Display panel and display device

Abstract

The invention relates to a display panel and a display device. The display panel comprises a display area and a first non-display area, and the first non-display area is arranged on at least one side of the display area; the display panel comprises a flexible substrate, a plurality of inorganic layers, at least one first groove and a packaging layer, and the flexible substrate is arranged corresponding to the display area and the first non-display area; the multiple inorganic layers are located on one side of the flexible substrate, the multiple inorganic layers are arranged in a stacked mode, and the inorganic layers extend to the first non-display area from the display area; the at least one first groove is located in the first non-display area, and the at least one first groove completely penetrates through the inorganic layers and partially penetrates through the flexible substrate; the packaging layer covers the sides, away from the flexible substrate, of the inorganic layers, and the packaging layer further covers the surface of the side, away from the flexible substrate, of the inner wall of the first groove.

Description

Technical Field

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

[0002] With the development of information technology, display panels play an increasingly indispensable role in people's lives. During use, people pursue a high screen-to-body ratio and put forward higher and higher requirements for narrowing the borders of display panels.

[0003] Manufacturers achieve narrow bezel design by bending the non-display area (or even the edge of the display area) of the display panel to the back. However, the stress generated by the bending will cause cracks in the film layer at the bezel, which can easily lead to package failure. If the cracks continue to extend inward, it will affect the screen display. Summary of the invention

[0004] Based on this, it is necessary to provide a display panel and a display device that can prevent crack extension to improve packaging effect in order to solve the above technical problems.

[0005] In a first aspect, the present application provides a display panel, including a display area and a first non-display area, wherein at least one side of the display area is provided with the first non-display area, and the display panel includes:

[0006] A flexible substrate, arranged corresponding to the display area and the first non-display area;

[0007] A plurality of inorganic layers are located on one side of the flexible substrate, the plurality of inorganic layers are stacked, and the inorganic layers extend from the display area to the first non-display area;

[0008] at least one first groove, located in the first non-display area, wherein the at least one first groove completely penetrates the plurality of inorganic layers and partially penetrates the flexible substrate; and

[0009] The encapsulation layer covers a side of the plurality of inorganic layers away from the flexible substrate, and the encapsulation layer also covers a surface of a side of the inner wall of the first groove away from the flexible substrate.

[0010] The above-mentioned display panel has a first groove set in the first non-display area. The first groove completely penetrates multiple inorganic layers and partially penetrates the flexible substrate. The first groove can reduce the stress generated during bending, block the extension of cracks, extend the water and oxygen intrusion path, and effectively improve the packaging effect.

[0011] In one embodiment, the first non-display area is provided with at least two first grooves, and the at least two first grooves are spaced apart and distributed in a direction away from the display area;

[0012] Preferably, along a cross section parallel to a first direction, a cross section of the first groove is in an inverted trapezoidal shape, wherein the first direction is perpendicular to an extension direction of the display area and parallel to a plane where the flexible substrate is located;

[0013] Preferably, any plane parallel to the first direction intersects with at least one first groove in the first non-display area.

[0014] In this way, on the one hand, the stress generated by the display panel during the bending process is buffered and dispersed by at least two first grooves, which increases the stress buffering path, avoids stress concentration, and avoids damage to the display panel caused by excessive local force; on the other hand, at least two first grooves limit the extension of cracks in the flexible substrate, which can enhance the effect of blocking cracks and protect the display area from crack damage; on the other hand, at least two first grooves further increase the difficulty of water and oxygen intrusion, and it is more difficult for external moisture and oxygen to enter the display area, which is beneficial to improving the waterproof and antioxidant properties of the display panel.

[0015] In one embodiment, the first groove extends along a second direction, the extension path of the first groove is a straight line or a curve, and the second direction intersects the first direction;

[0016] Preferably, the extension length of the first groove is greater than or equal to the extension length of the display area;

[0017] Preferably, the second direction is parallel to an extension direction of the display area.

[0018] In this way, the first groove extends continuously along the second direction, and the first groove is more adapted to the bending direction of the first non-display area, which is beneficial to improving the bending life of the display panel.

[0019] In one embodiment, the first groove includes a plurality of first sub-grooves arranged along a second direction, and the second direction intersects the first direction;

[0020] Preferably, the first sub-groove comprises a first groove portion and a second groove portion connected to each other, and a connection between the first groove portion and the second groove portion forms a first angle;

[0021] Preferably, one end of the first groove portion is connected to one end of the second groove portion to form the first angle; the first groove portion extends along the first direction, or the first angle is set toward the first direction;

[0022] Preferably, any plane parallel to the first direction intersects with at least one of the first sub-grooves in the first non-display area;

[0023] Preferably, the first groove portion extends along the first direction, and the second groove portion extends along the second direction;

[0024] Preferably, in two adjacent first grooves along the first direction, the first angles of the first sub-grooves are in opposite directions;

[0025] Preferably, the second direction is parallel to an extension direction of the display area.

[0026] In this way, on the one hand, when the display panel is bent, each first sub-groove acts as an independent stress release point, and the first non-display area has multiple stress release points, which can more effectively disperse and relieve the bending stress of the display panel, and optimize the bending ability of the display panel, so that the display panel can adapt to various bending shapes and reduce cracks generated during the bending process; on the other hand, multiple first sub-grooves form a denser crack blocking network. When cracks occur in the first non-display area, multiple first sub-grooves block the cracks, which increases the difficulty of the cracks extending to the display area; on the other hand, the setting of multiple first sub-grooves makes the path for water and oxygen to invade the display area more complicated, and the invasion of water and oxygen is more difficult, which can further improve the waterproof and antioxidant properties of the display panel.

[0027] In one embodiment, the first non-display area is provided with a second groove, the second groove at least completely penetrates the top inorganic layer of the plurality of inorganic layers away from the flexible substrate, and the encapsulation layer covers the inner wall of the second groove on the side away from the flexible substrate;

[0028] Preferably, along a cross section parallel to the first direction, at least one of the first grooves is respectively provided on both sides of the second groove;

[0029] Preferably, along a cross section parallel to the first direction, a cross-sectional shape of the second groove is an inverted trapezoid.

[0030] In this way, on the one hand, setting a second groove at the packaging boundary of the first non-display area is conducive to reducing the packaging difficulty, so as to make the packaging process simpler and more controllable; on the other hand, at least one first groove is set on both sides of the second groove, and the two first grooves can prevent the crack expansion on both sides of the second groove, thereby further improving the packaging effect.

