Display module, preparation method and electronic equipment thereof

Abstract

The invention provides a display module, a preparation method and electronic equipment thereof. 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, and the buffer structure comprises at least two fixing parts and deformation parts connected with the two adjacent fixing parts. According to the scheme, the elastic stretching body of the buffer structure is designed in the protective layer to disperse bending stress generated during bending.

Description

Technical Field

[0001] The present invention relates to the field of display technology, in particular to display module structure design technology under the field of display technology, and in particular to a display module, a preparation method and an electronic device thereof. Background Art

[0002] At present, in the bending process of the display module, it is necessary to bend upward by adsorbing part of the flexible circuit board, which will eventually make the flexible circuit board stick to the surface of the composite tape. During the bending process, the twisted wires of the wiring layer and the protective glue used to bend and protect the display panel will bend as the module is bent.

[0003] The protective glue will undergo a significant deformation from a flat surface to a bent surface. At this stage, the length of the protective glue will be extended in the initial unbent state to ensure that the colloid can cover the twisted wire. However, this method will cause technical problems such as the lower frame of the display module being too large and the display area being reduced. It is necessary to improve the structure of the display module, expand the display area, and increase the screen-to-body ratio of the display module. Summary of the invention

[0004] The purpose of the present invention is to provide a display module, a preparation method and an electronic device thereof, so as to solve the problems in the prior art of display panel avoidance caused by extending the length of the protective glue, a reduced display area of ​​the display module and an overly large frame on one side (lower side).

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

[0006] A display panel, the display panel comprising a display portion and a bending portion, the display portion is located in the display area, and the bending portion is located in the non-display area;

[0007] A protective layer is arranged on one side of the display panel and located in the non-display area, and includes at least one buffer structure, and the buffer structure includes at least one elastic stretching body, and the elastic stretching body is stretched when being bent to disperse the bending stress generated when it is bent, and disperses the stretching length caused by the bending, so that the protective glue layer is more stably deformed when bending; therefore, in this scheme, there is no need to extend the length of the protective glue, and the display panel does not need to be avoided, so that the display area of ​​the display panel can be extended to the edge, thereby increasing the screen-to-body ratio of the display area of ​​the display panel, reducing the frame, and increasing the module display area.

[0008] Furthermore, the elastic stretching body includes a chain-type colloid structure, which includes at least two fixed parts, a buffer zone is provided between two adjacent fixed parts, and a deformation part is provided in the buffer zone; in the chain-type colloid structure, a plurality of fixed parts are arranged side by side to form a glue layer, a buffer zone is left between two adjacent fixed parts, and a deformation part is provided in the buffer zone, and when the protective layer is bent, the deformation part in the buffer zone is stretched, thereby dispersing the bending stress during bending.

[0009] Furthermore, the deformable parts in the buffer zone are respectively connected to two adjacent fixed parts to form a chain colloid structure in series;

[0010] Optionally, the elastic stretching body includes one or more side-by-side and / or parallel chain colloid structures.

[0011] Furthermore, the deformable portion includes a first stretching portion and a second stretching portion arranged crosswise with the first stretching portion; the deformable portion can adopt two stretching portions intersecting in an X-shaped structure. When the module is bent, the X-shaped structural deformable portion between the two fixed portions will increase the angle between the two stretching portions, thereby dispersing the bending stress during bending and dispersing the stretching length caused by bending.

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

[0013] Furthermore, the elastic stretching body includes a spring-type colloid structure, which includes a first fixed part, a second fixed part and a deformation part located between the first fixed part and the second fixed part; in the elastic stretching body with a spring-type colloid structure, the deformation part between the first fixed part and the second fixed part can be stretched during bending to disperse the bending stress during bending.

[0014] Optionally, the elastic stretching body comprises one or more spring-type colloid structures arranged side by side and / or in parallel;

[0015] Further, the shape of the deformation portion includes a sawtooth shape or a wave shape;

[0016] Optionally, the deformation portion is a continuous sawtooth shape or a sawtooth shape with one or more disconnected parts in the middle;

[0017] Optionally, the deformation portion is in a continuous wave shape or a wave shape with one or more disconnected parts in the middle;

[0018] Optionally, the deformation portion is a shape that is a combination of a continuous sawtooth shape and a wave shape, or a shape that is a combination of a sawtooth shape and a wave shape with one or more disconnected portions in the middle.

