Display module and display device

Abstract

The application provides a display module and a display device. The display module comprises a planar area and a curved area. The curved area comprises a first side edge sub-area, a second side edge sub-area and a corner sub-area. The display module further comprises a display panel, a cover plate and an adhesive layer. The adhesive layer comprises a first adhesive part. The first adhesive part is arranged in the corner sub-area. The edge of at least part of the first adhesive part is arranged inwardly recessed compared with the edge of the display panel. The edge of the first adhesive part close to the second side edge sub-area gradually increases first and then gradually decreases along the path from the first side edge sub-area to the second side edge sub-area. In this way, the Gaussian curvature of the part of the display panel corresponding to the corner sub-area close to the second side edge sub-area can be reduced, so that the wrinkle phenomenon of the display panel at the corner sub-area can be alleviated or even eliminated, and the appearance and display effect of the display module can be improved.

Description

Technical Field

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

[0002] With social development and changing trends, people's aesthetic awareness and demand for beauty are gradually increasing. In the pursuit of visual excellence and higher screen-to-body ratio, mobile phones are increasingly moving towards narrow bezels or even bezel-less designs, thus giving rise to curved screens.

[0003] Currently, the bonding problem of curved display modules, especially quad-curved display modules, has been a persistent technical challenge for the industry. Quad-curved display modules have curved sides, and at the corner where the long and short sides intersect, there exists a three-dimensional curved surface, known as a Gaussian surface. When the display panel enters the curved surface, especially the Gaussian surface, the excess area of ​​the display panel prevents the gap between the display panel and the cover plate from being completely filled. This leads to wrinkles easily forming at the junction of the short side and the corner area, affecting the appearance and display effect of the curved display module.

[0004] Therefore, it is necessary to provide a display module and display device to improve this deficiency. Summary of the Invention

[0005] The embodiments of this application provide a display module and display device that can improve the problem of wrinkles appearing at the connection between the short side and corner area of ​​the display module.

[0006] To achieve the above objectives, according to a first aspect of this application, a display module is provided, including a planar area and a curved area, the curved area being disposed around the periphery of the planar area, the curved area including a first side sub-area, a second side sub-area, and a corner sub-area, the corner sub-area being connected between the first side sub-area and the second side sub-area, the display module comprising:

[0007] The display panel includes a display area and a non-display area disposed around the periphery of the display area, wherein the width of the non-display area at the first side sub-area is greater than the width of the non-display area at the second side sub-area;

[0008] A cover plate is disposed on one side of the display panel;

[0009] An adhesive layer is disposed between the display panel and the cover plate, the adhesive layer including a first adhesive portion disposed in the corner sub-area;

[0010] Wherein, at least a portion of the edge of the first adhesive portion is recessed inward relative to the edge of the display panel, along the path extending from the first side sub-area to the second side sub-area, the inward width of the edge of the first adhesive portion near the second side sub-area relative to the edge of the display panel first gradually increases and then gradually decreases.

[0011] Optionally, along the path extending from the first side sub-region to the second side sub-region, the edge of the first adhesive portion near the second side sub-region exhibits a continuously non-linear variation in inward width relative to the edge of the display panel.

[0012] Optionally, the first adhesive portion includes a first adhesive sub-portion and a second adhesive sub-portion, wherein the first adhesive sub-portion is disposed near the second side sub-region, and the second adhesive sub-portion is connected to the side of the first adhesive sub-portion near the first side sub-region;

[0013] The edge of the second adhesive sub-part is recessed inward relative to the edge of the display panel. The inward width of the edge of the first adhesive sub-part relative to the edge of the display panel is a first width. Along the path extending from the first side sub-area to the second side sub-area, the first width gradually increases and then gradually decreases. The inward width of the edge of the second adhesive sub-part relative to the edge of the display panel is a second width. The second width is greater than the minimum value of the first width and less than the maximum value of the first width.

[0014] Optionally, the adhesive layer further includes a second adhesive portion, which is disposed in the first side sub-area and connected to the second adhesive sub-part;

[0015] The edge of the second adhesive portion is recessed inward relative to the edge of the display panel, and the inward width of the edge of the second adhesive portion relative to the edge of the display panel is equal to the second width.

[0016] Optionally, the second width remains unchanged along the path extending from the first side sub-region to the second side sub-region.

