Array substrate, touch display panel and display device

Abstract

The invention discloses an array substrate, a touch display panel and a display device, and relates to the technical field of display. The array substrate comprises a display area and a non-display area. The display area comprises a plurality of touch control signal lines, a plurality of common electrode voltage lines and a plurality of touch control electrodes arranged in an array mode, each touch control electrode is at least connected with one touch control signal line, one touch control signal line is at least connected with one common electrode voltage line, the touch control signal lines extend in the first direction, the common electrode voltage lines extend in the second direction, and the touch control signal lines extend in the first direction. The first direction intersects with the second direction; the non-display area comprises a driving circuit, a plurality of first transmission lines and at least one second transmission line, the driving circuit is connected with the first transmission lines and the second transmission lines, the first transmission lines are correspondingly connected with the first ends of the touch signal lines, and the second transmission lines are connected with the common electrode voltage lines. The array substrate can effectively improve the display effect of the corresponding touch display panel.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to an array substrate, a touch display panel and a display device. Background Art

[0002] With the rapid development of display technology, touch display panels have become popular in people's daily lives. As the resolution of touch display panels increases, the display performance requirements of touch display panels are also getting higher and higher.

[0003] Currently, the display effect of touch display panels needs to be improved. Summary of the invention

[0004] The main purpose of the present application is to provide an array substrate, a touch display panel and a display device, aiming to improve the display effect of the corresponding touch display panel.

[0005] To achieve the above-mentioned object, the present application proposes an array substrate, the array substrate comprising a display area and a non-display area at least partially surrounding the display area;

[0006] The display area includes a plurality of touch signal lines, a plurality of common electrode voltage lines and a plurality of touch electrodes arranged in an array, each touch electrode is connected to at least one of the touch signal lines, and one of the touch signal lines is connected to at least one of the common electrode voltage lines, the touch signal lines extend along a first direction, the common electrode voltage lines extend along a second direction, and the first direction intersects with the second direction;

[0007] The non-display area includes a driving circuit, a plurality of first transmission lines and at least one second transmission line. The driving circuit is located on one side of the display area along the first direction. The driving circuit is respectively connected to each of the first transmission lines and each of the second transmission lines. Each of the first transmission lines is respectively connected to the first end of each of the touch signal lines, and the second transmission lines are respectively connected to each of the common electrode voltage lines.

[0008] In one embodiment, the second transmission line includes a winding portion and a connecting portion;

[0009] The first end of the winding portion is connected to the driving circuit, and the second end of the winding portion is connected to the connecting portion;

[0010] The connecting portion is located at one side of the display area along the second direction, and the connecting portion is connected to each of the common electrode voltage lines.

[0011] In one embodiment, the number of the second transmission lines is two, and the connection parts of the two second transmission lines are respectively located at two sides of the display area along the second direction.

[0012] In one embodiment, the non-display area further includes: at least one first switch circuit;

[0013] The first switch circuit is connected between the connection portion and each of the common electrode voltage lines, and the first switch circuit is used to control the connection and disconnection between the second transmission line and each of the common electrode voltage lines.

[0014] In one embodiment, the first switch circuit includes a plurality of first switch tubes;

[0015] The first pole of each first switch tube is respectively connected to the connecting part, the second pole of each first switch tube is correspondingly connected to each common electrode voltage line, and the gate of each first switch tube is used to receive the first gate driving signal output by the driving circuit.

[0016] In one embodiment, the non-display area is arranged around the display area, and the non-display area further includes a third transmission line;

[0017] The third transmission line is disposed around the display area, and the first end and the second end of the third transmission line are respectively connected to the driving circuit, and the third transmission line is respectively connected to the second end of each of the touch signal lines.

[0018] In one embodiment, the non-display area further includes a second switch circuit;

[0019] The second switch circuit is connected between the third transmission line and each of the touch signal lines, and the second switch circuit is used to control the connection and disconnection between the third transmission line and each of the touch signal lines.

[0020] In one embodiment, the second switch circuit includes a plurality of second switch tubes;

[0021] The first pole of each second switch tube is connected to the third transmission line respectively, the second pole of each second switch tube is connected to each touch signal line accordingly, and the gate of each second switch tube is used to receive the second gate drive signal output by the drive circuit.

[0022] In a second aspect, the present application further provides a touch display panel, comprising the array substrate as described in the first aspect.

[0023] In a third aspect, the present application further provides a display device, comprising the touch display panel as described in the second aspect.

