Display panel and display device

Abstract

The application discloses a display panel and a display device. The display panel comprises a signal line, an electrostatic conduction wire and an electrostatic discharge unit. The electrostatic conduction wire has a first end and a second end arranged oppositely. The first end is electrically connected with a first capacitor, and the second end is electrically connected with a second capacitor. A plurality of access points are arranged on the electrostatic conduction wire. The electrostatic discharge unit has a third end and a fourth end. The third end is electrically connected with a corresponding signal line, and the fourth end is electrically connected with a corresponding access point. The electrostatic discharge unit is used for discharging electrostatic on the corresponding signal line to the electrostatic conduction wire, and the electrostatic conduction wire is used for discharging electrostatic to the first capacitor and the second capacitor. The electrostatic on each signal line is discharged to the electrostatic conduction wire by the electrostatic discharge unit and consumed in the first capacitor and the second capacitor, so that the electrostatic on the signal line can be normally dredged. The electrostatic protection capability of the display panel can be enhanced without affecting the stability of the common electrode line signal, and the product reliability is improved.

Description

Technical Field

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

[0002] With the continuous development of display technology, electronic paper, such as bistable electrophoretic electronic paper, has been applied to all aspects of life due to its advantages such as readability under sunlight, low power consumption, and simple preparation. The substrate of electronic paper is usually a glass substrate. During the preparation process of electronic paper, the glass substrate comes into contact with photoresist, alignment brush, air, stage, human hands, packaging, etc., resulting in the accumulation of static electricity. Since a large number of scan lines and data lines are densely distributed on the glass substrate, these lines are the main carriers of static electricity accumulation. The static electricity accumulated on the lines can cause ESD (Electro-Static Discharge) damage to the device, thus seriously affecting the display effect of electronic paper. Summary of the Invention

[0003] Embodiments of this application provide a display panel and a display device to enhance the electrostatic discharge protection capability of the display panel and improve product reliability.

[0004] To address the aforementioned technical problems, embodiments of this application disclose the following technical solutions:

[0005] In a first aspect, a display panel is provided, the display panel comprising:

[0006] Multiple signal lines;

[0007] An electrostatic conductive trace has a first end and a second end that are arranged opposite to each other. The first end is electrically connected to a first capacitor and the second end is electrically connected to a second capacitor. The electrostatic conductive trace is also provided with multiple access points.

[0008] An electrostatic discharge unit has a third terminal and a fourth terminal. The third terminal is electrically connected to the corresponding signal line, and the fourth terminal is electrically connected to the corresponding access point on the electrostatic conduction line.

[0009] The electrostatic discharge unit is configured to discharge static electricity on the corresponding signal line to the electrostatic conduction trace, and the electrostatic conduction trace is configured to discharge static electricity to the first capacitor and the second capacitor.

[0010] In conjunction with the first aspect, the display panel includes a display area and a non-display area at least partially surrounding the display area, and the plurality of signal lines include scan lines extending along a first direction and data lines extending along a second direction, the first direction intersecting the second direction;

[0011] The electrostatic discharge unit is located in the non-display area. The electrostatic discharge unit includes a first electrostatic discharge unit and a second electrostatic discharge unit. The first electrostatic discharge unit is electrically connected to the corresponding scan line, and the second electrostatic discharge unit is electrically connected to the corresponding data line.

[0012] In conjunction with the first aspect, each scan line is electrically connected to a first electrostatic discharge unit, and each data line is electrically connected to a second electrostatic discharge unit.

[0013] Specifically, for any two adjacent scan lines, the two first electrostatic discharge units electrically connected to the two scan lines are disposed on both sides of the display area along the first direction; for any two adjacent data lines, the two second electrostatic discharge units electrically connected to the two data lines are disposed on the same side of the display area along the second direction.

[0014] In conjunction with the first aspect, each scan line is electrically connected to two first electrostatic discharge units, and the two first electrostatic discharge units are disposed at both ends of the scan line along the first direction. Each data line is electrically connected to two second electrostatic discharge units, and the two second electrostatic discharge units are disposed at both ends of the data line along the second direction.

