Display module, manufacturing method thereof, and electronic device

Abstract

The application provides a display module, a preparation method and an electronic device. The display module comprises a display area and a non-display area connected with the display area, and further comprises a display panel and a protective layer. The display panel comprises a display part located in the display area and a bending part located in the non-display area; the protective layer is arranged on one side of the display panel and located in the non-display area, and comprises at least one buffer structure, the buffer structure comprising at least two fixed parts and a deformation part connecting the adjacent two fixed parts. The elastic stretching body of the buffer structure is designed in the protective layer to disperse the bending stress generated when bending.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of display, in particular to the display module structure design technology in the technical field of display, and particularly relates to a display module, a preparation method and an electronic device. BACKGROUND

[0002] At present, in the display module bending process, the flexible circuit board needs to be bent upward by adsorbing part of the area, so that the flexible circuit board is finally attached to the surface of the composite tape. In the bending process, the twisted wire of the flat cable layer and the protective glue for bending protection of the display panel will be bent along with the bending of the module.

[0003] The protective glue will have a large deformation from the plane to the bending. At present, the length of the protective glue is extended in the initial state without bending, so as to ensure that the glue can cover the twisted wire. However, this method will cause the problem of too large lower frame of the display module and the reduction of the display area. It is necessary to improve the structure of the display module, expand the display area and improve the screen ratio of the display module. SUMMARY

[0004] The purpose of the present application is to provide a display module, a preparation method and an electronic device. To solve the problem of display panel avoidance, display area reduction and one side (lower side) frame of the display module caused by the extension of the length of the protective glue in the prior art.

[0005] To achieve the above purpose, in a first aspect, the present application provides a display module, comprising a display area and a non-display area connected with the display area, further comprising:

[0006] a display panel, the display panel comprising a display part and a bending part, the display part being located in the display area, and the bending part being located in the non-display area;

[0007] a protective layer, the protective layer being arranged on one side of the display panel and located in the non-display area, comprising at least one buffer structure, the buffer structure comprising at least one elastic tensile body, the elastic tensile body being stretched to disperse the bending stress generated when bending, and the stretching length caused by bending being dispersed, so that the protective glue layer is more stable when bending. Therefore, in this scheme, the length of the protective glue does not need to be extended, the display panel does not need to be avoided, so that the display area of the display panel can be extended to the edge part, the screen ratio of the display area of the display panel is improved, the frame is reduced, and the display area of the module is increased.

[0008] Further, the elastic stretch body comprises a chain-like gel structure, the chain-like gel structure comprises at least two fixed parts, a buffer zone is arranged between two adjacent fixed parts, and a deformation part is arranged in the buffer zone; in the chain-like gel structure, a plurality of fixed parts are arranged side by side to form a gel layer, a buffer zone is left between two adjacent fixed parts, and a deformation part is arranged in the buffer zone; when the protection layer is bent, the deformation part in the buffer zone is stretched, so as to disperse the bending stress when bending.

[0009] Further, the deformation part in the buffer zone is connected with two adjacent fixed parts respectively to form a chain-like gel structure in series.

[0010] Optionally, the elastic stretch body comprises one or more chain-like gel structures arranged side by side and / or in parallel.

[0011] Further, the deformation part comprises a first stretch part and a second stretch part arranged in cross with the first stretch part; the deformation part can adopt a stretch part in X-shaped structure formed by two intersections; when the module is bent, the X-shaped structure deformation part between two fixed parts can increase the included angle between the two stretch parts, so as to disperse the bending stress when bending and the stretching length caused by bending.

[0012] Further, the deformation part comprises a third stretch part, and the third stretch part comprises a V-shaped structure or a U-shaped structure or an S-shaped structure; the deformation part can also adopt a single stretch part; when the module is bent, the single third stretch part is stretched to disperse the bending stress when bending.

[0013] Further, the elastic stretch body comprises a spring-like gel structure, the spring-like gel structure comprises a first fixed part, a second fixed part and a deformation part between the first fixed part and the second fixed part; the elastic stretch body adopting the spring-like gel structure, the deformation part between the first fixed part and the second fixed part can be stretched to disperse the bending stress when bending.