[0024] The array substrate comprises a display area and a non-display area at least partially surrounding the display area; the display area comprises a plurality of touch signal lines, a plurality of common electrode voltage lines and a plurality of touch electrodes arranged in an array, the non-display area comprises a driving circuit, a plurality of first transmission lines and at least one second transmission line, the driving circuit is respectively connected to each first transmission line and each second transmission line, each first transmission line is respectively connected to the first end of each touch signal line, and the second transmission line is respectively connected to each common electrode voltage line, then in the display stage, the driving circuit can transmit the common electrode signal to each touch signal line via each first transmission line, and the touch electrode is transmitted to each touch signal line via the second transmission line. The common electrode signal is transmitted to each common electrode voltage line through the second transmission line. Since each touch electrode is connected to at least one touch signal line and one touch signal line is connected to at least one common electrode voltage line, the second transmission line, each common electrode voltage line, each touch signal line and each touch electrode form a parallel transmission network of the common electrode signal. The overall resistance of the parallel transmission network is low, thereby reducing the voltage drop of the common electrode voltage during the transmission process, effectively improving the uniformity of the common electrode signal in the display area, and reducing the delay of the common electrode signal, thereby improving the display problem and improving the display effect of the corresponding touch display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0026] Figure 1 is a structural schematic diagram of an array substrate in the related art;

[0027] Figure 2 This is a schematic diagram of the structure of an array substrate in an embodiment of the present application;

[0028] Figure 3 This is a schematic structural diagram of an array substrate in another embodiment of the present application;

[0029] Figure 4 This is a structural schematic diagram of an array substrate in yet another embodiment of the present application;

[0030] Figure 5 This is a schematic diagram of the structure of a touch display panel in an embodiment of the present application;

[0031] Figure 6 Schematic diagram of the structure of a display device in one embodiment of the present application.

[0032] Description of Figure Numbers:

[0033] 10-display area, 101-conductive signal line, 20-non-display area, 201-driving circuit, 1-display area, 11-touch signal line, 12-common electrode voltage line, 13-touch electrode, 2-non-display area, 21-binding area, 211-driving circuit, 22-first transmission line, 23-second transmission line, 231-winding part, 232-connecting part, 24-first switching circuit, 241-first switching tube, 25-first control signal line, 26-third transmission line, 27-second switching circuit, 271-second switching tube, 28-second control signal line, 100-touch display panel, 110-array substrate, 120-color film substrate, 130-liquid crystal layer, 1000-display device.

[0034] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0036] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0037] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0038] In addition, the drawings are not drawn to a 1:1 scale, and the relative sizes of the elements in the drawings are drawn only as examples and not necessarily according to the true scale.

[0039] At present, with the rapid development of display technology, the application of touch screens has become very popular. Among them, the In-cell (embedded) touch screen embeds the touch electrode of the touch screen inside the liquid crystal display to reduce the thickness of the module and reduce the production cost. The In-cell product has the advantages of integration, lightness, low cost, low power consumption, and high image quality. It is favored by consumers and panel manufacturers and has become a new development direction in the future.

[0040] In the related art, taking the Incell touch display panel as an example, Figure 1 As shown, the touch display panel includes a display area 10 and a non-display area 20. The common electrode (COM) of the display area 10 is divided into several touch electrodes 101, and each touch electrode 101 is connected to the drive circuit 201 via a conductive signal line 102. Since COM generally uses ITO (Indium Tin Oxide, tin-doped indium oxide) material, its resistivity is hundreds of times greater than that of metal Al (aluminum) or Cu (copper), so the signal delay will be very large. When COM is divided into several blocks, the distance from each touch electrode 101 to the signal input terminal is different, and the signal delay is also different. In the end, problems such as touch electrode lines and flicker may occur, affecting the display effect of the display product.

[0041] Based on the above technical problems, the inventors have found that by setting a common electrode voltage line that intersects with the touch signal line and transmitting the common electrode signal to the common electrode voltage line through the signal transmission line, the uniformity of the common electrode signal can be improved during the display stage, thereby improving the display effect. Based on this, the inventors have further studied the technical solution of the embodiment of the present application. Specifically, the array substrate provided in the embodiment of the present application includes a display area and a non-display area that at least partially surrounds the display area.

[0042] The display area includes a plurality of touch signal lines, a plurality of common electrode voltage lines, and a plurality of touch electrodes arranged in an array, each touch electrode is connected to at least one touch signal line, a touch signal line is connected to at least one common electrode voltage line, the touch signal line extends along a first direction, the common electrode voltage line extends along a second direction, and the first direction intersects with the second direction. The non-display area includes a driving circuit, a plurality of first transmission lines, and at least one second transmission line, the driving circuit is located on one side of the display area along the first direction, the driving circuit is respectively connected to each first transmission line and each second transmission line, each first transmission line is respectively connected to the first end of each touch signal line, and the second transmission line is respectively connected to each common electrode voltage line.

