Touch Panel and Electronic Device

By setting up an electrostatic loss piece in the touch panel that cooperates with the non-touch trace, static electricity on the non-touch trace is consumed, and the damage problem of electrostatic release to the touch electrode is solved, and the electrostatic release protection capability and the stability of the touch function are improved.

CN117075755BActive Publication Date: 2025-07-18SUZHOU GUOXIAN INNOVATION TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202311110888.X
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-08-31
Publication Date
2025-07-18
Estimated Expiration
2043-08-31

AI Technical Summary

Technical Problem

The touch function of electronic devices is susceptible to static electricity release, resulting in damage to the touch electrode, which in turn leads to failure of the touch function.

Method used

In the touch panel, an electrode block is provided on the target touch electrode unit close to the touch trace area, and an electrostatic loss member is formed through the cooperation of the electrode block and the non-touch trace, consuming static electricity on the non-touch trace to prevent the static electricity from jumping to the touch electrode.

Benefits of technology

It improves the electrostatic release protection capability of the touch panel and the stability of the touch control function, prevents the touch electrode from breaking, and ensures the normal operation of the touch control function.

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Abstract

The touch panel and electronic device provided by the embodiments of the present application relate to the field of touch technologies. In the touch panel, an electrode block is disposed on a target touch electrode unit near a touch trace area, and an electrostatic loss component can be formed by the cooperation of the electrode block and a non-touch trace. The electrostatic loss component consumes static electricity, which can prevent static electricity from jumping from the non-touch trace to the touch electrode, resulting in the electrode unit connection part with a small size on the touch electrode being damaged and broken by static electricity, affecting the touch function of the touch panel. In this way, the electrostatic discharge protection ability of the touch panel and the stability of the touch function can be improved.
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Description

Technical Field

[0001] The present application relates to the field of touch technology, and more particularly, to a touch panel and an electronic device. Background Art

[0002] At present, the display screens of electronic devices generally have touch functions and are generally implemented by capacitive touch technology. Capacitive touch technology refers to a technology that uses a finger approaching a touch panel to cause a capacitance change, and then obtains touch coordinates through the capacitance change to implement touch operations. During the use of an electronic device, the touch function of the electronic device has been troubled by Electro-Static Discharge (ESD), resulting in problems with poor touch of the electronic device. Therefore, it is particularly important to protect against ESD. The requirements for protecting against ESD are also getting higher and higher. During the ESD test, when using air-type ESD testing, the static voltage needs to reach more than ±20KV. The electronic device is placed face down and discharged from the side of the electronic device or through the gaps of the whole machine. About ±20KV static electricity will directly jump to the touch electrode through the grounding trace (GND trace), causing damage to the touch pattern and thus resulting in the failure of the touch function. Summary of the Invention

[0003] In order to overcome the technical problems mentioned in the above technical background, embodiments of the present application provide a touch panel and an electronic device.

[0004] In a first aspect of the present application, a touch panel is provided. The touch panel includes a touch electrode area where touch electrodes are distributed, and a touch trace area surrounding the touch electrode area;

[0005] The touch electrode includes a touch electrode unit and an electrode unit connection part connecting adjacent touch electrode units. Among them, the size of the electrode unit connection part is smaller than the size of the touch electrode unit;

[0006] The touch panel further includes a touch trace connected to the touch electrode and a non-touch trace insulated from the touch electrode;

[0007] The touch electrode includes a target touch electrode unit close to the touch trace area. An electrode block is provided on the side of the target touch electrode unit facing the touch trace area. The electrode block and the non-touch trace cooperate to form an electrostatic loss component.

[0008] In a possible embodiment of the present application, the touch panel further includes a touch substrate. The touch electrode, the touch trace, and the non-touch trace are located on the touch substrate. The non-touch trace includes a first non-touch trace;

[0009] The orthographic projection of the electrode block on the touch substrate and the orthographic projection of the first non-touch trace on the touch substrate at least partially overlap;

[0010] The electrostatic loss component includes a virtual bridge formed by the electrode block and the first non-touch trace at the overlapping position of the orthographic projections.