[0017] Optionally, the first adhesive portion further includes a third adhesive sub-portion, which is connected to the side of the first adhesive sub-portion near the second side sub-region;

[0018] Wherein, the edge of the third adhesive sub-part is recessed inward relative to the edge of the display panel, the recessed width of the edge of the first adhesive sub-part relative to the edge of the display panel is a first width, the recessed width of the edge of the third adhesive sub-part relative to the edge of the display panel is a third width, and the third width is less than or equal to the minimum value of the first width.

[0019] Optionally, the adhesive layer further includes a third adhesive portion, which is disposed in the second side sub-region and connected to the third adhesive sub-part;

[0020] The edge of the third adhesive portion is recessed inward relative to the edge of the display panel, and the inward width of the edge of the third adhesive portion relative to the edge of the display panel is equal to the third width.

[0021] Optionally, the third width remains unchanged along the path extending from the first side sub-region to the second side sub-region.

[0022] Optionally, the first adhesive portion further includes a third adhesive sub-portion, which is connected to the side of the first adhesive sub-portion near the second side sub-area, and the edge of the third adhesive sub-portion is flush with the edge of the display panel.

[0023] Optionally, the adhesive layer further includes a third adhesive portion disposed in the second side sub-area, the third adhesive portion being connected to the third adhesive sub-part, and the edge of the third adhesive portion being flush with the edge of the display panel.

[0024] Optionally, the display panel includes a corner portion, which is disposed in the corner sub-area;

[0025] The corner portion includes a first corner sub-part, which is correspondingly provided with the portion of the edge of the first adhesive sub-part that gradually decreases in width. Along the path extending from the first side sub-area to the second side sub-area, the distance between the edge of the first corner portion and the display area gradually decreases.

[0026] Optionally, the distance between the edge of the corner and the edge of the display area is a first distance. Along the path extending from the first side sub-area to the second side sub-area, the first distance corresponding to a portion of the corner exhibits a continuous non-linear change.

[0027] Wherein, the absolute value of the rate of change of the first distance corresponding to the first corner sub-part is greater than the absolute value of the rate of change of the first distance corresponding to the other parts of the corner sub-part besides the first corner sub-part.

[0028] Optionally, the distance between the edge of the corner and the display area is greater than the width of the non-display area at the second side sub-area.

[0029] Optionally, the edge of the display area is recessed inward relative to the edge of the adhesive layer, and the distance between the edge of the first adhesive portion and the display area gradually decreases along the path extending from the first side sub-area to the second side sub-area.

[0030] According to a second aspect of this application, a display device is provided, the display device comprising the display module as described above.

[0031] In the display module of this application embodiment, by setting at least a portion of the edge of the first adhesive part inward relative to the edge of the display panel, and by making the inward width of the edge of the first adhesive part near the second side sub-area gradually increase and then gradually decrease along the path extending from the first side sub-area to the second side sub-area, the Gaussian curvature of the corresponding corner sub-area of ​​the display panel near the second side sub-area can be reduced, thereby alleviating or even eliminating the wrinkling phenomenon of the display panel at the corner sub-area, and thus improving the appearance and display effect of the display module.

[0032] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings, wherein the same reference numerals in the following description denote the same parts.

[0035] Figure 1 A schematic diagram of a display module provided for an embodiment of this application;

[0036] Figure 2 For along Figure 1 The cross-sectional view along the A-A' direction shown;

[0037] Figure 3 A top view of a first display module provided for embodiments of this application;

[0038] Figure 4 for Figure 3 Enlarged view of point a in the middle;

[0039] Figure 5 A top view of a second display module provided for embodiments of this application;

[0040] Figure 6 for Figure 5 Enlarged view of point b in the middle;

[0041] Figure 7 For along Figure 6 The cross-sectional view along the B-B' direction is shown;

[0042] Figure 8 A schematic diagram of a display device provided for an embodiment of this application. Detailed Implementation

[0043] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the protection scope of this application.

[0044] This application provides a display module including a planar area and a curved area. The curved area is disposed around the periphery of the planar area and includes a first side sub-area, a second side sub-area, and a corner sub-area. The corner sub-area connects the first side sub-area and the second side sub-area. The display module also includes a display panel, a cover plate, and an adhesive layer. The cover plate is disposed on one side of the display panel, and the adhesive layer is disposed between the display panel and the cover plate. The adhesive layer includes a first adhesive portion disposed in the corner sub-area. The display panel includes a display area and a non-display area disposed around the periphery of the display area. The width of the non-display area at the first side sub-area is greater than the width of the non-display area at the second side sub-area. At least a portion of the edge of the first adhesive portion is recessed inward relative to the edge of the display panel. Along the path extending from the first side sub-area to the second side sub-area, the inward width of the edge of the first adhesive portion near the second side sub-area gradually increases and then gradually decreases relative to the edge of the display panel.

