Display module, laminating method thereof and display device

Abstract

The invention provides a display module, a laminating method thereof and a display device. The display module comprises a display screen body, a bonding layer and a cover plate and further comprises a first ink layer, and the first ink layer is located between the bonding layer and the cover plate. Wherein the surface, close to the display screen body, of the first ink layer comprises a plurality of concave parts, and the concave parts are filled with the bonding layer. According to the embodiment of the invention, the surface, close to the display screen body, of the first ink layer comprises a plurality of concave parts, so that the fluidity of the bonding layer is improved when the display screen body is attached to the cover plate, and the segment difference between the first ink layer and the cover plate is further filled in the process of filling the plurality of concave parts by the bonding layer; therefore, the problems of poor lamination such as lamination bubbles in the lamination process of the display module and the like are effectively improved.

Description

Technical Field

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

[0002] With the development of display technology, the organic light-emitting diode (OLED) curved screen currently on the market is popular in the market because of its novel and high-end shape and its ability to better fit the curve of the hand.

[0003] However, during the cover bonding process of the curved screen, bubbles are likely to form at the corners, resulting in a certain defective rate. Summary of the invention

[0004] The embodiments of the present application provide a display module and a bonding method thereof and a display device, so as to improve the bonding problems such as bubbles in the bonding of the display module.

[0005] In a first aspect, a display module is provided, the display module comprising a display screen, an adhesive layer and a cover plate, the display module further comprising a first ink layer, the first ink layer being located between the adhesive layer and the cover plate, wherein the surface of the first ink layer close to the display screen comprises a plurality of recessed portions, and the adhesive layer fills the plurality of recessed portions.

[0006] In combination with the first aspect, in certain implementations of the first aspect, in a thickness direction of the first ink layer, a depth of the recessed portion is no greater than half of the thickness of the first ink layer.

[0007] In combination with the first aspect, in certain implementations of the first aspect, an orthographic projection of the first ink layer on the cover plate partially overlaps with an orthographic projection of the adhesive layer on the cover plate.

[0008] In combination with the first aspect, in certain implementations of the first aspect, an orthographic projection of the recessed portion on the cover plate is located within the overlapping area.

[0009] In combination with the first aspect, in certain implementations of the first aspect, in a direction perpendicular to the thickness of the first ink layer, a cross-sectional shape of the recessed portion is one of a rectangle, a trapezoid, an arc, and a triangle.

[0010] In combination with the first aspect, in certain implementations of the first aspect, the display module further includes a second ink layer, the second ink layer is located on a side of the first ink layer away from the display screen, and the orthographic projection of the first ink layer on the second ink layer is within the range of the second ink layer.

[0011] In combination with the first aspect, in certain implementations of the first aspect, the display module also includes a third ink layer, the third ink layer is located on a side of the second ink layer away from the display screen, and the orthographic projection of the second ink layer on the third ink layer is within the range of the third ink layer.

[0012] In combination with the first aspect, in certain implementations of the first aspect, the orthographic projections of the plurality of recessed portions on the first ink layer are nested in sequence.

[0013] In combination with the first aspect, in certain implementations of the first aspect, the orthographic projections of the plurality of recessed portions on the first ink layer are at least partially straight line-shaped.

[0014] In combination with the first aspect, in certain implementations of the first aspect, the orthographic projections of the plurality of recessed portions on the first ink layer are at least partially curved.

[0015] In combination with the first aspect, in certain implementations of the first aspect, the orthographic projections of the plurality of recessed portions on the first ink layer are arranged in an array.

[0016] In combination with the first aspect, in certain implementations of the first aspect, the cover plate has a straight area and a curved area that are adjacent to each other, and the first ink layer is located in the curved area.

[0017] In combination with the first aspect, in certain implementations of the first aspect, the center point of the cover plate is located in the straight area, the first ink layer includes a first side wall close to the center point, the first side wall and the surface of the cover plate close to the display screen form a first space, and the adhesive layer fills the first space.

