Display panel and display device

Abstract

Embodiments of the present application provide a display panel and a display device. The display panel comprises a display area and a non-display area. The non-display area comprises a transition area and a binding area. The transition area is located on one side of the binding area close to the display area. The transition area comprises: a first transition unit electrically connected with a first ground line in the display area; and a second transition unit electrically connected with a first touch signal line in the display area. The binding area comprises a first binding pad and a second binding pad. The first binding pad and the second binding pad are used for connecting a flexible circuit board or a driving chip. The first transition unit and the first binding pad are electrically connected through a second ground line located in the non-display area. The second transition unit and the second binding pad are electrically connected through a second touch signal line located in the non-display area. The impedance of the second ground line is smaller than the impedance of the second touch signal line. The embodiments of the present application can improve the electrostatic protection capability of the display panel.

Description

Technical Field

[0001] This application belongs to the field of display technology, and in particular relates to a display panel and display device. Background Technology

[0002] With the development of touch technology, more and more terminals are equipped with touch-enabled display panels. In touch display panels, electrostatic discharge can affect the normal operation of electronic components, leading to abnormal touch operation. Summary of the Invention

[0003] This application provides a display panel and display device that can reduce the impact of static electricity on touch signal lines and their connected touch electrodes, thereby improving the electrostatic protection capability of the display panel.

[0004] In a first aspect, embodiments of this application provide a display panel, the display panel including a display area and a non-display area located on at least one side of the display area, the non-display area including a transition area and a bonding area, the transition area being located on the side of the bonding area closer to the display area, the transition area including: a first transition unit electrically connected to a first ground wire in the display area; a second transition unit electrically connected to a first touch signal line in the display area; the bonding area including a first bonding pad and a second bonding pad, the first bonding pad and the second bonding pad being used to connect a flexible circuit board or a driver chip; the first transition unit and the first bonding pad being electrically connected through a second ground wire located in the non-display area, the second transition unit and the second bonding pad being electrically connected through a second touch signal line located in the non-display area; wherein, the impedance of the second ground wire is less than the impedance of the second touch signal line.

[0005] Secondly, embodiments of this application provide a display device, which includes a display panel as described in the first aspect.

[0006] In the display panel and display device of this application embodiment, the first adapter unit is electrically connected to the first bonding pad via a second grounding wire located in the non-display area, and the second adapter unit is electrically connected to the second bonding pad via a second touch signal line located in the non-display area. Since the impedance of the second grounding wire is less than the impedance of the second touch signal line, static electricity will preferentially be released through the line containing the relatively lower impedance second grounding wire, thereby reducing the impact of static electricity on the touch signal line and its connected touch electrodes, and improving the electrostatic protection capability of the display panel. Attached Figure Description

[0007] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be briefly introduced below. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0008] Figure 1 This is a partial structural diagram of a display panel provided in an embodiment of this application;

[0009] Figure 2 A size comparison diagram of the first and second adapter units in the display panel provided in this application embodiment;

[0010] Figure 3 This is a partial structural diagram of a display panel provided in an embodiment of this application;

[0011] Figure 4 A schematic diagram of another partial structure of the display panel provided in an embodiment of this application;

[0012] Figure 5 A schematic diagram of another partial structure of the display panel provided in an embodiment of this application;

[0013] Figure 6 This is a cross-sectional schematic diagram of a display panel provided in an embodiment of this application;

[0014] Figure 7 Another structural schematic diagram of the display panel provided in the embodiments of this application;

[0015] Figure 8 A size comparison diagram of the first sub-transfer unit, the second sub-transfer unit, and the second transfer unit in the display panel provided in the embodiments of this application;

[0016] Figure 9 This is another partial structural diagram of a display panel provided in an embodiment of this application;

[0017] Figure 10 A circuit diagram of an electrostatic protection circuit in a display panel provided in an embodiment of this application;

[0018] Figure 11 Another circuit diagram of the electrostatic protection circuit in the display panel provided in the embodiments of this application;

[0019] Figure 12 This is another partial structural diagram of a display panel provided in an embodiment of this application;

[0020] Figure 13 Another cross-sectional view of the display panel provided in an embodiment of this application;

[0021] Figure 14 A planar schematic diagram of the array substrate and the packaging substrate in the display panel provided in the embodiments of this application;

[0022] Figure 15This is a partial planar schematic diagram of the array substrate in the display panel provided in an embodiment of this application;

[0023] Figure 16 Another partial planar schematic diagram of the array substrate in the display panel provided in the embodiments of this application;

[0024] Figure 17 Another cross-sectional schematic diagram of the display panel provided in the embodiments of this application;

[0025] Figure 18 Another partial planar schematic diagram of the array substrate in the display panel provided in the embodiments of this application;

[0026] Figure 19 Another cross-sectional schematic diagram of the display panel provided in the embodiments of this application;

[0027] Figure 20 This is a partial planar schematic diagram of a display panel provided in an embodiment of this application;

[0028] Figure 21 Another plan view of the display panel provided in the embodiments of this application;

[0029] Figure 22 Another plan view of the display panel provided in the embodiments of this application;

[0030] Figure 23 This is a schematic diagram of a display device provided in an embodiment of this application. Detailed Implementation

[0031] The features and exemplary embodiments of various aspects of this application will be described in detail below. To make the objectives, technical solutions, and advantages of this application clearer, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain this application and not to limit it. For those skilled in the art, this application can be implemented without some of these specific details. The following description of the embodiments is merely to provide a better understanding of this application by illustrating examples.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes said element.

[0033] It should be understood that the term "and / or" used in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0034] It should be noted that the transistors in this embodiment are described using a P-type transistor as an example, but are not limited to P-type transistors; they can also be replaced with N-type transistors. For an N-type transistor, the on-state is high and the off-state is low. That is, when the gate of an N-type transistor is high, its first and second terminals are connected; when the gate of an N-type transistor is low, its first and second terminals are off. For a P-type transistor, the on-state is low and the off-state is high. That is, when the control terminal of a P-type transistor is low, its first and second terminals are connected; when the control terminal of a P-type transistor is high, its first and second terminals are off. In specific implementation, the gate of each transistor is used as its control electrode. Furthermore, depending on the signal and type of the gate of each transistor, its first electrode can be used as the source and its second electrode as the drain, or its first electrode can be used as the drain and its second electrode as the source. No distinction is made here. In addition, the on-level and off-level in the embodiments of the present invention are general terms. The on-level refers to any level that can turn on the transistor, and the off-level refers to any level that can turn off / turn off the transistor.

[0035] In the embodiments of this application, the term "electrical connection" can refer to a direct electrical connection between two components, or it can refer to an electrical connection between two components via one or more other components.

[0036] In the embodiments of this application, the first node is defined only for the convenience of describing the circuit structure, and the first node is not an actual circuit unit.

[0037] Various modifications and variations can be made to this application without departing from its spirit or scope, which will be apparent to those skilled in the art. Therefore, this application is intended to cover modifications and variations falling within the scope of the corresponding claims (the claimed technical solutions) and their equivalents. It should be noted that the embodiments provided in this application can be combined with each other without contradiction.

