Cover plate, display device, and method for manufacturing the cover plate

Abstract

This application discloses a cover plate, a display device, and a method for manufacturing the cover plate. The cover plate includes a display area and a non-display area. The cover plate also includes a cover plate body and a light-shielding layer. The cover plate body includes a first surface, a second surface, and a side surface connecting the first and second surfaces, all disposed opposite to each other. The first surface is a light-emitting surface, and a blocking structure is provided on the side surface. The light-shielding layer is at least disposed on the second surface of the cover plate body located in the non-display area. Through this method, this application can avoid the problem of light leakage at the edge of the cover plate, improving the user experience.

Description

Technical Field

[0001] This application relates to the field of display technology, and in particular to a cover plate, a display device, and a method for preparing the cover plate. Background Technology

[0002] With the development of modern technology, competition in the consumer electronics market is becoming increasingly fierce, and users have higher and higher requirements for electronic products. As a key material in electronic products, the cover plate's quality directly determines the market popularity of consumer electronics. The inventors of this application have discovered that existing cover plates still suffer from light leakage problems, affecting the user experience. Summary of the Invention

[0003] This application provides a cover plate, a display device, and a method for manufacturing the cover plate, which can avoid the problem of light leakage at the edge of the cover plate and improve the user experience.

[0004] To solve the above-mentioned technical problems, one technical solution adopted in this application is: to provide a cover plate, the cover plate including a display area and a non-display area, the cover plate further including: a cover plate body, the cover plate body including a first surface, a second surface and a side surface connected to the first surface and the second surface, wherein the first surface is a light-emitting surface and the side surface is provided with a blocking structure; a light-shielding layer, the light-shielding layer being at least disposed on the second surface of the cover plate body located in the non-display area.

[0005] The blocking structure is a groove provided on the side surface; preferably, the depth of the groove is in the range of 0 micrometers to 200 micrometers; preferably, the width of the groove is in the range of 4 micrometers to 10 micrometers, wherein the width direction of the groove is the same as the thickness direction of the cover plate body; preferably, the groove is provided around the side surface.

[0006] The blocking structure is a retaining wall disposed on the side; preferably, the height of the retaining wall is in the range of 0 micrometers to 200 micrometers; preferably, the width of the retaining wall is in the range of 4 micrometers to 10 micrometers, wherein the width direction of the retaining wall is the same as the thickness direction of the cover plate body; preferably, the retaining wall is disposed around the side; preferably, the retaining wall is integrally formed with the cover plate body.

[0007] Wherein, the ratio of the distance from the edge of the blocking structure near the second surface to the second surface to the thickness of the cover body is in the range of 1 / 4 to 1 / 2; preferably, the ratio of the distance from the edge of the blocking structure near the second surface to the second surface to the thickness of the cover body is 1 / 3.

[0008] The blocking structure is arranged around the cover plate body, or there are multiple blocking structures, which are spaced apart around the cover plate body.

[0009] Wherein, the connection between the side surface and the first surface and the connection between the side surface and the second surface are formed with a chamfered structure; preferably, the blocking structure divides the side surface into a first sub-side surface connected to the first surface and a second sub-side surface connected to the second surface, and the light-shielding layer further extends to the second sub-side surface; preferably, the material of the light-shielding layer includes ink.

[0010] To solve the above-mentioned technical problems, another technical solution adopted in this application is to provide a display device, including the cover plate in the above-mentioned technical solution.

[0011] To solve the above-mentioned technical problems, another technical solution adopted in this application is: to provide a method for preparing a cover plate, the method comprising: providing a cover plate body, forming a blocking structure on the side of the cover plate body; and forming a light-shielding layer at least on the surface of the cover plate body located in the non-display area.

[0012] The step of forming a light-shielding layer at least on the surface of the cover plate body located in the non-display area includes: printing a light-shielding material on a target area of ​​a screen printing plate, thereby transferring the light-shielding material to the surface of the cover plate body located in the non-display area, wherein the size of the target area is larger than the size of the non-display area.

[0013] The step of forming a blocking structure on the side of the cover plate body includes: forming a groove on the side using a brushing process; or forming the barrier on the side using a screen printing or pad printing process.