[0015] In conjunction with the first aspect, the electrostatic conductive trace includes a first trace extending along the first direction, a second trace extending along the second direction, and a third trace, the third trace extending along the edge of the non-display area away from the display area, and both the first trace and the second trace being electrically connected to the third trace;

[0016] The two ends of the third trace, which are arranged opposite each other along the extension direction, are respectively configured as the first end and the second end. The access point on the second trace is configured to electrically connect to the fourth end of the corresponding first electrostatic discharge unit, and the access point on the first trace is configured to electrically connect to the fourth end of the corresponding second electrostatic discharge unit.

[0017] In conjunction with the first aspect, the display panel further includes a common electrode line disposed in the non-display area, at least a portion of the common electrode line surrounding the display area, and the third trace loop disposed on the side of the common electrode line away from the display area.

[0018] In conjunction with the first aspect, the display panel further includes a crack detection line, which has a signal input terminal and a signal output terminal along its extension direction. The signal input terminal is configured to receive a crack detection signal, and the signal output terminal is configured to output the crack detection signal. The shape offset of the crack detection signal output by the signal output terminal is configured to indicate the presence of a crack on the crack detection line.

[0019] In conjunction with the first aspect, the crack detection line and the third trace are the same trace, the signal input terminal is configured as one of the first terminal and the second terminal, and the signal output terminal is configured as the other of the first terminal and the second terminal.

[0020] In conjunction with the first aspect, the electrostatic discharge unit includes a first transistor, a second transistor, a third transistor, and a fourth transistor;

[0021] The gate, source, and source of the first transistor are all connected to the third terminal. The drain, gate, and source of the first transistor, the second transistor, the fourth transistor, and the third transistor are all connected to the source of the third transistor. The gate, drain, and fourth transistor are all connected to the fourth terminal.

[0022] In a second aspect, a display device is provided, comprising a display panel as described in any of the first aspects.

[0023] One of the above technical solutions has the following advantages or beneficial effects:

[0024] Compared with the prior art, the display panel of this application includes: signal lines, electrostatic discharge (ESD) conduction traces, and an ESD release unit. The ESD conduction traces have a first end and a second end disposed opposite to each other. The first end is electrically connected to a first capacitor, and the second end is electrically connected to a second capacitor. The ESD conduction traces also have multiple access points. The ESD release unit has a third end and a fourth end. The third end is electrically connected to a corresponding signal line, and the fourth end is electrically connected to a corresponding access point on the ESD conduction trace. The ESD release unit is configured to release static electricity from the corresponding signal line to the ESD conduction trace, and the ESD conduction trace is configured to release static electricity to the first capacitor and the second capacitor. The display panel provided in this application releases static electricity from each signal line to the ESD conduction trace through the ESD release unit, and the static electricity is ultimately consumed by the first capacitor and the second capacitor. This allows the static electricity on the signal lines to be properly discharged, enhancing the ESD protection capability of the display panel without affecting the signal stability of the common electrode line, thereby improving product reliability. Attached Figure Description

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

[0026] Figure 1 This is a schematic diagram illustrating the electrostatic protection principle of a TFT-LCD display panel.

[0027] Figure 2 This is a schematic diagram illustrating the electrostatic protection principle of a display panel according to an embodiment of this application;

[0028] Figure 3 for Figure 2 A schematic diagram of the structure of the first and second capacitors in the middle;

[0029] Figure 4 for Figure 2 Schematic diagram of the electrostatic discharge unit;

[0030] Figure 5 This is a schematic diagram of the equivalent circuit for crack detection in the embodiments of this application;

[0031] Figure 6 This is a schematic diagram of an example crack detection signal in an embodiment of this application.

