Touch panels, display devices and touch scanning methods

Abstract

This application relates to a touch panel, display device, touch scanning method, apparatus, touch chip, computer-readable storage medium, and computer program product. It includes: M×N touch electrodes arranged in an array; M rows of touch electrodes divided into multiple groups; each touch electrode connected to a corresponding touch signal line and a corresponding first switch control circuit; the first switch control circuits connected to touch electrodes belonging to the same group in each column are connected to the same scan drive signal line, and each scan drive signal line is connected to the touch chip. Because the M rows of touch electrodes are divided into multiple groups, the first switch control circuits corresponding to multiple rows of touch electrodes belonging to multiple groups can be controlled to be simultaneously turned on, thus enabling simultaneous scanning of multiple rows of touch electrodes, improving the scanning speed of the touch electrodes on the touch panel, and reducing the scanning time.

Description

Technical Field

[0001] This application relates to the field of touch display technology, and in particular to a touch panel, display device, touch scanning method, apparatus, touch chip, computer-readable storage medium, and computer program product. Background Technology

[0002] Embedded touch panels have both display and touch functions. Touch panels generally include multiple rows of touch electrodes. In traditional technology, the touch electrodes are scanned line by line. This method has a long scanning time and low touch performance. Summary of the Invention

[0003] Therefore, it is necessary to provide a touch panel, display device, touch scanning method, and touch chip that can improve touch performance in response to the above-mentioned technical problems.

[0004] In a first aspect, this application provides a touch panel, comprising: M×N touch electrodes arranged in an array, M×N touch signal lines corresponding to each of the M×N touch electrodes, M×N first switch control circuits corresponding to each of the M×N touch electrodes, and a touch chip; wherein...

[0005] The M rows of touch electrodes are divided into multiple groups; each touch electrode is connected to a corresponding touch signal line and a corresponding first switch control circuit; the first switch control circuits of touch electrodes belonging to the same group in each column are connected to the same scan drive signal line, and each scan drive signal line is connected to the touch chip.

[0006] Secondly, this application also provides a display device, including the touch panel provided in the first aspect.

[0007] Thirdly, this application provides a touch panel, comprising: a plurality of spaced-apart touch electrodes, a plurality of touch signal lines corresponding to the plurality of touch electrodes, a plurality of first switch control circuits corresponding to the plurality of touch electrodes, and a touch chip; wherein...

[0008] Multiple touch electrodes are divided into multiple groups according to region. Each touch electrode is connected to a corresponding first switch control circuit through a corresponding touch signal line. The first switch control circuits of touch electrodes belonging to the same group are connected to the same scan drive signal line, and each scan drive signal line is connected to the touch chip.

[0009] Fourthly, this application also provides a touch scanning method, including:

[0010] After entering the touch stage, for each column of touch electrodes, the first switch control circuit corresponding to the touch electrode in the i-th row of each group is turned on.

[0011] After the preset time is reached, the first switch control circuit corresponding to the touch electrode in the i-th row of each group is disconnected, and the first switch control circuit corresponding to the touch electrode in the (i+1)-th row of each group is turned on, (n-1)≥i≥1, where n is the number of rows of touch electrodes in each group.

[0012] Fifthly, this application also provides a touch scanning device, comprising:

[0013] The judgment module is used to determine whether the touch phase has begun;

[0014] The control module is used to, after entering the touch stage, control the first switch control circuit corresponding to the touch electrode in the i-th row of each group to be turned on for each column of touch electrodes; after reaching the preset time, control the first switch control circuit corresponding to the touch electrode in the i-th row of each group to be turned off, and control the first switch control circuit corresponding to the touch electrode in the (i+1)-th row of each group to be turned on, (n-1)≥i≥1, where n is the number of rows of touch electrodes in each group.

[0015] Sixthly, this application also provides a touch chip, including a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to perform the following steps:

[0016] After entering the touch stage, for each column of touch electrodes, the first switch control circuit corresponding to the touch electrode in the i-th row of each group is turned on.

[0017] After the preset time is reached, the first switch control circuit corresponding to the touch electrode in the i-th row of each group is disconnected, and the first switch control circuit corresponding to the touch electrode in the (i+1)-th row of each group is turned on, (n-1)≥i≥1, where n is the number of rows of touch electrodes in each group.

[0018] Seventhly, this application also provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, performs the following steps:

[0019] After entering the touch stage, for each column of touch electrodes, the first switch control circuit corresponding to the touch electrode in the i-th row of each group is turned on.

[0020] After the preset time is reached, the first switch control circuit corresponding to the touch electrode in the i-th row of each group is disconnected, and the first switch control circuit corresponding to the touch electrode in the (i+1)-th row of each group is turned on, (n-1)≥i≥1, where n is the number of rows of touch electrodes in each group.

[0021] Eighthly, this application also provides a computer program product, including a computer program that, when executed by a processor, performs the following steps:

[0022] After entering the touch stage, for each column of touch electrodes, the first switch control circuit corresponding to the touch electrode in the i-th row of each group is turned on.

[0023] After the preset time is reached, the first switch control circuit corresponding to the touch electrode in the i-th row of each group is disconnected, and the first switch control circuit corresponding to the touch electrode in the (i+1)-th row of each group is turned on, (n-1)≥i≥1, where n is the number of rows of touch electrodes in each group.

[0024] The aforementioned touch panel, display device, touch scanning method, apparatus, touch chip, computer-readable storage medium, and computer program product include: an array of M×N touch electrodes, M×N touch signal lines corresponding to each of the M×N touch electrodes, M×N first switch control circuits corresponding to each of the M×N touch electrodes, and a touch chip; wherein the M rows of touch electrodes are divided into multiple groups; each touch electrode is connected to a corresponding touch signal line and a corresponding first switch control circuit; the first switch control circuits connected to the touch electrodes belonging to the same group in each column are connected to the same scan drive signal line, and each scan drive signal line is connected to the touch chip. Since the M rows of touch electrodes are divided into multiple groups, the first switch control circuits corresponding to multiple rows of touch electrodes belonging to multiple groups can be controlled to be turned on simultaneously, thus enabling simultaneous scanning of multiple rows of touch electrodes, improving the scanning speed of the touch electrodes on the touch panel, reducing scanning time, and improving touch performance. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this application or related technologies, the drawings used in the description of the embodiments of this application or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of a touch panel in one embodiment;

[0027] Figure 2 This is a schematic diagram of the touch panel in another embodiment;

[0028] Figure 3 This is a schematic diagram of the touch panel in yet another embodiment;

[0029] Figure 4This is a schematic diagram of the structure of the first switch control circuit in one embodiment;

[0030] Figure 5 This is a schematic diagram of the structure of the first switch control circuit in another embodiment;

[0031] Figure 6 This is a schematic diagram of the structure of the second switch control circuit in one embodiment;

[0032] Figure 7 This is a schematic diagram of the second switch control circuit in another embodiment;

[0033] Figure 8 This is a schematic diagram of the touch panel in yet another embodiment;

[0034] Figure 9 This is a cross-sectional view of the touch panel in one embodiment;

[0035] Figure 10 This is a schematic diagram of the touch panel in yet another embodiment;

[0036] Figure 11 This is a flowchart illustrating a touch scanning method in one embodiment;

[0037] Figure 12 This is a schematic diagram of the touch panel in yet another embodiment;

[0038] Figure 13 This is a timing control diagram in one embodiment;

[0039] Figure 14 This is a structural block diagram of a touch scanning device in one embodiment. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0041] Traditionally, touch electrodes on a touch panel are scanned line by line. This method has a long scanning time, compresses the discharge time of the touch electrodes, and results in poor touch performance. Therefore, this application provides a touch panel comprising: M×N touch electrodes 10 arranged in an array, M×N touch signal lines corresponding to each of the M×N touch electrodes 10, M×N first switch control circuits 11 corresponding to each of the M×N touch electrodes 10, and a touch chip 12. The M rows of touch electrodes 10 are divided into multiple groups. Each touch electrode 10 is connected to a corresponding touch signal line and a corresponding first switch control circuit 11. The first switch control circuits 11 connected to the same group of touch electrodes in each column are connected to the same scan drive signal line, and each scan drive signal line is connected to the touch chip 12. In this way, multiple rows of touch electrodes 10 in multiple groups can be scanned in parallel, reducing the scanning time of the touch electrodes 10 on the touch panel and improving the touch performance of the touch panel.

