Display panel and display device

Abstract

Embodiments of the present application disclose a display panel and a display device; the display panel comprises a display layer, a cover plate layer and a first adhesive layer, the first adhesive layer is located between the display layer and the cover plate layer, the cover plate layer comprises a protection sublayer, the protection sublayer 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 protection sublayer away from the first adhesive layer is greater than or equal to 6H and less than or equal to 9H, the water drop angle of the surface of the cover plate layer and / or the display layer in contact with the first adhesive layer is greater than or equal to 100 degrees; by arranging the protection sublayer with large hardness on the cover plate layer and making the water drop angle of the surface of the cover plate layer and / or the display layer in contact with the first adhesive layer greater than or equal to 100 degrees, the removal difficulty of the cover plate layer is reduced, at the same time, the surface hardness of the side of the cover plate layer away from the display layer is enhanced, the user experience is improved, the appearance of surface scratches is reduced, and the product quality of the display panel is improved.

Description

Technical Field

[0001] This invention relates to the field of displays, and more specifically to a display panel and a display device. Background Technology

[0002] With the development of display technology, people have placed higher demands on the product quality and performance of display panels and display devices. Existing display panels, such as foldable display panels, are prone to surface scratches and damage from drops during use, often requiring the separation of the cover layer from the display layer for repair or replacement. The replaceable cover layer 110' of existing display panels 100' uses a film layer with low hardness and modulus (such as... Figure 1 The first polymer protective layer 111' and the second polymer protective layer 112' are shown as the outermost replaceable layer, and the hard protective layer (such as...) Figure 1 As shown in 113', the cover plate is directly bonded to the display layer 120' via the adhesive layer 130' and cannot be replaced. This results in a poor user experience. When the display panel is used with a stylus, the stylus is prone to leaving scratches on the outer surface of the cover plate, which reduces the product quality of the display panel.

[0003] Therefore, there is an urgent need for a display panel and display device to solve the above-mentioned technical problems. Summary of the Invention

[0004] The present invention provides a display panel and display device, which can alleviate the technical problem that the replacement 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] This invention provides a display panel, comprising:

[0006] Display layer;

[0007] The cover plate layer is located on the light-emitting side of the display layer;

[0008] A first adhesive layer is located between the display layer and the cover plate layer;

[0009] The cover layer includes a protective sub-layer, which is located on the side of the first adhesive layer away from the display layer. The surface of the protective sub-layer away from the first adhesive layer has a hardness greater than or equal to 6H, and the surface of the protective sub-layer away from the first adhesive layer has a hardness less than or equal to 9H.

[0010] The water droplet angle on the surface of the cover plate layer that contacts the first adhesive layer is greater than or equal to 100 degrees, and / or the water droplet angle on the surface of the display layer that contacts the first adhesive layer is greater than or equal to 100 degrees.

[0011] In some embodiments, the water droplet angle on the surface of the display layer that contacts the first adhesive layer is greater than or equal to 100 degrees, the water droplet angle on the surface of the cover layer that contacts the first adhesive layer is greater than or equal to 20 degrees, and the water droplet angle on the surface of the cover layer that contacts the first adhesive layer is less than or equal to 50 degrees.

[0012] In some embodiments, the display layer includes a first sublayer that contacts the first adhesive layer on the side closest to it, and the material of the first sublayer includes a fluorine-containing inorganic material.

[0013] In some embodiments, the water droplet angle on the surface of the cover layer that contacts the first adhesive layer is greater than or equal to 100 degrees, and the cover layer further includes a second sub-layer that contacts the first adhesive layer on the side closest to the first adhesive layer, and the material of the second sub-layer includes a fluorine-containing inorganic material.

[0014] In some embodiments, the cover layer further includes a substrate sublayer located between the protective sublayer and the first adhesive layer;

[0015] Wherein, the hardness of the surface of the substrate sublayer away from the first adhesive layer is less than the hardness of the surface of the protective sublayer away from the first adhesive layer.

[0016] In some embodiments, the cover layer further includes a third sub-layer, the protective sub-layer being located between the third sub-layer and the substrate sub-layer;

[0017] Wherein, the hardness of the surface of the third sublayer away from the substrate sublayer is less than or equal to the hardness of the surface of the protective sublayer away from the substrate sublayer.

[0018] In some embodiments, the hardness of the surface of the third sublayer away from the substrate sublayer is greater than the hardness of the surface of the third sublayer close to the substrate sublayer.

[0019] In some embodiments, the orthographic projection of the protective sublayer onto the substrate sublayer lies within the orthographic projection of the third sublayer onto the substrate sublayer.

[0020] In some embodiments, the surface of the protective sublayer away from the substrate sublayer is parallel to the plane of the substrate sublayer, the surface of the protective sublayer close to the substrate sublayer is parallel to the plane of the substrate sublayer, the thickness of the protective sublayer is greater than or equal to 25 micrometers, and the thickness of the protective sublayer is less than or equal to 50 micrometers.

[0021] In some embodiments, the display panel further includes a bent sub-region located within the display area, the protective sub-layer including at least one groove located on the side of the protective sub-layer away from the substrate sub-layer, the groove being located within the bent sub-region.