[0043] By connecting the driving circuit to each first transmission line and each second transmission line respectively, each first transmission line is respectively connected to the first end of each touch signal line, and the second transmission line is respectively connected to each common electrode voltage line. Then, in the display stage, the driving circuit can transmit the common electrode signal to each touch signal line via each first transmission line, and transmit the common electrode signal to each common electrode voltage line via the second transmission line. Since each touch electrode is connected to at least one touch signal line, and one touch signal line is connected to at least one common electrode voltage line, the second transmission line, each common electrode voltage line, each touch signal line and each touch electrode form a parallel transmission network of the common electrode signal. The overall resistance of the parallel transmission network is low, thereby reducing the voltage drop of the common electrode voltage during the transmission process, effectively improving the uniformity of the common electrode signal in the display area, and reducing the delay of the common electrode signal, thereby improving the display problem and improving the display effect of the corresponding touch display panel.

[0044] The above is the core idea of ​​this application. The technical solutions in the embodiments of this application will be described clearly and completely below in conjunction with the drawings in the embodiments of this application. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0045] The present application proposes an array substrate, such as Figure 2 As shown, the array substrate includes a display area 1 and a non-display area 2 at least partially surrounding the display area 1. The array substrate of the present application may be an In-cell type array substrate.

[0046] The display area 1 includes a plurality of touch signal lines 11, a plurality of common electrode voltage lines 12, and a plurality of touch electrodes 13 arranged in an array. Each touch electrode 13 is connected to at least one touch signal line 11, and a touch signal line 11 is connected to at least one common electrode voltage line 12. The touch signal line 11 extends along a first direction, and the common electrode voltage line 12 extends along a second direction. The first direction intersects the second direction. Figure 2 As shown, the first direction is the Y-axis direction, and the second direction is the X-axis direction.

[0047] It should be noted that the touch electrodes 13 of this embodiment are touch control units divided by common electrodes. The touch electrodes 13 serve as both common electrode signal terminals in the display phase of the touch display panel and touch signal terminals in the touch control phase. The touch signal lines 11 transmit touch signals to the touch electrodes 13 in the touch control phase and transmit common electrode signals to the touch electrodes 13 in the display phase. The common electrode voltage lines 12 are used to transmit common electrode signals in the display phase.

[0048] The non-display area 2 includes a driving circuit 211, a plurality of first transmission lines 22 and at least one second transmission line 23. The driving circuit 211 is located at one side of the display area 1 along the first direction, and the driving circuit 211 is respectively connected to each first transmission line 22 and each second transmission line 23, each first transmission line 22 is respectively connected to the first end of each touch signal line 11, and the second transmission line 23 is respectively connected to each common electrode voltage line 12. The driving circuit 211 may be a driving chip integrating touch and display functions, or may include a touch driving chip and a display driving chip. In this case, each first transmission line 22 is respectively connected to the touch driving chip and the display driving chip, and each second transmission line 23 is at least connected to the display driving chip.

[0049] by Figure 2 For example, the driving circuit 211 is located in the bonding area 21 below the display area 1, and the pins of the driving circuit 211 are respectively connected to each first transmission line 22 and each second transmission line 23. Each first transmission line 22 is located in the fan-out routing area between the display area 1 and the bonding area 21, and is used to connect the driving circuit 211 and the touch signal line 11, so that the driving circuit 211 transmits the touch signal to the touch electrode 13 via the first transmission line 22 and the touch signal line 11 in the touch stage, and transmits the common electrode signal to the touch electrode 13 via the first transmission line 22 and the touch signal line 11 in the display stage. The second transmission line 23 is respectively connected to the driving circuit 211 and each common electrode voltage line 12. Then, in the display stage, the driving circuit 211 can output the common electrode signal to each common electrode voltage line 12 via the second transmission line 23, and transmit the common electrode signal to the touch electrode 13 via each common electrode voltage line 12. It can be understood that, in this stage, the second transmission line 23, each common electrode voltage line 12, each touch signal line 11 and each touch electrode 13 form a parallel transmission network of the common electrode signal. The overall resistance of the parallel transmission network is relatively low, so the voltage drop of the common electrode voltage during the transmission process can be reduced, the uniformity of the common electrode signal in the display area 1 is effectively improved, and the delay of the common electrode signal is reduced, thereby improving the display problem and improving the display effect of the touch display panel.

[0050] The array substrate comprises a display area 1 and a non-display area 2 at least partially surrounding the display area 1; the display area 1 comprises a plurality of touch signal lines 11, a plurality of common electrode voltage lines 12 and a plurality of touch electrodes 13 arranged in an array; the non-display area 2 comprises a driving circuit 211, a plurality of first transmission lines 22 and at least one second transmission line 23; the driving circuit 211 is respectively connected to each first transmission line 22 and each second transmission line 23; each first transmission line 22 is respectively connected to a first end of each touch signal line 11; and the second transmission line 23 is respectively connected to each common electrode voltage line 12. In the display stage, the driving circuit 211 can transmit the common electrode signal to each touch signal line 11 via each first transmission line 22. The common electrode signal is transmitted to each common electrode voltage line 12 via the second transmission line 23. Since each touch electrode 13 is connected to at least one touch signal line 11, and one touch signal line 11 is connected to at least one common electrode voltage line 12, the second transmission line 23, each common electrode voltage line 12, each touch signal line 11 and each touch electrode 13 form a parallel transmission network of the common electrode signal. The overall resistance of the parallel transmission network is low, thereby reducing the voltage drop of the common electrode voltage during the transmission process, effectively improving the uniformity of the common electrode signal of the display area 1, and reducing the delay of the common electrode signal, thereby improving the display problem and improving the display effect of the corresponding touch display panel.

