Touch panel and driving method thereof, and display device

Abstract

The embodiment of the present application provides a touch panel and a driving method thereof, and a display device, wherein the touch panel includes a plurality of touch electrode groups, each of which includes at least one touch electrode block; in a touch stage, a target touch electrode group among the plurality of touch electrode groups receives a first touch driving signal, and one or more touch electrode groups other than the target touch electrode group among the plurality of touch electrode groups receive a constant voltage signal, and the target touch electrode group is at least one touch electrode group. The embodiment of the present application can reduce the touch noise of the touch panel, and improve the touch sensitivity and touch accuracy of the touch panel.

Description

Technical Field

[0001] The present application belongs to the field of display technology, and in particular, relates to a touch panel and a driving method thereof, and a display device. Background Art

[0002] With the development of display technology, touch panels are widely used in various electronic products such as mobile phones, televisions, digital cameras, laptops, desktop computers, etc. Touch panels are roughly divided into resistive touch panels, capacitive touch panels, optical touch panels, acoustic wave touch panels and electromagnetic touch panels according to their different sensing methods. Capacitive touch panels have been widely used in electronic products because they have the advantages of fast response time, good reliability and high durability.

[0003] However, the inventors of the present application have discovered that the current capacitive touch panels have the problems of large touch noise, poor touch sensitivity and accuracy angle during touch control. Summary of the invention

[0004] The embodiments of the present application provide a touch panel and a driving method thereof, and a display device, which can reduce the touch noise of the capacitive touch panel and improve the touch sensitivity and touch accuracy of the capacitive touch panel.

[0005] In the first aspect, an embodiment of the present application provides a touch panel, which includes multiple touch electrode groups, each touch electrode group includes at least one touch electrode block; in the touch stage, a target touch electrode group among the multiple touch electrode groups receives a first touch drive signal, and one or more touch electrode groups among the multiple touch electrode groups except the target touch electrode group receive a constant voltage signal, and the target touch electrode group is at least one touch electrode group.

[0006] According to an implementation of the first aspect of the present application, in the touch stage, at least one touch electrode group adjacent to the target touch electrode group receives a second touch drive signal.

[0007] In this way, in addition to the target touch electrode group, at least one touch electrode group adjacent to the target touch electrode group also participates in touch scanning, which can reduce the burden of the target touch electrode group, such as reducing the parasitic capacitance on the target touch electrode group and improving touch sensitivity.

[0008] According to any of the aforementioned embodiments of the first aspect of the present application, the touch electrode blocks in the touch electrode group are arranged in sequence along the row direction or column direction of the touch panel. In the touch stage, a touch electrode group adjacent to the first side of the target touch electrode group and / or a touch electrode group adjacent to the second side of the target touch electrode group receive a second touch drive signal, and the first side and the second side are respectively located on both sides of the setting direction of the touch electrode blocks in the target touch electrode group.

[0009] The inventor of the present application has found that when the target touch electrode group and its adjacent touch electrode group participate in touch scanning, the touch sensitivity can be well guaranteed. Since only the target touch electrode group and its adjacent touch electrode group participate in touch scanning, other touch electrode groups maintain a constant voltage and do not generate coupling capacitance with the cathode, so while ensuring good touch sensitivity, the mutual interference between the touch scanning and the cathode can be reduced as much as possible, the touch noise of the touch panel can be reduced, and the influence of the signal disturbance between the touch electrode and the cathode on the transmission of the touch sensing signal can be reduced, thereby improving the touch sensitivity and touch accuracy of the touch panel.

[0010] According to any of the aforementioned implementations of the first aspect of the present application, the touch panel may further include multiple touch signal lines; different touch electrode blocks are insulated from each other, and each touch electrode block is electrically connected to the driving chip via a separate touch signal line.

[0011] In this way, for the self-capacitance touch panel, during the touch stage, since some touch electrode groups other than the target touch electrode group in the multiple touch electrode groups receive constant voltage signals, no coupling capacitance will be generated between the touch electrode groups that receive the constant voltage signals and the cathode of the touch panel, thereby reducing the mutual interference between the touch scan and the cathode, reducing the touch noise of the self-capacitance touch panel, and further reducing the influence of the signal disturbance between the touch electrode and the cathode on the transmission of the touch sensing signal, thereby improving the touch sensitivity and touch accuracy of the self-capacitance touch panel.

[0012] According to any of the aforementioned embodiments of the first aspect of the present application, multiple touch electrode groups are arranged in sequence along a first direction, each touch electrode group includes multiple touch electrode blocks arranged in sequence along a second direction, the first direction intersects with the second direction, and the first direction is the row direction or column direction of the touch panel.

[0013] That is, when the touch panel is a self-capacitive touch panel, the plurality of touch electrode blocks in the self-capacitive touch panel may be scanned in rows or columns.

[0014] According to any of the aforementioned embodiments of the first aspect of the present application, when at least one touch electrode group adjacent to the target touch electrode group receives a second touch drive signal, the first touch drive signal and the second touch drive signal have the same period and a phase difference of (T / 2)*p, where T represents the period of the first touch drive signal and the second touch drive signal, and p is an even number.

[0015] In this way, since the first touch drive signal received by the target touch electrode group and the second touch drive signal received by the touch electrode group adjacent to the target touch electrode group have the same period and the phase difference is an even multiple of half a period, the touch scanning action of the target touch electrode group and the touch electrode group adjacent to the target touch electrode group can be kept consistent, thereby improving the touch sensitivity and the signal-to-noise ratio of the touch sensing signal.

[0016] According to any of the aforementioned implementations of the first aspect of the present application, a period of the first touch driving signal and a period of the second touch driving signal are 2π.

[0017] According to any of the aforementioned embodiments of the first aspect of the present application, a plurality of touch electrode groups are arranged in sequence along a first direction, each touch electrode group includes a plurality of touch electrode blocks arranged in sequence along a second direction, the first direction intersects with the second direction, and the first direction is the row direction or column direction of the touch panel; the touch electrode group is a touch drive electrode group, the touch electrode block is a touch drive electrode block, and the plurality of touch drive electrode blocks in the touch drive electrode group are electrically connected to each other; the touch panel further includes a plurality of touch sensing electrode groups, each touch sensing electrode group includes a plurality of touch sensing electrodes arranged in sequence along the first direction and electrically connected to each other; the touch drive electrode blocks and the touch sensing electrodes are insulated from each other.

[0018] In this way, for the mutual capacitance touch panel, in the touch stage, since some touch electrode groups other than the target touch electrode group in the multiple touch electrode groups receive constant voltage signals, no coupling capacitance will be generated between the touch electrode groups that receive the constant voltage signals and the cathode of the touch panel, thereby reducing the mutual interference between the touch scan and the cathode, reducing the touch noise of the mutual capacitance touch panel, and further reducing the influence of the signal disturbance between the touch electrode and the cathode on the transmission of the touch sensing signal, thereby improving the touch sensitivity and touch accuracy of the mutual capacitance touch panel.

[0019] According to any of the aforementioned embodiments of the first aspect of the present application, when at least one touch electrode group adjacent to the target touch electrode group in the first direction receives the second touch drive signal, the first touch drive signal and the second touch drive signal have the same period and a phase difference of (T / 2)*q, where T represents the period of the first touch drive signal and the second touch drive signal, and q is an odd number.

[0020] In this way, since the first touch drive signal received by the target touch electrode group and the second touch drive signal received by the touch electrode group adjacent to the target touch electrode group have the same period and a phase difference of an odd multiple of half a period, the interference effects of the target touch electrode group and the touch electrode group adjacent to the target touch electrode group on the cathode can offset each other, further reducing the mutual interference between the touch scan and the cathode, reducing the touch noise of the self-capacitance touch panel, and improving the touch sensitivity and touch accuracy of the mutual capacitance touch panel.