[0011] In a possible embodiment of the present application, in a direction perpendicular to the extension direction of the touch electrode, the size of the electrode block is smaller than the size of the first electrode unit connection portion connecting the target touch electrode unit;

[0012] In the extension direction of the touch electrode, the size of the first non-touch trace is larger than the size of the second electrode unit connection portion that forms a bridge with the first electrode unit connection portion.

[0013] In a possible embodiment of the present application, the extension direction of the first non-touch trace is perpendicular to the extension direction of the touch electrode where the target touch electrode unit is located;

[0014] In the extension direction of the touch electrode where the target touch electrode unit is located, the orthographic projection of the electrode block on the touch substrate protrudes away from the touch electrode region relative to the orthographic projection of the first non-touch trace on the touch substrate, and the distance between the side of the orthographic projection of the electrode block on the touch substrate away from the touch electrode region and the orthographic projection of the first non-touch trace on the touch substrate is greater than or equal to 1 μm.

[0015] In a possible embodiment of the present application, the non-touch trace includes a second non-touch trace;

[0016] The orthographic projection of the electrode block on the touch substrate and the orthographic projection of the second non-touch trace on the touch substrate do not overlap;

[0017] The electrode block is provided with at least one first tip facing the second non-touch trace, and / or the second non-touch trace is provided with at least one second tip facing the electrode block;

[0018] The electrostatic loss component includes an electrostatic discharge end formed by the first tip on the electrode block and / or the second tip on the second non-touch trace.

[0019] In a possible embodiment of the present application, when the electrostatic loss component includes an electrostatic discharge end formed by the first tip on the electrode block and the second tip on the second non-touch trace, the first tip on the electrode block and the second tip on the second non-touch trace are oppositely arranged.

[0020] In a possible embodiment of the present application, the distance between the orthographic projections of the second tip on the touch substrate is greater than or equal to 3 um.

[0021] In a possible embodiment of the present application, at least one of the electrode blocks is provided in the target touch electrode unit;

[0022] For one target touch electrode unit, at least one of the electrode blocks forms at least one virtual bridge with the first non-touch trace, and / or at least one of the electrode blocks forms at least one electrostatic discharge end with the second non-touch trace;

[0023] Preferably, when a plurality of the electrode blocks are provided in the target touch electrode unit, the plurality of the electrode blocks are arranged at equal intervals.

[0024] In a possible embodiment of the present application, the touch electrode includes a plurality of first touch electrodes and a plurality of second touch electrodes;

[0025] The plurality of first touch electrodes are distributed parallel to each other along a first direction, and the plurality of second touch electrodes are distributed parallel to each other along a second direction, wherein the first direction intersects the second direction;

[0026] The first touch electrode includes a first touch electrode unit and a first electrode unit connection portion connecting adjacent first touch electrode units, and the second touch electrode includes a second touch electrode unit and a second electrode unit connection portion connecting adjacent second touch electrode units;

[0027] The first touch electrode unit, the second touch electrode unit, and the first electrode unit connection portion are made of the same metal layer, the second electrode unit connection portion is made of a second metal layer different from the second touch electrode unit, and adjacent second touch electrode units in the second touch electrode are bridged by the second electrode unit connection portion;

[0028] The target touch electrode unit is the first touch electrode unit in the first touch electrode close to the touch trace area;

[0029] Preferably, the non-touch trace includes a ground signal trace and a non-functional signal trace.

[0030] In a second aspect of the present application, an electronic device is provided, and the electronic device includes the touch panel of the first aspect.

[0031] The touch panel and the electronic device provided by the embodiments of the present application. In the touch panel, an electrode block is arranged on a target touch electrode unit close to the touch trace area, and an electrostatic loss component can be formed by the cooperation of the electrode block and the non-touch trace. The electrostatic loss component consumes the static electricity on the non-touch trace, preventing the static electricity from jumping from the non-touch trace to the touch electrode and causing the small-sized electrode unit connection part on the touch electrode to be broken down by static electricity, which affects the touch function of the touch panel. In this way, the electrostatic discharge protection ability and the stability of the touch function of the touch panel can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present application and should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0033] Figure 1 Schematically shows a regional distribution diagram of the touch panel provided by this embodiment;