[0042] The touch panel provided in this application embodiment can be applied to any device that provides touch interaction functionality. For example, the touch panel provided in this application embodiment can be applied to a terminal, which can be, but is not limited to, various personal computers, laptops, smartphones, tablets, IoT devices, and portable wearable devices. IoT devices can be smart speakers, smart TVs, smart air conditioners, smart in-vehicle devices, projection devices, etc. Portable wearable devices can be smartwatches, smart bracelets, head-mounted devices, etc. Head-mounted devices can be virtual reality (VR) devices, augmented reality (AR) devices, smart glasses, etc.

[0043] In an exemplary embodiment, a touch panel is provided, comprising: M×N touch electrodes 10 arranged in an array, M×N touch signal lines corresponding to the M×N touch electrodes 10, M×N first switch control circuits 11 corresponding to the M×N touch electrodes 10, and a touch chip 12; wherein the M rows of touch electrodes 10 are divided into multiple groups according to the rows; each touch electrode 10 is connected to a corresponding touch signal line and a corresponding first switch control circuit 11; the first switch control circuits 11 connected to the touch electrodes 10 belonging to the same group in each column of touch electrodes 10 are connected to the same scan drive signal line, and each scan drive signal line is connected to the touch chip 12.

[0044] Optionally, the touch panel provided in this application embodiment can be a self-capacitive touch panel or a mutual-capacitive touch panel. For example... Figure 1As shown, the touch panel provided in this application embodiment includes an array of M×N touch electrodes 10. The specific values ​​of M and N can be set according to the application scenario of the touch panel. This application embodiment does not limit the values ​​of M and N.

[0045] Optionally, the touch panel provided in this application embodiment can be manufactured using Visionox intelligent pixelation (ViP) technology.

[0046] The touch panel provided in this application embodiment includes M×N touch signal lines corresponding to the M×N touch electrodes 10 respectively. The touch signal lines are used to transmit signals flowing into the corresponding touch electrode 10 and signals flowing out of the corresponding touch electrode 10.

[0047] Among them, see Figure 2 As shown, the touch panel provided in this application embodiment also includes M×N first switch control circuits 11 corresponding to M×N touch electrodes 10 respectively, and each touch electrode 10 is connected to the corresponding first switch control circuit 11 through a corresponding touch signal line. Figure 2 The following is an example using M=12 and N=18. Figure 2 Only column 1 is shown in the image; the other columns are set the same as column 1.

[0048] The M rows of touch electrodes 10 are divided into multiple groups. For example, the M rows of touch electrodes 10 can be divided into W groups. The number of rows of touch electrodes 10 in each of the W groups can be the same, or the number of rows of touch electrodes 10 in some of the W groups can be the same, or the number of rows of touch electrodes 10 in each of the W groups can be different. This application does not limit this.

[0049] For example, see [link to previous article] Figure 2 As shown, the touch panel includes 12×18 touch electrodes 10. The touch electrodes 10 in rows 1-6 can be grouped into one group, which is connected to a scan drive signal line. The touch electrodes 10 in rows 7-12 can be grouped into another group, which is connected to a different scan drive signal line, resulting in two groups in total. This is just one example; other grouping methods are possible. This example does not constitute a limitation on the embodiments of this application.

[0050] Each touch electrode 10 is connected to a corresponding touch signal line and a corresponding first switch control circuit 11. For each column of touch electrodes 10, the first switch control circuits 11 connected to the same group of touch electrodes 10 in that column are connected to the same scan drive signal line. All scan drive signal lines are connected to the touch chip 12, and the touch chip 12 outputs a scan drive signal through each scan drive signal line.

[0051] Based on the above example, the touch panel includes 12×18 touch electrodes 10. The touch electrodes 10 in rows 1-6 can be divided into one group, which is called group A for ease of explanation; and the touch electrodes 10 in rows 7-12 can be divided into another group, which is called group B for ease of explanation, resulting in two groups. Each touch electrode 10 is connected to a corresponding touch signal line and a corresponding first switch control circuit 11. For each of the 18 columns of touch electrodes 10, the first switch control circuits 11 connected to all touch electrodes 10 belonging to group A in that column are connected to the same scan drive signal line. For ease of explanation, this scan drive signal line is referred to as drive signal line A. The first switch control circuits 11 connected to all touch electrodes 10 belonging to group B in that column are connected to the same scan drive signal line. For ease of explanation, this scan drive signal line is referred to as drive signal line B. Both drive signal line A and drive signal line B are connected to the touch chip 12. The touch chip 12 outputs scan drive signals through drive signal line B and drive signal line A.

[0052] The M×N touch electrodes 10, M×N touch signal lines, and M×N first switch control circuits 11 have a one-to-one correspondence. Each touch electrode 10 is connected to the corresponding first switch control circuit 11 through the corresponding touch signal line. The first switch control circuit 11 is used to control the connection or disconnection between the corresponding touch signal line and the corresponding scan drive signal line. When the first switch control circuit 11 is in the on state, the scan drive signal output by the touch chip 12 through the corresponding scan drive signal line can be transmitted to the corresponding touch signal line through the first switch control circuit 11, and then to the corresponding touch electrode 10 through the corresponding touch signal line. When the first switch control circuit 11 is in the off state, the scan drive signal output by the touch chip 12 through the corresponding scan drive signal line cannot be transmitted to the corresponding touch electrode 10 through the first switch control circuit 11.

[0053] Since the M rows of touch electrodes 10 are divided into multiple groups according to the rows, the first switch control circuit 11 corresponding to the multiple rows of touch electrodes 10 belonging to the multiple groups can be controlled to be turned on simultaneously. In this way, the multiple rows of touch electrodes 10 belonging to the multiple groups can be scanned at the same time, which improves the scanning speed of the touch electrodes 10 on the touch panel.

[0054] In one possible implementation, after entering the touch stage, for each column of touch electrodes 10, the first switch control circuit 11 corresponding to the touch electrode 10 in the i-th row of each group can be turned on; after a preset time is reached, the first switch control circuit 11 corresponding to the touch electrode 10 in the i-th row of each group is turned off, and the first switch control circuit 11 corresponding to the touch electrode 10 in the (i+1)-th row of each group is turned on, (n-1)≥i≥1, where n is the number of rows of touch electrodes 10 in each group. In this way, multiple groups can be scanned in parallel, which greatly reduces the scanning time of the touch electrodes 10.

[0055] Referring to the above example, the touch panel includes 12×18 touch electrodes 10. The touch electrodes 10 in rows 1-6 can be grouped into one group, called group A; and the touch electrodes 10 in rows 7-12 can be grouped into another group, called group B. Each touch electrode 10 in each row belonging to group A is connected to a first switch control circuit 11 connected to drive signal line A; and each touch electrode 10 in each row belonging to group B is connected to a first switch control circuit 11 connected to drive signal line B. After entering the touch control stage, for each row of touch electrodes 10, the first switch control circuit 11 corresponding to the touch electrodes 10 in the first row of groups A and B can be turned on; after a preset time, the first switch control circuit 11 corresponding to the touch electrodes 10 in the first row of groups A and B is turned off, and the first switch control circuit 11 corresponding to the touch electrodes 10 in the second row of groups A and B is turned on; after a preset time, the first switch control circuit 11 corresponding to the touch electrodes 10 in the second row of groups A and B is turned off, and the first switch control circuit 11 corresponding to the touch electrodes 10 in the third row of groups A and B is turned on; ...; and so on, until the first switch control circuit 11 corresponding to the touch electrodes 10 in the sixth row of groups A and B is turned on and the preset time is reached. In this way, parallel scanning of groups A and B can be achieved, greatly reducing the scanning time of the touch electrodes 10.

[0056] In the above embodiment, the touch panel includes: M×N touch electrodes 10 arranged in an array, M×N touch signal lines corresponding to each of the M×N touch electrodes 10, M×N first switch control circuits 11 corresponding to each of the M×N touch electrodes 10, and a touch chip 12; wherein, the M rows of touch electrodes 10 are divided into multiple groups; each touch electrode 10 is connected to a corresponding touch signal line and a corresponding first switch control circuit 11; the first switch control circuits 11 connected to the touch electrodes 10 belonging to the same group in each column are connected to the same scan drive signal line, and each scan drive signal line is connected to the touch chip 12. Since the M rows of touch electrodes 10 are divided into multiple groups, the first switch control circuits 11 corresponding to multiple rows of touch electrodes 10 belonging to multiple groups can be controlled to be turned on simultaneously, thus enabling simultaneous scanning of multiple rows of touch electrodes 10, improving the scanning speed of the touch electrodes 10 on the touch panel, reducing the scanning time, and improving touch performance.

[0057] In some embodiments, the number of rows of touch electrodes 10 is the same in each group.

[0058] The M rows of touch electrodes 10 are divided into multiple groups. For example, the M rows of touch electrodes 10 can be divided into W groups, and the number of rows of touch electrodes 10 in each of the W groups is the same.

