Display panel and display device

Abstract

The invention relates to a display panel and a display device. The display panel comprises a touch electrode and a touch wire, the touch wires are electrically connected with the corresponding touch electrodes; a first signal line; the first signal lines and the touch electrodes and / or the touch wires are located on the same layer; the at least one electrostatic protection structure comprises at least one first part and at least one second part, and the first part is electrically connected with the first signal line; and the second part and the first part are arranged in different layers in an insulating manner and are at least partially overlapped. The first signal lines can be prevented from accumulating a large amount of static electricity, and the touch electrodes and / or the touch wires are prevented from losing efficacy due to the influence of the static electricity.

Description

Technical Field

[0001] The present disclosure relates to the field of display technology, and in particular to a display panel and a display device. Background Art

[0002] In the manufacturing process of OLED (Organic Light-Emitting Diode) display panels, a mask plate is required to produce some film layers. Multiple contacts and separations between the mask plate and the support column will generate static electricity, which will enter the signal line. When too much static electricity accumulates in the signal line, it will damage the signal line or its adjacent structures.

[0003] Among them, there is a lot of static electricity in the signal line set in the touch layer. When the static electricity in the signal line accumulates to a certain extent, it will damage the signal line or its adjacent structure, affect the touch lead or touch electrode of the touch layer, and affect the touch effect of the display panel. Summary of the invention

[0004] In order to solve the above technical problems, the present disclosure provides a display panel and a display device.

[0005] In a first aspect, the present disclosure provides a display panel, comprising:

[0006] Touch electrodes and touch wirings; the touch wirings are electrically connected to corresponding touch electrodes;

[0007] A first signal line; the first signal line and the touch electrode and / or touch wiring are located in the same layer;

[0008] At least one electrostatic protection structure, the electrostatic protection structure includes at least one first part and at least one second part, the first part is electrically connected to the first signal line; the second part and the first part are located in different layers of insulation and at least partially overlap.

[0009] In a second aspect, the present disclosure provides a display device, comprising any display panel provided in the first aspect.

[0010] Compared with the prior art, the technical solution provided by the present invention has the following advantages:

[0011] The display panel provided by the present disclosure includes touch electrodes and touch wiring; the touch wiring is electrically connected to the corresponding touch electrodes to realize the touch function of the display panel. The first signal line in the display panel is located in the same film layer as the touch electrode and / or the touch wiring, and is formed by using the same layer of metal. This also leads to that when the amount of static electricity accumulated in the first signal line is large, it is easy to cause damage to the touch electrode or touch wiring arranged in the same layer. Therefore, an electrostatic protection structure can be provided to connect it to the first signal line to release the static electricity accumulated in the first signal line. The first part of the electrostatic protection structure is electrically connected to the first signal line to introduce the static electricity in the first signal line. The second part of the electrostatic protection structure is located in an insulated setting on a different layer from the first part and at least partially overlaps to form a cross-bridge structure. The cross-bridge structure has a small capacity to store static electricity and is easily broken down by static electricity to release static electricity. Therefore, the present disclosure can prevent the first signal line from accumulating a large amount of static electricity and prevent the touch electrode and / or touch wiring from failing due to static electricity. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0014] Figure 1 A schematic diagram of the structure of a display panel provided in an embodiment of the present disclosure;

[0015] Figure 2 A schematic diagram of a structure for setting an electrostatic protection structure provided in an embodiment of the present disclosure;

[0016] Figure 3 A method for providing an embodiment of the present disclosure Figure 2 Schematic diagram of the cross section of AA';

[0017] Figure 4 A schematic diagram of another structure for setting an electrostatic protection structure provided in an embodiment of the present disclosure;

[0018] Figure 5 A schematic diagram of another structure for setting an electrostatic protection structure provided in an embodiment of the present disclosure;

[0019] Figure 6 A schematic diagram of another structure for setting an electrostatic protection structure provided in an embodiment of the present disclosure;

[0020] Figure 7A schematic diagram of a partial structure of a display panel provided by an embodiment of the present disclosure;

[0021] Figure 8 A schematic diagram of a structure of an electrostatic protection structure provided in an embodiment of the present disclosure;

[0022] Fig. 9 A method for providing an embodiment of the present disclosure Figure 1 Schematic diagram of the cross section of BB';

[0023] Fig.10 A cross-sectional schematic diagram of another electrostatic protection structure provided in an embodiment of the present disclosure;

[0024] Fig.11 A schematic diagram of the structure of another display panel provided in an embodiment of the present disclosure;

[0025] Fig.12 A schematic diagram of a partial structure of another display panel provided in an embodiment of the present disclosure;

[0026] Fig.13 A method provided in the embodiment of the present disclosure Fig.12 Schematic diagram of the structure of the middle B3 area;

[0027] Fig.14 A method provided in the embodiment of the present disclosure Figure 1 Schematic diagram of the structure of the middle B4 area;

[0028] Fig.15 Another embodiment of the present disclosure provides Figure 1 Schematic diagram of the structure of the middle B4 area;

[0029] Fig.16 A schematic diagram of a partial structure of a display panel provided in an embodiment of the present disclosure;

[0030] Fig.17 A schematic diagram of a partial structure of another display panel provided in an embodiment of the present disclosure;

[0031] Fig.18 A schematic diagram of the structure of a display device provided in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0032] In order to more clearly understand the above-mentioned objectives, features and advantages of the present disclosure, the scheme of the present disclosure will be further described below. It should be noted that the embodiments of the present disclosure and the features in the embodiments can be combined with each other without conflict.