[0045] In the embodiments of this application, by setting at least a portion of the edge of the first adhesive sub-part inward relative to the edge of the display panel, and by making the inward width of the edge of the first adhesive sub-part near the second side sub-area gradually increase and then gradually decrease along the path extending from the first side sub-area to the second side sub-area, the Gaussian curvature of the portion of the corresponding corner sub-area of ​​the display panel near the second side sub-area can be reduced, thereby alleviating or even eliminating the wrinkling phenomenon of the display panel at the corner sub-area, and thus improving the appearance and display effect of the display module.

[0046] Please see Figure 1 , Figure 1This is a schematic diagram of a display module provided in an embodiment of the present application. The display module 100 includes a planar area A1 and a curved area A2. The curved area A2 is disposed around the planar area A1. The curved area A2 includes a first side sub-area A21, a second side sub-area A22 and a corner sub-area A23. The corner sub-area A23 is connected between the first side sub-area A21 and the second side sub-area A22.

[0047] In some embodiments, please refer to Figure 1 The curved surface area A2 includes two first side sub-areas A21, two second side sub-areas A22, and four corner sub-areas A23. The two first side sub-areas A21 are arranged opposite each other, the two second side sub-areas A22 are arranged opposite each other, and the four corner sub-areas A23 are respectively arranged between adjacent first side sub-areas A21 and second side sub-areas A22.

[0048] Please see Figure 2 , Figure 2 For along Figure 1 The cross-sectional view along the A-A' direction shown shows that the display module 100 includes a display panel 1, a cover plate 2, and an adhesive layer 3. The cover plate 2 is disposed on one side of the display panel 1, and the adhesive layer 3 is disposed between the display panel 1 and the cover plate 2. The cover plate 2 is attached to the display panel 1 through the adhesive layer 3.

[0049] Please see Figure 1 and Figure 2 The portion of cover plate 2 corresponding to the flat area A1 is flat, while the portions of cover plate 2 corresponding to the first side sub-area A21, the second side sub-area A22, and the corner sub-area A23 are curved and oriented towards the display panel 1. The portion of display panel 1 corresponding to the flat area A1 is flat, while the portions of display panel 1 corresponding to the first side sub-area A21, the second side sub-area A22, and the corner sub-area A23 are curved, and the curved shape of the portions of display panel 1 corresponding to the first side sub-area A21, the second side sub-area A22, and the corner sub-area A23 is adapted to the curved shape of cover plate 2.

[0050] In the embodiments of this application, please refer to Figure 1 and Figure 2 The adhesive layer 3 includes a first adhesive portion 31, which is disposed in the corner area A23.

[0051] Please see Figure 3 and Figure 4 , Figure 3 A top view of a first display module provided for embodiments of this application. Figure 4 for Figure 3 An enlarged view of point a in the middle. Figure 4The outermost solid outline is the edge of the cover plate 2, the innermost solid outline is the boundary line between the flat part and the curved part of the cover plate 2, the outermost dashed outline is the edge of the display panel 1 (i.e. the edge of the non-display area NA), the middle dashed outline is the edge of the adhesive layer 3, and the innermost dashed outline is the edge of the display area AA of the display panel 1.

[0052] In the embodiments of this application, the width of the non-display area NA in the first side sub-area A21 is greater than the width of the non-display area NA in the second side sub-area A22. The width of the non-display area NA is the border width of the display module, that is, the border width of the display module in the first side sub-area A21 is greater than the border width in the second side sub-area A22.

[0053] In some embodiments, please refer to Figure 1 The first side sub-area A21 is located on the long side of the display module 100, and the second side sub-area A22 is located on the short side of the display module 100. The length of the first side sub-area A21 is greater than the length of the second side sub-area A22. In practical applications, the length of the first side sub-area A21 can also be less than or equal to the length of the second side sub-area A22.

