Display module, display device and processing method of display module

Abstract

The application relates to a display module, a display device and a processing method of the display module. The display module has a hole area, a window area and a frame area. The display module comprises: a first layer group; a light shielding layer arranged on one side of the first layer group in the thickness direction of the display module, wherein the light shielding layer comprises a first light shielding part and a second light shielding part, the first light shielding part is arranged around the window area in the frame area, and the second light shielding part is arranged close to and around the hole area; a second layer group arranged on the side of the adhesive layer away from the first layer group; a thinning area is arranged on the side edge of the first light shielding part close to the window area and the side edge of the second light shielding part close to the window area; in the direction from the frame area to the window area, the thickness of the thinning area of the first light shielding part presents a decreasing trend; and in the direction from the hole area to the window area, the thickness of the thinning area of the second light shielding part presents a decreasing trend. The display module provided by the application can improve the display effect and reduce the thickness.

Description

Technical Field

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

[0002] In existing display panels, a cover glass and a screen body are typically included, bonded together with adhesive. A light-shielding layer is usually located on the side of the cover glass facing the screen body to shield areas such as the edges of the aperture area and the viewing window area, which are prone to affecting display quality and require shading from the light-emitting side. Because the light-shielding layer is not a single continuous layer, the adhesive needs to fill the sides of the light-shielding layer during the bonding process to ensure adhesion. During this process, due to the thinness and low filling capacity of the adhesive layer, air bubbles can easily remain on the sides of the light-shielding layer, leading to decreased bonding reliability and display problems such as abnormal bright spots.

[0003] Therefore, there is an urgent need for a display module that can improve the bonding effect and reduce the required adhesive layer thickness, as well as a corresponding display device and a processing method for the display module. Summary of the Invention

[0004] This application provides a display module, a display device, and a method for processing the display module, which can improve the display effect and reduce the module thickness.

[0005] In a first aspect, according to an embodiment of this application, a display module is provided, having an aperture area, a window area surrounding the aperture area, and a border area surrounding the window area. The display module includes: a first layer group; a light-shielding layer disposed on one side of the first layer group in the thickness direction of the display module, the light-shielding layer including a first light-shielding part and a second light-shielding part, the first light-shielding part being located in the border area and surrounding the window area, and the second light-shielding part being disposed near and surrounding the aperture area; an adhesive layer disposed on the side of the first layer group facing the light-shielding layer, the light-shielding layer being sandwiched between the adhesive layer and the first layer group; and a second layer group disposed on the side of the adhesive layer away from the first layer group, and bonded to the first layer group through the adhesive layer; wherein, the edge of the first light-shielding part near the window area and the edge of the second light-shielding part near the window area are respectively provided with thinning areas, the thickness of the thinning area of ​​the first light-shielding part decreasing along the direction from the border area to the window area, and the thickness of the thinning area of ​​the second light-shielding part decreasing along the direction from the aperture area to the window area.

[0006] According to one aspect of the embodiments of this application, the light-shielding layer has a first surface and a second surface disposed opposite to each other in the thickness direction, the first surface abutting against a first layer group; the second surface is at least partially inclined toward the direction of the first surface, or the thinning area of ​​the first light-shielding portion and the thinning area of ​​the second light-shielding portion each include a plurality of sub-parts, the second surface and the first surface of each sub-part are parallel to each other, the thickness of at least some sub-parts of the first light-shielding portion decreases sequentially along the direction from the border area to the window area, and the thickness of at least some sub-parts of the second light-shielding portion decreases sequentially along the direction from the hole area to the window area.

[0007] According to one aspect of the embodiments of this application, the second surface is at least partially inclined toward the direction of the first surface, and the angle between the plane of the second surface and the plane of the first surface is 20° to 40°.

[0008] According to one aspect of the embodiments of this application, the maximum thickness of the light-shielding layer is greater than 10 μm, and the maximum thickness of the adhesive layer is less than or equal to 0.1 mm.

[0009] According to one aspect of the embodiments of this application, the thickness of the light-shielding layer in the thinning region is 4μm to 15μm.

[0010] According to one aspect of the embodiments of this application, in the width direction perpendicular to its own extension direction, the width dimension of the thinning area in the first light-shielding part and the width dimension in the second light-shielding part are both 0.15mm to 0.2mm.

[0011] According to one aspect of the embodiments of this application, the thickness of the adhesive layer is H1, and the width of the thinning region is √3H1.

[0012] According to one aspect of the embodiments of this application, the first layer group includes a cover plate, and the second layer group includes a screen body and a polarizer stacked together.

[0013] Secondly, according to embodiments of this application, a display device is provided, including the display module in any embodiment of the first aspect.