[0031] In this way, the accumulation of bending stress can be effectively reduced, the extension of cracks can be prevented, and the packaging effect can be effectively improved.

[0032] In one embodiment, the plurality of inorganic layers include a first inorganic layer, a second inorganic layer and a third inorganic layer which are sequentially stacked in a direction away from the flexible substrate, and the second groove completely penetrates the third inorganic layer.

[0033] In this way, the second groove at least completely penetrates the topmost inorganic layer among the multiple inorganic layers, which can reduce the stress accumulation generated during bending and prevent crack extension, thereby effectively improving the packaging effect.

[0034] In one embodiment, the flexible substrate includes a first flexible substrate and a second flexible substrate, the second flexible substrate is disposed on a side of the first flexible substrate close to the inorganic layer, and the first groove completely penetrates the second flexible substrate.

[0035] In this way, the first groove completely penetrates the second flexible substrate, which can reduce the stress generated during bending and prevent crack extension, thereby effectively improving the packaging effect.

[0036] In one of the embodiments, the display panel further includes a third groove, wherein the third groove is arranged between at least one of the first grooves and the display area; the third groove includes a plurality of second sub-grooves arranged along a second direction;

[0037] Preferably, the second sub-groove comprises a third groove portion and a fourth groove portion connected to each other, and a connection between the third groove portion and the fourth groove portion forms a second angle;

[0038] Preferably, one end of the third groove portion is connected to one end of the fourth groove portion to form the second angle; the third groove portion extends along the first direction, or the second angle is set toward the first direction;

[0039] Preferably, the first direction is perpendicular to the extension direction of the display area and parallel to the plane where the flexible substrate is located, and the second direction is parallel to the extension direction of the display area; any plane parallel to the first direction intersects with at least one of the second sub-grooves;

[0040] Preferably, the third groove portion extends along the first direction, and the fourth groove portion extends along the second direction;

[0041] Preferably, in two adjacent third grooves along the first direction, the second included angles of the second sub-grooves are in opposite directions;

[0042] Preferably, the third groove completely penetrates the third inorganic layer of the plurality of inorganic layers.

[0043] In this way, on the one hand, a third groove is arranged at the periphery of the display area, and the stress at the periphery of the display area is buffered and released by the multiple second sub-grooves of the third groove, thereby reducing cracks generated at the periphery of the display area; on the other hand, the multiple second sub-grooves form a grid to block cracks at the periphery of the display area, thereby preventing cracks from entering the display area; on still another hand, the third groove makes the path for water and oxygen to invade the display area more complicated, thereby further improving the waterproof and antioxidant properties of the display panel.

[0044] In one embodiment, the display panel further includes:

[0045] an organic film layer, located on a side of the plurality of inorganic layers away from the flexible substrate, the organic film layer being arranged in the display area and extending to a portion of the first non-display area outside the display area, and the organic film layer covering a surface of a side of an inner wall of the third groove away from the flexible substrate;

[0046] A first dam and a second dam are arranged on a side of the organic film layer away from the flexible substrate, the first dam and the second dam are arranged in sequence in a direction away from the display area, and the display area is located on a side of the first dam away from the second dam;

[0047] a metal layer, disposed on the inner side of the first dam, the metal layer covering the organic film layer in the display area;

[0048] The encapsulation layer also covers the organic film layer, the first dam, the second dam, and a surface of the metal layer away from the flexible substrate;

[0049] Preferably, the material of the encapsulation layer includes an inorganic material;

[0050] Preferably, the third groove is located between the first dam and the second dam.

[0051] In this way, the packaging effect can be further improved.

[0052] In a second aspect, the present application also provides a display device, comprising the above-mentioned display panel.

[0053] The above-mentioned display device, by setting a first groove in the first non-display area, the first groove completely penetrates multiple inorganic layers and partially penetrates the flexible substrate. The first groove can reduce the stress generated during bending, and can also prevent crack extension, extend the water and oxygen intrusion path, and effectively improve the packaging effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the conventional technology, the drawings required for use in the embodiments or the conventional technology descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0055] Figure 1 A schematic plan view of a display panel of the related art of the present application;

[0056] Figure 2 for Figure 1 Structural diagram of the OO section;

[0057] Figure 3 is a schematic plan view of a display panel according to an exemplary embodiment of the present application;

[0058] Figure 4 is a schematic plan view of a display panel according to another exemplary embodiment of the present application;

[0059] Figure 5 is a schematic plan view of a display panel according to another exemplary embodiment of the present application;

[0060] Figure 6 for Figure 5 Schematic diagram of the structure of the PP section;

[0061] Figure 7 A projection diagram of a first groove formed on a flexible substrate in an exemplary embodiment of the present application;

[0062] Figure 8 A projection diagram of a first groove formed on a flexible substrate in another exemplary embodiment of the present application;

[0063] Fig. 9 is a projection diagram of a first groove formed on a flexible substrate in another exemplary embodiment of the present application;

[0064] Fig.10 is a projection diagram of a first groove formed on a flexible substrate in another exemplary embodiment of the present application;

[0065] Fig.11 is a projection diagram of a first groove formed on a flexible substrate in another exemplary embodiment of the present application;

[0066] Fig.12 is a schematic diagram of a first sub-groove in an exemplary embodiment of the present application;

[0067] Fig.13 is a schematic diagram of a first sub-groove in another exemplary embodiment of the present application;

[0068] Fig.14 is a projection diagram of a first groove formed on a flexible substrate in another exemplary embodiment of the present application;

[0069] Fig.15 is a schematic diagram of a first sub-groove in another exemplary embodiment of the present application;

[0070] Fig.16 is a projection diagram of a first groove formed on a flexible substrate in another exemplary embodiment of the present application;

[0071] Fig.17is a schematic diagram of a second sub-groove of a third groove in an exemplary embodiment of the present application;

[0072] Fig.18 is a schematic diagram of a second sub-groove of a third groove in an exemplary embodiment of the present application;

[0073] Fig.19 is a schematic diagram of a second sub-groove of a third groove in an exemplary embodiment of the present application;

[0074] Fig. 20 A projection diagram of a second groove formed on a flexible substrate in an exemplary embodiment of the present application;

[0075] Fig.21 A projection diagram of a second groove formed on a flexible substrate in another exemplary embodiment of the present application;

[0076] Fig. 22 This is a projection diagram of a second groove formed on a flexible substrate in yet another exemplary embodiment of the present application.