[0051] In one embodiment, Figure 2 As shown, the second transmission line 23 includes a winding portion 231 and a connecting portion 232 .

[0052] The first end of the winding portion 231 is connected to the driving circuit 211 , and the second end of the winding portion 231 is connected to the connecting portion 232 . The connecting portion 232 is located at one side of the display area 1 along the second direction and extends along the first direction. The connecting portion 232 is connected to each common electrode voltage line 12 .

[0053] The connection portion 232 and the common electrode lines may be located in the same conductive layer so that the connection portion 232 is connected to each common electrode line.

[0054] It can be understood that, since each common electrode voltage line 12 extends along the second direction, and since the second transmission line 23 needs to be connected to each common electrode voltage line 12, a portion of the second transmission line 23, namely the connecting portion 232, needs to be located at one side of the display area 1 along the second direction, and extends along the first direction, so that the connecting portion 232 is connected to each common electrode voltage line 12. In addition, since the connecting portion 232 is located at one side of the display area 1 along the second direction, and the driving circuit 211 is located at one side of the display area 1 along the first direction, the connecting portion 232 needs to be connected to the driving circuit 211 through a winding, and the second transmission line 23 needs to include a winding portion 231, so that the connecting portion 232 is connected to the driving circuit 211 through the winding portion 231.

[0055] by Figure 2 Taking the structure shown as an example, Figure 2 In the embodiment, the connection portion 232 is located on the left side of the display area 1, the winding portion 231 is located in the special-shaped area at the lower left corner of the array substrate, the connection portion 232 is connected to the driving circuit 211 through the winding portion 231, and the connection portion 232 is respectively connected to each common electrode voltage line 12. Then, in the display stage, the driving circuit 211 can transmit the common electrode signal to the winding portion 231, and transmit it to each common electrode voltage line 12 through the connection portion 232, so that the common electrode signal can be transmitted on the common electrode voltage line 12 extending along the second direction. Since one touch signal line 11 is connected to at least one common electrode voltage line 12, the touch signal line 11, the common electrode voltage line 12 and the touch electrode 13 can form a parallel transmission network of the common electrode signal in the display area 1, thereby effectively improving the uniformity of the common electrode signal in the display area 1 and improving the display effect of the corresponding touch display panel.

[0056] In this embodiment, the second transmission line 23 includes a winding portion 231 and a connecting portion 232, and the first end of the winding portion 231 is connected to the driving circuit 211, and the second end of the winding portion 231 is connected to the connecting portion 232, so that the connecting portion 232 can be connected to the driving circuit 211 through winding, that is, the second transmission line 23 is connected to the driving circuit 211 through winding in the special-shaped area of ​​the array substrate, so that the driving circuit 211 can transmit signals to the connecting portion 232 through the winding portion 231, and transmit the signals to each common electrode voltage line 12 through the connecting portion 232, so that the touch signal line 11, the common electrode voltage line 12 and the touch electrode 13 can form a parallel transmission network of the common electrode signal in the display area 1, thereby effectively improving the uniformity of the common electrode signal in the display area 1 and improving the display effect of the corresponding touch display panel.

[0057] In one embodiment, Figure 3 As shown, the number of the second transmission lines 23 is two, and the connection portions 232 of the two second transmission lines 23 are respectively located at two sides of the display area 1 along the second direction.

[0058] It can be understood that the second transmission lines 23 are arranged on both sides of the display area 1 along the second direction, and the second transmission lines 23 are respectively connected to each common electrode voltage line 12. Then, in the display stage, the common electrode signal output by the driving circuit 211 will be input to each common electrode voltage line 12 from both sides of the display area 1 through the two second transmission lines 23, thereby improving the uniformity of the common electrode signal in the second direction. In addition, the two second transmission lines 23, each common electrode voltage line 12, each touch signal line 11 and the touch electrode 13 will form a larger parallel transmission network, which can effectively reduce the voltage drop of the common electrode signal transmitted in the display area 1, thereby further improving the uniformity of the common electrode signal in the display area 1, and reducing the delay of the common electrode signal, improving the display problem, and improving the display effect of the corresponding touch display panel.

