Display panel, display panel laminating method, laminating jig and display device

Abstract

The invention discloses a display panel, a display panel attaching method, an attaching jig and a display device, the display panel comprises a plane area and a curved surface area which are adjacent to each other, the display panel comprises a cover plate, and the cover plate comprises a light emitting surface and a backlight surface which are opposite to each other; the shading layer is arranged on the backlight layer of the cover plate, at least part of the shading layer is arranged in the curved surface area, and in the curved surface area, the surface of the side, away from the cover plate, of the shading layer is provided with a hole-shaped structure; and at least part of the viscous glue layer is arranged on the side, away from the cover plate, of the shading layer, and the viscous glue layer is partially embedded into the hole-shaped structure. The sticky glue layer can be partially embedded into the hole-shaped structure, so that the binding force between the sticky glue layer and the cover plate is improved, the rebounding risk of the sticky glue layer is reduced, the purpose of improving rebounding bubbles is achieved, and the use performance of the display panel is improved.

Description

Technical Field

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

[0002] Organic Light Emitting Diode (OLED) and flat panel display devices based on technologies such as Light Emitting Diode (LED) have been widely used in various consumer electronic products such as mobile phones, televisions, laptops, desktop computers, etc. due to their advantages such as high image quality, power saving, thin body and wide application range, becoming the mainstream in display devices.

[0003] However, the performance of current OLED display products needs to be improved.

[0004] Therefore, there is an urgent need for a new display panel, a display panel bonding method, a bonding fixture and a display device. Summary of the invention

[0005] The embodiments of the present application provide a display panel, a display panel bonding method, a bonding jig and a display device. A hole structure is provided on the surface of the side of the light-shielding layer facing away from the cover plate. The adhesive layer can be partially embedded in the hole structure to enhance the bonding strength between the adhesive layer and the cover plate and reduce the rebound risk of the adhesive layer, thereby achieving the purpose of improving the generation of rebound bubbles and improving the performance of the display panel.

[0006] On the one hand, an embodiment of the present application provides a display panel, which includes adjacent flat areas and curved areas, and the display panel includes: a cover plate, the cover plate including opposite light-emitting surfaces and backlight surfaces; a shading layer, which is arranged on the backlight layer of the cover plate and is at least partially arranged on the curved area, and in the curved area, a surface of the shading layer on a side away from the cover plate is provided with a hole-like structure; an adhesive layer, which is at least partially arranged on a side of the shading layer away from the cover plate, and the adhesive layer is partially embedded in the hole-like structure.

[0007] According to one aspect of the present application, the porous structure includes a plurality of openings arranged at intervals, and the minimum distance between adjacent openings is greater than or equal to 0.1 mm and less than or equal to 0.3 mm; preferably, the minimum distance between adjacent openings is equal to 0.2 mm; preferably, the shading layer includes an ink layer.

[0008] According to one aspect of the present application, the opening is at least one of cylindrical and conical; preferably, the diameter of the conical opening is greater than or equal to 0.05 mm and less than or equal to 0.1 mm.

[0009] According to one aspect of the present application, the depth of the opening is greater than or equal to 0.002 mm and less than or equal to 0.01 mm; preferably, the depth of the opening is equal to 0.005 mm.

[0010] According to one aspect of the present application, the curved surface area includes at least two corner curved surface areas, and the corners of the corner curved surface areas and the corners of the planar area are arranged correspondingly; at least in the corner curved surface area, the surface of the shading layer facing away from the cover plate is provided with a hole structure.

[0011] On the other hand, an embodiment of the present application provides a display panel bonding method, wherein the display panel includes adjacent flat areas and curved areas, and the display panel bonding method includes the following steps: providing a cover plate, wherein the cover plate includes opposite light-emitting surfaces and backlight surfaces; forming a light-shielding material layer on at least one side of the backlight surface of the cover plate located in the curved area; pressing the surface of the light-shielding material layer away from the cover plate using a pressing jig to form a hole-like structure, thereby forming a light-shielding layer; and forming a sticky adhesive layer on at least one side of the light-shielding layer away from the cover plate, wherein the sticky adhesive layer is partially embedded in the hole-like structure.