[0077] Description of reference numerals:

[0078] 11', display area; 12'- non-display area; 21', flexible substrate; 22', inorganic layer; 23', encapsulation layer; 30', groove; 40', encapsulation boundary;

[0079] 100, flexible substrate; 110, first flexible substrate; 120, first barrier layer; 130, second flexible substrate; 140, second barrier layer; 200, inorganic layer; 210, first insulating layer; 220, second insulating layer; 230, interlayer insulating layer; 300, encapsulation layer; 400, first groove; 410, first sub-groove; 411, first groove portion; 412, second groove portion; α1, first angle; 500, second groove; 600, third groove; 610, second sub-groove; 611, third groove portion; 612, fourth groove portion; α2, second angle; 710, organic film layer; 720, first dam; 730, second dam; 740, metal layer; AA, display area; VA1, first non-display area; VA2, second non-display area; S, encapsulation boundary; X, first direction; Y, second direction. DETAILED DESCRIPTION

[0080] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. Preferred embodiments of the present invention are provided in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0081] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0082] In this document, spatially related terms such as "upper" and "lower" are defined with reference to the accompanying drawings. Therefore, it will be understood that "upper" and "lower" are used interchangeably. It will be understood that when a layer is referred to as being "on" another layer, it can be directly formed on the other layer, or intervening layers may also be present. Therefore, it will be understood that when a layer is referred to as being "directly on" another layer, there are no intervening layers interposed therebetween.

[0083] In the accompanying drawings, the sizes of layers and regions may be exaggerated for clarity. It is understood that when a layer or element is referred to as being "on" another layer or substrate, the layer or element may be directly on the other layer or substrate, or there may be intervening layers. In addition, it is also understood that when a layer is referred to as being "between" two layers, the layer may be the only layer between the two layers, or there may be one or more intervening layers. In addition, the same reference numerals always represent the same elements.

[0084] Hereinafter, although terms such as "first", "second", etc. may be used to describe various components, these components are not necessarily limited to the above terms. The above terms are only used to distinguish one component from another component. It will also be understood that expressions used in the singular form include plural expressions, unless the expression in the singular form has a significantly different meaning in the context. In addition, in the following embodiments, it will also be understood that the terms "comprising" and / or "having" used herein illustrate the presence of the stated features or components, but do not exclude the presence or addition of one or more other features or components.

[0085] In the following embodiments, when a layer, region, or element is "connected", it can be interpreted that the layer, region, or element is not only directly connected but also connected through other constituent elements placed therebetween. For example, when a layer, region, element, etc. is described as being connected or electrically connected, the layer, region, element, etc. can be connected or electrically connected not only directly or directly, but also through another layer, region, element, etc. placed therebetween.

[0086] It should also be understood that when interpreting an element, even if not explicitly described, the element is interpreted as including a range of error, which should be within the acceptable deviation range of the specific value determined by those skilled in the art. For example, "approximately", "approximately" or "substantially" can mean within one or more standard deviations, which are not limited here.

[0087] Furthermore, in the specification, the phrase “planar distribution schematic diagram” refers to a drawing when a target portion is viewed from above, and the phrase “cross-sectional schematic diagram” refers to a drawing when a section taken by vertically cutting the target portion is viewed from the side.

[0088] In addition, the drawings are not drawn to a 1:1 scale, and the relative sizes of the elements in the drawings are drawn only as examples and not necessarily according to the true scale.

[0089] For related solutions, see Figure 1 and Figure 2 The display panel is provided with a display area 11' and a non-display area 12'. The display panel includes a stacked flexible substrate 21', a multi-layer inorganic layer 22' and an encapsulation layer 23'. The top inorganic layer 22' away from the flexible substrate 21' in the multi-layer inorganic layer 22' is provided with a groove 30'. The groove 30' is arranged at the encapsulation boundary 40' corresponding to the non-display area 12'. When the non-display area 12' (or even the edge of the display area 11') of the display panel is bent to the back, due to the bending stress, the inorganic layer 22' is prone to cracks. The groove 30' can prevent the cracks from continuing to extend inward to the display area 11'. As described in the background technology, this structure still cannot effectively prevent cracks. The continuous inward extension of the cracks will affect the display of the display area 11' and easily lead to encapsulation failure. The inventors have found that the reason for this problem is that due to the existence of a packaging boundary 40' in the frame area, the inorganic layer 22' at the packaging boundary 40' cannot be completely removed, that is, the groove 30' cannot completely penetrate all the inorganic layers 22'. Therefore, when the non-display area 12' (even the edge of the display area 11') of the display panel is bent to the back, in addition to the topmost inorganic layer 22', other inorganic layers 22' will also have cracks, thereby affecting the display of the display area 11' and causing packaging failure.

[0090] Based on the above reasons, the present invention provides a display panel and a display device. By setting a first groove in the non-display area, the first groove completely penetrates multiple inorganic layers and partially penetrates the flexible substrate. The first groove can reduce the stress generated during bending and prevent crack extension, thereby effectively improving the packaging effect.

[0091] First, see Figure 3 , Figure 4 or Figure 5As shown, an embodiment of the present application provides a display panel, the display panel includes a display area AA and a first non-display area VA1, and the first non-display area VA1 is provided on at least one side of the display area AA. In some embodiments, the first non-display area VA1 is provided on opposite sides of the display area AA along the first direction X, and the second non-display area VA2 is provided on opposite sides of the display area AA along the second direction Y. In this embodiment, the first direction X is perpendicular to the extension direction of the display area AA and parallel to the plane where the flexible substrate 100 is located, wherein the first direction X and the second direction Y intersect. Preferably, the second direction Y is parallel to the extension direction of the display area AA, and the first direction X and the second direction Y are arranged perpendicularly.

[0092] The first non-display area VA1 is an IC side frame of the display panel. The so-called IC side frame refers to the gate fan-out line of the display panel being led out from the first non-display area VA1.

