Display module and display device

Abstract

The invention provides a display module and a display device.The display module comprises a plane area and a curved surface area, the curved surface 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 a bonding layer, the bonding layer comprises a first bonding part, the first bonding part is arranged in the corner sub-area, and the second bonding part is arranged in the corner sub-area. At least part of the edge of the first bonding part is retracted inwards relative to the edge of the display panel, and the retraction width of the edge of the first bonding part close to the second side edge sub-area relative to the edge of the display panel is gradually increased and then gradually reduced 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 portion, close to the second side edge sub-area, of the corresponding corner sub-area of the display panel can be reduced, so that the wrinkle phenomenon of the display panel at the corner sub-area can be relieved or even eliminated, and then the appearance and the display effect of the display module can be improved.

Description

Technical Field

[0001] The present application relates to the field of display technologies, and particularly to a display module and a display device. Background Art

[0002] With the development of society and the change of trends, people's aesthetic awareness and demand for beauty are gradually increasing. In the mobile phone industry, in order to pursue the ultimate vision and increase the screen-to-body ratio, mobile phones are increasingly developing towards narrow bezels or even borderless designs. Therefore, curved screens have emerged as the times require.

[0003] Currently, the bonding problem of curved display modules, especially four-curved display modules, has always been a technical problem that plagues the industry. All four sides of a four-curved display module are curved, and there is a three-dimensional curved surface at the corner where the long side intersects the short side. This three-dimensional curved surface is called a Gaussian surface. When the display panel enters the curved surface, especially the Gaussian surface, due to the area surplus of the display panel, the gap between the display panel and the cover plate cannot be completely filled, resulting in wrinkles easily generated at the connection between 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 a display device to improve this defect. Summary of the Invention

[0005] Embodiments of the present application provide a display module and a display device, which can improve the problem of wrinkles occurring at the connection between the short side and the corner area of the display module.

[0006] To achieve the above object, according to the first aspect of the present application, a display module is provided, including a flat area and a curved area. The curved area is disposed on the periphery of the flat area. The curved area includes a first side sub-area, a second side sub-area, and a corner sub-area. The corner sub-area is connected between the first side sub-area and the second side sub-area. The display module includes:

[0007] A display panel, including a display area and a non-display area disposed on 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;

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

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

[0010] Among them, at least part of the edge of the first bonding portion is indented inward compared with the edge of the display panel. Along the path extending from the first side sub-region to the second side sub-region, the inward indentation width of the edge of the first bonding portion close to the second side sub-region compared with the edge of the display panel gradually increases first and then gradually decreases.

[0011] Optionally, along the path extending from the first side sub-region to the second side sub-region, the inward indentation width of the edge of the first bonding portion close to the second side sub-region compared with the edge of the display panel changes continuously and non-linearly.

[0012] Optionally, the first bonding portion includes a first bonding sub-portion and a second bonding sub-portion. The first bonding sub-portion is disposed close to the second side sub-region, and the second bonding sub-portion is connected to the side of the first bonding sub-portion close to the first side sub-region;

[0013] Among them, the edge of the second bonding sub-portion is indented inward compared with the edge of the display panel. The inward indentation width of the edge of the first bonding sub-portion compared with the edge of the display panel is a first width. Along the path extending from the first side sub-region to the second side sub-region, the first width gradually increases first and then gradually decreases; the inward indentation width of the edge of the second bonding sub-portion compared with the edge of the display panel is a second width, and 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 bonding layer further includes a second bonding portion. The second bonding portion is disposed in the first side sub-region and is connected to the second bonding sub-portion;

[0015] Among them, the edge of the second bonding portion is indented inward compared with the edge of the display panel, and the inward indentation width of the edge of the second bonding portion compared with the edge of the display panel is equal to the second width.

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

[0017] Optionally, the first bonding portion further includes a third bonding sub-portion. The third bonding sub-portion is connected to the side of the first bonding sub-portion close to the second side sub-region;

[0018] Among them, the edge of the third bonding sub-portion is indented inward compared with the edge of the display panel. The inward indentation width of the edge of the first bonding sub-portion compared with the edge of the display panel is a first width, and the inward indentation width of the edge of the third bonding sub-portion compared with 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 is connected to the third adhesive sub-portion;

[0020] Wherein, the edge of the third adhesive portion is indented inward compared with the edge of the display panel, and the inward indentation width of the edge of the third adhesive portion compared with the edge of the display panel is equal to the third width.

