Display panel and display device

Abstract

The present application provides a display panel and a display device, wherein the display panel includes a panel crack detection circuit located in a non-display area of ​​the display panel, wherein the panel crack detection circuit includes a substrate; a first metal layer, which is arranged on the substrate, and the first metal layer includes a first routing line; an insulating layer, which is arranged on a side of the first metal layer away from the substrate, and at least one routing via is arranged on the insulating layer, and the first routing line is exposed in the routing via; a second metal layer, which is arranged on a side of the insulating layer away from the substrate, and the second metal layer includes a second routing line, and the second routing line is passed through the routing via and connected to the first routing line. The panel crack detection circuit in the display panel of the embodiment of the present application forms a double-layer routing structure, and the first routing line and the second routing line in the panel crack detection circuit form a series connection in the thickness direction of the display panel, so that when the crack expands along the thickness direction of the film layer, the panel crack detection circuit can also detect the crack.

Description

Technical Field

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

[0002] In the manufacturing process of display panels, external force collisions (for example, collisions in the tray, scratches during machine transmission, etc.) and cutting processes may cause micro cracks in the edge area of ​​the display panel. Cracks extend to the display area and cause water and oxygen intrusion, resulting in packaging failure. At the same time, tiny micro cracks can easily cause reliability issues on the entire device as time or the environment changes.

[0003] In order to promptly detect defective products with microcracks, the display panel design uses panel crack detection (PCD) routing to detect cracks. Conventional PCD uses a metal routing design. The principle is to arrange metal routing around the display panel. If microcracks occur, the metal routing will break, and then the PCD signal will become abnormal. This will promptly detect abnormal display panels and prevent defective products from being released later.

[0004] However, in the existing PCD routing and wiring method, when the crack is perpendicular to the long side direction or at a certain angle to the long side direction, the current design can detect it to a certain extent. However, in the actual production process, the shapes of the cracks produced are different due to different causes. The current conventional PCD routing is insufficient for detecting cracks of various shapes. For example, when the crack is parallel to the long side of the display panel, it cannot be effectively detected because the PCD routing is parallel to the crack, resulting in a low crack detection rate. In addition, when the crack has a certain extension depth, the existing PCD routing also has a low crack detection rate. Summary of the invention

[0005] The present application provides a display panel and a display device to solve the problem that the crack detection rate of the panel crack detection circuit is low.

[0006] In one aspect, the present application provides a display panel, comprising:

[0007] A substrate and a panel crack detection circuit arranged on the substrate, wherein the panel crack detection circuit comprises:

[0008] A first metal layer is disposed on the base substrate, wherein the first metal layer includes a first trace;

[0009] An insulating layer, disposed on a side of the first metal layer away from the base substrate, wherein at least one wiring via hole is disposed on the insulating layer, and the first wiring is exposed in the wiring via hole;

[0010] The second metal layer is disposed on a side of the insulating layer away from the base substrate. The second metal layer includes a second routing line. The second routing line passes through the routing via hole and is connected to the first routing line.

[0011] In a possible implementation of the present application, the routing via includes a first hole and a second hole, the first hole and the second hole are arranged at intervals along a first direction, the first routing line extends along the first direction, one end of the first routing line is exposed in the first hole, and the other end is exposed in the second hole;

[0012] The second routing line extends along the first direction, and an end of the second routing line is connected to two ends of the first routing line through the first hole and / or the second hole.

[0013] In a possible implementation of the present application, the first hole and the second hole are also spaced apart along the second direction, the middle portion of the first routing line is bent along the second direction, the middle portion of the second routing line is bent along the second direction, and the first routing line and the second routing line form a spiral winding.

[0014] In a possible implementation of the present application, the display panel also includes a thin film transistor arrayed on the base substrate, the thin film transistor includes a gate layer and a source and drain layer, the source and drain layer and the second wiring are arranged in the same layer in the second metal layer, and the gate layer and the first wiring are arranged in the same layer in the first metal layer.

[0015] In a possible implementation of the present application, the display panel also includes a thin film transistor arrayed on the base substrate, the thin film transistor includes a light-shielding metal layer and a source-drain layer, the source-drain layer and the second wiring are arranged in the same layer in the second metal layer, and the light-shielding metal layer and the first wiring are arranged in the same layer in the first metal layer.