[0022] In some embodiments, 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;

[0023] Wherein, the minimum thickness of the first thickness portion is greater than or equal to 30 micrometers, and the minimum thickness of the first thickness portion is less than or equal to 50 micrometers;

[0024] 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.

[0025] The present invention also provides a display device, including the display panel as described above.

[0026] This invention reduces the difficulty of removing the cover layer while enhancing the surface hardness of the side of the cover layer away from the display layer. This improves the user experience, reduces surface scratches, and enhances the product quality of the display panel. By setting a protective sub-layer with higher hardness in the cover layer and making the water droplet angle of the surface of the cover layer and / or display layer in contact with the first adhesive layer greater than or equal to 100 degrees, the present invention improves the user experience and enhances the product quality of the display panel. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of a display panel structure in the prior art;

[0029] Figure 2 This is a schematic diagram of a display panel structure provided in an embodiment of the present invention;

[0030] Figure 3 This is a schematic diagram of the first structure of the cover layer of the display panel provided in an embodiment of the present invention;

[0031] Figure 4 This is a schematic diagram of a second structure of the cover layer of the display panel provided in an embodiment of the present invention;

[0032] Figure 5This is a schematic diagram of a third structure of the cover layer of the display panel provided in an embodiment of the present invention;

[0033] Figure 6 This is a schematic diagram of a protective sublayer of a display panel provided in an embodiment of the present invention;

[0034] Figure 7 This is a schematic diagram of the structure of the display device provided in an embodiment of the present invention. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Furthermore, it should be understood that the specific embodiments described herein are only for illustration and explanation of the present invention and are not intended to limit the present invention. In the present invention, unless otherwise stated, directional terms such as "upper" and "lower" generally refer to the upper and lower positions of the device in actual use or operation, specifically the drawing directions in the accompanying drawings; while "inner" and "outer" refer to the outline of the device.

[0036] Currently, the replaceable cover layer in display panels uses a film layer with low hardness and modulus as the outermost layer, which has technical problems such as poor user experience and easy scratches on the surface.

[0037] Please see Figures 2 to 6 This invention provides a display panel 100, comprising:

[0038] Display layer 101;

[0039] The cover plate layer 102 is located on the light-emitting side of the display layer 101;

[0040] The first adhesive layer 103 is located between the display layer 101 and the cover layer 102;

[0041] The cover layer 102 includes a protective sub-layer 105, which is located on the side of the first adhesive layer 103 away from the display layer 101. The surface hardness of the protective sub-layer 105 on the side away from the first adhesive layer 103 is greater than or equal to 6H, and the surface hardness of the protective sub-layer 105 on the side away from the first adhesive layer 103 is less than or equal to 9H.

[0042] The water droplet angle on the surface of the cover layer 102 that contacts the first adhesive layer 103 is greater than or equal to 100 degrees, and / or the water droplet angle on the surface of the display layer 101 that contacts the first adhesive layer 103 is greater than or equal to 100 degrees.

[0043] In this embodiment of the invention, the surface hardness of the protective sub-layer 105 on the side 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 cover layer 102 on the side away from the display layer 101 (i.e., the side of the cover layer 102 that is touched by the user) is increased, improving the user experience and reducing surface scratches. Simultaneously, 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. This helps maintain the product quality of the display panel 100 and extends its service life.

[0044] In this embodiment of the invention, the water droplet angle on the surface of the cover layer 102 that contacts the first adhesive layer 103 is greater than or equal to 100 degrees, thereby facilitating the separation of the cover layer 102 from the first adhesive layer 103; and / or, the water droplet angle on the surface of the display layer 101 that contacts the first adhesive layer 103 is greater than or equal to 100 degrees, thereby facilitating the separation of the first adhesive layer 103 from the display layer 101. These features help reduce the difficulty of removing the cover layer 102, facilitate the repair or replacement of the cover layer 102, and help maintain the product quality of the display panel 100 and extend its service life.

[0045] In this embodiment of the invention, a protective sub-layer 105 with high hardness is provided on the cover layer 102, and the water droplet angle of the surface of the cover layer 102 and / or the display layer 101 in contact with the first adhesive layer 103 is greater than or equal to 100 degrees. This reduces the difficulty of removing the cover layer 102, while enhancing the surface hardness of the side of the cover layer 102 away from the display layer 101, improving the user experience and reducing the occurrence of surface scratches, thereby improving the product quality of the display panel.

[0046] The technical solution of the present invention will now be described in conjunction with specific embodiments.

[0047] In some embodiments, the difference between the hydrophobicity of the surface of the display layer 101 in contact with the first adhesive layer 103 and the hydrophobicity of the surface of the cover layer 102 in contact with the first adhesive layer 103 facilitates the separation of the display layer 101 from the first adhesive layer 103, or the separation of the cover layer 102 from the first adhesive layer 103. This makes it easier to separate the cover layer 102 from the display layer 101, reduces the difficulty of removing the cover layer 102, and extends the service life of the display panel.