[0038] Before describing the technical solutions provided in the embodiments of this application, in order to facilitate understanding of the embodiments of this application, this application first specifically explains the problems existing in the related technologies:

[0039] The display panel may generate static electricity during production or operation. If the static electricity enters the touch signal line and / or touch electrode, it may damage the touch signal line and / or touch electrode, causing abnormal touch operation of the display panel.

[0040] To address the technical problem that touch signal lines and / or touch electrodes are easily damaged by electrostatic discharge, this application provides a display panel and a display device.

[0041] The technical concept of this application embodiment is that the impedance of the second grounding line between the first adapter unit and the first bonding pad is less than the impedance of the second touch signal line between the second adapter unit and the second bonding pad. Since the impedance of the second grounding line is less than the impedance of the second touch signal line, static electricity will preferentially be released through the line containing the relatively lower impedance second grounding line, thereby reducing the impact of static electricity on the touch signal line and its connected touch electrodes, and improving the electrostatic protection capability of the display panel.

[0042] The display panel provided in the embodiments of this application will be described first below.

[0043] Figure 1 This is a partial structural diagram of a display panel provided in an embodiment of this application. Figure 1 As shown, the display panel 10 may include a display area AA and a non-display area NA located on at least one side of the display area AA. The non-display area NA may include a transition area 11 and a bonding area 12. Along the second direction Y, the transition area 11 may be located on the side of the bonding area 12 closer to the display area AA. The second direction Y intersects the first direction X. For example, the second direction Y may be the column direction of the display panel 10, and the first direction X may be the row direction of the display panel 10. It should be noted that the transition area 11 and the bonding area 12 are defined only for the convenience of describing the structure of the display panel 10; the transition area 11 can be understood as the area where the transition unit is located, and the bonding area 12 can be understood as the area where the bonding pads are located.

[0044] The transition area 11 may include a first transition unit 111 and a second transition unit 112. The first transition unit 111 may be electrically connected to the first ground line D1 in the display area AA. The second transition unit 112 is electrically connected to the first touch signal line TP1 in the display area AA. That is, the first transition unit 111 may be a ground transition unit, and the second transition unit 112 may be a touch transition unit. In some examples, the first transition unit 111 may specifically include a transition pad or a transition hole. Similarly, the second transition unit 112 may also include a transition pad or a transition hole.

[0045] The bonding area 12 may include a first bonding pad 121 and a second bonding pad 122, which can be used to connect a flexible printed circuit (FPC) or a driver chip.

[0046] The first adapter unit 111 is electrically connected to the first bonding pad 121 via a second ground line D2 located in the non-display area NA, and the second adapter unit 112 is electrically connected to the second bonding pad 122 via a second touch signal line TP2 located in the non-display area NA. The impedance of the second ground line D2 can be less than the impedance of the second touch signal line TP2.

[0047] like Figure 1 As shown, in some examples, the transition area 11 may include multiple second transition units 112, and the bonding area 12 may include multiple second bonding pads 122. The multiple second transition units 112 and the multiple second bonding pads 122 can be electrically connected via multiple second touch signal lines TP2. For example, the cross-sectional areas of the multiple second touch signal lines TP2 may be equal but their lengths may be unequal; therefore, the impedances of the multiple second touch signal lines TP2 may be different. The impedance of the second ground line D2 may be less than the impedance of each of the second touch signal lines TP2. For example, the impedance of the second ground line D2 may be less than the impedance of the longest second touch signal line TP2.

[0048] Since the impedance of the second grounding wire D2 is less than that of the second touch signal line TP2, the static electricity in the display panel will be preferentially released through the line where the second grounding wire D2 with relatively lower impedance is located, thereby reducing the impact of static electricity on the touch signal line and the touch electrodes connected to it, and improving the electrostatic protection capability of the display panel.

[0049] Figure 2 This is a size comparison diagram of the first and second adapter units in a display panel provided in an embodiment of this application. Figure 2As shown, according to some embodiments of this application, optionally, the size of the first adapter unit 111 may be larger than the size of the second adapter unit 112. For example, the distance of the first adapter unit 111 along the first direction X may be greater than the distance of the second adapter unit 112 along the first direction X, and / or, the distance of the first adapter unit 111 along the second direction Y may be greater than the distance of the second adapter unit 112 along the second direction Y. Figure 2 For example, taking the first adapter unit 111 and the second adapter unit 112 as adapter pads for illustration, it can be understood that when the first adapter unit 111 and the second adapter unit 112 are adapter holes (vias), the size of the first adapter unit 111 can also be larger than the size of the second adapter unit 112.

[0050] Thus, since the size of the first adapter unit 111 is larger than the size of the second adapter unit 112, that is, the conductive area (cross-sectional area) of the first adapter unit 111 is larger than the conductive area of ​​the second adapter unit 112, the impedance of the first adapter unit 111 is smaller than the impedance of the second adapter unit 112. This allows static electricity to be preferentially conducted to the first adapter unit 111 with lower impedance, further avoiding the impact of static electricity on the touch electrodes and touch signal lines.

[0051] Figure 3 This is a partial structural diagram of a display panel provided in an embodiment of this application. Figure 3 As shown, according to some embodiments of this application, optionally, the first adapter unit 111 may include a plurality of sub-adapter units 301 arranged at intervals. The number of the plurality of sub-adapter units 301 is not limited in the embodiments of this application. The plurality of sub-adapter units 301 in the same first adapter unit 111 can be electrically connected to the second bonding pad 122 after being connected in parallel through at least one second grounding wire D2. Figure 3 The example shown is that the first transition unit 111 includes three sub-transition units 301. However, it is understood that the first transition unit 111 may also include other numbers of sub-transition units 301.

[0052] Thus, by configuring the first transfer unit 111 into multiple sub-transfer units 301, static electricity can be dispersed through the multiple sub-transfer units 301, thereby further improving the electrostatic protection capability.

[0053] Figure 4 This is a schematic diagram of another partial structure of the display panel provided in an embodiment of this application. For example... Figure 4 As shown, with Figure 3 Unlike the illustrated embodiment, according to other embodiments of this application, optionally, multiple sub-transfer units 301 in the same first transfer unit 111 can be connected in series and electrically connected to the second bonding pad 122 through at least one second grounding wire D2.

[0054] Thus, by configuring the first transfer unit 111 into multiple sub-transfer units 301, static electricity can be dispersed through the multiple sub-transfer units 301, thereby further improving the electrostatic protection capability.

[0055] According to some embodiments of this application, optionally, the cross-sectional area of ​​the second grounding wire D2 may be larger than the cross-sectional area of ​​the second touch signal line TP2. For example, in some specific examples, the thickness of the second grounding wire D2 may be the same as the thickness of the second touch signal line TP2, but the linewidth of the second grounding wire D2 may be greater than the linewidth of the second touch signal line TP2. In other specific examples, the linewidth of the second grounding wire D2 may be the same as the linewidth of the second touch signal line TP2, but the thickness of the second grounding wire D2 may be greater than the thickness of the second touch signal line TP2. In still other specific examples, the linewidth of the second grounding wire D2 may be greater than the linewidth of the second touch signal line TP2, and the thickness of the second grounding wire D2 may be greater than the thickness of the second touch signal line TP2.