[0018] In combination with the first aspect, in certain implementations of the first aspect, the display module also includes a second ink layer, the second ink layer is located between the first ink layer and the cover plate, and the second ink layer is located in the curved surface area; the second ink layer includes a second side wall close to the center point, the second side wall and the surface of the cover plate close to the display screen form a second space, and the adhesive layer fills the second space.

[0019] In combination with the first aspect, in certain implementations of the first aspect, a third space is formed on a surface of the first ink layer and the second ink layer close to a side of the display screen, and the adhesive layer fills the third space.

[0020] In a second aspect, a method for bonding a display module is provided, comprising:

[0021] Providing a display screen body and a cover plate;

[0022] Prepare an adhesive layer on one side of the display screen;

[0023] preparing a first ink layer on one side of the cover plate;

[0024] A plurality of recessed portions are formed on the surface of the first ink layer facing away from the cover plate;

[0025] The surface of the adhesive layer away from the display screen is laminated to the surface of the first ink layer away from the cover plate to obtain a display module.

[0026] In conjunction with the second aspect, in certain implementations of the second aspect, preparing a plurality of recessed portions on a surface of the first ink layer facing away from the cover plate includes:

[0027] A plurality of recessed portions are prepared on the surface of the first ink layer facing away from the cover plate by laser processing.

[0028] In a third aspect, a display device is provided, comprising any one of the display modules described above.

[0029] The present application provides a display module, a bonding method thereof, and a display device. The display module includes a display screen, an adhesive layer, and a cover plate. The display module also includes a first ink layer, and the first ink layer is located between the adhesive layer and the cover plate. The surface of the first ink layer close to the display screen includes a plurality of recessed portions, and the adhesive layer fills the plurality of recessed portions.

[0030] In the embodiment of the present application, the surface of the first ink layer close to the display screen body includes a plurality of recessed portions, so as to increase the fluidity of the adhesive layer when the display screen body and the cover plate are bonded together, so that the adhesive layer can further fill the step difference between the first ink layer and the cover plate in the process of filling the plurality of recessed portions, thereby effectively improving the bonding problems such as poor bonding such as bonding bubbles during the bonding process of the display module. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0032] Figure 1a The figure is a top view showing a module according to the prior art.

[0033] Figure 1b for Figure 1a Schematic diagram of the cross-sectional structure along the A-A' direction.

[0034] Figure 1c for Figure 1b A partial enlarged view of the dotted area.

[0035] Figure 2a It is a schematic diagram of the cross-sectional structure of a display module in one embodiment of the present application.

[0036] Figure 2b for Figure 2a A partial enlarged view of the dotted area.

[0037] Figure 3aIt is a schematic diagram of the cross-sectional structure of a display module in one embodiment of the present application.

[0038] Figure 3b for Figure 3a A partial enlarged view of the dotted area.

[0039] Figure 4 This is a top view from the first ink layer to the cover plate in one embodiment of the present application.

[0040] Figure 5 This is a top view from the first ink layer to the cover plate in another embodiment of the present application.

[0041] Figure 6 It is a flow chart of a method for attaching a display module in one embodiment of the present application. DETAILED DESCRIPTION

[0042] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. In the detailed description below, many specific details are proposed to provide a comprehensive understanding of the present application. However, it is obvious to those skilled in the art that 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 examples of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application. The features and exemplary embodiments of various aspects of the present application will be described in detail below.

[0043] Figure 1a It is a top view of a display module in the prior art. Figure 1b for Figure 1a Schematic diagram of the cross-sectional structure along the A-A' direction, Figure 1c for Figure 1b A partial enlarged view of the dotted line area. Figure 1a , Figure 1b and Figure 1c As shown, the display module includes a display screen 10, an adhesive layer 20 and a cover plate 30, and the display module also includes a first ink layer 40 and a second ink layer 50, the first ink layer 40 and the second ink layer 50 are located between the adhesive layer 20 and the cover plate 30, and the first ink layer 40 is located on the side of the second ink layer 50 close to the adhesive layer 20. In addition, as Figure 1a As shown, the cover plate 30 has a straight area and a curved area that are adjacent to each other, and the first ink layer 40 and the second ink layer 50 are located in the curved area.