[0014] Thirdly, according to an embodiment of this application, a method for processing a display module is proposed, comprising: providing a second layer assembly; coating one side surface of the second layer assembly with an adhesive material; providing a first layer assembly, the first layer assembly having a hole area, a window area surrounding the hole area, and a frame area surrounding the window area; forming a light-shielding layer on the first layer assembly, such that the light-shielding layer includes a first light-shielding portion and a second light-shielding portion, the first light-shielding portion being located in the frame area and surrounding the window area, the second light-shielding portion being located near and surrounding the hole area, and thinning areas being respectively provided on the side edge of the first light-shielding portion near the window area and the side edge of the second light-shielding portion near the window area, the thickness of the thinning area of ​​the first light-shielding portion decreasing along the direction from the frame area to the window area, and the thickness of the thinning area of ​​the second light-shielding portion decreasing along the direction from the hole area to the window area; and bonding the side of the first layer assembly with the light-shielding layer to the side of the second layer assembly with the adhesive material to form an adhesive layer and bond the first layer assembly and the second layer assembly together.

[0015] According to one aspect of the embodiments of this application, the step of forming a light-shielding layer on a first layer group includes: providing a screen printing plate, forming the light-shielding layer by screen printing, such that the screen printing plate has a first region and a second region disposed along the thickness direction of the first layer group corresponding to the thinning region, such that the screen mesh count in the second region is greater than the screen mesh count in the first region; or, the step of forming a light-shielding layer on a first layer group includes: forming a light-shielding substrate layer on the first layer group; etching the light-shielding substrate layer such that the etching rate of the thinning region is greater than the etching rate in other regions offset from the thinning region.

[0016] The display module provided in this application includes a first layer group, a light-shielding layer, an adhesive layer, and a second layer group stacked sequentially. The display module includes a hole area, a window area surrounding the hole area, and a border area surrounding the window area. The light-shielding layer includes a first light-shielding portion disposed near the junction of the window area and the border area, and a second light-shielding portion disposed near the junction of the hole area and the window area. Both light-shielding portions have thinning areas at their edges, creating a gradually decreasing thickness structure. This allows the adhesive to gradually adhere to the light-shielding layer along the thickness change direction, facilitating gas expulsion, reducing the possibility of bubble formation, and lowering the requirements for adhesive layer filling performance. This allows the display module to use a thinner adhesive layer, reducing the overall module thickness. Attached Figure Description

[0017] The features, advantages, and technical effects of exemplary embodiments of this application will now be described with reference to the accompanying drawings.

[0018] Figure 1 This is a schematic diagram of the structure of a display module provided in one embodiment of this application;

[0019] Figure 2 yes Figure 1 A schematic diagram of the cross-sectional structure at point A-A' is shown.

[0020] Figure 3 yes Figure 2 An enlarged view of region P shown;

[0021] Figure 4 yes Figure 2 Another magnified view of region P shown;

[0022] Figure 5 This is a schematic diagram of the structure of a display device provided in one embodiment of this application;

[0023] Figure 6 This is a flowchart of a processing method for a display module provided in one embodiment of this application.

[0024] in:

[0025] 100 - Display module; 200 - Display device;

[0026] 101 - Hole area; 102 - Viewport area; 103 - Border area;

[0027] 10 - First layer; 20 - Light-shielding layer; 30 - Adhesive layer; 40 - Second layer;

[0028] 11-Cover plate; 21-First light-shielding part; 22-Second light-shielding part; 23-Thinning area; 24-First surface; 25-Second surface; 26-Sub-part; 41-Screen body; 42-Polarizer;

[0029] X - Thickness direction. Detailed Implementation

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

[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes said element.

[0032] It should be understood that when describing the structure of a component, when referring to a layer or region as being "above" or "on top of" another layer or region, it can mean that it is directly above the other layer or region, or that it contains other layers or regions between it and the other layer or region. Furthermore, if the component is flipped over, that layer or region will be located "below" or "under" the other layer or region.

[0033] The features and exemplary embodiments of various aspects of this application will now be described in detail. Furthermore, the features, structures, or characteristics described below may be combined in any suitable manner in one or more embodiments.

[0034] In existing display devices, there is usually a screen body for displaying the display function and a protective layer such as a cover glass for protecting and supporting the screen body. The two are usually bonded together. At the same time, a light-shielding layer is usually provided on the side of the protective layer facing the screen body. The light-shielding layer is usually supported by black ink and is used to block the edges of the holes below or components that may affect the display effect.

[0035] Furthermore, existing display modules are generally designed to be thinner and lighter to further improve the user experience. However, to achieve this while meeting bonding process requirements, the adhesive bonded to the side containing the light-shielding layer needs to have a certain step-filling capacity. The step-filling capacity of the adhesive is approximately 10% of its own thickness. For example, if the adhesive layer is 0.25mm thick, its step-filling capacity for the light-shielding layer is approximately 25μm. This means that when the thickness of the light-shielding layer is less than or equal to 25μm, the adhesive layer can usually effectively accommodate the step differences caused by the light-shielding layer without causing bonding problems such as air bubbles.