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

[0020] In a second aspect, the present invention further provides a method for preparing a display module, wherein the display module comprises a display area and a non-display area connected to the display area, and the preparation method comprises:

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

[0022] A protection layer is formed on one side of the display panel and located in the non-display area, wherein the protection layer includes at least one buffer structure, and the buffer structure disperses the bending stress of the protection layer when the protection layer is bent.

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

[0024] It can be seen from the above scheme that the present application provides a display module, a preparation method and an electronic device thereof, wherein the display panel avoidance caused by the need to extend the length of the protective glue during the bending process, the display area of ​​the display module is reduced, and the frame on one side (lower side) is too large. By improving the structure of the protective layer colloid, a protective layer with a buffer structure is adopted. When the display module is bent, the elastic stretching body in the buffer structure can disperse the bending stress generated during bending by stretching, disperse the stretching length caused by bending, and make the protective glue layer more stably deformed during bending; while ensuring that the protective layer can completely cover the bent portion of the display panel and prevent bending. Under the premise that the protective glue layer peels off, the protective layer with a buffer structure is different from the traditional protective glue layer. Structurally, the projection surface of the protective layer can overlap with the bent portion of the display panel, without extending the length of the protective glue, so that the screen body in the display area does not need to be avoided, and the edge of the display area can extend to the end of the projection surface where the bent portion and the protective layer overlap, 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-to-body ratio of the display module, effectively solving the technical problems of display panel avoidance, reduced display area, and excessive lower frame caused by extending the length of the protective glue in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0026] Figure 1 This is a diagram of the morphology of the conventional protective adhesive in the display module of the present invention after being bent.

[0027] Figure 2 This is a diagram showing the distribution structure of the conventional protective glue in the display module of the present invention.

[0028] Figure 3 This is a diagram showing the distribution structure of the new protective glue in the display module of the present invention.

[0029] Figure 4 A chain colloid structure diagram provided for one embodiment of the present invention.

[0030] Figure 5 A diagram of a chain-type colloid structure in a flattened state after being bent, provided in one embodiment of the present invention.

[0031] Figure 6 A chain colloid structure diagram provided for another embodiment of the present invention.

[0032] Figure 7 A chain colloid structure diagram provided for yet another embodiment of the present invention.

[0033] Figure 8 A chain colloid structure diagram provided for yet another embodiment of the present invention.

[0034] Fig. 9 A diagram of a spring-type colloid structure provided in one embodiment of the present invention.

[0035] Fig.10 A diagram of a spring-type colloid structure provided in another embodiment of the present invention.

[0036] Fig.11 A flow chart of a method for preparing a display module provided in one embodiment of the present invention.

[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 portion;

[0040] 3. Protective layer; 31. Buffer structure

[0041] 10. Chain colloid structure; 101. Fixing part; 102. Deformation part; 1021. First stretching part; 1022. Second stretching part; 1023. Third stretching part;

[0042] 20. Spring type colloid structure; 201. First fixing part; 202. Second fixing part; 203. Deformation part. DETAILED DESCRIPTION

[0043] The preferred embodiments of the present invention are described below with reference to the drawings in the specification to prove that the present invention can be implemented. The embodiments of the invention can fully introduce the present invention to those skilled in the art, making its technical content clearer and easier to understand. The present invention can be embodied through many different forms of embodiments of the invention, and the protection scope of the present invention is not limited to the embodiments mentioned in the text.

[0044] In the drawings, components with the same structure are indicated by the same numerical reference numerals, and components with similar structures or functions are indicated by similar numerical reference numerals. The size and thickness of each component shown in the drawings are arbitrarily shown, and the present invention does not limit the size and thickness of each component. In order to make the illustration clearer, the thickness of the components is appropriately exaggerated in some places in the drawings.

[0045] In addition, the following descriptions of the various embodiments of the invention are made with reference to the attached diagrams to illustrate specific embodiments of the invention that the present invention can be implemented with. The directional terms mentioned in the present invention, such as "upper", "lower", "front", "back", "left", "right", "inner", "outer", "side", etc., are only with reference to the directions of the attached drawings. Therefore, the directional terms used are for better and clearer description and understanding of the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0046] When some components are described as being "on" another component, the component may be directly placed on the other component; there may also be an intermediate component on which the component is placed, and the intermediate component is placed on the other component. When a component is described as being "mounted on" or "connected to" another component, the two may be understood to be directly "mounted on" or "connected", or one component may be indirectly "mounted on" or "connected to" another component via an intermediate component.