[0059] by Figure 3 Taking the structure shown as an example, Figure 3 In the non-display area 2, the two second transmission lines 23 are respectively connected to the driving circuit 211, and the connecting parts 232 of the two second transmission lines 23 are respectively located on the left and right sides of the display area 1, and the connecting parts 232 of the two second transmission lines 23 are respectively connected to the common electrode voltage lines 12 of the display area 1. Then, in the display stage, for a common electrode voltage line 12, the common electrode signal output by the driving circuit 211 is transmitted to both ends of the common electrode voltage line 12 from the left and right sides simultaneously through the two second transmission lines 23, and for other common electrode voltage lines 12, the same is true, and the common electrode signal is input from both ends of the common electrode voltage line 12 at the same time, thereby improving the uniformity of the common electrode signal in the first direction. In addition, it can be compared Figure 3 and Figure 2 The structure shown in the figure shows that Figure 2 A parallel transmission network formed by a second transmission line 23, each common electrode voltage line 12, each touch signal line 11 and the touch electrode 13, Figure 3 In the embodiment, the parallel transmission network formed by the two second transmission lines 23, each common electrode voltage line 12, each touch signal line 11 and the touch electrode 13 is larger, thereby further reducing the voltage drop of the common electrode signal transmitted in the display area 1, so as to further improve the uniformity of the common electrode signal in the display area 1, reduce the delay of the common electrode signal, improve the display problem, and improve the display effect of the corresponding touch display panel.

[0060] In one embodiment, Figure 2 and Figure 3 As shown, the non-display area 2 further includes: at least one first switch circuit 24 .

[0061] The first switch circuit 24 is connected between the connection portion 232 and each common electrode voltage line 12 , and is used to control the connection and disconnection between the second transmission line 23 and each common electrode voltage line 12 .

[0062] The number of the second transmission lines 23 may be one or two or more, and the number of the first switch circuits 24 may be the same as the number of the second transmission lines 23 .

[0063] It is understandable that Figure 2 As shown, in the case where the number of the second transmission line 23 is one, the connection portion 232 of the second transmission line 23 is located at one side of the display area 1, the number of the first switch circuit 24 can be one, the first switch circuit 24 is located between the connection portion 232 of the second transmission line 23 and each common electrode voltage line 12, the control end of the first switch circuit 24 can be connected to the drive circuit 211 via the first control signal line 25, the first switch circuit 24 can receive the control signal output by the drive circuit 211 via the first control signal line 25, and the first switch circuit 24 controls the connection and disconnection between the second transmission line 23 and each common electrode voltage line 12 in response to the control signal. Figure 2 Taking the structure shown as an example, the connection portion 232 of the second transmission line 23 is located on the left side of the display area 1, the first switch circuit 24 is located between the second transmission line 23 and each common electrode line, the control end of the first switch circuit 24 is connected to the first control signal line 25, and the first control signal line 25 is connected to the drive circuit 211. It should be noted that Figure 2 The structure shown is only an example of the present application. The connection portion 232 of the second transmission line 23 is not limited to be located on the left side of the display area 1 . The connection portion 232 of the second transmission line 23 may also be located on the right side of the display area 1 .

[0064] like Figure 3 As shown, in the case where the number of the second transmission lines 23 is two, the connection parts 232 of the two second transmission lines 23 are respectively located on both sides of the display area 1, the number of the first switch circuits 24 can be two, and the two first switch circuits 24 are respectively located between the connection parts 232 of the corresponding second transmission lines 23 and each common electrode voltage line 12, and the control ends of the two first switch circuits 24 can be respectively connected to the driving circuit 211 via the first control signal line 25 to receive the control signal output by the driving circuit 211, and the two first switch circuits 24 respectively respond to the control signal to control the connection and disconnection between the second transmission line 23 and each common electrode voltage line 12.

[0065] In the touch stage, the driving circuit 211 outputs a touch signal to each first transmission line 22, each first transmission line 22 transmits a touch signal to each touch signal line 11, and each touch signal line 11 outputs a touch signal to the touch electrode 13 to achieve touch sensing. At the same time, the driving circuit 211 can output a first control signal to the first control signal line 25, and the first switch circuit 24 is in a disconnected state in response to the first control signal to control the second transmission line 23 to disconnect from each common electrode voltage line 12, thereby avoiding interference with the common electrode signal.

[0066] In the display stage, the driving circuit 211 can output the second control signal to the first control signal line 25, and the first switch circuit 24 is in the on state in response to the second control signal to control the second transmission line 23 to be connected with each common electrode voltage line 12. At the same time, the driving circuit 211 outputs the common electrode signal to each first transmission line 22 and each second transmission line 23 respectively, each first transmission line 22 transmits the common electrode signal to each touch signal line 11, and each second transmission line 23 transmits the common electrode signal to each common electrode voltage line 12, so that each common electrode voltage line 12, each touch signal line 11 and the touch electrode 13 form a parallel transmission network, reduce the voltage drop of the common electrode signal transmitted in the display area 1, so as to improve the uniformity of the common electrode signal in the display area 1, and improve the display effect of the touch display panel.