[0014] Unlike existing technologies, the advantages of this application are as follows: This application provides a blocking structure on the side of the cover plate, which ensures that the light-shielding material is fully formed on the second surface of the cover plate body located in the non-display area when the light-shielding layer is formed, without worrying about the light-shielding material overflowing onto the first surface of the cover plate body. This ensures that the light-shielding layer can completely and evenly cover the edge of the cover plate and will not exceed the position of the blocking structure on the side of the cover plate. On the one hand, it avoids the problem of light leakage caused by uneven coverage of the light-shielding layer at the edge of the cover plate, and on the other hand, it avoids the problem of the cover plate design being unsightly due to the entire side being covered with the light-shielding layer, thus improving the user experience. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0016] Figure 1 This is a structural schematic diagram of one embodiment of the cover plate of this application;

[0017] Figure 2 This is a top view schematic diagram of one embodiment of the cover plate of this application;

[0018] Figure 3 This is a schematic diagram of another embodiment of the cover plate of this application;

[0019] Figure 4 This is a structural schematic diagram of another embodiment of the cover plate of this application;

[0020] Figure 5 This is a front view schematic diagram of one embodiment of the cover plate of this application;

[0021] Figure 6 This is a front view of another embodiment of the cover plate of this application;

[0022] Figure 7 This is a structural schematic diagram of another embodiment of the cover plate of this application;

[0023] Figure 8 This is a flowchart illustrating one embodiment of the method for preparing the cover plate of this application. Detailed Implementation

[0024] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0025] Please refer to the following: Figure 1 and Figure 2 , Figure 1 This is a structural schematic diagram of one embodiment of the cover plate of this application. Figure 2This is a top view schematic diagram of one embodiment of the cover plate of this application. The cover plate 10 includes a display area AA and a non-display area NA. The cover plate 10 also includes a cover plate body 12 and a light-shielding layer 14. The cover plate body 12 includes a first surface 120 and a second surface 122 disposed opposite to each other, and a side surface 124 connecting the first surface 120 and the second surface 122. The first surface 120 is a light-emitting surface, and a blocking structure 16 is provided on the side surface 124. The light-shielding layer 14 is at least disposed on the second surface 122 of the cover plate body 12 located in the non-display area.

[0026] Specifically, the cover plate 10 includes a cover plate body 12 and a light-shielding layer 14. The cover plate body 12 is the main component of the cover plate 10, and its material can be glass. The light-shielding layer 14 is used to block peripheral wiring and other structures in the display panel. When the cover plate 10 is used in the display panel, the light emitted by the light-emitting layer in the display panel passes through the second surface 122 and the first surface 120 of the cover plate body 12 in sequence, that is, the first surface 120 is the light-emitting surface.

[0027] Furthermore, the blocking structure 16 is disposed on the side 124. During the formation of the light-shielding layer 14, when the light-shielding material overflows, the blocking structure 16 can prevent the light-shielding material from overflowing from the second surface 122 of the cover plate body 12 to the first surface 120.

[0028] Because of the blocking structure 16, this application can ensure that the light-shielding material is fully formed on the second surface 122 of the cover body 12 located in the non-display area NA when forming the light-shielding layer 14, without worrying about the light-shielding material overflowing onto the first surface 120 of the cover body 12. This ensures that the light-shielding layer 14 can completely and evenly cover the edge of the cover 10, and will not exceed the position of the blocking structure 16 on the side 124 of the cover 10. On the one hand, it avoids the problem of light leakage caused by uneven coverage of the light-shielding layer 14 at the edge of the cover 10, and on the other hand, it avoids the problem of the cover 10 being unsightly due to the entire side 124 being covered by the light-shielding layer 14, thus improving the user experience.

[0029] In one implementation, such as Figure 1 As shown, the blocking structure 16 is a groove provided on the side 124.