[0047] Overview

[0048] As described in the background art, during the bending process of the display module, Figure 1As shown, the bending portion 22 (the bending portion 22 is provided with a twisted wire) and the protective layer 3 will bend along with the bending of the display module 1, and will eventually become a C-shape; because the protective glue will have a large deformation from the plane to the C-shape, in order to ensure that the protective layer 3 can completely cover the bending portion 22 (the bending portion 22 is provided with a twisted wire) and prevent the protective layer 3 from peeling off during bending, the length of the protective layer 3 is currently extended in the initial state without bending, such as Figure 2 As shown, the extended parts of the protection layer 3 are a and b. This method will cause the display panel 2 located on the left side of b to avoid the protection 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 increase the display area of ​​the display module and achieve a narrow frame effect of the display module under the premise of ensuring that the protective layer can completely cover the bending portion 22 (the bending portion 22 is provided with a twisted wire) and preventing the protective layer from peeling off during bending, the inventors proposed a solution to optimize the display module structure, improve the internal structure layout of the display module and the protective layer structure for bending protection, and adopt a bending protective layer with a buffer structure 31. When the display module is bent, the elastic stretching body in the buffer structure 31 can disperse the bending stress generated during bending by stretching, disperse the stretching length caused by bending, and make the protective layer more stable when bending. Deformation; ensure that the protective glue can completely cover the bending portion 22 (the bending portion 22 is provided with a twisted wire) and prevent the protective layer from peeling off during bending. Under the premise of preventing the protective layer from peeling off when bending, the protective colloid with a buffer structure 31 is different from the traditional protective glue, and the structure can make the protective layer 3 completely cover the bending portion 22 (the bending portion 22 is provided with a twisted wire) after bending, without extending the length of the protective layer 2, so that the display panel does not need to avoid, and the edge of the display portion 21 can extend to the end of the vertical projection surface where the bending portion 22 and the protective layer 3 overlap, 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-to-body ratio of the display module, effectively solving the technical problems of display panel avoidance, display area reduction, and excessive lower frame caused by extending the length of the protective glue in the prior art.

[0050] Based on the above concept, the present application will be exemplarily described below in conjunction with the accompanying drawings.

[0051] Exemplary devices:

[0052] In an embodiment of the present invention, a display module 1 is provided, such as Figure 3 As shown, the display module 1 includes a display area AA and a non-display area NA connected to the display area AA.

[0053] The display panel 2 includes a display portion 21 and a bending portion 22, wherein the display portion 21 is located in the display area AA, and the bending portion 22 is located in the non-display area NA;

[0054] It also includes a protective layer 3, which is arranged on one side of the display panel 2 and is located in the non-display area NA. The protective layer 3 includes a buffer structure 31, and the positive projection of the buffer structure 31 on the display panel 2 is located on the bending portion 22, and the edge of the display portion 21 can extend to the end of the vertical projection plane of the bending portion 22. The buffer structure includes at least two fixed portions 101 and a deformation portion 102 connecting two adjacent fixed portions 101. The fixed portion 101 is fixed on the bending portion 22 of the display panel 2, and is used to protect the bending portion 22 of the display panel 2. The deformation portion 102 has a deformation ability, which is used to relieve and release the stress generated by the protective layer 3 during the bending process. Among them, in the direction perpendicular to the plane where the display portion 21 is located, the vertical projection plane of the protective layer 3 coincides with the vertical projection plane of the bending portion 22, and the vertical projection plane of the protective layer 3 is located outside the range of the display portion 21. Furthermore, the distance between the end of the vertical projection surface of the protection layer 3 close to the display part 21 and the end of the display part 21 close to 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 be stretched when bending to disperse the bending stress generated when bending, disperse the stretching length caused by bending, and make the protective rubber layer more stably deformed when bending;

[0056] Therefore, in this solution, there is no need to extend the length of the protective layer 3, and the display part 21 of the display panel 2 does not need to be avoided, so that the display part 21 of the display panel 2 can be extended to the edge, thereby increasing the screen ratio of the display part 21 of the display panel 2, reducing the frame, and increasing the module display area.

[0057] In some embodiments, the elastic stretching body includes a chain colloid structure 10, such as Figure 4 As shown, the chain-type colloid structure 10 includes at least two fixing parts 101, a buffer zone is provided between two adjacent colloid blocks 101, and a deformation part 102 is provided in the buffer zone;

[0058] Further describing, the deformation part 102 in the buffer zone is respectively connected to two adjacent fixing parts 101 to form a chain-type colloid structure 10 in series;

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

[0060] The protective layer 3 may be formed by a single chain colloid structure 10, or by multiple chain colloid structures 10 arranged vertically and horizontally, or by multiple chain colloid structures 10 arranged front to back, or by multiple chain colloid structures 10 in multiple rows and columns, or by multiple chain colloid structures 10 in an irregular combination.