[0033] In the following description, many specific details are set forth to facilitate a full understanding of the present disclosure, but the present disclosure may also be implemented in other ways different from those described herein; it is obvious that the embodiments in the specification are only part of the embodiments of the present disclosure, rather than all of the embodiments.

[0034] In the manufacturing process of OLED display panels, a mask plate is required for the production of some film layers. During the multiple contacts and separations between the mask plate and the support pillars, a large amount of static electricity will be generated, and the static electricity will enter the surrounding signal lines. When too much static electricity accumulates in the signal line, the static electricity will damage the signal line or its adjacent structure. Among them, there are many signal lines located in the same film layer as the touch layer of the display panel, and more static electricity accumulates in the signal line. When the static electricity in the signal line of this layer accumulates to a certain extent, it will not only damage the signal line body or adjacent structures, but also have a certain impact on the touch layer, affecting the touch effect of the display panel.

[0035] In order to solve the above problems, an embodiment of the present disclosure provides a display panel. Figure 1 A schematic diagram of the structure of a display panel provided in an embodiment of the present disclosure is shown in FIG. Figure 2 A schematic diagram of a structure for setting an electrostatic protection structure provided in an embodiment of the present disclosure is shown. Figure 3 A method for providing an embodiment of the present disclosure Figure 2 Schematic diagram of the cross section of AA'; Figure 1-Figure 3 The display panel includes: touch electrodes 10 and touch traces 20; the touch traces 20 are electrically connected to the corresponding touch electrodes 10; first signal lines 30; the first signal lines 30 and the touch electrodes 10 and / or the touch traces 20 are located in the same layer.

[0036] At least one electrostatic protection structure 40 includes at least one first portion 41 and at least one second portion 42 , wherein the first portion 41 is electrically connected to the first signal line 30 ; the second portion 42 and the first portion 41 are located in different insulating layers and at least partially overlap.

[0037] Exemplarily, the display panel includes a touch electrode 10 and a touch wiring 20, the touch wiring 20 is connected to the corresponding touch electrode, and the touch wiring is also electrically connected to the control chip to transmit the sensing signal of the touch electrode to the control chip (the control chip is not shown in the figure). The touch wiring and the touch electrode are located in different metal layers and are isolated by an insulating layer. For example, the metal layer where the touch wiring is located is located on one side of the substrate, and the metal layer where the touch electrode is located is located on the side of the metal layer where the touch wiring is located away from the substrate, and the two metal layers are isolated by an insulating layer. Optionally, the positions of the metal layer where the touch wiring is located and the metal layer where the touch electrode is located relative to the substrate can also be adjusted to each other, and the embodiments of the present disclosure are not limited to this, and can be set according to actual needs.

[0038] Among them, the touch electrode includes a first touch electrode 11 and a second touch electrode 12, the first direction is the X direction, the second direction is the Y direction, and the first direction intersects with the second direction. The first touch electrode 11 extending along the X direction is arranged along the Y direction, and includes a plurality of first touch electrodes 11 in the X direction, and adjacent first touch electrodes 11 are interconnected through the same layer of metal. The second touch electrode 12 extending along the Y direction is arranged along the X direction, and includes a plurality of second touch electrodes 12 in the Y direction, and adjacent second touch electrodes 12 are connected through a bridge structure formed by a touch line. Based on this, the two groups of crossed touch electrodes form a mutual capacitance touch structure.

[0039] The display panel also includes a first signal line 30, and the first signal line 30 is located in the same layer as the touch electrode 10 and / or the touch wiring 20. Specifically, the prepared first signal line 30 is in the same metal layer as the touch electrode 10; or the prepared first signal line 30 is in the same metal layer as the touch wiring 20; or the first signal line 30 is a double-layer signal line, that is, the first signal line 30 is prepared by using the stacked area of ​​the metal layer where the touch electrode 10 is located and the metal layer where the touch wiring 20 is located. Since the first signal line 30 prepared by using the touch wiring 20 and / or the touch electrode 10 is easy to accumulate static electricity generated during the preparation of the display panel, the amount of static electricity accumulated in the first signal line 30 is too large. The amount of static electricity in the first signal line 30 is too large and cannot be released, which will not only damage the first signal line 30 body, but also affect the touch wiring 20 and the touch electrode 10 arranged on the same layer, thereby affecting the touch effect.

[0040] Hence, see Figure 2 and Figure 3 , the present disclosure provides at least one electrostatic protection structure 40, the electrostatic protection structure 40 includes at least one first portion 41 and at least one second portion 42. Figure 2 , the embodiment of the present disclosure provides an electrostatic protection structure 40, which includes a first portion 41 and a second portion 42. The first portion 41 is electrically connected to the first signal line 30, so that the static electricity in the first signal line 30 can be introduced into the first portion 41. The second portion 42 and the first portion 41 are located in different layers of insulation and at least partially overlap to form a cross-bridge structure, which can be referred to Figure 3A cross-sectional schematic diagram. Among them, insulating layers are arranged between different metal layers, and the material of the insulating layers is not restricted. The first part 41 and the second part 42 are equivalent to micro-capacitor structures, which can store static electricity, but the storage capacity of static electricity is weak after all, and static electricity breakdown is prone to occur. Moreover, the breakdown of the electrostatic protection structure 40 will not affect the circuit signal. Therefore, the embodiment of the present disclosure can guide the static electricity in the first signal line 30 to the electrostatic protection structure 40, and static electricity breakdown occurs at the electrostatic protection structure 40 to release static electricity, thereby preventing static electricity from being transmitted to the touch control wiring 20 or the touch control electrode 10, affecting the touch effect.