[0012] According to another aspect of the present application, after the step of forming a shading material layer at least on one side of the backlight surface of the cover plate located in the curved area, it also includes: pre-curing the shading material layer; preferably, pre-curing the shading material layer in an environment with a temperature of 100°C for 1 minute.

[0013] According to another aspect of the present application, the step of pressing the side surface of the shading material layer away from the cover plate by a pressing jig to form a hole-like structure to form a shading layer includes: the pressing jig includes a pressing body and a convex structure provided on the pressing surface of the pressing body, the convex structure includes a plurality of spaced-apart protrusions, the convex structure is pressed into the side surface of the shading material layer away from the cover plate to form a hole-like structure to form a shading layer; preferably, the hole-like structure includes a plurality of spaced-apart openings, the minimum distance between adjacent openings is greater than or equal to 0.1 mm, and less than or equal to 0.3 mm; preferably, the minimum distance between adjacent openings is equal to 0.2 mm; preferably, the shading layer includes an ink layer; preferably, the opening is at least one of cylindrical and conical; preferably, the diameter of the conical opening is greater than or equal to 0.05 mm, and less than or equal to 0.1 mm. Preferably, the depth of the opening is greater than or equal to 0.002 mm and less than or equal to 0.01 mm; preferably, the depth of the opening is equal to 0.005 mm.

[0014] Another aspect of the embodiments of the present application provides a bonding jig for use in the display panel bonding method in any of the above embodiments, the bonding jig comprising: a bonding body and a convex point structure provided on the bonding surface of the bonding body, the convex point structure comprising a plurality of raised portions arranged at intervals.

[0015] Another aspect of the embodiments of the present application provides a display device, comprising the display panel in any of the above embodiments.

[0016] Compared with the prior art, the display panel provided by the embodiment of the present invention includes a cover plate, a light-shielding layer and a sticky adhesive layer. A porous structure is provided on the surface of the light-shielding layer facing away from the cover plate. The sticky adhesive layer can be partially embedded in the porous structure to enhance the bonding force between the sticky adhesive layer and the cover plate, offset the rebound stress of the sticky adhesive layer at the corresponding position of the curved surface area, and reduce the possibility of rebound bubbles when the sticky adhesive layer is attached. Specifically, when the sticky adhesive layer rebounds, the friction between the sticky adhesive layer embedded in the porous structure of the light-shielding layer and the edge of the porous structure can reduce the rebound risk of the sticky adhesive layer, thereby achieving the purpose of improving the generation of rebound bubbles and improving the performance of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 is a schematic structural diagram of a display panel provided by an embodiment of the present invention;

[0019] Figure 2 An embodiment provides Figure 1 The film structure diagram at the middle BB;

[0020] Figure 3 An embodiment provides Figure 2 A schematic diagram of the enlarged structure of the middle area D;

[0021] Figure 4 An embodiment provides Figure 1 Schematic diagram of the enlarged structure of the middle area C;

[0022] Figure 5 is a flow chart of a display panel bonding method provided by an embodiment of the present invention;

[0023] Figure 6 is a cross-sectional schematic diagram of a structure obtained in step S110 in a display panel bonding method provided by an embodiment of the present invention;

[0024] Figure 7 is a cross-sectional schematic diagram of a structure obtained in step S120 in a display panel bonding method provided by an embodiment of the present invention;

[0025] Figure 8 is a cross-sectional schematic diagram of a structure obtained in step S130 in a display panel bonding method provided by an embodiment of the present invention;

[0026] Fig. 9 is a schematic structural diagram of a bonding jig provided by an embodiment of the present invention;

[0027] Fig.10 It is a partial schematic diagram of a bonding jig provided in one embodiment of the present invention.