[0067] In one embodiment, Figure 2 and Figure 3 As shown, the first switch circuit 24 includes a plurality of first switch tubes 241. Among them, the first switch tube 241 can be a MOS (Metal-Oxide-Semiconductor Field-Effect Transistor) transistor. The MOS transistor includes a source, a drain, and a gate. Generally, the source and drain of a MOS transistor are not distinguished. Therefore, the present application uses the first pole and the second pole to represent the two poles of the MOS transistor. The gate of the MOS transistor is used to receive a gate drive signal, and the MOS transistor is turned on or off in response to the gate drive signal. MOS transistors are divided into two types: N-channel MOS (NMOS) and P-channel MOS (PMOS). NMOS transistors are turned on in response to low-level signals, and PMOS transistors are turned on in response to high-level signals. The first switch tube 241 of this embodiment can be an NMOS transistor or a PMOS transistor, and is not specifically limited.

[0068] The first pole of each first switch tube 241 is connected to the connecting portion 232 , the second pole of each first switch tube 241 is connected to each common electrode voltage line 12 , and the gate of each first switch tube 241 is used to receive the first gate driving signal output by the driving circuit 211 .

[0069] In the case where the first switch circuit 24 is provided on one side of the display area 1, the drive circuit 211 can be connected to the gate of each first switch tube 241 on one side via a first control signal line 25. In the case where the first switch circuits 24 are provided on both sides of the display area 1, the drive circuit 211 can be connected to the gate of each first switch tube 241 on the first side via a first first control signal line 25, and connected to the gate of each first switch tube 241 on the second side via a second first control signal line 25.

[0070] It can be understood that, since the first poles of the first switch tubes 241 are respectively connected to the connection parts 232, and the second poles of the first switch tubes 241 are correspondingly connected to the common electrode voltage lines 12, when the first switch tubes 241 are turned on, the connection parts 232 of the second transmission lines 23 are connected to the common electrode voltage lines 12. When the first switch tubes 241 are turned off, the connection parts 232 of the second transmission lines 23 are disconnected from the common electrode voltage lines 12. On this basis, the driving circuit 211 can transmit the first gate driving signal to the gate of each first switch tube 241 via the first control signal line 25 to simultaneously control the on and off of each first switch tube 241. The driving circuit 211 can output the first gate driving signal to control the connection state between the connecting portion 232 of the second transmission line 23 and each common electrode voltage line 12, so that each first switch tube 241 can be controlled to be disconnected during the touch stage to avoid the common electrode signal from being input into the common electrode voltage line 12 via the second transmission line 23. In the display stage, each first switch tube 241 can be controlled to be turned on to allow the common electrode signal to be input into the common electrode voltage line 12 via the second transmission line 23, thereby improving the uniformity of the common electrode signal in the display area 1.

[0071] It should be noted that the first gate signal output by the driving circuit 211 is related to the type of the first switch tube 241. When the first switch tube 241 is an NMOS transistor, the first gate signal output by the driving circuit 211 in the touch stage is a high-level signal, and the first gate signal output in the display stage is a low-level signal. When the first switch tube 241 is a PMOS transistor, the first gate signal output by the driving circuit 211 in the touch stage is a low-level signal, and the first gate signal output in the display stage is a high-level signal.

[0072] In one embodiment, Figure 4 As shown, the non-display area 2 is arranged around the display area 1, so that the non-display area 2 is distributed around the display area 1, and the signal transmission line can be set in the non-display area 2 around the display area 1.

[0073] The non-display area 2 further includes a third transmission line 26 , which is arranged around the display area 1 , and the first and second ends of the third transmission line 26 are respectively connected to the drive circuit 211 , and the third transmission line 26 is respectively connected to the second end of each touch signal line 11 .

[0074] It can be understood that the first end and the second end of the third transmission line 26 can be connected to the driving circuit 211 respectively, so that the voltage drop on the third transmission line 26 can be low, which is conducive to ensuring the uniformity of the common electrode signal. On this basis, in the display stage, the driving circuit 211 can output the common electrode signal to the second end of each touch signal line 11 via the third transmission line 26, and the driving circuit 211 can also output the common electrode signal to the first end of each touch signal line 11 via the first transmission line 22, so that each touch signal line 11 can receive the common electrode signal, thereby improving the uniformity of the common electrode signal in the second direction. In addition, the second transmission line 23, the third transmission line 26, each common electrode voltage line 12, each touch signal line 11 and the touch electrode 13 will form a parallel transmission network, which is conducive to improving the uniformity of the common electrode signal of the display area 1, reducing the delay of the common electrode signal, improving the display problem, and improving the display effect of the touch display panel.