[0059] As exemplified above, the touch panel includes 12×18 touch electrodes 10. The touch electrodes 10 in rows 1-6 can be grouped into one group, and the touch electrodes 10 in rows 7-12 can be grouped into another group, resulting in two groups.

[0060] Among them, the first switch control circuit 11 corresponding to the multiple rows of touch electrodes 10 belonging to multiple groups can be turned on simultaneously, so that the multiple rows of touch electrodes 10 belonging to multiple groups can be scanned at the same time. Since the M rows of touch electrodes 10 are divided into multiple groups according to the rows, and the number of rows of touch electrodes 10 in each group is the same, the same switch control method can be set to scan the multiple rows of touch electrodes 10 in each group. This setting method makes the control of parallel scanning simpler.

[0061] Referring to the example above, after entering the touch control stage, for each column of touch electrodes 10, the first switch control circuit 11 corresponding to the touch electrodes 10 in the first row of group A and group B can be turned on; after reaching the preset time, the first switch control circuit 11 corresponding to the touch electrodes 10 in the first row of group A and group B is turned off, and the first switch control circuit 11 corresponding to the touch electrodes 10 in the second row of group A and group B is turned on; after reaching the preset time, the first switch control circuit 11 corresponding to the touch electrodes 10 in the second row of group A and group B is turned off, and the first switch control circuit 11 corresponding to the touch electrodes 10 in the third row of group A and group B is turned on; ...; and so on, until the first switch control circuit 11 corresponding to the touch electrodes 10 in the sixth row of group A and group B is turned on and the preset time is reached. Since both Group A and Group B contain 6 rows of touch electrodes 10, 6 preset time intervals are sufficient to scan all the touch electrodes 10. Group A and Group B use the same switching control method, which makes parallel scanning control simpler.

[0062] In the above embodiments, the number of rows of touch electrodes 10 in each group is the same, and the same switching control method can be set to scan multiple rows of touch electrodes 10 in each group, making the control of parallel scanning simpler.

[0063] In some embodiments, the multiple rows of touch electrodes 10 in each group are equally divided into L subgroups; the first switch control circuit 11 connected to each touch electrode 10 belonging to the same subgroup in each column of touch electrodes 10 is connected to the same second switch control circuit 13; the second switch control circuit 13 connected to each of the L subgroups in the same group is connected to the same scan drive signal line.

[0064] The M rows of touch electrodes 10 are divided into multiple groups. Each group of touch electrodes 10 is further divided into L subgroups. For example, the M rows of touch electrodes 10 can be divided into W groups, where each of the W groups has the same number of rows of touch electrodes 10. Each of the W groups is further divided into L subgroups.

[0065] For example, see Figure 3As shown, the touch panel includes 12×18 touch electrodes 10. The touch electrodes 10 in rows 1-6 can be grouped into one group (referred to as group A for ease of explanation); the touch electrodes 10 in rows 7-12 can be grouped into another group (referred to as group B for ease of explanation), resulting in two groups. Within group A, the touch electrodes 10 in rows 1-3 are divided into a subgroup (referred to as subgroup A1); the touch electrodes 10 in rows 4-6 are divided into another subgroup (referred to as subgroup A2). Thus, group A is divided into subgroup A1 and subgroup A2. Similarly, within group B, the touch electrodes 10 in rows 1-3 are divided into a subgroup (referred to as subgroup B1); the touch electrodes 10 in rows 4-6 are divided into another subgroup (referred to as subgroup B2). Thus, group B is divided into subgroup B1 and subgroup B2.

[0066] In this embodiment, each touch electrode 10 belonging to the same subgroup within each column of touch electrodes 10 is connected to a first switch control circuit 11, which is then connected to the same second switch control circuit 13. The second switch control circuits 13 connected to each of the L subgroups within the same group are connected to the same scan drive signal line. The internal circuit design of the first switch control circuit 11 and the internal circuit design of the second switch control circuit 13 can be the same or different; this embodiment does not limit this.

[0067] Following the examples above, in group A, rows 1-3 of the touch electrodes 10 are divided into a subgroup, called subgroup A1; rows 4-6 of the touch electrodes 10 are divided into a subgroup, called subgroup A2. Thus, group A is divided into subgroup A1 and subgroup A2. Similarly, in group B, rows 1-3 of the touch electrodes 10 are divided into a subgroup, called subgroup B1; rows 4-6 of the touch electrodes 10 are divided into a subgroup, called subgroup B2. Thus, group B is divided into subgroup B1 and subgroup B2. For each of the 18 columns of touch electrodes 10, the first switch control circuit 11 connected to each touch electrode 10 belonging to subgroup A1 in that column is connected to the same second switch control circuit 13, referred to as second switch control circuit 131; the first switch control circuit 11 connected to each touch electrode 10 belonging to subgroup A2 in that column is connected to the same second switch control circuit 13, referred to as second switch control circuit 132; the first switch control circuit 11 connected to each touch electrode 10 belonging to subgroup B1 in that column is connected to the same second switch control circuit 13, referred to as second switch control circuit 133; and the first switch control circuit 11 connected to each touch electrode 10 belonging to subgroup B2 in that column is connected to the same second switch control circuit 13, referred to as second switch control circuit 134. Second switch control circuits 131 and 132 are connected to drive signal line A, and second switch control circuits 133 and 134 are connected to drive signal line B.

[0068] The second switch control circuit 13 is used to control the connection or disconnection between each of the first switch control circuits 11 connected to it and the corresponding scan drive signal line. When both the second switch control circuit 13 and a certain first switch control circuit 11 connected to it are in the on state, the scan drive signal output by the touch chip 12 through the corresponding scan drive signal line can be transmitted to the corresponding touch electrode 10 through the second switch control circuit 13 and the first switch control circuit 11; when the second switch control circuit 13 is in the off state, or when a certain first switch control circuit 11 connected to it is in the off state, the scan drive signal output by the touch chip 12 through the corresponding scan drive signal line cannot be transmitted to the corresponding touch electrode 10.

[0069] In one possible implementation, after entering the touch phase, for each column of touch electrodes 10, the first switch control circuit 11 corresponding to the touch electrode 10 in the i-th row of each group can be controlled to be turned on, and at the same time, the second switch control circuit 13 corresponding to each subgroup of the touch electrode 10 in the i-th row of each group can be controlled to be turned on; after reaching a preset time, the first switch control circuit 11 corresponding to the touch electrode 10 in the i-th row of each group is controlled to be turned off; and the first switch control circuit 11 corresponding to the touch electrode 10 in the (i+1)-th row of each group is controlled to be turned on, and at the same time, the second switch control circuit 13 corresponding to each subgroup of the touch electrode 10 in each group is controlled to be turned on. The second switch control circuit 13 corresponding to each subgroup of the touch electrode 10 in row i+1 is turned on. Within a group, the touch electrode 10 in row i and the touch electrode 10 in row i+1 may belong to the same subgroup. In this case, the second switch control circuit 13 corresponding to both is the same. When controlling the first switch control circuit 11 corresponding to these two touch electrodes to turn on, the same second switch control circuit 13 is controlled to turn on. For this second switch control circuit 13, the isolation is only controlled after all touch electrodes in the subgroup corresponding to this second switch control circuit 13 have been scanned. When the touch electrode 10 in row i and the touch electrode 10 in row i+1 do not belong to the same subgroup, while controlling the first switch control circuit 11 corresponding to the touch electrode in row i to turn off, it is also necessary to control the second switch control circuit 13 corresponding to its subgroup to turn off.

[0070] Where (n-1)≥i≥1, n is the number of rows of touch electrodes 10 in each group, thus enabling parallel scanning of multiple groups and greatly reducing the scanning time of touch electrodes 10.

[0071] Based on the above example, after entering the touch control stage, for each column of touch electrodes 10, the second switch control circuit 131 corresponding to control subgroup A1 is turned on, and the second switch control circuit 133 corresponding to control subgroup B1 is turned on. Then, the first switch control circuit 11 corresponding to the touch electrodes 10 in the first row of control groups A and B can be turned on. After reaching the preset time, the first switch control circuit 11 corresponding to the touch electrodes 10 in the first row of control groups A and B is turned off; the touch electrodes 10 in the second row of control groups A and B are turned on. The first switch control circuit 11 corresponding to 0 is turned on; after a preset time, the first switch control circuit 11 corresponding to the touch electrode 10 in the second row of control group A and group B is turned off; the first switch control circuit 11 corresponding to the touch electrode 10 in the third row of control group A and group B is turned on, and after a preset time, the second switch control circuit 131 corresponding to control subgroup A1 is turned off, and the second switch control circuit 133 corresponding to control subgroup B1 is turned off. Thus, all touch electrodes 10 in subgroup A1 and subgroup B1 are scanned. The control principle of subgroup A2 and subgroup B2 is similar and will not be described in detail here. Parallel scanning of group A and group B is realized, greatly reducing the scanning time of touch electrode 10.