[0041] Optional, Figure 4 A schematic diagram of another electrostatic protection structure provided in the embodiment of the present disclosure is provided, referring to Figure 4 The electrostatic protection structure 40 includes a first portion 41 and three second portions 42. The first portion 41 and each second portion 42 overlap at least partially, and a micro-capacitor can be formed at the overlap, which generates electrostatic breakdown when static electricity is introduced and releases static electricity. In some optional embodiments, an electrostatic protection structure 40 may also include multiple first portions 41, which is not limited in the embodiments of the present disclosure.

[0042] In addition, the embodiment of the present disclosure does not limit the positional relationship between the first part and the second part. Figure 2 In the embodiment provided in , the first portion is located on a side of the second portion facing away from the substrate. In some other embodiments, the second portion is located on a side of the first portion facing away from the substrate.

[0043] It should be noted that the first signal line includes a variety of different types of signal lines, such as touch lines connected to touch electrodes, ground lines, etc. This embodiment of the disclosure does not provide a specific description of this, and the display panel also has a variety of wiring methods. The drawings provided in the embodiment of the disclosure are only an optional implementation method, which can be set according to actual needs.

[0044] In some embodiments, Figure 5 A schematic diagram of another electrostatic protection structure provided in the embodiment of the present disclosure is provided, referring to Figure 5 The display panel includes a second signal line 50 , and the first signal line 30 is insulated and overlapped with a portion of the second signal line 50 .

[0045] Exemplarily, in addition to the first signal line 30, the display panel is also provided with a second signal line 50. For example, the second signal line 50 can be a scan line, a reference signal line, a light control signal line, a touch line, and other different types of signal lines. The embodiment of the present disclosure does not limit this, and can be selected according to actual design requirements. Taking into account the display panel structure and space design, the first signal line 30 and the second signal line 50 may have an overlapping area when they are routed, such as forming an overlapping area B1. The first signal line 30 has a lot of static electricity accumulated, and a potential difference will be formed between the first signal line 30 and the second signal line 50. The overlapping area B1 is small, which is equivalent to a micro-capacitor structure, and has a small charge storage capacity. It is easy to exceed the capacitance load and be broken down, resulting in damage to the first signal line 30 and the second signal line 50.

[0046] Therefore, in the embodiment of the present disclosure, an electrostatic protection structure 40 is disposed on the first signal line 30 to guide the static electricity on the first signal line 30 to the electrostatic protection structure 40, thereby generating electrostatic breakdown at the electrostatic protection structure 40 and releasing the static electricity on the first signal line 30. This reduces the potential difference between the first signal line 30 and the second signal line 50, and avoids the situation where static electricity generates electrostatic breakdown at the overlapping area B1.

[0047] Optionally, in some scenarios, the second signal line needs to cross the first signal line through a bridge structure. In the actual production process, the bridge structure will make the overlapping area of ​​the two layers of metal wiring almost at the same height, similar to the metal tip discharge structure on the same layer, which is easily broken down by static electricity. If an electrostatic protection structure is set on the first signal line, static electricity can be introduced, and the electrostatic protection structure is used instead of the bridge structure, so that the electrostatic breakdown occurs in the electrostatic protection structure, ensuring the safety of the bridge structure between the first signal line and the second signal line.

[0048] In addition, an electrostatic protection structure can be provided at the position where static electricity enters the first signal line, or at the position before static electricity enters the overlapping area, so as to guide the electrostatic breakdown to occur before entering the overlapping area, so as to protect the wiring of the overlapping area and avoid the first signal line and the second signal line from being affected and causing poor functionality. When electrostatic breakdown occurs in the wiring of the display panel provided by the embodiment of the present disclosure, it will not affect the functions of the first signal line and the second signal line, thereby improving the performance of the display panel in preventing electrostatic breakdown and improving the stability and reliability of the display panel.

[0049] In some embodiments, Figure 6 A schematic diagram of another electrostatic protection structure provided in the embodiment of the present disclosure is provided, referring to Figure 6 , the electrostatic protection structure 40 is located on at least one side of the first signal line 30 .

[0050] Exemplarily, the electrostatic protection structure 40 may be disposed on one side of the first signal line 30, or may be disposed on both sides of the first signal line 30. Figure 5 The electrostatic protection structure 40 is located on one side of the first signal line 30. The static electricity in the first signal line 30 can be guided to the electrostatic protection structure 40 disposed on this side, and electrostatic breakdown occurs at the electrostatic protection structure 40 on this side to release the static electricity. Figure 6 , the electrostatic protection structure 40 is located on both sides of the first signal line 30, and the electrostatic protection structure 40 is arranged on both sides of the first signal line 30, so the static electricity of the first signal line 30 can be guided to the electrostatic protection structure 40 arranged on both sides of the first signal line 30, resulting in electrostatic breakdown and releasing static electricity. The electrostatic protection structure 40 is arranged on both sides of the first signal line 30, so that the space on both sides of the first signal line 30 can be fully utilized, and as many electrostatic protection structures 40 as possible are arranged to achieve the purpose of releasing the static electricity accumulated in the first signal line 30.