[0014] Optionally, the elastic stretch body comprises one or more spring-like gel structures arranged side by side and / or in parallel.

[0015] Further, the shape of the deformation part comprises a zigzag shape or a wave shape.

[0016] Optionally, the deformation part is a continuous zigzag shape or a zigzag shape with one or more disconnected positions in the middle.

[0017] Optionally, the deformation part is a continuous wave shape or a wave shape with one or more disconnected positions in the middle.

[0018] Optionally, the deformation part is a combination of a continuous zigzag shape and a wave shape or a combination of a zigzag shape with one or more disconnected positions in the middle and a wave shape.

[0019] Further, in a direction perpendicular to the plane where the display portion is located, a vertical projection plane of the protective layer coincides with a vertical projection plane of the bending portion, and the vertical projection plane of the protective layer is located outside the range of the display portion. Preferably, in the direction perpendicular to the plane where the display portion is located, the interval between the end of the vertical projection plane of the protective layer close to the side of the display portion and the end of the display portion close to the side of the bending portion is equal to 0.

[0020] In a second aspect, the present application further provides a preparation method of a display module, the display module comprising a display area and a non-display area connected with the display area, the preparation method comprising:

[0021] providing a display panel, the display panel comprising a display portion and a bending portion, the display portion being located in the display area, and the bending portion being located in the non-display area;

[0022] forming a protective layer in the non-display area on one side of the display panel, wherein the protective layer comprises at least one buffer structure, which disperses the bending stress of the protective layer when bending.

[0023] In a third aspect, the present application further provides an electronic device, such as the display module described above.

[0024] As can be seen from the above solutions, the present application provides a display module, a preparation method thereof, and an electronic device thereof, wherein the problems of the display area reduction, the oversized side (lower) frame of the display module caused by the display panel avoidance due to the lengthening of the protective glue during the bending process are solved by improving the structure of the protective layer, adopting a protective layer with a buffer structure, and using the elastic stretching body in the buffer structure to disperse the bending stress generated during bending by stretching, and dispersing the stretching length caused by bending, so that the protective glue layer is more stable during bending. Under the premise of ensuring that the protective layer can completely cover the bending portion of the display panel and preventing the protective glue layer from peeling off during bending, the protective layer with a buffer structure is different from the traditional protective glue layer, and the projection plane of the protective layer can coincide with the bending portion of the display panel in structure, without the need to lengthen the protective glue, so that the display area of the display panel does not need to be avoided, the display area edge portion can be extended to the end of the projection plane of the bending portion and the protective layer, the display area of the display module is further enlarged, the frame of the display module is narrowed, the displayable area of the display module is increased, the screen-to-body ratio of the display module is improved, and the technical problems of the display panel avoidance, the display area reduction, and the oversized lower frame caused by the lengthening of the protective glue in the prior art are effectively solved. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to make the technical solutions in the embodiments of the present application clearer, the accompanying drawings needed in the embodiment description will be briefly introduced. Obviously, the accompanying drawings in the following description are only some embodiments of the present application, and other accompanying drawings can be obtained by those skilled in the art without any creative effort on the basis of these accompanying drawings.

[0026] Figure 1 A traditional protective glue bending shape diagram in the display module of the present application.

[0027] Figure 2 A traditional protective glue distribution structure diagram in the display module of the present application.

[0028] Figure 3 A new protective glue distribution structure diagram in the display module of the present application.

[0029] Figure 4 A chain type glue structure diagram provided by one embodiment of the present application.

[0030] Figure 5 A chain type glue structure diagram provided by one embodiment of the present application.

[0031] Figure 6 A chain type glue structure diagram provided by another embodiment of the present application.

[0032] Figure 7 A chain type glue structure diagram provided by another embodiment of the present application.

[0033] Figure 8 A chain type glue structure diagram provided by another embodiment of the present application.

[0034] Figure 9 A spring type glue structure diagram provided by one embodiment of the present application.

[0035] Figure 10 A spring type glue structure diagram provided by another embodiment of the present application.

[0036] Figure 11 A display module preparation method flowchart provided by one embodiment of the present application.

