Display module and display module manufacturing method

When the display panel is bonded to the 3D curved cover, the gap between the display panel and the cover is filled with a second adhesive layer, which solves the problem of rebounding at the edge of the display panel and improves the reliability and yield of the display module.

CN119942916AActive Publication Date: 2025-05-06HEFEI VISIONOX TECH CO LTD
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Patent Information

Application Number
CN202510120901.2
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-01-25
Publication Date
2025-05-06
Estimated Expiration
2045-01-25

AI Technical Summary

Technical Problem

When the display panel is fitted with the 3D curved cover, there is a rebound phenomenon on the edge of the display panel, resulting in a significant difference in the display effect of the rebound position.

Method used

A display module is designed, including a display panel, a first adhesive adhesive layer, a second adhesive layer and a cover plate. The second adhesive layer is located on the light-out side of the display panel, close to one end of the bending region, and its forward projection on the bent portion of the cover plate coincides with the forward projection of the bending region of the display panel, thereby filling the gap between the display panel and the cover plate.

Benefits of technology

By providing a second adhesive layer to fill the gap between the display panel and the cover plate, the bending area of ​​the display panel is avoided to appear rebound wrinkles when bonded, and the reliability and yield of the display module are improved.

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Abstract

The invention provides a display module and a manufacturing method of the display module, the display module comprises a display panel, a first adhesive layer, a second adhesive layer and a cover plate, the display panel comprises a main body area and a bending area located on one side of the main body area, and the first adhesive layer is located on the light emitting side of the display panel; the second adhesive layer is located on the light emitting side of the display panel and located at the end, close to the bending area, of the first adhesive layer. The cover plate is located on the sides, away from the display panel, of the first adhesive layer and the second adhesive layer, the cover plate comprises a straight part and a bent part surrounding at least part of the straight part, and the orthographic projection of the second adhesive layer on the bent part coincides with the orthographic projection of a bent area of the display panel on the bent part. The gap between the bending area of the display panel and the bending part of the cover plate is filled with the second adhesive layer, so that when the display panel is attached to the cover plate, rebound wrinkles do not occur in the bending area of the display panel.
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Description

Technical Field

[0001] The present disclosure relates to the field of display technology, and in particular to a display module and a method for manufacturing the display module. Background Art

[0002] At present, with the rapid development of display technology, various types of display products have gradually appeared in people's lives. Among them, 3D curved display products with four-sided curved CG state have good customer recognition in the market and are favored by more and more consumers. However, when the display panel is fitted with the 3D curved cover, there is a rebound phenomenon at the edge of the display panel, resulting in obvious differences in the display effect at the rebound position. Summary of the invention

[0003] In view of this, the purpose of the present disclosure is to provide a display module and a method for manufacturing the display module, wherein the display module can solve at least one of the above-mentioned technical problems.

[0004] Based on the above objectives, the present disclosure discloses a display module, which includes:

[0005] The display panel comprises a main body area and a bending area located at one side of the main body area;

[0006] A first adhesive layer, located on the light emitting side of the display panel;

[0007] A second adhesive layer, located on the light emitting side of the display panel and located at one end of the first adhesive layer close to the bending area;

[0008] A cover plate is located on a side of the first adhesive layer and the second adhesive layer away from the display panel, the cover plate comprising a straight portion and a curved portion surrounding at least a portion of the straight portion, wherein an orthographic projection of the second adhesive layer on the curved portion coincides with an orthographic projection of the bending area of ​​the display panel on the curved portion.

[0009] In one embodiment, the second adhesive layer comprises a variable viscosity layer;

[0010] Preferably, the material of the second adhesive layer includes any one of UV viscosity-reducing adhesive, low-temperature viscosity-reducing adhesive, and high-temperature viscosity-reducing adhesive;

[0011] Preferably, the material of the first adhesive layer includes optical adhesive.

[0012] In one embodiment, the thickness of the second adhesive layer is between 20-300 μm;

[0013] Preferably, at least a portion of the second adhesive layer extends to a side of the first adhesive layer close to the display panel.