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

[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 close to the second side sub-region, 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, which is disposed in the second side sub-region, is connected to the third adhesive sub-portion, and the edge of the third adhesive portion is flush with the edge of the display panel.

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

[0025] Wherein, the corner portion includes a first corner sub-portion, and the first corner sub-portion is correspondingly arranged with the portion where the inward indentation width of the edge of the first adhesive sub-portion gradually decreases. Along the path extending from the first side sub-region to the second side sub-region, the distance between the edge of the first corner sub-portion and the display area gradually decreases.

[0026] Optionally, the distance between the edge of the corner portion and the display area is a first distance. Along the path extending from the first side sub-region to the second side sub-region, the first distance corresponding to a part of the corner portion changes continuously and non-linearly;

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

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

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

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

[0031] In the display module of the embodiment of the present application, by setting the edge of at least part of the first adhesive portion to be indented inward compared to the edge of the display panel, and making the inward indentation width of the edge of the first adhesive portion close to the second side sub-region gradually increase and then gradually decrease along the path extending from the first side sub-region to the second side sub-region, the Gaussian curvature of the part of the display panel corresponding to the corner sub-region close to the second side sub-region can be reduced, thereby reducing or even eliminating the wrinkling phenomenon of the display panel at the corner sub-region, and further improving the appearance and display effect of the display module.

[0032] Other features and advantages of the present application will be described in detail in the subsequent specific implementation part. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] To more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present application. For those skilled in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0034] To more fully understand the present application and its beneficial effects, the following will be described in conjunction with the drawings, where the same reference numerals represent the same parts in the following description.

[0035] Figure 1 Schematic diagram of the display module provided for the embodiment of the present application;

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

[0037] Figure 3 Top view of the first display module provided for the embodiment of the present application;

[0038] Figure 4 For Figure 3 The enlarged schematic diagram at a in

[0039] Figure 5 Top view of the second display module provided for the embodiment of the present application;

[0040] Figure 6 is Figure 5 an enlarged schematic view of part b in

[0041] Figure 7 is a sectional view along the Figure 6 B - B' direction shown in

[0042] Figure 8 is a schematic view of a display device provided by an embodiment of the present application. Specific Embodiments

[0043] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present application.

[0044] An embodiment of the present application provides a display module. The display module includes a flat area and a curved area. The curved area is disposed on the periphery of the flat area. The curved area includes a first side sub - area, a second side sub - area, and a corner sub - area. The corner sub - area is connected between the first side sub - area and the second side sub - area. The display module further 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, and the first adhesive portion is disposed in the corner sub - area. The display panel includes a display area and a non - display area disposed on 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 part of the edge of the first adhesive portion is indented inward compared with the edge of the display panel. Along the path extending from the first side sub - area to the second side sub - area, the inward indentation width of the edge of the first adhesive portion close to the second side sub - area gradually increases first and then gradually decreases compared with the edge of the display panel.

[0045] In the embodiment of the present application, by indenting at least part of the edge of the first adhesive sub - portion inward compared with the edge of the display panel, and making the inward indentation width of the edge of the first adhesive portion close to the second side sub - area gradually increase first 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 part of the display panel corresponding to the corner sub - area close to the second side sub - area can be reduced, so that the wrinkling phenomenon of the display panel at the corner sub - area can be alleviated or even eliminated, and thus the appearance and display effect of the display module can be improved.

[0046] Please refer to Figure 1 , Figure 1Schematic diagram of a display module provided by an embodiment of the present application. The display module 100 includes a flat area A1 and a curved area A2. The curved area A2 is disposed on the periphery of the flat 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 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 disposed opposite to each other, the two second side sub-areas A22 are disposed opposite to each other, and the four corner sub-areas A23 are respectively disposed between adjacent first side sub-areas A21 and second side sub-areas A22.