[0028] In the attached figure:

[0029] 1-cover plate; 2-light shielding layer; 21-porous structure; 2'-light shielding material layer; 3-adhesive layer; 4-bonding jig; 41-pressing body; 42-bump structure; PA-plane area; QA-curved area. DETAILED DESCRIPTION

[0030] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only configured to explain the present application and are not configured to limit the present application. For those skilled in the art, the present application can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by illustrating the examples of the present application.

[0031] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "include..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0032] It should be understood that when describing the structure of a component, when a layer or a region is referred to as being "on" or "over" another layer or another region, it may mean that it is directly on the other layer or another region, or that other layers or regions are included between it and the other layer or another region. Moreover, if the component is turned over, the layer or a region will be "below" or "beneath" another layer or another region.

[0033] It is obvious to those skilled in the art that various modifications and changes can be made in the present application without departing from the spirit or scope of the present application. Therefore, the present application is intended to cover modifications and changes of the present application that fall within the scope of the corresponding claims (technical solutions for protection) and their equivalents. It should be noted that the implementation methods provided in the embodiments of the present application can be combined with each other without contradiction.

[0034] The embodiments of the present application provide a display panel, a display panel bonding method, a bonding fixture and a display device. Figures 1 to 10 Various embodiments of a display panel, a display panel laminating method, a laminating jig, and a display device are described.

[0035] See also Figures 1 to 3 A display panel provided in an embodiment of the present application includes adjacent flat areas PA and curved areas QA, and the display panel includes: a cover plate 1, the cover plate 1 includes opposite light-emitting surfaces and backlight surfaces; a shading layer 2, arranged on the backlight layer of the cover plate 1, and at least partially arranged on the curved area QA, in the curved area QA, a surface of the shading layer 2 facing away from the cover plate 1 is provided with a hole structure 21; an adhesive layer 3, at least partially arranged on the side of the shading layer 2 facing away from the cover plate 1, and the adhesive layer 3 is partially embedded in the hole structure 21.

[0036] The display panel provided by the embodiment of the present invention includes a cover plate 1, a light-shielding layer 2 and a sticky adhesive layer 3. A porous structure 21 is provided on the surface of the light-shielding layer 2 facing away from the cover plate 1. The sticky adhesive layer 3 can be partially embedded in the porous structure 21 to enhance the bonding force between the sticky adhesive layer 3 and the cover plate 1, offset the rebound stress of the sticky adhesive layer 3 at the corresponding position of the curved area QA, and reduce the possibility of rebound bubbles when the sticky adhesive layer 3 is attached. Specifically, when the sticky adhesive layer 3 rebounds, the friction between the sticky adhesive layer 3 embedded in the porous structure 21 of the light-shielding layer 2 and the edge of the porous structure 21 can reduce the rebound risk of the sticky adhesive layer 3, thereby achieving the purpose of improving the generation of rebound bubbles and improving the performance of the display panel.

[0037] In this embodiment, the cover plate 1 is a film layer made of materials such as glass with high light transmittance, which plays a role in protecting the display panel. Specifically, it can be made of flexible materials so that the cover plate 1 can be folded, so that it can be applied to flexible, curved display panels. Specifically, the cover plate 1 can be made of transparent, soft, and foldable materials such as UTG (Ultra Thin Glass), CPI (Colorless Polyimide), and PET (Polyethylene Terephthalate) to achieve the bendability of the cover plate 1, which is convenient for application in flexible display panels.

[0038] The curved area QA usually corresponds to the edge of the display panel, at least part of the curved area QA is not displayed, and is used to set components such as the wiring of the display panel, and the light shielding layer 2 is provided in the curved area QA, which can be used to shield the wiring of the display panel and other components that may reflect light, so as to ensure the integrated black effect of the display panel and avoid the problem of visible wiring of the display panel. Optionally, the light shielding layer 2 may include an ink layer, for example, the light shielding layer 2 may include a black ink layer to ensure the light shielding effect.