[0014] In one embodiment, it further comprises:

[0015] A third adhesive layer, located between the second adhesive layer and the display panel, and the third adhesive layer is located in a bending area of ​​the display panel;

[0016] Preferably, the material of the third adhesive layer includes optical adhesive.

[0017] In one embodiment, it also includes:

[0018] A polarizer, located between the first adhesive layer and the display panel;

[0019] Preferably, the orthographic projection of the polarizer on the display panel is located within the orthographic projection range of the first adhesive layer on the display panel;

[0020] Preferably, at least a portion of the second adhesive layer extends to a side of the first adhesive layer close to the display panel and is attached to an end of the polarizer close to the bending area;

[0021] Preferably, the display module further comprises a supporting film, and the supporting film is located on a side of the display panel away from the polarizer.

[0022] Based on the same inventive concept, the present disclosure also provides a method for manufacturing a display module, the method comprising the following steps:

[0023] Providing a display panel, the display panel comprising a main body area and a bending area located on one side of the main body area;

[0024] forming a first adhesive material on the light-emitting side of the display panel,

[0025] Forming a second adhesive material on the light emitting side of the display panel and at one end of the first adhesive layer close to the bending area;

[0026] Providing a cover plate, bonding the display panel to the cover plate through a first adhesive layer and a second adhesive layer, wherein the cover plate comprises a straight portion and a curved portion surrounding at least a portion of the straight portion, wherein an orthographic projection of the second adhesive layer on the curved portion coincides with an orthographic projection of a bending area of ​​the display panel on the curved portion;

[0027] In one embodiment, after the step of providing a cover plate and bonding the display panel to the cover plate through a first adhesive layer and a second adhesive layer, the step further includes:

[0028] removing the second adhesive layer;

[0029] Preferably, the step of removing the second adhesive layer comprises:

[0030] Performing a viscosity-reducing treatment on the second adhesive layer to form a debonded state;

[0031] Peeling the second adhesive layer off the display panel;

[0032] Preferably, the viscosity reduction treatment includes subjecting the second adhesive layer to UV light, low temperature, high temperature or adding a debonding agent.

[0033] In one embodiment, the step of providing a cover plate and bonding the display panel to the cover plate through a first adhesive layer and a second adhesive layer comprises:

[0034] Providing the cover plate, wherein the cover plate is located on a side of the first adhesive material and the second adhesive material away from the display panel;

[0035] The first adhesive material and the second adhesive material are cured to form the first adhesive layer and the second adhesive layer, so that the display panel is attached to the cover plate.

[0036] In one embodiment, before the step of forming a first adhesive layer on the light-emitting side of the display panel, the step further includes:

[0037] forming a polarizer on the light-emitting side of the display panel;

[0038] Preferably, a first adhesive layer is formed on a side of the polarizer facing away from the display panel.

[0039] Based on the same inventive concept, the present disclosure also provides a display module, which includes a display module manufactured by the above manufacturing method.

[0040] Compared with the prior art, the display module provided by the present invention, by setting a second adhesive layer to fill the gap between the bending area of ​​the display panel and the bending portion of the cover plate, can ensure that when the display panel and the cover plate are bonded, no rebound wrinkles will appear in the bending area of ​​the display panel, thereby improving the reliability and yield of the display module. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the technical solutions in the present disclosure or related technologies, the drawings required for use in the embodiments or related technical descriptions are briefly introduced below. Obviously, the drawings described below are only embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0042] Figure 1 It is a schematic diagram of the structure of a display module in the prior art;

[0043] Figure 2A schematic diagram of the display module structure provided in an embodiment of the present application;

[0044] Figure 3 A schematic diagram of a partial structure of a display module provided in an embodiment of the present application;

[0045] Figure 4 A flow chart of a method for manufacturing a display module is provided for implementing the present application. DETAILED DESCRIPTION

[0046] In order to make the objectives, technical solutions and advantages of the present disclosure more clearly understood, the present disclosure is further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.