[0056] Thus, by making the cross-sectional area of ​​the second grounding wire D2 larger than that of the second touch signal line TP2, the impedance of the second grounding wire D2 can be made smaller than that of the second touch signal line TP2. Therefore, static electricity in the display panel will be preferentially released through the line where the second grounding wire D2 with relatively lower impedance is located, thereby reducing the impact of static electricity on the touch signal line and the touch electrodes connected to it, and improving the electrostatic protection capability of the display panel.

[0057] Figure 5 This is another partial structural diagram of the display panel provided in an embodiment of this application. For example... Figure 5 As shown, according to some embodiments of this application, optionally, the display panel 10 may further include an impedance unit 501, which may be connected in series with the second touch signal line TP2. The resistance values ​​of the impedance units 501 connected to different second touch signal lines TP2 may be the same or different. For example, in some examples, for any two second touch signal lines TP2 (the i-th second touch signal line TP2 and the (i+1)-th second touch signal line TP2), the length of the i-th second touch signal line TP2 may be less than the length of the (i+1)-th second touch signal line TP2, and the resistance value of the impedance unit 501 connected to the i-th second touch signal line TP2 may be greater than the resistance value of the impedance unit 501 connected to the (i+1)-th second touch signal line TP2. This allows the impedance of the i-th second touch signal line TP2 to be the same as or similar to the impedance of the (i+1)-th second touch signal line TP2, reducing the impedance difference between different second touch signal lines TP2 and improving the uniformity of touch input.

[0058] Thus, by connecting the second touch signal line TP2 in series with the impedance unit 501, the impedance of the second touch signal line TP2 can be increased, making the impedance of the second ground line D2 less than the impedance of the second touch signal line TP2, thereby reducing the impact of static electricity on the touch signal line and its connected touch electrodes, and improving the electrostatic protection capability of the display panel.

[0059] In some embodiments, the impedance unit 501 includes, but is not limited to, a resistor.

[0060] See also Figure 5 In some specific examples, an impedance unit 501 may optionally include at least two resistors R connected in parallel. That is, a second touch signal line TP2 may be electrically connected to at least two resistors R connected in parallel.

[0061] Thus, on the one hand, the second touch signal line TP2 is electrically connected to at least two resistors in parallel. When static electricity is transmitted to the second touch signal line TP2, the at least two resistors in parallel can act as a voltage divider, reducing the impact of static electricity on the touch electrodes and touch signal lines. On the other hand, the impedance of the second touch signal line TP2 can be increased, allowing static electricity to be preferentially conducted to the second grounding line D2 with lower impedance, further avoiding the impact of static electricity on the touch electrodes and touch signal lines.

[0062] Figure 6 This is a cross-sectional schematic diagram of a display panel provided in an embodiment of this application. Figure 6 As shown, according to some embodiments of this application, optionally, the display panel 10 may include a first substrate 61 and a driving device layer 62 stacked together. The driving device layer 62 may include an active layer 621 and at least one metal layer M. The impedance unit 501 may be located in the active layer 621 or the metal layer M, and the second touch signal line TP2 may be electrically connected to the impedance unit 501 through the first via h1. Figure 6 The impedance unit 501 is located in the active layer 621 as an example.

[0063] Since the active layer 621 is made of semiconductor material, which has a large impedance, when the impedance unit 501 is prepared using the semiconductor material in the active layer 621, the impedance of the impedance unit 501 formed under the same volume is large, and the volume of the impedance unit 501 formed under the same impedance is small. Therefore, the impedance of the second touch signal line TP2 can be significantly increased or the volume of the impedance unit 501 can be reduced.

[0064] Figure 7 This is another structural schematic diagram of the display panel provided in an embodiment of this application. For example... Figure 7As shown, according to some embodiments of this application, optionally, the first grounding wire D1 may include a first sub-grounding wire GND1 and a second sub-grounding wire GU1. In some examples, for instance, at least a portion of the trace of the first sub-grounding wire GND1 may be arranged around the display area AA, and the first sub-grounding wire GND1 may serve as a shield. For instance, the second sub-grounding wire GU1 may be arranged between two signal lines, and the second sub-grounding wire GU1 may serve to prevent signal crosstalk.

[0065] The first transfer unit 111 may include a first sub-transfer unit 701 and a second sub-transfer unit 702. The first sub-transfer unit 701 may be electrically connected to the first sub-grounding wire GND1, and the second sub-transfer unit 702 may be electrically connected to the second sub-grounding wire GU1.

[0066] The first bonding pad 121 may include a first sub-bonding pad 703 and a second sub-bonding pad 704. The second ground line D2 may include a third sub-ground line GND2 and a fourth sub-ground line GU2. The first sub-transfer unit 701 and the first sub-bonding pad 703 can be electrically connected via the third sub-ground line GND2 located in the non-display area NA, and the second sub-transfer unit 702 and the second sub-bonding pad 704 can be electrically connected via the fourth sub-ground line GU2 located in the non-display area NA.

[0067] Among them, the impedance of the third sub-grounding line GND2 can be less than or equal to the impedance of the fourth sub-grounding line GU2, and the impedance of the fourth sub-grounding line GU2 can be less than the impedance of the second touch signal line TP2.

[0068] like Figure 7 As shown, in some examples, the transition area 11 may include multiple second transition units 112, and the bonding area 12 may include multiple second bonding pads 122. The multiple second transition units 112 and the multiple second bonding pads 122 can be electrically connected through multiple second touch signal lines TP2. For example, the cross-sectional areas of the multiple second touch signal lines TP2 may be equal but their lengths may be different; therefore, the impedances of the multiple second touch signal lines TP2 may be different. Along the second direction X, the first sub-transition unit 701, the multiple second transition units 112, and the second sub-transition unit 702 may be arranged sequentially. The first sub-transition unit 701 may be close to the edge of the display panel, and the second sub-transition unit 702 may be close to the center line of the display panel. The multiple second transition units 112 may be located between the first sub-transition unit 701 and the second sub-transition unit 702.

[0069] The impedance of the third sub-ground line GND2 can be less than or equal to the impedance of the fourth sub-ground line GU2, and the impedance of the fourth sub-ground line GU2 can be less than the impedance of each of the second touch signal lines TP2. For example, the impedance of the fourth sub-ground line GU2 can be less than the impedance of the longest second touch signal line TP2.

[0070] Thus, since the impedance of the third sub-grounding line GND2 and the fourth sub-grounding line GU2 are both less than the impedance of the second touch signal line TP2, the static electricity in the display panel will be preferentially released through the line where the third sub-grounding line GND2 and / or the line where the fourth sub-grounding line GU2 are located, which have relatively lower impedance. This reduces the impact of static electricity on the touch signal line and the touch electrodes it is connected to, and improves the electrostatic protection capability of the display panel.

[0071] In other embodiments, the impedance of the fourth sub-grounding line GU2 may be less than or equal to the impedance of the third sub-grounding line GND2, and the impedance of the third sub-grounding line GND2 may be less than the impedance of the second touch signal line TP2. That is, the impedance relationship between the third sub-grounding line GND2 and the fourth sub-grounding line GU2 may be reversed, and this application does not limit this.

[0072] Figure 8 This is a size comparison diagram of the first sub-transfer unit, the second sub-transfer unit, and the second transfer unit in the display panel provided in an embodiment of this application. For example... Figure 8 As shown, according to some embodiments of this application, optionally, the size of the first sub-transfer unit 701 may be greater than or equal to the size of the second sub-transfer unit 702, and the size of the second sub-transfer unit 702 may be greater than the size of the second transfer unit 112.