[0048] Please refer to Figure 2 , Figure 2 is a cross-sectional view along the A-A' direction shown in Figure 1 . 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. 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 refer to Figure 1 and Figure 2 . The part of the cover plate 2 corresponding to the flat area A1 is in a flat state. The parts of the cover plate 2 corresponding to the first side sub-area A21, the second side sub-area A22, and the corner sub-area A23 are all in a curved state and are curved in the direction towards the display panel 1. The part of the display panel 1 corresponding to the flat area A1 is in a flat state. The parts of the display panel 1 corresponding to the first side sub-area A21, the second side sub-area A22, and the corner sub-area A23 are all curved, and the curved shapes of the parts of the display panel 1 corresponding to the first side sub-area A21, the second side sub-area A22, and the corner sub-area A23 are adapted to the curved shape of the cover plate 2.

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

[0051] Please refer to Figure 3 and Figure 4 , Figure 3 is a top view of the first display module provided by an embodiment of the present application. Figure 4 is Figure 3 an enlarged schematic view of the a position in Figure 4The outermost solid contour line is the edge of the cover plate 2, the innermost solid contour line is the boundary line between the flat part and the curved part of the cover plate 2, the outermost dashed contour line is the edge of the display panel 1 (i.e., the edge of the non-display area NA), the middle dashed contour line is the edge of the adhesive layer 3, and the innermost dashed contour line is the edge of the display area AA of the display panel 1.

[0052] In the embodiment of the present application, the width of the non-display area NA at A21 in the first side sub-region is greater than the width of the non-display area NA at the second side sub-region A22. The width of the non-display area NA is the frame width of the display module, that is, the frame width of the display module at the first side sub-region A21 is greater than the frame width at the second side sub-region A22.

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

[0054] Please refer to Figure 3 and Figure 4 , at least a part of the edge of the first adhesive portion 31 is indented inward compared 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 indentation width of the edge of the first adhesive portion 31 compared to the edge of the display panel gradually increases first and then gradually decreases near the second side sub-region A22.

[0055] Please refer to Figure 3 and Figure 4 , the first adhesive portion 31 includes a first adhesive sub-portion 311. The first adhesive sub-portion 311 is disposed near the second side sub-region A22. The edge of the first adhesive sub-portion 311 is indented inward compared 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 indentation width of the edge of the first adhesive sub-portion 311 compared to the edge of the display panel 1 gradually increases first and then gradually decreases.

[0056] Please refer to Figure 3 and Figure 4 , it is set that the inward indentation width of the edge of the first adhesive sub-portion 311 compared to the edge of the display panel 1 is the first width d1. Along the path extending from the first side sub-region A21 to the second side sub-region A22, the first width d1 gradually increases first and then gradually decreases.

[0057] In an embodiment of the present application, by setting the edge of the first bonding sub - portion 311 to be indented inward compared to the edge of the display panel 1, and making the inward - indented width of the edge of the first bonding sub - portion 311 compared to the edge of the display panel 1 gradually increase first and then gradually decrease along the path from the first side sub - region A21 to the second side sub - region A22, the region where the first bonding sub - portion 311 is located is the region where the border width of the display module 100 changes sharply. By making the inward - indented width of the adhesive layer 3 gradually increase first in the region where the border width of the display module 100 changes sharply, the deformation amount of the adhesive layer 3 with a larger inward - indented width after being compressed is increased, so as to increase the bending radius of the display panel 1 corresponding to this part after bending. In this way, the Gaussian curvature of the part of the display panel 1 corresponding to the region where the border width of the display module 100 changes sharply can be reduced, thereby reducing or even eliminating the wrinkling phenomenon of the display panel at the corner sub - region, and further improving the appearance and display effect of the display module.

[0058] In an embodiment of the present application, by making the inward - indented width of the edge of the first bonding sub - portion 311 gradually increase to the maximum value and then gradually decrease, the inward - indented width of the part of the first bonding sub - portion 311 close to the second side sub - region A22 is reduced, so that more adhesive layer 3 can be filled between the edge of the display panel 1 close to the second side sub - region A22 and the cover plate 2, to increase the adhesion force between the display panel 1 and the cover plate 2 in this region and prevent bubbles from generating between the display panel 1 and the cover plate 2 close to the second side sub - region A22.