[0051] In some embodiments, the first signal line includes an isolated signal line; the second signal line includes a touch line; the isolated signal line is located between different touch lines; and the isolated signal line is electrically connected to the ground signal line.

[0052] For example, continue to refer to Figure 1 , the first signal line 30 includes an isolated signal line GU, and the second signal line 50 includes a touch line 20, wherein the touch line 20 includes a first touch line TX and a second touch line RX. The first touch line TX is electrically connected to the first touch electrode 11, and the second touch line RX is electrically connected to the second touch electrode 12, and respectively passes through the bending area 110 of the display panel and the FPC (Flexible Printed Circuit) to enter the binding area 120 of the display panel, and then is electrically connected to the control chip of the display panel in the terminal connection area 130 of the binding area. The control chip can receive the touch signal transmitted by the touch line 20 and perform calculation processing, and can also transmit the operation results to the devices in the non-display area and the display area for display, and provide the required signals for various signal lines.

[0053] The isolation signal line GU is located between different touch lines 20, for example, between the first touch line TX and the second touch line RX, to isolate different touch lines 20, to avoid mutual interference between touch signals of different touch lines 20, and to affect the transmission of touch signals and the final touch effect. In some application scenarios, the control chip is not provided with a port for connecting the isolation signal line GU, so the isolation signal line GU will be electrically connected to the ground signal line GND on the FPC, and connected to the GND port of the control chip together to achieve the isolation effect. However, the ground signal line GND is located at the edge area of ​​the display panel, and the static electricity generated during the manufacturing process of the display panel is most likely to enter the line at the edge of the display panel. Therefore, there is a lot of static electricity accumulated in the ground signal line GND, and after the isolation signal line GU is short-circuited with the ground signal line, there will also be a lot of static electricity in the isolation signal line GU.

[0054] In some embodiments, when the touch line 20 is connected to the control chip, the touch line 20 overlaps with the isolation signal line GU. Figure 7 A partial structural diagram of a display panel provided by an embodiment of the present disclosure, referring to Figure 7 , the display area of ​​the display panel includes four R corners, which are usually arc-shaped. The touch electrodes are usually square. After the touch electrodes in the R corner area are cut by the arc-shaped boundary, the touch electrodes need to be reconnected together through the bridge structure or the edge connection line to connect the same type of touch electrodes that are disconnected due to the cutting. The touch electrodes at the R corners are overlapped with the touch wiring 20, and need to cross different types of touch wiring 20 and the isolation signal line GU to be connected to the corresponding type of touch wiring 20. For example, Figure 7 The second touch electrode 12 at the middle R angle needs to be electrically connected to the second touch line RX at the edge, and the second touch electrode 12 needs to cross the first touch line TX and the isolated signal line GU to be electrically connected to the second touch line RX. In the above cases, there will be a bridge structure, and the static electricity accumulation ability of the bridge structure is weak. When static electricity enters the bridge structure, the bridge structure is easily broken down by static electricity. After the isolated signal line GU is connected to the ground signal line GND, a large amount of static electricity will enter the isolated signal line GU, and the touch line 20 (bridge structure) overlapping the isolated signal line GU is more likely to be broken down by static electricity, damaging the touch line 20, thereby affecting the touch effect.

[0055] Therefore, an electrostatic protection structure can be set on the isolated signal line GU, and the static electricity on the isolated signal line GU can be introduced into the electrostatic protection structure, and electrostatic breakdown is performed on the electrostatic protection structure to release the static electricity on the isolated signal line GU. The electrostatic protection structure is used to replace the overlapping area of ​​the touch line and the isolated signal line GU to ensure the safety of the bridge structure between the touch line and the isolated signal line GU. Even if electrostatic breakdown occurs, it will not affect the functions of the touch line and the isolated signal line GU, thereby improving the performance of the display panel in preventing electrostatic breakdown and improving the stability and reliability of the display panel.

[0056] In some embodiments, continue to refer to Figure 1 , the electrostatic protection structure is located in the binding area 120 of the display panel.

[0057] Exemplarily, the lower frame area of ​​the display panel generally includes a bending area 110 and a binding area 120. With the current trend of narrow frame display panels, the space occupied by the lower frame is also shrinking. As a result, the wiring space between the bending area 110 and the display area is gradually reduced, and the wiring space is relatively limited. Therefore, the selection of the location for setting the electrostatic protection structure in the lower frame area will be subject to certain restrictions. Although an electrostatic protection structure can also be set between the bending area 110 and the display area, the space is limited and may not be able to meet the needs of releasing a large amount of static electricity. Each signal line will be bound to the control signal through the binding area 120, and the space in the binding area 120 is large, so there is sufficient space to set the electrostatic protection structure.

[0058] In addition, the binding area 120 is closer to the terminal connection area 130 and closer to the incoming line position. The position can be understood as the initial position where the signal is transmitted to the display panel through the signal line. The electrostatic protection structure is set in the binding area 120. Before the static electricity reaches the overlapping area of ​​the first signal line and the second signal line, it will first pass through the area where the electrostatic protection structure is located. The static electricity will be guided into the electrostatic protection structure and undergo electrostatic breakdown there. This reduces the amount of static electricity passing through the overlapping area and ensures the safety of the overlapping area.