[0034] Figure 2 Schematically shows a positional relationship diagram of the touch electrode and the non-touch trace provided by the first implementation manner of this embodiment;

[0035] Figure 3 Schematically shows Figure 2 a schematic diagram of the film layer structure;

[0036] Figure 4 Schematically shows Figure 2 a partial enlarged schematic diagram of the dashed area in;

[0037] Figure 5 Schematically shows a positional relationship diagram of the touch electrode and the non-touch trace provided by the second implementation manner of this embodiment;

[0038] Figure 6 Schematically shows another positional relationship diagram of the touch electrode and the non-touch trace provided by the second implementation manner of this embodiment;

[0039] Figure 7 Schematically shows Figure 5 or Figure 6 a schematic diagram of the film layer structure;

[0040] Figure 8 Schematically shows a positional relationship diagram of the touch electrode and the non-touch trace provided by the third implementation manner of this embodiment;

[0041] Figure 9 Schematically shows Figure 8 a schematic diagram of the film layer structure;

[0042] Figure 10 It exemplifies a possible structural schematic diagram of the touch panel provided in this embodiment.

[0043] Icons: 10 - touch panel; 10A - touch electrode area; 10B - touch trace area; 11 - touch substrate; 12 - electrostatic loss component; 13 - insulating layer; 110 - touch electrode; 111 - first touch electrode; 112 - second touch electrode; 1101 - touch electrode unit; 1101A - target touch electrode unit; 11011 - first touch electrode unit; 11012 - second touch electrode unit; 1102 - electrode unit connection part; 11021 - first electrode unit connection part; 11022 - second electrode unit connection part; 1103 - electrode block; 11031 - first tip; 120 - touch trace; 130 - non - touch trace; 1301 - first non - touch trace; 1302 - second non - touch trace; 13021 - second tip. Detailed implementation manners

[0044] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Apparently, the described embodiments are some but not all of the embodiments of the present application. Usually, the components of the embodiments of the present application described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0045] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application claimed, but merely represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts fall within the scope of protection of the present application.

[0046] It should be noted that: Similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0047] In the description of the present application, it should be noted that the orientation or positional relationship indicated by terms such as "upper", "lower", etc. is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of this application is usually placed when in use. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation of the present application. In addition, terms such as "first", "second", etc. are only used for descriptive distinction and cannot be understood as indicating or implying relative importance.

[0048] It should be noted that, without conflict, different features in the embodiments of the present application can be combined with each other.

[0049] The inventor found that the probability of the touch pattern at the end of the touch electrode being damaged by electrostatic shock is extremely high. When the inventor traced the reasons for the above phenomenon, it was found that the existing method of performing electrostatic discharge tests is generally to hold the electronic product by hand or place the electronic product face down for testing. At this time, static electricity will be transmitted to non-touch traces (such as GND traces and Dummy traces) through positions such as the metal structural parts of the electronic device (for example, the metal frame), the gaps of the whole machine or the gaps of the module. The static electricity will jump from the non-touch traces to the touch electrode. Since the sizes at different positions on the touch electrode are different, when the static electricity is transmitted on the touch electrode, it will break down the position with a smaller size at the end of the touch electrode, resulting in the breakage of the touch electrode and the inability to transmit signals with the touch electrode trace, ultimately leading to poor touch.

[0050] To solve the above-mentioned problems, the inventor has innovatively designed the following technical solutions. The specific implementation solutions of the present application will be described in detail below with reference to the accompanying drawings. It should be noted that the defects existing in the above-mentioned prior art solutions are all the results obtained by the inventor after practice and careful research. Therefore, the discovery process of the above technical problems and the solutions proposed by the present embodiment for the above problems should all be the contributions made by the inventor to the present application during the invention creation process, and should not be understood as the technical content known to those skilled in the art.