[0021] According to any of the aforementioned implementations of the first aspect of the present application, a period of the first touch driving signal and a period of the second touch driving signal are 2π.

[0022] According to any of the aforementioned embodiments of the first aspect of the present application, a plurality of touch electrode groups are located in a touch function layer of a touch panel, the touch panel further includes a substrate and a cathode layer, and along the thickness direction of the touch panel, the cathode layer is located between the substrate and the touch function layer; the cathode layer includes a plurality of strip-shaped cathode units, and in the thickness direction of the touch panel, the orthographic projection of the touch electrode block on the substrate at least partially overlaps with the orthographic projection of the cathode unit on the substrate.

[0023] In this way, since the area of ​​the strip-shaped cathode unit facing the touch electrode block is greatly reduced compared to the cathode layer set on the entire surface, the coupling capacitance between the touch electrode block and the cathode can be further reduced, and the mutual interference between the touch scanning and the cathode can be further reduced, thereby reducing the touch noise of the self-capacitance touch panel and improving the touch sensitivity and touch accuracy of the mutual capacitance touch panel.

[0024] According to any of the aforementioned embodiments of the first aspect of the present application, the touch panel includes a stacked substrate, a display function layer, a packaging layer and a touch function layer, the display function layer includes an anode layer, a light-emitting layer and a cathode layer, and the anode layer, the light-emitting layer and the cathode layer are arranged in sequence along the direction from the substrate to the touch function layer; the touch function layer includes a touch electrode layer, an insulating layer and a wiring layer, the touch electrode block is located in the touch electrode layer, the wiring layer includes a touch signal line, and the touch signal line is electrically connected to the touch electrode block through a via on the insulating layer.

[0025] According to any of the aforementioned embodiments of the first aspect of the present application, when the touch panel includes a touch sensing electrode group, and the touch sensing electrode group includes a plurality of touch sensing electrodes, the routing layer further includes a bridge, and the bridge connects any two adjacent touch sensing electrodes through vias on the insulating layer.

[0026] In the second aspect, an embodiment of the present application provides a method for driving a touch panel, wherein the touch panel includes multiple touch electrode groups, each touch electrode group includes at least one touch electrode block; the method includes: in a touch stage, providing a first touch drive signal to a target touch electrode group among the multiple touch electrode groups, and providing a constant voltage signal to one or more touch electrode groups among the multiple touch electrode groups except the target touch electrode group, wherein the target touch electrode group is at least one touch electrode group.

[0027] In a third aspect, an embodiment of the present application provides a display device, which includes a touch panel provided in the first aspect.

[0028] The touch panel and its driving method and display device of the embodiment of the present application, the touch panel includes multiple touch electrode groups, each touch electrode group includes at least one touch electrode block; in the touch stage, the target touch electrode group among the multiple touch electrode groups receives the first touch drive signal, and one or more touch electrode groups other than the target touch electrode group among the multiple touch electrode groups receive a constant voltage signal, and the target touch electrode group is at least one touch electrode group. In the touch stage, since some touch electrode groups other than the target touch electrode group among the multiple touch electrode groups receive a constant voltage signal, no coupling capacitance is generated between the part of the touch electrode group receiving the constant voltage signal and the cathode of the touch panel, thereby reducing the mutual interference between the touch scan and the cathode, reducing the touch noise of the touch panel, and further reducing the influence of the signal disturbance between the touch electrode and the cathode on the transmission of the touch sensing signal, thereby improving the touch sensitivity and touch accuracy of the touch panel. At the same time, it can reduce the disturbance of the touch signal to the cathode and improve the display quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solution of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0030] Figure 1 A structural schematic diagram of a capacitive touch panel;

[0031] Figure 2 A schematic top view of a touch panel provided in an embodiment of the present application;

[0032] Figure 3a Another schematic top view of a touch panel provided in an embodiment of the present application;

[0033] Figure 3b Another schematic top view of a touch panel provided in an embodiment of the present application;

[0034] Figure 4Another schematic top view of a touch panel provided in an embodiment of the present application;

[0035] Figure 5 A scanning schematic diagram of a touch panel provided in an embodiment of the present application;

[0036] Figure 6 Another scanning schematic diagram of the touch panel provided in the embodiment of the present application;

[0037] Figure 7 A further scanning schematic diagram of a touch panel provided in an embodiment of the present application;

[0038] Figure 8 A further scanning schematic diagram of a touch panel provided in an embodiment of the present application;

[0039] Fig. 9 A further scanning schematic diagram of a touch panel provided in an embodiment of the present application;

[0040] Fig.10 A scanning schematic diagram when the touch panel provided in the embodiment of the present application is a self-capacitive touch panel;

[0041] Fig.11 A scanning schematic diagram when the touch panel provided in the embodiment of the present application is a mutual capacitance touch panel;

[0042] Fig.12 A schematic cross-sectional view of a touch panel provided in an embodiment of the present application;

[0043] Fig.13 A schematic top view of a cathode layer in a touch panel provided in an embodiment of the present application;

[0044] Fig.14 Another cross-sectional schematic diagram of a touch panel provided in an embodiment of the present application;

[0045] Fig.15 A further cross-sectional schematic diagram of a touch panel provided in an embodiment of the present application;

[0046] Fig.16 A schematic diagram of a flow chart of a method for driving a touch panel provided in an embodiment of the present application;

[0047] Fig.17 Another schematic diagram of a flow chart of a method for driving a touch panel provided in an embodiment of the present application;

[0048] Fig.18 A schematic diagram of the structure of a display device provided in an embodiment of the present application;

[0049] Fig.19 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0050] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present application, rather than to limit the present application. For those skilled in the art, the present application can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by illustrating the examples of the present application.

[0051] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "include..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0052] It should be understood that the term "and / or" used in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0053] In the embodiments of the present application, the term “electrically connected” may refer to a direct electrical connection between two components, or may refer to an electrical connection between two components via one or more other components.

[0054] It is obvious to those skilled in the art that various modifications and changes can be made in the present application without departing from the spirit or scope of the present application. Therefore, the present application is intended to cover modifications and changes of the present application that fall within the scope of the corresponding claims (technical solutions for protection) and their equivalents. It should be noted that the implementation methods provided in the embodiments of the present application can be combined with each other without contradiction.

[0055] Before describing the technical solutions provided by the embodiments of the present application, in order to facilitate the understanding of the embodiments of the present application, the present application first specifically describes the problems existing in the related art:

[0056] As mentioned above, the inventors of the present application have discovered that the current capacitive touch panels have the problems of large touch noise, poor touch sensitivity and accuracy during touch control.

[0057] In order to solve the problem of large touch noise, poor touch sensitivity and accuracy in capacitive touch panels, the inventors of the present application first studied and analyzed the root causes of the above technical problems. The specific research and analysis process is as follows:

[0058] The inventor of this application discovered that Figure 1 As shown, the capacitive touch panel 10' includes a cathode layer 101' and a touch electrode layer 102', the cathode layer 101' and the touch electrode layer 102' are arranged opposite to each other, and the cathode layer 101' and the touch electrode layer 102' are usually arranged on the entire surface, that is, the cathode layer 101' and the touch electrode layer 102' are almost present in the entire display area. Therefore, the facing area between the cathode layer 101' and the touch electrode layer 102' is very large, resulting in a large coupling capacitance between the cathode layer 101' and the touch electrode layer 102'.

[0059] In addition, since the distance between the cathode layer 101' and the touch electrode layer 102' is very small, usually at the micrometer level, and the capacitance is inversely proportional to the distance between the two plates of the capacitor, the coupling capacitance between the cathode layer 101' and the touch electrode layer 102' will be further increased.