[0073] Figure 8 For example, taking the first sub-transfer unit 701, the second sub-transfer unit 702, and the second transfer unit 112 as transfer pads for illustration, it can be understood that when the first sub-transfer unit 701, the second sub-transfer unit 702, and the second transfer unit 112 are transfer holes (vias), the size of the first sub-transfer unit 701 can be greater than or equal to the size of the second sub-transfer unit 702, and the size of the second sub-transfer unit 702 can be greater than the size of the second transfer unit 112.

[0074] Thus, since the dimensions of the first sub-transfer unit 701 and the second sub-transfer unit 702 are both larger than the dimensions of the second transfer unit 112, that is, the conductive area (cross-sectional area) of the first sub-transfer unit 701 and the conductive area of ​​the second sub-transfer unit 702 are both larger than the conductive area of ​​the second transfer unit 112, the impedances of the first sub-transfer unit 701 and the second sub-transfer unit 702 are both smaller than the impedance of the second transfer unit 112. This allows static electricity to be preferentially conducted to the first sub-transfer unit 701 and / or the second sub-transfer unit 702 with lower impedance, further avoiding the impact of static electricity on the touch electrodes and touch signal lines.

[0075] In other embodiments, the size relationship between the first sub-transfer unit 701 and the second sub-transfer unit 702 can be reversed. That is, the size of the second sub-transfer unit 702 can be greater than or equal to the size of the first sub-transfer unit 701, and the size of the first sub-transfer unit 701 can be greater than the size of the second sub-transfer unit 702.

[0076] According to some embodiments of this application, optionally, the cross-sectional area of ​​the third sub-grounding wire GND2 can be greater than the cross-sectional area of ​​the fourth sub-grounding wire GU2, and the cross-sectional area of ​​the fourth sub-grounding wire GU2 can be greater than the cross-sectional area of ​​the second touch signal line TP2.

[0077] For example, in some specific examples, the thickness of the third sub-ground line GND2 and the thickness of the fourth sub-ground line GU2 can both be the same as the thickness of the second touch signal line TP2, but the line width of the third sub-ground line GND2 and the line width of the fourth sub-ground line GU2 can both be greater than the line width of the second touch signal line TP2. In other specific examples, the line width of the third sub-ground line GND2 and the line width of the fourth sub-ground line GU2 can both be the same as the line width of the second touch signal line TP2, but the thickness of the third sub-ground line GND2 and the thickness of the fourth sub-ground line GU2 can both be greater than the thickness of the second touch signal line TP2. In still other specific examples, the line width of the third sub-ground line GND2 and the line width of the fourth sub-ground line GU2 can both be greater than the line width of the second touch signal line TP2, and the thickness of the third sub-ground line GND2 and the thickness of the fourth sub-ground line GU2 can both be greater than the thickness of the second touch signal line TP2.

[0078] Thus, by making the cross-sectional areas of the third sub-grounding line GND2 and the fourth sub-grounding line GU2 larger than the cross-sectional area of ​​the second touch signal line TP2, the impedance of the third sub-grounding line GND2 and the fourth sub-grounding line GU2 can be made smaller than the impedance of the second touch signal line TP2. Therefore, static electricity in the display panel will be preferentially released through the line containing the third sub-grounding line GND2 and / or the line containing the fourth sub-grounding line GU2, which has a relatively lower impedance. This reduces the impact of static electricity on the touch signal line and the touch electrodes connected to it, and improves the electrostatic protection capability of the display panel.

[0079] Figure 9 This is a schematic diagram of another partial structure of a display panel provided in an embodiment of this application. For example... Figure 9 As shown, according to some embodiments of this application, optionally, the display panel 10 may further include an electrostatic discharge (ESD) protection circuit 90, a first power supply voltage signal line VGH, and a second power supply voltage signal line VGL. The ESD protection circuit 90 may be electrically connected to the second adapter unit 112, the first power supply voltage signal line VGH, and the second power supply voltage signal line VGL. The ESD protection circuit 90 may be used to transfer static electricity on the second adapter unit 112 to at least one of the first power supply voltage signal line VGH and the second power supply voltage signal line VGL. For example, when the static electricity on the second adapter unit 112 is positive, it may be transferred to the first power supply voltage signal line VGH for ESD discharge. For example, when the static electricity on the second adapter unit 112 is negative, it may be transferred to the second power supply voltage signal line VGL for ESD discharge.

[0080] Thus, by connecting the second adapter unit 112 to the electrostatic protection circuit 90, the static electricity on the second adapter unit 112 can be transferred to at least one of the first power supply voltage signal line VGH and the second power supply voltage signal line VGL, thereby further avoiding the impact of static electricity on the touch electrodes and touch signal lines and improving the electrostatic protection capability of the display panel.

[0081] Figure 10 This is a circuit diagram of an electrostatic discharge (ESD) protection circuit in a display panel provided in an embodiment of this application. Figure 10 As shown, according to some embodiments of this application, optionally, the electrostatic discharge protection circuit 90 may include a first switching unit 110 and a second switching unit 120, wherein:

[0082] Both the control terminal and the first terminal of the first switching unit 110 can be electrically connected to the first power supply voltage line VGH, and the second terminal of the first switching unit 110 can be electrically connected to the second adapter unit 112.

[0083] The control terminal of the second switching unit 120 and the first terminal of the second switching unit 120 can both be electrically connected to the second adapter unit 112, and the second terminal of the second switching unit 120 is electrically connected to the second power supply voltage line VGL.

[0084] When electrostatic discharge occurs on the display panel, the static electricity reaches the first node N1. If the potential of the first node N1 is higher than the potential of the first power supply voltage line VGH, the first switch unit 110 is turned on and the second switch unit 120 is turned off. The static electricity is transmitted to the first power supply voltage line VGH through the turned-on first switch unit 110, thereby realizing the static discharge and protecting the circuit where the second transfer unit 112 is located.

[0085] When electrostatic discharge occurs on the display panel, the static electricity reaches the first node N1. If the potential of the first node N1 is lower than the potential of the second power supply voltage line VGL, the first switch unit 110 is turned off and the second switch unit 120 is turned on. The static electricity is transmitted to the second power supply voltage line VGL through the turned-on second switch unit 120, thereby realizing the static discharge and protecting the circuit where the second transfer unit 112 is located.

[0086] See also Figure 10 In some specific embodiments, optionally, the first switching unit 110 may include a first transistor T1 and a second transistor T2, and the second switching unit 120 may include a third transistor T3 and a fourth transistor T4, wherein:

[0087] The gate and the first terminal of the first transistor T1 can both be electrically connected to the first power supply voltage line VGH.

[0088] The gate of the second transistor T2 is electrically connected to the first power supply voltage line VGH, the first terminal of the second transistor T2 is electrically connected to the second terminal of the first transistor T1, and the second terminal of the second transistor T2 is electrically connected to the second transfer unit 112.

[0089] The gate of the third transistor T3 and the first terminal of the third transistor T3 can both be electrically connected to the second transfer unit 112.