[0054] Please see Figure 3 and Figure 4 At least a portion of the edge of the first adhesive portion 31 is recessed inward relative to the edge of the display panel. Along the path extending from the first side sub-region A21 to the second side sub-region A22, the inward width of the edge of the first adhesive portion 31 near the second side sub-region A22 relative to the edge of the display panel first gradually increases and then gradually decreases.

[0055] Please see Figure 3 and Figure 4 The first adhesive portion 31 includes a first adhesive sub-portion 311, which is disposed near the second side sub-region A22. The edge of the first adhesive sub-portion 311 is recessed inward relative to the edge of the display panel 1. Along the path extending from the first side sub-region A21 to the second side sub-region A22, the inward width of the edge of the first adhesive sub-portion 311 relative to the edge of the display panel 1 gradually increases and then gradually decreases.

[0056] Please see Figure 3 and Figure 4 The inward width of the edge of the first adhesive sub-part 311 relative to the edge of the display panel 1 is set as the first width d1. Along the path extending from the first side sub-area A21 to the second side sub-area A22, the first width d1 gradually increases and then gradually decreases.

[0057] In the embodiments of this application, by setting the edge of the first adhesive sub-part 311 to be recessed inward relative to the edge of the display panel 1, and by making the inward width of the edge of the first adhesive sub-part 311 relative to the edge of the display panel 1 gradually increase and then gradually decrease along the path extending from the first side sub-area A21 to the second side sub-area A22, the area where the first adhesive sub-part 311 is located is the area where the border width of the display module 100 changes drastically. By gradually increasing the inward width of the adhesive layer 3 in the area where the border width of the display module 100 changes drastically, the deformation amount of the adhesive layer 3 with a larger inward width after compression is increased, thereby increasing the bending radius of the display panel 1 after bending in the corresponding part. In this way, the Gaussian curvature of the part of the display panel 1 corresponding to the area where the border width of the display module 100 changes drastically can be reduced, thereby reducing or even eliminating the wrinkling phenomenon of the display panel at the corner sub-area, and thus improving the appearance and display effect of the display module.

[0058] In the embodiments of this application, by gradually increasing the inward width of the edge of the first adhesive sub-part 311 to a maximum value and then gradually decreasing it, the inward width of the portion of the first adhesive sub-part 311 near the second side sub-area A22 is reduced, so that more adhesive layer 3 can be filled between the edges of the display panel 1 and the cover plate 2 near the second side sub-area A22, thereby increasing the adhesive force between the display panel 1 and the cover plate 2 in this area and preventing air bubbles from forming between the display panel 1 and the cover plate 2 near the second side sub-area A22.

[0059] In some embodiments, along the path extending from the first side sub-region A21 to the second side sub-region A22, the edge of the first adhesive portion 31 near the second side sub-region A22 exhibits a continuously non-linear variation in the inward width relative to the edge of the display panel 1.

[0060] Please see Figure 3 and Figure 4 The inward width of the edge of the first adhesive sub-part 311 relative to the edge of the display panel 1 varies continuously and non-linearly. That is, the edge of the first adhesive sub-part 311 adopts a gradually unequal inward width design relative to the edge of the display panel 1. The inward width of the edge of the first adhesive sub-part 311 gradually increases and then gradually decreases. This can not only reduce the Gaussian curvature of the part of the display panel 1 corresponding to the area of ​​the display module 100 where the bezel width changes sharply, thereby reducing or even eliminating the wrinkling phenomenon of the display panel in the corner sub-area, thus improving the appearance and display effect of the display module, but also prevent the generation of air bubbles between the display panel 1 and the cover plate 2 near the second side sub-area A22.

[0061] In some embodiments, please refer to Figure 3 and Figure 4The first adhesive portion 31 further includes a second adhesive sub-portion 312, which is connected to the side of the first adhesive sub-portion 311 near the first side sub-area A21. The edge of the second adhesive sub-portion 312 is recessed inward relative to the edge of the display panel 1. The inward width of the edge of the first adhesive sub-portion 311 relative to the edge of the display panel 1 is a first width d1, and the inward width of the edge of the second adhesive sub-portion 312 relative to the edge of the display panel 1 is a second width d2. The second width d2 is greater than the minimum value of the first width d1, and the second width d2 is less than the maximum value of the first width d1.