[0059] In some embodiments, the line width of the first portion is smaller than the line width of the first signal line; and the line width of the second portion is smaller than the line width of the second signal line.

[0060] For example, Figure 8 A schematic diagram of an electrostatic protection structure provided in an embodiment of the present disclosure is provided. Figure 5 Combined with Figure 8, the line width of the first part 41 of the electrostatic protection structure 40 is L1, the line width of the second part is L2, the line width of the first signal line 30 is L1', and the line width of the second signal line 50 is L2'. Among them, L1<L1', L2<L2'. The purpose of setting the electrostatic protection structure 40 in the embodiment of the present disclosure is to replace the electrostatic breakdown at the overlapping area B1 of the first signal line 30 and the second signal line 50 through the electrostatic protection structure 40. The amount of static electricity in the first signal line 30 is relatively large, and the first part 41 is electrically connected to the first signal line 30 to guide the static electricity to the first part 41, so the first part is equivalent to replacing the first signal line 30. The second part 42 is insulated and overlapped with the first part, and the second signal line 50 also overlaps with the first signal line, so the second part 42 is equivalent to replacing the second signal line 50.

[0061] Based on this, in order to allow static electricity to break down in the electrostatic protection structure 40 before entering the overlapping area B1, it is necessary to make the line width L1 of the first portion 41 smaller than the line width L1' of the first signal line 30, and the line width L2 of the second portion 42 smaller than the line width L2' of the second signal line 50. That is, compared with the overlapping area B1 of the first signal line 30 and the second signal line 50, the overlapping area of ​​the first portion 41 and the second portion 42 of the electrostatic protection structure 40 is smaller, and the storage capacity of static electricity is weaker, so that static electricity can break down more quickly, thereby achieving the purpose of releasing the static electricity in the first signal line 30 and avoiding static electricity breakdown in the overlapping area B1.

[0062] In some embodiments, Fig. 9 A method for providing an embodiment of the present disclosure Figure 1 Schematic diagram of the cross section of BB', Fig.10 A cross-sectional schematic diagram of another electrostatic protection structure provided in an embodiment of the present disclosure, referring to Fig. 9 and Fig.10 , the first portion 41 and the touch trace 20 are located in the same layer, located in the first metal layer TM1, and the second portion 42 and the touch electrode 10 are located in the same layer, located in the second metal layer TM2. In some optional embodiments, refer to Figure 3 and Fig. 9 The first part 41 and the touch electrode 10 are located in the same layer, which is located in the second metal layer TM2, and the second part 42 and the touch trace 20 are located in the same layer, which is located in the first metal layer TM1. The electrostatic protection structure is made of the metal layer where the touch electrode 10 and the metal layer where the touch trace 20 are located, which can reduce the resistance between the electrostatic protection structure and the first signal line, and quickly guide the static electricity in the first signal line to the electrostatic protection structure.

[0063] It should be noted that the touch trace 20 provided in the embodiment of the present disclosure is located in the second metal layer TM2, and the touch electrode 10 is located in the first metal layer TM1. In other embodiments, the touch trace 20 is located in the first metal layer TM1, and the touch electrode 10 is located in the second metal layer TM2. The specific configuration can be made according to the requirements of the display panel. The drawings provided in the embodiment of the present disclosure are only examples and represent an optional implementation.

[0064] In some embodiments, Fig.11 A schematic diagram of the structure of another display panel provided in an embodiment of the present disclosure is shown in FIG. Fig.12 A partial structural diagram of another display panel provided in an embodiment of the present disclosure, referring to Fig.11 and Fig.12 The display panel includes a first non-display area 210, a second non-display area 220, a display area 230 and an optical component setting area 240; the second non-display area 220 surrounds the optical component setting area 240; the display area 230 surrounds the second non-display area 220; and the first non-display area 210 surrounds the display area 230.

[0065] The first signal line 30 includes a crack detection signal line PCD; the crack detection signal line PCD includes a third part 201, a fourth part 202 and a fifth part 203; the third part 201 is located in the second non-display area 220 and surrounds the optical setting area 240; the fourth part 202 is connected to the third part 201 and is located in the display area 230; the fifth part is connected to the fourth part, is located in the first non-display area 210 and is set around the display area 220.

[0066] Exemplarily, the optical component setting area 240 is used to place optical components, such as placing a camera. The optical component setting area 240 can be formed by a through hole or a blind hole, so the optical component setting area 240 is located in the second non-display area 220, that is, the second non-display area 220 surrounds the optical component setting area 240. In addition, the display area 230 surrounds the second non-display area 220, and the display area 230 includes a plurality of light-emitting elements. The second non-display area 220 also serves to isolate the optical component setting area 240 from the display area 230. Metal wiring, packaging structure, etc. can also be set in the second non-display area 220 to prevent water and oxygen substances in the external environment from entering the display area 230 through the optical component setting area 240. And the first non-display area 210 surrounds the display area 230, and the first non-display area 210 is provided with a variety of circuit structures and metal wiring, etc.

[0067] Usually, during the production process of display panels, multiple display panel patterns are formed on a motherboard, and then the motherboard is cut to obtain discrete display panels. However, cracks may be generated at the edge of the display panel during the cutting process. As the use time increases, the cracks may extend into the inside of the display panel, affecting the service life of the display panel. Therefore, a circle of metal wiring (crack detection signal line) is formed at the edge of the display panel, and the control chip is used to detect the parameters of the metal wiring to determine whether there are cracks in the display panel.