[0075] It should be noted that, in application, the third transmission line 26 can also be connected to the driving circuit 211 at only one end, and the third transmission line 26 is respectively connected to the second end of each touch signal line 11. This solution can also be used to input the common electrode signal from the upper side of the display area 1.

[0076] In one example, if Figure 4 As shown, the non-display area 2 may include multiple first transmission lines 22, two second transmission lines 23 and one third transmission line 26. In the display stage, the common electrode signal can be input from the top, bottom, left and right sides of the display area 1, thereby improving the uniformity of the common electrode signal in the display area 1 and improving the display effect of the touch display panel.

[0077] In one embodiment, Figure 4 As shown, the non-display area 2 further includes a second switch circuit 27 .

[0078] The second switch circuit 27 is connected between the third transmission line 26 and each touch signal line 11 . The second switch circuit 27 is used to control the connection between the third transmission line 26 and each touch signal line 11 .

[0079] It can be understood that the second switch circuit 27 is located between the connection part 232 of the second transmission line 23 and each common electrode voltage line 12, the control end of the second switch circuit 27 can be connected to the driving circuit 211 via the second control signal line 28, the second switch circuit 27 can receive the control signal output by the driving circuit 211 via the second control signal line 28, and the second switch circuit 27 controls the on and off between the third transmission line 26 and each touch signal line 11 in response to the control signal.

[0080] In one example, in the touch stage, the driving circuit 211 outputs a touch signal to each first transmission line 22, each first transmission line 22 transmits a touch signal to each touch signal line 11, and each touch signal line 11 outputs a touch signal to the touch electrode 13 to achieve touch sensing. At the same time, the driving circuit 211 can output a first control signal to the first control signal line 25, and output a third control signal to the second control signal line 28, the first switch circuit 24 disconnects in response to the first control signal to control the second transmission line 23 to disconnect from each common electrode voltage line 12, and the second switch circuit 27 disconnects in response to the third control signal to control the third transmission line 26 to disconnect from each touch signal line 11, thereby avoiding interference of each transmission line with the touch signal. In the display stage, the driving circuit 211 can output a second control signal to the first control signal line 25 and a fourth control signal to the second control signal line 28. The first switch circuit 24 is in an on state in response to the second control signal to control the second transmission line 23 to be connected to each common electrode voltage line 12. The second switch circuit 27 is in an on state in response to the fourth control signal to control the third transmission line 26 to be connected to each touch signal line 11. At the same time, the driving circuit 211 outputs the common electrode signal to each first transmission line 22, each second transmission line 23 and the third transmission line 26 respectively. Each first transmission line 22 transmits the common electrode signal to the first end of each touch signal line 11, the third transmission line 26 transmits the common electrode signal to the second end of each touch signal line 11, and each second transmission line 23 transmits the common electrode signal to each common electrode voltage line 12. The common electrode signal is input from different sides of the display area 1 to improve the uniformity of the common electrode signal. In addition, each transmission line, each common electrode voltage line 12, each touch signal line 11 and the touch electrode 13 form a parallel transmission network to reduce the voltage drop of the common electrode signal transmitted in the display area 1, further improve the uniformity of the common electrode signal in the display area 1, thereby improving the display effect of the touch display panel.

[0081] In one embodiment, Figure 4 As shown, the second switch circuit 27 includes a plurality of second switch tubes 271. Similarly, the second switch tubes 271 may also be MOS transistors. The second switch tubes 271 of this embodiment may be NMOS transistors or PMOS transistors, which are not specifically limited.

[0082] The first electrode of each second switch tube 271 is connected to the third transmission line 26 , the second electrode of each second switch tube 271 is connected to each touch signal line 11 , and the gate of each second switch tube 271 is used to receive the second gate driving signal output by the driving circuit 211 .

[0083] It can be understood that, since the first electrodes of the second switch tubes 271 are respectively connected to the third transmission lines 26, and the second electrodes of the first switch tubes 241 are correspondingly connected to the touch signal lines 11, when the second switch tubes 271 are turned on, the third transmission lines 26 are connected to the touch signal lines 11. When the second switch tubes 271 are turned off, the third transmission lines 26 are disconnected from the touch signal lines 11. On this basis, the driving circuit 211 can transmit the second gate driving signal to the gate of each second switch tube 271 via the second control signal line 28 to simultaneously control the on and off of each second switch tube 271. The driving circuit 211 can then output the second gate driving signal to control the connection state between the third transmission line 26 and each touch signal line 11, thereby controlling each second switch tube 271 to be disconnected during the touch stage to avoid interference of the third transmission line 26 on the touch signal. During the display stage, each second switch tube 271 can be controlled to be turned on, so that the common electrode signal is input into the common electrode voltage line 12 via the third transmission line 26, thereby improving the uniformity of the common electrode signal in the display area 1.