[0051] Please refer to Figure 1 、 Figure 2 and Figure 3 , Figure 1 which illustrates a possible structural schematic diagram of the touch panel provided in this embodiment. Figure 2 illustrates Figure 1 the positional relationship diagram of the touch electrode and the non-touch trace in Figure 3 illustrates Figure 3 the schematic diagram of the film layer structure of . In this embodiment, the touch panel 10 has a touch electrode area 10A and a touch trace area 10B surrounding the touch electrode area 10A. In the touch electrode area 10A, the touch panel 10 includes a touch pattern formed by touch electrodes 110, wherein the touch pattern can be formed by the cross arrangement of touch electrodes 110 with different extension directions. The touch electrode 110 includes a touch electrode unit 1101 and an electrode unit connection part 1102. In one touch electrode 110, the number of touch electrode units 1101 is multiple, and adjacent touch electrode units 1101 are connected by the electrode unit connection part 1102.

[0052] In the touch wiring area 10B, the touch panel 10 includes touch wirings 120 connected to the touch electrodes 110 and non-touch wirings 130 insulated from the touch electrodes 110.

[0053] In the target touch electrode unit 1101A of the touch electrodes 110 close to the touch wiring area 10B, an electrode block 1103 is provided. The electrode block 1103 is disposed on the side of the target touch electrode unit 1101A facing the touch wiring area 10B. The electrode block 1103 and the non-touch wiring 130 cooperate to form an electrostatic loss member 12 for consuming static electricity on the non-touch wiring 130.

[0054] In the above structure, the electrode block 1103 is provided on the target touch electrode unit 1101A close to the touch wiring area 10B, and the electrostatic loss member 12 for consuming static electricity on the non-touch wiring 130 can be formed by the cooperation of the electrode block 1103 and the non-touch wiring 130. By consuming the static electricity on the non-touch wiring 130 through the electrostatic loss member 12, it is possible to prevent the static electricity from jumping from the non-touch wiring 130 to the touch electrode 110, resulting in the electrostatic breakdown and fracture of the electrode unit connection part 1102 with a smaller size on the touch electrode 110, which affects the touch function of the touch panel 10. In this way, the electrostatic discharge protection ability of the touch panel 10 and the stability of the touch function can be improved.

[0055] In this embodiment, the touch panel 10 further includes a touch substrate 11, and the touch electrodes 110, the touch wirings 120 and the non-touch wirings 130 are located on the touch substrate 11. The touch electrodes 110 can be divided into driving touch electrodes and sensing touch electrodes. The touch wirings 120 can include driving electrode wirings connected to the driving touch electrodes and sensing electrode wirings connected to the sensing touch electrodes. In addition, in this embodiment, the touch panel 10 further includes an insulating layer 13, and the insulating layer 13 at least isolates the non-touch wiring 130 from the touch electrodes 110 to make the non-touch wiring 130 and the touch electrodes 110 insulated from each other.

[0056] In the first implementation manner of this embodiment, please refer to again Figure 2 and Figure 3, the non-touch trace 130 may include a first non-touch trace 1301, and the orthographic projection of the electrode block 1103 on the touch substrate 11 and the orthographic projection of the first non-touch trace 1301 on the touch substrate 11 at least partially overlap. The electrostatic loss component 12 includes a virtual bridge formed by the electrode block 1103 and the first non-touch trace 1301 at the overlapping orthographic projection. During the electrostatic discharge test, the static electricity transmitted in the first non-touch trace 1301 can be consumed by breaking down the electrode block 1103 at the position of the virtual bridge formed by the first non-touch trace 1301 and the electrode block 1103, so as to achieve the purpose of protecting the electrode unit connection portion 1102 at one end of the touch electrode 110 close to the touch trace area 10B.

[0057] Further, in this embodiment, in the direction perpendicular to the extension direction of the touch electrode 110, the size of the electrode block 1103 is smaller than the size of the first electrode unit connection portion 11021 connecting the target touch electrode unit 1101A. In the extension direction of the touch electrode, the size of the first non-touch trace 1301 is larger than the size of the second electrode unit connection portion 11022 that forms a bridge with the first electrode unit connection portion 11021. With such a design, it can be ensured that the first non-touch trace 1301 and the electrode block 1103 have a large overlapping area, and the electrode block 1103 can be more easily broken down by static electricity relative to the electrode unit connection portion 1102, so as to consume the static electricity by sacrificing the electrode block 1103, thereby achieving the purpose of protecting the electrode unit connection portion 1102.