[0039] Optionally, the adhesive layer 3 may be made of OCA (Optically Clear Adhesive). OCA adhesive is a double-sided adhesive tape without a base material obtained by making optical acrylic adhesive into a base material, and then laminating a layer of release film on the upper and lower base layers. The adhesive layer of OCA has uniform thickness and high flatness; it has high adhesion and high bonding strength after lamination. Of course, the adhesive layer 3 may also be made of adhesive layers of other materials, such as photosensitive adhesive.

[0040] See also Figure 3 to Figure 4 In some optional embodiments, the porous structure 21 includes a plurality of openings arranged at intervals, and the minimum distance between adjacent openings is greater than or equal to 0.1 mm and less than or equal to 0.3 mm.

[0041] It can be understood that the minimum distance between adjacent openings should not be too small. If it is too small, it will be inconvenient to open and difficult to process. If the minimum distance between adjacent openings is too large, it will also affect the bonding strength between the adhesive layer 3 and the cover plate 1. Optionally, the minimum distance between adjacent openings can be equal to any one of 0.1mm, 0.15mm, 0.2mm, 0.25mm, and 0.3mm.

[0042] In some optional embodiments, the opening is at least one of cylindrical and conical. It can be understood that when the opening is cylindrical, the accommodation space of the opening can be increased, so that more adhesive layers can enter the opening, thereby improving the connection effect between the light shielding layer 2 and the adhesive layer 3. When the opening is conical, it is easy to form.

[0043] Optionally, the diameter of the tapered opening is greater than or equal to 0.05 mm and less than or equal to 0.1 mm. The diameter of the tapered opening should not be too large, otherwise it will easily affect the light shielding of the light shielding layer 2, and the diameter of the tapered opening should not be too small, otherwise it will make it difficult for the adhesive layer 3 to enter the opening. The smaller the amount of the adhesive layer 3 entering the opening, the smaller the bonding force between the light shielding layer 2 and the adhesive layer 3. Therefore, in order to ensure that the bonding force between the light shielding layer 2 and the adhesive layer 3 meets the requirements, the diameter of the tapered opening can be equal to any one of 0.05 mm, 0.06 mm, 0.07 mm, 0.08 mm, 0.09 mm, and 0.1 mm.

[0044] It is understandable that the depth of the opening can affect the amount of the adhesive layer 3 entering the opening and the light shielding effect of the light shielding layer 2. Optionally, the depth of the opening is greater than or equal to 0.002 mm and less than or equal to 0.01 mm. Similarly, the depth of the opening should not be too large, otherwise it will easily affect the light shielding effect of the light shielding layer 2. The depth of the opening should not be too small, otherwise it will cause the amount of the adhesive layer 3 entering the opening to be small. The smaller the amount of the adhesive layer 3 entering the opening, the smaller the bonding force between the light shielding layer 2 and the adhesive layer 3. Optionally, the depth of the opening can be equal to any one of 0.002 mm, 0.003 mm, 0.004 mm, 0.005 mm, 0.006 mm, 0.007 mm, 0.008 mm, 0.009 mm, and 0.01 mm.

[0045] See also Figure 1 In some optional embodiments, the curved surface area QA includes at least two corner curved surface areas, and the corners of the corner curved surface area and the corners of the plane area PA are correspondingly arranged; at least in the corner curved surface area, the surface of the shading layer 2 facing away from the cover plate 1 is provided with a hole structure 21.

[0046] It should be noted that when the plane area PA is rectangular or quasi-rectangular, the corner curved surface areas can be respectively set corresponding to the four corners of the plane area PA to form a four-curved 4R corner display panel. In the prior art, since the adhesive layer 3 will generate rebound stress returning to the plane in the corner curved surface area, this stress will cause the adhesive layer 3 to rebound and crack with the surface of the cover plate 1 after attachment, resulting in rebound bubble defects. In order to improve the above problem, in this embodiment, at least in the corner curved surface area, the surface of the light shielding layer 2 facing away from the cover plate 1 is provided with a hole-shaped structure 21 to enhance the bonding force between the adhesive layer 3 and the cover plate 1, offset the rebound stress of the adhesive layer 3 at the corresponding position of the curved surface area QA, and reduce the possibility of rebound bubbles when the adhesive layer 3 is attached.