[0061] Further described, the deformation portion 102 includes a first stretching portion 1021 and a second stretching portion 1022 arranged to cross the first stretching portion 1021;

[0062] The deformable portion 102 may be formed of two cross-extension portions in an X-shaped structure. When the bending portion 22 of the display panel 2 is bent, the X-shaped deformable portion 102 between the two fixing portions 101 will increase the X-shaped angle (which changes the cross angle between the first stretching portion 1021 and the second stretching portion 1022). Figure 5 The chain colloid structure 10 is shown in a flattened state after being bent. It can be seen that the deformation portion 102 of the middle X-shaped structure has been stretched, and the overall length of the chain colloid structure 10 has been lengthened, thereby dispersing the bending stress during bending and dispersing the stretching length caused by bending.

[0063] In some embodiments, the chain-type colloid structure 10 includes at least two fixing blocks 101 and a deformation portion 102 , and the deformation portion 102 includes a third stretching portion 1023 ;

[0064] Different from the two cross-arranged stretching parts mentioned above, 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 during bending.

[0065] Alternatively, if Figure 6 As shown, the third stretching portion 1023 may adopt a V-shaped structure;

[0066] Alternatively, if Figure 7 As shown, the third stretching portion 1023 may adopt a U-shaped structure;

[0067] Alternatively, if Figure 8 As shown, the third stretching portion 1023 may adopt an S-shaped structure.

[0068] It should be noted that the stretching portion in the above-mentioned deformation portion 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 portion may also be other shapes that can achieve the same or similar functions.

[0069] It should be noted that, in the buffer zone between two adjacent fixing portions 101 , in addition to the solid deformable portion 102 , the empty portion of the buffer zone needs to be filled with liquid glue to ensure that there are no gaps in the glue layer, and filling with liquid glue will not affect the stretching of the deformable portion 102 .

[0070] In some embodiments, the elastic stretching body may use a spring-type colloid structure 20 to replace the chain-type colloid structure 10 in the protective layer 3, and the spring-type colloid structure 20 includes a first fixing portion 201, a second fixing portion 202, and a deformation portion 203 connecting the first fixing portion 201 and the second fixing portion 202;

[0071] The elastic stretching body using the spring-type colloid structure 20 has a deformable portion 203 between the first fixing portion 201 and the second fixing portion 202 that can be stretched during bending to disperse the bending stress during bending.

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

[0073] The protective layer 3 may be formed by a single spring-type colloid structure 20, or by multiple spring-type colloid structures 20 arranged side by side up and down to form the protective layer 3, or by multiple spring-type colloid structures 20 arranged side by side front and back to form the protective layer 3, or by multiple rows and columns of multiple spring-type colloid structures 20, or by multiple spring-type colloid structures 20 in an irregular combination to form the protective layer 3.

[0074] Further described, the shape of the deformation portion 203 includes a sawtooth shape or a wave shape;

[0075] Optionally, the deformation portion 203 is a continuous sawtooth shape (eg Fig. 9 as shown) or a sawtooth shape with one or more disconnected parts in the middle;

[0076] Optionally, the deformation portion 203 is in a continuous wave shape (eg Fig.10 as shown) or a wavy shape with one or more disconnected parts in the middle;

[0077] Optionally, the deformation portion 203 is a combination of a continuous sawtooth shape and a wave shape, or a combination of a sawtooth shape and a wave shape with one or more disconnected portions in the middle.

[0078] It should be noted that the above-mentioned deformation portion 203 includes a sawtooth structure (continuous or disconnected), a wave-shaped structure (continuous or disconnected) and a combination of sawtooth and wave shapes (continuous or disconnected) with elastic and retractable characteristics, but is not limited to this. The deformation portion 203 can also be other shapes that can achieve the same or similar functions.

[0079] It should be noted that in the adhesive layer structure, the empty parts of the solid deformation part 203 need to be filled with liquid glue to ensure that there are no gaps in the adhesive layer.

[0080] Exemplary methods:

[0081] The embodiment of the present invention further provides a method for preparing 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. Fig.11 As shown, the method for preparing the display module includes:

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

[0083] S2: forming a protective layer 3 located in the non-display area NA on one side of the bent portion 22 of the display panel 2, wherein the protective layer 3 includes at least one buffer structure 31, and the buffer structure 31 includes at least one elastic stretching body, and the elastic stretching body is stretched when being bent to disperse the bending stress generated when being bent;

[0084] S3: Make the vertical projection plane 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 plane of the bending 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 close to the display part 21 with the end of the display part 21 close to the bending part 22.