[0048] In some embodiments, when the hydrophobicity of the surface of the display layer 101 in contact with the first adhesive layer 103 is stronger than that 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 display layer 101 in contact with the first adhesive layer 103 is greater than or equal to 100 degrees. For example, it can be 105 degrees, 108 degrees, 110 degrees, 115 degrees, 118 degrees, 120 degrees, etc., so that the surface of the display layer 101 in contact with the first adhesive layer 103 has sufficient hydrophobicity, which is beneficial to the separation of the display layer 101 and the first adhesive layer 103. The water droplet angle can be measured using a water droplet angle tester.

[0049] 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, so that there is sufficient adhesion between the cover layer 102 and the first adhesive layer 103, so that 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.

[0050] Please see Figures 2 to 3 ,and Figure 6 In some embodiments, when the water droplet angle on the surface of the display layer 101 that contacts the first adhesive layer 103 is greater than or equal to 100 degrees, the display layer 101 includes a first sub-layer 115, the side of the first sub-layer 115 that is close to the first adhesive layer 103 contacts the first adhesive layer 103, that is, the water droplet angle on the surface of the first sub-layer 115 that contacts the first adhesive layer 103 is greater than or equal to 100 degrees.

[0051] In some embodiments, the first sublayer 115 may be an anti-fingerprint coating, which has properties such as oil resistance, anti-fingerprint, and waterproof.

[0052] In some embodiments, the material of the first sublayer 115 may be selected from at least one of fluorine-containing inorganic materials and fluorine-containing organic materials. For example, the material of the first sublayer 115 may be selected from fluorosilicone compounds.

[0053] 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 that 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, it can be 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 to the separation of the cover layer 102 and the first adhesive layer 103.

[0054] In some embodiments, when 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, 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 20 degrees, and the water droplet angle of the surface of the display layer 101 in contact with the first adhesive layer 103 is less than or equal to 50 degrees, so that the surface of the display layer 101 in contact with the first adhesive layer 103 has sufficient hydrophilicity, so that there is sufficient adhesive force between the display layer 101 and the first adhesive layer 103, 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 bond the replaced cover layer 102.

[0055] In some embodiments, the high hydrophobicity of the surface of the display layer 101 in contact with the first adhesive layer 103 and the surface of the cover layer 102 in contact with the first adhesive layer 103 facilitates the layer-by-layer separation between the cover layer 102 and the first adhesive layer 103, and between the first adhesive layer 103 and the display layer 101, without any residue of the first adhesive layer 103 remaining on the light-emitting side of the display layer 101. In this case, the water droplet angle on the surface 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 on the surface of the display layer 101 in contact with the first adhesive layer 103 is also greater than or equal to 100 degrees.

[0056] Please see Figure 4In some embodiments, when the water droplet angle on the surface of the cover layer 102 that contacts the first adhesive layer 103 is greater than or equal to 100 degrees, the cover layer 102 further includes a second sub-layer 121. The side of the second sub-layer 121 that is close to the first adhesive layer 103 contacts the first adhesive layer 103, that is, the water droplet angle on the surface of the second sub-layer 121 that contacts the first adhesive layer 103 is greater than or equal to 100 degrees.

[0057] In some embodiments, the second sublayer 121 can be an anti-fingerprint coating, which has properties such as oil resistance, anti-fingerprint, and waterproof.

[0058] In some embodiments, the material of the second sublayer 121 may be selected from at least one of fluorine-containing inorganic materials and fluorine-containing organic materials. For example, the material of the first sublayer 115 may be selected from fluorosilicone compounds.

[0059] Please see Figures 2 to 5 In some embodiments, the cover layer 102 further includes a substrate sublayer 104, which is located between the protective sublayer 105 and the first adhesive layer 103. When the cover layer 102 includes a second sublayer 121, the substrate sublayer 104 is located between the second sublayer 121 and the protective sublayer 105. When the cover layer 102 does not have a second sublayer 121, the substrate sublayer 104 is located between the protective sublayer 105 and the first adhesive layer 103, and the side of the substrate sublayer 104 closest to the first adhesive layer 103 is in contact with the first adhesive layer 103.

[0060] Please see Figures 2 to 6 In some embodiments, the cover layer 102 further includes 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 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 touched by the user) is increased by the protective sub-layer 105, while the third sub-layer 106 protects the protective sub-layer 105, reducing the risk of breakage of the protective sub-layer 105.

[0061] Please see Figures 2 to 6In some embodiments, the third sub-layer 106 is located on the outermost side of the cover layer 102 away from the display layer 101. That is, 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 arrangement of the third sub-layer 106 is beneficial to protect the protective sub-layer 105 and prevent the fragments generated by the protective sub-layer 105 from injuring the user when the protective sub-layer 105 is broken, thereby improving the safety of the display panel 100.

[0062] In some embodiments, the surface hardness of the third sublayer 106 on the side away from the substrate sublayer 104 is greater than the surface hardness of the third sublayer 106 on the side close to the substrate sublayer 104. That is, the surface hardness of the third sublayer 106 on the side close to the substrate sublayer 104 is lower, and the surface hardness of the third sublayer 106 on the side away from the substrate sublayer 104 is higher. This further improves the user experience and reduces the occurrence of surface scratches. At the same time, when the protective sublayer 105 breaks during use, it prevents the fragments generated by the protective sublayer 105 from injuring the user, thereby improving the safety of the display panel 100.