[0036] Based on this, the applicant discovered that because the light-shielding layer is not a single, continuous layer and is typically located on the side facing the adhesive layer, the adhesive material needs to partially fill the sides of the light-shielding layer during bonding. This easily leads to air bubbles forming on the sides, making it difficult for the air to escape. Consequently, abnormal bright spots appear at the bubble locations during display, and this also negatively impacts the reliability of the bonding. Furthermore, because this bonding method places high demands on the filling capacity of the adhesive material in the bonding layer, the bonding layer needs to have a certain thickness, making it difficult to reduce the overall thickness of the display module.

[0037] To address the aforementioned issues, this application proposes a display module in which the light-shielding layer has a thinning zone with gradually decreasing thickness at the edges, allowing it to gradually adhere to the adhesive material. This facilitates gas expulsion, reduces the formation of air bubbles, and enables the use of a thinner adhesive layer, thereby lowering the overall thickness of the display module.

[0038] It is understood that the following embodiments of this application are only used as an example of applying a light-shielding layer with a gradually varying thickness to a display module. However, this application is not limited to this. This structural form can also be applied to other occasions where it is necessary to bond with an uneven light-shielding layer and provide protection for it.

[0039] To better understand this application, the following will be combined with... Figures 1 to 6 The present application provides a detailed description of the display module, display device, and processing method of the display module provided in the embodiments.

[0040] Please refer to the following: Figures 1 to 3 , Figure 1 This is a schematic diagram of the structure of a display module provided in one embodiment of this application. Figure 2 yes Figure 1 A schematic diagram of the cross-sectional structure at point A-A'. Figure 3 yes Figure 2 An enlarged view of region P shown.

[0041] In a first aspect, according to an embodiment of this application, a display module 100 is provided, having an aperture area 101, a window area 102 surrounding the aperture area 101, and a border area 103 surrounding the window area 102. The display module 100 includes: a first layer group 10; a light-shielding layer 20 disposed on one side of the first layer group 10 in the thickness direction X of the display module 100, the light-shielding layer 20 including a first light-shielding part 21 and a second light-shielding part 22, the first light-shielding part 21 being located in the border area 103 and surrounding the window area 102, and the second light-shielding part 22 being close to and surrounding the aperture area 101; and an adhesive layer 30 disposed on the first layer group 10 facing the light-shielding layer. On one side of 20, the light-shielding layer 20 is sandwiched between the adhesive layer 30 and the first layer group 10; the second layer group 40 is disposed on the side of the adhesive layer 30 away from the first layer group 10, and is bonded to the first layer group 10 through the adhesive layer 30; wherein, the first light-shielding part 21 and the second light-shielding part 22 are respectively provided with a thinning area 23 on the side edge near the window area 102, and the thickness of the thinning area 23 of the first light-shielding part 21 decreases along the direction from the frame area 103 to the window area 102, and the thickness of the thinning area 23 of the second light-shielding part 22 decreases along the direction from the hole area 101 to the window area 102.

[0042] This application first provides a display module 100, including a first layer group 10, a light-shielding layer 20, an adhesive layer 30 and a second layer group 40 stacked sequentially along its own thickness direction X. The first layer group 10 and the second layer group 40 are two sets of film layer structures to be connected by adhesive bonding. The first layer group 10 and the second layer group 40 may each include one or more film layers. For example, one of them may include a film layer for realizing the display function, and the other may include a film layer for providing support or protection functions.

[0043] The display module 100 has a hole area 101, a window area 102 surrounding the hole area 101, and a border area 103 surrounding the window area 102. The first layer group 10 and / or the second layer group 40 located in the hole area 101 may be provided with a through hole along the thickness direction X. The through hole can be used to set an image acquisition component or a photosensitive component, etc. The window area 102 is set around the hole area 101 and may include a display area and be used to realize the display function. The border area 103 is set at the edge of the entire display module 100 and surrounds the window area 102. The border area 103 can be used to set other structures for connection with the housing, etc.

[0044] Based on this, a light-shielding layer 20 is provided on the side of the first layer group 10 facing the second layer group 40. The light-shielding layer 20 includes at least two light-shielding parts, namely a first light-shielding part 21 provided in the frame area 103 and surrounding the window area 102 for blocking the structural members below the frame area 103, and a second light-shielding part 22 provided in the window area 102 and surrounding the hole area 101 for blocking the edge of the aforementioned through hole. The first light-shielding part 21 and the second light-shielding part 22 can both be annular and randomly arranged with respect to the surrounding area.