[0047] See also Figure 5The embodiment of the present invention further provides a display panel bonding method, wherein the display panel includes adjacent flat surface areas PA and curved surface areas QA, and the display panel bonding method includes the following steps:

[0048] S110: Provide a cover plate 1, the cover plate 1 comprising a light emitting surface and a backlight surface opposite to each other, such as Figure 6 As shown;

[0049] S120: forming a light shielding material layer 2' at least on the backlight side of the cover plate 1 located in the curved area QA, such as Figure 7 As shown;

[0050] S130: Using a pressing jig, press the surface of the light-shielding material layer 2' away from the cover plate 1 to form a hole-shaped structure 21, thereby forming a light-shielding layer 2. Figure 8 As shown;

[0051] S140: forming an adhesive layer 3 at least on the side of the light shielding layer 2 facing away from the cover plate 1, and partially embedding the adhesive layer 3 into the hole structure 21, such as Figure 2 shown.

[0052] In the display panel bonding method provided in the embodiment of the present application, a pressing jig is used to press the side surface of the shading material layer 2' away from the cover plate 1 to form a porous structure 21, thereby forming a shading layer 2 of the required structure. After that, the adhesive layer 3 can be partially embedded in the porous structure 21 to enhance the bonding force between the adhesive layer 3 and the cover plate 1, offset the rebound stress of the adhesive layer 3 at the corresponding position of the curved area QA, and reduce the possibility of rebound bubbles generated when the adhesive layer 3 is attached. Specifically, when the adhesive layer 3 rebounds, the friction between the adhesive layer 3 embedded in the porous structure 21 of the shading layer 2 and the edge of the porous structure 21 can reduce the rebound risk of the adhesive layer 3, thereby achieving the purpose of improving the generation of rebound bubbles and improving the performance of the display panel.

[0053] In step S110, the cover plate 1 can be made of a flexible material so that the cover plate 1 can be folded, so that it can be applied to a flexible, curved display panel. Specifically, the cover plate 1 can be made of transparent, soft, and foldable materials such as UTG (Ultra Thin Glass), CPI (Colorless Polyimide), and PET (Polyethylene Terephthalate).

[0054] In step S120 , the light-shielding material layer 2 ′ may be formed by an IJP (Inkjet printing) process or the like, and the light-shielding material layer 2 ′ may include ink material.

[0055] In step S130 , the pressing jig may be provided with a corresponding convex structure 42 , so that after the pressing jig is pressed onto the light shielding material layer 2 ′, a corresponding hole structure 21 can be formed on the light shielding material layer 2 ′.

[0056] For example, the step of forming the light-shielding layer 2 by laminating the side surface of the light-shielding material layer 2' away from the cover plate 1 through a laminating jig to form a hole-like structure 21 includes: the laminating jig includes a laminating body 41 and a convex structure 42 arranged on the laminating surface of the laminating body 41, the convex structure 42 includes a plurality of spaced-apart protrusions, the convex structure 42 is pressed into the side surface of the light-shielding material layer 2' away from the cover plate 1 to form the hole-like structure 21, thereby forming the light-shielding layer 2.

[0057] In this embodiment, the shape, size and distribution of the protrusions need to be selected according to the corresponding parameters of the hole-like structure 21 to be formed.

[0058] Optionally, the protrusion is at least one of cylindrical and conical.

[0059] Optionally, the minimum distance between adjacent protrusions is greater than or equal to 0.1 mm and less than or equal to 0.3 mm. For example, the minimum distance between adjacent protrusions may be equal to any one of 0.1 mm, 0.15 mm, 0.2 mm, 0.25 mm, and 0.3 mm.