[0032] Figure label:

[0033] 10 - Signal line; 11 - Scan line; 12 - Data line; 20 - Electrostatic discharge trace; 201 - First terminal; 202 - Second terminal; 203 - Access point; 21 - First trace; 22 - Second trace; 23 - Third trace; 30 - Electrostatic discharge unit; 301 - Third terminal; 302 - Fourth terminal; 31 - First transistor; 32 - Second transistor; 33 - Third transistor; 34 - Fourth transistor; 35 - First electrostatic discharge unit; 36 - Second electrostatic discharge unit; 40 - First capacitor; 41 - First metal dielectric layer; 42 - Insulating layer; 43 - Second metal dielectric layer; 50 - Second capacitor; 60 - Common electrode line; 70 - Crack detection line; 701 - Signal input terminal; 702 - Signal output terminal; 80 - Driver chip. Detailed Implementation

[0034] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0035] Please see Figure 1 , Figure 1 This diagram illustrates the electrostatic discharge (ESD) protection principle of a TFT-LCD display panel. The TFT (Thin Film Transistor)-LCD (Liquid Crystal Display) display panel includes multiple cross-arranged scan lines 11 and data lines 12. The scan lines 11 are connected to a driver chip (IC) 80 via fan-out scan lines 13, and are used to transmit scan signals to the connected pixel units. The data lines 12 are connected to the driver chip 80 via fan-out data lines 14, and are used to transmit display signals to the connected pixel units. Since scan line 11 and data line 12 are the main carriers of electrostatic discharge (ESD), when ESD occurs on scan line 11 or data line 12, the accumulated ESD will cause defects in the insulating layer to capture positive or negative charges, resulting in the IV curve of the TFT switch shifting towards the negative or positive voltage direction, respectively. If the IV curve shifts towards the positive voltage direction, the pixel writing capability is severely insufficient; if the IV curve shifts towards the negative voltage direction, the pixel retention capability is severely insufficient. Both situations will cause the TFT to lose its switching function and fail. Normally, to protect the TFT device from ESD, when ESD occurs on scan line 11 or data line 12, it will be released to the common electrode line 60 through its respective connected ESD release unit 30. Both ends of the common electrode line 60 are connected to the corresponding ports of the driver chip 80.

[0036] The applicant noted that the aforementioned TFT-LCD display panel causes an impact on the common electrode line 60 when releasing static electricity. However, electronic paper display devices are usually in a static display state, which requires high signal stability of the common electrode line 60. Therefore, in order to maintain the signal stability of the common electrode line 60, static electricity generally cannot be released to the common electrode line 60. In other words, the static electricity release method of the aforementioned TFT-LCD display panel is not applicable to electronic paper display devices. This will cause the static electricity on the electronic paper display device to be unable to be discharged and can only be consumed in the display panel. When encountering strong static electricity, it is easy to cause electrostatic discharge damage, affecting product reliability.

[0037] This application provides a display panel that uses an electrostatic discharge unit 30 to release static electricity from each signal line 10 to a newly added electrostatic conduction trace 20, and finally to the newly added first capacitor and second capacitor 50. This allows the static electricity on the signal lines 10 to be normally discharged without affecting the signal stability of the common electrode line 60, thereby solving at least part of the above-mentioned technical problems.

[0038] Please see Figure 2 , Figure 2 This illustration demonstrates the electrostatic discharge (ESD) protection principle of a display panel according to an embodiment of this application. The display panel provided in this embodiment includes multiple signal lines 10, an ESD conduction trace 20, and an ESD release unit 30. The ESD conduction trace 20 has a first end 201 and a second end 202 disposed opposite each other along its extension direction. The first end 201 is electrically connected to a first capacitor 40, and the second end 202 is electrically connected to a second capacitor 50. The ESD conduction trace 20 also has multiple access points 203. The ESD release unit 30 has a third end 301 and a fourth end 302. The third end 301 is electrically connected to the corresponding signal line 10, and the fourth end 302 is electrically connected to the corresponding access point 203 on the ESD conduction trace 20. The ESD release unit 30 is configured to release static electricity from the corresponding signal line 10 to the ESD conduction trace 20, and the ESD conduction trace 20 is configured to release static electricity to the first capacitor 40 and the second capacitor 50.