[0059] In some embodiments, along the path from the first side sub - region A21 to the second side sub - region A22, the inward - indented width of the edge of the first bonding portion 31 close to the second side sub - region A22 compared to the edge of the display panel 1 changes continuously and non - linearly.

[0060] Please refer to Figure 3 and Figure 4 , the inward - indented width of the edge of the first bonding sub - portion 311 compared to the edge of the display panel 1 changes continuously and non - linearly, that is, the edge of the first bonding sub - portion 311 adopts a gradient non - equidistant inward - indented design compared to the edge of the display panel 1, and the inward - indented width of the edge of the first bonding sub - portion 311 shows a trend of gradually increasing first and then gradually decreasing. In this way, not only can the Gaussian curvature of the part of the display panel 1 corresponding to the region where the border width of the display module 100 changes sharply be reduced, so as to reduce or even eliminate the wrinkling phenomenon of the display panel at the corner sub - region, thereby improving the appearance and display effect of the display module, but also bubbles can be prevented from generating between the display panel 1 and the cover plate 2 close to the second side sub - region A22.

[0061] In some embodiments, please refer to Figure 3 and Figure 4, the first bonding portion 31 further includes a second bonding sub-portion 312, and the second bonding sub-portion 312 is connected to a side of the first bonding sub-portion 311 close to the first side sub-region A21. The edge of the second bonding sub-portion 312 is indented inward compared to the edge of the display panel 1. The inward indentation width of the edge of the first bonding sub-portion 311 compared to the edge of the display panel 1 is a first width d1, and the inward indentation width of the edge of the second bonding sub-portion 312 compared 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 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-region A21 to the second side sub-region A22, the second width d2 remains unchanged. At the second bonding sub-portion 312, the inward indentation width of the edge of the bonding layer 3 compared to the edge of the display panel 1 remains unchanged. When transitioning from the second bonding sub-portion 312 to the first bonding sub-portion 311, the inward indentation width of the edge of the bonding layer 3 compared to the edge of the display panel 1 gradually increases to the maximum value and then gradually decreases until it decreases to the minimum value.

[0063] In some embodiments, the bonding layer 3 further includes a second bonding portion 32. The second bonding portion 32 is disposed in the first side sub-region A21, and the second bonding portion 32 is connected to the second bonding sub-portion 312. The edge of the second bonding portion 32 is indented inward compared to the edge of the display panel 1, and the inward indentation width of the edge of the second bonding portion 32 compared to the edge of the display panel 1 is equal to the second width d2.

[0064] Please refer to Figure 4 , it is set that the inward indentation width of the edge of the second bonding portion 32 compared to the edge of the display panel 1 is a fourth width d4, and 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 bonding portion 32, the inward indentation width of the edge of the bonding layer 3 compared to the edge of the display panel 1 remains unchanged and is equal to the inward indentation width of the edge of the bonding layer 3 at the second bonding sub-portion 312 compared to the edge of the display panel 1.

[0065] It should be noted that at the first bonding sub-portion 311, the inward indentation width of the edge of the bonding layer 3 is greater than the inward indentation width of the edge of the second bonding sub-portion 312 at the adjacent corner where the border width is larger. Due to the larger inward indentation width of the edge of the bonding layer 3, even if the bonding layer 3 is subjected to a large force and has a large deformation, there is enough space between the edge of the display panel 1 and the cover plate 2 to accommodate the squeezed and deformed bonding layer 3, thereby reducing the glue overflow phenomenon in the corner region (i.e., the corner sub-region A23) of the Gaussian surface where the force is large.

