Display panel and display device

Abstract

The embodiments of the present application disclose a display panel and a display device, comprising a first substrate, a gate trace, and a stress release layer. The orthographic projection of the junction of the two portions of the gate trace on the first substrate is located within the orthographic projection of the stress release layer on the first substrate. When the display panel is bent, the gate trace primarily breaks at the junction of the two portions. By providing a stress release layer directly above the junction of the two portions of the gate trace, the position of the neutral plane of the display panel can be changed and stress can be dispersed or absorbed, thereby preventing the gate trace from breaking at the junction of the two portions due to stress concentration. This, in turn, prevents the display panel from displaying horizontal stripes, thereby improving the yield of the display panel.

Description

Technical Field

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

[0002] Currently, OLED (Organic Light-Emitting Diode), also known as organic laser display or organic light-emitting semiconductor, has superior characteristics compared to traditional liquid crystal displays (LCDs). OLED displays require no backlight, have low drive voltages, are lightweight and thin, offer wide viewing angles, high contrast, fast response rates, and are flexible. They are widely used in display applications such as mobile phones, digital cameras, DVD players, laptop computers, and televisions. Existing OLED display devices have transitioned from traditional dual-curved displays to quad-curved displays.

[0003] Compared to traditional dual-curved display devices, quad-curved display devices also have a bent lower binding area. The flexible printed circuit board of a display device is typically placed in the lower binding area, where numerous traces reside. Most traces are vulnerable to bending, especially the GOA traces that transmit refresh signals. Therefore, when the lower binding area is bent, the traces located there may break. In particular, when the gate traces within the GOA traces break, this can cause horizontal lines to appear on the display, affecting the display quality.

[0004] Therefore, how to propose a display panel that can improve the bending resistance of the wiring located in the lower binding area is a difficult problem that existing panel manufacturers need to work hard to overcome. Summary of the Invention

[0005] The embodiments of the present application provide a display panel and a manufacturing method thereof, which can solve the technical problem that the wiring in the binding area below the display panel is easily broken.

[0006] An embodiment of the present application provides a display panel, including a display area and a non-display area located on one side of the display area, wherein the non-display area has an R angle. The display panel includes:

[0007] a first substrate;

[0008] a gate wiring, the gate wiring being provided on the first substrate;

[0009] A stress release layer, the stress release layer is located on a side of the gate wiring away from the first substrate; wherein,

[0010] The gate trace includes a first portion and a second portion extending in different directions, and the first portion and the second portion are connected at the R corner, and the orthographic projection of the connection point between the first portion and the second portion on the first substrate is located in the orthographic projection of the stress release layer on the first substrate.

[0011] Optionally, in some embodiments of the present application, the display panel further includes a pixel definition layer and a pixel layer, the pixel definition layer is arranged in the same layer as the stress release layer, and the pixel definition layer is provided with a plurality of first grooves, the pixel layer fills the first grooves, and the distance between the side of the stress release layer close to the pixel definition layer and the side of the pixel definition layer close to the stress release layer is greater than 45 microns.

[0012] Optionally, in some embodiments of the present application, the display panel further includes a first insulating layer, which is disposed between the gate wiring and the stress release layer; and a plurality of recesses are provided on a side of the stress release layer close to the first insulating layer, and the interlayer insulating layer fills the recesses.

[0013] Optionally, in some embodiments of the present application, the recessed portions are spaced evenly apart.

[0014] Optionally, in some embodiments of the present application, the spacing between the recessed portions increases sequentially along the direction from the pixel definition layer to the stress release layer.

[0015] Optionally, in some embodiments of the present application, the stress release layer includes a first stress release sublayer, a second stress release sublayer, and a third stress release sublayer stacked in sequence, and the elastic moduli of the first stress release sublayer, the second stress release sublayer, and the third stress release sublayer are different.

[0016] Optionally, in some embodiments of the present application, the elastic modulus of the first stress release sublayer is smaller than that of the second stress release sublayer, and the elastic modulus of the third stress release sublayer is smaller than that of the second stress release sublayer.

[0017] Optionally, in some embodiments of the present application, a second groove is provided on a side of the first stress release sublayer close to the second stress release sublayer, and the second stress release sublayer fills the second groove, and a third groove is provided on a side of the third stress release sublayer close to the second stress release sublayer, and the second stress release sublayer fills the third groove.