[0060] Optionally, the diameter of the tapered protrusion is greater than or equal to 0.05 mm and less than or equal to 0.1 mm. For example, the diameter of the tapered protrusion may be equal to any one of 0.05 mm, 0.06 mm, 0.07 mm, 0.08 mm, 0.09 mm, and 0.1 mm.

[0061] Optionally, the depth of the protrusion is greater than or equal to 0.002 mm and less than or equal to 0.01 mm. For example, the depth of the protrusion may be equal to any one of 0.002 mm, 0.003 mm, 0.004 mm, 0.005 mm, 0.006 mm, 0.007 mm, 0.008 mm, 0.009 mm, and 0.01 mm.

[0062] In some optional embodiments, after the step of forming the light shielding material layer 2' at least on the backlight side of the cover plate 1 located in the curved area QA, the method further includes: pre-curing the light shielding material layer 2'.

[0063] By pre-curing the shading material layer 2', the strength and rigidity of the shading material can be improved, the surface of the shading material can be kept dry, and adhesion between the bonding jig 4 and the shading material can be avoided. Optionally, the shading material layer 2' can be pre-cured for 1 minute in an environment with a temperature of 100°C to ensure that the surface of the shading material is dry. While the bonding jig 4 does not stick to the shading material, the shading layer 2 with a porous structure 21 in the curved surface area QA can be fixed under the jig pressing.

[0064] According to actual needs, the light shielding material layer 2' can be pre-cured before the step of forming the light shielding layer 2 by forming the hole-shaped structure 21 on the side surface of the light shielding material layer 2' away from the cover plate 1 by a pressing jig to form the light shielding layer 2, so as to ensure that the size and shape of the formed hole-shaped structure 21 meet the requirements. Alternatively, the light shielding material layer 2' can also be pre-cured after the step of forming the light shielding layer 2 by forming the hole-shaped structure 21 on the side surface of the light shielding material layer 2' away from the cover plate 1 by a pressing jig, and there is no special limitation.

[0065] See also Figures 9 and 10 The embodiment of the present invention further provides a bonding jig 4, which is used in the display panel bonding method in any of the above embodiments. The bonding jig 4 includes: a bonding body 41 and a convex point structure 42 arranged on the bonding surface of the bonding body 41, and the convex point structure 42 includes a plurality of convex parts arranged at intervals.

[0066] In this embodiment, the shape, size and distribution of the protrusions need to be selected according to the corresponding parameters of the hole-like structure 21 to be formed.

[0067] Optionally, the protrusion is at least one of cylindrical and conical.

[0068] Optionally, the minimum distance between adjacent protrusions is greater than or equal to 0.1 mm and less than or equal to 0.3 mm. For example, the minimum distance between adjacent protrusions may be equal to any one of 0.1 mm, 0.15 mm, 0.2 mm, 0.25 mm, and 0.3 mm.

[0069] Optionally, the diameter of the tapered protrusion is greater than or equal to 0.05 mm and less than or equal to 0.1 mm. For example, the diameter of the tapered protrusion may be equal to any one of 0.05 mm, 0.06 mm, 0.07 mm, 0.08 mm, 0.09 mm, and 0.1 mm.

[0070] Optionally, the depth of the protrusion is greater than or equal to 0.002 mm and less than or equal to 0.01 mm. For example, the depth of the protrusion may be equal to any one of 0.002 mm, 0.003 mm, 0.004 mm, 0.005 mm, 0.006 mm, 0.007 mm, 0.008 mm, 0.009 mm, and 0.01 mm.

[0071] Optionally, the porous structure 21 includes a plurality of openings arranged at intervals, and the minimum distance between adjacent openings is greater than or equal to 0.1 mm and less than or equal to 0.3 mm.