[0037] The components in the figure are shown as follows:

[0038] 1, display module; AA, display area; NA, non-display area;

[0039] 2, display panel; 21, display area; 22, bending part;

[0040] 3, protective layer; 31, buffer structure

[0041] 10, chain type gel structure; 101, fixed part; 102, deformed part; 1021, first stretching part; 1022, second stretching part; 1023, third stretching part;

[0042] 20, spring type gel structure; 201, first fixed part; 202, second fixed part; 203, deformed part. DETAILED DESCRIPTION

[0043] The preferred embodiments of the present application will be described herein below with reference to the accompanying drawings, of which the preferred embodiments of the present application can be completely introduced to those skilled in the art, and the technical contents of the present application can be made more clear and convenient to understand. The present application can be embodied in many different forms of the present application, and the scope of protection of the present application is not limited to the embodiments mentioned herein.

[0044] In the drawings, the same components are designated by the same reference numerals, and components having the same structure or function are designated by similar reference numerals. The size and thickness of each component shown in the drawings are arbitrarily shown, and the present application is not limited to the size and thickness of each component. In order to make the drawing clearer, the thickness of some components is appropriately exaggerated in some places in the drawing.

[0045] In addition, the following description of the embodiments of the present application is made with reference to the accompanying drawings, which illustrate specific embodiments of the present application that can be used to implement the present application. The directional terms mentioned in the present application, such as "upper", "lower", "front", "rear", "left", "right", "inner", "outer", "side" and the like, are only with reference to the direction of the accompanying drawings, and therefore, the directional terms used are for better, clearer and more convenient description and understanding of the present application, and are not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" and the like are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0046] When certain components are described as "on" another component, the components can be directly placed on the other component; or there can be an intermediate component, and the components are placed on the intermediate component, and the intermediate component is placed on the other component. When a component is described as "mounted to" or "connected to" another component, it can be understood as being directly "mounted" or "connected", or the component is indirectly "mounted to" or "connected to" the other component through an intermediate component.

[0047] SUMMARY

[0048] As described in the background art, the display module is bent during the bending process, such as Figure 1As shown, the bending part 22 (the wire is arranged in the bending part 22) and the protective layer 3 will be bent along with the bending of the display module 1, and finally become a C-shaped structure; because the protective layer is deformed from a plane to a C-shaped structure, a large deformation will be caused, in order to ensure that the protective layer 3 can completely cover the bending part 22 (the wire is arranged in the bending part 22) and prevent the protective layer 3 from peeling off during the bending, the length of the protective layer 3 is currently extended in the initial state without bending, as shown in the figure. Figure 2 As shown, the extension part of the protective layer 3 is a and b, and this method will cause the display panel 2 on the left side of b to avoid the protective layer 3 to the left, thereby causing the display area of the display module to be reduced, and the lower frame to be too large.

[0049] In order to ensure that the protective layer can completely cover the bending part 22 (the wire is arranged in the bending part 22) and prevent the protective layer from peeling off during the bending, and to realize the increase of the display area of the display module and the narrow frame effect of the display module, the inventors propose a scheme for optimizing the structure of the display module, improve the internal structure layout of the display module and the structure of the protective layer for bending protection, adopt a bending protective layer with a buffer structure 31, and the elastic stretching body in the buffer structure 31 can disperse the bending stress generated during the bending by stretching, and disperse the stretching length caused by the bending, so that the protective layer is more stable during the bending. deformation; under the premise of ensuring that the protective layer can completely cover the bending part 22 (the wire is arranged in the bending part 22) and prevent the protective layer from peeling off during the bending, the protective layer with the buffer structure 31 is different from the traditional protective layer, which can completely cover the bending part 22 (the wire is arranged in the bending part 22) after bending in structure, without the need to extend the length of the protective layer 2, so that the display panel does not need to avoid, and the edge part of the display part 21 can extend to the end of the vertical projection surface of the overlapping part of the bending part 22 and the protective layer 3, further expanding the display area of the display module, narrowing the frame of the display module, increasing the displayable area of the display module, and improving the screen ratio of the display module. The technical problems of the prior art caused by the extension of the protective layer, such as the display panel avoiding, the display area being reduced, and the lower frame being too large, are effectively solved.

[0050] Based on the above idea, the present application will be described below with reference to the accompanying drawings.