[0090] The gate of the fourth transistor T4 is electrically connected to the second transfer unit 112, the first terminal of the fourth transistor T4 is electrically connected to the second terminal of the third transistor T3, and the second terminal of the fourth transistor T4 is electrically connected to the second power supply voltage line VGL.

[0091] When electrostatic discharge occurs on the display panel, the static electricity reaches the first node N1. If the potential of the first node N1 is higher than the potential of the first power supply voltage line VGH, then the first transistor T1 and the second transistor T2 are turned on, and the third transistor T3 and the fourth transistor T4 are turned off. The static electricity is transmitted to the first power supply voltage line VGH through the turned-on first transistor T1 and the second transistor T2, thereby realizing the static discharge and protecting the circuit where the second transfer unit 112 is located.

[0092] When electrostatic discharge occurs on the display panel, the static electricity reaches the first node N1. If the potential of the first node N1 is lower than the potential of the second power supply voltage line VGL, the first transistor T1 and the second transistor T2 are turned off, and the third transistor T3 and the fourth transistor T4 are turned on. The static electricity is transmitted to the second power supply voltage line VGL through the turned-on third transistor T3 and fourth transistor T4, thereby realizing the static discharge and protecting the circuit where the second transfer unit 112 is located.

[0093] In some examples, the first transistor T1, the second transistor T2, the third transistor T3, and the fourth transistor T4 can all be P-type transistors.

[0094] Figure 11 Another circuit diagram of the electrostatic discharge (ESD) protection circuit in a display panel provided in an embodiment of this application. For example... Figure 11 As shown, according to some other embodiments of this application, optionally, the electrostatic discharge protection circuit 90 may include a first transistor T1, a second transistor T2, a third transistor T3, and a fourth transistor T4.

[0095] The gate of the first transistor T1 is electrically connected to the first power supply voltage line VGH, and the first terminal of the first transistor T1 is electrically connected to the first power supply voltage line VGH.

[0096] The gate of the second transistor T2 and the first terminal of the second transistor T2 are both electrically connected to the second terminal of the first transistor T1, and the second terminal of the second transistor T2 is electrically connected to the second transfer unit 112.

[0097] The gate and the first terminal of the third transistor T3 are both electrically connected to the second transfer unit 112.

[0098] The gate and first terminal of the fourth transistor T4 are both electrically connected to the second terminal of the third transistor T3, and the second terminal of the fourth transistor T4 is electrically connected to the second power supply voltage line VGL.

[0099] When electrostatic discharge occurs on the display panel, the static electricity reaches the first node N1. If the potential of the first node N1 is higher than the potential of the first power supply voltage line VGH, then the first transistor T1 and the second transistor T2 are turned on, and the third transistor T3 and the fourth transistor T4 are turned off. The static electricity is transmitted to the first power supply voltage line VGH through the turned-on first transistor T1 and the second transistor T2, thereby realizing the static discharge and protecting the circuit where the second transfer unit 112 is located.

[0100] When electrostatic discharge occurs on the display panel, the static electricity reaches the first node N1. If the potential of the first node N1 is lower than the potential of the second power supply voltage line VGL, the first transistor T1 and the second transistor T2 are turned off, and the third transistor T3 and the fourth transistor T4 are turned on. The static electricity is transmitted to the second power supply voltage line VGL through the turned-on third transistor T3 and fourth transistor T4, thereby realizing the static discharge and protecting the circuit where the second transfer unit 112 is located.

[0101] In some examples, the first transistor T1, the second transistor T2, the third transistor T3, and the fourth transistor T4 can all be P-type transistors.

[0102] See also Figure 9 According to some embodiments of this application, optionally, the transition area 11 may include a plurality of second transition units 112 arranged at intervals along a first direction X. One of the second transition units 112 may be electrically connected to a first touch signal line TP1.

[0103] The electrostatic protection circuit 90 can be located in the transition area 11, specifically between two adjacent second transition units 112 along the first direction X.

[0104] In this way, by utilizing the existing active layer and metal layer in the transition area 11 to prepare the electrostatic protection circuit 90, the materials and space can be fully utilized. At the same time, it provides good electrostatic protection for the circuit where the second transition unit 112 is located, avoiding the impact of static electricity on the touch electrodes and touch signal lines, and improving the electrostatic protection capability of the display panel.

[0105] Figure 12 This is a schematic diagram of another partial structure of a display panel provided in an embodiment of this application. For example... Figure 1 and Figure 12As shown, according to some other embodiments of this application, optionally, the display area AA, the transition area 11, and the bonding area 12 can be arranged sequentially along the second direction Y. Along the second direction Y, the electrostatic discharge (ESD) protection circuit 90 can be located between the second transition unit 112 and the second bonding pad 122, and the ESD protection circuit 90 can be electrically connected to the second touch signal line TP2. That is, along the second direction Y, the ESD protection circuit 90 can be located between the transition area 11 and the bonding area 12. In some examples, the first power supply voltage line VGH and the second power supply voltage line VGL can both extend along the first direction X, and the second touch signal line TP2 can extend along the second direction Y. Multiple ESD protection circuits 90 can be arranged sequentially along the first direction X and electrically connected to the first power supply voltage line VGH and the second power supply voltage line VGL. The first transistor T1, the second transistor T2, the third transistor T3, and the fourth transistor T4 in each ESD protection circuit 90 can be arranged sequentially along the first direction X.

[0106] In this way, by utilizing the existing active layer and metal layer in the area between the transition area 11 and the bonding area 12 to prepare the electrostatic protection circuit 90, the full utilization of materials and space can be achieved. At the same time, it provides better electrostatic protection for the circuit where the second transition unit 112 is located, avoiding the impact of static electricity on the touch electrodes and touch signal lines, and improving the electrostatic protection capability of the display panel.

[0107] According to some embodiments of this application, the display panel 10 may optionally be an in-cell touch panel. The following is a detailed description of an example where the display panel 10 is an in-cell touch panel.

[0108] Figure 13 This is another cross-sectional view of the display panel provided in an embodiment of this application. (See diagram below.) Figure 13 As shown, according to some embodiments of this application, optionally, the display panel 10 may include an array substrate 1210 and an encapsulation substrate 1220. The array substrate 1210 may include a first substrate 61, a driving device layer 62, and a light-emitting layer 1213 stacked together. The encapsulation substrate 1220 may include a second substrate 1221 and a touch function layer 1222 stacked together. The touch function layer 1222 may be located between the first substrate 61 and the second substrate 1221, and the touch function layer 1222 may have a first touch signal line TP1 and a touch electrode.

[0109] Figure 14 This is a partial planar schematic diagram of the array substrate and the packaging substrate in the display panel provided in an embodiment of this application. (In conjunction with...) Figure 13 and Figure 14As shown, in the transition area 11, the array substrate 1210 may be provided with a first touch pad P1 and a first ground pad P2. The first touch pad P1 can be electrically connected to the second touch signal line TP2, and the first ground pad P2 is electrically connected to the second ground line D2. In the transition area 11, the package substrate 1220 is provided with a second touch pad P3 and a second ground pad P4. The second touch pad P3 is electrically connected to the first touch signal line TP1, and the second touch pad P3 overlaps with the first touch pad P1. The second ground pad P4 is electrically connected to the first ground line D1, and the first ground pad P2 and the second ground pad P4 can overlap. The first transition unit 111 can be, for example, the first ground pad P2, and the second transition unit 112 can be, for example, the first touch pad P1.