[0018] Optionally, in some embodiments of the present application, the display panel further includes a first buffer layer, a second substrate, a second buffer layer and a second insulating layer, wherein the first buffer layer, the second substrate, the second buffer layer and the second insulating layer are all located between the first substrate and the gate wiring, the first buffer layer is arranged on the first substrate, the second substrate is arranged on a surface of the first buffer layer away from the first substrate, the second buffer layer is arranged on a surface of the second substrate away from the first substrate, and the second insulating layer is arranged on a surface of the second buffer layer away from the first substrate.

[0019] An embodiment of the present application further provides a display device, comprising a frame and the display panel as described above, wherein the frame is used to support the display panel.

[0020] The display panel and display device provided in the embodiments of the present application include a first substrate, a gate trace, and a stress release layer. The orthographic projection of the junction of the two portions of the gate trace on the first substrate is located within the orthographic projection of the stress release layer on the first substrate. When the display panel is bent, the gate trace primarily breaks at the junction of the two portions. Providing a stress release layer directly above the junction of the two portions of the gate trace not only changes the position of the neutral plane of the display panel but also disperses or absorbs stress, thereby preventing the gate trace from breaking at the junction due to stress concentration. This, in turn, prevents horizontal stripes from appearing on the display panel, thereby improving the yield of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 This is a first structural schematic diagram of a first implementation manner of a display panel provided in an embodiment of the present application.

[0023] Figure 2 This is a second structural schematic diagram of the first implementation manner of the display panel provided in an embodiment of the present application.

[0024] Figure 3 2 is a schematic structural diagram of a second embodiment of the display panel provided in an embodiment of the present application.

[0025] Figure 4 3 is a schematic structural diagram of a third embodiment of the display panel provided in an embodiment of the present application.

[0026] Figure 5 3 is a schematic structural diagram of a fourth embodiment of the display panel provided in an embodiment of the present application.

[0027] Figure 6 It is a structural diagram of the fifth embodiment of the display panel provided in the embodiment of the present application.

[0028] Figure 7 3 is a structural diagram of a sixth embodiment of the display panel provided in an embodiment of the present application.

[0029] Figure 8 3 is a structural diagram of the seventh embodiment of the display panel provided in the embodiment of the present application. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be clearly and completely described 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, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present application. In addition, it should be understood that the specific implementation methods described herein are only used to illustrate and explain the present application, and are not used to limit the present application. In the present application, unless otherwise specified, the directional words used, such as "upper" and "lower", generally refer to the upper and lower parts of the device in actual use or working state, specifically the drawing direction in the accompanying drawings; and "inside" and "outside" refer to the outline of the device.

[0031] The present application provides a display panel and a method for manufacturing the same. The following describes each of the embodiments in detail. It should be noted that the order in which the embodiments are described below does not limit the preferred order of the embodiments.

[0032] See also Figure 1 as well as Figure 2 , Figure 1 This is a first structural diagram of a first embodiment of a display panel provided in an embodiment of the present application, Figure 2 This is a second structural diagram of the first embodiment of the display panel provided in the embodiment of the present application. Figure 1 as well as Figure 2 As shown, the display panel 10 provided in the embodiment of the present application includes a display area 10a and a non-display area 10b, wherein the non-display area 10b is located on one side of the display area 10a and has an R angle.

[0033] Among them, it should be noted that Figure 2 for Figure 1Schematic diagram of the cross-sectional structure of the display panel AA section shown. In the embodiment of the present application, the non-display area 10b is provided on the peripheral side of the display area 10a, that is, the non-display area 10b is provided around the display area 10a. Of course, according to the actual selection and specific needs, the non-display area 10b can be provided only on one side of the display area 10a, and this is not the only limitation here. The R angle is the fillet of the arc tangent to the two intersecting straight lines. Specifically, in the implementation of the present application, the R angle is the fillet of the arc tangent to the long side of the display panel 10 and the short side of the display panel.

[0034] The display panel 10 includes a first substrate 101, a gate line 102, and a stress release layer 103. The gate line 102 is disposed on the first substrate 101. Specifically, the gate line 102 is disposed on a side of the first substrate 101 that is close to the stress release layer 103. The stress release layer 103 is disposed on a side of the gate line 102 that is away from the first substrate 101.