[0045] For example, the first light-shielding part 21 may be in the shape of a rectangular ring, and its orthogonal projection along the thickness direction X of the display module 100 may cover the frame area 103. The second light-shielding part 22 may be in the shape of a circular ring, and may be connected to or partially extend into the hole area 101. The area of ​​the second light-shielding part 22 may be smaller than the area of ​​the first light-shielding part 21.

[0046] Furthermore, the display module 100 also includes an adhesive layer 30, which is used to bond the first layer group 10 and the second layer group 40 together. The first light-shielding part 21 and the second light-shielding part 22 in the light-shielding layer 20 are spaced apart. Thus, the adhesive layer 30 is partially disposed in the same layer as the light-shielding layer 20, that is, it fills the space between the first light-shielding part 21 and the second light-shielding part 22 and is in contact with at least a portion of the side surfaces of the two light-shielding parts.

[0047] Specifically, the side surface of the first light-shielding portion 21 near the viewing window area 102 and the side surface of the second light-shielding portion 22 near the viewing window area 102 are both in contact with the adhesive layer 30. During bonding, the adhesive in the adhesive layer 30 covers the surface of the light-shielding layer 20 facing the second layer group 40 and gradually fills the side of the light-shielding layer 20. During this filling process, the structure of the thinning area 23 allows the adhesive to gradually contact the side surface, avoiding the problem that the adhesive on the side away from the first layer group 10 contacts the light-shielding layer 20 first, which would prevent the bottom gas from escaping, thereby reducing the possibility of air bubbles.

[0048] Based on this, the edge regions of the first light-shielding portion 21 near the viewing window area 102 and the edge regions of the second light-shielding portion 22 near the viewing window area 102 are both configured as thinning regions 23. The width of the thinning region 23 can be a portion of the width of the light-shielding portion, or, in embodiments where the width of the light-shielding portion is small, the entire light-shielding portion can be configured as thinning regions 23. In the thinning region 23, the thickness of the light-shielding layer 20 decreases along a predetermined direction.

[0049] Specifically, the thickness of the thinning area 23 of the first light-shielding part 21 decreases along the direction from the border area 103 to the window area 102, and the thickness of the thinning area 23 of the second light-shielding part 22 decreases along the direction from the hole area 101 to the window area 102. That is, the thickness of the two light-shielding parts gradually decreases along the direction towards their own edges, forming an edge with a gradual change in thickness.

[0050] Therefore, through the thinning region 23, the adhesive material in the adhesive layer 30 can gradually contact and fill the light-shielding layer 20 along the thickness gradient direction when it comes into contact with it, thereby gradually expelling gas, reducing the possibility of air bubbles forming on the side of the light-shielding layer 20, and improving bonding reliability. At the same time, due to the existence of the thickness gradient region, the requirements for the step filling capacity of the adhesive layer 30 can be reduced, so that the display module 100 can use a thinner adhesive layer 30 for bonding, thereby reducing the overall thickness of the display module 100.

[0051] Please see Figure 4 , Figure 4 yes Figure 2 Another magnified view of region P shown.

[0052] In some optional embodiments, the light-shielding layer 20 has a first surface 24 and a second surface 25 disposed opposite to each other in the thickness direction X, the first surface 24 abutting against the first layer group 10; the second surface 25 is at least partially inclined toward the first surface 24, or the thinning area 23 of the first light-shielding portion 21 and the thinning area 23 of the second light-shielding portion 22 each include a plurality of sub-parts 26, the second surface 25 and the first surface 24 of each sub-part 26 are parallel to each other, the thickness of at least a portion of the sub-parts 26 of the first light-shielding portion 21 decreases sequentially along the direction from the border area 103 to the window area 102, and the thickness of at least a portion of the sub-parts 26 of the second light-shielding portion 22 decreases sequentially along the direction from the hole area 101 to the window area 102.

[0053] Optionally, the light-shielding layer 20 may have a first surface 24 and a second surface 25 disposed opposite to each other along the thickness direction X, wherein the first surface 24 faces and abuts the first layer group 10, and the second surface 25 faces the second layer group 40. Furthermore, the second surface 25 may extend along a plane or an arc surface, and the second surface 25 in the first light-shielding portion 21 is inclined towards the side closer to the first surface 24 along the direction from the border area 103 to the viewing window area 102, and the second surface 25 in the second light-shielding portion 22 is inclined towards the side closer to the first surface 24 along the direction from the hole area 101 to the viewing window area 102, thereby forming the aforementioned gradually thinning region 23. In this embodiment, the second surface 25 may be optionally extended along a plane, in which case the thickness of the light-shielding layer 20 decreases uniformly.

[0054] Alternatively, based on having a first surface 24 and a second surface 25, the thinning region 23 can be divided into multiple sub-sections 26, with the second surface 25 of each sub-section 26 being parallel to the first surface 24. In this case, the thickness of the light-shielding layer 20 in the thinning region 23 decreases in a stepwise manner.

