Display panel and display device

Abstract

A display panel (100) and a display device (10). The display panel (100) comprises a display layer (101), a cover plate layer (102) and a first adhesive layer (103) therebetween; the cover plate layer (102) comprises a protective sub-layer (105); the protective sub-layer (105) is located on the side of the first adhesive layer (103) away from the display layer (101); the hardness of the surface of the side of the protective sub-layer (105) away from the first adhesive layer (103) is greater than or equal to 6H and less than or equal to 9H; and the contact angle of the surface of the cover plate layer (102) and / or the display layer (101) in contact with the first adhesive layer (103) is greater than or equal to 100 degrees.

Description

Display panel and display device TECHNICAL FIELD

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

[0002] With the development of display technology, people have higher requirements on the product quality and performance of display panels and display devices. The existing display panel, such as a foldable type display panel, may have surface scratches, falling and other damage problems during use, and often needs to separate the cover layer of the display panel from the display layer of the display panel for repair or replacement. The replaceable cover layer 110' of the existing display panel 100' uses a film layer with low hardness and modulus (as shown in the first polymer protective layer 111' and the second polymer protective layer 112' in FIG. 1) as the outermost replaceable layer, and the hard protective layer (as shown in 113' in FIG. 1) is directly bonded to the display layer 120' through the adhesive layer 130', which cannot be replaced. The user's experience is not good, and when the display panel is matched with a stylus, the stylus is easy to leave scratches on the outer surface of the cover layer, which reduces the product quality of the display panel.

[0003] Therefore, there is an urgent need for a display panel and a display device to solve the above technical problems. SUMMARY

[0004] The present application provides a display panel and a display device, which can alleviate the technical problem that the replaceable cover layer in the current display panel uses a film layer with low hardness and modulus as the outermost layer, resulting in poor user experience and easy scratches on the surface.

[0005] To solve the above problems, the technical scheme provided by the present application is as follows:

[0006] The present application provides a display panel, comprising:

[0007] a display layer;

[0008] a cover layer located on the light-emitting side of the display layer;

[0009] a first adhesive layer located between the display layer and the cover layer;

[0010] wherein the cover layer comprises a protective sublayer, the protective sublayer is located on the side of the first adhesive layer away from the display layer, the hardness of the surface of the protective sublayer away from the first adhesive layer is greater than or equal to 6H, and the hardness of the surface of the protective sublayer away from the first adhesive layer is less than or equal to 9H;

[0011] The water drop angle of the surface of the cover plate layer on the side in contact with the first adhesive layer is greater than or equal to 100 degrees, and / or the water drop angle of the surface of the display layer on the side in contact with the first adhesive layer is greater than or equal to 100 degrees.

[0012] The present application also provides a display device comprising a display panel, wherein the display panel comprises:

[0013] a display layer;

[0014] a cover plate layer on the light-emitting side of the display layer;

[0015] a first adhesive layer between the display layer and the cover plate layer;

[0016] The cover plate layer comprises a protective sub-layer on the side of the first adhesive layer away from the display layer, the hardness of the surface of the protective sub-layer on the side away from the first adhesive layer is greater than or equal to 6H, and the hardness of the surface of the protective sub-layer on the side away from the first adhesive layer is less than or equal to 9H.

[0017] The water drop angle of the surface of the cover plate layer on the side in contact with the first adhesive layer is greater than or equal to 100 degrees, and / or the water drop angle of the surface of the display layer on the side in contact with the first adhesive layer is greater than or equal to 100 degrees. BRIEF DESCRIPTION OF DRAWINGS

[0018] FIG. 1 is a schematic structural diagram of a display panel in the prior art;

[0019] FIG. 2 is a schematic structural diagram of a display panel according to an embodiment of the present application;

[0020] FIG. 3 is a schematic structural diagram of a cover plate layer of a display panel according to an embodiment of the present application;

[0021] FIG. 4 is a schematic structural diagram of a cover plate layer of a display panel according to an embodiment of the present application;

[0022] FIG. 5 is a schematic structural diagram of a cover plate layer of a display panel according to an embodiment of the present application;

[0023] FIG. 6 is a schematic structural diagram of a protective sub-layer of a display panel according to an embodiment of the present application;

[0024] FIG. 7 is a schematic structural diagram of a display device according to an embodiment of the present application. Embodiments of the present application

[0025] The application provides a display panel and a display device. In order to make the purpose, technical solutions and effects of the application more clear and explicit, the application is further described in detail below with reference to the drawings and examples. It should be understood that the specific examples described herein are only used to explain the application and not to limit the application.

[0026] Currently, the replaceable cover layer in the display panel uses a film layer with low hardness and modulus as the outermost layer, which has the technical problems of poor user experience and easy to leave scratches on the surface.

[0027] Referring to FIGS. 2-6, the application provides a display panel 100, comprising:

[0028] a display layer 101;

[0029] a cover layer 102 located on the light-emitting side of the display layer 101;

[0030] a first adhesive layer 103 located between the display layer 101 and the cover layer 102;

[0031] The cover layer 102 comprises a protective sub-layer 105, which is located on the side of the first adhesive layer 103 away from the display layer 101. The hardness of the surface of the protective sub-layer 105 away from the first adhesive layer 103 is greater than or equal to 6H, and the hardness of the surface of the protective sub-layer 105 away from the first adhesive layer 103 is less than or equal to 9H.

[0032] The water droplet angle of the surface of the cover layer 102 in contact with the first adhesive layer 103 is greater than or equal to 100 degrees, and / or the water droplet angle of the surface of the display layer 101 in contact with the first adhesive layer 103 is greater than or equal to 100 degrees.

[0033] In the application, the hardness of the surface of the protective sub-layer 105 away from the first adhesive layer 103 is greater than or equal to 6H and less than or equal to 9H. By providing the protective sub-layer 105, the hardness of the side of the cover layer 102 away from the display layer 101 (i.e., the side of the cover layer 102 that is contacted by the user) is improved, the user experience is improved, and the occurrence of surface scratches is reduced. At the same time, the protective sub-layer 105 is located on the side of the display layer 101 away from the first adhesive layer 103. When the protective sub-layer 105 is damaged, it can be separated from the display layer 101 and removed, facilitating the repair or replacement of the cover layer 102, and helping to maintain the product quality of the display panel 100 and prolong the service life of the display panel 100.