[0058] In this embodiment, the extension direction of the first non-touch trace 1301 is perpendicular to the extension direction of the touch electrode 110 where the target touch electrode unit 1101A is located. In the extension direction of the touch electrode 110 where the target touch electrode unit 1101A is located, the orthographic projection of the electrode block 1103 on the touch substrate 11 protrudes away from the touch electrode area 10A relative to the orthographic projection of the first non-touch trace 1301 on the touch substrate 11. Please refer to Figure 4 , the distance d1 between the side of the orthographic projection of the electrode block 1103 on the touch substrate 11 away from the touch electrode area 10A and the orthographic projection of the first non-touch trace 1301 on the touch substrate 11 is greater than or equal to 1um. With such a design, the electrode block 1103 and the first non-touch trace 1301 can form a virtual bridge, so as to consume the static electricity on the non-touch trace 130 through this virtual bridge as the electrostatic loss component 12 and protect the electrode unit connection portion 1102.

[0059] In the second embodiment of this example, please refer to Figure 5 , Figure 6 and Figure 7, the non-touch trace 130 may further include a second non-touch trace 1302. The orthographic projection of the electrode block 1103 on the touch substrate 11 and the orthographic projection of the second non-touch trace 1302 on the touch substrate 11 do not overlap. The electrode block 1103 is provided with at least one first tip 11031 facing the second non-touch trace 1302, and / or the second non-touch trace 1302 is provided with at least one second tip 13021 facing the electrode block 1103. The static electricity loss component 12 includes a static electricity release end formed by the first tip 11031 on the electrode block 1103 and / or the second tip 13021 on the second non-touch trace 1302. During the static electricity release test, the static electricity transmitted in the second non-touch trace 1302 can be subjected to tip discharge through the first tip 11031 and / or the second tip 13021 to consume the static electricity in the second non-touch trace 1302 and protect the electrode unit connection portion 1102.

[0060] In the present embodiment, in order to improve the static electricity loss ability of the static electricity loss component 12, the static electricity loss component 12 may be a static electricity release end formed by the first tip 11031 on the electrode block 1103 and the second tip 13021 on the second non-touch trace 1302. In this case, the first tip 11031 on the electrode block 1103 and the second tip 13021 on the second non-touch trace 1302 are disposed opposite to each other.

[0061] In order to avoid short-circuiting between the first tip 11031 on the electrode block 1103 and the second tip 13021 on the second non-touch trace 1302, in the present embodiment, the distance d2 between the orthographic projection of the first tip 11031 on the electrode block 1103 on the touch substrate 11 and the orthographic projection of the second tip 13021 on the second non-touch trace 1302 on the touch substrate 11 may be set to be greater than or equal to 3 um.

[0062] In the third implementation manner of the present embodiment, the static electricity loss component 12 may include both the virtual bridge in the first implementation manner and the static electricity release end in the second implementation manner. Exemplarily, as Figure 8 and Figure 9 shown, an electrode block 1103 may form a virtual bridge with the first non-touch trace 1301 and may form a static electricity release end with the second non-touch trace 1302.

[0063] In the present embodiment, at least one electrode block 1103 may be provided on one target touch electrode unit 1101A. According to the above three different implementation manners, the static electricity loss component 12 may include at least one virtual bridge formed by at least one electrode block 1103 and the first non-touch trace 1301, and / or at least one static electricity release end formed by at least one electrode block 1103 and the second non-touch trace 1302.

[0064] Preferably, a plurality of electrode blocks 1103 are provided in a target touch electrode unit 1101A, which can form a plurality of virtual bridges and / or a plurality of static electricity release ends, so as to improve the static electricity loss ability of the static electricity loss component 12 and improve the protection ability for the electrode unit connection part 1102. When a plurality of electrode blocks 1103 are provided in a target touch electrode unit 1101A, the plurality of electrode blocks 1103 can be arranged at equal intervals.