[0062] In some embodiments, please refer to Figure 4 Along the path extending from the first side sub-area A21 to the second side sub-area A22, the second width d2 remains unchanged. At the second adhesive sub-area 312, the inward width of the edge of the adhesive layer 3 relative to the edge of the display panel 1 remains unchanged. When transitioning from the second adhesive sub-area 312 to the first adhesive sub-area 311, the inward width of the edge of the adhesive layer 3 relative to the edge of the display panel 1 gradually increases to a maximum value, and then gradually decreases from the maximum value until it decreases to a minimum value.

[0063] In some embodiments, the adhesive layer 3 further includes a second adhesive portion 32, which is disposed on the first side sub-region A21 and connected to the second adhesive sub-portion 312. The edge of the second adhesive portion 32 is recessed inward relative to the edge of the display panel 1, and the inward width of the edge of the second adhesive portion 32 relative to the edge of the display panel 1 is equal to the second width d2.

[0064] Please see Figure 4 The inward width of the edge of the second adhesive portion 32 relative to the edge of the display panel 1 is set to a fourth width d4. The fourth width d4 is equal to the second width d2. Along the extension direction of the first side sub-region A21, the fourth width d4 remains unchanged. That is, at the second adhesive portion 32, the inward width of the edge of the adhesive layer 3 relative to the edge of the display panel 1 remains unchanged, and is equal to the inward width of the edge of the adhesive layer 3 at the second adhesive sub-portion 312 relative to the edge of the display panel 1.

[0065] It should be noted that at the first adhesive sub-part 311, the inward width of the edge of the adhesive layer 3 is greater than the inward width of the edge of the second adhesive sub-part 312 where the adjacent frame width is larger. Since the inward width of the edge of the adhesive layer 3 is larger, even if the adhesive layer 3 is subjected to greater force and the deformation is greater, there is enough space between the edges of the display panel 1 and the cover plate 2 to accommodate the adhesive layer 3 that has been squeezed and deformed, thereby reducing the glue overflow phenomenon in the corner area of ​​the Gaussian curved surface (i.e., corner sub-area A23) where the force is greater.

[0066] In some embodiments, please refer to Figure 4The first adhesive portion 31 also includes a third adhesive sub-portion 313. The third adhesive sub-portion 313 is connected to the side of the first adhesive sub-portion 311 near the second side sub-area A22. The edge of the third adhesive sub-portion 313 is recessed inward relative to the edge of the display panel 1. The inward width of the edge of the third adhesive sub-portion 313 relative to the edge of the display panel 1 is the third width d3. The third width d3 is less than or equal to the minimum value of the first width d1.

[0067] In some embodiments, please refer to Figure 4 Along the path extending from the first side sub-area A21 to the second side sub-area A22, the third width d3 remains unchanged. After the inward width of the edge of the first adhesive sub-area 311 decreases from its maximum value to its minimum value, at the third adhesive sub-area 313, the inward width of the edge of the adhesive layer 3 relative to the edge of the display panel 1 remains unchanged.

[0068] In some embodiments, the adhesive layer 3 further includes a third adhesive portion 33, which is disposed on the second side sub-region A22 and connected to the third adhesive sub-portion 313. The edge of the third adhesive portion 33 is recessed inward relative to the edge of the display panel 1, and the inward width of the edge of the third adhesive portion 33 relative to the edge of the display panel is equal to the third width d3.

[0069] Please see Figure 4 The inward width of the edge of the third adhesive portion 33 relative to the edge of the display panel 1 is set to the fifth width d5. The fifth width d5 ​​is equal to the third width d3. Along the extension direction of the second side sub-region A22, the fifth width d5 ​​remains unchanged. That is, at the third adhesive portion 33, the inward width of the edge of the adhesive layer 3 relative to the edge of the display panel 1 remains unchanged, and is equal to the inward width of the edge of the adhesive layer 3 relative to the edge of the display panel 1 at the third adhesive sub-portion 313.

[0070] It should be noted that at the first adhesive sub-part 311, the inward width of the edge of the adhesive layer 3 is greater than the inward width of the edge of the third adhesive sub-part 313 and the third adhesive part 33 where the adjacent frame width is narrower. Since the inward width of the edge of the first adhesive sub-part 311 is larger, even if the adhesive layer 3 is subjected to greater force and the deformation is greater, there is enough space between the edges of the display panel 1 and the cover plate 2 to accommodate the adhesive layer 3 that has been squeezed and deformed, thereby reducing the phenomenon of glue overflow in the corner area of ​​the Gaussian curved surface (i.e., corner sub-area A23) where the force is greater.