[0034] In the embodiment of the present application, the water drop angle of the surface of the cover plate layer 102 on the side in contact with the first adhesive layer 103 is greater than or equal to 100 degrees, so that the cover plate layer 102 and the first adhesive layer 103 are easy to separate; and / or the water drop angle of the surface of the display layer 101 on the side in contact with the first adhesive layer 103 is greater than or equal to 100 degrees, so that the first adhesive layer 103 and the display layer 101 are easy to separate. The above arrangement is helpful to reduce the difficulty of removing the cover plate layer 102, facilitate the repair or replacement of the cover plate layer 102, maintain the product quality of the display panel 100 and prolong the service life of the display panel 100.

[0035] In the embodiment of the present application, the cover plate layer 102 is provided with a protective sub-layer 105 with high hardness, and the water drop angle of the surface of the cover plate layer 102 and / or the display layer 101 in contact with the first adhesive layer 103 is greater than or equal to 100 degrees. While reducing the difficulty of removing the cover plate layer 102, the surface hardness of the side of the cover plate layer 102 away from the display layer 101 is enhanced, the user experience is improved, the occurrence of surface scratches is reduced, and the product quality of the display panel is improved.

[0036] The technical solutions of the present application will be described in combination with specific embodiments.

[0037] In some embodiments, the difference between the hydrophobicity of the surface of the display layer 101 on the side in contact with the first adhesive layer 103 and the hydrophobicity of the surface of the cover plate layer 102 on the side in contact with the first adhesive layer 103 is helpful to realize the separation between the display layer 101 and the first adhesive layer 103, or the separation between the cover plate layer 102 and the first adhesive layer 103, so as to easily realize the separation between the cover plate layer 102 and the display layer 101, reduce the difficulty of removing the cover plate layer 102, and prolong the service life of the display panel.

[0038] In some embodiments, when the hydrophobicity of the surface of the display layer 101 on the side in contact with the first adhesive layer 103 is stronger than the hydrophobicity of the surface of the cover plate layer 102 on the side in contact with the first adhesive layer 103, the water drop angle of the surface of the display layer 101 on the side in contact with the first adhesive layer 103 is greater than or equal to 100 degrees, for example, 105 degrees, 108 degrees, 110 degrees, 115 degrees, 118 degrees, 120 degrees, etc., so that the surface of the display layer 101 on the side in contact with the first adhesive layer 103 has sufficient hydrophobicity, which is helpful to the separation between the display layer 101 and the first adhesive layer 103. The water drop angle can be measured by using a water drop angle tester.

[0039] In some embodiments, when the water droplet angle of the surface of the display layer 101 in contact with the first adhesive layer 103 is greater than or equal to 100 degrees, the water droplet angle of the surface of the cover layer 102 in contact with the first adhesive layer 103 is greater than or equal to 20 degrees, and the water droplet angle of the surface of the cover layer 102 in contact with the first adhesive layer 103 is less than or equal to 50 degrees, so that the surface of the cover layer 102 in contact with the first adhesive layer 103 has sufficient hydrophilicity, the adhesive force between the cover layer 102 and the first adhesive layer 103 is sufficient, and when the cover layer 102 is separated from the display layer 101, the first adhesive layer 103 is removed together, and no first adhesive layer 103 remains on the light-emitting side of the display layer 101.

[0040] Referring to FIGS. 2-3 and 6, in some embodiments, when the water droplet angle of the surface of the display layer 101 in contact with the first adhesive layer 103 is greater than or equal to 100 degrees, the display layer 101 includes a first sub-layer 115, and the first sub-layer 115 is in contact with the first adhesive layer 103 on the side close to the first adhesive layer 103, that is, the water droplet angle of the surface of the first sub-layer 115 in contact with the first adhesive layer 103 is greater than or equal to 100 degrees.

[0041] In some embodiments, the first sub-layer 115 can be an anti-fingerprint coating layer having oil stain resistance, anti-fingerprint, water resistance, etc.

[0042] In some embodiments, the material of the first sub-layer 115 can be selected from at least one of a fluorine-containing inorganic material and a fluorine-containing organic material, for example, the material of the first sub-layer 115 can be selected from a fluorosilicon compound.

[0043] In some embodiments, when the hydrophobicity of the surface of the display layer 101 in contact with the first adhesive layer 103 is weaker than the hydrophobicity of the surface of the cover layer 102 in contact with the first adhesive layer 103, the water droplet angle of the surface of the cover layer 102 in contact with the first adhesive layer 103 is greater than or equal to 100 degrees, for example, 105 degrees, 108 degrees, 110 degrees, 115 degrees, 118 degrees, 120 degrees, etc., so that the surface of the cover layer 102 in contact with the first adhesive layer 103 has sufficient hydrophobicity, which is beneficial for the separation of the cover layer 102 and the first adhesive layer 103.

[0044] In some embodiments, when the water droplet angle of the surface of the side of the cover layer 102 in contact with the first adhesive layer 103 is greater than or equal to 100 degrees, the water droplet angle of the surface of the side of the display layer 101 in contact with the first adhesive layer 103 is greater than or equal to 20 degrees, and the water droplet angle of the surface of the side of the display layer 101 in contact with the first adhesive layer 103 is less than or equal to 50 degrees, the surface of the side of the display layer 101 in contact with the first adhesive layer 103 has sufficient hydrophilicity, the adhesive force between the display layer 101 and the first adhesive layer 103 is sufficient, and when the cover layer 102 is separated from the display layer 101, the first adhesive layer 103 can be completely retained and continue to adhere to the replaced cover layer 102.