[0084] It should be noted that, in applications, the first switch tube 241 can be switched synchronously with the second switch tube 271 .

[0085] In one embodiment, Figure 5 As shown, the present application further provides a touch display panel 100, comprising an array substrate 110 as described in any of the above solutions.

[0086] The display panel may include an array substrate 110 , a color filter substrate 120 , and a liquid crystal layer 130 , wherein the liquid crystal layer 130 is located between the array substrate 110 and the color filter substrate 120 .

[0087] In this embodiment, the touch display panel 100 includes the array substrate 110 as described in any of the above schemes. Therefore, the touch display panel 100 also has the beneficial effects of the array substrate 110 in the above embodiments. The similarities can be understood by referring to the above explanation of the array substrate 110, which will not be repeated below.

[0088] In one embodiment, Figure 6As shown, the present application further provides a display device 1000, comprising the touch display panel 100 as described above. The display device 1000 comprises the touch display panel 100 as described in any of the above schemes, and therefore, the display device 1000 also has the beneficial effects of the array substrate 110 in the above embodiments, and the similarities can be understood by referring to the above explanation of the array substrate 110, which will not be repeated below.

[0089] The display device provided in the embodiment of the present application can be Figure 6 The mobile phone shown can also be any electronic product with a display function, including but not limited to the following categories: televisions, laptops, desktop displays, tablet computers, digital cameras, smart bracelets, smart glasses, car displays, industrial control equipment, medical display screens, touch interactive terminals, etc. The embodiments of the present application do not specifically limit this.

[0090] The above description is only an exemplary embodiment of the present application and does not limit the patent scope of the present application. All equivalent structural changes made by using the contents of the present application specification and drawings under the technical concept of the present application, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present application.

Claims

1. An array substrate, characterized in that: The array substrate comprises a display area and a non-display area at least partially surrounding the display area; The display area includes a plurality of touch signal lines, a plurality of common electrode voltage lines and a plurality of touch electrodes arranged in an array, each touch electrode is connected to at least one of the touch signal lines, and one of the touch signal lines is connected to at least one of the common electrode voltage lines, the touch signal lines extend along a first direction, the common electrode voltage lines extend along a second direction, and the first direction intersects with the second direction; The non-display area includes a driving circuit, a plurality of first transmission lines and at least one second transmission line. The driving circuit is located on one side of the display area along the first direction. The driving circuit is respectively connected to each of the first transmission lines and each of the second transmission lines. Each of the first transmission lines is respectively connected to the first end of each of the touch signal lines, and the second transmission lines are respectively connected to each of the common electrode voltage lines.

2. The array substrate according to claim 1, characterized in that: The second transmission line includes a winding portion and a connecting portion; The first end of the winding portion is connected to the driving circuit, and the second end of the winding portion is connected to the connecting portion; The connecting portion is located at one side of the display area along the second direction and extends along the first direction. The connecting portion is connected to each of the common electrode voltage lines.

3. The array substrate according to claim 2, characterized in that: The number of the second transmission lines is two, and the connecting parts of the two second transmission lines are respectively located at two sides of the display area along the second direction.

4. The array substrate according to claim 2, characterized in that: The non-display area further includes: at least one first switch circuit; The first switch circuit is connected between the connection portion and each of the common electrode voltage lines, and the first switch circuit is used to control the connection and disconnection between the second transmission line and each of the common electrode voltage lines.

5. The array substrate according to claim 4, characterized in that: The first switch circuit includes a plurality of first switch tubes; The first pole of each first switch tube is respectively connected to the connecting part, the second pole of each first switch tube is correspondingly connected to each common electrode voltage line, and the gate of each first switch tube is used to receive the first gate driving signal output by the driving circuit.

6. The array substrate according to claim 1, characterized in that: The non-display area is arranged around the display area, and the non-display area further includes a third transmission line; The third transmission line is disposed around the display area, and the first end and the second end of the third transmission line are respectively connected to the driving circuit, and the third transmission line is respectively connected to the second end of each of the touch signal lines.

7. The array substrate according to claim 6, characterized in that: The non-display area further includes a second switch circuit; The second switch circuit is connected between the third transmission line and each of the touch signal lines, and the second switch circuit is used to control the connection and disconnection between the third transmission line and each of the touch signal lines.

8. The array substrate according to claim 7, characterized in that: The second switch circuit includes a plurality of second switch tubes; The first pole of each second switch tube is connected to the third transmission line respectively, the second pole of each second switch tube is connected to each touch signal line accordingly, and the gate of each second switch tube is used to receive the second gate drive signal output by the drive circuit.

9. A touch display panel, characterized in that: It comprises the array substrate as claimed in any one of claims 1 to 8.

10. A display device, characterized in that: It comprises the touch display panel as claimed in claim 9.

Images