[0071] In some embodiments, please refer to Figure 3 and Figure 4The display panel 1 includes a display area AA and a non-display area disposed around the display area AA. The display panel 1 includes a corner portion 11, which is disposed in a corner sub-area A23. The corner portion 11 includes a first corner sub-area 111, which is disposed corresponding to the portion of the first adhesive portion 31 whose inward width gradually decreases. The distance between the edge of the first corner portion 111 and the display area AA gradually decreases along the path extending from the first side sub-area A21 to the second side sub-area A22.

[0072] In some embodiments, please refer to Figure 4 The distance between the edge of corner 11 and the edge of display area AA is the first distance d6. Along the path extending from the first side sub-area A21 to the second side sub-area A22, the first distance d6 corresponding to part of corner 11 changes continuously and non-linearly.

[0073] In some embodiments, please refer to Figure 4 The absolute value of the rate of change of the first distance d6 corresponding to the first corner sub-part 111 is greater than the absolute value of the rate of change of the first distance corresponding to the other parts of the corner sub-part 11 besides the first corner sub-part 111.

[0074] It should be noted that the first corner portion 111 is the area where the width of the display module's border changes drastically. In this area, the width of the first corner portion 111 decreases drastically. By gradually increasing and then gradually decreasing the inward width of the edge of the first adhesive portion 311 relative to the edge of the display panel 1, the distance between the edge of the adhesive layer 3 and the display area AA in the area where the border width changes drastically can be gradually reduced. This can reduce the Gaussian curvature of the display panel 1 at the connection between the corner portion A23 and the second side portion A22, thereby improving the wrinkling phenomenon of the display panel at the corner portion A23.

[0075] In some embodiments, please refer to Figure 4 The edge of the display area AA is recessed inward relative to the edge of the adhesive layer 3. Along the direction from the first side sub-area A21 to the second side sub-area A22, the distance between the edge of the first adhesive part 31 and the display area AA gradually decreases, and the absolute value of the rate of change of the distance between the edge of the first adhesive part 31 and the display area AA is less than the absolute value of the rate of change of the first distance d6 corresponding to the first corner sub-area 111. In this way, the distance between the edge of the adhesive layer 3 at the corner sub-area A23 and the display area AA can be continuously and gently changed, thereby reducing the Gaussian curvature of the display panel 1 at the junction of the corner sub-area A23 and the second side sub-area A22, thereby improving the wrinkling phenomenon of the display panel at the corner sub-area A23.

[0076] In some embodiments, please refer to Figure 4The display panel 1 also includes a first side portion 12 and a second side portion 13. The first side portion 12 is disposed in the first side sub-area A21, and the second side portion 13 is disposed in the second side sub-area A22. The corner portion 11 connects the first side portion 12 and the second side portion 13. The distance between the edge of the first side portion 12 and the display area AA is greater than the distance between the edge of the second side portion 13 and the display area AA. The distance between the edge of the corner portion 11 and the display area AA is greater than the distance between the edge of the second side portion 13 and the display area AA. That is, the distance between the edge of the display panel 1 and the display area AA at the first side sub-area A21 and the corner sub-area A23 is greater than the distance between the edge of the display panel 1 and the display area AA at the second side sub-area A22.

[0077] It should be noted that the distance between the first side portion 12 and the display area AA is the width of the non-display area NA at the first side sub-area A21, the distance between the second side portion 13 and the display area AA is the width of the non-display area NA at the second side sub-area A22, and the distance between the edge of the corner portion 11 and the display area AA is the width of the non-display area NA at the corner portion 11. That is, the widths of the non-display areas NA at the first side sub-area A21 and the corner sub-area A23 are both greater than the width of the non-display area NA at the second side sub-area A22.

[0078] In some embodiments, please refer to Figures 5 to 7 , Figure 5 A top view of a second display module provided for embodiments of this application. Figure 6 for Figure 5 An enlarged view of point b in the middle. Figure 7 For along Figure 6 The cross-sectional view along the B-B' direction shown is shown. Figures 5 to 7 The structure of the second type of display module shown is similar to... Figures 2 to 4 The structures of the display modules shown are roughly the same, except that the edge of the third adhesive sub-part 313 is flush with the edge of the display panel 1. That is, at the third adhesive sub-part 313, the edge between the display panel 1 and the cover plate 2 is filled with adhesive layer 3. This can further increase the adhesive force between the display panel 1 and the cover plate 2 at the third adhesive sub-part 313, thereby further reducing the risk of air bubbles forming between the display panel 1 and the cover plate 2 at the third adhesive sub-part 313.