[0055] It is understandable that, taking the first light-shielding portion 21 as an example, in embodiments where the thinning region 23 includes multiple sub-portions 26, the thickness of each sub-portion 26 can gradually decrease sequentially along the direction from the border region 103 to the viewing window region 102, and can be selected as an arithmetic progression. Alternatively, there may be a possibility that the thickness of some sub-portions 26 is greater than the thickness of other sub-portions 26 closer to the border region 103, as long as the thickness of the multiple sub-portions 26 generally decreases along the direction from the border region 103 to the viewing window region 102.

[0056] By making the second surface 25 of the thinning region 23 an inclined plane or a surface divided into multiple sub-parts 26, the thickness of the light-shielding layer 20 can be reduced uniformly or in a stepped manner, making the light-shielding layer 20 easier to process and forming a thinning region 23 with a relatively uniform thickness variation.

[0057] In some alternative embodiments, the second surface 25 is at least partially inclined toward the first surface 24, and the angle between the plane containing the second surface 25 and the plane containing the first surface 24 is 20° to 40°.

[0058] Optionally, in embodiments where the second surface 25 is inclined toward the first surface 24, the angle between the plane of the inclined surface and the plane of the first surface 24 can be selected as 20° to 40°, for example, any one of 20°, 25°, 30°, 35° and 40° or between any two of them. More preferably, it can be an angle of approximately 30°.

[0059] By setting the second surface 25 within the tilt angle range, the light-shielding layer 20 can be easily processed, and its thickness variation can be adapted to the filling of the adhesive layer 30. The gentler tilt slope facilitates the discharge of gas and can further reduce the possibility of bubble formation.

[0060] In some optional embodiments, the maximum thickness of the light-shielding layer 20 is greater than 10 μm, and the maximum thickness of the adhesive layer 30 is less than or equal to 0.1 mm.

[0061] Optionally, the maximum thickness of the light-shielding layer 20 in the display module 100 can be greater than 10 μm, and more preferably greater than or equal to 15 μm. By giving the light-shielding layer 20 a certain thickness, the light-shielding layer 20 can have good and reliable light-shielding performance.

[0062] Meanwhile, the maximum thickness of the adhesive layer 30 can be less than or equal to 0.1 mm, and this maximum thickness can be located, for example, offset from the first light-shielding portion 21 and the second light-shielding portion 22. Since the light-shielding layer 20 in the display module 100 has a thinning region 23, the thickness of the adhesive layer 30 can be reduced. Keeping the thickness of the adhesive layer 30 within the aforementioned range allows for a further reduction in the overall thickness of the display module 100 while maintaining good adhesive performance.

[0063] In some optional embodiments, the thickness of the light-shielding layer 20 in the thinning region 23 is 4 μm to 15 μm.

[0064] Optionally, in the thinning region 23, the thickness of the light-shielding layer 20 can be in the range of 4μm to 15μm. Optionally, this range can be set as a gradual range of thickness, that is, the thickness of the light-shielding layer 20 in the first light-shielding part 21 and the second light-shielding part 22 can be gradually thinned from about 15μm to about 4μm in the direction tending towards the edge.

[0065] By setting the thickness of the light-shielding layer 20 within the aforementioned range, the thickness of the light-shielding layer 20 in the thinning region 23 can be varied within a suitable range, thereby reducing the possibility of bubble formation while maintaining good light-shielding reliability.

[0066] In some optional embodiments, the width dimension of the thinning region 23 in the first light-shielding part 21 and the width dimension of the second light-shielding part 22 are both 0.15mm to 0.2mm in the width direction perpendicular to its own extension direction.

[0067] As mentioned above, in this embodiment, the first light-shielding part 21 is arranged around the window area 102, and the second light-shielding part 22 is arranged around the hole area 101. The annular extension trajectory of the second light-shielding part 22 is set as its extension direction. Then, the thinning area 23 can have a preset width dimension in the width direction perpendicular to its own extension direction. The width dimensions of the thinning area 23 in the first light-shielding part 21 can be the same or similar, and the width dimensions of the thinning area 23 in the second light-shielding part 22 can be the same or similar.

[0068] Furthermore, the width of the thinning region 23 in both the first light-shielding portion 21 and the second light-shielding portion 22 can be 0.15mm to 0.2mm, for example, it can be any one of 0.15mm, 0.17mm, 0.19mm, or 0.2mm, or somewhere in between. By setting the width within the aforementioned range, a sufficient buffer and gradient area can be maintained while ensuring the reliability of light shielding, thereby reducing the possibility of bubble formation.

[0069] In some optional embodiments, the thickness of the adhesive layer 30 is H1, and the width of the thinning region 23 is √3H1.