[0051] Exemplary device:

[0052] In the embodiment of the present application, a display module 1 is provided, as shown in the figure. Figure 3 As shown, the display module 1 comprises a display area AA and a non-display area NA connected with the display area AA,

[0053] Further comprising a display panel 2, the display panel 2 comprises a display part 21 and a bending part 22, the display part 21 is located in the display area AA, and the bending part 22 is located in the non-display area NA.

[0054] The protection layer 3 is arranged on one side of the display panel 2 and located in the non-display area NA. The protection layer 3 includes a buffer structure 31, a projection of which on the display panel 2 is located on the bending part 22, and an edge part of the display part 21 can extend to an end of a vertical projection plane of the bending part 22. The buffer structure includes at least two fixed parts 101 and a deformation part 102 connecting two adjacent fixed parts 101. The fixed part 101 is fixed on the bending part 22 of the display panel 2 and is used to protect the bending part 22 of the display panel 2. The deformation part 102 has a deformation capacity and is used to relieve the stress generated during the release of the protection layer 3 during the bending process. In a direction perpendicular to the plane on which the display part 21 is located, the vertical projection plane of the protection layer 3 coincides with the vertical projection plane of the bending part 22, and the vertical projection plane of the protection layer 3 is located outside the range of the display part 21. In addition, the distance between the end of the vertical projection plane of the protection layer 3 close to the side of the display part 21 and the end of the display part 21 close to the side of the bending part 22 is equal to 0, that is, the end of the protection layer 3 is aligned with the end of the display part 21.

[0055] Further described, the buffer structure 31 includes an elastic stretching body, which can stretch to disperse the bending stress generated during bending and disperse the stretching length caused by bending, so that the protective adhesive layer is more stable during bending.

[0056] Therefore, in this scheme, the length of the protection layer 3 does not need to be extended, and the display part 21 of the display panel 2 does not need to be avoided, thereby making the display part 21 of the display panel 2 extend to the edge part, improving the screen ratio of the display part 21 of the display panel 2, reducing the frame, and increasing the display area of the module.

[0057] In some embodiments, the elastic stretching body includes a chain-like adhesive structure 10, as shown in Figure 4 The chain-like adhesive structure 10 includes at least two fixed parts 101, and a buffer zone is arranged between two adjacent fixed parts 101, and a deformation part 102 is arranged in the buffer zone;

[0058] Further described, the deformation part 102 in the buffer zone is connected to its two adjacent fixed parts 101 to form a chain-like adhesive structure 10 in series;

[0059] Optionally, the elastic stretching body includes one or more chain-like adhesive structures 10 arranged side by side and / or in parallel;

[0060] The single chain-like colloid structure 10 can form the protective layer 3, or multiple chain-like colloid structures 10 can be arranged in parallel to form the protective layer 3, or multiple chain-like colloid structures 10 can be arranged side by side to form the protective layer 3, or multiple chain-like colloid structures 10 can be arranged in multiple rows and multiple columns to form the protective layer 3, or multiple chain-like colloid structures 10 can be irregularly combined to form the protective layer 3.

[0061] Further described, the deformation part 102 includes a first stretching part 1021 and a second stretching part 1022 arranged in cross with the first stretching part 1021.

[0062] The deformation part 102 can adopt two stretching parts arranged in cross in an X-shaped structure. When the bending part 22 of the display panel 2 is bent, the X-shaped structure of the deformation part 102 between the two fixed parts 101 is enlarged in the X-shaped angle (which changes the cross angle between the first stretching part 1021 and the second stretching part 1022), Figure 5 As shown, it is the flattened state of the chain-like colloid structure 10 after bending. It can be seen that the deformation part 102 of the X-shaped structure in the middle has been stretched, and the overall length of the chain-like colloid structure 10 is lengthened, thereby dispersing the bending stress when bending and the stretching length caused by bending.

[0063] In some embodiments, the chain-like colloid structure 10 includes at least two fixed blocks 101 and a deformation part 102, and the deformation part 102 includes a third stretching part 1023.

[0064] Unlike the two stretching parts arranged in cross, the deformation part 102 can also adopt a single third stretching part 1023. When the module is bent, the third stretching part 1023 is stretched to disperse the bending stress when bending.