[0044] As described in the background technology, the display module in the prior art still has some poor lamination problems. Specifically, as shown in FIG. 1 , the first ink layer 40 and the second ink layer 50 are located in the curved surface area. There is an obvious step difference between the first ink layer 40 and the second ink layer 50 and the cover plate 30. As the display screen frame of electronic products is getting smaller and smaller, the filling capacity of the adhesive layer 20 at the step difference is limited and the step difference cannot be completely filled. During the lamination process, lamination bubbles and other poor lamination problems will be formed at the step difference.

[0045] In view of this, the present application provides a display module, a bonding method thereof, and a display device, wherein a first ink layer is provided with a surface close to a display screen including a plurality of recessed portions so as to increase the fluidity of the adhesive layer when the display screen is bonded to a cover plate, so that the adhesive layer further fills the step difference between the first ink layer and the cover plate in the process of filling the plurality of recessed portions, thereby effectively improving bonding problems such as poor bonding such as bonding bubbles during the bonding process of the display module.

[0046] Figure 2a This is a schematic diagram of the cross-sectional structure of a display module in one embodiment of the present application. Figure 2b for Figure 2a A partial enlarged view of the dotted line area. Figure 2a and Figure 2b As shown, the display module includes a display screen 10, an adhesive layer 20 and a cover plate 30. The display module also includes a first ink layer 40, and the first ink layer 40 is located between the adhesive layer 20 and the cover plate 30. The surface of the first ink layer 40 close to the display screen 10 includes a plurality of recessed portions 400, and the adhesive layer 20 fills the plurality of recessed portions 400.

[0047] In this embodiment, the surface of the first ink layer close to the display screen includes a plurality of recessed portions, so as to increase the fluidity of the adhesive layer when the display screen and the cover plate are bonded together, so that the adhesive layer can further fill the step difference between the first ink layer and the cover plate in the process of filling the plurality of recessed portions, thereby effectively improving the bonding problems such as bubbles and other poor bonding during the bonding process of the display module.

[0048] In one embodiment, the orthographic projection of the first ink layer 40 on the cover plate 30 partially overlaps with the orthographic projection of the adhesive layer 20 on the cover plate 30 .

[0049] In one embodiment, the orthographic projection of the recessed portion 400 on the cover plate 30 is located within the overlapping region of the orthographic projections of the first ink layer 40 and the adhesive layer 20 on the cover plate 30. This arrangement can simplify the process, shorten the process time, and improve production efficiency while ensuring that the adhesive layer 20 is further promoted to fill the step difference between the first ink layer 40 and the cover plate 30.

[0050] In one embodiment, in a direction perpendicular to the thickness of the first ink layer 40 , the cross-sectional shape of the recessed portion 400 is one of a rectangle, a trapezoid, an arc, and a triangle.

[0051] In one embodiment, in the thickness direction of the first ink layer 40, the depth of the recessed portion 400 is no more than half of the thickness of the first ink layer 40. In this way, the light shielding effect of the first ink layer 40 can be ensured, the probability of light leakage can be further reduced, and the contrast and image quality of the display device can be improved while promoting the adhesive layer 20 to further fill the step difference between the first ink layer 40 and the cover plate 30.

[0052] In one embodiment, the display module further includes a polarizer 60, and the polarizer 60 is located between the display screen 10 and the bonding layer 20. The polarizer is used to control the polarization direction of light and is an important optical element of the display module.

[0053] In one embodiment, the first ink layer 40 includes, but is not limited to, pigments, resins, solvents and additives. Pigments provide color to the ink layer. Common pigments include organic pigments and inorganic pigments, which determine the hiding power and color performance of the ink. Resin is one of the main components of the ink layer. As a carrier of the pigment, it affects the adhesion and drying speed of the ink. Common types of resins include epoxy resins, acrylic resins, etc. Solvents are used to adjust the viscosity and fluidity of the ink layer to facilitate printing. During the drying process, the solvent will evaporate. Common solvents include alcohols, ketones, esters, etc. In order to improve the performance of the ink layer, various additives may be added, such as leveling agents, stabilizers, anti-settling agents, desiccants, etc.