[0070] Based on the fact that the width of the thinning region 23 conforms to the aforementioned numerical range, the width of the thinning region 23 can be specifically selected according to the thickness of the adhesive layer 30. Specifically, if the maximum thickness of the adhesive layer 30 is denoted as H1, then the width of the thinning region 23 can be selected as √3H1. Through the aforementioned numerical relationship, the thickness of the adhesive layer 30 can be matched with the width of the thinning region 23, reducing air bubbles while ensuring that both the adhesive layer 30 and the display module 100 as a whole have a relatively thin thickness.

[0071] Optionally, in embodiments where the second surface 25 of the thinning region 23 is inclined, the numerical relationship between the thickness of the adhesive layer 30 and the width of the thinning region 23 can be calculated based on the specific inclination angle of the inclined second surface 25. For example, when the inclination angle is 30°, the two can satisfy the aforementioned numerical relationship. In embodiments where the thinning region 23 includes multiple sub-parts 26, the width of the thinning region 23 can be adjusted by adjusting the number and width of the sub-parts 26, and the relationship between the width and the thickness of the adhesive layer 30 can satisfy the aforementioned numerical range.

[0072] In some alternative embodiments, the first layer group 10 includes a cover plate 11, and the second layer group 40 includes a screen body 41 and a polarizer 42 stacked together.

[0073] Optionally, the first layer 10 can be a cover plate 11, which provides protection for structural components such as the screen 41 and facilitates the formation of a light-shielding layer 20 thereon. The second layer 40 may include the screen 41 and a polarizer 42, wherein the polarizer 42 is used to reduce ambient light reflection, and the screen 41 is used to realize the display function. Thus, the display module 100 may include a cover plate 11, a light-shielding layer 20, an adhesive layer 30, a polarizer 42, and a screen 41 stacked sequentially, with the polarizer 42 and other layers disposed on the light-emitting side of the screen 41.

[0074] By including the aforementioned layer structure in the display module 100, the required functions of the display module 100 can be achieved and good reliability can be obtained.

[0075] Please see Figure 5 , Figure 5 This is a schematic diagram of the structure of a display device provided in one embodiment of this application.

[0076] Secondly, according to embodiments of this application, a display device 200 is provided, including the display module 100 in any embodiment of the first aspect.

[0077] The display device 200 in this application embodiment can be any product or component with display function, such as a mobile phone, tablet computer, digital photo frame, or electronic paper. The display device 200 provided in this application embodiment has all the beneficial effects of the display module 100 provided in the first aspect above. For details, please refer to the specific descriptions of the display module 100 in the above embodiments. This embodiment will not repeat them here.

[0078] Please see Figure 6 , Figure 6 This is a flowchart of a processing method for a display module according to an embodiment of this application. In a third aspect, an embodiment of this application provides a processing method for a display module 100, comprising:

[0079] S1. Provide a second layer 40, and apply an adhesive material to one side surface of the second layer 40;

[0080] S2. A first layer group 10 is provided, the first layer group 10 having a hole area 101, a window area 102 surrounding the hole area 101 and a border area 103 surrounding the window area 102.

[0081] S3. A light-shielding layer 20 is formed on the first layer group 10, such that the light-shielding layer 20 includes a first light-shielding part 21 and a second light-shielding part 22. The first light-shielding part 21 is located in the frame area 103 and is disposed around the window area 102. The second light-shielding part 22 is disposed close to and around the hole area 101. A thinning area 23 is respectively provided on one side edge of the first light-shielding part 21 close to the window area 102 and on one side edge of the second light-shielding part 22 close to the window area 102. The thickness of the thinning area 23 of the first light-shielding part 21 decreases along the direction from the frame area 103 to the window area 102. The thickness of the thinning area 23 of the second light-shielding part 22 decreases along the direction from the hole area 101 to the window area 102.

[0082] S4. The side of the first layer group 10 with the light-shielding layer 20 is attached to the side of the second layer group 40 with the adhesive material to form an adhesive layer 30 and to bond the first layer group 10 and the second layer group 40 together.

[0083] Optionally, embodiments of this application also provide a processing method for processing the display module 100 as described in any of the embodiments of the first aspect. Specifically, the processing method first includes step S1 of providing a second layer group 40 and applying an adhesive material to one side of the second layer group 40. This adhesive material is used to form an adhesive layer 30 after being joined with the first layer group 10 and the light-shielding layer 20. Optionally, the adhesive material can be applied to the second layer group 40 by spraying, brushing, or other methods, as long as it can form an adhesive layer of uniform thickness.

[0084] In step S2, a first layer group 10 to be bonded is provided, and a hole area 101, a window area 102 and a border area 103 are correspondingly divided on the first layer group 10 according to the position of each area in the display module 100 to be processed, so as to prepare a light-shielding layer 20 according to the area.