[0045] In some embodiments, the hydrophobicity of the surface of the side of the display layer 101 in contact with the first adhesive layer 103 and the hydrophobicity of the surface of the side of the cover layer 102 in contact with the first adhesive layer 103 are both large, which is conducive to realizing the layer-by-layer separation between the cover layer 102 and the first adhesive layer 103, the first adhesive layer 103 and the display layer 101, and no first adhesive layer 103 is left on the light-emitting side of the display layer 101. At this time, the water droplet angle of the surface of the side of the cover layer 102 in contact with the first adhesive layer 103 is greater than or equal to 100 degrees, and the water droplet angle of the surface of the side of the display layer 101 in contact with the first adhesive layer 103 is greater than or equal to 100 degrees.

[0046] Please refer to FIG. 4, in some embodiments, when the water droplet angle of the surface of the side of the cover layer 102 in contact with the first adhesive layer 103 is greater than or equal to 100 degrees, the cover layer 102 further comprises a second sub-layer 121, the side of the second sub-layer 121 close to the first adhesive layer 103 is in contact with the first adhesive layer 103, that is, the water droplet angle of the surface of the side of the second sub-layer 121 in contact with the first adhesive layer 103 is greater than or equal to 100 degrees.

[0047] In some embodiments, the second sub-layer 121 can be an anti-fingerprint coating layer, which has the properties of oil resistance, anti-fingerprint, waterproof, etc.

[0048] In some embodiments, the material of the second sub-layer 121 can be selected from at least one of fluorine-containing inorganic materials and fluorine-containing organic materials, for example, the material of the first sub-layer 115 can be selected from fluorosilicon compounds.

[0049] Referring to FIGS. 2-5, in some embodiments, the cover layer 102 further comprises a substrate sub-layer 104, which is located between the protective sub-layer 105 and the first adhesive layer 103. When the cover layer 102 comprises the second sub-layer 121, the substrate sub-layer 104 is located between the second sub-layer 121 and the protective sub-layer 105. When the cover layer 102 does not have the second sub-layer 121, the substrate sub-layer 104 is located between the protective sub-layer 105 and the first adhesive layer 103, and the side of the substrate sub-layer 104 close to the first adhesive layer 103 is in contact with the first adhesive layer 103.

[0050] Referring to FIGS. 2-6, in some embodiments, the cover layer 102 further comprises a third sub-layer 106, and the protective sub-layer 105 is located between the third sub-layer 106 and the substrate sub-layer 104. The hardness of the surface of the third sub-layer 106 away from the substrate sub-layer 104 is less than or equal to the hardness of the surface of the protective sub-layer 105 away from the substrate sub-layer 104. Alternatively, the hardness of the surface of the third sub-layer 106 away from the substrate sub-layer 104 is greater than the hardness of the surface of the protective sub-layer 105 away from the substrate sub-layer 104. By providing the third sub-layer 106, the protective sub-layer 105 is protected while the hardness of the side of the cover layer 102 away from the display layer 101 (i.e., the side of the cover layer 102 that is contacted by the user) is improved by the protective sub-layer 105, reducing the risk of breakage of the protective sub-layer 105.

[0051] Referring to FIGS. 2-6, in some embodiments, the third sub-layer 106 is located at the outermost side of the cover layer 102 away from the display layer 101, i.e., the surface of the third sub-layer 106 away from the substrate sub-layer 104 is the outermost surface of the display panel 100 on the light-emitting side of the display layer 101. The provision of the third sub-layer 106 is conducive to protecting the protective sub-layer 105 and preventing the user from being injured by the fragments generated by the protective sub-layer 105 when the protective sub-layer 105 breaks, improving the use safety of the display panel 100.

[0052] In some embodiments, the hardness of the surface of the third sub-layer 106 away from the substrate sub-layer 104 is greater than the hardness of the surface of the third sub-layer 106 close to the substrate sub-layer 104. That is, the hardness of the surface of the third sub-layer 106 close to the substrate sub-layer 104 is lower, and the hardness of the surface of the third sub-layer 106 away from the substrate sub-layer 104 is higher, which further improves the user experience and reduces the occurrence of surface scratches, and when the protective sub-layer 105 is broken in use, prevents the fragments generated by the protective sub-layer 105 from hurting the user, thereby improving the safety of the display panel 100.

[0053] Referring to FIGS. 5-6, in some embodiments, the orthographic projection of the protective sub-layer 105 on the substrate sub-layer 104 is located within the orthographic projection of the third sub-layer 106 on the substrate sub-layer 104, which is beneficial to improve the protection effect of the protective sub-layer 105 and the safety of the display panel 100.

[0054] Referring to FIGS. 5-6, in some embodiments, the protective sub-layer 105 includes at least one side surface between the surface of the protective sub-layer 105 away from the substrate sub-layer 104 and the surface of the protective sub-layer 105 close to the substrate sub-layer 104. The third sub-layer 106 covers at least one side surface of the protective sub-layer 105, which improves the protection effect of the third sub-layer 106 on the protective sub-layer 105, and prevents the protective sub-layer 105 from being broken due to cutting when the cover layer 102 is formed by cutting, thereby improving the product yield of the display panel 100. Preferably, the third sub-layer 106 covers each side surface of the protective sub-layer 105.

[0055] In some embodiments, the hardness of the surface of the third sub-layer 106 away from the substrate sub-layer 104 is greater than the hardness of the surface of the substrate sub-layer 104 close to the third sub-layer 106, which is beneficial to improve the hardness of the surface of the cover layer 102 away from the display layer 101, improve the user experience and reduce the occurrence of surface scratches, and improve the product quality of the display panel 100.

[0056] In some embodiments, the hardness of the surface of the third sub-layer 106 away from the substrate sub-layer 104 is greater than or equal to 3H, and the hardness of the surface of the third sub-layer 106 away from the substrate sub-layer 104 is less than or equal to 9H, for example, it can be 4H, 5H, 6H, 7H, 8H, etc.