[0060] At present, the capacitive touch panel 10' usually adopts a design of simultaneous display and touch scanning, that is, while the cathode layer 101' receives the display signal, the touch electrode layer 102' receives the touch signal, so as to realize simultaneous display and touch. While displaying, the touch electrode 102a' of the touch electrode layer 102' will perform a high-frequency scan on the entire surface. As analyzed above, a large coupling capacitance will be generated between the cathode layer 101' and the touch electrode layer 102', and then the interference between the touch signal and the display signal will be large, that is, the touch noise is large. The signal disturbance between the touch electrode and the cathode will have a great impact on the transmission of the touch sensing signal, affecting the feedback of the touch sensing signal, so that the touch sensitivity and touch accuracy of the capacitive touch panel 10' are poor. On the other hand, the touch signal has a full-surface interference with the cathode, which is not conducive to the improvement of the display quality.

[0061] In view of the above research findings of the inventors, the embodiments of the present application provide a touch panel and its driving method, and a display device, which can solve the technical problems of high touch noise, poor touch sensitivity and accuracy, and poor display quality of the touch panel existing in the related art.

[0062] The technical concept of the embodiment of the present application is that: in the touch stage, the target touch electrode group among the multiple touch electrode groups receives the first touch drive signal, and one or more touch electrode groups other than the target touch electrode group among the multiple touch electrode groups receive a constant voltage signal. In this way, since some touch electrode groups other than the target touch electrode group among the multiple touch electrode groups receive a constant voltage signal, no coupling capacitance will be generated between the touch electrode groups that receive the constant voltage signal and the cathode of the touch panel, thereby reducing the mutual interference between the touch scan and the cathode, reducing the touch noise of the touch panel, and further reducing the influence of the signal disturbance between the touch electrode and the cathode on the transmission of the touch sensing signal, thereby improving the touch sensitivity and touch accuracy of the touch panel. At the same time, it can reduce the disturbance of the touch signal to the cathode and improve the display quality.

[0063] The following first introduces the touch panel provided in the embodiment of the present application.

[0064] Figure 2 A schematic top view of a touch panel provided in an embodiment of the present application. Figure 2 As shown, the touch panel 20 provided in the embodiment of the present application includes a plurality of touch electrode groups 200, each of which includes at least one touch electrode block 200a. The touch panel 20 may be referred to as a touch display panel, and the touch panel 20 includes, for example, but is not limited to, a liquid crystal display (LCD) panel or an organic light emitting diode (OLED) display panel. Unless otherwise specified, the OLED display panel is used for description herein.

[0065] In the touch stage, the target touch electrode group 200A in the multiple touch electrode groups 200 receives the first touch drive signal, thereby realizing touch scanning. Among them, the target touch electrode group 200A can be one, two or more touch electrode groups 200 in the multiple touch electrode groups 200. That is, when the touch panel 20 is a mutual capacitance touch panel, the touch panel 20 can be scanned in sequence by rows of touch electrode blocks 200a or by columns of touch electrode blocks 200a, or it can be scanned simultaneously by multiple rows of touch electrode blocks 200a or multiple columns of touch electrode blocks 200a, which is not limited in this embodiment of the present application. When the touch panel 20 is a self-capacitance touch panel, the touch panel 20 can be scanned in sequence by touch electrode blocks 200a one by one, or it can be scanned simultaneously by multiple touch electrode blocks 200a. Of course, when the touch panel 20 is a self-capacitive touch panel, the touch panel 20 may also scan the touch electrode blocks 200a row by row or column by column in sequence, or may scan multiple rows of touch electrode blocks 200a or multiple columns of touch electrode blocks 200a simultaneously, which is not limited in the embodiments of the present application.

[0066] At the same time, in the touch stage, one or more touch electrode groups 200 other than the target touch electrode group 200A in the multiple touch electrode groups 200 receive a constant voltage signal. For example, assuming that the touch panel 20 includes 100 touch electrode groups, and the target touch electrode group 200A is one of the 100 touch electrode groups, then, there are 99 touch electrode groups other than the target touch electrode group 200A in the 100 touch electrodes. When the target touch electrode group 200A receives the first touch drive signal, all of the 99 touch electrode groups may receive a constant voltage signal, or only one, two, or other number of touch electrode groups in the 99 touch electrode groups may receive a constant voltage signal, and the embodiment of the present application is not limited to this.

[0067] In the touch stage, since at least part of the touch electrode groups 200 except the target touch electrode group 200A in the multiple touch electrode groups 200 receive constant voltage signals, that is, the potential remains unchanged, no coupling capacitance will be generated between the part of the touch electrode groups 200 receiving the constant voltage signal and the cathode of the touch panel 20, thereby reducing the mutual interference between the touch scan and the cathode, reducing the touch noise of the touch panel 20, and further reducing the influence of the signal disturbance between the touch electrode and the cathode on the transmission of the touch sensing signal, thereby improving the touch sensitivity and touch accuracy of the touch panel. At the same time, it can reduce the disturbance of the touch signal to the cathode and improve the display quality.

[0068] It should be noted that the voltage value of the constant voltage signal is not limited in the embodiment of the present application, and can be any voltage value. In some specific embodiments, the voltage value of the constant voltage signal received by the touch electrode block 200a in the touch electrode group 200 can be equal to the voltage value of the display signal (negative voltage signal VSS) received by the cathode of the touch panel 20.

[0069] In this way, since the voltage value of the constant voltage signal received by the touch electrode block 200a in the touch electrode group 200 is equal to the voltage value of the display signal received by the cathode of the touch panel 20, that is, the potential of the touch electrode block 200a is equal to that of the cathode, the coupling capacitance between part of the touch electrode group 200 and the cathode of the touch panel 20 can be reduced as much as possible, the touch noise of the touch panel can be reduced, and the touch sensitivity and touch accuracy of the touch panel can be improved.

[0070] Of course, in other specific embodiments, the constant voltage signal may also be a GND signal, that is, the voltage value of the constant voltage signal is 0 V. In other words, in the touch stage, one or more touch electrode groups 200 except the target touch electrode group 200A among the multiple touch electrode groups 200 may be grounded.

[0071] like Figure 3aAs shown, according to some embodiments of the present application, optionally, the touch panel 20 may be a self-capacitive touch panel. Specifically, the touch panel 20 may further include a plurality of touch signal lines L1, and the plurality of touch electrode blocks 200a in the touch panel 20 are insulated from each other, and each touch electrode block 200a is electrically connected to the driver chip 30 via a separate touch signal line L1. The touch signal line L1 is used to send a touch drive signal (such as a first touch drive signal or a second touch drive signal described below) sent by the driver chip 30 to the corresponding touch electrode block 200a, and transmit the touch sensing signal generated by the touch electrode block 200a back to the driver chip 30, thereby realizing touch detection.

[0072] exist Figure 3a In the illustrated embodiment, each touch electrode group 200 in the self-capacitive touch panel may include one touch electrode block 200a, that is, the touch electrode blocks 200a are scanned one by one in sequence. Of course, in other embodiments, each touch electrode group 200 in the self-capacitive touch panel may also include multiple touch electrode blocks 200a, such as two adjacent touch electrode blocks 200a, three adjacent touch electrode blocks 200a, or N adjacent touch electrode blocks 200a, where N is an integer greater than 3.

[0073] like Figure 3b As shown, for example, for a self-capacitive touch panel, a plurality of touch electrode groups 200 in the self-capacitive touch panel may be arranged in sequence along a first direction Y, and each touch electrode group 200 may include a plurality of touch electrode blocks 200a arranged in sequence along a second direction X, and the first direction Y intersects with the second direction X. Among them, the first direction Y may be a row direction or a column direction of the touch panel, and a touch electrode group 200 may be understood as a row of touch electrode blocks 200a or a column of touch electrode blocks 200a. That is, when the touch panel 20 is a self-capacitive touch panel, the touch panel 20 may be scanned in sequence by touch electrode blocks 200a row by row or by touch electrode blocks 200a column by column.