[0063] Please see Figures 5 to 6 In some embodiments, the orthographic projection of the protective sublayer 105 on the substrate sublayer 104 is located within the orthographic projection of the third sublayer 106 on the substrate sublayer 104, which helps to improve the protective effect of the protective sublayer 105 and the safety of the display panel 100.

[0064] Please see Figures 5 to 6 In some embodiments, the protective sublayer 105 includes at least one side surface located between the surface of the protective sublayer 105 away from the substrate sublayer 104 and the surface of the protective sublayer 105 close to the substrate sublayer 104. The third sublayer 106 covers at least one side surface of the protective sublayer 105, improving the protective effect of the third sublayer 106 on the protective sublayer 105 while preventing the protective sublayer 105 from breaking due to cutting when the cover layer 102 is cut and formed, thereby improving the product yield of the display panel 100. Preferably, the third sublayer 106 covers each side surface of the protective sublayer 105.

[0065] In some embodiments, the surface hardness of the third sublayer 106 on the side away from the substrate sublayer 104 is greater than the surface hardness of the substrate sublayer 104 on the side close to the third sublayer 106. This is beneficial for increasing the surface hardness of the cover layer 102 on the side away from the display layer 101, improving the user experience, reducing surface scratches, and improving the product quality of the display panel 100.

[0066] In some embodiments, the surface hardness of the third sublayer 106 on the side away from the substrate sublayer 104 is greater than or equal to 3H, and the surface hardness of the third sublayer 106 on the side away from the substrate sublayer 104 is less than or equal to 9H. For example, it can be 4H, 5H, 6H, 7H, 8H, etc.

[0067] In some embodiments, the third sublayer 106 may be a hard coating. The material of the third sublayer 106 may be a composite material that is a mixture or hybrid of organic and inorganic phases. The material of the third sublayer 106 may be selected from silicon-containing inorganic-organic materials. For example, the material of the third sublayer 106 may be selected from at least one of composite materials having silicon oxide and / or silicon nitride, polymers of siloxanes and acrylics, semi-siloxane polymers, and aliphatic or aromatic polymers containing inorganic silicon groups. When the third sublayer 106 is selected from a composite material that is a mixture or hybrid of organic and inorganic phases, the surface of the third sublayer 106 on the side away from the substrate sublayer 104 has high surface hardness and good recovery properties. For example, when the material of the third sub-layer 106 is selected from a polymer containing siloxane, due to the good recovery properties of such materials, when a stylus or other hard object is used to slide with greater force on the surface of the third sub-layer 106 away from the display layer 101, a fine mark may be left on the surface. When the stylus or other hard object leaves the surface, the fine mark will automatically recover and disappear.

[0068] In some embodiments, the protective sublayer 105 may include ultra-thin glass (UTG) or other organic materials with a certain degree of hardness that can provide support, so as to enhance the surface hardness of the cover layer 102 on the side away from the display layer 101 while meeting the bending performance requirements of the display panel 100.

[0069] In some embodiments, the surface hardness of the protective sublayer 105 on the side away from the substrate sublayer 104 is greater than or equal to 6H, and the surface hardness of the protective sublayer 105 on the side away from the substrate sublayer 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.

[0070] Please see Figures 2 to 5In some embodiments, the cover layer 102 further includes a second adhesive layer 107 located between the substrate sublayer 104 and the protective sublayer 105. The second adhesive layer 107 bonds and secures the protective sublayer 105 to the substrate sublayer 104. When the third sublayer 106 covers at least one side of the protective sublayer 105, the surface portion of the third sublayer 106 near the substrate sublayer 104 contacts the second adhesive layer 107.

[0071] In some embodiments, the materials of the first adhesive layer 103 and the second adhesive layer 107 may be selected from optical adhesives with high light transmittance.

[0072] Please see Figures 2 to 3 In some embodiments, the surface of the protective sublayer 105 away from the substrate sublayer 104 is parallel to the plane containing the substrate sublayer 104, that is, the surface of the protective sublayer 105 away from the substrate sublayer 104 is a flat surface. The surface of the protective sublayer 105 near the substrate sublayer 104 is parallel to the plane containing the substrate sublayer 104, that is, the surface of the protective sublayer 105 near the substrate sublayer 104 is a flat surface. The distance between the surface of the protective sublayer 105 near the substrate sublayer 104 and the surface of the protective sublayer 105 away from the substrate sublayer 104 is the thickness of the protective sublayer 105. The thickness of the protective sublayer 105 is greater than or equal to 25 micrometers, and less than or equal to 50 micrometers. For example, it can be 30 micrometers, 32 micrometers, 35 micrometers, 37 micrometers, 40 micrometers, 42 micrometers, 45 micrometers, 47 micrometers, etc.