[0039] Please see Figure 3 , Figure 3 It indicated Figure 2The structure of the first capacitor and the second capacitor is described. In some examples, the first capacitor 40 and the second capacitor 50 have the same structure, both including a first metal dielectric layer 41, an insulating layer 42 disposed on the first metal dielectric layer 41, and a second metal dielectric layer 43 disposed on the side of the insulating layer 42 facing away from the first metal dielectric layer 41. The insulating layer 42 can be silicon nitride (SiNx). The capacitance values ​​of the first capacitor 40 and the second capacitor 50 are limited by the area of ​​the first metal dielectric layer 41, the area of ​​the second metal dielectric layer 43, and the film thickness of the insulating layer 42. Without affecting other in-plane designs, the larger the capacitance values ​​of the first capacitor 40 and the second capacitor 50, the better. This allows for the acceptance of greater static electricity, greatly improving the electrostatic discharge (ESD) protection capability of the display panel.

[0040] Specifically, taking the example where the areas of the first metal dielectric layer 41 and the second metal dielectric layer 43 are the same, the capacitance values ​​of the first capacitor 40 and the second capacitor 50 can be determined by the following formula:

[0041]

[0042] In the formula, C is the capacitance value, δ is the dielectric constant, S is the area of ​​the first metal dielectric layer 41, and d is the film thickness of the insulating layer 42.

[0043] In this embodiment of the display panel, all signal lines 10 are connected in parallel through electrostatic conduction traces 20 and electrostatic discharge units 30 to form a large parallel capacitance. These parallel capacitances include various parasitic capacitances, storage capacitances, etc. At the same time, the electrostatic discharge units 30 release the static electricity on each signal line 10 to the electrostatic conduction traces 20, and finally consume it in the first capacitor 40 and the second capacitor 50. This allows the static electricity on the signal lines 10 to be properly discharged, which can greatly enhance the electrostatic protection capability of the display panel without affecting the signal stability of the common electrode line 60, thereby improving product reliability.

[0044] In some embodiments, the display panel includes a display area A and a non-display area at least partially surrounding the display area A, and a plurality of signal lines 10 include scan lines 11 extending along a first direction X and data lines 12 extending along a second direction Y, wherein the first direction X and the second direction Y intersect. Exemplarily, the first direction X is a horizontal direction and the second direction Y is a vertical direction.

[0045] The electrostatic discharge unit 30 can be located in a non-display area. The electrostatic discharge unit 30 includes a first electrostatic discharge unit 35 and a second electrostatic discharge unit 36. The first electrostatic discharge unit 35 is electrically connected to the corresponding scan line 11, and the second electrostatic discharge unit 36 ​​is electrically connected to the corresponding data line 12. It is understood that, for better description, in this embodiment, the electrostatic discharge unit 30 electrically connected to the scan line 11 is referred to as the first electrostatic discharge unit 35, and the electrostatic discharge unit 30 electrically connected to the data line 12 is referred to as the second electrostatic discharge unit 36. However, the first electrostatic discharge unit 35 and the second electrostatic discharge unit 36 ​​have the same structure and are both electrostatic discharge units 30.

[0046] In some examples, each scan line 11 is electrically connected to a first electrostatic discharge unit 35, and each data line 12 is electrically connected to a second electrostatic discharge unit 36. Specifically, for any two adjacent scan lines 11, the two first electrostatic discharge units 35 connected to the two scan lines 11 are arranged along a first direction X on both sides of the display area A. For any two adjacent data lines 12, the two second electrostatic discharge units 36 connected to the two data lines 12 are arranged along a second direction Y on the same side of the display area A. For example, each second electrostatic discharge unit 36 ​​can be arranged along the second direction Y on the side of the display area A near the top of the display panel, or it can be arranged along the second direction Y on the side of the display area A near the bottom of the display panel. In this way, each signal line 10 is connected to an electrostatic discharge unit 30, thereby achieving a relatively even layout while maintaining electrostatic discharge of the signal lines 10, facilitating wiring.

[0047] In other examples, each scan line 11 is electrically connected to two first electrostatic discharge units 35, which are located at both ends of the scan line 11 along a first direction X. Each data line 12 is electrically connected to two second electrostatic discharge units 36, which are located at both ends of the data line 12 along a second direction Y. In this way, both ends of each signal line 10 are connected to electrostatic discharge units 30, thereby more effectively dissipating static electricity on the signal line 10, further enhancing the electrostatic protection capability of the display panel, and preventing static electricity from affecting the display panel.