[0110] The impedance of the second grounding wire D2 can be less than the impedance of the second touch signal line TP2. Because the impedance of the second grounding wire D2 is less than that of the second touch signal line TP2, static electricity in the embedded touch display panel will preferentially be released through the line containing the relatively lower impedance second grounding wire D2. This reduces the impact of static electricity on the touch signal line and its connected touch electrodes, improving the electrostatic discharge protection capability of the embedded touch display panel.

[0111] Figure 15 This is a partial planar schematic diagram of the array substrate in a display panel provided in an embodiment of this application. (In conjunction with...) Figure 13 and Figure 15 As shown, according to some embodiments of this application, optionally, the first touch pad P1 may be located on the side of the first substrate 61 facing the second substrate 1221. The driving device layer 62 may extend between two adjacent first touch pads P1 located in the transition area 11. That is, the driving device layer 62 may extend into the gap between any two adjacent first touch pads P1. An electrostatic discharge protection circuit 90 may be disposed in the driving device layer 62 between two adjacent first touch pads P1.

[0112] In this way, by using the driving device layer 62 in the transition area 11 to prepare the electrostatic protection circuit 90, the materials and space can be fully utilized. At the same time, it provides good electrostatic protection for the circuit where the first touch pad P1 is located, avoiding the impact of static electricity on the touch electrode and touch signal line, and improving the electrostatic protection capability of the embedded touch display panel.

[0113] Figure 16 This is another partial planar schematic diagram of the array substrate in the display panel provided in the embodiments of this application. Figure 17 This is another cross-sectional schematic diagram of the display panel provided in an embodiment of this application. (In conjunction with...) Figure 16 and Figure 17 As shown, according to some other embodiments of this application, optionally, the driving device layer 62 may extend to the transition area 11. The first touch pad P1 may be located on the side of the driving device layer 62 in the transition area 11 opposite to the first substrate 61. That is, along the thickness direction Z of the display panel, the first touch pad P1 may be located above the driving device layer 62. An electrostatic discharge (ESD) protection circuit 90 may be disposed within the driving device layer 62 located in the transition area 11.

[0114] In this way, by using the driving device layer 62 in the transition area 11 to prepare the electrostatic protection circuit 90, the materials and space can be fully utilized. At the same time, it provides good electrostatic protection for the circuit where the first touch pad P1 is located, avoiding the impact of static electricity on the touch electrode and touch signal line, and improving the electrostatic protection capability of the embedded touch display panel.

[0115] Figure 18 This is another partial planar schematic diagram of the array substrate in the display panel provided in the embodiments of this application. According to some other embodiments of this application, optionally, along the second direction Y, a driving device layer 62 is provided in the target area P between the first touch pad P1 and the second bonding pad 122, and an electrostatic protection circuit 90 may be provided in the driving device layer 62 of the target area P.

[0116] Thus, by utilizing the driving device layer 62 in the target area P between the transition area 11 and the bonding area 12 to prepare the electrostatic protection circuit 90, full use of materials and space can be achieved. At the same time, it provides good electrostatic protection for the circuit where the first touch bonding pad P1 is located, avoiding the impact of static electricity on the touch electrode and touch signal line, and improving the electrostatic protection capability of the embedded touch display panel.

[0117] According to some embodiments of this application, optionally, the display panel 10 may adopt a TPOP (TP on panel) structure, that is, the touch function layer may be formed on top of the encapsulation layer. The following provides a detailed description of an example where the display panel 10 is a TPOP display panel.

[0118] Figure 19 This is another cross-sectional schematic diagram of the display panel provided in an embodiment of this application. Figure 20 This is a partial planar schematic diagram of a display panel provided in an embodiment of this application. (In conjunction with...) Figure 19 and Figure 20As shown, according to some embodiments of this application, optionally, the display panel 10 includes a first substrate 61, a driving device layer 62, a light-emitting layer 63, an encapsulation layer 64, and a touch function layer 65. The first substrate 61 may be located in both the display area AA and the non-display area NA. Exemplarily, the first substrate 61 may be a flexible substrate made of materials such as polyethersulfone (PES), polyacrylate (PAR), polyetherimide (PEI), polyethylene naphthalate (PEN), polyethylene terephthalate (PET), polyphenylene sulfide (PPS), polyarylate, polyimide (PI), polycarbonate (PC), or cellulose acetate propionate (CAP), or it may be a rigid substrate made of materials such as glass.

[0119] The driving device layer 62 may be located on one side of the first substrate 61, and the driving device layer 62 may be used to mount electronic devices such as thin-film transistors (TFTs). The light-emitting layer 63 may be located on the side of the driving device layer 62 facing away from the first substrate 61. It is understood that the light-emitting layer 63 is located in the display area AA. Exemplarily, the light-emitting layer 63 includes, but is not limited to, an organic light-emitting layer 63, that is, the material of the light-emitting layer 63 may be an organic light-emitting material. The encapsulation layer 64 may cover the light-emitting layer 63 and at least a portion of the non-display area NA. The encapsulation layer 64 may be a thin-film encapsulation layer, specifically including a first inorganic encapsulation layer 641, an organic encapsulation layer 642, and a second inorganic encapsulation layer 643 sequentially disposed in a direction away from the first substrate 61, and the encapsulation layer 64 may be used to prevent water and oxygen from corroding the light-emitting device.

[0120] The non-display area NA is also provided with a first barrier 2001 and a second barrier 2002. The first barrier 2001 is used to define the boundary of the organic encapsulation layer 642 in the encapsulation layer 64. The first inorganic encapsulation layer 641 and the second inorganic encapsulation layer 643 can extend to the second barrier 2002 to further enhance the effect of the encapsulation layer 64 in blocking water and oxygen.

[0121] The touch function layer 65 can be located on the side of the encapsulation layer 64 opposite to the first substrate 61, and the touch function layer 65 can extend from the display area AA to the transition area 11. The touch function layer 65 can be provided with a first touch signal line TP1 and touch electrodes.

[0122] The transition area 11 is provided with a first transition hole K1 and a second transition hole K2. The first transition hole K1 can be used to connect the first ground wire D1 and the second ground wire D2, and the second transition hole K2 can be used to connect the first touch signal line TP1 and the second touch signal line TP2. The first transition unit 111 can be, for example, the first transition hole K1, and the second transition unit 112 can be, for example, the second transition hole K2.

[0123] The impedance of the second grounding wire D2 can be less than the impedance of the second touch signal line TP2. Because the impedance of the second grounding wire D2 is less than that of the second touch signal line TP2, static electricity in the TPOP display panel will preferentially be released through the line containing the relatively lower impedance second grounding wire D2. This reduces the impact of static electricity on the touch signal line and its connected touch electrodes, improving the electrostatic protection capability of the TPOP display panel.

[0124] Combination Figure 19 and Figure 20 As shown, according to some embodiments of this application, optionally, the transition area 11 and the bonding area 12 are provided with a driving device layer 62. The driving device layer 62 includes a plurality of stacked metal layers and an insulating layer between any two metal layers. The film layer where the second touch signal line TP2 is located can reuse one of the metal layers in the driving device layer 62.

