Display module

Abstract

The embodiment of the application discloses a display module; the first frame area of the display module comprises a first sub-edge area and a first corner area located on both sides of the first edge area, and the first edge area comprises at least a first sub-area; the display module comprises a cover plate, a display panel and a support component; the curvature radius of the cover plate located in the first sub-area in the direction parallel to the first edge is greater than zero; the support component comprises a first back plate and a second back plate; the first back plate is arranged on the side of the display function part close to the binding part; the second back plate is arranged on the side of the binding part close to the display function part; the first back plate comprises a first part located in the first sub-area; the second back plate comprises a second part corresponding to the first part; the distance between the first part and the first edge is greater than the distance between the second part and the first edge; by protruding the second back plate towards the edge more than the first back plate, the support property of the second back plate on the bending part is improved, which is conducive to making the bending part tend to be circular and relieving the abnormal shape of the bending part.

Description

Technical Field

[0001] This application relates to the field of displays, specifically to a display module. Background Technology

[0002] In some curved display modules, the inventors of this application have discovered that the cover plate may include bending in multiple directions at the same position. The bending stress in the bending area of ​​the display panel near the bottom bezel is complex. The bending stress includes the bending stress in the bending direction of the bending part of the display panel itself and the bending stress applied to the bending part in the bending direction of the cover plate. The two bending stresses increase the risk of the bending part of the display panel generating a small-angle bending area and shifting to one side of the cover plate, which can easily lead to the breakage of the circuit in the display panel and the display module exhibiting abnormalities.

[0003] Therefore, there is an urgent need for a display module to solve the above-mentioned technical problems. Summary of the Invention

[0004] This application provides a display module that can improve the technical problem of abnormal shape of the bent part of the display panel in the lower bezel area of ​​the current display module.

[0005] This application provides a display module, including a central area and a first border area located on one side of the central area, the first border area including a first side area and first corner areas located on both sides of the first side area, the display module comprising:

[0006] The display panel includes a display function part located in the central area, a binding part disposed opposite to the display function part, and a bent part connecting the display function part and the binding part;

[0007] A cover plate is disposed on the light-emitting side of the display panel, and the cover plate is disposed within the central area and the first frame area;

[0008] A support component is disposed on one side of the display panel. The support component includes a first back plate and a second back plate disposed opposite to each other. The first back plate is disposed on the side of the display function part near the binding part, and the second back plate is disposed on the side of the binding part near the display function part.

[0009] The display module includes a first edge corresponding to the side of the first border area away from the center area. The first border area includes at least a first sub-area. In a direction parallel to the first edge, the curvature of the cover plate located in the first sub-area is greater than zero. At least a portion of the bent portion is disposed in the first sub-area. The first back plate includes a first portion located in the first sub-area. The second back plate includes a second portion located in the first sub-area and corresponding to the first portion. The distance between the side of the first portion near the first edge and the first edge is greater than the distance between the side of the second portion near the first edge and the first edge.

[0010] In some embodiments, the first side region further includes a second sub-region, the first sub-region being located on the side of the second sub-region closer to the first corner region; wherein the cover plate is fully curved, and the minimum radius of curvature of the cover plate located in the second sub-region is greater than the maximum radius of curvature of the cover plate located in the first sub-region.

[0011] In some embodiments, the second back plate further includes a third portion located within the second sub-region, the third portion being connected to the second portion; the first back plate further includes a fourth portion located within the second sub-region, the fourth portion corresponding to the third portion, the distance between the third portion and the first edge being equal to the distance between the fourth portion and the first edge; wherein, the radius of curvature of the cover plate at any position within the second sub-region is equal, and the radius of curvature of the cover plate within the first sub-region gradually decreases in the direction from the second sub-region to the first corner region.

[0012] In some embodiments, the second back plate further includes a third portion located within the second sub-region and a fifth portion located within the first sub-region. The third portion is connected to the second portion via the fifth portion, and the distance between the fifth portion and the first edge is equal to the distance between the first portion and the first edge. The first back plate further includes a fourth portion located within the second sub-region, which corresponds to the third portion. The distance between the third portion and the first edge is equal to the distance between the fourth portion and the first edge. The radius of curvature of the cover plate is equal at any position within the second sub-region, and gradually decreases from the second sub-region to the first corner region.

[0013] In some embodiments, the second backplate further includes a third portion located within the second sub-region, wherein the distance between the third portion and the first edge is greater than the distance between the second portion and the first edge; wherein, in the direction from the center of the second sub-region to the first corner region, the distance between the third portion and the first edge gradually decreases, and the radius of curvature of the cover plate within the second sub-region gradually decreases; or, wherein the third portion includes a first sub-part and a second sub-part located on both sides of the first sub-part, the first sub-part being connected to the second portion through the second sub-part, and in the direction from the center of the second sub-region to the first corner region, the distance between the first sub-part and the first edge remains constant, the distance between the second sub-part and the first edge gradually decreases, and the radius of curvature of the cover plate within the second sub-region gradually decreases.