[0054] In one embodiment, the adhesive layer includes optically clear adhesive (OCA), which needs to have a certain fluidity during the bonding process to ensure that the adhesive layer can be evenly distributed between the bonding surfaces and form a good bonding effect. In addition, the optical adhesive also has the characteristics of high light transmittance, high adhesion, weather resistance, water resistance, high temperature resistance and UV resistance. After bonding, the optical adhesive will undergo a curing process, during which the fluidity of the colloid will gradually decrease, and finally a stable adhesive layer will be formed.

[0055] In one embodiment, the material of the optical adhesive includes at least one of optical acrylic adhesive, silicone rubber, acrylic resin, unsaturated polyester and polyurethane, and epoxy resin. Optical acrylic adhesive has high light transmittance, with a total light transmittance greater than 99%; silicone rubber can provide additional weather resistance and temperature resistance; acrylic resin helps to provide good bonding performance; unsaturated polyester and polyurethane help to increase bonding strength or improve optical properties; epoxy resin can be used to enhance the bonding performance and chemical resistance of the optical adhesive.

[0056] In one embodiment, the cover plate 30 has a straight area and a curved area disposed adjacent to each other, and the first ink layer 40 is located in the curved area. Figure 2a and Figure 2b The first ink layer 40 is arranged in the curved border region of the display module, and the first ink layer 40 can further reduce the probability of light leakage and improve the contrast and image quality of the display device.

[0057] In one embodiment, the center point of the cover plate 30 is located in the flat area, the first ink layer 40 includes a first side wall 41 close to the center point, the first side wall 41 and the surface of the cover plate 30 close to the display screen 10 form a first space S1, and the adhesive layer fills the first space S1. In this embodiment, the surface of the first ink layer close to the display screen includes a plurality of recessed portions, so as to increase the fluidity of the adhesive layer when the display screen and the cover plate are bonded, so that the adhesive layer further fills the first space formed by the first ink layer and the cover plate in the process of filling the plurality of recessed portions, thereby effectively improving the bonding problems such as bonding bubbles and poor bonding during the bonding process of the display module.

[0058] In one embodiment, the display module further includes a second ink layer 50, which is located on a side of the first ink layer 40 away from the display screen 10, and the orthographic projection of the first ink layer 40 on the second ink layer 50 is within the range of the second ink layer 50. Figure 3a and Figure 3b . Figure 3a This is a schematic diagram of the cross-sectional structure of a display module in one embodiment of the present application. Figure 3b for Figure 3a The present embodiment provides two ink layers to better increase the opacity of the edge of the display module, improve the light shielding effect of the edge of the display module, and further reduce the possibility of light leakage from the non-display area.

[0059] In one embodiment, the second ink layer 50 is located in the curved surface area. The second ink layer 50 is arranged in the curved surface frame area of ​​the display module, and the second ink layer 50 can further prevent light leakage and improve the contrast and image quality of the display device.

[0060] In one embodiment, the second ink layer 50 includes a second side wall 51 near the center point, the second side wall 51 and the surface of the cover plate 30 near the display screen 10 form a second space S2, and the adhesive layer 20 fills the second space S2. In this embodiment, the surface of the first ink layer near the display screen includes a plurality of recessed portions, so that when the display screen and the cover plate are bonded, the fluidity of the adhesive layer is increased, so that the adhesive layer further fills the second space formed by the second ink layer and the cover plate in the process of filling the plurality of recessed portions, thereby effectively improving the bonding problems such as bonding bubbles and poor bonding during the bonding process of the display module.