[0125] Thus, by reusing one of the metal layers in the driving device layer 62 to prepare the second touch signal line TP2, the number of film layers can be reduced, the thickness of the display panel can be reduced, and it is beneficial for thinner and lighter designs.

[0126] Combination Figure 19 and Figure 20 As shown, according to some embodiments of this application, optionally, the electrostatic discharge (ESD) protection circuit 90 is disposed in the drive device layer 62 of the transition area 11 and the bonding area 12. For example, along the second direction Y, a drive device layer 62 is disposed in the target area P between the second transition hole K2 and the second bonding pad 122, and the ESD protection circuit 90 may be disposed in the drive device layer 62 of the target area P.

[0127] Thus, by utilizing the driving device layer 62 in the target area P between the transition area 11 and the bonding area 12 to prepare the electrostatic protection circuit 90, full utilization of materials and space can be achieved. At the same time, it provides good electrostatic protection for the circuit where the second transition hole K2 is located, avoiding the impact of static electricity on the touch electrode and touch signal line, and improving the electrostatic protection capability of the TPOP display panel.

[0128] According to some embodiments of this application, the display panel 10 may optionally be a self-contained touch display panel. The following provides a detailed description of an example where the display panel 10 is a self-contained touch display panel.

[0129] Figure 21 This is yet another planar schematic diagram of a display panel provided in an embodiment of this application. For example... Figure 21As shown, according to some embodiments of this application, optionally, the display panel 10 may include a plurality of touch electrodes 210 and a plurality of first touch signal lines TP1, wherein the plurality of first touch signal lines TP1 are electrically connected to the plurality of touch electrodes 210 in a one-to-one correspondence. The touch electrode 210 receives touch driving signals through the corresponding first touch signal line TP1, and transmits the touch sensing signals generated by the same first touch signal line TP1 back to the touch chip.

[0130] According to some embodiments of this application, the display panel 10 may optionally be a capacitive touch display panel. A detailed description of an example where the display panel 10 is a capacitive touch display panel is provided below.

[0131] Figure 22 This is yet another planar schematic diagram of a display panel provided in an embodiment of this application. For example... Figure 22 As shown, according to some embodiments of this application, optionally, the display panel 10 may include a plurality of first touch electrodes 221 and a plurality of second touch electrodes 222, wherein the first touch electrodes 221 and the second touch electrodes 222 are insulated from each other. The first touch electrodes 221 may include a plurality of electrically connected first electrode units d1 arranged along a first direction X. The second touch electrodes 222 may include a plurality of electrically connected second electrode units d2 arranged along a second direction Y. The first touch electrodes 221 and the second touch electrodes 222 may be electrically connected to different first touch signal lines TP1. In some examples, the first touch signal line TP1 may include a touch driving signal line TP11 and a touch sensing signal line TP12. The first touch electrodes 221 may be electrically connected to the touch driving signal line TP11, and the second touch electrodes 222 may be electrically connected to the touch sensing signal line TP12.

[0132] Based on the display panel provided in the above embodiments, this application also provides a display device, including the display panel provided in this application. Please refer to... Figure 23 , Figure 23 This is a schematic diagram of a display device provided in an embodiment of this application. Figure 23 The provided display device 1000 includes the display panel 10 provided in any of the above embodiments of this application. Figure 23 The embodiments use a mobile phone as an example to describe the display device 1000. It is understood that the display device provided in the embodiments of this application can be other display devices with display functions, such as wearable products, computers, televisions, and in-vehicle display devices. This application does not impose specific limitations on these. The display device provided in the embodiments of this application has the beneficial effects of the display panel 10 provided in the embodiments of this application. For details, please refer to the specific descriptions of the display panel 10 in the above embodiments. These descriptions will not be repeated here.

[0133] It should be understood that the specific circuit structures and cross-sectional structures of the display panels provided in the accompanying drawings of the embodiments of this application are merely examples and are not intended to limit this application. Furthermore, the above embodiments provided in this application can be combined with each other unless there is contradiction.

[0134] It should be clarified that the various embodiments in this specification are described in a progressive manner. Similar or identical parts between embodiments can be referred to interchangeably. Each embodiment focuses on describing the differences from other embodiments. According to the embodiments described above, these embodiments do not exhaustively describe all details, nor do they limit this application to only the specific embodiments described. Obviously, many modifications and variations can be made based on the above description. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this application, thereby enabling those skilled in the art to make good use of this application and modifications based on it. This application is limited only by the claims and their full scope and equivalents.

[0135] Those skilled in the art will understand that the above embodiments are exemplary and not restrictive. Different technical features appearing in different embodiments can be combined to achieve beneficial effects. Based on a study of the drawings, specification, and claims, those skilled in the art should be able to understand and implement other variations of the disclosed embodiments. In the claims, the term "comprising" does not exclude other structures; the quantity refers to "one" but does not exclude multiple; the terms "first" and "second" are used to identify names and not to indicate any particular order. Any reference numerals in the claims should not be construed as limiting the scope of protection. The appearance of certain technical features in different dependent claims does not mean that these technical features cannot be combined to achieve beneficial effects.

Claims

1. A display panel, characterized in that, The display panel includes a display area and a non-display area located on at least one side of the display area. The non-display area includes a transition area and a bonding area. The transition area is located on the side of the bonding area closer to the display area. The transition area includes: The first adapter unit is electrically connected to the first grounding wire in the display area; The second adapter unit is electrically connected to the first touch signal line in the display area; The bonding area includes a first bonding pad and a second bonding pad, which are used to connect a flexible circuit board or a driver chip. The first adapter unit is electrically connected to the first bonding pad via a second ground wire located in the non-display area, and the second adapter unit is electrically connected to the second bonding pad via a second touch signal line located in the non-display area. Wherein, the impedance of the second grounding wire is less than the impedance of the second touch signal wire; The size of the first adapter unit is larger than that of the second adapter unit, and the cross-sectional area of ​​the second grounding wire is larger than that of the second touch signal line; the display panel also includes an impedance unit, which is connected in series with the second touch signal line.

2. The display panel according to claim 1, characterized in that, The first adapter unit includes multiple sub-adapter units arranged at intervals. The multiple sub-adapter units are electrically connected to the second bonding pad after being connected in series or in parallel through at least one second grounding wire.

3. The display panel according to claim 1, characterized in that, The display panel includes a first substrate and a driving device layer stacked together. The driving device layer includes an active layer and at least one metal layer. The impedance unit is located in the active layer or the metal layer. The second touch signal line is electrically connected to the impedance unit through a first via.

4. The display panel according to claim 1, characterized in that, The first grounding wire includes a first sub-grounding wire and a second sub-grounding wire; The first transfer unit includes a first sub-transfer unit and a second sub-transfer unit. The first sub-transfer unit is electrically connected to the first sub-grounding wire, and the second sub-transfer unit is electrically connected to the second sub-grounding wire. The first bonding pad includes a first sub-bonding pad and a second sub-bonding pad, the second ground wire includes a third sub-ground wire and a fourth sub-ground wire, the first sub-transfer unit is electrically connected to the first sub-bonding pad through the third sub-ground wire located in the non-display area, and the second sub-transfer unit is electrically connected to the second bonding pad through the fourth sub-ground wire located in the non-display area; The impedance of the third sub-grounding wire is less than or equal to the impedance of the fourth sub-grounding wire, and the impedance of the fourth sub-grounding wire is less than the impedance of the second touch signal line.