[0030] Specifically, when the light-shielding layer 14 is formed, the overflowing light-shielding material enters the side 124 of the cover plate 10. The edge of the light-shielding material on the side 124 is limited by the groove, which can prevent the light-shielding material from overflowing. This ensures that the light-shielding layer 14 can completely and evenly cover the edge of the cover plate 10 and will not exceed the position of the groove on the side 124 of the cover plate 10. This avoids the problem of light leakage caused by uneven coverage of the light-shielding layer 14 at the edge of the cover plate 10, and also avoids the problem of the cover plate 10 being unsightly due to the entire side 124 being covered by the light-shielding layer 14, thus improving the user experience.

[0031] In one embodiment, the depth of the groove ranges from 0 micrometers to 200 micrometers, for example, the depth of the groove is 50 micrometers, 100 micrometers or 150 micrometers, and the width of the groove ranges from 4 micrometers to 10 micrometers, for example, the width of the groove is 5 micrometers, 6 micrometers or 7 micrometers, etc. The width direction of the groove is the same as the thickness direction of the cover plate body 12, and the groove is arranged around the side 124. Of course, in other embodiments, the setting range of the depth and width of the groove is related to the actual design of the cover plate 10, and this application does not limit it.

[0032] In another implementation, please refer to Figure 3 , Figure 3 This is a schematic diagram of another embodiment of the cover plate of this application. In this embodiment, the blocking structure 16 is a retaining wall provided on the side 124.

[0033] Specifically, when the light-shielding layer 14 is formed, the overflowing light-shielding material enters the side 124 of the cover plate 10. The edge of the light-shielding material on the side 124 is limited by the baffle, which can prevent the light-shielding material from overflowing. This ensures that the light-shielding layer 14 can completely and evenly cover the edge of the cover plate 10 and will not exceed the position of the baffle on the side 124 of the cover plate 10. This avoids the problem of light leakage caused by uneven coverage of the light-shielding layer 14 at the edge of the cover plate 10, and also avoids the problem of the cover plate 10 being unsightly due to the entire side 124 being covered by the light-shielding layer 14, thus improving the user experience.

[0034] In one embodiment, the height of the retaining wall ranges from 0 micrometers to 200 micrometers, for example, the depth of the retaining wall is 50 micrometers, 100 micrometers, or 150 micrometers, and the width of the retaining wall ranges from 4 micrometers to 10 micrometers, for example, the width of the retaining wall is 5 micrometers, 6 micrometers, or 7 micrometers, etc., wherein the width direction of the retaining wall is the same as the thickness direction of the cover plate body 12, and the retaining wall is arranged around the side 124. Of course, in other embodiments, the setting range of the height and width of the retaining wall is related to the actual design of the cover plate 10, and this application does not limit it.

[0035] In yet another implementation, please refer to Figure 4, Figure 4 This is a schematic diagram of another embodiment of the cover plate of this application. In this embodiment, the blocking structure 16 includes both a groove and a retaining wall.

[0036] Specifically, in this embodiment, the blocking structure 16 is partly a groove structure and partly a retaining wall structure, for example, in an application scenario, such as... Figure 4 As shown, the groove is arranged around half of the side 124, and the retaining wall is arranged around the other half of the side 124. In other application scenarios, the groove and the retaining wall can also be arranged side by side in the thickness direction of the cover plate body 12. For example, the groove is arranged around the side 124, and the retaining wall is also arranged around the side 124.

[0037] In one embodiment, the barrier wall and the cover plate body 12 are integrally formed to make the structure between the cover plate 10 and the barrier wall more robust, thereby improving the stability and durability of the product. Alternatively, the barrier wall can be made of the same material as the light-shielding layer 14 to improve the manufacturing efficiency of the barrier wall. Of course, in other embodiments, the barrier wall and the cover plate body 12 can also be two independent structures connected together, or in other embodiments, the material of the barrier wall can be different from the material of the light-shielding layer 14.

[0038] In one application scenario, please refer to [further details]. Figure 1 The ratio of the distance L2 from the edge of the blocking structure 16 near the second surface 122 to the thickness L1 of the cover body 12 is in the range of 1 / 4 to 1 / 2. For example, the ratio between L2 and L1 is 3 / 10, 1 / 3 or 3 / 8, etc.

[0039] In one application scenario, the ratio of the distance L2 from the edge of the blocking structure 16 near the second surface 122 to the thickness L1 of the cover body 12 is 1 / 3. In other application scenarios, the range of the ratio L2 from the edge of the blocking structure 16 near the second surface 122 to the thickness L1 of the cover body 12 depends on the actual design of the cover 10, and this application does not limit it.