[0057] In some embodiments, the third sub-layer 106 can be a hard coating layer. The material of the third sub-layer 106 can be a composite material of organic and inorganic phases interpenetrated or hybridized. The material of the third sub-layer 106 can be selected from inorganic-organic materials containing silicon, for example, the material of the third sub-layer 106 can be selected from at least one of a composite material having silicon oxide and / or silicon nitride, a polymer of siloxane and acrylate, a silsesquioxane polymer, an aliphatic or aromatic polymer containing inorganic silicon groups. When the third sub-layer 106 is selected from a composite material of organic and inorganic phases interpenetrated or hybridized, the surface of the third sub-layer 106 away from the substrate sub-layer 104 has a higher surface hardness while also having better recovery performance. For example, when the material of the third sub-layer 106 is selected from a polymer containing siloxane, due to the good recovery performance of such materials, when a stylus or other relatively hard object is used to slide on the surface of the third sub-layer 106 away from the display layer 101 with a large force, a fine trace can be left on the surface, and when the stylus or other relatively hard object leaves the surface, the fine trace will automatically recover and disappear.

[0058] In some embodiments, the protective sub-layer 105 can include ultra-thin glass (UTG) or other organic materials having a certain hardness and capable of supporting to enhance the surface hardness of the cover layer 102 away from the display layer 101 while meeting the bending performance requirements of the display panel 100.

[0059] In some embodiments, the hardness of the surface of the protective sub-layer 105 away from the substrate sub-layer 104 is greater than or equal to 6H, and the hardness of the surface of the protective sub-layer 105 away from the substrate sub-layer 104 is less than or equal to 9H, for example, it can be 6.2H, 6.3H, 6.4H, 6.5H, 6.6H, 6.7H, 6.8H, 6.9H, 7H, 7.2H, 7.3H, 7.4H, 7.5H, 7.6H, 7.7H, 7.8H, 7.9H, 8.2H, 8.3H, 8.4H, 8.5H, 8.6H, 8.7H, 8.8H, 8.9H, etc.

[0060] Please refer to FIGS. 2 to 5, in some embodiments, the cover layer 102 further includes a second adhesive layer 107 between the substrate sub-layer 104 and the protective sub-layer 105. The second adhesive layer 107 adheres and fixes the protective sub-layer 105 and the substrate sub-layer 104. When the third sub-layer 106 covers at least one side of the protective sub-layer 105, the surface portion of the third sub-layer 106 close to the substrate sub-layer 104 is in contact with the second adhesive layer 107.

[0061] In some embodiments, the material of the first adhesive layer 103 and the second adhesive layer 107 can be selected from optical glue with higher light transmittance.

[0062] Referring to FIGS. 2-3, in some embodiments, the surface of the protective sub-layer 105 away from the substrate sub-layer 104 is parallel to the plane of the substrate sub-layer 104, i.e., the surface of the protective sub-layer 105 away from the substrate sub-layer 104 is a flat surface. The surface of the protective sub-layer 105 close to the substrate sub-layer 104 is parallel to the plane of the substrate sub-layer 104, i.e., the surface of the protective sub-layer 105 close to the substrate sub-layer 104 is a flat surface. The distance between the surface of the protective sub-layer 105 close to the substrate sub-layer 104 and the surface of the protective sub-layer 105 away from the substrate sub-layer 104 is the thickness of the protective sub-layer 105, which is greater than or equal to 25 microns, and less than or equal to 50 microns, for example, 30 microns, 32 microns, 35 microns, 37 microns, 40 microns, 42 microns, 45 microns, 47 microns, etc.

[0063] Referring to FIGS. 2-3, in some embodiments, when the surface of the protective sub-layer 105 away from the substrate sub-layer 104 is parallel to the plane of the substrate sub-layer 104, the third sub-layer 106 includes a first portion 113, and the orthographic projection of the first portion 113 on the substrate sub-layer 104 is within the orthographic projection of the protective sub-layer 105 on the substrate sub-layer 104. The surface of the first portion 113 close to the substrate sub-layer 104 is parallel to the plane of the substrate sub-layer 104, and the surface of the first portion 113 away from the substrate sub-layer 104 is parallel to the plane of the substrate sub-layer 104. The distance between the surface of the first portion 113 close to the substrate sub-layer 104 and the surface of the first portion 113 away from the substrate sub-layer 104 is the thickness of the first portion 113. The thickness of the first portion 113 is less than the thickness of the protective sub-layer 105, so as to improve the hardness of the surface of the cover layer 102 away from the substrate sub-layer 104, improve the user experience, reduce the occurrence of surface scratches, and improve the product quality of the display panel 100.

[0064] In some embodiments, when the surface of the first portion 113 close to the side of the substrate sub-layer 104 is parallel to the plane where the substrate sub-layer 104 is located, and the surface of the first portion 113 away from the side of the substrate sub-layer 104 is parallel to the plane where the substrate sub-layer 104 is located, the ratio of the thickness of the first portion 113 to the thickness of the protective sub-layer 105 is greater than or equal to 0.4, and the ratio of the thickness of the first portion 113 to the thickness of the protective sub-layer 105 is less than or equal to 0.8, for example, it can be 0.5, 0.55, 0.56, 0.58, 0.6, 0.65, 0.66, 0.67, 0.7, 0.72, 0.75, 0.78, etc., so as to adjust the surface hardness of the cover plate layer 102 away from the display layer 101, the performance of the third sub-layer 106 to the protective sub-layer 105, etc.

[0065] In some embodiments, the thickness of the first portion 113 is greater than or equal to 16 microns, and the thickness of the first portion 113 is less than or equal to 24 microns, for example, it can be 17 microns, 18 microns, 19 microns, 20 microns, 21 microns, 22 microns, 23 microns, etc.