[0047] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present disclosure should be understood by people with ordinary skills in the field to which the present disclosure belongs. The "first", "second" and similar words used in the embodiments of the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. "Including" or "comprising" and similar words mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0048] refer to Figure 1 , Figure 1Schematic diagram of the structure of a display module of the prior art. In the related art, a polarizer 500 and an optical adhesive layer 200 are sequentially arranged between a display panel 100 and a cover plate 400, wherein the display panel 10 includes a main body area 11 and a bending area 12 located on one side of the main body area 11, the cover plate 400 includes a straight portion and a bending portion 410 surrounding at least part of the straight portion, the orthographic projection of the optical adhesive layer 200 on the display panel 10 is located on the main body area 11 and part of the bending area 12 of the display panel 10, and the orthographic projection of the optical adhesive layer 200 on the cover plate 400 is located on the straight portion and part of the bending portion 410 of the cover plate 400. 10, that is, the optical adhesive layer 200 does not completely cover the bent portion 410 of the cover plate 40, so that there is a gap A between the bent area 12 of the display panel 10 and the bent portion of the cover plate 40. If the curvature of the bent portion of the cover plate 40 is too large near the cut-off position (edge) of the optical adhesive, due to the rigidity of the display panel 100 itself, it is very easy to form rebound wrinkles at this position when the display panel 100 and the cover plate 400 are bonded. The wrinkles will become more serious as the curvature of the short side of the cover plate 400 increases, which may affect the reliability verification of the module screen after bonding (harsh conditions such as high temperature and high humidity).

[0049] Based on the above reasons, the present application provides a display module, a display module and a method for manufacturing a display module, wherein the display module includes a display panel 10, a first adhesive layer 20, a second adhesive layer 30 and a cover plate 40, the display panel 10 includes a main body area 11 and a bending area 12 located on one side of the main body area 11, the first adhesive layer 20 is located on the light emitting side B1 of the display panel 10; the second adhesive layer 30 is located on the light emitting side B1 of the display panel 10 and is located at one end of the first adhesive layer 20 close to the bending area 12; the cover plate 40 is located on the first adhesive layer 20 On the side of the second adhesive layer 30 facing away from the display panel 10, the cover plate 40 includes a straight portion and a curved portion 41 surrounding at least part of the straight portion, wherein the orthographic projection of the second adhesive layer 30 on the curved portion 41 coincides with the orthographic projection of the bending area 12 of the display panel 10 on the curved portion 41. In this embodiment, by setting the second adhesive layer 30 to fill the gap between the bending area 12 of the display panel 10 and the bending portion of the cover plate 40, when the display panel 10 and the cover plate 40 are bonded together, no rebound wrinkles will appear in the bending area 12 of the display panel 10.

[0050] Next, combine Figure 2-Figure 3 To describe in detail the display module provided by the present application, Figure 2 A schematic diagram of the display module structure provided in an embodiment of the present application; Figure 3 A schematic diagram of a partial structure of a display module provided in an embodiment of the present application;

[0051] The display panel 10 in the present embodiment specifically includes a flexible display panel 10. Further, the flexible display panel 10 includes a four-curved flexible display panel, and the display panel 10 includes a main area 11, a bending area 12 located on one side of the main area 11, and a binding area 13 located on the side of the bending area 12 away from the main area 11; wherein the main area 11 includes a flat portion 111 and an arc portion 112, and the arc portion 112 is located on the side of the flat portion 111 close to the bending area 12. In the thickness direction of the display panel 10, the display panel 10 has a light emitting side B1 and a backlight side B2. The bending area 12 of the display panel 10 is bent so that the binding area 13 is located on the backlight side B2 of the main area 11. In the present embodiment, since the display module in the present embodiment is an intermediate product of the display module, the binding area 13 has not been bent to the backlight side B2 of the main area 11 through the bending area 12, that is, the bending area 12 is in an unbent state.