[0072] In the above embodiment, the multiple rows of touch electrodes 10 in each group are equally divided into L subgroups; the first switch control circuit 11 connected to each touch electrode 10 belonging to the same subgroup in each column of touch electrodes 10 is connected to the same second switch control circuit 13; the second switch control circuits 13 connected to each of the L subgroups in the same group are connected to the same scan drive signal line. By controlling the first switch control circuit 11 and the second switch control circuit 13, parallel scanning of the multiple rows of touch electrodes 10 belonging to multiple groups can be achieved. The second switch control circuit 13 can be used as a first-level switch control circuit, and the first switch control circuit 11 can be used as a second-level switch control circuit. This hierarchical switch setting method makes the scan control more precise.

[0073] In some embodiments, see Figure 4 As shown, each first switch control circuit 11 includes a first drive voltage switch 110 and an accompanying voltage switch 111; the source of the first drive voltage switch 110 is connected to the corresponding second switch control circuit 13, and the drain of the first drive voltage switch 110 is connected to the corresponding touch electrode 10; the source of the accompanying voltage switch 111 is connected to a circuit for outputting the accompanying voltage, and the drain of the accompanying voltage switch 111 is connected to the corresponding touch electrode 10.

[0074] In this embodiment, both the first driving voltage switch 110 and the accompanying voltage switch 111 can be field-effect transistors (MOSFETs, or MOS for short). For example, the first driving voltage switch 110 and the accompanying voltage switch 111 can be P-channel MOS transistors or N-channel MOS transistors, and this application embodiment does not limit them to this.

[0075] For example, see Figure 5 The diagram shows a schematic of a first switch control circuit 11, which includes a first drive voltage switch T1.2.2 and a companion voltage switch T1.2.1. The gate of T1.2.2 is connected to a voltage control module, and the voltage at the gate of T1.2.2 is denoted by S1.2.2. The gate of T1.2.1 is also connected to a voltage control module, and the voltage at the gate of T1.2.1 is denoted by S1.2.1. The source of T1.2.2 is connected to a corresponding second switch control circuit 13, and the drain of T1.2.2 is connected to a corresponding touch electrode 10. The source of T1.2.1 is connected to a circuit for outputting the companion voltage, and the drain of T1.2.1 is connected to the corresponding touch electrode 10.

[0076] When it is necessary to control the first switch control circuit 11 to be turned on, S1.2.2 can be set low and S1.2.1 can be set high through the voltage control module. At this time, T1.2.2 is turned on and T1.2.1 is turned off. The scan drive signal output by the touch chip 12 through the corresponding scan drive signal line can be transmitted to the corresponding touch signal line through T1.2.2, and then to the corresponding touch electrode 10 through the corresponding touch signal line. When it is necessary to control the first switch control circuit 11 to be turned off, S1.2.2 can be set high and S1.2.1 can be set low through the voltage control module. At this time, T1.2.2 is turned off and T1.2.1 is turned on. The scan drive signal output by the touch chip 12 through the corresponding scan drive signal line cannot be transmitted to the corresponding touch electrode 10 through T1.2.2. The accompanying voltage provided to the corresponding touch electrode 10 is generally less than the voltage of the scan drive signal.

[0077] In the above embodiments, an internal design for a first switch control circuit 11 is provided. Each first switch control circuit 11 includes a first driving voltage switch 110 and a companion voltage switch 111. The source of the first driving voltage switch 110 is connected to a corresponding second switch control circuit 13, and the drain of the first driving voltage switch 110 is connected to a corresponding touch electrode 10. The source of the companion voltage switch 111 is connected to a circuit for outputting the companion voltage, and the drain of the companion voltage switch 111 is connected to the corresponding touch electrode 10. By controlling the first driving voltage switch 110, parallel scanning of multiple rows of touch electrodes 10 can be achieved, reducing the scanning time of the touch electrodes 10.

[0078] In some embodiments, see Figure 6 As shown, each second switch control circuit 13 includes a second drive voltage switch 130; the source of the second drive voltage switch 130 is connected to the corresponding scan drive signal line, and the drain of the second drive voltage switch 130 is connected to each corresponding first switch control circuit 11.

[0079] Optionally, each second switch control circuit 13 may also include an accompanying voltage switch 131, the source of the accompanying voltage switch 131 being connected to a circuit for outputting the accompanying voltage, and the drain of the accompanying voltage switch 131 being connected to the corresponding first switch control circuit 11.

[0080] Similar to the first switch control circuit 11, the second drive voltage switch 130 and the accompanying voltage switch 131 in the second switch control circuit 13 can both be field-effect transistors (MOSFETs, or MOS for short). For example, the second drive voltage switch 130 and the accompanying voltage switch 131 can be P-channel MOS transistors or N-channel MOS transistors, and this application embodiment does not limit them to this.

[0081] For example, see Figure 7 The diagram shows a schematic of the second switch control circuit 13, which includes a second drive voltage switch T1.2 and a companion voltage switch T1.1. The gate of T1.2 is connected to a voltage control module, and the voltage at the gate of T1.2 is denoted by S1.2. The gate of T1.1 is also connected to a voltage control module, and the voltage at the gate of T1.1 is denoted by S1.1. The source of T1.2 is connected to the corresponding scan drive signal line, and the drain of T1.2 is connected to each of the corresponding first switch control circuits 11. The source of T1.1 is connected to a circuit for outputting the companion voltage, and the drain of T1.1 is connected to each of the corresponding first switch control circuits 11.

[0082] When it is necessary to control the second switch control circuit 13 to be turned on, S1.2 can be set low and S1.1 can be set high through the voltage control module. At this time, T1.2 is turned on and T1.1 is turned off. The scan drive signal output by the touch chip 12 through the corresponding scan drive signal line can be transmitted out through T1.2. When it is necessary to control the second switch control circuit 13 to be turned off, S1.2 can be set high and S1.1 can be set high through the voltage control module. At this time, T1.2 is turned off and T1.1 is turned off. The scan drive signal output by the touch chip 12 through the corresponding scan drive signal line cannot be transmitted out through T1.2.

[0083] In the above embodiments, an internal design for the second switch control circuit 13 is provided. Each second switch control circuit 13 includes a second drive voltage switch transistor 130. The source of the second drive voltage switch transistor 130 is connected to the corresponding scan drive signal line, and the drain of the second drive voltage switch transistor 130 is connected to each corresponding first switch control circuit 11. By controlling the second drive voltage switch transistor 130, parallel scanning of multiple rows of touch electrodes 10 can be achieved, reducing the scanning time of the touch electrodes 10.

[0084] In some embodiments, see Figure 8 As shown, Figure 8 The above view shows a touch panel, which further includes a substrate (not shown), a light-emitting layer 14, and an isolation structure 15. The light-emitting layer 14 and the isolation structure 15 are both formed on the substrate. The isolation structure 15 surrounds the light-emitting layer 14. M×N grooves 16 are formed in the isolation structure 15, and M×N touch electrodes 10 are respectively disposed in the M×N grooves 16. Figure 8 The diagram is illustrated as M×N as a 3×3.

[0085] Among them, the light-emitting layer 14 is a film layer that can emit light. The light-emitting layer 14 contains multiple pixel units, and each pixel unit includes three sub-pixels: R, G, and B.

[0086] Optionally, the isolation structure 15 may include isolation columns and partition layers stacked on the substrate.

[0087] Optionally, the isolation structure 15 has M×N grooves 16, and M×N touch electrodes 10 are respectively disposed in the M×N grooves 16. The touch electrodes 10 and the isolation structure 15 are spaced apart by a certain distance, and an insulating layer is filled between the touch electrodes 10 and the isolation structure 15 to insulate the touch electrodes 10 and the isolation structure 15.

[0088] In the above embodiments, the touch electrode 10 is disposed in the groove 16 opened in the isolation structure 15. The isolation structure 15 is used to separate adjacent light-emitting layers 14. The introduction of the isolation structure 15 eliminates the need to consider the alignment accuracy during evaporation in the process flow, allowing the gap between the light-emitting layers 14 to be designed to a smaller size, thereby increasing the pixel aperture ratio.

[0089] In some embodiments, see Figure 9 As shown, Figure 9The diagram shows a cross-sectional view of a touch panel, which further includes a planarization layer 17 formed on the substrate 18, a light-emitting layer 14 and an isolation structure 15 both formed on the planarization layer 17, and the planarization layer 17 having first vias corresponding to the M×N grooves 16, and the M×N touch electrodes 10 being connected to corresponding touch signal lines through the corresponding first vias.