[0093] like Figure 6 As shown, the display panel includes a flexible substrate 100, a plurality of inorganic layers 200, at least one first groove 400 and an encapsulation layer 300. The flexible substrate 100 is arranged corresponding to the display area AA and the first non-display area VA1. The plurality of inorganic layers 200 are located on one side of the flexible substrate 100, and the plurality of inorganic layers 200 are stacked and arranged, and the inorganic layers 200 extend from the display area AA to the first non-display area VA1. At least one first groove 400 is located in the first non-display area VA1, and at least one first groove 400 completely penetrates the plurality of inorganic layers 200 and partially penetrates the flexible substrate 100, for example, Figure 3 or Figure 4 As shown, the first non-display area VA1 may be provided with a first groove 400, such as Figure 5 As shown, the first non-display area VA1 may be provided with two first grooves 400. In other embodiments, the first non-display area VA1 may be provided with three first grooves 400 or more first grooves 400. The encapsulation layer 300 covers the side of the plurality of inorganic layers 200 away from the flexible substrate 100, and the encapsulation layer 300 also covers the inner wall of the first groove 400 away from the flexible substrate 100.

[0094] The above-mentioned display panel sets a first groove 400 in the first non-display area VA1. The first groove 400 completely penetrates the multiple inorganic layers 200 and partially penetrates the flexible substrate 100. The first groove 400 can reduce the stress generated during bending, block the extension of cracks, extend the water and oxygen intrusion path, and effectively improve the packaging effect.

[0095] It can be understood that the multiple inorganic layers 200 are used to support and protect the components inside the display panel. The multiple inorganic layers 200 are rigid layers. The flexibility of the inorganic layers 200 is worse than that of the flexible substrate 100. When the display panel is bent, the inorganic layers 200 generate greater stress during the bending process. The first groove 400 completely penetrates the multiple inorganic layers 200, which can disperse and reduce the stress on the inorganic layers 200 when bending, and reduce stress concentration causing cracks in the inorganic layers 200.

[0096] During the bending process of the display panel or during the use of the display panel, due to various reasons (such as external impact or material aging), tiny cracks may be generated in the display panel. If these cracks are not controlled, they may extend rapidly and eventually lead to the failure of the entire display area AA. In this embodiment, a first groove 400 is set in the first non-display area VA1, and the first groove 400 penetrates the multiple inorganic layers 200 and extends to the flexible substrate 100. The multiple inorganic layers 200 and part of the flexible substrate 100 are disconnected at the first groove 400. The extension path of the cracks in the multiple inorganic layers 200 or the cracks generated in the flexible substrate 100 is interrupted at the first groove 400. The first groove 400 limits the cracks from continuing to extend, thereby preventing the cracks in the first non-display area VA1 from extending to the display area AA.

[0097] In addition, the first groove 400 prolongs the path for water and oxygen to invade the display area AA, and increases the difficulty of water and oxygen to invade the display area AA, so as to protect the display panel from the external environment (such as water and oxygen), thereby improving the packaging effect and extending the service life of the product. At the same time, the provision of the first groove 400 can also increase the packaging area of ​​the packaging layer 300, thereby enhancing the packaging firmness of the packaging layer 300, preventing the packaging layer 300 from falling off or being damaged during the bending process, and further improving the durability and reliability of the display panel.

[0098] In one embodiment, if Figure 5 and Figure 6 As shown, the first non-display area VA1 is provided with at least two first grooves 400, and the at least two first grooves 400 are spaced apart in a direction away from the display area AA. Specifically, the at least two first grooves 400 are spaced apart along the first direction X. In this way, on the one hand, the stress generated by the display panel during the bending process is buffered and dispersed by the at least two first grooves 400, which increases the stress buffering path, avoids stress concentration, and avoids damage to the display panel caused by excessive local force; on the other hand, the at least two first grooves 400 limit the extension of cracks in the flexible substrate 100, which can enhance the effect of blocking cracks and protect the display area AA from damage by cracks; on the other hand, the at least two first grooves 400 further increase the difficulty of water and oxygen invasion, and it is more difficult for external moisture and oxygen to enter the display area AA, which is conducive to improving the waterproof performance and anti-oxidation performance of the display panel.

[0099] Preferably, if Figure 6 As shown, along the cross section parallel to the first direction X, the cross section of the first groove 400 is in an inverted trapezoidal shape, wherein the first direction X is perpendicular to the extension direction of the display area AA and parallel to the plane where the flexible substrate 100 is located. In this way, when the display panel is bent, the inverted trapezoidal first groove 400 can more effectively absorb and disperse stress, thereby improving the ability of the display panel to resist deformation and fracture; and the inverted trapezoidal groove is easy to process, which helps to optimize the manufacturing process of the first groove 400.

[0100] Preferably, refer to Figure 7 , Figure 8 , Fig. 9 , Fig.10 , Fig.11 , Fig.14 or Fig.16 , any plane of the display panel parallel to the first direction X intersects with at least one first groove 400 of the first non-display area VA1. In this way, in any plane parallel to the first direction X, the extension of the crack in the first non-display area VA1 is restricted by the first groove 400, and the first groove 400 prevents the crack from extending to the display area AA, thereby preventing cracks from being generated in the display area AA.

[0101] In one embodiment, the first groove 400 extends along the second direction Y, the extension path of the first groove 400 is a straight line or a curve, and the second direction Y intersects the first direction X. In this way, the first groove 400 extends continuously along the second direction 400, and the first groove 400 is more adapted to the bending direction of the first non-display area VA1, which can better adapt to the bending deformation of the display panel, which is beneficial to improving the bending life of the display panel.

[0102] In one example, referring to Figure 7 As shown, the first groove 400 is a linear groove extending along the second direction Y; thus, the manufacturing difficulty of the first groove 400 is lower.

[0103] In another example, referring to Figure 8 As shown, the first groove 400 is a curved groove extending along the second direction Y. In this way, the first groove 400 can disperse multi-dimensional stress, and the first groove 400 can not only disperse bending stress, but also resist distortion or external pressure.

[0104] Preferably, the extension length of the first groove 400 is greater than or equal to the extension length of the display area AA. In this way, the display area AA is protected by the first groove 400, and the first groove 400 limits the extension of the crack of the first non-display area VA1 to the display area AA.

[0105] Preferably, the second direction Y is parallel to the extension direction of the display area AA.