[0052] Exemplarily, the flexible display panel 10 is, for example, an OLED (organic light-emitting diode) display panel 10, a QLED (quantum dot light-emitting diode) display panel 10, a Micro-LED (micrometer light-emitting diode) display panel 10 or a Mini-LED (mini light-emitting diode) display panel 10, etc.

[0053] The display module also includes a polarizer 50, which is located on the light-emitting side B1 of the display panel 10. The orthographic projection of the polarizer 50 on the display panel 10 is located on the main area 11 of the display panel 10. By arranging the polarizer 50 on the light-emitting side B1 of the display panel 10, it is helpful to reduce the influence of ambient light on the display panel 10. The polarizer 50 is arranged between the cover plate 40 and the display panel 10 to filter the ambient light.

[0054] Exemplarily, the polarizer 50 may be a linear polarizer 50 or a circular polarizer 50 .

[0055] The display module also includes a first adhesive layer 20, which is located on the light-emitting side B1 of the display panel 10 and is used to bond the display panel 10 to the cover plate 40. Specifically, the first adhesive layer 20 is located on the side of the polarizer 50 away from the display panel 10, and the first adhesive layer 20 is used to bond the polarizer 50 to the cover plate 40; further, the orthographic projection of the polarizer 50 on the display panel 10 is located within the orthographic projection range of the first adhesive layer 20 on the display panel 10, and the orthographic projection of the first adhesive layer 20 on the display panel 10 is located in the main body area 11 and part of the bending area 12 of the display panel 10, that is, the first adhesive layer covers the main body area 11 and part of the bending area 12 of the display panel 10, and at the same time, the orthographic projection of the first adhesive layer 20 on the cover plate 40 is located on the straight part and part of the bending part of the cover plate 40 panel, that is, the first adhesive layer 20 does not completely cover the bending part of the display panel 10.

[0056] Exemplarily, the material of the first adhesive layer 20 includes optical adhesive.

[0057] The display module also includes a cover plate 40, which specifically includes a curved cover plate 40. Further, the cover plate includes a four-curved cover plate adapted to the four-curved flexible display panel, that is, the edge of the cover plate 40 is a curved shape, and the arc-shaped portion 112 of the display panel 10 is at least partially fitted with the edge of the cover plate 40. The cover plate 40 is located on the side of the first adhesive layer away from the display panel 10. In this embodiment, the cover plate 40 includes a straight portion and a curved portion 41 surrounding at least the straight portion. The main body of the display panel 10 is fitted on the straight portion and the partial curved portion 41 of the cover plate 40, that is, the flat portion 111 of the display panel 10 is fitted on the straight portion of the cover plate 40, and the arc-shaped portion 112 of the display panel 10 is fitted on the curved portion 41 of the cover plate 40, and the curved portion 41 wraps the arc-shaped portion 112 of the display panel 10.

[0058] Exemplarily, the material of the cover plate 40 may include a glass cover plate 40, or may be a flexible organic cover plate 40 formed of polyethylene terephthalate or polyimide. The embodiment of the present invention does not specifically limit this. When the curved cover plate 40 adopts a flexible organic cover plate 40, it can protect the flexible display module while maintaining a certain flexibility and being easy to bend.

[0059] The display module further includes a second adhesive layer 30, which is located on the light emitting side B1 of the display panel 10 and at one end of the first adhesive layer 20 close to the bending area 12. The orthographic projection of the second adhesive layer 30 on the bending portion 41 coincides with the orthographic projection of the bending area 12 of the display panel 10 on the bending portion 41. When the display panel 10, the polarizer 50 and the first adhesive layer 20 are attached to the cover plate 40, a gap is formed between the bending area 12 of the display panel 10 and the bending portion 41 of the cover plate 40. If the curvature of the bending portion 41 of the cover plate 40 is too large near the cut-off position of the first adhesive layer, the gap is formed under the action of the rigidity of the display panel 10. The second adhesive layer 30 is used to fill the gap, so the bending area 12 of the display panel 10 can be fixed on the cover plate 40 without rebound wrinkles. Part of the second adhesive layer 30 extends to the side of the first adhesive layer 20 close to the display panel 10. Further, part of the second adhesive layer 30 extends to the side of the first adhesive layer 20 close to the display panel 10 and is attached to the side wall of the polarizer 50. In this way, the second adhesive layer 30 completely fills the gap, effectively fixing the display panel 10 on the cover plate 40 without rebound wrinkles. Exemplarily, the thickness of the second adhesive layer 30 is between 20-300 μm.