[0090] The planarization layer 17 is covered with metal layers 19 that correspond one-to-one with the positions of the M×N first vias. The M×N touch electrodes 10 are connected to the corresponding metal layers 19 through the corresponding first vias. Each metal layer 19 is connected to a metal lead as the lead of the corresponding touch electrode 10. The touch signal line corresponding to the touch electrode 10 can be connected to the touch electrode 10 through the lead of the touch electrode 10.

[0091] Optionally, the size of the touch electrode 10 matches the size of the first via, and the touch electrode 10 is at least partially placed in the first via, with the end of the touch electrode 10 placed in contact with the corresponding metal layer 19.

[0092] In the above embodiments, the light-emitting layer 14 and the isolation structure 15 are both formed on the planarization layer 17. The planarization layer 17 has first vias corresponding to the M×N grooves 16 respectively. The touch electrode 10 is connected to the corresponding touch signal line through the first via of the planarization layer 17, which can avoid crosstalk with other conductive structures.

[0093] In some embodiments, the touch panel further includes: a pixel defining layer 20, which defines the position of the light-emitting layer 14. The pixel defining layer 20 is formed on the planarization layer 17, and the isolation structure 15 is formed on the pixel defining layer 20. The pixel defining layer 20 has second vias corresponding to the M×N grooves 16 respectively. The M×N touch electrodes 10 disposed in the M×N grooves 16 are connected to the corresponding touch signal lines through the corresponding first vias and second vias respectively.

[0094] The orthographic projection of the second via on the substrate 18 at least partially overlaps with the orthographic projection of the first via on the substrate 18. The touch electrode 10 is connected to the corresponding metal layer 19 through the first and second vias. Each metal layer 19 is connected to a corresponding metal lead, which serves as the lead for the touch electrode 10. The touch signal line corresponding to the touch electrode 10 can be connected to the touch electrode 10 through the lead of the touch electrode 10.

[0095] Optionally, the size of the touch electrode 10 is matched with the size of the first via and the second via. The touch electrode 10 is at least partially placed in the corresponding first via and the second via. The touch electrode 10 is placed at the end of the first via and contacts the corresponding metal layer 19.

[0096] In the above embodiment, the touch panel further includes a pixel defining layer 20, which defines the position of the light-emitting layer 14. The pixel defining layer 20 has second vias corresponding to the M×N grooves 16. The touch electrodes 10 are connected to the corresponding touch signal lines through the corresponding first and second vias. This avoids crosstalk with other conductive structures.

[0097] In some embodiments, the touch electrode 10 and the isolation structure 15 are made of the same material, and the touch electrode 10 is disposed in the space defined by the corresponding first through hole, the corresponding second through hole and the corresponding groove 16.

[0098] Optionally, the isolation structure 15 includes two parts: an isolation pillar and a partition layer. The touch electrode 10 may also include two components, such as an electrode structure and a partition structure. The material and shape of the electrode structure can be the same as the isolation pillar, and the material and shape of the partition structure can be the same as the partition layer.

[0099] The electrode structure dimensions are matched with the dimensions of the first via and the second via. The electrode structure is at least partially placed in the corresponding first via and the second via, with the remaining part exposed in the corresponding groove 16.

[0100] In the above embodiments, the touch electrode 10 and the isolation structure 15 are made of the same material, and the touch electrode 10 is disposed in the space defined by the corresponding first via, the corresponding second via, and the corresponding groove 16. Due to the introduction of the isolation structure 15, the pixel aperture ratio of the touch panel is higher.

[0101] In some embodiments, the orthographic projection of each touch electrode 10 on the substrate is located within the orthographic projection of the corresponding groove 16 on the substrate.

[0102] As described above, the isolation structure 15 has M×N grooves 16, and M×N touch electrodes 10 are respectively disposed in the M×N grooves 16. The touch electrodes 10 can be configured to occupy only a part of the groove 16, that is, the touch electrodes 10 and the isolation structure 15 are spaced apart by a certain distance. The electrode structure of the touch electrode 10 is usually a trapezoid with a narrow top and a wide bottom. Leaving a certain space between the touch electrodes 10 and the isolation structure 15 can limit the first via, the second via, the corresponding metal layer 19, etc., within the groove 16, further avoiding mutual interference with other structures.

[0103] In some embodiments, a touch panel is provided, see [link to relevant documentation]. Figure 10 As shown, it includes: a plurality of spaced-apart touch electrodes 10, a plurality of touch signal lines corresponding to the plurality of touch electrodes 10, a plurality of first switch control circuits corresponding to the plurality of touch electrodes 10, and a touch chip; wherein, the plurality of touch electrodes 10 are divided into multiple groups according to regions, and each touch electrode 10 is connected to a corresponding touch signal line and a corresponding first switch control circuit; the first switch control circuits connected to the touch electrodes 10 belonging to the same group are connected to the same scan drive signal line, and each scan drive signal line is connected to the touch chip. Figure 10 Let's take the four groups indicated by the dashed boxes as an example.

[0104] The number of touch electrodes 10 in the touch panel provided in this application embodiment can be set according to the application scenario of the touch panel, and this application embodiment does not limit this.

[0105] The touch signal line is used to transmit signals flowing into the corresponding touch electrode 10 and signals flowing out of the corresponding touch electrode 10. The touch panel provided in this application embodiment also includes a plurality of first switch control circuits corresponding to the plurality of touch electrodes 10 respectively, and each touch electrode 10 is connected to the corresponding first switch control circuit through the corresponding touch signal line.

[0106] The multiple touch electrodes 10 are divided into multiple groups according to the region. For example, the horizontal center line and the vertical center line of the touch panel can be determined. The horizontal center line and the vertical center line divide the touch panel into four regions: upper left, upper right, lower left and lower right. The touch electrodes 10 in each region can form a group.

[0107] In this configuration, the first switch control circuits connected to each of the touch electrodes 10 belonging to the same group are connected to the same scan drive signal line. Referring to the example above, the first switch control circuits connected to each of the touch electrodes 10 in the upper left region are connected to the same scan drive signal line; the first switch control circuits connected to each of the touch electrodes 10 in the upper right region are connected to the same scan drive signal line; the first switch control circuits connected to each of the touch electrodes 10 in the lower left region are connected to the same scan drive signal line; and the first switch control circuits connected to each of the touch electrodes 10 in the lower right region are connected to the same scan drive signal line. All four scan drive signal lines are connected to the touch chip.

[0108] In the above embodiments, the touch panel includes: a plurality of spaced-apart touch electrodes 10, a plurality of touch signal lines corresponding to the plurality of touch electrodes 10, a plurality of first switch control circuits corresponding to the plurality of touch electrodes 10, and a touch chip; wherein, the plurality of touch electrodes 10 are divided into multiple groups according to regions, and each touch electrode 10 is connected to a corresponding touch signal line and a corresponding first switch control circuit; the first switch control circuits connected to touch electrodes 10 belonging to the same group are connected to the same scan drive signal line, and each scan drive signal line is connected to the touch chip. Since the plurality of touch electrodes 10 are divided into multiple groups according to regions, the first switch control circuits corresponding to the plurality of touch electrodes 10 belonging to the plurality of groups can be controlled to be turned on simultaneously, thus enabling simultaneous scanning of multiple groups, improving the scanning speed of the touch electrodes 10 on the touch panel, reducing the scanning time, and improving touch performance.

[0109] In some embodiments, the number of rows and columns of touch electrodes 10 in each group is the same.

[0110] The multiple touch electrodes 10 are divided into multiple groups according to the area, and the number of rows and columns of touch electrodes 10 in each group are the same.

[0111] For example, see [link to previous article] Figure 10 As shown, the touch panel includes 12×18 touch electrodes 10. The touch panel can be divided into four areas: upper left, upper right, lower left, and lower right. The touch electrodes 10 in rows 1-6 and columns 1-9 of the upper left area form one group; the touch electrodes 10 in rows 1-6 and columns 10-18 of the upper right area form one group; the touch electrodes 10 in rows 7-12 and columns 1-9 of the lower left area form one group; and the touch electrodes 10 in rows 7-12 and columns 10-18 of the lower right area form one group.

[0112] The first switch control circuit 11 corresponding to multiple touch electrodes 10 belonging to multiple groups can be turned on simultaneously, so that multiple touch electrodes 10 belonging to multiple groups can be scanned at the same time. Since the number of rows and columns of touch electrodes 10 in each group is the same, that is, the number of touch electrodes 10 is the same, each group can be set with the same switch control mode, making the control of parallel scanning simpler.

