electrically connected to one of the plurality of input terminals of the driving circuit, and The driving circuit outputs the first control signal to the control terminal of each of the plurality of second transistors and the control terminal of each of the plurality of third transistors, outputs a first data selection signal to the control terminal of one of the adjacent pairs of the plurality of first transistors, and outputs a second data selection signal to the control terminal of the other of the adjacent pairs of the plurality of first transistors.

8. The touch display panel of claim 7, wherein the driving circuit uses a touch switch signal for the touch switch circuit as the first control signal to output to the control terminal of each of the plurality of second transistors and the control terminal of each of the plurality of third transistors.

9. The touch display panel of claim 7, wherein during the touch operation of the touch display panel, the first control signal, the first data selection signal, and the second data selection signal output by the driving circuit are at a low level; during the display operation of the touch display panel, the first control signal output by the driving circuit is at a high level; and the first data selection signal and the second data selection signal are alternately turned on or off adjacent pairs of the plurality of first transistors.

10. The touch display panel of claim 7, wherein a second terminal of at least one of the plurality of third transistors is fused to a first terminal of at least one of the plurality of data lines to electrically connect at least one of the plurality of input terminals of the driving circuit via the at least one of the plurality of third transistors, wherein the at least one of the plurality of input terminals of the driving circuit receives the at least one driving signal.

11. The touch display panel as claimed in claim 1, further comprising: A third transistor group is disposed outside the effective area of ​​the substrate, and the third transistor group is electrically connected between the first end of the plurality of data lines and the driving circuit. as well as A fourth transistor group is disposed outside the effective area of ​​the substrate, and the fourth transistor group is electrically connected between the second terminal of the plurality of data lines and the driving circuit. During the touch operation on the touch display panel, the driving circuit outputs a second control signal to activate all transistors in the third and fourth transistor groups, and outputs a touch-driven signal to the third and fourth transistor groups to drive the multiple data lines.

12. The touch display panel as claimed in claim 11, wherein... The third group of transistors includes: A plurality of third transistors, each having a first terminal electrically connected to a third output terminal of the drive circuit to receive a common voltage signal, and a second terminal of each of the plurality of third transistors correspondingly electrically connected to the first terminal of each of the plurality of data lines. The fourth transistor group includes: A plurality of fourth transistors, wherein the first terminal of each of the plurality of fourth transistors is electrically connected to the third output terminal of the driving circuit to receive the common voltage signal, and the second terminal of each of the plurality of fourth transistors is correspondingly electrically connected to the second terminal of each of the plurality of data lines.

13. The touch display panel of claim 12, wherein the driving circuit outputs the second control signal to the control terminal of each of the plurality of third transistors and the control terminal of each of the plurality of fourth transistors.

14. The touch display panel of claim 13, wherein the driving circuit uses a gate signal for the latching circuit as the second control signal to output to the control terminal of each of the plurality of third transistors and the control terminal of each of the plurality of fourth transistors.

15. The touch display panel of claim 13, wherein during the touch operation of the touch display panel, the first control signal output by the driving circuit is at a low level, the second control signal output is at a high level, and the output common voltage signal is the touch co-drive signal. During the display of the touch display panel, the first control signal output by the driving circuit is at a high level, and the second control signal output by the driving circuit is at a low level.

16. The touch display panel as claimed in claim 1, further comprising: Printed circuit boards; At least one operational amplifier is disposed on the printed circuit board and electrically connected between the driving circuit and the second transistor group. The at least one operational amplifier receives the at least one driving signal from the driving circuit and transmits the amplified at least one driving signal to the second transistor group.

17. A touch display panel, comprising: substrate; Drive circuit; Multiple data lines, the first end of which is electrically connected to one of the multiple first output terminals of the driving circuit; Multiple pixels are arranged in an array within the effective area of ​​the substrate, and each of the multiple pixels is electrically connected to one of the multiple data lines; as well as A plurality of first transistors are disposed outside the effective region of the substrate, and a first terminal of each of the plurality of first transistors is electrically connected to one of the plurality of input terminals of the driving circuit. as well as A plurality of second transistors are disposed outside the effective region of the substrate, and a first terminal of each of the plurality of second transistors is electrically connected to one of a plurality of second output terminals of the driving circuit. The driving circuit outputs multiple driving signals to the first end of the multiple data lines to drive the multiple data lines. When at least one of the multiple data lines is disconnected, the first end of the at least one of the multiple data lines is fused with the second end of at least one of the multiple first transistors, and the second end of the at least one of the multiple data lines is fused with the second end of at least one of the multiple second transistors. During touch operation of the touch display panel, the driving circuit outputs at least a first control signal to turn off the multiple first transistors and the multiple second transistors.

18. The touch display panel of claim 17, wherein during the touch operation of the touch display panel, the first control signal output by the driving circuit is at a low level, and during the display operation of the touch display panel, the first control signal output by the driving circuit is at a high level.

19. The touch display panel of claim 17, further comprising: A plurality of third transistors, wherein the first terminal of each of the plurality of third transistors is electrically connected to the second output terminal of the driving circuit to receive a common voltage signal, and the second terminal of each of the plurality of third transistors is electrically connected to the second terminal of each of the plurality of first transistors. as well as A plurality of fourth transistors, wherein the first terminal of each of the plurality of fourth transistors is electrically connected to the second output terminal of the driving circuit to receive the common voltage signal, and the second terminal of each of the plurality of fourth transistors is electrically connected to the second terminal of each of the plurality of second transistors. During the touch operation on the touch display panel, the driving circuit outputs a second control signal to turn on the plurality of third transistors and the plurality of fourth transistors, and the common voltage signal is the touch co-drive signal.

20. The touch display panel of claim 19, wherein during the touch operation of the touch display panel, the first control signal output by the driving circuit is at a low level, the second control signal output is at a high level, and the output common voltage signal is the touch co-drive signal. During the display of the touch display panel, the first control signal output by the driving circuit is at a high level, and the second control signal output by the driving circuit is at a low level.

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