[0106] In one embodiment, the first groove 400 penetrates the first non-display area VA1 along the second direction Y, that is, the extension length of the first groove 400 along the second direction Y is the same as the length of the first non-display area VA1. In this way, the multiple inorganic layers 200 and part of the flexible substrate 100 at the first groove 400 are missing, and a continuous and penetrating crack blocking barrier is formed in the first non-display area VA1. Even if cracks appear in the first non-display area VA1, the extension of these cracks is hindered by the first groove 400, so that they cannot extend to the display area AA.

[0107] In one embodiment, referring to Fig. 9 , Fig.10 , Fig.11 , Fig.14 or Fig.16 As shown, the first groove 400 includes a plurality of first sub-grooves 410 arranged along a second direction Y, and the second direction Y intersects with the first direction X.

[0108] In this way, on the one hand, when the display panel is bent, each first sub-groove 410 acts as an independent stress release point, and the first non-display area VA1 has multiple stress release points, which more effectively disperses and relieves the bending stress of the display panel, optimizes the bending ability of the display panel, so that the display panel can adapt to various bending forms and reduce cracks generated during the bending process; on the other hand, multiple first sub-grooves 410 form a denser crack blocking network. When cracks are generated in the first non-display area VA1, multiple first sub-grooves 410 block the cracks, increasing the difficulty of the cracks extending to the display area AA; on the other hand, the setting of multiple first sub-grooves 410 makes the path of water and oxygen invading the display area AA more complicated, and the difficulty of water and oxygen invading is greater, which can further improve the waterproof performance and anti-oxidation performance of the display panel. At the same time, multiple first sub-grooves 410 can further increase the packaging area of ​​the packaging layer 300, enhance the packaging firmness of the packaging layer 300, and improve the durability and reliability of the display panel.

[0109] In some embodiments, reference Fig.12 , Fig.13 or Fig.15 The first sub-groove 410 includes a first groove portion 411 and a second groove portion 412 connected to each other, and the connection between the first groove portion 411 and the second groove portion 412 forms a first angle α1. In this way, when the display panel is bent, the stress at the first angle α1 can be more effectively dispersed to the surrounding film layer to avoid stress concentration and cracks.

[0110] The first groove portion 411 may intersect with the second groove portion 412, for example, the first groove portion 411 and the second groove portion 412 may be connected to form a "+" shape or an "X" shape. Alternatively, one end of the first groove portion 411 may be connected to the middle area of ​​the second groove portion 412, for example, the first groove portion 411 and the second groove portion 412 may be connected to form a "T" shape. Alternatively, one end of the first groove portion 411 may be connected to one end of the second groove portion 412.

[0111] In some embodiments, one end of the first groove portion 411 and one end of the second groove portion 412 form a first angle α1; the first groove portion 411 extends along the first direction X, or the first angle α1 is arranged toward the first direction X. For example, the first groove portion 411 and the second groove portion 412 can be connected to form an "L" shape, an "inverted L" shape, a ">" shape, or a "<" shape.

[0112] In one example, referring to Fig.12 or Fig.13 The first groove portion 411 and the second groove portion 412 are connected to form an "L" shape or an "inverted L" shape. The first sub-groove 410 is a right-angle groove arranged along the second direction Y.

[0113] In one example, referring to Fig.15 , the first groove portion 411 and the second groove portion 412 are connected to form a ">" shape or a "<" shape. The first angle α1 of the first sub-groove 410 is set toward the first direction X. Specifically, the first angle α1 set toward the first direction X can be set toward the first non-display area VA1, so that the first sub-groove 410 can better release the bending stress of the display panel and reduce the structural damage caused by stress concentration.

[0114] In some embodiments, any plane of the display panel parallel to the first direction X intersects with at least one first sub-groove 41 of the first non-display area VA1 .

[0115] For example, the first non-display area VA1 may be provided with a plurality of first grooves 400 spaced apart along the first direction X. Any plane parallel to the first direction X intersects at least one first sub-groove 410. In this way, it is ensured that the crack of the first sub-groove 410 is blocked by at least one first sub-groove 410 on the extension path to the display area AA, and at least one first sub-groove 410 limits the extension of the crack, and the display area AA is protected by the cooperation of the plurality of first grooves 400, so as to prevent the crack from extending from one side of the plurality of first grooves 400 to the display area AA.

[0116] In some embodiments, the first groove portion 411 extends along the first direction X, and the second groove portion 412 extends along the second direction Y; in two adjacent first grooves 400 along the first direction X, the first angles α1 of the first sub-grooves 410 are in opposite directions.

[0117] The second direction Y is parallel to the extension direction of the display area AA.

[0118] In one example, referring to Fig. 9 The first non-display area VA1 includes two first grooves 400, a first groove 400-1 and a first groove 400-2, a first sub-groove 410-1 of the first groove 400-1 and a first sub-groove 410-2 of the first groove 400-2 are staggered along the first direction X, a first groove portion 411 and a second groove portion 412 of the first sub-groove 410-1 are connected to form an "L" shape, and a first groove portion 411 and a second groove portion 412 of the first sub-groove 410-2 are connected to form an "inverted L" shape. Along any cross section parallel to the first direction X, there is a second groove portion 412 of the first sub-groove 410-1, or there is a second groove portion 412 of the first sub-groove 410-2.

[0119] In one example, referring to Fig.10 The first non-display area VA1 further includes a first groove 400-3, which is disposed on a side of the first groove 400-2 away from the first groove 400-1 along the first direction X. The first sub-grooves 410-3 of the first groove 400-3 are connected in an "L" shape.

[0120] In one example, referring to Fig.11 The first non-display area VA1 further includes a first groove 400 - 4 , and the first sub-grooves 410 - 4 of the first groove 400 - 4 are connected to form an “inverted L” shape.

[0121] In some embodiments, reference Fig.14 , Fig.15 The first non-display area VA1 includes a plurality of first grooves 400, and the first sub-grooves 410 of adjacent first grooves 400 are staggered along the first direction X. The first groove portion 411 and the second groove portion 412 of the first sub-groove 410 are connected to form a ">" shape or a "<" shape. Along any cross section parallel to the first direction X, there is a first sub-groove 410 of the first groove 400.

[0122] The opening directions of the first angle α1 of the first sub-grooves 410 of adjacent first grooves 400 are the same. Alternatively, the opening directions of the first angle α1 of the first sub-grooves 410 of adjacent first grooves 400 are opposite.

[0123] The first angle α1 of the first sub-grooves 410 adjacent to each other in the first groove 400 along the second direction D2 has the same opening direction; or, the first angle α1 of the first sub-grooves 410 adjacent to each other in the first groove 400 along the second direction D2 has opposite opening directions.