[0065] Optionally, as shown in the figure, Figure 6 The third stretching part 1023 can adopt a V-shaped structure.

[0066] Optionally, as shown in the figure, Figure 7 The third stretching part 1023 can adopt a U-shaped structure.

[0067] Optionally, as shown in the figure, Figure 8 The third stretching part 1023 can adopt an S-shaped structure.

[0068] It should be noted that the stretching part in the above-mentioned deformation part 102 includes an X-shaped structure, a V-shaped structure, a U-shaped structure, and an S-shaped structure, but is not limited thereto. The stretching part can also be other shapes that can achieve the same or similar functions.

[0069] It should be noted that, in the buffer zone between the two adjacent fixed parts 101, in addition to the solid deformation part 102, the buffer zone is also filled with liquid glue to ensure that there is no gap in the glue layer. The filling of liquid glue will not affect the stretching of the deformation part 102.

[0070] In some embodiments, the elastic stretching body can replace the chain-shaped glue structure 10 in the protective layer 3 with a spring-shaped glue structure 20, which includes a first fixed part 201, a second fixed part 202, and a deformation part 203 connecting the first fixed part 201 and the second fixed part 202.

[0071] The deformation part 203 between the first fixed part 201 and the second fixed part 202 of the spring-shaped glue structure 20 can be stretched when bending to disperse the bending stress when bending.

[0072] Optionally, the elastic stretching body includes one or more spring-shaped glue structures 20 arranged side by side and / or in parallel.

[0073] The protective layer 3 can be formed by a single spring-shaped glue structure 20, or by multiple spring-shaped glue structures 20 arranged in parallel, or by multiple spring-shaped glue structures 20 arranged side by side, or by multiple spring-shaped glue structures 20 arranged in multiple rows and columns, or by multiple spring-shaped glue structures 20 arranged in an irregular manner.

[0074] Further description, the shape of the deformation part 203 includes a zigzag shape or a wave shape.

[0075] Optionally, the deformation part 203 is a continuous zigzag shape (as shown in Figure 9 Optionally, the deformation part 203 is a continuous zigzag shape (as shown in

[0076] Optionally, the deformation part 203 is a continuous wave shape (as shown in Figure 10 Optionally, the deformation part 203 is a continuous wave shape (as shown in

[0077] Optionally, the deformation part 203 is a continuous zigzag shape and a wave shape combined shape or a zigzag shape and a wave shape combined shape with one or more disconnected parts in between.

[0078] It should be noted that, in the above, the deformation part 203 includes a zigzag structure (continuous or disconnected), a wave structure (continuous or disconnected), and a combination of zigzag and wave shapes (continuous or disconnected) with elastic and stretchable properties, but is not limited thereto. The deformation part 203 can also be other shapes that can achieve the same or similar functions.

[0079] It should be noted that the space vacated in the solid deformation part 203 needs to be filled with liquid adhesive to ensure that there are no gaps in the adhesive layer.

[0080] Exemplary method:

[0081] This invention also provides a method for manufacturing a display module, wherein the display module 1 includes a display area AA and a non-display area NA connected to the display area AA, such as... Figure 11 As shown, the method for manufacturing the display module includes:

[0082] S1: Provide a display panel 2, the display panel 2 including a display part 21 and a bending part 22, wherein the display part 21 is located in the display area AA, and the bending part 22 is located in the non-display area NA;

[0083] S2: A protective layer 3 is formed on one side of the bent portion 22 of the display panel 2 in the non-display area NA, wherein the protective layer 3 includes at least one buffer structure 31, the buffer structure 31 including at least one elastic tension body, the elastic tension body being stretched during bending to disperse the bending stress generated during bending.

[0084] S3: Make the vertical projection surface of the formed protective layer 3 in the direction perpendicular to the plane where the display part 21 is located coincide with the vertical projection surface of the bent part 22 in the direction perpendicular to the plane where the display part 21 is located, and align the end of the protective layer 3 near the display part 21 with the end of the display part 21 near the bent part 22.