[0066] Please refer to FIGS. 5-6, in some embodiments, when the third sub-layer 106 covers at least one side of the protective sub-layer 105, the third sub-layer 106 further comprises a second portion 114, the orthographic projection of the second portion 114 on the substrate sub-layer 104 is located outside the orthographic projection of the protective sub-layer 105 on the substrate sub-layer 104, and the second portion 114 covers at least one side of the protective sub-layer 105. The thickness of the second portion 114 is equal to the sum of the thickness of the first sub-portion and the protective sub-layer 105, so that the surface of the third sub-layer 106 away from the substrate sub-layer 104 is parallel to the plane where the substrate sub-layer 104 is located. The thickness of the second portion 114 is greater than or equal to 41 microns, and the thickness of the second portion 114 is less than or equal to 74 microns, for example, it can be 42 microns, 45 microns, 46 microns, 48 microns, 50 microns, 52 microns, 55 microns, 58 microns, 60 microns, 62 microns, 65 microns, 68 microns, 70 microns, 72 microns, etc.

[0067] Please refer to FIGS. 5-6, in some embodiments, the display panel 100 further comprises a bending sub-area 108 located in the display area, and the protective sub-layer 105 comprises at least one groove 110, the groove 110 is located on the side of the protective sub-layer 105 away from the substrate sub-layer 104, and the groove 110 is located in the bending sub-area 108. The setting of the groove 110 is beneficial to improve the bending performance of the cover plate layer 102.

[0068] In some embodiments, the groove 110 is located on a side of the protective sub-layer 105 away from the substrate sub-layer 104, and the depth of the groove 110 is less than the thickness of the protective sub-layer 105. That is, there is still a certain thickness of the protective sub-layer 105 between the side of the groove 110 close to the substrate sub-layer 104 and the side of the protective sub-layer 105 close to the substrate sub-layer 104, so as to maintain the supporting performance of the protective sub-layer 105 while improving the bending performance of the cover layer 102.

[0069] Referring to FIG. 5, in some embodiments, the groove 110 is arranged in one-to-one correspondence with the bending sub-area 108 of the display panel 100. That is, one groove 110 is located in one bending sub-area 108.

[0070] In some embodiments, the groove 110 includes a groove 110 side wall connected to the side of the groove 110 close to the substrate sub-layer 104 and the side of the groove 110 away from the substrate sub-layer 104, and the extension direction of the orthographic projection of the side wall on the substrate sub-layer 104 is parallel to the extension direction of the bending sub-area 108.

[0071] Referring to FIG. 6, in some embodiments, the protective sub-layer 105 further includes a first thickness part 111 and a second thickness part 112, the first thickness part 111 is located in the orthographic projection of the groove 110 on the substrate sub-layer 104, and the second thickness part 112 is located outside the orthographic projection of the groove 110 on the substrate sub-layer 104.

[0072] Referring to FIG. 5, in some embodiments, the display panel 100 further includes a non-bending sub-area 109 connected with the bending sub-area 108, the first thickness part 111 is located in the bending sub-area 108, and the second thickness part 112 is at least partially located in the non-bending sub-area 109. The thickness of the second thickness part 112 is greater than the minimum thickness of the first thickness part 111, which is conducive to improving the surface hardness of the side of the cover layer 102 away from the display layer 101 in the non-bending sub-area 109 while ensuring the bending performance of the display panel 100, improving the user experience, reducing the occurrence of surface scratches, and improving the product quality of the display panel 100.

[0073] In some embodiments, the minimum thickness of the first thickness part 111 is greater than or equal to 30 microns, and the minimum thickness of the first thickness part 111 is less than or equal to 50 microns, for example, it can be 32 microns, 35 microns, 36 microns, 40 microns, 42 microns, 45 microns, 46 microns, 48 microns, etc.

[0074] In some embodiments, the second thickness portion 112 has a thickness greater than or equal to 70 microns and less than or equal to 120 microns, for example, 75 microns, 80 microns, 85 microns, 90 microns, 95 microns, 100 microns, 105 microns, 110 microns, 115 microns, etc.

[0075] Referring to FIG. 6, in some embodiments, when the protective sub-layer 105 includes the first thickness portion 111 and the second thickness portion 112, the first portion 113 of the third sub-layer 106 includes a flat sub-portion 113a and a filling sub-portion 113b, the flat sub-portion 113a covers a side of the second thickness portion 112 away from the substrate sub-layer 104, and the filling sub-portion 113b covers a side of the first thickness portion 111 away from the substrate sub-layer 104.

[0076] In some embodiments, the flat sub-portion 113a has a thickness greater than or equal to 16 microns and less than or equal to 24 microns, for example, 17 microns, 18 microns, 19 microns, 20 microns, 21 microns, 22 microns, 23 microns, etc.

[0077] In some embodiments, the filling sub-portion 113b has a thickness greater than or equal to 36 microns and less than or equal to 120 microns, for example, 40 microns, 45 microns, 50 microns, 55 microns, 60 microns, 65 microns, 70 microns, 75 microns, 80 microns, 85 microns, 90 microns, 95 microns, 100 microns, 105 microns, 110 microns, etc.

[0078] In some embodiments, when the display panel 100 includes the folding sub-region 108, the display panel 100 has a folding state and a flat state, and the display panel 100 can be a foldable display panel 100. The sum of the thicknesses of the first thickness portion 111 and the filling sub-portion 113b is equal to the sum of the thicknesses of the second thickness portion 112 and the flat sub-portion 113a. That is, when the display panel 100 is in the flat state, the surface of the third sub-layer 106 away from the substrate sub-layer 104 is parallel to the plane in which the substrate sub-layer 104 is located, and the surface of the protective sub-layer 105 away from the substrate sub-layer 104 is parallel to the plane in which the substrate sub-layer 104 is located. Preferably, the sum of the thicknesses of the first thickness portion 111 and the filling sub-portion 113b is greater than or equal to 72 microns and less than or equal to 110 microns, for example, 75 microns, 80 microns, 85 microns, 90 microns, 92 microns, 95 microns, 96 microns, 100 microns, 105 microns, etc.

[0079] In some embodiments, the material of the substrate sub-layer 104 can be selected from at least one of polyethylene terephthalate, polyimide, thermoplastic polyurethane, and other polymers with higher light transmittance and other optical properties.