[0124] In one example, referring to Fig.14 , Fig.15The first non-display area VA1 includes a first groove 400-1, a first groove 400-2, a first groove 400-3, a first groove 400-4, a first groove 400-5, and a first groove 400-6. The first sub-grooves 410 of each first groove 400 are in a “>” shape, and the opening direction of the angle of the first sub-grooves 410 faces the first non-display area VA1.

[0125] In some embodiments, reference Fig.16 , the first sub-groove 410 is a strip-shaped groove extending along the second direction Y. The first non-display area VA1 includes a first groove 400-1, a first groove 400-2, and a first groove 400-3 arranged at intervals along the first direction D1. The first sub-groove 410-1 of the first groove 400-1 and the first sub-groove 410-2 of the first groove 400-2 are staggered in the first direction X, and the first sub-groove 410-2 of the first groove 400-2 and the first sub-groove 410-3 of the first groove 400-3 are staggered in the first direction X. Along any cross section parallel to the first direction X, there is a first sub-groove 410 of the first groove 400.

[0126] The embodiments of the present application provide examples of various different shapes of the first groove 400. The specific shape of the first groove 400 can be flexibly designed (using a straight line, a curve or an irregular shape) according to the size and layout of the first non-display area VA1 and the overall design requirements of the display panel. The bending performance of the display panel can be improved by adjusting the shape and layout of the first groove 400.

[0127] In one embodiment, referring to Figure 5 , Figure 6 As shown, the first non-display area VA1 is provided with a second groove 500, and the second groove 500 at least completely penetrates the top inorganic layer 200 of the plurality of inorganic layers 200 away from the flexible substrate 100, and the encapsulation layer 300 covers the inner wall of the second groove 500 away from the flexible substrate 100. The surface of the side. In this embodiment, the second groove 500 is provided corresponding to the encapsulation boundary S of the first non-display area VA1. In this way, the second groove 500 is provided at the encapsulation boundary S of the first non-display area VA1, which is conducive to reducing the difficulty of encapsulation, so as to make the encapsulation process simpler and more controllable.

[0128] Preferably, at least one first groove 400 is disposed on both sides of the second groove 500 along a cross section parallel to the first direction X. In this way, the two first grooves 400 can prevent cracks generated in the inorganic layer 200 and the flexible substrate 100 on both sides of the second groove 500 from extending toward the display area AA, further improving the encapsulation effect.

[0129] like Figure 6As shown, the cross-sectional shape of the second groove 500 along the cross section parallel to the first direction X is an inverted trapezoid. In this way, the inverted trapezoidal groove is easy to process, which helps to optimize the manufacturing process of the second groove 500.

[0130] Specifically, Figure 6 As shown, the flexible substrate 100 includes a first flexible substrate 110 and a second flexible substrate 130, the second flexible substrate 130 is arranged on a side of the first flexible substrate 110 close to the inorganic layer 200, and the first groove 400 completely penetrates the second flexible substrate 130. In this way, the first groove 400 completely penetrates the multi-layer inorganic layer 200 and the second flexible substrate 130, which can not only reduce the stress generated during bending, but also prevent the cracks generated by the multi-layer inorganic layer 200 and the cracks generated by the second flexible substrate 130 from extending to the display area AA, which can better protect the display area AA, avoid connection in the display area AA, improve the display effect, and extend the service life of the display panel.

[0131] Specifically, Figure 6 As shown, the flexible substrate 100 further includes a first barrier layer 120, which is disposed between the first flexible substrate 110 and the second flexible substrate 130, and the first groove 400 completely penetrates the first barrier layer 120. In this way, the first groove 400 completely penetrates the first barrier layer 120, which can reduce the stress generated during bending and prevent cracks in the first barrier layer 120 from extending to the display area AA.

[0132] Specifically, Figure 6 As shown, the flexible substrate 100 further includes a second barrier layer 140, which is disposed between the second flexible substrate 130 and on one side close to the inorganic layer 200, and the first groove 400 completely penetrates the second barrier layer 140. In this way, the first groove 400 completely penetrates the second barrier layer 140, which can reduce the stress generated during bending and prevent the cracks of the second barrier layer 140 from extending to the display area AA.

[0133] Specifically, the plurality of inorganic layers 200 include a first inorganic layer 210, a second inorganic layer 220, and a third inorganic layer 230 stacked in sequence in a direction away from the flexible substrate 100, and the first groove 400 completely penetrates the first inorganic layer 210, the second inorganic layer 220, and the third inorganic layer 230. In this way, by making the first groove 400 completely penetrate the first inorganic layer 210, the second inorganic layer 220, and the third inorganic layer 230, and making the second groove 500 completely penetrate the third inorganic layer 230, the stress generated during bending can be reduced, the extension of cracks can be blocked, the water and oxygen intrusion path can be extended, and the packaging effect can be effectively improved.

[0134] In one embodiment, referring to Figure 6 , Fig. 20 , Fig.21 , Fig. 22 As shown, the display panel further includes a third groove 600, and the third groove 600 is disposed between at least one first groove 400 and the display area AA; Figure 17-Figure 22 As shown, the third groove 600 includes a plurality of second sub-grooves 610 arranged along the second direction Y. As shown in FIG.

[0135] It can be understood that the inorganic layer 200 has high hardness and brittleness, and when the display panel is bent, the inorganic layer 200 is prone to defects such as cracks or fractures. In this embodiment, the third groove 600 is set in the first non-display area VA1, so that, on the one hand, the stress of the periphery of the display area AA is buffered and released by the multiple second sub-grooves 610 of the third groove 600, reducing the cracks generated in the periphery of the display area AA; on the other hand, the multiple second sub-grooves 610 form a grid to block cracks on the periphery of the display area AA to prevent the cracks from entering the display area AA; on the other hand, the multiple second sub-grooves 610 of the third groove 600 form a hollow grid in the multiple inorganic layers 200, and the continuity of the multiple inorganic layers 200 in the first direction X is destroyed in the area where the multiple second sub-grooves 610 are set, avoiding the continuous stress accumulation of the multiple inorganic layers 200 in the process of bending the display panel, and can effectively reduce the cracks or fracture defects formed in the multiple inorganic layers 200 in the process of bending the display panel.