[0035] Among them, the gate line 102 includes a first part 102a and a second part 102b extending in different directions, the first part 101a and the second part 102b are connected at the R angle, and the orthographic projections of the first part 101a and the second part 102b on the first substrate 101 are located in the orthographic projection of the stress release layer 103 on the first substrate 101.

[0036] It should be noted that when the display panel 10 is bent, the gate wiring 102 will mainly break at the connection between the two parts. In the embodiment of the present application, a stress release layer 103 is provided directly above the connection between the first part 102a and the second part 102b of the gate wiring 102. This not only changes the position of the neutral plane of the display panel 10, avoiding the layer where the gate wiring 102 is located from being the layer with the most serious stress concentration phenomenon, but also disperses or absorbs stress. This prevents the gate wiring 102 from breaking at the connection between the first part 102a and the second part 102b due to stress concentration, thereby avoiding the horizontal stripes phenomenon when the display panel 10 is displayed, thereby improving the yield of the display panel 10.

[0037] It should be noted that, in the embodiment of the present application, the material of the stress release layer 103 is oxidative dehydrogenation. Of course, the stress release layer 103 may also be made of other organic photoresist materials or inorganic materials as long as they can disperse or absorb stress.

[0038] See also Figure 3 , Figure 3 This is a schematic diagram of the structure of the second embodiment of the display panel provided in the embodiment of the present application. Figure 3 As shown, Figure 3 The display panel 10 shown is Figure 2The difference between the display panel shown is that the display panel 10 also includes a pixel definition layer 104 and a pixel layer 105. The pixel definition layer 104 is arranged on the same layer as the stress release layer 103, and the pixel definition layer 104 is provided with a plurality of first grooves 104a. The pixel layer 105 fills the first grooves 104a. The distance L1 between the side of the stress release layer 103 close to the pixel definition layer 104 and the side of the pixel definition layer 104 close to the stress release layer 103 is greater than 45 microns.

[0039] It should be noted that the display panel 10 provided in the embodiment of the present application is provided with a stress release layer 103 and is extended inward as much as possible to prevent the gate line 102 from breaking at the connection between the first part 102a and the second part 102b due to stress concentration. However, the pixel definition layer 104 is used to isolate the pixel layers 105 of different colors. Therefore, the pixel definition layer 104 must have a certain thickness to ensure that the display panel 10 displays normally. Therefore, in the embodiment of the present application, it is necessary to limit the length of the stress release layer 103 extending inward, that is, to limit the distance between the stress release layer 103 and the pixel definition layer 104, so that the pixel definition layer 104 has a thickness that ensures the normal display of the display panel 10.

[0040] Specifically, in the embodiment of the present application, the distance L1 between the side of the stress release layer 103 close to the pixel definition layer 104 and the side of the pixel definition layer 104 close to the stress release layer 103 is 46 microns, 50 microns, 55 microns, or 60 microns. The specific distance L1 between the side of the stress release layer 103 close to the pixel definition layer 104 and the side of the pixel definition layer 104 close to the stress release layer 103 is determined by the specific requirements of the display panel 10.

[0041] In the embodiment of the present application, it is only necessary to increase the distance L1 between the side of the stress release layer 103 close to the pixel definition layer 104 and the side of the pixel definition layer 104 close to the stress release layer 103 as much as possible, on the basis of satisfying the function of the stress release layer 103 to prevent the gate wiring 102 from breaking at the connection between the first part 102a and the second part 102b due to stress concentration.

[0042] See also Figure 4 , Figure 4 This is a schematic structural diagram of the third embodiment of the display panel provided in the embodiment of the present application. Figure 4 As shown, Figure 4 The display panel 10 shown is Figure 3The difference between the display panel shown is that the display panel 10 further includes a first insulating layer 106. The first insulating layer 106 is disposed between the gate trace 102 and the stress release layer 103. Furthermore, a surface of the stress release layer 103 close to the first insulating layer 106 is provided with a plurality of recesses 103a, which are filled with the first insulating layer 106.

[0043] It should be noted that, since the gate trace 102 needs to be conductive, an insulating layer is required between the gate trace 102 and other film layers to prevent the other film layers from affecting the signal transmission of the gate trace 102. Therefore, in the embodiment of the present application, a first insulating layer 106 is provided between the gate trace 102 and the stress relief layer 103 to prevent the gate trace 102 from contacting the other film layers and affecting their signal transmission. Of course, since the stress relief layer 103 is generally also made of an insulating material, the first insulating layer 106 can also be omitted.