[0040] In one implementation, please refer to Figure 5 , Figure 5 This is a front view schematic diagram of one embodiment of the cover plate of this application. The blocking structure 16 is provided around the cover plate body 12. At this time, the blocking structure 16 can block the light-shielding material in all directions and prevent the light-shielding material from overflowing.

[0041] For other implementations, please refer to Figure 6 , Figure 6This is a front view schematic diagram of another embodiment of the cover plate of this application. There are multiple blocking structures 16, and these multiple blocking structures 16 are spaced apart around the cover plate body 12. In this case, the multiple spaced blocking structures 16 can also block the light-shielding material in all directions, preventing the light-shielding material from overflowing.

[0042] In one implementation, please refer to Figure 7 , Figure 7 This is a schematic diagram of another embodiment of the cover plate of this application. Chamfered structures 18 are formed at the junctions of the side surface 124 and the first surface 120, and at the junctions of the side surface 124 and the second surface 122 of the cover plate 10. Specifically, to prevent chipping of the cover plate 10, chamfered structures 18 are provided at the junctions of the side surface 124 and the first surface 120, and at the junctions of the side surface 124 and the second surface 122 of the cover plate 10. Of course, in other embodiments, the chamfered structure 18 may not exist between the side surface 124 and the first surface 120 of the cover plate 10, in which case they can be connected perpendicularly.

[0043] In one embodiment, please refer to the following: Figure 5 and Figure 7 The blocking structure 16 divides the side 124 into a first sub-side 1240 connected to the first surface 120 and a second sub-side 1242 connected to the second surface 122, and the light-shielding layer 14 extends further to the second sub-side 1242.

[0044] Specifically, after covering the edge of the second surface 122, the light-shielding layer 14 extends further to the second sub-side surface 1242 to further avoid light leakage due to uneven coverage of the light-shielding layer 14 at the second sub-side surface 1242.

[0045] In one embodiment, the chamfer structure 18 can be a rounded corner or an edge, and this application does not limit it in this way.

[0046] In one embodiment, the material of the light-shielding layer 14 includes ink. When the material of the light-shielding layer 14 includes ink, the material of the blocking structure 16, which acts as a barrier, can also be ink.

[0047] This application also provides a display device, which includes the cover plate 10 of any of the above embodiments.

[0048] Since the display device provided by the present invention includes the cover plate 10 of the above-mentioned technical solution, the display device provided by the present invention has all the beneficial effects of the cover plate 10, which will not be elaborated here.

[0049] The cover plate 10 provided above will be further explained below from the perspective of its preparation method. Please refer to the following: Figure 1 , Figure 2 and Figure 8, Figure 8 This is a flowchart illustrating one embodiment of the method for preparing the cover plate of this application. The preparation method includes:

[0050] S101: Provide a cover plate body 12.

[0051] Specifically, this application embodiment provides a cover plate body 12, which may be made of glass. The cover plate body 12 includes a first surface 120, a second surface 122 and a side surface 124 connecting the first surface 120 and the second surface 122, wherein the first surface 120 is a light-emitting surface.

[0052] S102: A blocking structure is formed on the side of the cover plate body 12.

[0053] Specifically, a blocking structure 16 is formed on the side 124 of the cover plate body 12.

[0054] In one embodiment, the blocking structure 16 is disposed around the cover plate body 12, in which case the blocking structure 16 can block the light-shielding material in all directions to prevent the light-shielding material from overflowing.

[0055] In other embodiments, there are multiple blocking structures 16, and these multiple blocking structures 16 are spaced apart around the cover plate body 12. In this case, the multiple spaced blocking structures 16 can also block the light-shielding material in all directions, preventing the light-shielding material from overflowing.