[0048] In other examples, multiple scan lines 11 or multiple data lines 12 may share a single electrostatic discharge unit 30. The specific layout of the electrostatic discharge unit 30 can be flexibly set according to the space of the display panel, and there is no specific limitation on this.

[0049] Please see Figure 4 , Figure 4 It indicated Figure 2The structure of the electrostatic discharge unit 30 is described below. In some embodiments, the electrostatic discharge unit 30 may include a first transistor 31, a second transistor 32, a third transistor 33, and a fourth transistor 34. The gate and source of the first transistor 31 and the source of the second transistor 32 are all connected to the third terminal 301. The drain of the first transistor 31, the gate and drain of the second transistor 32, the gate and source of the fourth transistor 34 are all connected to the source of the third transistor 33. The gate and drain of the third transistor 33 and the drain of the fourth transistor 34 are all connected to the fourth terminal 302. Thus, the electrostatic discharge unit 30 can achieve bidirectional protection, that is, it can discharge static electricity on the signal line 10 to the static conduction trace 20, and it can also prevent static electricity on the static conduction trace 20 from being conducted into the signal line 10, thereby achieving a better electrostatic protection effect and improving the electrostatic protection capability of the display panel.

[0050] Please continue reading. Figure 2 In some embodiments, the electrostatic conduction trace 20 may include a first trace 21 extending along a first direction X, a second trace 22 extending along a second direction Y, and a third trace 23. The third trace 23 extends along the edge of the non-display area away from the display area. Both the first trace 21 and the second trace 22 are electrically connected to the third trace 23. The two ends of the third trace 23, which are arranged opposite each other along the extension direction, are respectively configured as a first end 201 and a second end 202. The access point 203 provided on the second trace 22 is configured to electrically connect to the fourth end 302 of the corresponding first electrostatic discharge unit 35, and the access point 203 provided on the first trace 21 is configured to electrically connect to the fourth end 302 of the corresponding second electrostatic discharge unit 36.

[0051] For example, the second trace 22 can be electrically connected to the third trace 23, and the first trace 21 can be electrically connected to the second trace 22. This makes the traces more regular and the spacing more uniform, thereby reducing the difficulty of routing within the display panel. Alternatively, both the first trace 21 and the second trace 22 can be directly electrically connected to the third trace 23; this embodiment of the application does not specifically limit this.

[0052] It should be noted that, in this embodiment, the extension direction of the trace refers to the direction of the extension trajectory formed by extending from one end of the trace to the other end. This extension trajectory can be a straight line, an arc, a broken line, or a combination of trajectories of various shapes. The extension direction of the trace can include a first direction and / or a second direction, and can also include any other arbitrary direction. For example, the third trace 23 can first extend from the first end 201 along the second direction Y to position a, then extend along the first direction X to position b, and finally extend from position b along the second direction Y to the second end 202.

[0053] In some embodiments, the display panel further includes a common electrode line 60 disposed in the non-display area. At least a portion of the common electrode line 60 surrounds the display area A, and both ends of the common electrode line 60 are respectively connected to corresponding pins of the driver chip 80. A third trace 23 is disposed around the side of the common electrode line 60 away from the display area A. In this way, the third trace 23 is disposed around the common electrode line 60, and will not affect the common electrode line 60 during electrostatic conduction, thereby maintaining the signal stability of the common electrode line 60.

[0054] In addition, the applicant considered that cracks may be generated in any process during the manufacturing of electronic paper display devices, such as thermal shock caused by the cleaning process, vacuum suction head, glass substrate cutting, etc. In addition to the obviously visible large cracks, there are more potential small cracks that are not easily detected by the naked eye. These cracks usually lead to broken circuits in the peripheral circuits of the display panel or electrical defects such as resistance changes, which seriously affect the reliability and pass rate of the display.