[0073] Please see Figures 2 to 3 In some embodiments, when the surface of the protective sublayer 105 away from the substrate sublayer 104 is parallel to the plane of the substrate sublayer 104, the third sublayer 106 includes a first portion 113. The orthographic projection of the first portion 113 on the substrate sublayer 104 lies within the orthographic projection of the protective sublayer 105 on the substrate sublayer 104. The surface of the first portion 113 near the substrate sublayer 104 is parallel to the plane of the substrate sublayer 104, and the surface of the first portion 113 away from the substrate sublayer 104 is also parallel to the plane of the substrate sublayer 104. The distance between the surface of the first portion 113 near the substrate sublayer 104 and the surface of the first portion 113 away from the substrate sublayer 104 is the thickness of the first portion 113. The thickness of the first portion 113 is less than the thickness of the protective sublayer 105, so as to improve the surface hardness of the cover layer 102 away from the substrate sublayer 104, improve the user experience, reduce the occurrence of surface scratches, and improve the product quality of the display panel 100.

[0074] In some embodiments, when the surface of the first portion 113 on the side near the substrate sublayer 104 is parallel to the plane of the substrate sublayer 104, and the surface of the first portion 113 on the side away from the substrate sublayer 104 is parallel to the plane of the substrate sublayer 104, the ratio of the thickness of the first portion 113 to the thickness of the protective sublayer 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 sublayer 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 layer 102 on the side away from the display layer 101, the protective performance of the third sublayer 106 on the protective sublayer 105, etc.

[0075] In some embodiments, the thickness of the first part 113 is greater than or equal to 16 micrometers, or less than or equal to 24 micrometers. For example, it can be 17 micrometers, 18 micrometers, 19 micrometers, 20 micrometers, 21 micrometers, 22 micrometers, 23 micrometers, etc.

[0076] Please see Figures 5 to 6 In some embodiments, when the third sublayer 106 covers the side surface of at least one of the protective sublayers 105, the third sublayer 106 further includes a second portion 114. The orthographic projection of the second portion 114 onto the substrate sublayer 104 is outside the orthographic projection of the protective sublayer 105 onto the substrate sublayer 104, and the second portion 114 covers the side surface of at least one of the protective sublayers 105. The thickness of the second portion 114 is equal to the sum of the thicknesses of the first sublayer and the protective sublayer 105, such that the surface of the third sublayer 106 away from the substrate sublayer 104 is parallel to the plane containing the substrate sublayer 104. The thickness of the second portion 114 is greater than or equal to 41 micrometers, and less than or equal to 74 micrometers. For example, it can be 42 micrometers, 45 micrometers, 46 micrometers, 48 ​​micrometers, 50 micrometers, 52 micrometers, 55 micrometers, 58 micrometers, 60 micrometers, 62 micrometers, 65 micrometers, 68 micrometers, 70 micrometers, 72 micrometers, etc.

[0077] Please see Figures 5 to 6 In some embodiments, the display panel 100 further includes a bending sub-area 108 located within the display area, and the protective sub-layer 105 includes at least one groove 110 located on the side of the protective sub-layer 105 away from the substrate sub-layer 104. The groove 110 is located within the bending sub-area 108. The setting of the groove 110 is beneficial to improving the bending performance of the cover plate layer 102.

[0078] In some embodiments, the groove 110 is located on the 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 near the substrate sub-layer 104 and the side of the protective sub-layer 105 near the substrate sub-layer 104, so as to improve the bending performance of the cover layer 102 while maintaining the supporting performance of the protective sub-layer 105.

[0079] Please see Figure 5 In some embodiments, the grooves 110 are configured in a one-to-one correspondence with the bends 108 of the display panel 100. That is, one groove 110 is located within one bend 108.

[0080] In some embodiments, the groove 110 includes a groove 110 sidewall connected to the side of the groove 110 near the substrate sublayer 104 and the side of the groove 110 away from the substrate sublayer 104, wherein the extension direction of the orthographic projection of the sidewall on the substrate sublayer 104 is parallel to the extension direction of the bending sub-region 108.

[0081] Please see Figure 6 In some embodiments, the protective sublayer 105 further includes a first thickness portion 111 and a second thickness portion 112, wherein the first thickness portion 111 is located within the orthographic projection of the groove 110 on the substrate sublayer 104, and the second thickness portion 112 is located outside the orthographic projection of the groove 110 on the substrate sublayer 104.

[0082] Please see Figure 5 In some embodiments, the display panel 100 further includes a non-bending sub-region 109 connected to the bending sub-region 108, wherein the first thickness portion 111 is located within the bending sub-region 108, and the second thickness portion 112 is at least partially located within the non-bending sub-region 109. The thickness of the second thickness portion 112 is greater than the minimum thickness of the first thickness portion 111, which helps to improve the surface hardness of the side of the cover layer 102 away from the display layer 101 within the non-bending sub-region 109 while ensuring the bending performance of the display panel 100, thereby improving the user experience, reducing surface scratches, and enhancing the product quality of the display panel 100.

[0083] In some embodiments, the minimum thickness of the first thickness portion 111 is greater than or equal to 30 micrometers, and the minimum thickness of the first thickness portion 111 is less than or equal to 50 micrometers. For example, it can be 32 micrometers, 35 micrometers, 36 micrometers, 40 micrometers, 42 micrometers, 45 micrometers, 46 micrometers, 48 ​​micrometers, etc.

[0084] In some embodiments, the thickness of the second thickness portion 112 is greater than or equal to 70 micrometers, or less than or equal to 120 micrometers. For example, it can be 75 micrometers, 80 micrometers, 85 micrometers, 90 micrometers, 95 micrometers, 105 micrometers, 110 micrometers, 115 micrometers, etc.