[0068] For example, the first signal line 30 includes a crack detection signal line PCD, that is, the crack detection signal line is also formed by the metal layer where the touch wiring and / or the touch electrode are located. Usually, the crack detection signal line PCD includes a third part 201, a fourth part 202 and a fifth part 203, the third part 201 is connected to the fourth part 202, and the fourth part 202 is connected to the fifth part 203. Among them, the third part 201 is located in the second non-display area 220, surrounding the optical setting area 240, and presents a ring structure. The fourth part is located in the display area 230, so as to introduce the crack detection signal line PCD into the first non-display area 210. The fifth part 203 is located in the first non-display area 210 and is arranged around the display area 220. Thereby, a complete crack detection signal line is formed, which can detect cracks in each cutting edge area of ​​the display panel.

[0069] However, since the crack detection signal line PCD is located at the edge of the display panel and is usually formed by the metal layer where the touch wiring and / or touch electrode are located, the amount of static electricity in the crack detection signal line PCD is relatively large, and static electricity breakdown may easily occur in the crack detection signal line PCD, and the performance of the touch wiring or touch electrode may also be easily affected. Therefore, an electrostatic protection structure may be provided on the crack detection signal line PCD to introduce the static electricity on the crack detection signal line PCD into the electrostatic protection structure so that static electricity breakdown occurs on the electrostatic protection structure, thereby reducing the static electricity on the crack detection signal line PCD and ensuring the safety of the crack detection signal line PCD.

[0070] In some embodiments, continue to refer to Fig.12 , the electrostatic protection structure is located in the second non-display area 220 where the third portion 201 and the fourth portion 202 are connected; and / or, the first non-display area 210 where the fourth portion 202 and the fifth portion 203 are connected.

[0071] Exemplarily, there is a bank structure between the second non-display area 220 and the light device setting area 240. The bank structure can not only block the metal wiring to avoid light reflection, but also block water and oxygen from entering the display area 230. The bank structure usually has a certain height. If the third part 201 of the crack detection signal line PCD is connected to the fourth part 202, it is necessary to set a bridge structure to cross the bank structure. In addition, the second non-display area 220 also includes a metal compensation ring. The third part 201 is connected to the fourth part 202, and it is also necessary to cross the metal compensation ring to avoid short circuit, so a bridge structure is also required. Therefore, a bridge structure will be set at the connection position between the third part 201 and the fourth part 202, and the electrostatic storage capacity of the bridge structure is weak, and the amount of static electricity in the crack detection signal line PCD is large, so electrostatic breakdown is prone to occur at this position, damaging the crack detection signal line PCD. Therefore, an electrostatic protection structure can be provided in the second non-display area 220 at the connection position between the third portion 201 and the fourth portion 202, that is, an electrostatic protection structure ( Fig.12 The electrostatic protection structure is not shown in the figure), so that the static electricity breaks down in the electrostatic protection structure and releases the static electricity.

[0072] Fig.13 A method provided in the embodiment of the present disclosure Fig.12 Schematic diagram of the structure of the B3 area, see Fig.13 In some scenarios, the electrostatic protection structure can also be set in the first non-display area 210 at the connection position between the fourth part 202 and the fifth part 203 of the crack detection signal line PCD. Since the first non-display area 210 of the display panel is provided with a variety of signal lines, such as the ground signal line GND, and the crack detection signal line PCD is located in the fourth part 202 of the display area 220, when it is connected to the fifth part 203 located in the first non-display area 210, it is necessary to cross the signal line of the first non-display area 210 to avoid a short circuit. Therefore, an electrostatic protection structure can be set in the first non-display area 210 at the connection position between the fourth part 202 and the fifth part 203, so that static electricity breaks down in the electrostatic protection structure and releases static electricity.

[0073] It should be noted that the disclosed embodiment does not limit the upper and lower positions of the first and second parts of the electrostatic protection structure, nor does it limit the correspondence between the touch wiring and the metal layer of the touch electrode used by the two. The above is only an example.

[0074] In some embodiments, Fig.14 A method provided in the embodiment of the present disclosure Figure 1 Schematic diagram of the structure of the B4 area, see Fig.14 Combined with Figure 1 The first signal line 30 includes a ground signal line GND; the electrostatic protection structure 40 is disposed in the fan-out wiring area of ​​the display panel.

[0075] Exemplarily, the display panel includes a fan-out routing area, which is located between the bending area 110 and the display area. When multiple signal routing lines in the display area and non-display area of ​​the display panel are led to the lower frame, they often need to pass through the fan-out routing area. In addition, the display panel includes a polarizer, and an optical adhesive layer is set at the periphery of the polarizer to protect the display panel, but some gaps will be generated at the junction of the optical adhesive layer and the boundary of the polarizer, causing static electricity of the entire machine to enter along the gap. The TP terminal corresponding to the fan-out routing area at the gap also causes static electricity to enter the signal line at the TP terminal through the gap, increasing the amount of static electricity in the signal line. In some application scenarios, the TP terminal is connected to the ground signal line GND, resulting in a large amount of static electricity in the ground signal line GND, which is prone to electrostatic breakdown and affects the surrounding effective signals. Therefore, the electrostatic protection structure 40 can be set in the fan-out routing area of ​​the display panel to release the static electricity in the signal line of the fan-out routing area.