[0074] It should be noted that one of the first direction Y and the second direction X may be a column direction, and the other may be a row direction. For example, when the first direction Y is a column direction, the second direction X may be a row direction. Conversely, when the first direction Y is a row direction, the second direction X may be a column direction. Figure 3b For example, the first direction Y is the column direction and the second direction X is the row direction.

[0075] In this way, for the self-capacitance touch panel, during the touch stage, since some touch electrode groups other than the target touch electrode group in the multiple touch electrode groups receive constant voltage signals, no coupling capacitance will be generated between the touch electrode groups that receive the constant voltage signals and the cathode of the touch panel, thereby reducing the mutual interference between the touch scan and the cathode, reducing the touch noise of the self-capacitance touch panel, and further reducing the influence of the signal disturbance between the touch electrode and the cathode on the transmission of the touch sensing signal, thereby improving the touch sensitivity and touch accuracy of the self-capacitance touch panel.

[0076] like Figure 4 As shown, according to other embodiments of the present application, optionally, the touch panel 20 can also be a mutual capacitance touch panel. Specifically, the multiple touch electrode groups 200 in the touch panel 20 can be arranged in sequence along the first direction Y, and each touch electrode group 200 can include a plurality of touch electrode blocks 200a arranged in sequence along the second direction X, the first direction Y intersects with the second direction X, and the first direction Y can be the row direction or column direction of the touch panel. The touch electrode group 200 can be a touch drive electrode group, and the touch electrode block 200a can be a touch drive electrode block Tx. The multiple touch drive electrode blocks Tx in each touch drive electrode group are arranged in sequence along the second direction X and are electrically connected to each other. In addition, the touch panel 20 can also include a plurality of touch sensing electrode groups 400, and each touch sensing electrode group 400 can include a plurality of touch sensing electrodes Rx arranged in sequence along the first direction Y and electrically connected to each other. The touch driving electrode block Tx and the touch sensing electrodes Rx are insulated from each other, so that mutual capacitance is formed between the touch driving electrode block Tx and the touch sensing electrodes Rx.

[0077] The touch panel 20 may further include a plurality of first touch signal lines L2 and a plurality of second touch signal lines L3. The plurality of touch driving electrode blocks Tx in each touch driving electrode group may be electrically connected to the driving chip 30 through the same first touch signal line L2, and the plurality of touch sensing electrodes Rx in each touch sensing electrode group 400 may be electrically connected to the driving chip 30 through the same second touch signal line L3. The first touch signal line L2 is used to send a touch driving signal (such as a first touch driving signal or a second touch driving signal hereinafter) sent by the driving chip 30 to the touch driving electrode block Tx, and the touch sensing electrode Rx transmits the touch sensing signal generated by the touch sensing electrode Rx back to the driving chip 30 through the second touch signal line L3, thereby realizing touch detection.

[0078] It should be noted that one of the first direction Y and the second direction X may be a column direction, and the other may be a row direction. For example, when the first direction Y is a column direction, the second direction X may be a row direction. Conversely, when the first direction Y is a row direction, the second direction X may be a column direction. Figure 4For example, the first direction Y is the column direction and the second direction X is the row direction. In addition, it should be noted that one touch electrode group 200 can be understood as a row of touch electrode blocks 200a or a column of touch electrode blocks 200a.

[0079] In this way, for the mutual capacitance touch panel, in the touch stage, since some touch electrode groups other than the target touch electrode group in the multiple touch electrode groups receive constant voltage signals, no coupling capacitance will be generated between the touch electrode groups that receive the constant voltage signals and the cathode of the touch panel, thereby reducing the mutual interference between the touch scan and the cathode, reducing the touch noise of the mutual capacitance touch panel, and further reducing the influence of the signal disturbance between the touch electrode and the cathode on the transmission of the touch sensing signal, thereby improving the touch sensitivity and touch accuracy of the mutual capacitance touch panel.

[0080] Figure 5 A scanning schematic diagram of a touch panel provided in an embodiment of the present application. Figure 6 Another scanning schematic diagram of the touch panel provided in the embodiment of the present application. Figure 7 This is another scanning schematic diagram of the touch panel provided in the embodiment of the present application. Figure 8 This is another scanning schematic diagram of the touch panel provided in the embodiment of the present application. Figures 5 to 8 In the figure, the black touch electrode block 200a represents the touch electrode block 200a in the target touch electrode group 200A (or the currently scanned channel), the gray touch electrode block 200a represents the touch electrode block 200a participating in the touch scan (that is, the gray touch electrode block 200a receives the first touch drive signal or the second touch drive signal described below), and the white touch electrode block 200a represents the touch electrode block 200a not participating in the touch scan (that is, the white touch electrode block 200a receives a constant voltage signal).

[0081] Table 1 schematically shows the Figure 5 The sensing capacitance contribution ratios of the target touch electrode group, the touch electrode group adjacent to the target touch electrode group (or adjacent scanned channels), and the touch electrode group next to the target touch electrode group (or next adjacent scanned channels) in the illustrated embodiment, and Figure 8 The inductive capacitance contribution ratio of the target touch electrode group in the embodiment shown is shown in FIG. Figure 5 In the embodiment shown, the target touch electrode group and other touch electrode groups except the target touch electrode group all participate in the scanning; Figure 8 In the illustrated embodiment, only the target touch electrode group participates in the scanning.

[0082] It should be noted that in this application Figure 5 The embodiment shown, Figure 6 The embodiment shown, Figure 7 The embodiment shown and Figure 8 In the embodiment shown, the target touch electrode group may be a touch electrode group 200 in the touch panel 20. For example, the target touch electrode group may be a touch electrode group 200 where the center of the touch area of ​​the current finger is located. Figure 5 The embodiment shown, Figure 6 The embodiment shown, Figure 7 The embodiment shown and Figure 8 In the illustrated embodiment, the touch electrode group adjacent to the target touch electrode group can be understood as the first touch electrode group 200 adjacent to the target touch electrode group on both sides in the first direction Y. The touch electrode group second adjacent to the target touch electrode group can be understood as the second touch electrode group 200 adjacent to the target touch electrode group on both sides in the first direction Y.

[0083] In other words, the application Figure 5 The embodiment shown, Figure 6 The embodiment shown, Figure 7 The embodiment shown and Figure 8 The test data in the illustrated embodiment is, for example, the test data obtained by taking the target touch electrode group as a touch electrode group 200 where the center of the touch area of ​​the current finger is located, the touch electrode group adjacent to the target touch electrode group is the first touch electrode group adjacent to the target touch electrode group on both sides in the first direction Y, and the touch electrode group second adjacent to the target touch electrode group is the second touch electrode group adjacent to the target touch electrode group on both sides in the first direction Y.

[0084] Table 1

[0085]

[0086] Combination Figures 5 to 7As shown in Table 1, the inventor of the present application further studied and found that, taking the touch electrode block in the target touch electrode group where the center of the touch area of ​​the current finger is located, when other touch electrode groups other than the target touch electrode group also participate in touch scanning, assuming that the total ratio of the inductive capacitance generated between the finger and the touch electrode block is 100%, then the target touch electrode group will share about 76% of the inductive capacitance generated between the finger and the touch panel, the touch electrode group adjacent to the target touch electrode group will share about 19% of the inductive capacitance generated between the finger and the touch panel, the touch electrode group next to the target touch electrode group will share about 2% of the inductive capacitance generated between the finger and the touch panel, and the remaining 3% will be shared by other touch electrode groups farther from the target touch electrode group. It can be seen from this that the contribution ratio of the inductive capacitance decreases from the middle target touch electrode group to the outside (76%→19%→2%), and the contribution ratio of the inductive capacitance of other touch electrode groups other than the next adjacent scanned channel can be basically ignored. When only the target touch electrode group and the touch electrode group adjacent to the target touch electrode group (i.e. Figure 7 In the embodiment shown in the figure), the induced capacitance generated between the finger and the touch panel can reach 76%+19%=95%, that is, it reaches the same Figure 5 The embodiment shown has all touch electrode groups scanning (100%) at substantially the same level.