[0080] In some embodiments, the thickness of the substrate sub-layer 104 is greater than or equal to 20 microns, the thickness of the substrate sub-layer 104 is less than or equal to 50 microns, for example, can be 22 microns, 25 microns, 28 microns, 30 microns, 32 microns, 35 microns, 38 microns, 40 microns, 42 microns, 45 microns, 48 microns, etc.

[0081] Please refer to Table 1, which is the performance data results of the impact resistance and wear resistance of the display panel provided by the embodiments of the present application.

[0082] Table 1: Impact resistance and wear resistance data of display panel

[0083]

[0084] Example 1 and Comparative Example 1 are comparative experimental groups, and the test conditions are the same. The display panel in Example 1 uses the display panel provided by the embodiments of the present application, and the display panel in Comparative Example 1 uses the display panel in the prior art. The difference between the two is that the cover layer in Example 1 is composed of a substrate sub-layer, a second adhesive layer, a protective sub-layer and a third sub-layer, and the cover layer in Comparative Example 1 is composed of a hard protective layer and two polymer layers of a first polymer protective layer and a second polymer protective layer on the side of the hard protective layer away from the display layer, and the hard protective layer cannot be separated from the display layer. The protective sub-layer of the cover layer in Example 1 has the same structure as the hard protective layer in Comparative Example 1, and in the flat state of the display panel, the surface of the cover layer in Example 1 away from the display layer is parallel to the display surface of the display panel, and the surface of the cover layer in Comparative Example 1 away from the display layer is parallel to the display surface of the display panel.

[0085] From the data in Table 1, it can be seen that the display panel provided by the embodiments of the present application is comparable to the display panel provided by the prior art in terms of the results of the pen drop test and the ball drop test, and the outermost surface of the stylus cover layer is repeatedly slid 2000 times without scratches, having better impact resistance and excellent wear resistance.

[0086] In some embodiments, the display layer 101 includes a plurality of functional film layers for display in the display panel 100.

[0087] Referring to FIG. 2, in some embodiments, the display layer 101 further comprises a polarizing layer 116 and a panel body layer 117, the polarizing layer 116 is located on the side of the panel body layer 117 close to the cover layer 102. The first sub-layer 115 can be formed on the surface of the polarizing layer 116 close to the first adhesive layer 103, i.e., the first sub-layer 115 is located on the side of the polarizing layer 116 close to the first adhesive layer 103, and the first sub-layer 115 is in contact with the polarizing layer 116.

[0088] In some embodiments, the panel body layer 117 further comprises a substrate away from the cover layer 102. The substrate can be a hard substrate, such as a glass substrate, or the substrate can be a flexible substrate, such as a substrate formed of polyimide. When the substrate is a flexible substrate, the substrate can be formed of multiple sub-substrates of the same material, such as polyimide, and adjacent sub-substrates are bonded by an adhesive sub-layer.

[0089] In some embodiments, the panel body layer 117 further comprises a thin film transistor layer between the substrate and the first sub-layer 115. The thin film transistor layer comprises a thin film transistor comprising a semiconductor on the substrate, which can be formed of polycrystalline silicon or metal oxide (such as indium gallium zinc oxide). The semiconductor is divided into a channel region and source and drain regions formed on both sides of the channel region. The thin film transistor layer further comprises a first gate insulating layer covering the semiconductor. The thin film transistor further comprises a first gate formed on the first gate insulating layer, which overlaps the channel region. The first gate can be formed of multiple layers or a single layer comprising a low-resistance material such as Al, Ti, Mo, Cu, Ni, or an alloy thereof, or a material with high corrosion resistance. The thin film transistor layer further comprises a second gate insulating layer covering the first gate. The thin film transistor further comprises a second gate on the second gate insulating layer, which overlaps the first gate, and the second gate can be formed of multiple layers or a single layer comprising a low-resistance material such as Al, Ti, Mo, Cu, Ni, or an alloy thereof, or a material with high corrosion resistance. The thin film transistor layer further comprises a first interlayer insulating layer formed on the second gate. The first interlayer insulating layer and the first gate insulating layer and the second gate insulating layer comprise source and drain contact holes, and the source and drain regions are exposed through the source and drain contact holes, respectively.

[0090] The thin film transistor further comprises a source electrode and a drain electrode arranged in the same layer and formed on the first interlayer insulating layer, the source electrode is connected with the source region through a source contact hole, and the drain electrode is connected with the drain region through a drain contact hole. The source electrode and the drain electrode can be a plurality of layers or a single layer formed by a low-resistance material such as Al, Ti, Mo, Cu, Ni, or an alloy thereof, or a material with high corrosion resistance. For example, the source electrode and the drain electrode can be a triple layer of Ti / Cu / Ti, Ti / Ag / Ti, Ti / Al / Ti, or Mo / Al / Mo, or other single layer or multi-layer structures.

[0091] In some embodiments, the panel body layer 117 further comprises a planar layer between the thin film transistor layer and the light-emitting layer, the planar layer covers the source electrode and the drain electrode.

[0092] In some embodiments, the panel body layer 117 further comprises an anode layer between the planar layer and the first sub-layer 115, the anode layer comprises a plurality of anodes arranged one-to-one with the pixel units. Each of the anodes is electrically connected with the thin film transistor. The planar layer comprises anode contact holes through which the anodes contact the source electrode or the drain electrode of the thin film transistor.

[0093] In some embodiments, the panel body layer 117 further comprises a pixel definition layer on the same side of the substrate as the pixel units, the pixel definition layer comprises pixel definition portions and openings between the pixel definition portions. The panel body layer 117 further comprises a light-emitting layer comprising a plurality of pixel units. The pixel units are located in the openings. The openings expose part of the anodes and cover the edges of the anodes. The pixel units can comprise red pixel units, green pixel units, and blue pixel units.