[0076] In some embodiments, continue to refer to Fig.14 The ground signal line GND includes a sixth portion 204 and a seventh portion 205; the sixth portion 204 and the seventh portion 205 are electrically connected; the sixth portion 204 extends along the pixel column direction of the display panel; and the seventh portion 205 extends along the pixel row direction of the display panel.

[0077] The electrostatic protection structure 40 is electrically connected to the sixth portion 204 and is located between the sixth portion 204 and an adjacent signal line; and / or the electrostatic protection structure is electrically connected to the seventh portion and is located between the seventh portion and an adjacent signal line.

[0078] Exemplarily, the ground signal line GND unplugs the sixth part 204 and the seventh part 205 during the routing process, wherein the sixth part 204 extends along the pixel column direction of the display panel, for example, along the Y direction, and the seventh part 205 extends along the pixel row direction of the display panel, for example, along the X direction. When the electrostatic protection structure 40 is set, the electrostatic protection structure 40 can be electrically connected to the sixth part 204 and arranged between the sixth part 204 and the adjacent signal line, making full use of the space between the adjacent signal lines and reducing space occupancy. Similarly, the electrostatic protection structure 40 can also be electrically connected to the seventh part 205 and arranged between the seventh part 205 and the adjacent signal line. Alternatively, multiple electrostatic protection structures 40 are set, some of which are connected to the sixth part 204, and some of which are connected to the seventh part 205. The present disclosure embodiment does not limit this and can be set according to actual needs.

[0079] In some other embodiments, Fig.15 Another embodiment of the present disclosure provides Figure 1 Schematic diagram of the structure of the B4 area, see Fig.15 Combined with Figure 1The electrostatic protection structure 40 is arranged on a side of the sixth portion 204 away from the adjacent signal line, and / or the electrostatic protection structure 40 is arranged on a side of the seventh portion 205 away from the adjacent signal line. Based on the current structure, when the electrostatic protection structure 40 is electrostatically broken down, it will not affect other signal lines, and the performance of other signal lines can be ensured.

[0080] In some embodiments, Fig.16 A partial structural diagram of a display panel provided in an embodiment of the present disclosure is shown in FIG16 . The distance L3 between the end of the first portion 41 away from the first signal line 30 and the adjacent signal line is greater than or equal to 50 μm.

[0081] Exemplarily, an electrostatic protection structure is provided on the first signal line 30 in order to introduce static electricity on the first signal line 30 into the electrostatic protection structure so that electrostatic breakdown occurs on the electrostatic protection structure. The breakdown of the electrostatic protection structure will not affect the function of the first signal line 30, and the static electricity on the first signal line 30 can be released. However, if the electrostatic protection structure is too close to the adjacent signal line of the first signal line 30, when the electrostatic protection structure undergoes electrostatic breakdown, the adjacent signal line will be damaged, affecting the function of the adjacent signal line. Therefore, according to the data simulation results, the distance L3 between the end of the first portion 41 away from the first signal line 30 and the adjacent signal line can be made greater than or equal to 50μm to ensure the safety of the adjacent signal line.

[0082] In some embodiments, Fig.17 A partial structural diagram of another display panel provided in an embodiment of the present disclosure, referring to Fig.17 A dummy wiring 60 is provided between the electrostatic protection structure and the adjacent signal line.

[0083] Exemplarily, in order to prevent the electrostatic protection structure from damaging adjacent signal lines when electrostatic breakdown occurs, a dummy line 60 can be set between the electrostatic protection structure and the adjacent signal lines. The static electricity transmitted outward during electrostatic breakdown will be intercepted by the dummy line 60. Even if the dummy line 60 is damaged, it will not affect the functions of other lines, and the safety of adjacent signal lines can be ensured. When the space between the electrostatic protection structure and the adjacent signal lines is limited and sufficient spacing cannot be maintained, the adjacent signal lines can be prevented from being damaged by setting a dummy line 60.

[0084] In some embodiments, continue to refer to Fig.17 , the dummy trace 60 and the adjacent signal trace are located on the same layer.

[0085] Exemplarily, the dummy trace 60 is set to ensure the safety of adjacent signal lines, intercept the impact of electrostatic breakdown on adjacent signal lines, and set the dummy trace 60 and adjacent signal lines in the same layer to reduce the restrictions between the film layers, which can directly intercept some of the impacts generated when the electrostatic protection structure releases static electricity, which is faster and more direct, and improves the interception effect. Similarly, the dummy trace can also be set in the same film layer as the electrostatic protection structure to improve the protection effect.

[0086] In some embodiments, continue to refer to Fig.17 , the distance L4 between the dummy trace 60 and the adjacent signal line is greater than or equal to three times the line width of the touch trace.

[0087] If there is a lot of static electricity stored in the electrostatic protection structure and static electricity breakdown occurs, the impact on the surrounding wiring is also relatively serious. In this case, if the interval between the dummy wiring 60 and the adjacent signal line is small, the dummy wiring 60 may not be able to completely intercept the impact of the static electricity breakdown, and some static electricity may be released outward to damage the adjacent signal line. In order to avoid the above situation, a certain gap should be maintained between the dummy wiring 60 and the adjacent signal line. For example, the distance L4 between the dummy wiring 60 and the adjacent signal line is greater than or equal to three times the line width of the touch wiring. At this distance, even if the static electricity breakdown of the electrostatic protection structure is relatively serious, the dummy wiring 60 cannot completely isolate the influence of static electricity, and will not damage the adjacent signal lines.