[0085] Please see Figure 6 In some embodiments, when the protective sublayer 105 includes the first thickness portion 111 and the second thickness portion 112, the first portion 113 of the third sublayer 106 includes a flat sublayer 113a and a filling sublayer 113b. The flat sublayer 113a covers the side of the second thickness portion 112 away from the substrate sublayer 104, and the filling sublayer 113b covers the side of the first thickness portion 111 away from the substrate sublayer 104.

[0086] In some embodiments, the thickness of the flat sub-part 113a is greater than or equal to 16 micrometers, and the thickness of the filled sub-part 113b is less than or equal to 24 micrometers, for example, it can be 17 micrometers, 18 micrometers, 19 micrometers, 20 micrometers, 21 micrometers, 22 micrometers, 23 micrometers, etc.

[0087] In some embodiments, the thickness of the filler portion 113b is greater than or equal to 36 micrometers, and the thickness of the filler portion 113b is less than or equal to micrometers, for example, it can be 40 micrometers, 45 micrometers, 50 micrometers, 55 micrometers, 60 micrometers, 65 micrometers, 70 micrometers, 75 micrometers, 80 micrometers, 85 micrometers, 90 micrometers, 95 micrometers, 105 micrometers, 110 micrometers, etc.

[0088] In some embodiments, when the display panel 100 includes a bending sub-region 108, the display panel 100 has a bent state and a flattened 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 flattened sub-portion 113a. That is, when the display panel 100 is in the flattened state, 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, and the surface of the protective sub-layer 105 away from the substrate sub-layer 104 is parallel to the plane where the substrate sub-layer 104 is located. Preferably, the sum of the thicknesses of the first thickness portion 111 and the filler portion 113b is greater than or equal to 72 micrometers, and the sum of the thicknesses of the first thickness portion 111 and the filler portion 113b is less than or equal to 110 micrometers. For example, it can be 75 micrometers, 80 micrometers, 85 micrometers, 90 micrometers, 92 micrometers, 95 micrometers, 96 micrometers, 105 micrometers, etc.

[0089] In some embodiments, the material of the substrate sublayer 104 may be selected from at least one of polymers with optical properties such as high light transmittance, such as polyethylene terephthalate, polyimide, and thermoplastic polyurethane.

[0090] In some embodiments, the thickness of the substrate sublayer 104 is greater than or equal to 20 micrometers, and the thickness of the substrate sublayer 104 is less than or equal to 50 micrometers. For example, it can be 22 micrometers, 25 micrometers, 28 micrometers, 30 micrometers, 32 micrometers, 35 micrometers, 38 micrometers, 40 micrometers, 42 micrometers, 45 micrometers, 48 ​​micrometers, etc.

[0091] Please refer to Table 1, which shows the performance data results of the impact resistance and abrasion resistance of the display panel provided in the embodiments of this application.

[0092] Table 1: Impact resistance and abrasion resistance data of display panels

[0093]

[0094] Example 1 and Comparative Example 1 serve as a comparative experimental group, with identical testing conditions. The display panel in Example 1 uses the display panel provided in this invention, while the display panel in Comparative Example 1 uses a display panel from the prior art. The difference lies in that the cover layer in Example 1 consists of a substrate sublayer, a second adhesive layer, a protective sublayer, and a third sublayer, while the cover layer in Comparative Example 1 consists of a rigid protective layer and two polymer layers located on the side of the rigid protective layer away from the display layer: a first polymer protective layer and a second polymer protective layer. The rigid protective layer and the display layer are inseparable. The protective sublayer of the cover layer in Example 1 has the same structure as the rigid protective layer in Comparative Example 1. Furthermore, when the display panel is flattened, 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.

[0095] As shown in Table 1, the display panel provided by the present invention is comparable to the display panel provided by the prior art in terms of pen drop test and ball drop test results. Moreover, it has good impact resistance and excellent wear resistance, and the outermost surface of the stylus cover layer is scratched after repeated sliding 2000 times.

[0096] In some embodiments, the display layer 101 includes a plurality of functional film layers in the display panel 100 for display.

[0097] Please see Figure 2In some embodiments, the display layer 101 further includes a polarizing layer 116 and a panel body layer 117, wherein the polarizing layer 116 is located on the side of the panel body layer 117 near the cover layer 102. The first sub-layer 115 may be formed on the surface of the polarizing layer 116 near the first adhesive layer 103, that is, the first sub-layer 115 is located on the side of the polarizing layer 116 near the first adhesive layer 103, and the first sub-layer 115 is in contact with the polarizing layer 116.

[0098] In some embodiments, the panel body layer 117 further includes a substrate on the side away from the cover plate layer 102. The substrate may be a rigid substrate, such as a glass substrate; or the substrate may be a flexible substrate, such as a substrate formed of polyimide. When the substrate is a flexible substrate, it may be formed of multiple sub-substrates of the same material, such as polyimide, with adjacent sub-substrates bonded together by adhesive sub-layers.