[0060] Furthermore, since the bending area 12 of the display panel 10 needs to be bent during subsequent manufacturing, and the second adhesive layer 30 will affect the bending of the bending area 12, the second adhesive layer 30 must be removed after the display panel 10 and the cover plate 40 are bonded together. Therefore, the second adhesive layer 30 in this embodiment includes a variable viscosity adhesive layer, which can also be called a reduced viscosity adhesive layer, wherein the variable viscosity adhesive refers to an adhesive whose viscosity can change significantly with changes in a certain parameter of the external environment. That is, the second adhesive layer 30 has an adhesive state and a debonding state. The second adhesive layer 30 is removed by subsequently changing the adhesiveness of the second adhesive layer 30. Exemplarily, the material of the second adhesive layer 30 includes any one of UV debonding adhesive, low-temperature debonding adhesive, and high-temperature debonding adhesive. Specifically, when the material of the second adhesive layer 30 is UV debonding adhesive, the adhesiveness between the display panel 10 and the cover plate 40 is reduced by irradiating the second adhesive layer 30 with ultraviolet light; when the material of the second adhesive layer 30 is low-temperature debonding adhesive, the adhesiveness between the display panel 10 and the cover plate 40 is reduced by lowering the temperature of the second adhesive layer 30; when the material of the second adhesive layer 30 is high-temperature debonding adhesive (such as pressure-sensitive adhesive), the adhesiveness between the display panel 10 and the cover plate 40 is reduced by increasing the temperature of the second adhesive layer 30. Of course, the adhesiveness of the second adhesive layer 30 can also be reduced by adding a debonding agent.

[0061] In one embodiment, the display module further includes a third adhesive layer 60 , which is located between the second adhesive layer and the display panel and is located at the bending area 12 of the display panel 10 , and is used to protect the bending area 12 of the display panel 10 .

[0062] Exemplarily, the material of the third adhesive layer 60 includes optical adhesive

[0063] In one embodiment, the display module further includes a support film layer 70, which is located on the side of the display panel 10 away from the polarizer 50 (i.e., located on the backlight side B2 of the display panel 10), and the support film layer 70 can buffer the stress acting on the display panel 10, and can dissipate the heat generated when the display panel 10 is working, and has a certain protective effect on the display panel 10. Exemplarily, the support film layer 70 can be a composite film composed of grid glue, foam and copper foil, such as a super clean foam (SCF) composite film.

[0064] Exemplarily, the display module also includes a flexible circuit board, one end of which is bound and connected to the binding area 13. When the bending area 12 is in a bent state, the flexible circuit board is located on the backlight side B2 of the flexible display panel 102 and is connected to the side of the supporting film layer 70 away from the flexible display panel 10.

[0065] The display module further includes a support film, which is located on the backlight side B2 of the display panel 10.

[0066] refer to Figure 2-Figure 4 The second aspect of the present application also provides a method for manufacturing a display module, the method comprising the following steps:

[0067] S10: providing a display panel 10, the display panel 10 comprising a main body area 11 and a bending area 12 located at one side of the main body area 11, wherein the display panel 10 further comprises a binding area 13 located at a side of the bending area 12 away from the main body area 11; at this time, the display panel 10 is still in an unbent state;

[0068] S20: forming a first adhesive material on the light-emitting side B1 of the display panel 10, wherein the orthographic projection of the first adhesive material on the display panel 10 is located in the main area 11 and part of the bending area 12 of the display panel 10;

[0069] S30: forming a second adhesive material on the light emitting side B1 of the display panel 10 and at one end of the first adhesive material close to the bending area;

[0070] S40: providing a cover plate 40, and bonding the display panel 10 to the cover plate 40 through a first adhesive layer 20 and a second adhesive layer 30; wherein the cover plate 40 comprises a straight portion and a curved portion 41 surrounding at least a portion of the straight portion, and an orthographic projection of the second adhesive layer 30 on the curved portion 41 coincides with an orthographic projection of the bending area 12 of the display panel 10 on the curved portion 41;

[0071] S50: removing the second adhesive layer 30.