[0044] It should be noted that by providing a plurality of recessed portions 103a on one side of the stress release layer 103 close to the first insulating layer 106, the contact area between the stress release layer 103 and other film layers can be further increased, thereby being more conducive to stress release, thereby better achieving the effect of absorbing stress or buffering stress, and further better avoiding the gate wiring 102 from breaking at the connection between the first part 102a and the second part 102b due to stress concentration, avoiding the horizontal stripe phenomenon of the display panel 10 during display, and improving the yield of the display panel 10.

[0045] Specifically, the cross-sectional shape of the recessed portion 103a is rectangular. Of course, according to the actual situation and specific requirements, the cross-sectional shape of the recessed portion 103a can also be other shapes. For example, the cross-sectional shape of the recessed portion 103a can be elliptical, circular or trapezoidal, etc., which is not particularly limited here.

[0046] Specifically, the connection between the first portion 102a and the second portion 102b of the gate trace 102 is located on the side of the stress release layer 103 close to the pixel definition layer 104. Therefore, the width of the recessed portion 103a can be gradually expanded along the direction from the pixel definition layer 104 to the stress release layer. This can better prevent the gate trace 102 from breaking at the connection between the first portion 102a and the second portion 102b due to stress concentration.

[0047] Specifically, the spacing L2 of the recessed portions 103a increases gradually along the direction from the pixel definition layer 104 to the stress release layer 103. It should be noted that the connection between the first portion 102a and the second portion 102b of the gate line 102 is located on the side of the stress release layer 103 close to the pixel definition layer 104. Therefore, the spacing L2 of the recessed portions 103a increases gradually along the direction from the pixel definition layer 104 to the stress release layer 103, which can better prevent the gate line 102 from breaking at the connection between the first portion 102a and the second portion 102b due to stress concentration.

[0048] See also Figure 5 , Figure 5 This is a schematic structural diagram of the fourth embodiment of the display panel provided in the embodiment of the present application. Figure 5 As shown, Figure 5 The display panel 10 shown is Figure 4 The difference between the display panels shown is that the intervals L2 between the recessed portions 103 a are equal.

[0049] It should be noted that by limiting the intervals L2 of the recessed portions 103 a to be equal, the difficulty of manufacturing the display panel 10 can be reduced, which helps to reduce the manufacturing cost of the display panel 10 .

[0050] See also Figure 6 , Figure 6 This is a schematic structural diagram of a fifth embodiment of the display panel provided in an embodiment of the present application. Figure 6 The display panel 10 shown is Figure 3 The difference of the display panel shown is that the stress release layer 103 includes a first stress release sublayer 1031, a second stress release sublayer 1032 and a third stress release sublayer 1033 stacked in sequence, and the elastic moduli of the first stress release sublayer 1031, the second stress release sublayer 1032 and the third stress release sublayer 1033 are different.

[0051] It should be noted that, in the embodiment of the present application, by setting multiple layers of stress release sublayers with different elastic moduli, the stress can be dispersed and absorbed in sequence, which can better prevent the gate wiring 102 from breaking at the connection between the first part 102a and the second part 102b due to stress concentration.

[0052] Specifically, the elastic modulus of the first stress release sub-layer 1031 is smaller than that of the second stress release sub-layer 1032 , and the elastic modulus of the third stress release sub-layer 1033 is smaller than that of the second stress release sub-layer 1032 .

[0053] It should be noted that when the gate wiring 102 is bent, the stress on the gate wiring 102 will first be absorbed by the first stress release sublayer 1031, then released by the second stress release sublayer 1032, and finally absorbed by the third stress release sublayer 1033, thereby ensuring that the external stress will not hit the gate wiring 102, thereby preventing the gate wiring 102 from breaking at the connection between the first part 102a and the second part 102b due to stress concentration. In addition, by providing multiple layers of stress release sublayers, the overall stress point of the display panel 10 in the R-angle area can also be moved upward, that is, the display panel 10 moves upward on the neutral plane of the R-angle area so that it does not fall on the gate wiring 102, thereby further preventing the gate wiring 102 from breaking at the connection between the first part 102a and the second part 102b due to stress concentration.