[0099] In some embodiments, the panel body layer 117 further includes a thin-film transistor layer located between the substrate and the first sub-layer 115. The thin-film transistor layer includes thin-film transistors, each comprising a semiconductor located on the substrate. The semiconductor may be formed of polycrystalline silicon or a metal oxide (such as indium gallium zinc oxide). The semiconductor is divided into a channel region and source and drain regions formed on either side of the channel region. The thin-film transistor layer further includes a first gate insulating layer covering the semiconductor. The thin-film transistor further includes a first gate formed on the first gate insulating layer, overlapping the channel region. The first gate may be formed as multiple layers or a single layer comprising a low-resistance material such as Al, Ti, Mo, Cu, Ni, or alloys thereof, or a material with high corrosion resistance. The thin-film transistor layer further includes a second gate insulating layer covering the first gate. The thin-film transistor further includes a second gate located on the second gate insulating layer, overlapping the first gate. The second gate may be formed as multiple layers or a single layer comprising a low-resistance material such as Al, Ti, Mo, Cu, Ni, or alloys thereof, or a material with high corrosion resistance. The thin-film transistor layer further includes a first interlayer insulating layer formed on the second gate. The first interlayer insulating layer, the first gate insulating layer, and the second gate insulating layer each include a source contact hole and a drain contact hole, with the source region and drain region exposed through the source contact hole and drain contact hole, respectively.

[0100] The thin-film transistor further includes a source and a drain disposed on the same layer, both formed on the first interlayer insulating layer. The source is connected to the source region through a source contact hole, and the drain is connected to the drain region through a drain contact hole. The source and drain can be multiple layers or a single layer formed of low-resistance materials such as Al, Ti, Mo, Cu, Ni, or their alloys, or materials with high corrosion resistance. For example, the source and drain 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.

[0101] In some embodiments, the panel body layer 117 further includes a planarization layer located between the thin-film transistor layer and the light-emitting layer, the planarization layer covering the source and the drain.

[0102] In some embodiments, the panel body layer 117 further includes an anode layer located between the planarization layer and the first sub-layer 115. The anode layer includes a plurality of anodes, each anode corresponding to a pixel unit. Each anode is electrically connected to a thin-film transistor. The planarization layer includes an anode contact hole, through which the anode contacts the source or drain of the thin-film transistor.

[0103] In some embodiments, the panel body layer 117 further includes a pixel definition layer located on the same side of the substrate as the pixel units. The pixel definition layer includes pixel definition portions and openings located between the pixel definition portions. The panel body layer 117 also includes a light-emitting layer comprising a plurality of pixel units. The pixel units are located within the openings. The openings expose a portion of the anode and cover the edge of the anode. The pixel units may include red pixel units, green pixel units, and blue pixel units.

[0104] 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 includes a hole-injecting organic layer, a light-emitting material layer, and an electronic organic layer stacked sequentially. The hole-injecting organic layer may include a hole injection layer and a hole transport layer, the hole injection layer being in direct contact with the anode, and the hole transport layer being located between the hole injection layer and the light-emitting material layer. The hole-injecting organic layer may further include an electron blocking layer located between the hole transport layer and the light-emitting material layer. The electronic organic layer may include an electron injection layer and an electron transport layer, the electron injection layer being in direct contact with the cathode layer, and the electron transport layer being located between the electron injection layer and the light-emitting material layer. The electronic organic layer may further include a hole blocking layer located between the electron transport layer and the light-emitting layer.

[0105] In some embodiments, the panel body layer 117 further includes an encapsulation layer located on the side of the cathode layer near the cover plate layer 102. The encapsulation layer is formed by alternating stacking of multiple inorganic film layers and organic film layers. For example, along the direction from the display layer 101 to the cover plate layer 102, the encapsulation layer includes a first inorganic encapsulation sublayer, a first organic encapsulation sublayer, and a second inorganic encapsulation sublayer.

[0106] In some embodiments, the panel body layer 117 further includes a touch layer located on the side of the encapsulation layer away from the light-emitting layer. The touch layer can implement touch functionality in a self-capacitive or mutual-capacitive manner. When the touch layer implements touch functionality in a self-capacitive manner, the touch layer may have only one touch metal layer.

[0107] When the touch layer implements touch functionality using capacitive touch, the touch layer includes a first touch metal layer, a touch insulating layer, and a second touch metal layer. 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 spacer layer can be provided between the first touch layer and the encapsulation layer. The spacer layer can include an inorganic spacer layer and / or an organic spacer layer. The first touch metal layer includes a first touch electrode, a second touch electrode, and a first bridging wire; the second touch metal layer includes a second bridging wire; both the first touch electrode and the second touch electrode are metal networks. Alternatively, the second touch metal layer includes a first touch electrode, a second touch electrode, and a first bridging wire, and the first touch metal layer includes a second bridging wire.

[0108] Please see Figure 2 In some embodiments, the display panel 100 further includes a backplate layer 118 located on the side of the substrate away from the cover plate layer 102, a light-shielding layer 119 located on the side of the backplate 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 backplate layer 118 can be made of a flexible material, such as polyimide, to maintain the bending performance of the display panel 100; alternatively, the backplate layer 118 can use the same material as the support layer 120. The material of the light-shielding layer 119 can be selected from a black, flexible material, such as black polyimide. The material of the support layer 120 can be selected from a metal material with good heat dissipation properties, such as stainless steel. Both the support layer 120 and the backplate layer 118 can provide a certain degree of fixation and support.