[0016] In a possible implementation of the present application, the panel crack detection circuit further includes:

[0017] A first detection terminal connected to the first wiring or the second wiring;

[0018] The second detection terminal is connected to the first wiring or the second wiring, and the first wiring and the second wiring between the first detection terminal and the second detection terminal are connected in series.

[0019] In a possible implementation of the present application, the display panel further includes:

[0020] A gate driving circuit, wherein the gate driving circuit comprises a first driving circuit and a second driving circuit arranged opposite to each other;

[0021] A connecting wire, one end of which is connected to the first driving circuit, and the other end of which is connected to the second driving circuit, and the connecting wire is a connecting wire or a scanning wire;

[0022] The gate drive circuit and the connection wiring are multiplexed as the panel crack detection circuit.

[0023] In a possible implementation of the present application, the connecting wire and the first wire are arranged in the same layer in the first metal layer.

[0024] In a possible implementation of the present application, the connecting line and the second line are arranged in the same layer in the second metal layer.

[0025] On the other hand, the present application also provides a display device, comprising the display panel.

[0026] The present application provides a display panel and a display device. A first metal layer and a second metal layer that are insulated from each other are set in a panel crack detection circuit of the display panel, so that a first routing line is formed in the first metal layer, a second routing line is formed in the second metal layer, and a routing via hole is opened in the insulating layer, and the first routing line is set to be exposed in the routing via hole, so that the second routing line can pass through the routing via hole to be connected to the second routing line. Since the first metal layer and the second metal layer are different metal film layers, the panel crack detection circuit forms a double-layer routing structure, and the first routing line and the second routing line in the panel crack detection circuit are connected in series in the thickness direction of the display panel, so that when the crack of the panel expands along the thickness direction of the film layer of the display panel, the panel crack detection circuit can also detect the crack, which is beneficial to improve the crack detection rate of the panel crack detection circuit, thereby facilitating improving the yield of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The technical solution and other beneficial effects of the present application will be made apparent by describing in detail the specific implementation methods of the present application in conjunction with the accompanying drawings.

[0028] Figure 1 A schematic diagram of the structure of a display panel provided in an embodiment of the present application.

[0029] Figure 2 Provided in the embodiments of this application Figure 1 Enlarged view of point A in the middle.

[0030] Figure 3 Provided in the embodiments of this application Figure 1 Schematic diagram of the cross-section structure at A in the middle.

[0031] Figure 4 A schematic structural diagram of a display panel provided in yet another embodiment of the present application.

[0032] Figure 5 Provided in the embodiments of this application Figure 4 Enlarged view of point B in the middle.

[0033] Figure 6 This is a schematic diagram of the film layer structure of the thin film transistor and panel crack detection circuit of the present application.

[0034] Figure 7 This is another schematic diagram of the film layer structure of the thin film transistor and panel crack detection circuit of the present application.

[0035] Figure 8 A schematic structural diagram of a display panel provided in yet another embodiment of the present application. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0037] In the description of the present application, it should be understood that the features of the terms "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined. It should be noted that, unless otherwise clearly specified and defined, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be directly connected or indirectly connected through an intermediate medium. It can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0038] The disclosure below provides many different embodiments or examples to realize the different structures of the present application. In order to simplify the disclosure of the present application, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplification and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed. In addition, the various specific processes and material examples provided by the present application, but those of ordinary skill in the art can appreciate the application of other processes and / or the use of other materials.

[0039] The embodiments of the present application provide a display panel and a display device, which are respectively described in detail below.

[0040] Please refer to Figure 1-Figure 6 An embodiment of the present application provides a display panel. The display panel in the embodiment of the present application can be an organic light emitting diode (OLED) display panel, a quantum dot light emitting diode (QLED) display panel, or a liquid crystal display (LCD) display panel, etc., and no specific limitation is made here.

[0041] The display panel in the embodiment of the present application has a display area 102 and a non-display area 101 arranged around the display area 102, and the display panel includes a panel crack detection circuit 100 located in the non-display area 101, and the panel crack detection circuit 100 includes a base substrate 10, a first metal layer 20, an insulating layer 30 and a second metal layer 40.