[0061] In one embodiment, the first side wall 41 of the first ink layer 40 and the surface of the second ink layer 50 close to the display screen 10 form a third space S3, and the adhesive layer 20 fills the third space S3. In this embodiment, the surface of the first ink layer close to the display screen includes a plurality of recessed portions, so as to increase the fluidity of the adhesive layer when the display screen and the cover plate are bonded together, so that the adhesive layer further fills the third space formed by the first ink layer and the second ink layer in the process of filling the plurality of recessed portions, thereby effectively improving the bonding problems such as bonding bubbles and poor bonding during the bonding process of the display module.

[0062] In one embodiment, the display module further includes a third ink layer, which is located on a side of the second ink layer 50 away from the display screen 10, and the orthographic projection of the second ink layer 50 on the third ink layer is within the range of the third ink layer. By providing three ink layers, the present embodiment can further increase the opacity of the edge of the display module, improve the shading effect of the edge of the display module, and further reduce the possibility of light leakage from the non-display area.

[0063] Figure 4 This is a top view from the first ink layer to the cover plate in one embodiment of the present application. Figure 4 As shown, the orthographic projections of the plurality of recessed portions 400 on the first ink layer 40 are nested in sequence. The plurality of recessed portions 400 nested in sequence are a continuous structure arranged around the display area of ​​the display body 10. Such an arrangement helps the adhesive layer 20 at each position of the display module to further fill the step difference between the first ink layer 40 and the cover plate 30, and effectively improves the problem of poor lamination such as lamination bubbles generated at each position of the display module during the lamination process.

[0064] In one embodiment, the orthographic projections of the plurality of recessed portions 400 on the first ink layer 40 are at least partially linear, as shown in FIG. Figure 4 The arrangement of the linear recessed portion 400 can simplify the preparation process of the recessed portion, shorten the preparation time, and improve the production efficiency.

[0065] In one embodiment, the orthographic projections of the plurality of recessed portions 400 on the first ink layer 40 are at least partially curved, as shown in FIG. Figure 5 shown. Figure 5 This is a top view from the first ink layer to the cover plate in another embodiment of the present application. The provision of the curved recessed portion 400 can increase the overall area of ​​the recessed portion 400, which helps to further improve the fluidity of the adhesive layer 20, thereby further promoting the adhesive layer 20 at various positions of the display module to further fill the step difference between the first ink layer 40 and the cover plate 30, and effectively improve the poor bonding problem such as bonding bubbles generated at various positions of the display module during the bonding process.

[0066] In one embodiment, the orthographic projections of the plurality of recessed portions 400 on the first ink layer 40 are arranged in an array, for example, the orthographic projections of the plurality of recessed portions 400 on the first ink layer 40 are arranged in a plurality of dots. The plurality of recessed portions 400 arranged in an array can better ensure the light shielding effect of the first ink layer 40 while ensuring the filling effect of the adhesive layer 20 on the step difference between the first ink layer 40 and the cover plate 30, further reduce the probability of light leakage, and improve the contrast and image quality of the display device.

[0067] The present application also provides a method for attaching a display module, the specific steps are as follows: Figure 6 As shown, Figure 6 1 is a flow chart of a method for attaching a display module in an embodiment of the present application. Specific steps of the method for attaching a display module are described as follows.

[0068] S610: providing a display screen and a cover plate;

[0069] S620: preparing an adhesive layer on one side of the display screen;

[0070] S630: preparing a first ink layer on one side of the cover plate;

[0071] S640: preparing a plurality of recessed portions on a surface of the first ink layer facing away from the cover plate;

[0072] S650: Laminating the surface of the adhesive layer away from the display screen body and the surface of the first ink layer away from the cover plate to obtain a display module.

[0073] In this embodiment, a plurality of recessed portions are prepared on the surface of the first ink layer close to the display screen so as to increase the fluidity of the adhesive layer when the display screen and the cover plate are bonded together. In the process of filling the plurality of recessed portions, the adhesive layer further fills the step difference between the first ink layer and the cover plate, thereby effectively improving the bonding problems such as bubbles and other poor bonding during the bonding process of the display module.