[0113] In the above embodiments, the number of rows and columns of touch electrodes 10 in each group is the same. In this way, the number of touch electrodes 10 in each group is the same, and each group can be set with the same switching control method, which makes the control of parallel scanning simpler.

[0114] In some embodiments, a display device is also provided, including the touch panel provided in the foregoing embodiments.

[0115] In one exemplary embodiment, such as Figure 11 As shown, a touch scanning method is provided, applied to the touch panel provided in any of the above embodiments. The touch scanning method includes:

[0116] Step 802: After entering the touch control stage, for each column of touch electrodes 10, control the first switch control circuit 11 corresponding to the touch electrode 10 in the i-th row of each group to be turned on.

[0117] Step 804: After the preset time is reached, the first switch control circuit 11 corresponding to the touch electrode 10 in the i-th row of each group is disconnected, and the first switch control circuit 11 corresponding to the touch electrode 10 in the (i+1)-th row of each group is turned on, (n-1)≥i≥1, where n is the number of rows of touch electrodes 10 in each group.

[0118] In this embodiment, when the touch panel refreshes the screen at a certain frequency, each image frame corresponds to a display stage and a touch stage. After entering the touch stage, the touch electrode 10 can be scanned according to the method of the embodiments of this application.

[0119] Specifically, after entering the touch control stage, for each column of touch electrodes 10, the first switch control circuit 11 corresponding to the touch electrode 10 in the first row of each group can be turned on. After a preset time, the first switch control circuit 11 corresponding to the touch electrode 10 in the first row of each group is turned off, and the first switch control circuit 11 corresponding to the touch electrode 10 in the second row of each group is turned on, and so on, until the last row of touch electrodes 10 in each group is scanned. This enables parallel scanning of multiple groups, greatly reducing the scanning time of the touch electrodes 10.

[0120] In the above embodiments, based on the touch panel provided in the aforementioned embodiments, after entering the touch stage, for each column of touch electrodes 10, the first switch control circuit 11 corresponding to the touch electrode 10 in the i-th row of each group is controlled to be turned on. After a preset time is reached, the first switch control circuit 11 corresponding to the touch electrode 10 in the i-th row of each group is controlled to be turned off, and the first switch control circuit 11 corresponding to the touch electrode 10 in the (i+1)-th row of each group is controlled to be turned on, until the last row of touch electrodes 10 in each group is scanned. This multi-row parallel scanning method greatly reduces the scanning time of the touch electrodes 10.

[0121] In some embodiments, the step of controlling the first switch control circuit 11 corresponding to the touch electrode 10 in the i-th row of each group to be turned on; and controlling the first switch control circuit 11 corresponding to the touch electrode 10 in the i-th row of each group to be turned off after a preset time period includes: controlling the first driving voltage switch 110 in the first switch control circuit 11 corresponding to the touch electrode 10 in the i-th row of each group to be turned on and the accompanying voltage switch 111 to be turned off; and controlling the first driving voltage switch 110 in the first switch control circuit 11 corresponding to the touch electrode 10 in the i-th row of each group to be turned off and the accompanying voltage switch 111 to be turned on after a preset time period.

[0122] Each first switch control circuit 11 includes a first driving voltage switch 110 and an accompanying voltage switch 111. The source of the first driving voltage switch 110 is connected to the corresponding second switch control circuit 13, and the drain of the first driving voltage switch 110 is connected to the corresponding touch electrode 10. The source of the accompanying voltage switch 111 is connected to a circuit for outputting the accompanying voltage, and the drain of the accompanying voltage switch 111 is connected to the corresponding touch electrode 10. When it is necessary to control the first switch control circuit 11 corresponding to the touch electrode 10 in the i-th row of each group to be turned on, the first driving voltage switch 110 in the first switch control circuit 11 corresponding to the touch electrode 10 in the i-th row of each group can be turned on and the accompanying voltage switch 111 can be turned off, so that the scanning drive signal can reach the corresponding touch electrode 10. When it is necessary to control the first switch control circuit 11 corresponding to the touch electrode 10 in the i-th row of each group to be disconnected, the first driving voltage switch 110 in the first switch control circuit 11 corresponding to the touch electrode 10 in the i-th row of each group is controlled to be disconnected and the accompanying voltage switch 111 is turned on. At this time, the scanning drive signal cannot reach the corresponding touch electrode 10, and the accompanying voltage is provided to the corresponding touch electrode 10.

[0123] In the above embodiments, by controlling the first driving voltage switch 110 in the first switch control circuit 11, parallel scanning of multiple rows of touch electrodes 10 can be achieved, thereby reducing the scanning time of the touch electrodes 10.

[0124] In some embodiments, the touch scanning method provided in this application further includes the following steps: finding each subgroup to which the touch electrode 10 in the i-th row of each group belongs; controlling the second switch control circuit 13 corresponding to each subgroup to be turned on; for each subgroup, after all touch electrodes in the current subgroup have been scanned, controlling the corresponding second switch control circuit to be turned off.

[0125] In this configuration, the multiple rows of touch electrodes 10 in each group can be equally divided into L subgroups. The first switch control circuit 11 connected to each touch electrode 10 belonging to the same subgroup in each column of touch electrodes 10 is connected to the same second switch control circuit 13. The second switch control circuits 13 connected to each of the L subgroups in the same group are connected to the same scan drive signal line. With this configuration, when it is necessary to control the first switch control circuit 11 corresponding to the touch electrode 10 in the i-th row of each group to be turned on, in addition to controlling the first drive voltage switch transistor 110 to be turned on and the accompanying voltage switch transistor 111 to be turned off in the first switch control circuit 11 corresponding to the touch electrode 10 in the i-th row of each group, it is also necessary to find each subgroup to which the touch electrode 10 in the i-th row belongs and control the second switch control circuit 13 corresponding to each subgroup to be turned on.

[0126] In the above embodiments, by controlling the first switch control circuit 11 and the second switch control circuit 13, parallel scanning of multiple rows of touch electrodes 10 can be achieved. The second switch control circuit 13 can be used as a first-level switch control circuit or a second-level switch control circuit. This hierarchical switch setting method makes the scanning control more precise.

[0127] In the above embodiment, the step of controlling the second switch control circuit 13 corresponding to each subgroup to be turned on includes: controlling the second drive voltage switch tube 130 in the second switch control circuit 13 corresponding to each subgroup to be turned on.

[0128] Each second switch control circuit 13 may include a second drive voltage switch 130; the source of the second drive voltage switch 130 is connected to the corresponding scan drive signal line, and the drain of the second drive voltage switch 130 is connected to each corresponding first switch control circuit 11. With this configuration, when it is necessary to control the conduction of the second switch control circuit 13 corresponding to each subgroup, the second drive voltage switch 130 in the corresponding second switch control circuit 13 of each subgroup can be controlled to conduct.

[0129] In the above embodiments, by controlling the second driving voltage switch 130 in the second switch control circuit 13 and cooperating with the control of the first switch control circuit 11, parallel scanning of multiple rows of touch electrodes 10 can be achieved, reducing the scanning time of the touch electrodes 10.