[0042] The first metal layer 20 is disposed on the base substrate 10, and the first metal layer 20 includes a first routing line 21. The insulating layer 30 is disposed on a side of the first metal layer 20 away from the base substrate 10, and at least one routing via 301 is disposed on the insulating layer 30, and the first routing line 21 is exposed in the routing via 301; the second metal layer 40 is disposed on a side of the insulating layer 30 away from the base substrate 10, and the second metal layer 40 includes a second routing line 41, and the second routing line 41 is passed through the routing via 301 and connected to the first routing line 21. In the embodiment of the present application, the first routing line 21 and the second routing line 41 are connected in series with each other through the routing via 301.

[0043] The display panel of the embodiment of the present application is arranged in a panel crack detection circuit 100 of the display panel by spacing the first metal layer 20 and the second metal layer 40 through the insulating layer 30, so that the first routing line 21 is formed in the first metal layer 20, and the second routing line 41 is formed in the second metal layer 40, and a routing via 301 is opened in the insulating layer 30, and the first routing line 21 is exposed in the routing via 301, so that the second routing line 41 can pass through the routing via 301 to connect with the second routing line 41. Since the first metal layer 20 and the second metal layer 40 are different metal film layers, the panel crack detection circuit 100 forms a double-layer routing structure, and the first routing line 21 and the second routing line 41 in the panel crack detection circuit 100 are connected in series in the thickness direction of the display panel, so that when the crack of the panel expands along the thickness direction of the film layer of the display panel, the panel crack detection circuit 100 can also detect the crack, which is beneficial to improve the crack detection rate of the panel crack detection circuit 100, thereby facilitating improving the yield of the display panel.

[0044] In some embodiments, Figure 3As shown, the routing via 301 includes at least a first hole 3011 and a second hole 3012, and the first hole 3011 and the second hole 3012 are arranged at intervals along the first direction X, wherein the number of the first holes 3011 and the second holes 3012 are both multiple, and adjacent first holes 3011 and second holes 3012 are alternately arranged at intervals along the first direction X.

[0045] The first line 21 extends along the first direction X, and the second line 41 also extends along the first direction X, and the end of the second line 41 is connected to the two ends of the first line 21 through the first hole 3011 and / or the second hole 3012. Wherein, the number of the first line 21 and the second line 41 are multiple sections, and the first line 21 and the second line 41 are successively connected to form a series structure. Exemplarily, taking the number of the second line 41 as two sections and the number of the first line 21 as one section, one end of the first line 21 is exposed in the first hole 3011, and the other end is exposed in the second hole 3012, wherein the end of one section of the second line 41 is connected to one end of the first line 21 through the first hole 3011, and the end of the other section of the second line 41 is connected to the other end of the first line 21 through the second hole 3012.

[0046] In the embodiment of the present application, in the implementation of the present application, since the first hole 3011 and the second hole 3012 are arranged at intervals along the first direction X, and the first routing line 21 and the second routing line 41 both extend along the first direction X, the first routing line 21 and the second routing line 41 also extend along the third direction Z, that is, along the thickness extension direction of the base substrate 10, and form a serpentine routing structure in the plane formed by the third direction Z and the first direction X.

[0047] In the embodiment of the present application, the first direction X and the second direction Y may be perpendicular to each other, the first direction X may be a horizontal direction, the second direction Y may be a vertical direction, and the first direction X and the second direction Y may be perpendicular to each other. Taking the display panel as a rectangular structure as an example, the first direction X refers to the length direction of the display panel in the display plane, and the first direction X refers to the width direction of the display panel in the display plane. Of course, the display panel of the embodiment of the present application may also include a third direction Z, and the third direction Z may be perpendicular to the first direction X and the second direction Y, respectively. For example, the third direction Z may refer to a direction extending along the thickness of the substrate 10, wherein the wiring via 301 penetrates the insulating layer 30 along the third direction Z.

[0048] In the embodiment of the present application, the orthographic projections of the first wiring 21 and the second wiring 41 on the base substrate 10 are straight line structures, so that when the crack grows along the thickness direction of the display panel, the crack detection circuit can detect it, which is beneficial to improve the probability of crack detection.

[0049] In some embodiments, the routing via 301 includes a first hole 3011 and a second hole 3012, the first hole 3011 and the second hole 3012 are spaced apart along the second direction Y, the middle portion of the first routing 21 is bent and extends along the second direction Y, a portion of the second metal layer 40 is bent along the second direction Y, and two ends of the second routing 41 are respectively connected to the two ends of the first routing 21 through the first hole 3011 and the second hole 3012.