[0079] In some embodiments, please refer to Figure 5 and Figure 6 The edge of the third adhesive part 33 is flush with the edge of the display panel 1, which can further increase the adhesive force between the display panel 1 and the cover plate 2 at the second side sub-area A22, thereby further reducing the risk of air bubbles forming between the display panel 1 and the cover plate 2 at the second side sub-area A22.

[0080] In some embodiments, please refer to Figure 2 The display module 100 also includes a polarizing layer 4, which is disposed between the display panel 1 and the adhesive layer 3.

[0081] In some embodiments, please refer to Figure 2 The display module 100 also includes a back plate 5, which is located on the side of the display panel 1 away from the cover plate 2.

[0082] In some embodiments, please refer to Figure 2 The display module 100 also includes a support layer 6, which is disposed on the side of the back plate 5 away from the display panel 1. The support layer 6 is used to support the display panel 1 in conjunction with the back plate 5 and to dissipate heat from the display panel 1.

[0083] In some embodiments, please refer to Figure 2 The supporting functional layer 6 may include multiple stacked sub-layers, such as a buffer layer 61, a heat dissipation layer 62, and a metal layer 63. The material of the buffer layer 61 includes foam or polyethylene terephthalate with large elastic deformation properties, the material of the heat dissipation layer 62 includes graphite and other materials with excellent thermal conductivity or heat dissipation, and the material of the metal layer 63 includes copper foil and other materials.

[0084] In some embodiments, please refer to Figure 2 The display module 100 also includes a light-shielding layer 7, which is disposed on the periphery of the surface of the cover plate 2 near the display panel 1 and on the sides of the cover plate 2. Part of the light-shielding layer 7 is disposed between the cover plate 2 and the adhesive layer 3. The light-shielding layer 7 is used to block the non-display areas at the edges of the display module 100, preventing light leakage from these areas. The material of the light-shielding layer 7 includes ink.

[0085] Based on the display module provided in the above embodiments of this application, embodiments of this application also provide a display device. Please refer to [link to relevant documentation]. Figure 8 , Figure 8 This is a schematic diagram of a display device provided in an embodiment of this application. The display device 1000 includes a display module 100 and a housing 200, with the display module 100 disposed on the housing 200. The display module 100 can be any of the display modules provided in the above embodiments. The display device provided in the embodiments of this application can achieve the same technical effects as the display modules provided in any of the above embodiments, and will not be described in detail here.

[0086] The beneficial effects of the embodiments of this application are as follows: The embodiments of this application provide a display module, which includes a planar area and a curved area. The curved area includes a first side sub-area, a second side sub-area, and a corner sub-area. The display module also includes a display panel, a cover plate, and an adhesive layer. The adhesive layer includes a first adhesive portion disposed in the corner sub-area. By setting at least a portion of the edge of the first adhesive portion inward relative to the edge of the display panel, and making the inward width of the edge of the first adhesive portion near the second side sub-area gradually increase and then gradually decrease along the path extending from the first side sub-area to the second side sub-area, the Gaussian curvature of the portion of the display panel near the second side sub-area corresponding to the corner sub-area can be reduced, thereby alleviating or even eliminating the wrinkling phenomenon of the display panel in the corner area, and thus improving the appearance and display effect of the display module.

[0087] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0088] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0089] The embodiments, implementation methods, and related technical features of this application can be combined and substituted for each other without conflict.