[0074] In one embodiment, preparing a plurality of recessed portions on a surface of the first ink layer facing away from the cover plate comprises:

[0075] A plurality of recessed portions are prepared on the surface of the first ink layer facing away from the cover plate by laser processing. Laser processing, commonly known as laser processing technology, is a method of processing materials using a high-power laser beam. The advantages of laser processing technology are its high precision, high speed, non-contact nature, and the ability to operate on difficult-to-process materials.

[0076] In one embodiment, in the thickness direction of the first ink layer 40, the depth of the recessed portion 400 is not greater than half of the thickness of the first ink layer 40. The reason for such a setting is that if the depth of the recessed portion 400 is too great, it will have a certain negative impact on the light shielding effect of the first ink layer 40. In this embodiment, the depth of the recessed portion 400 is controlled by controlling the laser power, processing speed, processing time and other factors of the laser process so as to be no greater than half of the thickness of the first ink layer 40.

[0077] In one embodiment, preparing a plurality of recessed portions on a surface of the first ink layer facing away from the cover plate by a laser process comprises:

[0078] A plurality of parallel and annularly distributed recessed portions are prepared on the surface of the first ink layer away from the cover plate by laser process. The plurality of parallel annularly distributed recessed portions 400 are a continuous structure surrounding the display area of ​​the display screen 10. Such arrangement helps the adhesive layer 20 at each position of the display module to further fill the step difference between the first ink layer 40 and the cover plate 30, and effectively improves the problem of poor lamination such as lamination bubbles generated at each position of the display module during the lamination process.

[0079] In one embodiment, the plurality of concave portions arranged in parallel and distributed in an annular manner are in a straight line shape. The arrangement of the straight line concave portions 400 can simplify the preparation process of the concave portions, shorten the preparation time, and improve the production efficiency.

[0080] In one embodiment, a plurality of concave portions arranged in parallel and distributed in an annular manner are in a curved shape. The provision of the curved concave portion 400 can increase the overall area of ​​the concave portion 400, which helps to further improve the fluidity of the adhesive layer 20, thereby further promoting the adhesive layer 20 at each position of the display module to further fill the step difference between the first ink layer 40 and the cover plate 30, and effectively improve the problem of poor bonding such as bonding bubbles generated at each position of the display module during the bonding process.

[0081] In one embodiment, preparing a plurality of recessed portions on a surface of the first ink layer facing away from the cover plate by a laser process comprises:

[0082] A plurality of recessed portions arranged in an array are prepared on the surface of the first ink layer away from the cover plate by a laser process. The plurality of recessed portions 400 arranged in an array can better ensure the light shielding effect of the first ink layer 40, further reduce the probability of light leakage, and improve the contrast and image quality of the display device, while ensuring the filling effect of the adhesive layer 20 on the step difference between the first ink layer 40 and the cover plate 30.

[0083] In one embodiment, the plurality of recessed portions arranged in an array include a plurality of recessed portions arranged in a dot shape.

[0084] In one embodiment, preparing a first ink layer on one side of the cover plate comprises:

[0085] A second ink layer is prepared on one side of the cover plate, and a first ink layer is prepared on the side of the second ink layer away from the cover plate. By adding the second ink layer, this embodiment can better increase the opacity of the edge of the display module, improve the shading effect of the edge of the display module, and further reduce the possibility of light leakage from the non-display area.

[0086] In one embodiment, preparing a second ink layer on one side of the cover plate comprises:

[0087] A third ink layer is prepared on one side of the cover plate, and a second ink layer is prepared on the side of the third ink layer away from the cover plate. By adding the third ink layer, this embodiment can better increase the opacity of the edge of the display module, improve the shading effect of the edge of the display module, and further reduce the possibility of light leakage from the non-display area.

[0088] The present application also provides a display device, including any of the above display modules. The display device provided in the embodiments of the present application can be a mobile terminal, such as a mobile phone, or a notebook, a tablet computer, a computer, a car navigation system, a wearable device, etc., and the present application does not make specific restrictions on this.