[0087] Recombination Figure 8 As shown in Table 1, the inventor of the present application has further studied and found that, still taking the touch electrode block in the target touch electrode group as an example, when only the target touch electrode group participates in the touch scan and other touch electrode groups except the target touch electrode group do not participate in the touch scan, the target touch electrode group will bear a larger inductive capacitance alone, and the increase in inductive capacitance will reduce the sensitivity of the touch, which is not conducive to improving the touch effect. Among them, the total in Table 1 can be understood as Figure 5 The total amount of sensing capacitance generated between the finger and the touch panel in the illustrated embodiment (ie, all touch electrode groups participate in scanning).

[0088] In view of this, the inventor of the present application considers that during the touch stage, at least one touch electrode group adjacent to the target touch electrode group is also allowed to participate in the touch scan to reduce the burden of the target touch electrode group and improve the touch sensitivity.

[0089] Specifically, if Fig. 9As shown, according to some embodiments of the present application, optionally, in the touch stage, at least one touch electrode group 200 adjacent to the target touch electrode group 200A receives a second touch drive signal. Exemplarily, for example, along the first direction Y, the touch electrode group 200 that is most adjacent to the target touch electrode group 200A in the first direction Y may be referred to as the first touch electrode group 200 adjacent to the target touch electrode group 200A, and the touch electrode group 200 that is secondarily adjacent to the target touch electrode group 200A in the first direction Y may be referred to as the second touch electrode group 200 adjacent to the target touch electrode group 200A, and so on. Fig. 9 In the illustrated embodiment, in the touch stage, the first touch electrode group 200 to the i-th touch electrode group 200 adjacent to the target touch electrode group 200A in the first direction Y may receive the second touch drive signal, where i≥1 and is an integer. Exemplarily, i may be equal to 1, 2, 3 or other values. For example, when i=1, the touch electrode group 200 that is closest to the target touch electrode group 200A in the first direction Y receives the second touch drive signal; when i=2, the touch electrode group 200 that is closest to the target touch electrode group 200A in the first direction Y and the second adjacent touch electrode group 200 both receive the second touch drive signal.

[0090] In this way, in addition to the target touch electrode group 200A, at least one touch electrode group 200 adjacent to the target touch electrode group 200A also participates in the touch scanning, which can reduce the burden of the target touch electrode group 200A, such as reducing the sensing capacitance on the target touch electrode group 200A and improving touch sensitivity.

[0091] It should be noted that, in the embodiment of the present application, the second touch driving signal and the first touch driving signal may have the same period and the same phase, or may have the same period but different phases. In addition, the second touch driving signal and the first touch driving signal may have the same amplitude or different amplitudes, which is not limited in the embodiment of the present application.

[0092] As mentioned above Figures 5 to 7 As can be seen from Table 1, as the number of touch electrode groups participating in touch scanning increases, although the touch sensitivity may increase to a certain extent, it will also increase the coupling capacitance between the touch electrode block and the cathode, and increase the interference between the touch scanning and the cathode. For example, the contribution of the inductive capacitance of the touch electrode group next to the target touch electrode group is relatively small, only about 2%. Therefore, considering the contribution of the inductive capacitance made by the touch electrode group next to the target touch electrode group and its mutual influence with the cathode, the touch electrode group next to the target touch electrode group and other touch electrode groups other than the next adjacent touch electrode group may not participate in the touch scanning.

[0093] Specifically, in some specific embodiments, the touch electrode blocks 200a in the touch electrode group 200 (including the target touch electrode group 200A) are optionally arranged in sequence along the row direction or column direction of the touch panel, that is, arranged in sequence along the above-mentioned second direction X. In the touch stage, only the first side ( Fig. 9 A second side (a side) of a touch electrode group 200 adjacent to the target touch electrode group 200A Fig. 9 The first side and the second side are respectively located on both sides of the setting direction of the touch electrode blocks in the target touch electrode group 200A (i.e., on both sides of the direction perpendicular to the setting direction of the touch electrode blocks in the touch electrode group 200, such as the two sides of the first direction Y mentioned above). That is, only the touch electrode group 200 adjacent to (most adjacent to) the target touch electrode group 200A in the first direction Y can receive the second touch driving signal.

[0094] In this way, the sum of the inductive capacitance contribution ratios of the target touch electrode group and the touch electrode group adjacent to the target touch electrode group can reach about 95%, which can better ensure touch sensitivity. Since only the target touch electrode group and its adjacent touch electrode group participate in touch scanning, other touch electrode groups maintain a constant voltage without generating coupling capacitance with the cathode, so while ensuring good touch sensitivity, the mutual interference between touch scanning and the cathode can be reduced as much as possible, the touch noise of the touch panel can be reduced, and the influence of the signal disturbance between the touch electrode and the cathode on the transmission of the touch sensing signal can be reduced, thereby improving the touch sensitivity and touch accuracy of the touch panel.

[0095] Combination Figure 3b and Fig.10 As shown, according to some embodiments of the present application, optionally, when the touch panel 20 is a self-capacitive touch panel, at least one touch electrode group 200 adjacent to the target touch electrode group 200A can receive a second touch drive signal. For example, at least one touch electrode group 200 adjacent to the target touch electrode group 200A in the first direction Y can receive a second touch drive signal. The touch electrode group 200 may include one touch electrode block 200a or two or more touch electrode blocks 200a (such as a plurality of touch electrode blocks 200a arranged in sequence along the second direction X). The first touch drive signal has the same period as the second touch drive signal, and the phase difference is (T / 2)*p, where T represents the period of the first touch drive signal and the second touch drive signal, and p is an even number. That is, the phase difference between the first touch drive signal and the second touch drive signal is an even multiple of half a period.

[0096] In this way, since the first touch drive signal received by the target touch electrode group and the second touch drive signal received by the touch electrode group adjacent to the target touch electrode group have the same period and the phase difference is an even multiple of half a period, the touch scanning action of the target touch electrode group and the touch electrode group adjacent to the target touch electrode group can be kept consistent, thereby improving the touch sensitivity and the signal-to-noise ratio of the touch sensing signal.

[0097] like Fig.10 As shown, when the target touch electrode group 200A is a plurality of touch electrode groups 200, each touch electrode group 200 adjacent to the target touch electrode group 200A can receive the second touch drive signal. Of course, in addition to the touch electrode group 200 adjacent to the target touch electrode group 200A, other touch electrode groups 200 (such as the touch electrode group 200 adjacent to the target touch electrode group 200A) can also receive the second touch drive signal, but the embodiments of the present application are not limited thereto.

[0098] In some specific embodiments, optionally, when the touch panel 20 is a self-capacitive touch panel, the period of the first touch drive signal and the second touch drive signal may be, for example, 2π. Exemplarily, the first touch drive signal and the second touch drive signal may be square wave pulse signals, sine wave pulse signals, or sawtooth wave pulse signals, but the embodiments of the present application are not limited thereto.

[0099] Combination Figure 4 and Fig.11 As shown, according to some embodiments of the present application, optionally, when the touch panel 20 is a mutual capacitance touch panel, at least one touch electrode group 200 adjacent to the target touch electrode group 200A in the first direction Y can receive a second touch drive signal. The first touch drive signal and the second touch drive signal have the same period and a phase difference of (T / 2)*q, where T represents the period of the first touch drive signal and the second touch drive signal, and q is an odd number. That is, the phase difference between the first touch drive signal and the second touch drive signal is an odd multiple of half a period. In other words, at the same time, the phases of the first touch drive signal and the second touch drive signal can be opposite.