[0055] Based on the above considerations, in this embodiment, the display panel may further include a crack detection line 70. The crack detection line 70 has a signal input terminal 701 and a signal output terminal 702 along its extension direction. The signal input terminal 701 is configured to receive a crack detection signal, and the signal output terminal 702 is configured to output a crack detection signal. The shape offset of the crack detection signal output by the signal output terminal 702 is configured to characterize the presence of a crack on the crack detection line 70. This allows for timely detection of cracks in the peripheral circuitry of the glass substrate, thereby further improving product reliability and yield, and saving costs.

[0056] In some examples, the crack detection line 70 can be the same as the third trace 23, with the signal input terminal 701 configured as one of the first terminal 201 and the second terminal 202, and the signal output terminal 702 configured as the other of the first terminal 201 and the second terminal 202. It is understood that the crack detection signal may bypass the first capacitor 40 and the second capacitor. In other examples, the signal input terminal 701 can also be configured on the third trace 23 near the first terminal 201, and the signal output terminal 702 can also be configured on the third trace 23 near the second terminal 202; the specific configuration is not limited. This cleverly reuses the third trace 23 for crack detection, further saving traces and reducing wiring complexity.

[0057] Please refer to the following: Figure 5 and Figure 6 , Figure 5 The diagram illustrates the equivalent circuit diagram for crack detection in an embodiment of this application. Figure 6An example diagram illustrating a crack detection signal in an embodiment of this application is provided. In some examples, each signal line 10 is connected in parallel via electrostatic conduction trace 20 and electrostatic discharge unit 30 to form a large parallel capacitance. This, combined with other components, forms an equivalent resistance R. The crack detection signal input from signal input terminal 701, such as a DC voltage signal, passes through the equivalent resistance R and is output from signal output terminal 702. Under normal circumstances, the voltage and current have a linear relationship (see curve L1). However, in the presence of a crack, the voltage and current relationship becomes non-linear (see curve L2). Therefore, based on whether the crack detection signal output from signal output terminal 702 has a shape deviation, the presence of a crack on the crack detection line 70 can be detected, thereby determining whether electrical defects such as broken wires or resistance changes have occurred in the peripheral circuitry of the display panel near the crack detection line 70.

[0058] In the above manner, the electrostatic conduction trace 20 and electrostatic discharge unit 30 provided on the display panel of this application embodiment can integrate crack detection function and electrostatic protection function. Without affecting the signal stability of the common electrode line 60, it can improve the electrostatic protection capability of the glass substrate and detect glass circuit cracks, which can greatly improve product reliability and pass rate and save costs.

[0059] Accordingly, this application provides a display device including the display panel as described in the foregoing embodiments. The display device may be an electronic paper display device or other TFT-LCD display devices, etc., and this embodiment does not impose any special limitations on it.

[0060] In this way, the display device of this application embodiment releases the static electricity on each signal line 10 to the static conduction trace 20 through the static discharge unit 30, and finally consumes it in the first capacitor 40 and the second capacitor 50, so that the static electricity on the signal line 10 can be properly discharged. This enhances the electrostatic protection capability of the display panel without affecting the signal stability of the common electrode line 60, thereby improving product reliability.

[0061] The above provides a detailed description of a display panel and display device provided in the embodiments of this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only configured to help understand the technical solutions and core ideas of this application. Those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A display panel, characterized in that, The display panel includes: Multiple signal lines (10); An electrostatic conductive trace (20) has a first end (201) and a second end (202) arranged opposite to each other. The first end (201) is electrically connected to a first capacitor (40), and the second end (202) is electrically connected to a second capacitor (50). The electrostatic conductive trace (20) is also provided with a plurality of access points (203). The electrostatic discharge unit (30) has a third end (301) and a fourth end (302). The third end (301) is electrically connected to the corresponding signal line (10), and the fourth end (302) is electrically connected to the corresponding access point (203) on the electrostatic conduction line (20). The electrostatic discharge unit (30) is configured to discharge static electricity on the corresponding signal line (10) to the electrostatic conduction trace (20), and the electrostatic conduction trace (20) is configured to discharge static electricity to the first capacitor (40) and the second capacitor (50). The signal lines (10) are connected in parallel through the electrostatic conduction trace (20) and the electrostatic discharge unit (30) to form a parallel capacitor.