[0085] In step S3, a light-shielding layer 20 is formed on the first layer group 10, and the position and thickness of the light-shielding layer 20 are adjusted according to the regions defined on the first layer group 10. Specifically, the formed light-shielding layer 20 includes two light-shielding portions: a first light-shielding portion 21 is disposed on the border area 103 and is used to block the area at the junction of the border area 103 and the viewing area 102; a second light-shielding portion 22 is disposed on a portion of the viewing area 102 near the hole area 101 and is used to block the area at the junction of the viewing area 102 and the hole area 101. In embodiments where a through hole is provided in the first layer group 10 or the second layer group 40 corresponding to the position of the hole area 101, the second light-shielding portion 22 is used to block the edge of the through hole.

[0086] At the same time, the thickness of the light-shielding layer 20 is adjusted, and a thinning area 23 near the edge is formed in both the first light-shielding part 21 and the second light-shielding part 22. The thickness of the light-shielding layer 20 in the thinning area 23 is reduced in a specific direction, that is, a transition area with gradually changing thickness is formed at the edge of the light-shielding part. It can be a slope or a stepped thickness gradient structure, etc.

[0087] In step S4, the first layer group 10 and the second layer group 40 are interlocked, and the first layer group 10 and the second layer group 40 are bonded together by applying adhesive to the second layer group 40. Specifically, the side of the first layer group 10 with the light-shielding layer 20 is aligned and interlocked with the side of the second layer group 40 with the adhesive. By pressing, the adhesive can be filled into the gap between the first light-shielding part 21 and the second light-shielding part 22 in the light-shielding layer 20 and bonded to the first layer group 10. The adhesive layer that is deformed and filled into the light-shielding layer 20 is the adhesive layer 30.

[0088] The aforementioned processing method enables the formed display module 100 to have a light-shielding layer 20 with a gradually thinning thickness. During the process of interlocking the first layer group 10 and the second layer group 40 in step S4, the adhesive material can gradually adhere to the light-shielding layer 20 through the edges of the gradually thickening light-shielding layer 20, facilitating the expulsion of gas at the edges, reducing the possibility of bubble formation, and thus improving the display effect. At the same time, it reduces the requirements for the filling performance of the adhesive material, making it easier to use a thinner adhesive layer 30 for bonding, thereby reducing the overall thickness of the module.

[0089] The processing method of the display module 100 provided in this application embodiment has all the beneficial effects of the display module 100 provided in the first aspect above. For details, please refer to the specific description of the display module 100 in the above embodiments. This embodiment will not repeat the description here.

[0090] In some optional embodiments, step S3 of forming the light-shielding layer 20 on the first layer group 10 includes:

[0091] A screen is provided, and a light-blocking layer 20 is formed by screen printing, so that the screen has a first area and a second area that is set along the thickness direction X of the first layer group 10 and corresponds to the thinning area 23, and the mesh count of the screen in the second area is greater than the mesh count of the screen in the first area.

[0092] Alternatively, step S3, which forms the light-shielding layer 20 on the first layer group 10, includes:

[0093] A light-shielding substrate layer is formed on the first layer group 10;

[0094] The light-shielding substrate layer is etched such that the etching rate of the thinned region 23 is greater than the etching rate in other regions that are offset from the thinned region 23.

[0095] As previously described, in step S3 of forming the light-shielding layer 20, various different methods can be used to process and form the light-shielding layer 20 with a gradual thickness. Specifically, the light-shielding layer 20 can be formed by screen printing. In the step of providing the screen, a printing screen is provided, and the light-shielding layer 20 is formed with dark ink by screen printing. During this process, in order to enable the light-shielding layer 20 to form a thinning zone 23 with a gradual thickness, the mesh count of the printing screen can be adjusted accordingly.

[0096] Optionally, when using screen printing, the printing thickness can be adjusted by changing the mesh count of the screen. Specifically, the mesh count refers to the number of openings per inch (or centimeter) of the screen, usually expressed as "mesh / inch". Generally, a higher mesh count results in a denser mesh with smaller openings, leading to a thinner ink layer; conversely, a lower mesh count results in a sparser mesh with larger openings, leading to a thicker ink layer.

[0097] Based on this, in the step of providing the screen printing plate, the screen printing plate can have a second region corresponding to the thinning region 23 and a first region corresponding to the region in the light-shielding layer 20 other than the thinning region 23. By making the mesh count in the second region greater than the mesh count in the first region, a thinner ink layer can be formed in the thinning region 23 accordingly. At the same time, in embodiments where the ink layer thickness gradually decreases, the mesh count in the second region can also be gradually increased along the direction of thickness reduction.

[0098] Alternatively, the light-shielding layer 20 can be processed by etching. In the etching process using different etching rates, a relatively uniform light-shielding substrate layer can be formed by methods such as inkjet printing or brush coating, followed by etching of the light-shielding layer 20 to achieve the desired thickness. During processing, the thickness of the light-shielding layer 20 after etching can be adjusted by changing the etching rate; that is, a higher etching rate can be used in the thinning area 23 to reduce the thickness of the resulting light-shielding layer 20.