[0085] During bending, the elastic tension body in the buffer structure 31 can be stretched to disperse the bending stress and the stretching length caused by bending. Therefore, when setting the module bending protective adhesive, it is not necessary to extend the length of the ends of the protective adhesive. The display part 21 of the display panel 2 does not need to avoid it. The display edge of the display panel 2 extends to the end of the vertical projection surface where the protective layer 3 overlaps with the bent part 22 (which has a twisted wire).

[0086] This increases the size of the display section 21 of the module and narrows the bezel, thereby effectively ensuring the product quality of the display module after bending.

[0087] It should be noted that, in the above embodiments, except for the use of an adhesive layer with a buffer structure 31 as a protective adhesive for bending the display module, the other steps in the bending process of the display module are the same as in the conventional method.

[0088] Exemplary electronic device:

[0089] This invention also provides an electronic device, which includes the display module of any of the above embodiments.

[0090] While the application has been described with reference to particular embodiments, it is to be understood that the application is not limited to the particulars disclosed. Many modifications, variations, and applications of the application will be apparent to those skilled in the art without departing from the spirit and scope of the application as defined in the appended claims. It is therefore intended to cover all modifications and alterations that come within the scope and spirit of the application. It should be understood that all connections disclosed in the specification and drawings are exemplary. Other means of making the connections can be used and are apparent to those skilled in the art.

Claims

1. A display module, characterized by The display module comprises a display area and a non-display area connected with the display area. The display module further comprises: a display panel comprising a display part and a bending part, the display part being located in the display area, and the bending part being located in the non-display area; a protective layer provided on one side of the display panel and located in the non-display area, the protective layer comprising at least one buffer structure, the buffer structure comprising at least one elastic tensile body, the elastic tensile body comprising: a chain-like gel structure comprising at least two fixed parts, a buffer zone being provided between two adjacent fixed parts, and a deformation part being provided in the buffer zone, or, a spring-like gel structure comprising a first fixed part, a second fixed part, and a deformation part located between the first fixed part and the second fixed part; the elastic tensile body disperses the bending stress generated when it is bent by stretching.

2. The display module of claim 1, wherein the deformation parts in the buffer zone are connected to the two adjacent fixed parts respectively to form a chain-like gel structure in series.

3. The display module of claim 1, wherein the elastic tensile body comprises one or more chain-like gel structures arranged side by side and / or in parallel.

4. The display module of claim 1, wherein the deformation part comprises: a first tensile part, a second tensile part arranged transversely to the first tensile part.

5. The display module of claim 1, wherein the deformation part comprises: a third tensile part, the third tensile part comprising a V-shaped structure, a U-shaped structure, or an S-shaped structure.

6. The display module of claim 1, wherein the elastic tensile body comprises one or more spring-like gel structures arranged side by side and / or in parallel.

7. The display module of claim 1, wherein the shape of the deformation part comprises a zigzag shape or a wave shape.

8. The display module of claim 7, wherein the deformation part is a continuous zigzag shape or a zigzag shape with one or more disconnected parts in the middle; or, the deformation part is a continuous wave shape or a wave shape with one or more disconnected parts in the middle; or, the deformation part is a combination of a continuous zigzag shape and a wave shape or a combination of a zigzag shape with one or more disconnected parts in the middle and a wave shape.

9. The display module of claim 1, wherein in a direction perpendicular to the plane where the display part is located, the vertical projection plane of the protective layer coincides with the vertical projection plane of the bending part, and the vertical projection plane of the protective layer is located outside the range of the display part.

10. The display module of claim 9, wherein in a direction perpendicular to the plane where the display part is located, the distance between the end of the protective layer near the side of the display part and the end of the display part near the side of the bending part is equal to 0.

11. A method of manufacturing the display module according to any one of claims 1 to 10, characterized by, The display module comprises a display area and a non-display area connected with the display area. The preparation method comprises: A display panel is provided, which includes a display part and a bending part, the display part is located in the display area, and the bending part is located in the non-display area. A protective layer is formed on one side of the display panel and located in the non-display area, and the protective layer includes at least one buffer structure, and the buffer structure includes at least one elastic tensile body, which is stretched to disperse the bending stress generated when the elastic tensile body is bent.

12. An electronic device, comprising the display module according to any one of claims 1-10. ​

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