[0136] At the same time, the third groove 600 makes the path of water and oxygen intrusion into the display area AA more complicated, which can further improve the waterproof performance and anti-oxidation performance of the display panel. The third groove 600 can also further increase the packaging area of ​​the packaging layer 300, thereby enhancing the packaging firmness of the packaging layer 300 and improving the durability and reliability of the display panel.

[0137] In one embodiment, referring to Fig.17 , Fig.18 or Fig.19 As shown, the second sub-groove 610 includes a third groove portion 611 and a fourth groove portion 612 connected to each other, and the connection between the third groove portion 611 and the fourth groove portion 612 forms a second angle α2. In this way, the direction of the buffering stress of the second sub-groove 610 can be flexibly adjusted by setting the direction of the second angle α2, thereby optimizing the bending ability of the display panel, so that the display panel can adapt to various bending forms and reduce cracks generated during the bending process.

[0138] The third groove portion 611 may intersect with the second groove portion 412, for example, the third groove portion 611 and the fourth groove portion 612 may be connected to form a "+" shape or an "X" shape. Alternatively, one end of the third groove portion 611 may be connected to the middle area of ​​the fourth groove portion 612, for example, the third groove portion 611 and the fourth groove portion 612 may be connected to form a "T" shape. Alternatively, one end of the third groove portion 611 may be connected to one end of the fourth groove portion 612.

[0139] In one embodiment, one end of the third groove portion 611 is connected to one end of the fourth groove portion 612 to form a second angle α2; the third groove portion 611 extends along the first direction X, or the second angle α2 is arranged toward the first direction X. For example, the third groove portion 611 and the fourth groove portion 612 can be connected to form an "L" shape, an "inverted L" shape, a ">" shape, or a "<" shape.

[0140] In one embodiment, referring to Figure 6 , Fig. 20 , Fig.21 , Fig. 22 As shown, the first direction X is perpendicular to the extension direction of the display area AA and parallel to the plane where the flexible substrate 100 is located, and the second direction Y is parallel to the extension direction of the display area AA; any plane parallel to the first direction X intersects with at least one second sub-groove 610. In this way, when the display panel is bent, the stress of any plane parallel to the first direction X can be buffered by at least one second sub-groove 610, avoiding continuous accumulation of stress along the first direction X, and reducing cracks or fracture defects generated in the process of bending the display panel.

[0141] In one embodiment, referring to Fig. 20 As shown, two third grooves 600 are arranged outside the display area AA, and the two third grooves 600 are arranged in sequence in a direction away from the display area AA. Each third groove 600 includes a plurality of second sub-grooves 610 arranged at intervals along the second direction Y. The third groove portion 611 of the second sub-groove 610 extends along the first direction X, and the fourth groove portion 612 extends along the second direction Y; in two third grooves 600 adjacent to each other along the first direction X, the second angle α2 of the second sub-groove 610 is opposite in direction.

[0142] In one embodiment, referring to Fig.21 As shown, a plurality of third grooves 600 are arranged in sequence along the first direction X outside the display area AA. Each third groove 600 includes a plurality of second sub-grooves 610 arranged at intervals along the second direction Y, and one end of the third groove portion 611 of the second sub-groove 610 is connected to one end of the fourth groove portion 612 to form a second angle α2, and the second angle α2 is arranged toward the first direction X.

[0143] In one embodiment, referring to Fig. 22 As shown, refer to Fig.21 As shown, three third grooves 600 are arranged in sequence along the first direction X outside the display area AA. Each third groove 600 includes a plurality of second sub-grooves 610 arranged along the second direction Y, and the second sub-grooves 610 are strip grooves extending along the second direction Y.

[0144] In one embodiment, referring to Figure 6 As shown, the third groove 600 completely penetrates the third inorganic layer 230 at the top layer of the plurality of inorganic layers 200. In this way, the third inorganic layer 230 located at the side of the third groove 600 away from the display area AA is completely out of contact with the third inorganic layer 230 in the display area AA, thereby preventing cracks in the third inorganic layer 230 from spreading into the display area AA.

[0145] In particular, in the bending test, the crack or fracture defect of the top inorganic layer of the plurality of inorganic layers 200 is the largest. In this embodiment, the third groove 600 is set to penetrate the third inorganic layer 230, which can effectively reduce the crack or fracture defects generated in the third inorganic layer 230 during the bending process of the display panel. At the same time, the first inorganic layer 210 and the second inorganic layer 220 can provide good support for the display panel, which is conducive to improving the impact resistance of the display panel.

[0146] The display panel of this embodiment forms a continuous protective barrier along the second direction Y through the first groove 400. The first groove 400 blocks the extension path of the first non-display area VA1, preventing the cracks in the first non-display area VA1 from extending to the display area AA; the third groove 600 disconnects the continuity of the inorganic layer 200 along the first direction X, reducing the cracks or fracture defects of the inorganic layer 200 caused by the continuous accumulation of stress; the design of the first groove 400 and the third groove 600 makes the path of water and oxygen invading the display area AA more complicated, thereby improving the waterproof performance and anti-oxidation performance of the display panel. The design of the first groove 400 and the third groove 600 can also further increase the encapsulation area of ​​the encapsulation layer 300, thereby enhancing the encapsulation firmness of the encapsulation layer 300 and improving the durability and reliability of the display panel.

[0147] In one embodiment, referring to Figure 6 As shown, the display panel further includes an organic film layer 710, which is located on a side of the plurality of inorganic layers 200 away from the flexible substrate 100, and is disposed in the display area AA and extends to a portion of the first non-display area VA1 at the periphery of the display area AA, and the organic film layer 710 covers a surface of a side of the inner wall of the third groove 600 away from the flexible substrate 100. In this way, the organic film layer 710 protects the display area AA, prevents the display area AA from being invaded by water and oxygen, and improves the packaging effect.

[0148] The display panel further includes a first dam 720 and a second dam 730 . The organic film layer 710 is disposed on a side of the organic film layer 710 away from the flexible substrate 100 . The first dam 720 and the second dam 730 are sequentially disposed in a direction away from the display area AA. The display area AA is located on a side of the first dam 720 away from the second dam 730 .

[0149] The display panel further includes a metal layer 740 disposed inside the first bank 720 , and the metal layer 740 covers the organic film layer 710 in the display area AA.