[0072] It can be understood that the minimum distance between adjacent openings should not be too small. If it is too small, it will be inconvenient to open and difficult to process. If the minimum distance between adjacent openings is too large, it will also affect the bonding strength between the adhesive layer 3 and the cover plate 1. Optionally, the minimum distance between adjacent openings can be equal to any one of 0.1mm, 0.15mm, 0.2mm, 0.25mm, and 0.3mm.

[0073] In some optional embodiments, the opening is at least one of cylindrical and conical. It can be understood that when the opening is cylindrical, the accommodation space of the opening can be increased, so that more adhesive layers can enter the opening, thereby improving the connection effect between the light shielding layer 2 and the adhesive layer 3. When the opening is conical, it is easy to form.

[0074] Optionally, the diameter of the tapered opening is greater than or equal to 0.05 mm and less than or equal to 0.1 mm. The diameter of the tapered opening should not be too large, otherwise it will easily affect the light shielding of the light shielding layer 2, and the diameter of the tapered opening should not be too small, otherwise it will make it difficult for the adhesive layer 3 to enter the opening. The smaller the amount of the adhesive layer 3 entering the opening, the smaller the bonding force between the light shielding layer 2 and the adhesive layer 3. Therefore, in order to ensure that the bonding force between the light shielding layer 2 and the adhesive layer 3 meets the requirements, the diameter of the tapered opening can be equal to any one of 0.05 mm, 0.06 mm, 0.07 mm, 0.08 mm, 0.09 mm, and 0.1 mm.

[0075] It is understandable that the depth of the opening can affect the amount of the adhesive layer 3 entering the opening and the light shielding effect of the light shielding layer 2. Optionally, the depth of the opening is greater than or equal to 0.002 mm and less than or equal to 0.01 mm. Similarly, the depth of the opening should not be too large, otherwise it will easily affect the light shielding effect of the light shielding layer 2. The depth of the opening should not be too small, otherwise it will cause the amount of the adhesive layer 3 entering the opening to be small. The smaller the amount of the adhesive layer 3 entering the opening, the smaller the bonding force between the light shielding layer 2 and the adhesive layer 3. Optionally, the depth of the opening can be equal to any one of 0.002 mm, 0.003 mm, 0.004 mm, 0.005 mm, 0.006 mm, 0.007 mm, 0.008 mm, 0.009 mm, and 0.01 mm.

[0076] An embodiment of the present invention further provides a display device, comprising the display panel in any of the above embodiments.

[0077] The display device provided by the embodiment of the present invention has the technical effect of the technical solution of the display panel in any of the above embodiments, and the explanation of the structures and terms that are the same as or corresponding to the above embodiments will not be repeated here.

[0078] The display device provided in the embodiment of the present invention may be an organic light-emitting diode (OLED) display device, a quantum dot light-emitting diode (QLED) or a micro flat panel display device (Micro-OLED or Micro-LED).

[0079] The display device provided in the embodiment of the present application can be applied to a mobile phone, or it can be any electronic product with a display function, including but not limited to the following categories: televisions, laptops, desktop displays, tablet computers, digital cameras, smart bracelets, smart glasses, car displays, medical equipment, industrial control equipment, touch interactive terminals, etc. The embodiment of the present application does not make any special limitations on this.

[0080] The above are only specific implementation methods of the present application. Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working processes of the systems, modules and units described above can refer to the corresponding processes in the aforementioned method embodiments, and will not be repeated here. It should be understood that the protection scope of the present application is not limited to this. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed in this application, and these modifications or replacements should be included in the protection scope of this application.

[0081] It should also be noted that the exemplary embodiments mentioned in this application describe some methods or systems based on a series of steps or devices. However, this application is not limited to the order of the above steps, that is, the steps can be performed in the order mentioned in the embodiment, or in a different order from the embodiment, or several steps can be performed simultaneously.