[0054] It should be noted that, since the elastic modulus of the first stress release sublayer 1031 is smaller than that of the second stress release sublayer 1032, and the elastic modulus of the third stress release sublayer 1033 is smaller than that of the second stress release sublayer 1032, the first stress release sublayer 1031 and the third stress release sublayer 1033 are generally made of organic materials, while the second stress release sublayer 1032 is made of inorganic materials. Since organic materials are more flexible than inorganic materials, the thickness of the second stress release sublayer 1032 can be made smaller than the thickness of the first stress release sublayer 1031 and the third stress release sublayer 1033, thereby further improving the bending ability of the display panel 10 and better preventing the gate trace 102 from breaking at the connection between the first portion 102a and the second portion 102b due to stress concentration.

[0055] It should be noted that the stress release layer 103 may also include four, five or more stress release sub-layers, so as to better prevent the gate wiring 102 from breaking at the connection between the first part 102a and the second part 102b due to stress concentration.

[0056] See also Figure 7 , Figure 7 This is a schematic structural diagram of a sixth embodiment of the display panel provided in an embodiment of the present application. Figure 7 The display panel 10 shown is Figure 6 The difference of the display panel shown is that: a second groove 1031a is provided on a side of the first stress release sublayer 1031 close to the second stress release sublayer 1032, and the second stress release sublayer 1032 fills the second groove 1031a, and a third groove 1033a is provided on a side of the third stress release sublayer 1033 close to the second stress release sublayer 1032, and the second stress release sublayer 1032 fills the third groove 1033a.

[0057] It should be noted that, in the embodiment of the present application, by providing the second groove 1031a, the contact area between the first stress release sublayer 1031 and the second stress release sublayer 1032 can be increased, thereby being more conducive to the release of stress, thereby better achieving the effect of absorbing stress or buffering stress, and further better avoiding the gate wiring 102 from breaking at the connection between the first part 102a and the second part 102b due to stress concentration, avoiding the horizontal stripe phenomenon of the display panel 10 during display, and improving the yield of the display panel 10.

[0058] It should be noted that, in the embodiment of the present application, by providing the third groove 1033a, the contact area between the third stress release sublayer 1033 and the second stress release sublayer 1032 can be further increased, thereby being more conducive to the release of stress, thereby better achieving the effect of absorbing stress or buffering stress, and further better avoiding the gate wiring 102 from breaking at the connection between the first part 102a and the second part 102b due to stress concentration, avoiding the horizontal stripe phenomenon of the display panel 10 during display, and improving the yield of the display panel 10.

[0059] Specifically, the cross-sectional shape of the second groove 1031a and the third groove 1033a is rectangular. Of course, according to the actual situation and specific requirements, the cross-sectional shape of the second groove 1031a and the third groove 1033a can also be other shapes. For example, the cross-sectional shape of the second groove 1031a and the third groove 1033a can be elliptical, circular or trapezoidal, etc., which is not particularly limited here.

[0060] See also Figure 8 , Figure 8 This is a schematic structural diagram of a seventh embodiment of the display panel provided in an embodiment of the present application. Figure 8 The display panel 10 shown is Figure 3 The difference between the display panel shown is that the display panel 10 further includes a first buffer layer 107, a second substrate 108, a second buffer layer 109, and a second insulating layer 110. The first buffer layer 107, the second substrate 108, the second buffer layer 109, and the second insulating layer 110 are all located between the first substrate 101 and the gate trace 102. The first buffer layer 107 is disposed on the first substrate 101, the second substrate 108 is disposed on a surface of the first buffer layer 107 away from the first substrate 101, the second buffer layer 109 is disposed on a surface of the second substrate 108 away from the first substrate 101, and the second insulating layer 110 is disposed on a surface of the second buffer layer 109 away from the first substrate 101.

[0061] It should be noted that the display panel 10 provided in the embodiment of the present application is mainly applied to a dual-substrate display panel 10. Specifically, the second buffer layer 109 and the second insulating layer 110 can be provided as two layers, thereby better serving as an insulating film layer.

[0062] The display panel provided in an embodiment of the present application includes a first substrate, a gate trace, and a stress release layer. The orthographic projection of the junction of the two portions of the gate trace on the first substrate is located within the orthographic projection of the stress release layer on the first substrate. When the display panel is bent, the gate trace primarily breaks at the junction of the two portions. Providing a stress release layer directly above the junction of the two portions of the gate trace not only changes the position of the neutral plane of the display panel but also disperses or absorbs stress, thereby preventing the gate trace from breaking at the junction due to stress concentration. This, in turn, prevents horizontal stripes from appearing on the display panel, thereby improving the yield of the display panel.