5. The display panel according to claim 4, characterized in that, The size of the first sub-transfer unit is greater than or equal to the size of the second sub-transfer unit, and the size of the second sub-transfer unit is greater than the size of the second transfer unit.

6. The display panel according to claim 4, characterized in that, The cross-sectional area of ​​the third sub-grounding wire is greater than that of the fourth sub-grounding wire, and the cross-sectional area of ​​the fourth sub-grounding wire is greater than that of the second touch signal wire.

7. The display panel according to claim 1, characterized in that, The display panel further includes an electrostatic discharge (ESD) protection circuit, a first power supply voltage signal line, and a second power supply voltage signal line. The ESD protection circuit is electrically connected to the second adapter unit, the first power supply voltage signal line, and the second power supply voltage signal line. The ESD protection circuit is used to transfer static electricity on the second adapter unit to at least one of the first power supply voltage signal line and the second power supply voltage signal line.

8. The display panel according to claim 7, characterized in that, The electrostatic discharge protection circuit includes a first switching unit and a second switching unit, wherein: The control terminal and the first terminal of the first switch unit are both electrically connected to the first power supply voltage line, and the second terminal of the first switch unit is electrically connected to the second adapter unit. The control terminal and the first terminal of the second switch unit are both electrically connected to the second adapter unit, and the second terminal of the second switch unit is electrically connected to the second power supply voltage line.

9. The display panel according to claim 8, characterized in that, The first switching unit includes a first transistor and a second transistor, and the second switching unit includes a third transistor and a fourth transistor, wherein: The gate and the first terminal of the first transistor are both electrically connected to the first power supply voltage line. The gate of the second transistor is electrically connected to the first power supply voltage line, the first terminal of the second transistor is electrically connected to the second terminal of the first transistor, and the second terminal of the second transistor is electrically connected to the second adapter unit. The gate of the third transistor and the first terminal of the third transistor are both electrically connected to the second transfer unit; The gate of the fourth transistor is electrically connected to the second transfer unit, the first terminal of the fourth transistor is electrically connected to the second terminal of the third transistor, and the second terminal of the fourth transistor is electrically connected to the second power supply voltage line.

10. The display panel according to claim 7, characterized in that, The electrostatic protection circuit includes: The first transistor has its gate electrically connected to the first power supply voltage line and its first electrode electrically connected to the first power supply voltage line. The second transistor has its gate and first terminal electrically connected to the second terminal of the first transistor, and its second terminal electrically connected to the second switching unit. The third transistor, wherein both its gate and its first terminal are electrically connected to the second switching unit; The fourth transistor has its gate and first terminal electrically connected to the second terminal of the third transistor, and the second terminal of the fourth transistor is electrically connected to the second power supply voltage line.

11. The display panel according to claim 7, characterized in that, The switching area includes a plurality of second switching units arranged at intervals along a first direction, and each second switching unit is electrically connected to a first touch signal line. The electrostatic protection circuit is located between two adjacent second transition units along the first direction.

12. The display panel according to claim 7, characterized in that, Along the second direction, the display area, the switching area, and the binding area are arranged sequentially; Along the second direction, the electrostatic discharge protection circuit is located between the second adapter unit and the second bonding pad, and the electrostatic discharge protection circuit is electrically connected to the second touch signal line.

13. The display panel according to claim 7, characterized in that, The display panel includes an array substrate and a packaging substrate. The array substrate includes a first substrate, a driving device layer and a light-emitting layer stacked together. The packaging substrate includes a second substrate and a touch function layer stacked together. The touch function layer is located between the first substrate and the second substrate, and the touch function layer is provided with a first touch signal line. In the transition area, the array substrate is provided with a first touch lap pad and a first ground lap pad. The first touch lap pad is electrically connected to the second touch signal line, and the first ground lap pad is electrically connected to the second ground line. In the transition area, the packaging substrate is provided with a second touch lap pad and a second ground lap pad. The second touch lap pad is electrically connected to the first touch signal line and overlaps with the first touch lap pad. The second ground lap pad is electrically connected to the first ground line. The first adapter unit includes the first grounding pad, and the second adapter unit includes the first touch pad.

14. The display panel according to claim 13, characterized in that, The first touch pad is located on the side of the first substrate facing the second substrate, the driving device layer extends between two adjacent second transition units located in the transition area, and the electrostatic protection circuit is disposed in the driving device layer between two adjacent second transition units.

15. The display panel according to claim 13, characterized in that, The driving device layer extends to the transition area, the first touch lap pad is located on the side of the driving device layer in the transition area away from the first substrate, and the electrostatic protection circuit is disposed in the driving device layer located in the transition area.

16. The display panel according to claim 13, characterized in that, Along the second direction, the display area, the switching area, and the binding area are arranged sequentially; Along the second direction, the target area between the second adapter unit and the second bonding pad is provided with the driving device layer, and the electrostatic protection circuit is provided in the driving device layer of the target area.

17. The display panel according to claim 13, characterized in that, The display panel includes: A first substrate, which is located in both the display area and the non-display area; A driving device layer, the driving device layer being located on one side of the first substrate; A light-emitting layer is located on the side of the driving device layer opposite to the first substrate, and the light-emitting layer is located in the display area; An encapsulation layer that covers the light-emitting layer and at least a portion of the non-display area; A touch function layer is located on the side of the encapsulation layer opposite to the first substrate. The touch function layer extends from the display area to the transition area, and the touch function layer is provided with the first touch signal line. The transition area is provided with a first transition hole and a second transition hole. The first transition hole is used to connect the first grounding wire and the second grounding wire, and the second transition hole is used to connect the first touch signal line and the second touch signal line. The first adapter unit includes the first adapter hole, and the second adapter unit includes the second adapter hole.

18. The display panel according to claim 17, characterized in that, The switching area and the bonding area are provided with the driving device layer, which includes a plurality of stacked metal layers and an insulating layer between any two of the metal layers. The film layer where the second touch signal line is located reuses one of the metal layers in the driving device layer.

19. The display panel according to claim 18, characterized in that, The electrostatic protection circuit is disposed in the driving device layer of the transition area and the bonding area.

20. The display panel according to claim 1, characterized in that, The display panel includes multiple touch electrodes and multiple first touch signal lines. The multiple first touch signal lines are electrically connected to the multiple touch electrodes. The touch electrodes receive touch driving signals through the corresponding first touch signal lines and transmit touch sensing signals generated by the same first touch signal line back to the touch chip.

21. The display panel according to claim 1, characterized in that, The display panel includes a plurality of first touch electrodes and a plurality of second touch electrodes, the first touch electrodes and the second touch electrodes being insulated from each other; the first touch electrodes include a plurality of first electrode units electrically connected to each other, the plurality of first electrode units being arranged along a first direction; the second touch electrodes include a plurality of second electrode units electrically connected to each other, the plurality of second electrode units being arranged along a second direction, the first direction and the second direction intersecting. The first touch electrode and the second touch electrode are electrically connected to different first touch signal lines.

22. A display device, characterized in that, Includes the display panel as described in any one of claims 1 to 21.

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