[0065] Further, in this embodiment, please refer to Figure 10 , the touch electrode 110 may include a plurality of first touch electrodes 111 and a plurality of second touch electrodes 112. The first touch electrodes 111 may be driving touch electrodes, and the second touch electrodes 112 may be sensing touch electrodes; or, the first touch electrodes 111 may be sensing touch electrodes, and the second touch electrodes may be driving touch electrodes. The plurality of first touch electrodes 111 and the plurality of second touch electrodes 112 form a touch pattern.

[0066] The plurality of first touch electrodes 111 are distributed parallel to each other along a first direction (the X direction in the figure), and the plurality of second touch electrodes 112 are distributed parallel to each other along a second direction (the Y direction in the figure), wherein the first direction intersects with the second direction.

[0067] In this embodiment, the first touch electrode 111 includes a first touch electrode unit 11011 and a first electrode unit connection part 11021 connecting adjacent first touch electrode units 11011. The second touch electrode 112 includes a second touch electrode unit 11012 and a second electrode unit connection part 11022 connecting adjacent second touch electrode units 11012. The first touch electrode unit 11011, the second touch electrode unit 11012 and the first electrode unit connection part 11021 are made of the same metal layer, and the second electrode unit connection part 11022 is made of a second metal layer different from the second touch electrode unit 11012. The adjacent second touch electrode units 11012 in the second touch electrode 112 are bridged through the second electrode unit connection part 11022, and the first electrode unit connection part 11021 and the second electrode unit connection part 11022 can be isolated by an insulating layer, and the insulating layer can be a silicon oxide insulating layer or an organic insulating layer.

[0068] The inventor found that in the above touch pattern, during the electrostatic discharge test, the first electrode unit connection part 11021 near the touch trace area in the first touch electrode 111 is easily damaged. The reason is that the width of the first electrode unit connection part 11021 is relatively thin, while the thickness of the second electrode unit connection part 11022 is relatively thick and the resistance is smaller. At the bridging position formed by the first electrode unit connection part 11021 and the second electrode unit connection part 11022, the first electrode unit connection part 11021 is more likely to be electrostatically broken down than the second electrode unit connection part 11022, resulting in the fracture of the first electrode unit connection part 11021.

[0069] To solve the above technical problem, the first touch electrode unit 11011 near the touch trace area in the first touch electrode 111 can be used as the target touch electrode unit, and an electrode block 1103 is arranged thereon.

[0070] In this embodiment, the non-touch traces 130 include a ground signal trace (GND trace) and a non-functional signal trace (Dummy trace). Among them, the first non-touch trace 1301 can be a ground signal trace or a non-functional signal trace, and the second non-touch trace 1302 can be a non-functional signal trace or a ground signal trace.

[0071] In this embodiment, the non-touch traces 130 and the touch traces 120 can be made of the same conductive layer. Exemplarily, they can be made of metal, indium tin oxide (ITO), etc. The electrode block 1103 and the target touch electrode unit can be made of the same conductive layer.

[0072] The embodiment of the present application also provides an electronic device, which may include the touch panel described in the previous embodiments. Using the touch panel described above can ensure that the electronic device has strong anti-electrostatic discharge ability and good touch function, improve the user experience, and increase the market competitiveness of the product.

[0073] For the touch panel and the electronic device provided by the embodiment of the present application, in the touch panel, an electrode block is arranged on the target touch electrode unit near the touch trace area, and an electrostatic loss component can be formed through the cooperation of the electrode block and the non-touch trace. The electrostatic on the non-touch trace can be consumed by the electrostatic loss component, preventing the electrostatic from jumping from the non-touch trace to the touch electrode, resulting in the electrostatic injury and fracture of the relatively small electrode unit connection part on the touch electrode, which affects the touch function of the touch panel. In this way, the electrostatic discharge protection ability and the stability of the touch function of the touch panel can be improved.

[0074] The above are only the preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the protection scope of the present application.