[0089] It should be noted that in the drawings of the present application document, the sizes of layers and regions may be exaggerated for clarity of illustration. It is also understood that when an element or layer is referred to as being "on" another element or layer, it may be directly on the other element, or there may be an intermediate layer. In addition, it is understood that when an element or layer is referred to as being "under" another element or layer, it may be directly under the other element, or there may be more than one intermediate layer or element. In addition, it is also understood that when a layer or element is referred to as being "between" two layers or two elements, it may be the only layer between the two layers or two elements, or there may also be more than one intermediate layer or element. Similar reference numerals throughout the text indicate similar elements.

[0090] In addition, 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.

[0091] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0092] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A display module, characterized in that: include: Display screen, adhesive layer and cover plate; as well as A first ink layer, located between the adhesive layer and the cover plate; Wherein, the surface of the first ink layer close to the display screen body includes a plurality of recessed portions, and the adhesive layer fills the plurality of recessed portions.

2. The display module according to claim 1, characterized in that: In the thickness direction of the first ink layer, the depth of the recessed portion is no greater than half of the thickness of the first ink layer; Preferably, the orthographic projection of the first ink layer on the cover plate partially overlaps with the orthographic projection of the adhesive layer on the cover plate; Preferably, the orthographic projection of the recessed portion on the cover plate is located within the overlapping region of the orthographic projection of the first ink layer on the cover plate and the orthographic projection of the adhesive layer on the cover plate; Preferably, in a direction perpendicular to the thickness of the first ink layer, the cross-sectional shape of the recessed portion is one of a rectangle, a trapezoid, an arc and a triangle.

3. The display module according to claim 1, characterized in that: The display module further includes a second ink layer, the second ink layer is located on a side of the first ink layer away from the display screen, and the orthographic projection of the first ink layer on the second ink layer is within the range of the second ink layer; Preferably, the display module further comprises a third ink layer, the third ink layer is located on a side of the second ink layer away from the display screen, and the orthographic projection of the second ink layer on the third ink layer is within the range of the third ink layer.

4. The display module according to claim 1, characterized in that: The orthographic projections of the plurality of recessed portions on the first ink layer are arranged in a circular manner with nested distribution in sequence; Preferably, the orthographic projections of the plurality of recessed portions on the first ink layer are at least partially linear; Preferably, the orthographic projections of the plurality of recessed portions on the first ink layer are at least partially curved.

5. The display module according to claim 1, characterized in that: The orthographic projections of the plurality of recessed portions on the first ink layer are arranged in an array.

6. The display module according to claim 1, characterized in that: The cover plate has a straight area and a curved area that are adjacent to each other, and the first ink layer is located in the curved area; Preferably, the center point of the cover plate is located in the flat area, the first ink layer includes a first side wall close to the center point, the first side wall and the surface of the cover plate close to the display screen form a first space, and the adhesive layer fills the first space.

7. The display module according to claim 6, characterized in that: The display module further includes a second ink layer, the second ink layer is located between the first ink layer and the cover plate, and the second ink layer is located in the curved surface area; the second ink layer includes a second side wall close to the center point, the second side wall and the surface of the cover plate close to the display screen form a second space, and the adhesive layer fills the second space; Preferably, a third space is formed on the surface of the first ink layer and the second ink layer close to the display screen, and the adhesive layer fills the third space.

8. A method for bonding a display module, characterized in that: include: Providing a display screen body and a cover plate; Prepare an adhesive layer on one side of the display screen; preparing a first ink layer on one side of the cover plate; A plurality of recessed portions are formed on a surface of the first ink layer facing away from the cover plate; The surface of the adhesive layer away from the display screen is laminated to the surface of the first ink layer away from the cover plate to obtain the display module.

9. The method for bonding a display module according to claim 8, characterized in that: The step of preparing a plurality of recessed portions on a surface of the first ink layer facing away from the cover plate comprises: A plurality of recessed portions are prepared on a surface of the first ink layer facing away from the cover plate by laser processing.

10. A display device, characterized in that: A display module comprising any one of claims 1-7.

Images