[0050] For example, in combination with Figure 4 and Figure 5 As shown, the first routing line 21 and the second routing line 41 connected in series are wound around the insulating layer 30 to form a spiral routing line. In the embodiment of the present application, the orthographic projection of the first routing line 21 and the second routing line 41 on the base substrate 10 is a bent routing structure. Specifically, the bent routing structure can be, for example, a zigzag routing line, a wavy routing line, a serpentine routing line, etc., so that when the crack grows along the thickness and width directions of the display panel, the crack detection circuit can detect it, which is beneficial to further improve the probability of crack detection.

[0051] In some embodiments, Figure 6 As shown, the display panel further includes a thin film transistor 200 arrayed on the base substrate 10, and the thin film transistor 200 includes a gate layer 220 and a source-drain layer 210, the source-drain layer 210 and the second wiring 41 are arranged in the second metal layer 40 in the same layer, and the gate layer 220 and the first wiring 21 are arranged in the same layer in the first metal layer 20. Since the gate layer 220 and the source-drain layer 210 are located in different film layers, the first wiring 21 and the second wiring 41 can form a double-layer series wiring structure, and at the same time, the source-drain layer 210 and the second wiring 41 are formed with the same material and the same layer, so that the source-drain layer 210 and the second wiring 41 can be formed in the same patterning process, and the gate layer 220 and the first wiring 21 are formed with the same material and the same layer, so that the gate layer 220 and the first wiring 21 can be formed in the same patterning process, which is beneficial to saving production processes while increasing the probability of crack detection, and is beneficial to reducing material and process costs and improving production efficiency.

[0052] It should be noted that when the thin film transistor 200 is a dual-gate thin film transistor, the number of gate layers 220 can be two, for example, including a first gate GE1 and a second gate GE2. At this time, the first wiring 21 can be set in the same layer and material as the first gate GE1, or can be set in the same layer and material as the second gate GE2.

[0053] In some embodiments, Figure 7As shown, the display panel further includes a thin film transistor 200 arrayed on the base substrate 10, and the thin film transistor 200 includes a light shielding metal layer 230 (BSM) and a source-drain electrode layer 210, the source-drain electrode layer 210 and the second wiring 41 are arranged in the second metal layer 40 in the same layer, and the light shielding metal layer 230 and the first wiring 21 are arranged in the same layer in the first metal layer 20. Since the two film layers of the source-drain electrode layer 210 and the light shielding metal layer 230 are farther apart in the third direction Z, that is, in the vertical direction, compared with arranging the second wiring 41 and the gate layer 220 in the same layer, by arranging the second wiring 41 and the gate layer 220 in the same layer, the first wiring 21 covers a larger range in the vertical direction, which is conducive to further increasing the probability of crack detection and improving the detection effect.

[0054] In some embodiments, Figure 1 As shown, the display panel also has a binding area 103, and the panel crack detection circuit 100 also includes a first detection terminal 51 and a second detection terminal 52. The first detection terminal 51 and the second detection terminal 52 are used to connect an external detection device. Exemplarily, the first detection terminal 51 and the second detection terminal 52 can be pads. The external detection device can be, for example, a resistance inspection chip. Of course, in other embodiments, the first detection terminal 51 and the second detection terminal 52 can also be the two ends of the panel crack detection circuit 100, and the external detection device is directly connected to the two ends of the detection circuit.

[0055] Exemplarily, the panel crack detection circuit 100 is divided into two loops on both sides of the display panel, one of the panel crack detection circuits 100 forming a loop is connected to an external detection device through a first detection terminal 51, and the other panel crack detection circuit 100 forming a loop is connected to an external detection device through a second detection terminal 52. Usually, the loop wiring resistance is 40 kiloohms. If a crack occurs, due to PCD wiring breakage or micro-contact caused by fine cracks, the PCD resistance will rise to 100 kiloohms or infinity, thereby determining the presence of a crack.

[0056] In some embodiments, Figure 8 As shown, the display panel further includes a display area 102 and a non-display area 101, and the non-display area 101 is arranged around the display area 102. In the embodiment of the present application, the non-display area 101 is arranged around the display area 102. The display panel further includes a gate drive circuit 60 and a connection line 70.