[0100] In this way, since the first touch drive signal received by the target touch electrode group and the second touch drive signal received by the touch electrode group adjacent to the target touch electrode group have the same period and a phase difference of an odd multiple of half a period, the interference effects of the target touch electrode group and the touch electrode group adjacent to the target touch electrode group on the cathode can offset each other, further reducing the mutual interference between the touch scan and the cathode, reducing the touch noise of the self-capacitance touch panel, and improving the touch sensitivity and touch accuracy of the mutual capacitance touch panel.

[0101] In some specific embodiments, optionally, when the touch panel 20 is a mutual capacitance touch panel, the period of the first touch drive signal and the second touch drive signal is 2π. Exemplarily, the first touch drive signal and the second touch drive signal may be square wave pulse signals, sine wave pulse signals or sawtooth wave pulse signals, but the embodiments of the present application are not limited thereto.

[0102] For ease of understanding, the distribution of the touch electrode blocks and the cathode film layers in the touch panel 20 provided in the embodiment of the present application is described below.

[0103] like Fig.12 As shown, according to some embodiments of the present application, optionally, the touch electrode blocks 200a in the plurality of touch electrode groups 200 are located in the touch function layer 04 of the touch panel 20. In addition, the touch panel 20 may further include a substrate 01 and a cathode layer 120. Along the thickness direction Z of the touch panel 20, the cathode layer 120 may be located between the substrate 01 and the touch function layer 04. Fig.13 As shown, the cathode layer 120 may include a plurality of strip-shaped cathode units 120a. In the thickness direction Z of the touch panel 20, the orthographic projection of the touch electrode block 200a on the substrate 01 at least partially overlaps with the orthographic projection of the cathode unit 120a on the substrate 01.

[0104] In this way, since the cathode unit in a strip shape has a greatly reduced facing area between the cathode unit and the touch electrode block compared to the cathode layer set on the entire surface, the coupling capacitance between the touch electrode block and the cathode can be further reduced, and the mutual interference between the touch scanning and the cathode can be further reduced, thereby reducing the touch noise of the self-capacitance touch panel and improving the touch sensitivity and touch accuracy of the mutual capacitance touch panel.

[0105] For ease of understanding, the following Fig.14 and Fig.15 The specific embodiment shown is a detailed description of the film structure of the touch panel 20 .

[0106] like Fig.14 As shown, in some specific embodiments, optionally, the touch panel 20 may include a substrate 01, a display function layer 02, an encapsulation layer 03 and a touch function layer 04 which are stacked. The display function layer 02 may include an anode layer 110, a light emitting layer 111 and a cathode layer 120, and the anode layer 110, the light emitting layer 111 and the cathode layer 120 are arranged in sequence along the direction from the substrate 01 to the touch function layer 04. The touch function layer 04 may include a touch electrode layer 410, an insulating layer 420 and a wiring layer 430. For a self-capacitive touch panel, the touch electrode block 200a may be located in the touch electrode layer 410, and the wiring layer 430 may include a touch signal line L1, and the touch signal line L1 is electrically connected to the touch electrode block 200a through a via on the insulating layer 420.

[0107] It should be noted that, along the thickness direction Z of the touch panel 20, the touch electrode layer 410 may be located between the packaging layer 03 and the wiring layer 430. Alternatively, in other embodiments, the positions of the touch electrode layer 410 and the wiring layer 430 may be reversed, and the wiring layer 430 may also be located between the packaging layer 03 and the touch electrode layer 410, which is not limited in the embodiments of the present application.

[0108] Continue to see Fig.14 In some specific embodiments, optionally, the display function layer 02 may further include a first metal layer M1, a second metal layer M2, and a third metal layer M3 stacked in a direction away from the substrate 01. Of course, in other embodiments, the display function layer 02 may further include a fourth metal layer located on the side of the third metal layer M3 away from the substrate 01, which is not limited in the present embodiment. An active layer b is provided between the first metal layer M1 and the substrate 01. An insulating layer is provided between any adjacent metal layers and between the active layer b and the first metal layer M1. Exemplarily, a gate insulating layer GI is provided between the first metal layer M1 and the active layer b, a capacitor insulating layer IMD is provided between the second metal layer M2 and the first metal layer M1, and an interlayer dielectric layer ILD is provided between the third metal layer M3 and the second metal layer M2. In addition, the display function layer 02 may further include a planarization layer PLN located on the side of the interlayer dielectric layer ILD away from the substrate 01. The display function layer 02 may further include a pixel definition layer PDL located on the side of the planarization layer PLN away from the substrate 01.

[0109] Combination Figure 4 and Fig.15 As shown, in some specific embodiments, optionally, for a mutual capacitance touch panel, the touch driving electrode block Tx and the touch sensing electrode Rx may both be located in the touch electrode layer 410. The first touch signal line L2 and the second touch signal line L3 may be located in the touch electrode layer 410 or in the routing layer 430. In addition, the routing layer 430 may further include a bridge k, and the bridge k connects any two adjacent touch sensing electrodes Rx through vias on the insulating layer 420 to achieve electrical connection between the touch sensing electrodes Rx.

[0110] Based on the touch panel 20 provided in the above embodiment, the present application also provides a specific implementation of the touch panel driving method. Figure 2 As shown, the touch panel 20 includes a plurality of touch electrode groups 200, and each touch electrode group 200 includes at least one touch electrode block 200a. It should be noted that the touch panel in the touch panel driving method has the same structure as the touch panel 20 provided in the above embodiment, and the structure of the touch panel 20 has been described in detail above, which will not be repeated here.

[0111] like Fig.16As shown, the touch panel driving method provided in the embodiment of the present application includes the following steps:

[0112] S101. In a touch stage, a first touch driving signal is provided to a target touch electrode group among multiple touch electrode groups, and a constant voltage signal is provided to one or more touch electrode groups other than the target touch electrode group among the multiple touch electrode groups, wherein the target touch electrode group is at least one touch electrode group.

[0113] The driving method of the touch panel of the embodiment of the present application, the touch panel includes multiple touch electrode groups, each touch electrode group includes at least one touch electrode block; in the touch stage, a first touch driving signal is provided to a target touch electrode group among the multiple touch electrode groups, and a constant voltage signal is provided to one or more touch electrode groups other than the target touch electrode group among the multiple touch electrode groups, and the target touch electrode group is at least one touch electrode group. In the touch stage, since some touch electrode groups other than the target touch electrode group among the multiple touch electrode groups receive constant voltage signals, no coupling capacitance is generated between the part of the touch electrode groups receiving the constant voltage signals and the cathode of the touch panel, thereby reducing the mutual interference between the touch scan and the cathode, reducing the touch noise of the touch panel, and further reducing the influence of the signal disturbance between the touch electrode and the cathode on the transmission of the touch sensing signal, thereby improving the touch sensitivity and touch accuracy of the touch panel. At the same time, it can reduce the disturbance of the touch signal to the cathode and improve the display quality.

[0114] In some embodiments, optionally, Fig.17 As shown, the touch panel driving method provided in the embodiment of the present application further includes the following steps: S102, in the touch stage, providing a second touch driving signal to at least one touch electrode group adjacent to the target touch electrode group.

[0115] In some embodiments, optionally, S102 may specifically include the following steps: in the touch stage, providing a second touch drive signal to a touch electrode group adjacent to a first side of the target touch electrode group and / or a touch electrode group adjacent to a second side of the target touch electrode group, the first side and the second side being respectively located on both sides of the target touch electrode group.

[0116] In some embodiments, optionally, the touch panel further includes a plurality of touch signal lines; different touch electrode blocks are insulated from each other, and each touch electrode block is electrically connected to the driving chip via a separate touch signal line.

[0117] In some embodiments, optionally, a plurality of touch electrode groups are sequentially arranged along a first direction, each touch electrode group includes a plurality of touch electrode blocks sequentially arranged along a second direction, and the first direction intersects the second direction.