2. The display panel according to claim 1, characterized in that, The display panel includes a display area and a non-display area that at least partially surrounds the display area, and the plurality of signal lines (10) include a scan line (11) extending along a first direction (X) and a data line (12) extending along a second direction (Y), the first direction (X) intersecting the second direction (Y); The electrostatic discharge unit (30) is located in the non-display area. The electrostatic discharge unit (30) includes a first electrostatic discharge unit (35) and a second electrostatic discharge unit (36). The first electrostatic discharge unit (35) is electrically connected to the corresponding scan line (11), and the second electrostatic discharge unit (36) is electrically connected to the corresponding data line (12).

3. The display panel according to claim 2, characterized in that, Each of the scan lines (11) is electrically connected to a first electrostatic discharge unit (35), and each of the data lines (12) is electrically connected to a second electrostatic discharge unit (36). Specifically, for any two adjacent scan lines (11), the two first electrostatic discharge units (35) electrically connected to the two scan lines (11) are disposed on both sides of the display area along the first direction (X), and for any two adjacent data lines (12), the two second electrostatic discharge units (36) electrically connected to the two data lines (12) are disposed on the same side of the display area along the second direction (Y).

4. The display panel according to claim 2, characterized in that, Each scan line (11) is electrically connected to two first electrostatic discharge units (35), and the two first electrostatic discharge units (35) are disposed at both ends of the scan line (11) along the first direction (X). Each data line (12) is electrically connected to two second electrostatic discharge units (36), and the two second electrostatic discharge units (36) are disposed at both ends of the data line (12) along the second direction (Y).

5. The display panel according to claim 2, characterized in that, The electrostatic conduction trace (20) includes a first trace (21) extending along the first direction (X), a second trace (22) extending along the second direction (Y), and a third trace (23). The third trace (23) extends along the edge of the non-display area away from the display area. The first trace (21) and the second trace (22) are both electrically connected to the third trace (23). The two ends of the third trace (23) arranged opposite to each other along the extension direction are respectively configured as the first end (201) and the second end (202). The access point (203) arranged on the second trace (22) is configured to electrically connect to the fourth end (302) of the corresponding first electrostatic discharge unit (35). The access point (203) arranged on the first trace (21) is configured to electrically connect to the fourth end (302) of the corresponding second electrostatic discharge unit (36).

6. The display panel according to claim 5, characterized in that, The display panel also includes a common electrode line (60) disposed in the non-display area, at least a portion of the common electrode line (60) surrounding the display area, and the third trace (23) is arranged around the side of the common electrode line (60) away from the display area.

7. The display panel according to claim 5, characterized in that, The display panel also includes a crack detection line (70), which has a signal input terminal (701) and a signal output terminal (702) along its extension direction. The signal input terminal (701) is configured to receive a crack detection signal, and the signal output terminal (702) is configured to output the crack detection signal. The shape offset of the crack detection signal output by the signal output terminal (702) is configured to indicate the presence of a crack on the crack detection line (70).

8. The display panel according to claim 7, characterized in that, The crack detection line (70) and the third trace (23) are the same trace. The signal input terminal (701) is configured as one of the first terminal (201) and the second terminal (202), and the signal output terminal (702) is configured as the other of the first terminal (201) and the second terminal (202).

9. The display panel according to claim 1, characterized in that, The electrostatic discharge unit (30) includes a first transistor (31), a second transistor (32), a third transistor (33), and a fourth transistor (34). The gate of the first transistor (31), the source of the first transistor (31) and the source of the second transistor (32) are all connected to the third terminal (301). The drain of the first transistor (31), the gate of the second transistor (32), the drain of the second transistor (32), the gate of the fourth transistor (34) and the source of the fourth transistor (34) are all connected to the source of the third transistor (33). The gate of the third transistor (33), the drain of the third transistor (33) and the drain of the fourth transistor (34) are all connected to the fourth terminal (302).

10. A display device, characterized in that, Includes the display panel as described in any one of claims 1 to 9.

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