Claims

1. A touch panel, characterized in that, The touch panel includes a touch electrode area where touch electrodes are distributed, and a touch trace area surrounding the touch electrode area; The touch electrode includes a touch electrode unit and an electrode unit connection part connecting adjacent touch electrode units, wherein the size of the electrode unit connection part is smaller than that of the touch electrode unit; The touch panel further includes a touch trace connected to one end of the touch electrode and a non-touch trace insulated from the other end of the touch electrode; The touch electrode includes a target touch electrode unit near the touch trace area, and an electrode block is arranged on one side of the target touch electrode unit facing the touch trace area, and the electrode block and the non-touch trace cooperate to form an electrostatic loss component; In a direction perpendicular to the extension direction of the touch electrode, the size of the electrode block is smaller than that of the first electrode unit connection part connecting the target touch electrode unit; The non-touch trace includes a first non-touch trace, and in the extension direction of the touch electrode, the size of the first non-touch trace is larger than that of the second electrode unit connection part forming a bridge with the first electrode unit connection part; The touch panel further includes a touch substrate, the touch electrode, the touch trace and the non-touch trace are located on the touch substrate, and in the extension direction of the touch electrode where the target touch electrode unit is located, the orthographic projection of the electrode block on the touch substrate protrudes in a direction away from the touch electrode area relative to the orthographic projection of the first non-touch trace on the touch substrate; The non-touch trace includes a second non-touch trace; The orthographic projection of the electrode block on the touch substrate and the orthographic projection of the second non-touch trace on the touch substrate do not overlap; At least one first tip facing the second non-touch trace is arranged on the electrode block, and / or at least one second tip facing the electrode block is arranged on the second non-touch trace; The electrostatic loss component includes an electrostatic discharge end formed by the first tip on the electrode block and / or the second tip on the second non-touch trace.

2. The touch panel according to claim 1, wherein The electrostatic loss component includes a virtual bridge formed by the electrode block and the first non-touch trace at the orthographic projection overlapping position.

3. The touch panel according to claim 1, wherein The extension direction of the first non-touch trace is perpendicular to the extension direction of the touch electrode where the target touch electrode unit is located; The distance between the side of the orthographic projection of the electrode block on the touch substrate away from the touch electrode area and the orthographic projection of the first non-touch trace on the touch substrate is greater than or equal to 1um.

4. The touch panel according to claim 1, wherein When the electrostatic loss component includes an electrostatic discharge end formed by the first tip on the electrode block and the second tip on the second non-touch trace, the first tip on the electrode block and the second tip on the second non-touch trace are arranged opposite to each other.

5. The touch panel according to claim 4, wherein The distance between the orthographic projection of the second tip on the touch substrate and the orthographic projection of the second tip on the touch substrate is greater than or equal to 3um.

6. The touch panel according to claim 4, wherein, The target touch electrode unit is provided with at least one of the electrode blocks; For one of the target touch electrode units, at least one of the electrode blocks forms at least one virtual bridge with the first non-touch trace, and / or at least one of the electrode blocks forms at least one electrostatic discharge end with the second non-touch trace.

7. The touch panel according to claim 6, wherein When the target touch electrode unit is provided with a plurality of the electrode blocks, the plurality of the electrode blocks are arranged at equal intervals.

8. The touch panel according to claim 1, characterized in that, The touch electrodes include a plurality of first touch electrodes and a plurality of second touch electrodes; The plurality of first touch electrodes are distributed parallel to each other along a first direction, and the plurality of second touch electrodes are distributed parallel to each other along a second direction, wherein the first direction intersects the second direction; The first touch electrode includes a first touch electrode unit and a first electrode unit connection portion connecting adjacent first touch electrode units, and the second touch electrode includes a second touch electrode unit and a second electrode unit connection portion connecting adjacent second touch electrode units; The first touch electrode unit, the second touch electrode unit and the first electrode unit connection portion are made of the same metal layer, the second electrode unit connection portion is made of a second metal layer different from the second touch electrode unit, and adjacent second touch electrode units in the second touch electrode are bridged through the second electrode unit connection portion; The target touch electrode unit is the first touch electrode unit in the first touch electrode close to the touch trace area.

9. The touch panel according to claim 8, wherein The non-touch traces include a ground signal trace and a non-functional signal trace.

10. An electronic device, characterized in that, The electronic device includes the touch panel according to any one of claims 1-9.

Citation Information

Patent Citations

  • Touch panel and touch display device

    CN115826797A

  • Touch front cover

    CN203552224U