[0150] The encapsulation layer 300 also covers the surface of the organic film layer 710, the first dam 720, the second dam 730 and the metal layer 740 away from the flexible substrate 100.

[0151] The encapsulation layer 300 covers the surface of the organic film layer 710, the first dam 720, the second dam 730 and the metal layer 740 on the side away from the flexible substrate 100. In this way, the encapsulation layer 300 forms a continuous protective layer on the side of the entire display panel away from the flexible substrate 100, and the encapsulation layer 300 protects the internal structure of the display panel and prevents the display panel from being damaged by external factors (such as water and oxygen).

[0152] In one embodiment, the third groove 600 is located between the first dam 720 and the second dam 730 .

[0153] Based on the same inventive concept, an embodiment of the present application further provides a display device, comprising the above-mentioned display panel.

[0154] The display device is provided with a first groove 400 in the first non-display area VA1. The first groove 400 completely penetrates the plurality of inorganic layers 200 and partially penetrates the flexible substrate 100. The first groove 400 can reduce stress generated during bending and prevent crack extension, thereby effectively improving the packaging effect.

[0155] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0156] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A display panel, comprising a display area and a first non-display area, wherein at least one side of the display area is provided with the first non-display area, characterized in that: The display panel comprises: A flexible substrate, arranged corresponding to the display area and the first non-display area; A plurality of inorganic layers are located on one side of the flexible substrate, the plurality of inorganic layers are stacked, and the inorganic layers extend from the display area to the first non-display area; at least one first groove, located in the first non-display area, wherein the at least one first groove completely penetrates the plurality of inorganic layers and partially penetrates the flexible substrate; and The encapsulation layer covers a side of the plurality of inorganic layers away from the flexible substrate, and the encapsulation layer also covers a surface of a side of the inner wall of the first groove away from the flexible substrate.

2. The display panel according to claim 1, characterized in that: The first non-display area is provided with at least two first grooves, and the at least two first grooves are spaced apart and distributed in a direction away from the display area; Preferably, along a cross section parallel to a first direction, a cross section of the first groove is in an inverted trapezoidal shape, wherein the first direction is perpendicular to an extension direction of the display area and parallel to a plane where the flexible substrate is located; Preferably, any plane parallel to the first direction intersects with at least one first groove in the first non-display area.

3. The display panel according to claim 2, characterized in that: The first groove extends along a second direction, the extension path of the first groove is a straight line or a curve, and the second direction intersects the first direction; Preferably, the extension length of the first groove is greater than or equal to the extension length of the display area; Preferably, the second direction is parallel to an extension direction of the display area.

4. The display panel according to claim 2, characterized in that: The first groove includes a plurality of first sub-grooves arranged along a second direction, and the second direction intersects the first direction; Preferably, the first sub-groove comprises a first groove portion and a second groove portion connected to each other, and a connection between the first groove portion and the second groove portion forms a first angle; Preferably, one end of the first groove portion is connected to one end of the second groove portion to form the first angle; the first groove portion extends along the first direction, or the first angle is set toward the first direction; Preferably, any plane parallel to the first direction intersects with at least one of the first sub-grooves in the first non-display area; Preferably, the first groove portion extends along the first direction, and the second groove portion extends along the second direction; Preferably, in two adjacent first grooves along the first direction, the first angles of the first sub-grooves are in opposite directions; Preferably, the second direction is parallel to an extension direction of the display area.

5. The display panel according to claim 2, characterized in that: The first non-display area is provided with a second groove, the second groove at least completely penetrates the top inorganic layer of the plurality of inorganic layers away from the flexible substrate, and the encapsulation layer covers the inner wall of the second groove on the side away from the flexible substrate; Preferably, along a cross section parallel to the first direction, at least one of the first grooves is respectively provided on both sides of the second groove; Preferably, along a cross section parallel to the first direction, a cross-sectional shape of the second groove is an inverted trapezoid.

6. The display panel according to claim 5, characterized in that: The plurality of inorganic layers include a first inorganic layer, a second inorganic layer, and a third inorganic layer which are sequentially stacked in a direction away from the flexible substrate, and the second groove completely penetrates the third inorganic layer.

7. The display panel according to any one of claims 1 to 6, characterized in that: The flexible substrate includes a first flexible substrate and a second flexible substrate. The second flexible substrate is arranged on a side of the first flexible substrate close to the inorganic layer. The first groove completely penetrates the second flexible substrate.

8. The display panel according to claim 1, characterized in that: The display panel further includes a third groove, wherein the third groove is disposed between at least one of the first grooves and the display area; the third groove includes a plurality of second sub-grooves arranged along a second direction; Preferably, the second sub-groove comprises a third groove portion and a fourth groove portion connected to each other, and a connection between the third groove portion and the fourth groove portion forms a second angle; Preferably, one end of the third groove portion is connected to one end of the fourth groove portion to form the second angle; the third groove portion extends along the first direction, or the second angle is set toward the first direction; Preferably, the first direction is perpendicular to the extension direction of the display area and parallel to the plane where the flexible substrate is located, and the second direction is parallel to the extension direction of the display area; Any plane parallel to the first direction intersects with at least one of the second sub-grooves; Preferably, the third groove portion extends along the first direction, and the fourth groove portion extends along the second direction; Preferably, in two adjacent third grooves along the first direction, the second included angles of the second sub-grooves are in opposite directions; Preferably, the third groove completely penetrates the third inorganic layer of the plurality of inorganic layers.

9. The display panel according to claim 8, characterized in that: The display panel further includes: an organic film layer, located on a side of the plurality of inorganic layers away from the flexible substrate, the organic film layer being arranged in the display area and extending to a portion of the first non-display area outside the display area, and the organic film layer covering a surface of a side of an inner wall of the third groove away from the flexible substrate; A first dam and a second dam are arranged on a side of the organic film layer away from the flexible substrate, the first dam and the second dam are arranged in sequence in a direction away from the display area, and the display area is located on a side of the first dam away from the second dam; a metal layer, disposed on the inner side of the first dam, the metal layer covering the organic film layer in the display area; The encapsulation layer also covers the organic film layer, the first dam, the second dam, and a surface of the metal layer away from the flexible substrate; Preferably, the material of the encapsulation layer includes an inorganic material; Preferably, the third groove is located between the first dam and the second dam.

10. A display device, characterized in that: Comprising a display panel as claimed in any one of claims 1 to 9.

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