[0118] In some embodiments, optionally, when the touch panel is a self-capacitive touch panel, the first touch drive signal and the second touch drive signal have the same period and a phase difference of (T / 2)*p, where T represents the period of the first touch drive signal and the second touch drive signal, and p is an even number.

[0119] In some embodiments, optionally, a period of the first touch driving signal and the second touch driving signal is 2π.

[0120] In some embodiments, optionally, multiple touch electrode groups are arranged in sequence along a first direction, each touch electrode group includes multiple touch electrode blocks arranged in sequence along a second direction, and the first direction intersects the second direction; the touch electrode group is a touch drive electrode group, the touch electrode block is a touch drive electrode block, and the multiple touch drive electrode blocks in the touch drive electrode group are electrically connected to each other; the touch panel also includes multiple touch sensing electrode groups, each touch sensing electrode group includes multiple touch sensing electrodes arranged in sequence along the first direction and electrically connected to each other; the touch drive electrode blocks and the touch sensing electrodes are insulated from each other.

[0121] In some embodiments, optionally, when the touch panel is a mutual capacitance touch panel, the first touch drive signal and the second touch drive signal have the same period and a phase difference of (T / 2)*q, where T represents the period of the first touch drive signal and the second touch drive signal, and q is an odd number.

[0122] In some embodiments, optionally, multiple touch electrode groups are located in the touch function layer of the touch panel, and the touch panel also includes a substrate and a cathode layer, and the cathode layer is located between the substrate and the touch function layer along the thickness direction perpendicular to the touch panel; the cathode layer includes multiple strip-shaped cathode units, and in the thickness direction perpendicular to the touch panel, the orthographic projection of the touch electrode block on the substrate at least partially overlaps with the orthographic projection of the cathode unit on the substrate.

[0123] In some embodiments, optionally, the touch panel includes a stacked substrate, a display function layer, a packaging layer and a touch function layer, the display function layer includes an anode layer, a light-emitting layer and a cathode layer, and the anode layer, the light-emitting layer and the cathode layer are arranged in sequence along the direction of the substrate toward the touch function layer; the touch function layer includes a touch electrode layer, an insulating layer and a wiring layer, the touch electrode block is located in the touch electrode layer, the wiring layer includes a touch signal line, and the touch signal line is electrically connected to the touch electrode block through vias on the insulating layer.

[0124] In some embodiments, optionally, when the touch panel includes a touch sensing electrode group, and the touch sensing electrode group includes a plurality of touch sensing electrodes, the routing layer further includes a bridge, and the bridge connects any two adjacent touch sensing electrodes through vias on the insulating layer.

[0125] Fig.16 and Fig.17 The specific implementation of each step in the method shown has been described in detail when introducing the touch panel 20 in the above product embodiment, and will not be repeated here for the sake of brevity.

[0126] Based on the touch panel 20 provided in the above embodiment, the present application also provides a display device, including the display panel provided in the present application. Fig.18 , Fig.18 It is a structural schematic diagram of a display device provided in an embodiment of the present application. Fig.18 The provided display device 1000 includes the touch panel 20 provided by any of the above embodiments of the present application. Fig.18 In the embodiment, a mobile phone is used as an example to illustrate the display device 1000. It can be understood that the display device provided in the embodiment of the present application can be a wearable product, a computer, a television, a car display device, or other display devices with display functions, and the present application does not make specific restrictions on this. The display device provided in the embodiment of the present application has the beneficial effects of the array substrate provided in the embodiment of the present application. For details, reference can be made to the specific description of the array substrate in the above embodiments, and this embodiment will not be repeated here.

[0127] Based on the touch panel driving method provided in the above embodiment, the present application also provides a specific implementation of the electronic device. Please refer to the following embodiment.

[0128] Fig.19 A schematic diagram of the hardware structure of an electronic device provided in an embodiment of the present application is shown.

[0129] The electronic device may include a processor 1901 and a memory 1902 storing computer program instructions.

[0130] Specifically, the processor 1901 may include a central processing unit (CPU), or an application specific integrated circuit (ASIC), or may be configured to implement one or more integrated circuits of the embodiments of the present application.

[0131] The memory 1902 may include a large capacity memory for data or instructions. By way of example and not limitation, the memory 1902 may include a hard disk drive (HDD), a floppy disk drive, a flash memory, an optical disk, a magneto-optical disk, a magnetic tape, or a universal serial bus (USB) drive or a combination of two or more of these. In one example, the memory 1902 may include a removable or non-removable (or fixed) medium, or the memory 1902 is a non-volatile solid-state memory. The memory 1902 may be inside or outside the integrated gateway disaster recovery device.

[0132] In one example, the memory 1902 may be a read-only memory (ROM). In one example, the ROM may be a mask-programmed ROM, a programmable ROM (PROM), an erasable PROM (EPROM), an electrically erasable PROM (EEPROM), an electrically rewritable ROM (EAROM), or a flash memory, or a combination of two or more of these.

[0133] The memory 1902 may include a read-only memory (ROM), a random access memory (RAM), a magnetic disk storage medium device, an optical storage medium device, a flash memory device, an electrical, optical or other physical / tangible memory storage device. Thus, typically, the memory includes one or more tangible (non-transitory) computer-readable storage media (e.g., a memory device) encoded with software including computer-executable instructions, and when the software is executed (e.g., by one or more processors), it is operable to perform the operations described with reference to the method according to an aspect of the present application.

[0134] The processor 1901 reads and executes the computer program instructions stored in the memory 1902 to implement Fig.16 or Fig.17 The method / step S101 and / or S102 in the embodiment shown in the figure can achieve Fig.16 or Fig.17 The corresponding technical effects achieved by executing the methods / steps in the example shown are not repeated here for the sake of brevity.

[0135] In one example, the electronic device may further include a communication interface 1903 and a bus 1910. Fig.19 As shown, the processor 1901, the memory 1902, and the communication interface 1903 are connected via a bus 1910 and communicate with each other.

[0136] The communication interface 1903 is mainly used to implement communication between various modules, devices, units and / or equipment in the embodiments of the present application.

[0137] Bus 1910 includes hardware, software or both, and the components of electronic equipment are coupled to each other. For example, but not limitation, bus may include accelerated graphics port (Accelerated Graphics Port, AGP) or other graphics bus, enhanced industry standard architecture (Extended Industry Standard Architecture, EISA) bus, front side bus (Front Side Bus, FSB), Hyper Transport (Hyper Transport, HT) interconnection, industry standard architecture (Industry Standard Architecture, ISA) bus, infinite bandwidth interconnection, low pin count (LPC) bus, memory bus, micro channel architecture (MCA) bus, peripheral component interconnection (PCI) bus, PCI-Express (PCI-X) bus, serial advanced technology attachment (SATA) bus, video electronics standard association local (VLB) bus or other suitable bus or two or more of these combinations. In appropriate cases, bus 1910 may include one or more buses. Although the present application embodiment describes and shows a specific bus, the present application considers any suitable bus or interconnection.

[0138] In addition, in combination with the driving method of the touch panel in the above embodiment, the embodiment of the present application may provide a computer-readable storage medium for implementation. The computer-readable storage medium stores computer program instructions; when the computer program instructions are executed by the processor, any one of the driving methods of the touch panel in the above embodiment is implemented. Examples of computer-readable storage media include non-transitory computer-readable storage media, such as electronic circuits, semiconductor memory devices, ROM, random access memory, flash memory, erasable ROM (EROM), floppy disks, CD-ROMs, optical disks, and hard disks.

[0139] It should be clear that the present application is not limited to the specific configuration and processing described above and shown in the figures. For the sake of simplicity, a detailed description of the known method is omitted here. In the above embodiments, several specific steps are described and shown as examples. However, the method process of the present application is not limited to the specific steps described and shown, and those skilled in the art can make various changes, modifications and additions, or change the order between the steps after understanding the spirit of the present application.