[0085] When bending, the elastic stretching body in the buffer structure 31 can be stretched to disperse the bending stress during bending, and disperse the stretching length caused by bending, so that when setting the module bending protective glue, there is no need to extend the length of the ends of the protective glue on both sides, and the display portion 21 of the display panel 2 does not need to be avoided. The display edge of the display panel 2 extends to the end of the vertical projection plane where the protective layer 3 and the bending portion 22 (the bending portion 22 is provided with a twist line) overlap.

[0086] The display portion 21 of the module is enlarged and the frame is narrowed, thereby effectively ensuring the product quality of the display module after bending.

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

[0088] Example electronic devices:

[0089] An embodiment of the present invention further provides an electronic device, which includes the display module of any of the above embodiments.

[0090] Although the present invention is described herein with reference to specific embodiments, it should be understood that these embodiments are merely examples of the principles and applications of the present invention. It should therefore be understood that many modifications may be made to the exemplary embodiments and that other arrangements may be devised without departing from the spirit and scope of the present invention as defined by the appended claims. It should be understood that the various dependent claims and features described herein may be combined in a manner different from that described in the original claims. It should also be understood that features described in conjunction with individual embodiments may be used in other described embodiments.

Claims

1. A display module, characterized in that: comprising a display area and a non-display area connected to the display area; The display module also includes: A display panel, the display panel comprising a display portion and a bending portion, the display portion is located in the display area, and the bending portion is located in the non-display area; A protective layer is arranged on one side of the display panel and is located in the non-display area. The protective layer includes at least one buffer structure. The buffer structure includes at least one elastic stretching body. When the elastic stretching body is bent, it is stretched to disperse the bending stress generated when it is bent.

2. The display module according to claim 1, wherein: The elastic stretching body comprises: Chain colloidal structure, which includes: There are at least two fixing parts, a buffer zone is arranged between two adjacent fixing parts, and a deformation part is arranged in the buffer zone.

3. The display module according to claim 2, wherein: The deformable parts in the buffer zone are respectively connected to two adjacent fixed parts to form a chain colloid structure in series; Optionally, the elastic stretching body includes one or more side-by-side and / or parallel chain colloid structures.

4. The display module according to claim 2, wherein: The deformation portion comprises: The first stretching section, A second stretching portion is arranged to cross the first stretching portion.

5. The display module according to claim 2, wherein: The deformation portion comprises: The third stretching section, The third stretching portion includes a V-shaped structure, a U-shaped structure, or an S-shaped structure.

6. The display module according to claim 1, wherein: The elastic stretching body comprises: The spring type colloid structure comprises: The first fixing part, a second fixing portion, and a deformation portion located between the first fixing portion and the second fixing portion; Optionally, the elastic stretching body includes one or more spring-type colloid structures arranged side by side and / or in parallel.

7. The display module according to claim 6, wherein: The shape of the deformation portion includes a sawtooth shape or a wave shape; Optionally, the deformation portion is a continuous sawtooth shape or a sawtooth shape with one or more disconnected parts in the middle; or, optionally, the deformation portion is a continuous wave shape or a wave shape with one or more disconnected parts in the middle; or, optionally, the deformation portion is a shape combined with a continuous sawtooth shape and a wave shape or a shape combined with a sawtooth shape and a wave shape with one or more disconnected parts in the middle.

8. The display module according to claim 1, wherein: 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 bent portion, and the vertical projection plane of the protective layer is located outside the range of the display portion; Preferably, in a direction perpendicular to the plane where the display portion is located, a distance between an end of a vertical projection surface of the protection layer close to the display portion and an end of the display portion close to the bending portion is equal to.

9. A method for preparing a display module, characterized in that: The display module includes a display area and a non-display area connected to the display area; The preparation method comprises: Providing a display panel, the display panel comprising a display portion and a bending portion, the display portion is located in the display area, and the bending portion is located in the non-display area; A protective layer is formed on one side of the display panel in the non-display area, wherein the protective layer includes at least one buffer structure, and the buffer structure includes at least one elastic stretching body, and the elastic stretching body is stretched when bent to disperse the bending stress generated when the elastic stretching body is bent.

10. An electronic device, characterized in that: It comprises the display module as claimed in any one of claims 1 to 8.

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