[0066] In some embodiments, please refer to Figure 4, the first bonding portion 31 further includes a third bonding sub-portion 313. The third bonding sub-portion 313 is connected to the side of the first bonding sub-portion 311 close to the second side sub-region A22. The edge of the third bonding sub-portion 313 is indented inward compared to the edge of the display panel 1, and the inward indentation width of the edge of the third bonding sub-portion 313 compared to the edge of the display panel 1 is the third width d3, and 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-region A21 to the second side sub-region A22, the third width d3 remains unchanged. After the inward indentation width of the edge of the first bonding sub-portion 311 decreases from the maximum value to the minimum value, at the third bonding sub-portion 313, the inward indentation width of the edge of the adhesive layer 3 compared to the edge of the display panel 1 remains unchanged.

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

[0069] Please refer to Figure 4 , it is set that the inward indentation width of the edge of the third bonding portion 33 compared to the edge of the display panel 1 is the fifth width d5. The fifth width d5 is equal to the third width d3. Along the extending direction of the second side sub-region A22, the fifth width d5 remains unchanged, that is, at the third bonding portion 33, the inward indentation width of the edge of the adhesive layer 3 compared to the edge of the display panel 1 remains unchanged, and is equal to the inward indentation width of the edge of the adhesive layer 3 at the third bonding sub-portion 313 compared to the edge of the display panel 1.

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

[0071] In some embodiments, please refer to Figure 3 and Figure 4, the 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, the corner portion 11 is disposed in a corner sub-region A23, and the corner portion 11 includes a first corner sub-portion 111. The first corner sub-portion 111 is correspondingly disposed with a portion where the retracted width of the first bonding portion 31 gradually decreases. Along the path extending from the first side sub-region A21 to the second side sub-region A22, the distance between the edge of the first corner sub-portion 111 and the display area AA gradually decreases.

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

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

[0074] It should be noted that the first corner sub-portion 111 is a region where the frame width of the display module changes sharply. In this region, the width of the first corner sub-portion 111 decreases sharply. By making the edge of the first bonding sub-portion 311 retract first gradually and then gradually decrease compared with the edge of the display panel 1, the distance between the edge of the bonding layer 3 in the region where the frame width changes sharply and the display area AA can be gradually decreased. In this way, the Gaussian curvature of the display panel 1 at the connection of the corner sub-region A23 and the second side sub-region A22 can be reduced, thereby improving the wrinkling phenomenon of the display panel at the corner sub-region A23.

[0075] In some embodiments, refer to Figure 4 , the edge of the display area AA is indented inward compared with the edge of the bonding layer 3. Along the direction from the first side sub-region A21 to the second side sub-region A22, the distance between the edge of the first bonding portion 31 and the display area AA gradually decreases, and the absolute value of the change rate of the distance between the edge of the first bonding portion 31 and the display area AA is less than the absolute value of the change rate of the first distance d6 corresponding to the first corner sub-portion 111. In this way, the distance between the edge of the bonding layer 3 at the corner sub-region A23 and the display area AA can change continuously and smoothly, thereby reducing the Gaussian curvature of the display panel 1 at the connection of the corner sub-region A23 and the second side sub-region A22, and improving the wrinkling phenomenon of the display panel at the corner sub-region A23.

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

[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-region 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-region 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-region A21 and the corner sub-region A23 are both greater than the width of the non-display area NA at the second side sub-region A22.

[0078] In some embodiments, please refer to Figures 5 to 7 , Figure 5 is a top view of the second display module provided by the embodiment of the present application, Figure 6 is Figure 5 an enlarged schematic view of the b position in Figure 7 is a cross-sectional view along the Figure 6 B-B' direction shown in Figures 5 to 7 The structure of the second display module shown in Figures 2 to 4 is substantially the same as the structure of the display module shown in

[0079] In some embodiments, please refer to Figure 5 and Figure 6 , the edge of the third bonding portion 33 is flush with the edge of the display panel 1, so that the adhesive force between the display panel 1 and the cover plate 2 at the second side sub-region A22 can be further increased, and thus the risk of generating bubbles between the display panel 1 and the cover plate 2 at the second side sub-region A22 can be further reduced.

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

[0081] In some embodiments, referring to Figure 2 , the display module 100 further includes a backplane 5, and the backplane 5 is disposed on a side of the display panel 1 away from the cover plate 2.