[0088] The present disclosure also provides a display device, including a display panel as in any one of the above display panel embodiments. Therefore, the display device has the technical features of the display panel provided in the embodiments of the present disclosure, and can achieve the beneficial effects of the display panel provided in the embodiments of the present disclosure. For the similarities, reference can be made to the above description of the display panel provided in the embodiments of the present disclosure, and no further description is given here.

[0089] For example, Fig.18 Schematic diagram of a display device provided by an embodiment of the present disclosure. Fig.18 As shown, the display device provided by the embodiment of the present disclosure includes the display panel 100 provided by any of the above embodiments of the present disclosure. Fig.18 The embodiments provided only take a mobile phone as an example to illustrate the display device. It can be understood that the display device provided in the embodiments of the present application can be any electronic product with a display function, including but not limited to the following categories: mobile phones, televisions, laptops, desktop displays, tablet computers, digital cameras, smart bracelets, smart glasses, car displays, medical equipment, industrial control equipment, touch interactive terminals, etc. The embodiments of the present invention do not specifically limit this.

[0090] The display device provided by the embodiment of the present disclosure includes the above-mentioned display panel, and thus can solve the same technical problems as the above-mentioned display panel embodiment and achieve the same technical effects, which will not be repeated here.

[0091] It should be noted that, in this article, relational terms such as "first" and "second" 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 sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0092] The above description is only a specific embodiment of the present disclosure, so that those skilled in the art can understand or implement the present disclosure. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present disclosure. Therefore, the present disclosure will not be limited to the embodiments described herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A display panel, characterized in that: include: Touch electrodes and touch wirings; the touch wirings are electrically connected to corresponding touch electrodes; A first signal line; the first signal line and the touch electrode and / or touch wiring are located in the same layer; At least one electrostatic protection structure, the electrostatic protection structure includes at least one first part and at least one second part, the first part is electrically connected to the first signal line; the second part and the first part are located in different layers of insulation and at least partially overlap.

2. The display panel according to claim 1, characterized in that: The display panel includes a second signal line, and the first signal line is insulated and overlapped with a portion of the second signal line.

3. The display panel according to claim 2, characterized in that: The electrostatic protection structure is located on at least one side of the first signal line.

4. The display panel according to claim 2, characterized in that: The first signal line includes an isolation signal line; the second signal line includes a touch line; the isolation signal line is located between different touch lines; and the isolation signal line is electrically connected to a ground signal line.

5. The display panel according to claim 4, characterized in that: The electrostatic protection structure is located in a binding area of ​​the display panel.

6. The display panel according to claim 2, characterized in that: The line width of the first portion is smaller than the line width of the first signal line; and the line width of the second portion is smaller than the line width of the second signal line.

7. The display panel according to claim 1, characterized in that: The first portion and the touch wiring are located in the same layer, and the second portion and the touch electrode are located in the same layer; Alternatively, the first portion and the touch electrodes are located at the same layer, and the second portion and the touch traces are located at the same layer.

8. The display panel according to claim 2, characterized in that: The display panel comprises a first non-display area, a second non-display area, a display area and an optical component setting area; the second non-display area surrounds the optical component setting area; the display area surrounds the second non-display area; and the first non-display area surrounds the display area; The first signal line includes a crack detection signal line; the crack detection signal line includes a third part, a fourth part and a fifth part; the third part is located in the second non-display area and surrounds the optical setting area; the fourth part is connected to the third part and is located in the display area; the fifth part is connected to the fourth part, is located in the first non-display area and is set around the display area.

9. The display panel according to claim 8, characterized in that: The electrostatic protection structure is located in the second non-display area at a connection position between the third portion and the fourth portion; and / or, located in the first non-display area at a connection position between the fourth portion and the fifth portion.

10. The display panel according to claim 1, characterized in that: The first signal line includes a ground signal line; and the electrostatic protection structure is arranged in a fan-out wiring area of ​​the display panel.

11. The display panel according to claim 10, characterized in that: The ground signal line includes a sixth portion and a seventh portion; the sixth portion and the seventh portion are electrically connected; the sixth portion extends along a pixel column direction of the display panel; the seventh portion extends along a pixel row direction of the display panel; The electrostatic protection structure is electrically connected to the sixth portion and is located between the sixth portion and an adjacent signal line; And / or, the electrostatic protection structure is electrically connected to the seventh portion and is located between the seventh portion and an adjacent signal line.

12. The display panel according to any one of claims 1 to 11, characterized in that: A distance between an end of the first portion away from the first signal line and an adjacent signal line is greater than or equal to 50 μm.

13. The display panel according to any one of claims 1 to 11, characterized in that: A dummy wiring is arranged between the electrostatic protection structure and the adjacent signal line.

14. The display panel according to claim 13, characterized in that: The dummy wiring and the adjacent signal wiring are located in the same layer.

15. The display panel according to claim 13, characterized in that: The distance between the dummy wiring and the adjacent signal wiring is greater than or equal to three times the line width of the touch wiring.

16. A display device, characterized in that: Comprising the display panel as described in any one of claims 1-15.

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