[0056] In one embodiment, the ratio of the distance L2 from the edge of the blocking structure 16 near the second surface 122 to the thickness L1 of the cover body 12 ranges from 1 / 4 to 1 / 2. For example, the ratio of L2 to L1 is 3 / 10, 1 / 3, or 3 / 8, etc. In one application scenario, the ratio of the distance L2 from the edge of the blocking structure 16 near the second surface 122 to the thickness L1 of the cover body 12 is 1 / 3. In other application scenarios, the range of the ratio of the distance L2 from the edge of the blocking structure 16 near the second surface 122 to the thickness L1 of the cover body 12 is related to the actual design of the cover 10, and this application does not limit it.

[0057] In one application scenario, the blocking structure 16 is a groove provided on the side 124, and step S102 specifically includes: forming a groove on the side 124 by a brushing process.

[0058] Specifically, grinding is a surface treatment technique used to improve the smoothness and flatness of material surfaces. It is commonly used in the machining and surface treatment of metal products. In grinding, abrasives and grinding tools are used to grind and polish the material surface to remove surface defects such as unevenness, oxide layers, and scratches, thereby obtaining a smoother and brighter surface. Grinding can improve the appearance quality, mechanical properties, and corrosion resistance of materials.

[0059] In one embodiment, the depth of the groove ranges from 0 micrometers to 200 micrometers, for example, the depth of the groove is 50 micrometers, 100 micrometers or 150 micrometers, etc., and the width of the groove ranges from 4 micrometers to 10 micrometers, for example, the width of the groove is 5 micrometers, 6 micrometers or 7 micrometers, etc., wherein the width direction of the groove is the same as the thickness direction of the cover plate body 12, and the groove is arranged around the side 124. Of course, in other application scenarios, the setting range of the depth and width of the groove is related to the actual design of the cover plate 10, and this application does not limit it.

[0060] In another application scenario, the blocking structure 16 is a barrier wall set on the side 124. Step S102 specifically includes: forming a barrier wall on the side 124 using screen printing or pad printing processes.

[0061] Specifically, screen printing is a printing method that uses a screen. Its principle is to apply ink or pigment to the screen, and then transfer the ink through the mesh of the screen onto the printing material. The shape of the mesh corresponds to the desired printing pattern. Screen printing can be applied to various materials, such as paper, fabric, plastic, and metal. It features vibrant colors, clear patterns, and good durability, and is commonly used in the production of signs, advertisements, posters, and clothing.

[0062] Pad printing is a printing method that uses silicone pads. Its principle involves applying ink or pigment to the silicone pad and then transferring the ink onto the printing material through pressure. Silicone pads have good elasticity and adhesion, allowing them to adapt to printing on irregular surfaces. Pad printing is suitable for various materials, such as plastics, metals, and ceramics. It features high printing precision, suitability for curved surfaces, and fast printing speed, and is commonly used for printing on electronic products, toys, tableware, and more.

[0063] In one embodiment, the height of the retaining wall ranges from 0 micrometers to 200 micrometers, for example, the height of the retaining wall is 50 micrometers, 100 micrometers, or 150 micrometers, etc., and the width of the retaining wall ranges from 4 micrometers to 10 micrometers, for example, the width of the retaining wall is 5 micrometers, 6 micrometers, or 7 micrometers, etc., wherein the width direction of the retaining wall is the same as the thickness direction of the cover plate body 12, and the retaining wall is arranged around the side 124. Of course, in other application scenarios, the setting range of the height and width of the retaining wall is related to the actual design of the cover plate 10, and this application does not limit it.

[0064] S103: A light-shielding layer 14 is formed on at least the surface of the cover plate body 12 located in the non-display area NA.

[0065] Specifically, at least one light-shielding layer 14 is formed on at least the second surface 122 of the cover plate body 12 located in the non-display area NA. In one embodiment, the material of the light-shielding layer 14 includes ink. When the material of the light-shielding layer 14 includes ink, the material of the blocking structure 16 as a barrier can also be ink.

[0066] In one application scenario, step S103 specifically includes: printing light-shielding material on the target area of ​​the screen printing plate, thereby transferring the light-shielding material to the second surface 122 of the cover plate body 12 located in the non-display area NA, wherein the size of the target area is larger than the size of the non-display area NA.