[0072] In the present embodiment, before the display panel and the cover plate are bonded together, a second adhesive layer material is provided to be connected to the bending area of ​​the display panel in an unbent state. When the display panel and the cover plate are bonded together, the display panel is effectively fixed on the cover plate without rebound wrinkles. At the same time, after the display panel and the cover plate are bonded together, the second adhesive layer 30 is removed to prevent the second adhesive layer 30 from affecting the padbending process of the display module at the back end.

[0073] In one embodiment, before the step of forming the first adhesive layer 20 on the light emitting side B1 of the display panel 10 , the method further includes:

[0074] S200: forming a polarizer 50 on the light-emitting side B1 of the display panel 10;

[0075] Furthermore, a first adhesive material is formed on a side of the polarizer 50 facing away from the display panel 10 , and the orthographic projection of the polarizer 50 on the display panel 10 is located within the orthographic projection range of the first adhesive layer 20 on the display panel 10 .

[0076] In one implementation, step S40 specifically includes:

[0077] Provide a cover plate 40, the cover plate 40 is located on a side of the first adhesive material and the second adhesive material away from the display panel 10;

[0078] The first adhesive material and the second adhesive material are cured to form a first adhesive layer 20 and a second adhesive layer 30 , so that the display panel 10 and the cover plate 40 are bonded together.

[0079] In one implementation, step S50 specifically includes:

[0080] S51: performing a debonding treatment on the second adhesive layer 30 to make the second adhesive layer 30 in a debonded state;

[0081] S52: peeling the second adhesive layer 30 from the display panel 10;

[0082] Furthermore, the viscosity reduction treatment in this step includes subjecting the second adhesive layer 30 to UV light, low temperature, high temperature or adding a debonding agent. Exemplarily, when the material of the second adhesive layer 30 is UV debonding adhesive, the viscosity between the display panel 10 and the cover plate 40 is reduced by irradiating the second adhesive layer 30 with ultraviolet light; when the material of the second adhesive layer 30 is low-temperature debonding adhesive, the viscosity between the display panel 10 and the cover plate 40 is reduced by lowering the temperature of the second adhesive layer 30; when the material of the second adhesive layer 30 is high-temperature debonding adhesive, the viscosity between the display panel 10 and the cover plate 40 is reduced by increasing the temperature of the second adhesive layer 30. Of course, the adhesion of the second adhesive layer 30 can also be reduced by adding a debonding agent.

[0083] Furthermore, after removing the second adhesive layer 30 , the bending area 12 is bent so that the binding area 13 of the display panel 10 is located at the backlight side B2 of the display panel 102 .

[0084] A third aspect of the present application further provides a display module, which includes a display module manufactured by the manufacturing method in any of the above embodiments.

[0085] It should be noted that the above describes some embodiments of the present disclosure. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recorded in the claims can be performed in an order different from that in the above embodiments and still achieve the desired results. In addition, the processes depicted in the accompanying drawings do not necessarily require the specific order or continuous order shown to achieve the desired results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0086] The embodiments of the present disclosure are intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the embodiments of the present disclosure should be included in the scope of protection of the present disclosure.