[0057] The gate driving circuit 60 is disposed in the non-display area 101. In the embodiment of the present application, the driving circuit 60 may be a gate on array (GOA) driving circuit 60. The gate driving circuit 60 may be a dual driving circuit, that is, the gate driving circuit 60 includes a first driving circuit 61 and a second driving circuit 62 that are disposed opposite to each other.

[0058] In the embodiment of the present application, the connection line 70 is partially located in the non-display area 101, and partially located in the display area 102. Specifically, the middle part of the connection line 70 is located in the display area 102, and the two ends are located in the non-display area 101. One end of the connection line 70 is connected to the first drive circuit 61, and the other end is connected to the second drive circuit 62. The connection line 70 is arranged in the non-display area 101, and the number of the connection lines 70 is multiple, and the adjacent connection lines 70 are arranged at intervals along the second direction X. Both ends of each connection line 70 are connected to the first drive circuit 61 and the second drive circuit 62. Among them, the connection line 70 can be a reset line (VI) of the gate drive circuit 60, or it can be a scan line (Pscan). When the connection line 70 is a reset line, the gate drive circuit 60 provides a reset signal for the reset line, and the reset line is used to reset the display panel when each frame of the picture is input. When the connection line 70 is a scanning line, the gate driving circuit 60 provides a scanning signal for the scanning line, and the scanning line is used for row-by-row scanning of the display panel.

[0059] Among them, the gate drive circuit 60 and the connecting line 70 are multiplexed as the panel crack detection circuit 100. In the embodiment of the present application, the gate drive circuit 60 adopts a dual drive mode, and the initial STV signals of the gate drive circuits 60 on both sides (the initial signals on both sides are the same) will be transmitted to the top of the first drive circuit 61 and the second drive circuit 62, and then transmitted to the lower level. Each time it is transmitted to the lower level gate drive circuit, it also transmits a signal to the corresponding display area 102. If a certain position of any circuit in the first drive circuit 61 or the second drive circuit 62 is disconnected, the gate drive circuit 60 cannot be transmitted to the lower level. Although the pixels of the entire row can still be reset or data (Data) written through the other side, it has changed from dual drive to single drive, so that the row where the problem occurs and the following are all single drive. Because of the difference in load (Loading), there will be brightness differences between single drive and dual drive. The row where the difference occurs is the location where the crack occurs, so that the location where the crack occurs can be quickly located, which is conducive to further increasing the detection rate of the crack.

[0060] It should be noted that in the embodiment of the present application, the circuit routing of the gate drive circuit 60 may be a meander routing structure or a spiral winding structure, so that the gate drive circuit 60 is more sensitive to cracks. Of course, the circuit routing of the gate drive circuit 60 may also be a straight routing structure using a conventional panel crack detection circuit 100, and no specific limitation is made here.

[0061] In some embodiments, the connecting wire 70 can be disposed in the first metal layer 20 in the same layer as the first wire 21. The connecting wire 70 and the first wire 21 are formed using the same material and the same layer, so that the connecting wire 70 and the first wire 21 can be formed in the same patterning process, which is beneficial to saving production processes while increasing the probability of crack detection, reducing material and process costs, and improving production efficiency.

[0062] In some embodiments, the connecting wire 70 may also be disposed in the same layer as the second wire 41 in the second metal layer 40. Similarly, the connecting wire 70 and the second wire 41 are formed of the same material and the same layer, so that the connecting wire 70 and the second wire 41 can be formed in the same patterning process, which is beneficial to saving production processes while increasing the probability of crack detection, reducing material and process costs, and improving production efficiency.

[0063] In order to better implement the display panel of the present application, the present application also provides a display device, which includes the above-mentioned display panel.

[0064] The display device of the embodiment of the present application sets a first metal layer 20 and a second metal layer 40 that are insulated from each other in the panel crack detection circuit 100 of the display panel, so that the first routing line 21 is formed in the first metal layer 20, and the second routing line 41 is formed in the second metal layer 40, and a routing via 301 is opened in the insulating layer 30, and the first routing line 21 is set to be exposed in the routing via 301, so that the second routing line 41 can pass through the routing via 301 to connect with the second routing line 41, so that the panel crack detection circuit 100 forms a double-layer routing structure, and the first routing line 21 and the second routing line 41 in the panel crack detection circuit 100 are connected in series in the thickness direction of the display panel, so that when the crack of the panel expands along the thickness direction of the film layer of the display panel, the panel crack detection circuit 100 can also detect the crack, which is beneficial to improve the crack detection rate of the panel crack detection circuit 100, thereby facilitating improving the yield of the display panel.