[0082] In some embodiments, referring to Figure 2 , the display module 100 further includes a support functional layer 6, and the support functional layer 6 is disposed on a side of the backplane 5 away from the display panel 1. The support functional layer 6 is used to cooperate with the backplane 5 to support the display panel 1 and play a role in dissipating heat from the display panel 1.

[0083] In some embodiments, referring to Figure 2 , the support functional layer 6 may include a plurality of stacked sub-layers. For example, it may include 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 having a large elastic deformation performance. The material of the heat dissipation layer 62 includes materials such as graphite having excellent heat conduction or heat dissipation properties. The material of the metal layer 63 includes copper foil, etc.

[0084] In some embodiments, referring to Figure 2 , the display module 100 further includes a light-shielding layer 7, and the light-shielding layer 7 is disposed on the four peripheral edges of the surface of the cover plate 2 close to the display panel 1 and on the side surface of the cover plate 2. The light-shielding layer 7 is partially disposed between the cover plate 2 and the adhesive layer 3. The light-shielding layer 7 is used to block the non-display area at the edge of the display module 100 to avoid light leakage from the non-display area. The material of the light-shielding layer 7 includes ink.

[0085] According to the display module provided in the above embodiments of the present application, the embodiments of the present application further provide a display device. Referring to Figure 8 , Figure 8 is a schematic diagram of the display device provided in the embodiments of the present application. The display device 1000 includes a display module 100 and a housing 200, and the display module 100 is disposed on the housing 200. The display module 100 may be the display module provided in any of the above embodiments. The display device provided in the embodiments of the present application can achieve the same technical effects as the display module provided in any of the above embodiments, and details are not described herein.

[0086] Advantages of the embodiments of the present application: The embodiments of the present application provide a display module. The display module includes a flat 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 further includes a display panel, a cover plate, and an adhesive layer. The adhesive layer includes a first adhesive portion. The first adhesive portion is disposed in the corner sub-area. By setting at least part of the edge of the first adhesive portion to be indented inward compared with the edge of the display panel, and making the inward indentation width of the edge of the first adhesive portion close to the second side sub-area gradually increase and then gradually decrease along the path from the first side sub-area to the second side sub-area, the Gaussian curvature of the part of the display panel corresponding to the corner sub-area close to the second side sub-area can be reduced, so that the wrinkling phenomenon of the display panel at the corner sub-area can be alleviated or even eliminated, and thus the appearance and display effect of the display module can be improved.

[0087] In the description of the present application, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more features. In the description of the present application, "a plurality" means two or more, unless otherwise specifically defined.

[0088] In the above embodiments, the descriptions of the respective embodiments have their own emphases. For parts not detailed in a certain embodiment, reference may be made to the relevant descriptions of other embodiments.

[0089] Among the embodiments, implementation manners, and related technical features of the present application, they can be combined and replaced with each other without conflict.

[0090] The above are only the preferred embodiments of the present application and do not impose any form of limitation on the present application. However, any simple modification, equivalent change, and modification made to the above embodiments based on the technical essence of the present application without departing from the content of the technical solution of the present application still fall within the scope of the technical solution of the present application.

Claims

1. A display module, characterized in that: The display module comprises a plane area and a curved area, wherein the curved area is arranged at the periphery of the plane area, the curved area comprises a first side sub-area, a second side sub-area and a corner sub-area, and the corner sub-area is connected between the first side sub-area and the second side sub-area. The display module comprises: The display panel comprises a display area and a non-display area arranged outside the display area, wherein a width of the non-display area at the first side sub-area is greater than a width of the non-display area at the second side sub-area; A cover plate, disposed on one side of the display panel; An adhesive layer, disposed between the display panel and the cover plate, the adhesive layer comprising a first adhesive portion, and the first adhesive portion is disposed in the corner sub-region; Among them, at least part of the edge of the first adhesive portion is retracted inwardly compared to the edge of the display panel, and on the path extending from the first side sub-region to the second side sub-region, the inward width of the edge of the first adhesive portion near the second side sub-region first gradually increases and then gradually decreases compared to the edge of the display panel.