Claims

1. A display module, characterized in that: include: The display panel comprises a main body area and a bending area located at one side of the main body area; A first adhesive layer, located on the light emitting side of the display panel; A second adhesive layer, located on the light emitting side of the display panel and located at one end of the first adhesive layer close to the bending area; A cover plate is located on a side of the first adhesive layer and the second adhesive layer away from the display panel, the cover plate comprising a straight portion and a curved portion surrounding at least a portion of the straight portion, wherein an orthographic projection of the second adhesive layer on the curved portion coincides with an orthographic projection of the bending area of ​​the display panel on the curved portion.

2. The display module according to claim 1, wherein: The second adhesive layer includes a variable viscosity adhesive layer; Preferably, the material of the second adhesive layer includes any one of UV viscosity-reducing adhesive, low-temperature viscosity-reducing adhesive, and high-temperature viscosity-reducing adhesive; Preferably, the material of the first adhesive layer includes optical adhesive.

3. The display module according to claim 1, wherein: The thickness of the second adhesive layer is between 20-300 μm; Preferably, at least a portion of the second adhesive layer extends to a side of the first adhesive layer close to the display panel.

4. The display module according to claim 1, wherein: Also includes: A third adhesive layer, located between the second adhesive layer and the display panel, and the third adhesive layer is located in a bending area of ​​the display panel; Preferably, the material of the third adhesive layer includes optical adhesive.

5. The display module according to claim 1, wherein: Also includes: A polarizer, located between the first adhesive layer and the display panel; Preferably, the orthographic projection of the polarizer on the display panel is located within the orthographic projection range of the first adhesive layer on the display panel; Preferably, at least a portion of the second adhesive layer extends to a side of the first adhesive layer close to the display panel and is attached to an end of the polarizer close to the bending area; Preferably, the display module further comprises a supporting film, and the supporting film is located on a side of the display panel away from the polarizer.

6. A method for manufacturing a display module, characterized in that: The preparation method comprises the following steps: Providing a display panel, the display panel comprising a main body area and a bending area located on one side of the main body area; forming a first adhesive material on the light emitting side of the display panel; Forming a second adhesive material on the light emitting side of the display panel and at one end of the first adhesive material close to the bending area; A cover plate is provided, and the display panel is bonded to the cover plate by a first adhesive layer and a second adhesive layer, wherein the cover plate includes a straight portion and a curved portion surrounding at least a portion of the straight portion, wherein an orthographic projection of the second adhesive layer on the curved portion coincides with an orthographic projection of a bending area of ​​the display panel on the curved portion.

7. The method for manufacturing a display module according to claim 6, wherein: After the step of providing a cover plate and bonding the display panel to the cover plate through a first adhesive layer and a second adhesive layer, the step further includes: removing the second adhesive layer; Preferably, the step of removing the second adhesive layer includes: Performing a viscosity-reducing treatment on the second adhesive layer to form a debonded state; Peeling the second adhesive layer off the display panel; Preferably, the viscosity reduction treatment includes subjecting the second adhesive layer to UV light, low temperature, high temperature or adding a debonding agent.

8. The method for manufacturing a display module according to claim 6, wherein: The step of providing a cover plate and bonding the display panel to the cover plate through a first adhesive layer and a second adhesive layer comprises: Providing the cover plate, wherein the cover plate is located on a side of the first adhesive material and the second adhesive material away from the display panel; The first adhesive material and the second adhesive material are cured to form the first adhesive layer and the second adhesive layer, so that the display panel is attached to the cover plate.

9. The method for manufacturing a display module according to claim 6, It is characterized by: Before the step of forming a first adhesive layer on the light-emitting side of the display panel, the step further includes: forming a polarizer on the light-emitting side of the display panel; Preferably, a first adhesive layer is formed on a side of the polarizer facing away from the display panel.

10. A display module, characterized in that: Comprising a display module manufactured by the manufacturing method as described in any one of claims 6-9.

Citation Information

Patent Citations

  • Optical adhesive layer and display module

    CN112866461A

  • Display assembly and preparation method thereof

    CN114120814A

  • Adhesive material, display module and manufacturing method thereof

    CN114381209A

  • Display module, preparation method thereof and display device

    CN117135964A

  • Bearing structure of display module

    CN117775481A