Claims

1. A display panel, characterized in that: The display panel includes adjacent planar areas and curved areas, and the display panel includes: A cover plate, the cover plate comprising a light emitting surface and a backlight surface opposite to each other; A light shielding layer is provided on the backlight layer of the cover plate, and is at least partially provided on the curved surface area, wherein a hole-shaped structure is provided on a surface of the light shielding layer on a side away from the cover plate in the curved surface area; The adhesive layer is at least partially disposed on a side of the light shielding layer away from the cover plate, and the adhesive layer is partially embedded in the hole structure.

2. The display panel according to claim 1, characterized in that: The hole-like structure comprises a plurality of openings arranged at intervals, and the minimum distance between adjacent openings is greater than or equal to 0.1 mm and less than or equal to 0.3 mm; Preferably, the minimum distance between adjacent openings is equal to 0.2 mm; Preferably, the light-shielding layer includes an ink layer.

3. The display panel according to claim 2, characterized in that: The opening is at least one of cylindrical and conical; Preferably, the diameter of the tapered opening is greater than or equal to 0.05 mm and less than or equal to 0.1 mm.

4. The display panel according to claim 2, characterized in that: The depth of the opening is greater than or equal to 0.002 mm and less than or equal to 0.01 mm; Preferably, the depth of the opening is equal to 0.005 mm.

5. The display panel according to claim 1, characterized in that: The curved surface area includes at least two corner curved surface areas, and the corner curved surface areas are arranged correspondingly to the corners of the plane area; At least in the edge and corner curved surface area, a surface of the light shielding layer facing away from the cover plate is provided with a hole-shaped structure.

6. A display panel bonding method, characterized in that: The display panel includes adjacent flat areas and curved areas, and the display panel bonding method includes the following steps: Providing a cover plate, the cover plate comprising a light emitting surface and a backlight surface opposite to each other; forming a light shielding material layer at least on one side of the backlight surface of the cover plate located in the curved surface area; The surface of the light-shielding material layer on one side facing away from the cover plate is pressed by a pressing jig to form a hole-shaped structure, thereby forming a light-shielding layer; A sticky adhesive layer is formed at least on the side of the light shielding layer facing away from the cover plate, and a portion of the sticky adhesive layer is embedded in the hole-shaped structure.

7. The display panel bonding method according to claim 6, characterized in that: After the step of forming a light shielding material layer at least on one side of the backlight surface of the cover plate located in the curved surface area, the method further includes: Pre-curing the light-shielding material layer; Preferably, the light-shielding material layer is pre-cured in an environment with a temperature of 100° C. for 1 minute.

8. The display panel bonding method according to claim 6, characterized in that: The step of pressing the surface of the light-shielding material layer away from the cover plate by a pressing jig to form a hole-shaped structure to form a light-shielding layer includes: The pressing fixture comprises a pressing body and a convex point structure provided on the pressing surface of the pressing body, wherein the convex point structure comprises a plurality of convex parts arranged at intervals, and the convex point structure is pressed into a surface of a side of the light-shielding material layer away from the cover plate to form a hole-shaped structure, thereby forming a light-shielding layer; Preferably, the hole-like structure comprises a plurality of openings arranged at intervals, and the minimum distance between adjacent openings is greater than or equal to 0.1 mm and less than or equal to 0.3 mm; Preferably, the minimum distance between adjacent openings is equal to 0.2 mm; Preferably, the light-shielding layer comprises an ink layer; Preferably, the opening is at least one of cylindrical and conical; Preferably, the diameter of the tapered opening is greater than or equal to 0.05 mm and less than or equal to 0.1 mm. Preferably, the depth of the opening is greater than or equal to 0.002 mm and less than or equal to 0.01 mm; Preferably, the depth of the opening is equal to 0.005 mm.

9. A laminating jig, used in the display panel laminating method according to any one of claims 6 to 8, characterized in that: The laminating jig comprises: A pressing body and a convex point structure arranged on the pressing surface of the pressing body, wherein the convex point structure comprises a plurality of convex parts arranged at intervals.

10. A display device, characterized in that: A display panel comprising any one of claims 1 to 5.

Images