[0109] The display panel 100 provided in this embodiment of the invention has a protective sub-layer 105 with greater hardness on the side of the substrate sub-layer 104 of the cover layer 102 away from the first adhesive layer 103. This reduces the difficulty of removing the cover layer 102, while enhancing the surface hardness of the side of the cover layer 102 away from the display layer 101, improving the user experience and reducing the occurrence of surface scratches, thereby improving the product quality of the display panel 100.

[0110] Please see Figure 7 The present invention also provides a display device 10, including a display panel 100 as described above.

[0111] For the specific structure of the display panel 100, please refer to any of the above-mentioned embodiments and accompanying drawings of the display panel, which will not be repeated here.

[0112] In some embodiments, the display device 10 further includes a device body 200, which is integrated with the display panel 100.

[0113] In some embodiments, the main body 200 of the device may include a middle frame, frame adhesive, etc., and the display device 10 may be a display terminal such as a mobile phone, tablet, or television, which is not limited here.

[0114] This invention discloses a display panel and a display device. The display panel includes 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 includes a protective sub-layer located on the side of the first adhesive layer away from the display layer. The surface hardness of the protective sub-layer on the side away from the first adhesive layer is greater than or equal to 6H and less than or equal to 9H. The water droplet 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. By setting a protective sub-layer with high hardness on the cover layer and making the water droplet angle of the surface of the cover layer and / or the display layer in contact with the first adhesive layer greater than or equal to 100 degrees, this invention reduces the difficulty of removing the cover layer while enhancing the surface hardness of the side of the cover layer away from the display layer, improving the user experience, reducing the occurrence of surface scratches, and improving the product quality of the display panel.

[0115] The above provides a detailed description of a display panel and display device provided by the embodiments of the present invention. Specific examples have been used to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of the present invention. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of the present invention. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A display panel, characterized in that, include: Display layer; The cover plate layer is located on the light-emitting side of the display layer; A first adhesive layer is located between the display layer and the cover plate layer; The cover layer includes a protective sub-layer, which is located on the side of the first adhesive layer away from the display layer. The surface of the protective sub-layer away from the first adhesive layer has a hardness greater than or equal to 6H, and the surface of the protective sub-layer away from the first adhesive layer has a hardness less than or equal to 9H. The water droplet angle on the surface of the cover plate layer that contacts the first adhesive layer is greater than or equal to 100 degrees, and / or the water droplet angle on the surface of the display layer that contacts the first adhesive layer is greater than or equal to 100 degrees. The cover layer further includes a substrate sublayer and a third sublayer, wherein the substrate sublayer is located between the protective sublayer and the first adhesive layer, and the protective sublayer is located between the third sublayer and the substrate sublayer; Wherein, the hardness of the surface of the third sublayer away from the substrate sublayer is less than or equal to the hardness of the surface of the protective sublayer away from the substrate sublayer, and the orthographic projection of the protective sublayer on the substrate sublayer is located within the orthographic projection of the third sublayer on the substrate sublayer.

2. The display panel according to claim 1, characterized in that, The water droplet angle on the surface of the display layer that contacts the first adhesive layer is greater than or equal to 100 degrees, the water droplet angle on the surface of the cover plate layer that contacts the first adhesive layer is greater than or equal to 20 degrees, and the water droplet angle on the surface of the cover plate layer that contacts the first adhesive layer is less than or equal to 50 degrees.

3. The display panel according to claim 2, characterized in that, The display layer includes a first sublayer, which is in contact with the first adhesive layer on the side closest to the first adhesive layer, and the material of the first sublayer includes a fluorine-containing inorganic material.

4. The display panel according to claim 1, characterized in that, The water droplet angle on the surface of the cover plate layer that contacts the first adhesive layer is greater than or equal to 100 degrees. The cover plate layer also includes a second sub-layer. The side of the second sub-layer closest to the first adhesive layer contacts the first adhesive layer. The material of the second sub-layer includes a fluorine-containing inorganic material.

5. The display panel according to claim 1, characterized in that, in, The hardness of the surface of the substrate sublayer away from the first adhesive layer is less than the hardness of the surface of the protective sublayer away from the first adhesive layer.

6. The display panel according to claim 1, characterized in that, The hardness of the surface of the third sublayer away from the substrate sublayer is greater than the hardness of the surface of the third sublayer closer to the substrate sublayer.

7. The display panel according to claim 1, characterized in that, The surface of the protective sublayer away from the substrate sublayer is parallel to the plane of the substrate sublayer, and the surface of the protective sublayer close to the substrate sublayer is parallel to the plane of the substrate sublayer. The thickness of the protective sublayer is greater than or equal to 25 micrometers and less than or equal to 50 micrometers.

8. The display panel according to claim 1, characterized in that, The display panel further includes a bent sub-region located within the display area, and the protective sub-layer includes at least one groove located on the side of the protective sub-layer away from the substrate sub-layer, and the groove is located within the bent sub-region.

9. The display panel according to claim 8, characterized in that, 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 micrometers, and the minimum thickness of the first thickness portion is less than or equal to 50 micrometers; 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.

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

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