[0090] The above are merely preferred embodiments of this application and are not intended to limit this application in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the scope of the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. A display module, characterized in that, The display module includes a planar area and a curved area, wherein the curved area is disposed around the periphery of the planar area, and the curved area includes a first side sub-area, a second side sub-area, and a corner sub-area, wherein the corner sub-area connects the first side sub-area and the second side sub-area. The display panel includes a display area and a non-display area disposed around the periphery of the display area, wherein the width of the non-display area at the first side sub-area is greater than the width of the non-display area at the second side sub-area; A cover plate is disposed on one side of the display panel; An adhesive layer is disposed between the display panel and the cover plate, the adhesive layer including a first adhesive portion disposed in the corner sub-area; Wherein, at least a portion of the edge of the first adhesive portion is recessed inward relative to the edge of the display panel, along the path extending from the first side sub-area to the second side sub-area, the inward width of the edge of the first adhesive portion near the second side sub-area relative to the edge of the display panel first gradually increases and then gradually decreases; The first adhesive portion includes a first adhesive sub-part and a second adhesive sub-part. The first adhesive sub-part is disposed near the second side sub-area, and the second adhesive sub-part is connected to the side of the first adhesive sub-part near the first side sub-area. The edge of the second adhesive sub-part is recessed inward relative to the edge of the display panel. The inward width of the edge of the first adhesive sub-part relative to the edge of the display panel is a first width. Along the path extending from the first side sub-area to the second side sub-area, the first width gradually increases and then gradually decreases. The inward width of the edge of the second adhesive sub-part relative to the edge of the display panel is a second width. The second width is greater than the minimum value of the first width and less than the maximum value of the first width.

2. The display module as described in claim 1, characterized in that, Along the path extending from the first side sub-region to the second side sub-region, the edge of the first adhesive portion near the second side sub-region exhibits a continuous non-linear variation in the inward width relative to the edge of the display panel.

3. The display module as described in claim 1, characterized in that, The adhesive layer further includes a second adhesive portion, which is disposed in the first side sub-area and is connected to the second adhesive sub-area. The edge of the second adhesive portion is recessed inward relative to the edge of the display panel, and the inward width of the edge of the second adhesive portion relative to the edge of the display panel is equal to the second width.

4. The display module as described in claim 1, characterized in that, The second width remains unchanged along the path extending from the first side sub-region to the second side sub-region.

5. The display module as described in claim 1, characterized in that, The first adhesive portion further includes a third adhesive sub-portion, which is connected to the side of the first adhesive sub-portion near the second side sub-region; Wherein, the edge of the third adhesive sub-part is recessed inward relative to the edge of the display panel, the recessed width of the edge of the first adhesive sub-part relative to the edge of the display panel is a first width, the recessed width of the edge of the third adhesive sub-part relative to the edge of the display panel is a third width, and the third width is less than or equal to the minimum value of the first width.

6. The display module as described in claim 5, characterized in that, The adhesive layer further includes a third adhesive portion, which is disposed in the second side sub-region and is connected to the third adhesive sub-part. The edge of the third adhesive portion is recessed inward relative to the edge of the display panel, and the inward width of the edge of the third adhesive portion relative to the edge of the display panel is equal to the third width.

7. The display module as described in claim 5, characterized in that, The third width remains unchanged along the path extending from the first side sub-region to the second side sub-region.

8. The display module as described in claim 1, characterized in that, The first adhesive portion further includes a third adhesive sub-portion, which is connected to the side of the first adhesive sub-portion near the second side sub-area, and the edge of the third adhesive sub-portion is flush with the edge of the display panel.

9. The display module as described in claim 8, characterized in that, The adhesive layer further includes a third adhesive portion, which is disposed in the second side sub-area. The third adhesive portion is connected to the third adhesive sub-part, and the edge of the third adhesive portion is flush with the edge of the display panel.

10. The display module as described in any one of claims 1 to 9, characterized in that, The display panel includes a corner portion, which is disposed in the corner sub-area; The corner portion includes a first corner sub-part, which is correspondingly disposed to the portion where the inward width of the edge of the first adhesive portion gradually decreases. Along the path extending from the first side sub-area to the second side sub-area, the distance between the edge of the first corner portion and the display area gradually decreases.

11. The display module as described in claim 10, characterized in that, The distance between the edge of the corner and the display area is a first distance. Along the path extending from the first side sub-area to the second side sub-area, the first distance corresponding to a portion of the corner exhibits a continuous non-linear change. Wherein, the absolute value of the rate of change of the first distance corresponding to the first corner sub-part is greater than the absolute value of the rate of change of the first distance corresponding to the other parts of the corner sub-part besides the first corner sub-part.

12. The display module as described in claim 10, characterized in that, The distance between the edge of the corner and the display area is greater than the width of the non-display area at the second side sub-area.

13. The display module as described in any one of claims 1 to 9, characterized in that, The edge of the display area is recessed inward relative to the edge of the adhesive layer, and the distance between the edge of the first adhesive portion and the display area gradually decreases along the path extending from the first side sub-area to the second side sub-area.

14. A display device, characterized in that, Includes the display module as described in any one of claims 1 to 13.

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