2. The display module according to claim 1, wherein: Along the path extending from the first side edge sub-region to the second side edge sub-region, the inward shrinkage width of the edge of the first adhesive portion close to the second side edge sub-region changes continuously and nonlinearly compared with the edge of the display panel.

3. The display module according to claim 1, wherein: The first bonding portion includes a first bonding sub-portion and a second bonding sub-portion, the first bonding sub-portion is arranged close to the second side sub-region, and the second bonding sub-portion is connected to a side of the first bonding sub-portion close to the first side sub-region; Among them, the edge of the second bonding sub-portion is indented inwardly compared with the edge of the display panel, and the indented width of the edge of the first bonding sub-portion compared with the edge of the display panel is a first width. Along the path extending from the first side sub-region to the second side sub-region, the first width first gradually increases and then gradually decreases; the edge of the second bonding sub-portion is indented inwardly compared with the edge of the display panel to a second width, the second width is greater than the minimum value of the first width, and the second width is less than the maximum value of the first width.

4. The display module according to claim 3, wherein: The adhesive layer further comprises a second adhesive portion, the second adhesive portion is disposed in the first side edge sub-region, and the second adhesive portion is connected to the second adhesive sub-region; The edge of the second adhesive portion is retracted inwardly compared to the edge of the display panel, and the retracted width of the edge of the second adhesive portion compared to the edge of the display panel is equal to the second width.

5. The display module according to claim 3, wherein: Along the path extending from the first side sub-region to the second side sub-region, the second width remains unchanged.

6. The display module according to claim 3, characterized in that: The first bonding portion further includes a third bonding sub-portion, and the third bonding sub-portion is connected to a side of the first bonding sub-portion close to the second side edge sub-region; Among them, the edge of the third bonding sub-portion is indented inward compared to the edge of the display panel, the indented width of the edge of the first bonding sub-portion compared to the edge of the display panel is a first width, the indented width of the edge of the third bonding sub-portion compared 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.

7. The display module according to claim 6, wherein: The adhesive layer further comprises a third adhesive portion, the third adhesive portion is arranged in the second side edge sub-region, and the third adhesive portion is connected to the third adhesive sub-portion; The edge of the third adhesive portion is retracted inwardly compared to the edge of the display panel, and the retracted width of the edge of the third adhesive portion compared to the edge of the display panel is equal to the third width.

8. The display module according to claim 6, wherein: The third width remains unchanged along a path extending from the first side sub-region to the second side sub-region.

9. The display module according to claim 3, wherein: The first adhesive portion further includes a third adhesive sub-portion, which is connected to a side of the first adhesive sub-portion close to the second side sub-region, and an edge of the third adhesive sub-portion is flush with an edge of the display panel.

10. The display module according to claim 9, wherein: The adhesive layer further includes a third adhesive portion, the third adhesive portion is disposed in the second side sub-region, the third adhesive portion is connected to the third adhesive sub-portion, and an edge of the third adhesive portion is flush with an edge of the display panel.

11. The display module according to any one of claims 1 to 10, characterized in that: The display panel includes a corner portion, and the corner portion is arranged in the corner sub-region; Among them, the corner portion includes a first corner sub-portion, and the first corner sub-portion is arranged corresponding to the part of the edge of the first adhesive portion where the inward width gradually decreases. Along the path extending from the first side sub-region to the second side sub-region, the distance between the edge of the first corner sub-portion and the display area gradually decreases.

12. The display module according to claim 11, wherein: The distance between the edge of the corner portion and the display area is a first distance, and along the path extending from the first side sub-area to the second side sub-area, the first distance corresponding to a part of the corner portion changes continuously and nonlinearly; The absolute value of the change rate of the first distance corresponding to the first corner sub-portion is greater than the absolute value of the change rate of the first distance corresponding to other parts of the corner portion except the first corner sub-portion.

13. The display module according to claim 11, wherein: A distance between an edge of the corner portion and the display area is greater than a width of the non-display area at the second side sub-area.

14. The display module according to any one of claims 1 to 10, characterized in that: The edge of the display area is set inwardly compared 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.

15. A display device, characterized in that: Comprising a display module as described in any one of claims 1 to 14.

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