[0099] In addition to the two processing methods mentioned above, a light-shielding layer 20 with varying thickness can also be formed by using a printhead that supports variable droplet technology (VSD) for inkjet printing, performing multiple multi-layer printing, adjusting the hydrophobic properties of the surface of the first layer group 10, or using inks with different solid contents for printing. These methods will not be elaborated further in this application.

[0100] It is understood that the above description and details are merely exemplary and explanatory, and do not constitute a limitation on this application. Those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Thus, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A display module, characterized in that, The display module includes a perforated area, a viewing area surrounding the perforated area, and a border area surrounding the viewing area. First layer group; A light-shielding layer is disposed on one side of the first layer group in the thickness direction of the display module. The light-shielding layer includes a first light-shielding part and a second light-shielding part. The first light-shielding part is located in the frame area and is disposed around the window area. The second light-shielding part is disposed close to and around the hole area. An adhesive layer is disposed on the side of the first layer group facing the light-shielding layer, and the light-shielding layer is sandwiched between the adhesive layer and the first layer group; The second layer is disposed on the side of the adhesive layer opposite to the first layer and is bonded to the first layer through the adhesive layer; The first light-shielding part and the second light-shielding part are respectively provided with thinning areas on one side edge near the window area. The thickness of the thinning area of ​​the first light-shielding part decreases along the direction from the frame area to the window area, and the thickness of the thinning area of ​​the second light-shielding part decreases along the direction from the hole area to the window area.

2. The display module according to claim 1, characterized in that, The light-shielding layer has a first surface and a second surface disposed opposite to each other in the thickness direction, the first surface abutting against the first layer group; The second surface is at least partially inclined toward the first surface, or the thinning area of ​​the first light-shielding part and the thinning area of ​​the second light-shielding part each include a plurality of sub-parts, the second surface of each sub-part and the first surface are parallel to each other, the thickness of at least a portion of the sub-parts of the first light-shielding part decreases sequentially along the direction from the border area to the window area, and the thickness of at least a portion of the sub-parts of the second light-shielding part decreases sequentially along the direction from the hole area to the window area.

3. The display module according to claim 2, characterized in that, The second surface is at least partially inclined toward the direction of the first surface, and the angle between the plane containing the second surface and the plane containing the first surface is 20° to 40°.

4. The display module according to claim 1, characterized in that, The maximum thickness of the light-shielding layer is greater than 10 μm, and the maximum thickness of the adhesive layer is less than or equal to 0.1 mm.

5. The display module according to claim 4, characterized in that, In the thinning region, the thickness of the light-shielding layer is 4 μm to 15 μm.

6. The display module according to claim 1, characterized in that, In the width direction perpendicular to its own extension direction, the width dimension of the thinning area in the first light-shielding part and the width dimension in the second light-shielding part are both 0.15mm to 0.2mm; Preferably, the thickness of the adhesive layer is H1, and the width of the thinning region is √3H1.

7. The display module according to claim 1, characterized in that, The first layer group includes a cover plate, and the second layer group includes a screen body and a polarizer stacked together.

8. A display device, characterized in that, Includes the display module as described in any one of claims 1 to 7.

9. A method for processing a display module, characterized in that, include: A second layer is provided, wherein an adhesive is applied to one side surface of the second layer; A first layer group is provided, the first layer group having a hole area, a window area surrounding the hole area, and a border area surrounding the window area; A light-shielding layer is formed on the first layer group, such that the light-shielding layer includes a first light-shielding part and a second light-shielding part. The first light-shielding part is located in the frame area and surrounds the window area. The second light-shielding part is located near and surrounds the hole area. Thinning areas are respectively provided on the side edge of the first light-shielding part near the window area and the side edge of the second light-shielding part near the window area. The thickness of the thinning area of ​​the first light-shielding part decreases along the direction from the frame area to the window area. The thickness of the thinning area of ​​the second light-shielding part decreases along the direction from the hole area to the window area. The side of the first layer group with the light-shielding layer is bonded to the side of the second layer group with the adhesive material to form an adhesive layer and bond the first layer group and the second layer group together.

10. The processing method according to claim 9, characterized in that, The step of forming a light-shielding layer on the first layer group includes: A screen printing plate is provided, and the light-blocking layer is formed by screen printing. The screen printing plate has a first area and a second area that is disposed along the thickness direction of the first layer group and corresponds to the thinning area. The mesh count of the screen printing plate in the second area is greater than the mesh count of the screen printing plate in the first area. Alternatively, the step of forming a light-shielding layer on the first layer group includes: A light-shielding substrate layer is formed on the first layer group; The light-shielding substrate layer is etched such that the etching rate of the thinned region is greater than the etching rate of other regions offset from the thinned region.

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