[0067] Specifically, the light-shielding material is printed on the target area of ​​the screen printing plate. The size of the target area is larger than the size of the non-display area. So when the light-shielding material is transferred to the second surface 122 of the cover plate body 12 located in the non-display area NA using the screen printing process, the edge of the cover plate 10 can be covered with light-shielding material to prevent light leakage. Furthermore, due to the setting of the blocking structure 16, it is ensured that the light-shielding layer 14 can completely and evenly cover the edge of the second surface 122 and will not exceed the position of the blocking structure 16 on the side 124 of the cover plate 10. This avoids the problem of light leakage caused by uneven coverage of the light-shielding layer 14 at the edge of the cover plate 10, and also avoids the problem of the cover plate 10 being unsightly due to the entire side 124 being covered with the light-shielding layer 14, thus improving the user experience.

[0068] It should be noted that, in the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0069] Furthermore, the technical solutions of the various embodiments can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0070] The above description is merely an embodiment of this application and does not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A cover plate, characterized in that, The cover plate includes a display area and a non-display area, and also includes: The cover plate body includes a first surface, a second surface and a side surface connected to the first surface and the second surface, wherein the first surface is a light-emitting surface and the side surface is provided with a blocking structure. A light-shielding layer is provided at least on the second surface of the cover plate body located in the non-display area; The ratio of the distance from the edge of the blocking structure near the second surface to the second surface to the thickness of the cover plate body is in the range of 1 / 4 to 1 / 2.

2. The cover plate according to claim 1, characterized in that, The blocking structure is a groove provided on the side.

3. The cover plate according to claim 2, characterized in that, The depth of the groove ranges from 0 micrometers to 200 micrometers.

4. The cover plate according to claim 2, characterized in that, The width of the groove ranges from 4 micrometers to 10 micrometers, wherein the width direction of the groove is the same as the thickness direction of the cover plate body.

5. The cover plate according to claim 2, characterized in that, The groove is provided around the side surface.

6. The cover plate according to claim 1, characterized in that, The blocking structure is a retaining wall installed on the side.

7. The cover plate according to claim 6, characterized in that, The height of the retaining wall ranges from 0 micrometers to 200 micrometers.

8. The cover plate according to claim 6, characterized in that, The width of the retaining wall ranges from 4 micrometers to 10 micrometers, wherein the width direction of the retaining wall is the same as the thickness direction of the cover plate body.

9. The cover plate according to claim 6, characterized in that, The retaining wall is arranged around the side.

10. The cover plate according to claim 6, characterized in that, The retaining wall and the cover plate body are integrally formed.

11. The cover plate according to claim 1, characterized in that, The ratio of the distance from the edge of the blocking structure near the second surface to the second surface to the thickness of the cover plate body is 1 / 3.

12. The cover plate according to claim 1, characterized in that, The blocking structure is arranged around the cover plate body, or there are multiple blocking structures, and the multiple blocking structures are arranged at intervals around the cover plate body.

13. The cover plate according to claim 1, characterized in that, The connection between the side surface and the first surface, and the connection between the side surface and the second surface, are formed with chamfered structures.

14. The cover plate according to claim 1, characterized in that, The blocking structure divides the side into a first sub-side connected to the first surface and a second sub-side connected to the second surface, and the light-shielding layer further extends to the second sub-side.

15. The cover plate according to claim 1, characterized in that, The material of the light-shielding layer includes ink.

16. A display device, characterized in that, Includes the cover plate as described in any one of claims 1 to 15.

17. A method for preparing a cover plate, characterized in that, Applied to a cover plate as described in any one of claims 1 to 15, the method comprises: Provide a cover plate body; A blocking structure is formed on the side of the cover plate body; A light-shielding layer is formed at least on the surface of the cover body located in the non-display area.

18. The method according to claim 17, characterized in that, The step of forming a light-shielding layer at least on the surface of the cover plate body located in the non-display area includes: Light-shielding material is printed on a target area of ​​a screen printing plate, thereby transferring the light-shielding material to the surface of the cover body located in the non-display area, wherein the size of the target area is larger than the size of the non-display area.

19. The method according to claim 17, characterized in that, The step of forming a blocking structure on the side of the cover plate body includes: A groove is formed on the side surface using a brushing and polishing process; or, A retaining wall is formed on the side using screen printing or pad printing processes.

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