[0094] In some embodiments, the cathode layer covers the light-emitting layer. In the direction from the anode to the cathode layer, the light-emitting layer comprises a hole-conducting organic layer, a light-emitting material layer, and an electron-conducting organic layer arranged in sequence. The hole-conducting organic layer can comprise a hole injection layer and a hole transport layer, the hole injection layer is in direct contact with the anode, and the hole transport layer is between the hole injection layer and the light-emitting material layer. The hole-conducting organic layer can further comprise an electron blocking layer between the hole transport layer and the light-emitting material layer. The electron-conducting organic layer can comprise an electron injection layer and an electron transport layer, the electron injection layer is in direct contact with the cathode layer, and the electron transport layer is between the electron injection layer and the light-emitting material layer. The electron-conducting organic layer can further comprise a hole blocking layer between the electron transport layer and the light-emitting layer.

[0095] In some embodiments, the panel body layer 117 further comprises an encapsulation layer located on the side of the cathode layer close to the cover layer 102. The encapsulation layer is formed by a plurality of inorganic film layers and organic film layers stacked alternately, for example, in the direction from the display layer 101 to the cover layer 102, the encapsulation layer comprises a first inorganic encapsulation sub-layer, a first organic encapsulation sub-layer, and a second inorganic encapsulation sub-layer.

[0096] In some embodiments, the panel body layer 117 further comprises a touch layer located on the side of the encapsulation layer away from the light-emitting layer. The touch layer can realize the touch function in a self-capacitive touch mode or a mutual-capacitive touch mode. When the touch layer realizes the touch function in the self-capacitive touch mode, the touch layer can have only one touch metal layer.

[0097] When the touch layer realizes the touch function in the mutual-capacitive touch mode, the touch layer comprises a first touch metal layer, a touch insulating layer, and a second touch metal layer, wherein the touch insulating layer is located on the side of the first touch metal layer away from the encapsulation layer, and the second touch metal layer is located on the side of the touch insulating layer away from the encapsulation layer. The first touch metal layer can be directly disposed on the encapsulation layer, or a spacing layer can be further disposed between the first touch layer and the encapsulation layer, and the spacing layer can comprise an inorganic spacing layer and / or an organic spacing layer. The first touch metal layer comprises a first touch electrode, a second touch electrode, and a first bridge line, the second touch metal layer comprises a second bridge line, and the first touch electrode and the second touch electrode are both metal networks; or the second touch metal layer comprises a first touch electrode, a second touch electrode, and a first bridge line, and the first touch metal layer comprises a second bridge line.

[0098] Please refer to FIG. 2. In some embodiments, the display panel 100 further comprises a back plate layer 118 located on the side of the substrate away from the cover layer 102, a light shielding layer 119 located on the side of the back plate layer 118 away from the substrate, and a support layer 120 located on the side of the light shielding layer 119 away from the substrate. The back plate layer 118 can be made of a material easy to bend, such as polyimide, so as to facilitate the bending performance of the display panel 100; or the back plate layer 118 can be made of the same material as the support layer 120. The material of the light shielding layer 119 can be selected from black materials easy to bend, such as black polyimide. The material of the support layer 120 can be selected from metal materials with good heat dissipation performance, for example, the support layer 120 can be selected from materials such as stainless steel. The support layer 120 and the back plate layer 118 can both play a certain fixing and supporting role.

[0099] The display panel 100 provided by the embodiment of the present application is provided with the protective sub-layer 105 with greater hardness on the side of the base material sub-layer 104 of the cover layer 102 away from the first adhesive layer 103, which reduces the difficulty of removing the cover layer 102, enhances the surface hardness of the side of the cover layer 102 away from the display layer 101, improves the user experience, reduces the occurrence of surface scratches, and improves the product quality of the display panel 100.

[0100] Referring to FIG. 7, the embodiment of the present application further provides a display device 10 comprising the display panel 100 as any of the above.

[0101] The specific structure of the display panel 100 can refer to the embodiment of any of the above display panels and the accompanying drawings, which will not be described here.

[0102] In some embodiments, the display device 10 further comprises a device body 200 which is combined with the display panel 100 as a whole.

[0103] In some embodiments, the device body 200 can comprise a middle frame, a frame glue, etc., and the display device 10 can be a mobile phone, a tablet, a television, etc., which is not limited here.

[0104] The embodiment of the present application discloses a display panel and a display device; the display panel comprises a display layer, a cover layer and a first adhesive layer, the first adhesive layer is located between the display layer and the cover layer, the cover layer comprises a protective sub-layer, the protective sub-layer is located on the side of the first adhesive layer away from the display layer, the hardness of the surface of the side of the protective sub-layer away from the first adhesive layer is greater than or equal to 6H and less than or equal to 9H, and the water drop angle of the surface of the cover layer and / or the display layer in contact with the first adhesive layer is greater than or equal to 100 degrees; the present application sets the protective sub-layer with greater hardness on the cover layer, and the water drop angle of the surface of the cover layer and / or the display layer in contact with the first adhesive layer is greater than or equal to 100 degrees, which reduces the difficulty of removing the cover layer, enhances the surface hardness of the side of the cover layer away from the display layer, improves the user experience, reduces the occurrence of surface scratches, and improves the product quality of the display panel.

[0105] It can be understood that, for those skilled in the art, equivalent replacements or changes can be made according to the technical solutions and the inventive concept of the present application, and all these changes or replacements shall fall within the protection scope of the claims attached to the present application.

Claims

1. A display panel, wherein: include: Display layer; a cover layer, located on the light-emitting side of the display layer; a first adhesive layer, located between the display layer and the cover layer; The cover layer includes a protective sublayer, the protective sublayer is located on a side of the first adhesive layer away from the display layer, the hardness of the surface of the protective sublayer away from the first adhesive layer is greater than or equal to 6H, and the hardness of the surface of the protective sublayer away from the first adhesive layer is less than or equal to 9H; The water drop angle of the surface of the cover layer on the side in contact with the first adhesive layer is greater than or equal to 100 degrees, and / or the water drop angle of the surface of the display layer on the side in contact with the first adhesive layer is greater than or equal to 100 degrees.