[0063] The present application also provides a display device, comprising a frame and a display panel 10. The frame is configured to support the display panel 10. The display panel 10 has been described in detail in the above embodiments, and therefore, the display panel 10 will not be described in detail in the present application.

[0064] In the embodiments of the present application, the type of display device is not limited. The display device of various embodiments of the present invention can be at least one of a smartphone, a tablet personal computer, a mobile phone, a video phone, an e-book reader, a desktop PC, a laptop PC, a netbook computer, a workstation, a server, a personal digital assistant, a portable multimedia player, an MP3 player, a mobile medical device, a camera, a game console, a digital camera, a car navigation system, an electronic billboard, an ATM, or a wearable device.

[0065] The display device provided in an embodiment of the present application includes a first substrate, a gate trace, and a stress release layer. The orthographic projection of the junction of the two portions of the gate trace on the first substrate is located within the orthographic projection of the stress release layer on the first substrate. When the display panel is bent, the gate trace primarily breaks at the junction of the two portions. Providing a stress release layer directly above the junction of the two portions of the gate trace not only changes the position of the neutral plane of the display panel but also disperses or absorbs stress, thereby preventing the gate trace from breaking at the junction due to stress concentration. This, in turn, prevents horizontal stripes from appearing on the display panel, thereby improving the yield of the display panel.

[0066] 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 present application. The description of the above embodiments is only used to help understand the technical solutions and core ideas 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 make equivalent replacements for some of the technical features therein. 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: The display panel includes a display area and a non-display area located on one side of the display area, wherein the non-display area is provided with an R angle. The display panel includes: a first substrate; a gate wiring, the gate wiring being provided on the first substrate; A stress release layer, the stress release layer being provided on a side of the gate wiring away from the first substrate; wherein, The gate trace includes a first portion and a second portion extending in different directions, the first portion and the second portion are connected at the R angle, and an orthographic projection of the connection between the first portion and the second portion on the first substrate is located within an orthographic projection of the stress release layer on the first substrate, so as to prevent the gate trace from being broken at the connection between the first portion and the second portion; The display panel also includes a pixel definition layer and a pixel layer. The pixel definition layer is arranged on the same layer as the stress release layer, and the pixel definition layer is provided with multiple first grooves. The pixel layer fills the first grooves. The distance between the side of the stress release layer close to the pixel definition layer and the side of the pixel definition layer close to the stress release layer is greater than 45 microns.

2. The display panel according to claim 1, wherein The display panel further includes a first insulating layer, which is disposed between the gate wiring and the stress release layer. A surface of the stress release layer close to the first insulating layer is provided with a plurality of recessed portions, and the first insulating layer fills the recessed portions.

3. The display panel according to claim 2, wherein: The recessed portions are spaced at equal intervals.

4. The display panel according to claim 2, wherein: The intervals between the recessed portions increase sequentially along a direction from the pixel definition layer to the stress release layer.

5. The display panel according to claim 1, wherein: The stress release layer includes a first stress release sublayer, a second stress release sublayer, and a third stress release sublayer stacked in sequence, and the first stress release sublayer, the second stress release sublayer, and the third stress release sublayer have different elastic moduli.

6. The display panel according to claim 5, wherein: The elastic modulus of the first stress release sub-layer is smaller than that of the second stress release sub-layer, and the elastic modulus of the third stress release sub-layer is smaller than that of the second stress release sub-layer.

7. The display panel according to claim 5, wherein: A second groove is provided on a side of the first stress release sublayer close to the second stress release sublayer, and the second stress release sublayer fills the second groove. A third groove is provided on a side of the third stress release sublayer close to the second stress release sublayer, and the second stress release sublayer fills the third groove.

8. The display panel according to claim 1, wherein: The display panel also includes a first buffer layer, a second substrate, a second buffer layer and a second insulating layer, wherein the first buffer layer, the second substrate, the second buffer layer and the second insulating layer are all located between the first substrate and the gate wiring, the first buffer layer is arranged on the first substrate, the second substrate is arranged on a side of the first buffer layer away from the first substrate, the second buffer layer is arranged on a side of the second substrate away from the first substrate, and the second insulating layer is arranged on a side of the second buffer layer away from the first substrate.

9. A display device, comprising a frame and the display panel according to any one of claims 1 to 8, wherein the frame is used to support the display panel.

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