[0130] For example, see Figure 12As shown, a touch panel containing 12×18 touch electrodes 10 is provided. The touch electrodes 10 in rows 1-6 of the 12 rows can be grouped into one group, called group A; and the touch electrodes 10 in rows 7-12 can be grouped into another group, called group B. Further, the touch electrodes 10 in rows 1-3 of group A are divided into a subgroup, called subgroup A1; and the touch electrodes 10 in rows 4-6 of group A are divided into a subgroup, called subgroup A2. Thus, group A is divided into subgroup A1 and subgroup A2. Similarly, the touch electrodes 10 in rows 1-3 of group B are divided into a subgroup, called subgroup B1; and the touch electrodes 10 in rows 4-6 of group B are divided into a subgroup, called subgroup B2. Thus, group B is divided into subgroup B1 and subgroup B2. Each touch electrode 10 is connected to a corresponding first switch control circuit 11 via a corresponding touch signal line. For each of the 18 columns of touch electrodes 10, the first switch control circuit 11 connected to each touch electrode 10 belonging to subgroup A1 is connected to the same second switch control circuit; the first switch control circuit 11 connected to each touch electrode 10 belonging to subgroup A2 is connected to the same second switch control circuit; the first switch control circuit 11 connected to each touch electrode 10 belonging to subgroup B1 is connected to the same second switch control circuit; and the first switch control circuit 11 connected to each touch electrode 10 belonging to subgroup B2 is connected to the same second switch control circuit. The second switch control circuits connected to subgroup A1 and subgroup A2 are connected to drive signal line A, and the second switch control circuits connected to subgroup B1 and subgroup B2 are connected to drive signal line B. Each first switch control circuit 11 includes a first drive voltage switch transistor 110 and an accompanying voltage switch transistor 111. Each second switch control circuit 13 also includes a second drive voltage switch transistor 130 and an accompanying voltage switch transistor 131. In the first column, the first row of the touch electrode 10 in subgroup A1 is connected to the first switch control circuit 11, which includes a first driving voltage switch T1.2.2 (with a gate voltage of S1.2.2) and an accompanying voltage switch T1.2.1 (with a gate voltage of S1.2.1). The second row of the touch electrode 10 in subgroup A1 is connected to the first switch control circuit 11, which includes a first driving voltage switch T1.2.4 (with a gate voltage of S1.2.4) and an accompanying voltage switch T1.2.3 (with a gate voltage of S1.2.3). The third row of the touch electrode 10 in subgroup A1 is connected to the first switch control circuit 11, which includes a first driving voltage switch T1.2.5 (with a gate voltage of S1.2.5) and an accompanying voltage switch T1.2.6 (with a gate voltage of S1.2.6).The first switch control circuit 11 connected to the first row of touch electrodes 10 in subgroup A2 includes a first driving voltage switch T2.2.2 (with a gate voltage of S2.2.2) and an accompanying voltage switch T2.2.1 (with a gate voltage of S2.2.1). The first switch control circuit 11 connected to the second row of touch electrodes 10 in subgroup A2 includes a first driving voltage switch T2.2.4 (with a gate voltage of S2.2.4) and an accompanying voltage switch T2.2.3 (with a gate voltage of S2.2.3). The first switch control circuit connected to the third row of touch electrodes 10 in subgroup A2... 11 includes a first driving voltage switch T2.2.6 (with a gate voltage of S2.2.6) and an accompanying voltage switch T2.2.5 (with a gate voltage of S2.2.5). The second switch control circuit 13 corresponding to subgroup A1 includes a second driving voltage switch T1.2 (with a gate voltage of S1.2) and an accompanying voltage switch T1.1 (with a gate voltage of S1.1). The second switch control circuit 13 corresponding to subgroup A2 includes a second driving voltage switch T2.2 (with a gate voltage of S2.2) and an accompanying voltage switch T2.1 (with a gate voltage of S2.1). Figure 12 Only one first switch control circuit and one second switch control circuit are shown. Group B and Group A are configured similarly, and the other columns are similar to column 1; they will not be described further here. See [link to documentation]. Figure 13As shown, the switching control circuits in group A and group B can be controlled using this timing diagram. Taking column 1 as an example, during time period T1, S1.2 and S1.2.2 are set low, thus turning on T1.2 and T1.2.2. The scan drive signal output by the driver chip through drive signal line A reaches the first row touch electrode 10 of group A through T1.2 and T1.2.2. At the same time, the gate voltages of T1.1, T1.2.1, T1.2.4, T1.2.6, T2.1, T2.2, T2.2.2, T2.2.4, and T2.2.6 are set high, thus isolating these switching transistors; the gate voltages of T1.2.3, T1.2.5, T2.2.1, T2.2.3, and T2.2.5 are set low, providing accompanying voltages for the corresponding touch electrodes 10. Since each column has the same settings, and the control processes for group B and group A are performed simultaneously, parallel scanning of the first row of group A and the first row of group B can be achieved during time period T1. During time period T2, S1.2 and S1.2.4 are set low, thus turning on T1.2 and T1.2.4. The scan drive signal output by the driver chip through drive signal line A reaches the touch electrode 10 of the second row of group A through T1.2 and T1.2.4. Simultaneously, the gate voltages of T1.1, T1.2.2, T1.2.3, T1.2.6, T2.1, T2.2, T2.2.2, T2.2.4, and T2.2.6 are set high, isolating these switches; the gate voltages of T1.2.1, T1.2.5, T2.2.1, T2.2.3, and T2.2.5 are set low, providing accompanying voltages for the corresponding touch electrodes 10. The T2 time period allows for parallel scanning of the second row of group A and the second row of group B. This example only uses T1 and T2; the control status of each switching transistor during time periods T3, T4, T5, and T6 can be discussed in conjunction with... Figure 13 The timing diagram shown is presented. With the above settings, all touch electrodes 10 can be scanned within the above 6 time periods, which is twice as fast as line-by-line scanning.

[0131] It should be understood that although the steps in the flowcharts of the embodiments described above are shown sequentially according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some steps in the flowcharts of the embodiments described above may include multiple steps or multiple stages. These steps or stages are not necessarily completed at the same time, but can be executed at different times. The execution order of these steps or stages is not necessarily sequential, but can be performed alternately or in turn with other steps or at least some of the steps or stages of other steps.

[0132] Based on the same inventive concept, this application also provides a touch scanning device for implementing the touch scanning method described above. The solution provided by this device is similar to the solution described in the above method; therefore, the specific limitations in one or more touch scanning device embodiments provided below can be found in the limitations of the touch scanning method described above, and will not be repeated here.

[0133] In one exemplary embodiment, such as Figure 14 As shown, a touch scanning device is provided, comprising:

[0134] Decision module 1101 is used to determine whether the touch phase has been entered;

[0135] The control module 1102 is used to, after entering the touch stage, control the first switch control circuit corresponding to the touch electrode in the i-th row of each group to be turned on for each column of touch electrodes; after reaching the preset time, control the first switch control circuit corresponding to the touch electrode in the i-th row of each group to be turned off, and control the first switch control circuit corresponding to the touch electrode in the (i+1)-th row of each group to be turned on, (n-1)≥i≥1, where n is the number of rows of touch electrodes in each group.

[0136] In some embodiments, the control module 1102 is used to control the first driving voltage switch transistor in the first switch control circuit corresponding to the touch electrode in the i-th row of each group to be turned on and the accompanying voltage switch transistor to be turned off; after a preset time is reached, the first driving voltage switch transistor in the first switch control circuit corresponding to the touch electrode in the i-th row of each group is controlled to be turned off and the accompanying voltage switch transistor to be turned on.

[0137] In some embodiments, the control module 1102 is used to find the subgroup to which the touch electrode in the i-th row belongs in each group; control the second switch control circuit corresponding to each subgroup to be turned on; and control the second switch control circuit corresponding to each subgroup to be turned off after a preset time period is reached.

[0138] In some embodiments, the control module 1102 is used to control the second drive voltage switch tube in the second switch control circuit corresponding to each subgroup to turn on.

[0139] Each module in the aforementioned touch scanning device can be implemented entirely or partially through software, hardware, or a combination thereof. These modules can be embedded in the processor of a computer device in hardware form or independent of it, or stored in the memory of a computer device in software form, so that the processor can call and execute the operations corresponding to each module.

[0140] In one exemplary embodiment, a touch chip is provided, including a memory and a processor. The memory stores a computer program, and the processor executes the computer program to perform the following steps:

[0141] After entering the touch stage, for each column of touch electrodes, the first switch control circuit corresponding to the touch electrode in the i-th row of each group is turned on.

[0142] After the preset time is reached, the first switch control circuit corresponding to the touch electrode in the i-th row of each group is disconnected, and the first switch control circuit corresponding to the touch electrode in the (i+1)-th row of each group is turned on, (n-1)≥i≥1, where n is the number of rows of touch electrodes in each group.

[0143] In one embodiment, the processor, when executing a computer program, also performs the following steps:

[0144] The first driving voltage switch in the first switch control circuit corresponding to the touch electrode in the i-th row of each group is turned on and the accompanying voltage switch is turned off.

[0145] After the preset time is reached, the first driving voltage switch in the first switch control circuit corresponding to the touch electrode in the i-th row of each group is disconnected and the accompanying voltage switch is turned on.

[0146] In one embodiment, the processor, when executing a computer program, also performs the following steps:

[0147] Find the subgroup to which the touch electrode in row i belongs in each group; control the second switch control circuit corresponding to each subgroup to turn on; after the preset time is reached, control the second switch control circuit corresponding to each subgroup to turn off.

[0148] In one embodiment, the processor, when executing a computer program, also performs the following steps:

[0149] The second drive voltage switch transistor in the second switch control circuit corresponding to each subgroup is turned on.

[0150] In one embodiment, a computer-readable storage medium is provided having a computer program stored thereon, the computer program performing the following steps when executed by a processor:

[0151] After entering the touch stage, for each column of touch electrodes, the first switch control circuit corresponding to the touch electrode in the i-th row of each group is turned on.