[0140] The functional blocks shown in the above-described block diagram can be implemented as hardware, software, firmware or a combination thereof. When implemented in hardware, it can be, for example, an electronic circuit, an application-specific integrated circuit (Application Specific Integrated Circuit, ASIC), appropriate firmware, plug-in, function card, etc. When implemented in software, the elements of the present application are programs or code segments used to perform the required tasks. The program or code segment can be stored in a machine-readable medium, or transmitted on a transmission medium or communication link by a data signal carried in a carrier. "Machine-readable medium" may include any medium capable of storing or transmitting information. Examples of machine-readable media include electronic circuits, semiconductor memory devices, ROM, flash memory, erasable ROM (EROM), floppy disks, CD-ROMs, optical disks, hard disks, optical fiber media, radio frequency (Radio Frequency, RF) links, etc. The code segment can be downloaded via a computer network such as the Internet, an intranet, etc.

[0141] It should also be noted that the exemplary embodiments mentioned in this application describe some methods or systems based on a series of steps or devices. However, this application is not limited to the order of the above steps, that is, the steps can be performed in the order mentioned in the embodiment, or in a different order from the embodiment, or several steps can be performed simultaneously.

[0142] The above reference is according to the method of the embodiment of the present application, the flow chart of the device (system) and the computer program product and / or the block diagram described various aspects of the present application.It should be understood that each square box in the flow chart and / or the block diagram and the combination of each square box in the flow chart and / or the block diagram can be realized by computer program instructions.These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer or other programmable data processing device to produce a machine so that these instructions executed by the processor of the computer or other programmable data processing device enable the realization of the function / action specified in one or more square boxes of the flow chart and / or the block diagram.Such a processor can be but is not limited to a general-purpose processor, a special-purpose processor, a special application processor or a field programmable logic circuit.It can also be understood that each square box in the block diagram and / or the flow chart and the combination of the square boxes in the block diagram and / or the flow chart can also be realized by the dedicated hardware that performs the specified function or action, or can be realized by the combination of dedicated hardware and computer instructions.

[0143] The above is only a specific implementation of the present application. Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working processes of the systems, modules and units described above can refer to the corresponding processes in the aforementioned method embodiments, and will not be repeated here. It should be understood that the protection scope of the present application is not limited to this. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed in this application, and these modifications or replacements should be included in the protection scope of this application.

Claims

1. A touch panel, characterized in that: The touch panel includes a plurality of touch electrode groups, each of which includes at least one touch electrode block; In the touch stage, a target touch electrode group among the plurality of touch electrode groups receives a first touch drive signal, and one or more touch electrode groups among the plurality of touch electrode groups that do not participate in touch scanning receive a constant voltage signal, and the target touch electrode group is at least one touch electrode group; The touch panel is a touch display panel, and during the touch stage, the touch display panel displays; The touch panel includes a stacked substrate, a display function layer, a packaging layer and a touch function layer, the display function layer includes an anode layer, a light-emitting layer and a cathode layer, and the anode layer, the light-emitting layer and the cathode layer are arranged in sequence along the direction from the substrate to the touch function layer.

2. The touch panel according to claim 1, characterized in that: In the touch control stage, at least one of the touch electrode groups adjacent to the target touch electrode group receives a second touch control driving signal.

3. The touch panel according to claim 2, characterized in that: The touch electrode blocks in the touch electrode group are arranged in sequence along the row direction or column direction of the touch panel. In the touch stage, a touch electrode group adjacent to the first side of the target touch electrode group and / or a touch electrode group adjacent to the second side of the target touch electrode group receives the second touch drive signal, and the first side and the second side are respectively located on both sides of the setting direction of the touch electrode blocks in the target touch electrode group.

4. The touch panel according to any one of claims 1 to 3, characterized in that: The touch panel also includes a plurality of touch signal lines; Different touch electrode blocks are insulated from each other, and each touch electrode block is electrically connected to the driving chip via a separate touch signal line.

5. The touch panel according to claim 4, characterized in that: The plurality of touch electrode groups are sequentially arranged along a first direction, and each of the touch electrode groups includes a plurality of touch electrode blocks sequentially arranged along a second direction. The first direction intersects with the second direction, and the first direction is a row direction or a column direction of the touch panel.

6. The touch panel according to claim 4, characterized in that: When at least one of the touch electrode groups adjacent to the target touch electrode group receives the second touch drive signal, The first touch driving signal and the second touch driving signal have the same period, and a phase difference of (T / 2)*p, where T represents the period of the first touch driving signal and the second touch driving signal, and p is an even number.

7. The touch panel according to claim 6, characterized in that: The period of the first touch driving signal and the second touch driving signal is 2π.

8. The touch panel according to any one of claims 1 to 3, characterized in that: The plurality of touch electrode groups are sequentially arranged along a first direction, and each of the touch electrode groups includes a plurality of touch electrode blocks sequentially arranged along a second direction, the first direction intersects with the second direction, and the first direction is a row direction or a column direction of the touch panel; The touch electrode group is a touch driving electrode group, the touch electrode block is a touch driving electrode block, and a plurality of the touch driving electrode blocks in the touch driving electrode group are electrically connected to each other; The touch panel further includes a plurality of touch sensing electrode groups, each of which includes a plurality of touch sensing electrodes arranged in sequence along the first direction and electrically connected to each other; the touch driving electrode blocks are insulated from the touch sensing electrodes.

9. The touch panel according to claim 8, characterized in that: When at least one of the touch electrode groups adjacent to the target touch electrode group in the first direction receives a second touch driving signal, The first touch driving signal and the second touch driving signal have the same period, and a phase difference of (T / 2)*q, where T represents the period of the first touch driving signal and the second touch driving signal, and q is an odd number.

10. The touch panel according to claim 9, characterized in that: The period of the first touch driving signal and the second touch driving signal is 2π.

11. The touch panel according to claim 1, characterized in that: The plurality of touch electrode groups are located in a touch function layer of the touch panel, the touch panel further comprising a substrate and a cathode layer, and along a thickness direction of the touch panel, the cathode layer is located between the substrate and the touch function layer; The cathode layer includes a plurality of strip-shaped cathode units. In the thickness direction of the touch panel, the orthographic projection of the touch electrode block on the substrate at least partially overlaps with the orthographic projection of the cathode unit on the substrate.

12. The touch panel according to claim 1, characterized in that: The touch function layer includes a touch electrode layer, an insulating layer and a wiring layer. The touch electrode block is located in the touch electrode layer. The wiring layer includes a touch signal line. The touch signal line is electrically connected to the touch electrode block through a via hole on the insulating layer.

13. The touch panel according to claim 12, characterized in that: In the case where the touch panel includes a touch sensing electrode group, and the touch sensing electrode group includes a plurality of touch sensing electrodes, the routing layer further includes a bridge, and the bridge connects any two adjacent touch sensing electrodes through via holes on the insulating layer.

14. A method for driving a touch panel, characterized in that: The touch panel comprises a plurality of touch electrode groups, each of which comprises at least one touch electrode block; the touch panel comprises a substrate, a display function layer, a packaging layer and a touch function layer which are stacked, the display function layer comprises an anode layer, a light emitting layer and a cathode layer, and the anode layer, the light emitting layer and the cathode layer are arranged in sequence along the direction from the substrate to the touch function layer; The method comprises: In the touch control stage, a first touch control driving signal is provided to a target touch control electrode group among the plurality of touch control electrode groups, and a constant voltage signal is provided to one or more touch control electrode groups not participating in touch control scanning among the plurality of touch control electrode groups, wherein the target touch control electrode group is at least one touch control electrode group; The touch panel is a touch display panel, and in the touch stage, the touch display panel displays.

15. A display device, characterized in that: The invention comprises a touch panel as claimed in any one of claims 1 to 13.

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