[0065] Since the display device has the above-mentioned display panel, it has all the same beneficial effects, and this embodiment will not be repeated here. The embodiment of the present application does not specifically limit the applicability of the display device, which can be a handheld device (smartphone, tablet computer, etc.), a wearable device (smart bracelet, wireless headset, smart watch, smart glasses, etc.), a vehicle-mounted device (navigator, auxiliary reversing system, driving recorder, car refrigerator, etc.), a virtual reality device, an augmented reality device, a terminal device, etc., without limitation here.

[0066] In the above embodiments, the description of each embodiment has its own emphasis. For parts not described in detail in a certain embodiment, please refer to the relevant description of other embodiments. In specific implementation, the above units or structures can be implemented as independent entities, or can be arbitrarily combined and implemented as the same or several entities. The specific implementation of the above units or structures can refer to the previous method embodiments, which will not be repeated here.

[0067] The above is a detailed introduction to a display panel and a display device provided in the embodiments of the present application. Specific examples are used herein to illustrate the principles and implementation methods of the embodiments of the present application. The description of the above embodiments is only used to help understand the technical solutions and core ideas of the embodiments of the present application. Ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some of the technical features therein with equivalents; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A display panel, characterized in that: include: A substrate and a panel crack detection circuit arranged on the substrate, wherein the panel crack detection circuit comprises: A first metal layer is disposed on the base substrate, wherein the first metal layer includes a first trace; An insulating layer, disposed on a side of the first metal layer away from the base substrate, wherein at least one wiring via hole is disposed on the insulating layer, and the first wiring is exposed in the wiring via hole; A second metal layer is disposed on a side of the insulating layer away from the base substrate, the second metal layer comprises a second routing line, and the second routing line passes through the routing via hole and is connected to the first routing line; The routing via includes a first hole and a second hole, the first hole and the second hole are spaced apart along a second direction, the middle portion of the first routing is bent along the second direction, the middle portion of the second routing is bent along the second direction, and the first routing and the second routing form a spiral winding.

2. The display panel according to claim 1, characterized in that: The first hole and the second hole are arranged at intervals along a first direction, the first wiring extends along the first direction, one end of the first wiring is exposed in the first hole, and the other end is exposed in the second hole; The second routing line extends along the first direction, and an end of the second routing line is connected to two ends of the first routing line through the first hole and / or the second hole.

3. The display panel according to claim 1, characterized in that: The display panel also includes a thin film transistor arrayed on the base substrate, the thin film transistor includes a gate layer and a source and drain layer, the source and drain layer and the second wiring are arranged in the second metal layer, and the gate layer and the first wiring are arranged in the first metal layer.

4. The display panel according to claim 1, characterized in that: The display panel also includes a thin film transistor arrayed on the base substrate, the thin film transistor includes a light-shielding metal layer and a source-drain layer, the source-drain layer and the second wiring are arranged in the second metal layer, and the light-shielding metal layer and the first wiring are arranged in the first metal layer.

5. The display panel according to claim 1, characterized in that: The panel crack detection circuit also includes: A first detection terminal connected to the first wiring or the second wiring; The second detection terminal is connected to the first wiring or the second wiring, and the first wiring and the second wiring between the first detection terminal and the second detection terminal are connected in series.

6. The display panel according to claim 1, characterized in that: The display panel further includes: A gate driving circuit, wherein the gate driving circuit comprises a first driving circuit and a second driving circuit arranged opposite to each other; A connecting wire, one end of which is connected to the first driving circuit, and the other end of which is connected to the second driving circuit, and the connecting wire is a connecting wire or a scanning wire; The gate drive circuit and the connection wiring are multiplexed as the panel crack detection circuit.

7. The display panel according to claim 6, characterized in that: The connecting wire and the first wire are arranged in the first metal layer at the same layer.

8. The display panel according to claim 6, characterized in that: The connecting wire and the second wire are arranged in the second metal layer at the same layer.

9. A display device, characterized in that: Comprising a display panel as described in any one of claims 1-8.

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