[0152] After the preset time is reached, the first switch control circuit corresponding to the touch electrode in the i-th row of each group is disconnected, and the first switch control circuit corresponding to the touch electrode in the (i+1)-th row of each group is turned on, (n-1)≥i≥1, where n is the number of rows of touch electrodes in each group.

[0153] In one embodiment, when the computer program is executed by a processor, it also performs the following steps:

[0154] The first driving voltage switch in the first switch control circuit corresponding to the touch electrode in the i-th row of each group is turned on and the accompanying voltage switch is turned off.

[0155] After the preset time is reached, the first driving voltage switch in the first switch control circuit corresponding to the touch electrode in the i-th row of each group is disconnected and the accompanying voltage switch is turned on.

[0156] In one embodiment, when the computer program is executed by a processor, it also performs the following steps:

[0157] Find the subgroup to which the touch electrode in row i belongs in each group; control the second switch control circuit corresponding to each subgroup to turn on; after the preset time is reached, control the second switch control circuit corresponding to each subgroup to turn off.

[0158] In one embodiment, when the computer program is executed by a processor, it also performs the following steps:

[0159] The second drive voltage switch transistor in the second switch control circuit corresponding to each subgroup is turned on.

[0160] In one embodiment, a computer program product is provided, including a computer program that, when executed by a processor, performs the following steps:

[0161] After entering the touch stage, for each column of touch electrodes, the first switch control circuit corresponding to the touch electrode in the i-th row of each group is turned on.

[0162] After the preset time is reached, the first switch control circuit corresponding to the touch electrode in the i-th row of each group is disconnected, and the first switch control circuit corresponding to the touch electrode in the (i+1)-th row of each group is turned on, (n-1)≥i≥1, where n is the number of rows of touch electrodes in each group.

[0163] In one embodiment, when the computer program is executed by a processor, it also performs the following steps:

[0164] The first driving voltage switch in the first switch control circuit corresponding to the touch electrode in the i-th row of each group is turned on and the accompanying voltage switch is turned off.

[0165] After the preset time is reached, the first driving voltage switch in the first switch control circuit corresponding to the touch electrode in the i-th row of each group is disconnected and the accompanying voltage switch is turned on.

[0166] In one embodiment, when the computer program is executed by a processor, it also performs the following steps:

[0167] Find the subgroup to which the touch electrode in row i belongs in each group; control the second switch control circuit corresponding to each subgroup to turn on; after the preset time is reached, control the second switch control circuit corresponding to each subgroup to turn off.

[0168] In one embodiment, when the computer program is executed by a processor, it also performs the following steps:

[0169] The second drive voltage switch transistor in the second switch control circuit corresponding to each subgroup is turned on.

[0170] Those skilled in the art will understand that all or part of the processes in the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium, and when executed, it can include the processes of the embodiments of the above methods. Any references to memory, databases, or other media used in the embodiments provided in this application can include at least one of non-volatile memory and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM). The databases involved in the embodiments provided in this application may include at least one type of relational database and non-relational database. Non-relational databases may include, but are not limited to, blockchain-based distributed databases. The processors involved in the embodiments provided in this application may be general-purpose processors, central processing units, graphics processing units, digital signal processors, programmable logic devices, quantum computing-based data processing logic devices, artificial intelligence (AI) processors, etc., and are not limited to these.

[0171] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this application.

[0172] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this application should be determined by the appended claims.

Claims

1. A touch panel, characterized in that, include: The system comprises an array of M×N touch electrodes, M×N touch signal lines corresponding to each of the M×N touch electrodes, M×N first switch control circuits corresponding to each of the M×N touch electrodes, and a touch chip; wherein... The M rows of touch electrodes are divided into multiple groups; each touch electrode is connected to a corresponding touch signal line and a corresponding first switch control circuit; the first switch control circuits of touch electrodes belonging to the same group in each column are connected to the same scan drive signal line, and each scan drive signal line is connected to the touch chip.

2. The touch panel according to claim 1, characterized in that, The number of rows of touch electrodes is the same in each group.

3. The touch panel according to claim 1, characterized in that, Each row of touch electrodes in each group is equally divided into L subgroups; the first switch control circuit connected to each touch electrode in the same subgroup in each column is connected to the same second switch control circuit; the second switch control circuits connected to each of the L subgroups in the same group are connected to the same scan drive signal line.

4. The touch panel according to claim 1, characterized in that, Each first switch control circuit includes a first drive voltage switch transistor and an accompanying voltage switch transistor; the source of the first drive voltage switch transistor is connected to the corresponding second switch control circuit, and the drain of the first drive voltage switch transistor is connected to the corresponding touch electrode; the source of the accompanying voltage switch transistor is connected to a circuit for outputting the accompanying voltage, and the drain of the accompanying voltage switch transistor is connected to the corresponding touch electrode.

5. The touch panel according to claim 3, characterized in that, Each second switch control circuit includes a second drive voltage switch transistor; the source of the second drive voltage switch transistor is connected to the corresponding scan drive signal line, and the drain of the second drive voltage switch transistor is connected to each corresponding first switch control circuit.

6. The touch panel according to claim 1, characterized in that, The touch panel further includes: a substrate, a light-emitting layer, and an isolation structure; the light-emitting layer and the isolation structure are both formed on the substrate, the isolation structure surrounds the light-emitting layer, and M×N grooves are formed in the isolation structure, and the M×N touch electrodes are respectively disposed in the M×N grooves; The isolation structure and the touch electrode are spaced apart.

7. The touch panel according to claim 6, characterized in that, The touch panel further includes: a planarization layer formed on the substrate, the light-emitting layer and the isolation structure both formed on the planarization layer, the planarization layer having first vias corresponding to the M×N grooves respectively, and the M×N touch electrodes being connected to the corresponding first vias and the corresponding touch signal lines respectively.

8. The touch panel according to claim 7, characterized in that, The touch panel further includes: a pixel defining layer, which defines the position of the light-emitting layer. The pixel defining layer is formed on the planarization layer. The isolation structure is formed on the pixel defining layer. The pixel defining layer has second vias corresponding to the M×N grooves. The M×N touch electrodes disposed in the M×N grooves are connected to the corresponding touch signal lines through the corresponding first vias and second vias.

9. The touch panel according to claim 8, characterized in that, The touch electrode and the isolation structure are made of the same material, and the touch electrode is disposed in the space defined by the first via, the second via, and the groove.

10. The touch panel according to claim 6, characterized in that, The orthographic projection of each touch electrode on the substrate lies within the orthographic projection of the corresponding groove on the substrate.

11. A display device, characterized in that, Includes the touch panel as described in any one of claims 1-10.

12. A touch panel, characterized in that, include: The system includes multiple spaced-apart touch electrodes, multiple touch signal lines corresponding to each touch electrode, multiple first switch control circuits corresponding to each touch electrode, and a touch chip; wherein... Multiple touch electrodes are divided into multiple groups according to region. Each touch electrode is connected to a corresponding first switch control circuit through a corresponding touch signal line. The first switch control circuits of touch electrodes belonging to the same group are connected to the same scan drive signal line, and each scan drive signal line is connected to the touch chip.

13. The touch panel according to claim 12, characterized in that, The number of rows and columns of touch electrodes are the same in each group.

14. A touch scanning method, characterized in that, Applied to the touch panel according to any one of claims 1-10, the method comprises: After entering the touch stage, for each column of touch electrodes, the first switch control circuit corresponding to the touch electrode in the i-th row of each group is turned on. After the preset time is reached, the first switch control circuit corresponding to the touch electrode in the i-th row of each group is disconnected, and the first switch control circuit corresponding to the touch electrode in the (i+1)-th row of each group is turned on, (n-1)≥i≥1, where n is the number of rows of touch electrodes in each group.

15. The method according to claim 14, characterized in that, The control circuit for turning on the first switch corresponding to the touch electrode in the i-th row of each group; and after a preset time, the control circuit for turning off the first switch corresponding to the touch electrode in the i-th row of each group, including: The first driving voltage switch in the first switch control circuit corresponding to the touch electrode in the i-th row of each group is turned on and the accompanying voltage switch is turned off. After the preset time is reached, the first driving voltage switch in the first switch control circuit corresponding to the touch electrode in the i-th row of each group is disconnected and the accompanying voltage switch is turned on.

16. The method according to claim 14, characterized in that, The method further includes: Find the subgroup to which the touch electrode in row i belongs in each group; control the second switch control circuit corresponding to each subgroup to turn on; for each subgroup, after all touch electrodes in the current subgroup have been scanned, control the corresponding second switch control circuit to turn off.

17. The method according to claim 16, characterized in that, The control circuit for turning on the second switch corresponding to each subgroup includes: The second drive voltage switch transistor in the second switch control circuit corresponding to each subgroup is turned on.

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