2. The display panel according to claim 1, wherein The water drop angle of the surface of the display layer on the side in contact with the first adhesive layer is greater than or equal to 100 degrees, the water drop angle of the surface of the cover layer on the side in contact with the first adhesive layer is greater than or equal to 20 degrees, and the water drop angle of the surface of the cover layer on the side in contact with the first adhesive layer is less than or equal to 50 degrees.

3. The display panel according to claim 2, wherein: The display layer includes a first sublayer, a side of the first sublayer close to the first adhesive layer is in contact with the first adhesive layer, and a material of the first sublayer includes a fluorine-containing inorganic material.

4. The display panel according to claim 1, wherein: The water drop angle of the surface of the cover layer on the side in contact with the first adhesive layer is greater than or equal to 100 degrees. The cover layer also includes a second sublayer, and the second sublayer is in contact with the first adhesive layer on the side close to the first adhesive layer. The material of the second sublayer includes a fluorine-containing inorganic material.

5. The display panel according to claim 1, wherein: The cover layer further includes a substrate sublayer, wherein the substrate sublayer is located between the protective sublayer and the first adhesive layer; The hardness of the surface of the substrate sublayer away from the first adhesive layer is smaller than the hardness of the surface of the protective sublayer away from the first adhesive layer. The display panel according to claim 5 , wherein: The cover layer further includes a third sublayer, and the protective sublayer is located between the third sublayer and the substrate sublayer; The hardness of the surface of the third sub-layer away from the substrate sub-layer is less than or equal to the hardness of the surface of the protective sub-layer away from the substrate sub-layer.

7. The display panel according to claim 6, wherein: The hardness of the surface of the third sub-layer away from the substrate sub-layer is greater than the hardness of the surface of the third sub-layer close to the substrate sub-layer.

8. The display panel according to claim 6, wherein: The orthographic projection of the protection sub-layer on the substrate sub-layer is located within the orthographic projection of the third sub-layer on the substrate sub-layer.

9. The display panel according to claim 6, wherein: The surface of the protective sublayer away from the substrate sublayer is parallel to the plane where the substrate sublayer is located, the surface of the protective sublayer close to the substrate sublayer is parallel to the plane where the substrate sublayer is located, the thickness of the protective sublayer is greater than or equal to 25 microns, and the thickness of the protective sublayer is less than or equal to 50 microns.

10. The display panel according to claim 6, wherein: The protective sublayer includes at least one side surface between a surface of the protective sublayer away from the substrate sublayer and a surface of the protective sublayer close to the substrate sublayer, and the third sublayer covers at least one side surface of the protective sublayer.

11. The display panel according to claim 6, wherein: The display panel further includes a bending sub-region located in the display region. The protection sub-layer includes at least one groove located on a side of the protection sub-layer away from the substrate sub-layer. The groove is located in the bending sub-region.

12. The display panel according to claim 11, wherein: The protective sublayer further includes a first thickness portion and a second thickness portion, wherein the first thickness portion is located within the orthographic projection of the groove on the substrate sublayer, and the second thickness portion is located outside the orthographic projection of the groove on the substrate sublayer; wherein the minimum thickness of the first thickness portion is greater than or equal to 30 microns, and the minimum thickness of the first thickness portion is less than or equal to 50 microns; The thickness of the second thickness portion is greater than or equal to 70 micrometers, and the thickness of the second thickness portion is less than or equal to 120 micrometers.

13. A display device, wherein: A display panel is included, wherein the display panel includes: Display layer; a cover layer, located on the light-emitting side of the display layer; a first adhesive layer, located between the display layer and the cover layer; The cover layer includes a protective sublayer, the protective sublayer is located on a side of the first adhesive layer away from the display layer, the hardness of the surface of the protective sublayer away from the first adhesive layer is greater than or equal to 6H, and the hardness of the surface of the protective sublayer away from the first adhesive layer is less than or equal to 9H; The water drop angle of the surface of the cover layer on the side in contact with the first adhesive layer is greater than or equal to 100 degrees, and / or the water drop angle of the surface of the display layer on the side in contact with the first adhesive layer is greater than or equal to 100 degrees.

14. The display device according to claim 13, wherein: The water drop angle of the surface of the display layer on the side in contact with the first adhesive layer is greater than or equal to 100 degrees, the water drop angle of the surface of the cover layer on the side in contact with the first adhesive layer is greater than or equal to 20 degrees, and the water drop angle of the surface of the cover layer on the side in contact with the first adhesive layer is less than or equal to 50 degrees.

15. The display device according to claim 14, wherein The display layer includes a first sublayer, a side of the first sublayer close to the first adhesive layer is in contact with the first adhesive layer, and a material of the first sublayer includes a fluorine-containing inorganic material.

16. The display device according to claim 13, wherein The water drop angle of the surface of the cover layer on the side in contact with the first adhesive layer is greater than or equal to 100 degrees. The cover layer also includes a second sublayer, and the second sublayer is in contact with the first adhesive layer on the side close to the first adhesive layer. The material of the second sublayer includes a fluorine-containing inorganic material.

17. The display device according to claim 13, wherein: The cover layer further includes a substrate sublayer, wherein the substrate sublayer is located between the protective sublayer and the first adhesive layer; The hardness of the surface of the substrate sublayer away from the first adhesive layer is smaller than the hardness of the surface of the protective sublayer away from the first adhesive layer.

18. The display device according to claim 17, wherein: The cover layer further includes a third sublayer, and the protective sublayer is located between the third sublayer and the substrate sublayer; The hardness of the surface of the third sub-layer away from the substrate sub-layer is less than or equal to the hardness of the surface of the protective sub-layer away from the substrate sub-layer.

19. The display device according to claim 18, wherein The hardness of the surface of the third sub-layer away from the substrate sub-layer is greater than the hardness of the surface of the third sub-layer close to the substrate sub-layer.

20. The display device according to claim 18, wherein The orthographic projection of the protection sub-layer on the substrate sub-layer is located within the orthographic projection of the third sub-layer on the substrate sub-layer.

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