[0014] In some embodiments, in the direction from the second sub-region to the first corner region, the distance between the side of the second portion near the first edge and the first edge gradually decreases.

[0015] In some embodiments, the side of the second portion near the first edge is a curved surface.

[0016] In some embodiments, the side of the second portion near the first edge is an arc surface concave to the central area of ​​the display module.

[0017] In some embodiments, the side of the second portion near the first edge is a plane, and the angle between the side of the second portion near the first edge and the side of the first portion near the first edge is greater than 0°.

[0018] In some embodiments, the elastic modulus of the second portion is greater than that of the first portion.

[0019] In some embodiments, the elastic modulus of the second back plate is greater than that of the first back plate.

[0020] In some embodiments, the thickness of the second portion is greater than the thickness of the first portion.

[0021] In some embodiments, the thickness of the second back plate is greater than the thickness of the first back plate.

[0022] In some embodiments, the display module further includes a connecting layer disposed on the surface of the second back panel near the first back panel; the connecting layer includes a sixth portion located within the first sub-region, wherein the distance between the side of the sixth portion near the first edge and the first edge is less than the distance between the side of the first portion near the first edge and the first edge.

[0023] Beneficial effects of this application: By protruding the second part of the second back plate in the first side area further away from the center area than the first part of the first back plate corresponding to the second part, this application improves the support of the second back plate for the bent part of the display panel, which helps to make the arc angle of the bent part more rounded, alleviates the abnormal shape of the bent part near the cover plate, improves the uniformity of the stress on the bent part, reduces the risk of circuit breakage in the display panel, and protects the display module. Attached Figure Description

[0024] 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 accompanying 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.

[0025] Figure 1 This is a top view of the display module provided in an embodiment of this application;

[0026] Figure 2 yes Figure 1 Schematic diagram of the structure along section A1-A2;

[0027] Figure 3 yes Figure 1 A schematic diagram of the first structure along section A3-A4;

[0028] Figure 4 yes Figure 1 A schematic diagram of the second structure along section A3-A4;

[0029] Figure 5 This is an electron microscope image of the lower border area of ​​the display module;

[0030] Figure 6 yes Figure 1 A schematic diagram of the curvature of the cover plate along section A5-A6;

[0031] Figure 7 This is a schematic diagram showing the positional relationship between the first backplate and the second backplate;

[0032] Figure 8 This is a first unfolded schematic diagram of the support component of the display module provided in the embodiments of this application;

[0033] Figure 9 This is a first top view of the support component of the display module provided in the embodiments of this application;

[0034] Figure 10 This is a second unfolded schematic diagram of the support component of the display module provided in the embodiments of this application;

[0035] Figure 11 This is a second top view schematic diagram of the support component of the display module provided in the embodiments of this application;

[0036] Figure 12 This is a third unfolded schematic diagram of the support component of the display module provided in the embodiments of this application;

[0037] Figure 13 This is a third top view of the support component of the display module provided in the embodiments of this application;

[0038] Figure 14 This is a partial top view of the display module provided in the embodiments of this application;

[0039] Figure 15 This is a fourth unfolded schematic diagram of the support component of the display module provided in the embodiments of this application;

[0040] Figure 16 This is a fourth top view of the support component of the display module provided in the embodiments of this application;

[0041] Figure 17 This is a fifth unfolded schematic diagram of the support component of the display module provided in the embodiments of this application;

[0042] Figure 18 This is a fifth top view of the support component of the display module provided in the embodiments of this application;

[0043] Figure 19 This is a schematic diagram of the structure of the display device provided in the embodiments of this application. Detailed Implementation

[0044] 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 the embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. In addition, it should be understood that the specific embodiments described herein are only for illustration and explanation of this application and are not intended to limit this application. In this application, unless otherwise stated, directional terms such as "upper" and "lower" generally refer to the upper and lower positions of the device in actual use or operation, specifically the drawing directions in the accompanying drawings; while "inner" and "outer" refer to the outline of the device.

[0045] Since their inception, display modules have basically fallen into two categories: fixed-curve display modules and foldable display modules. Fixed-curve display modules have a fixed curved surface, with the light-emitting side of the display panel serving as a cover plate. With technological advancements, the appearance design of display modules has become increasingly homogenized. To enhance individuality, diverse designs with varying curvature directions on the cover plate have emerged and gained consumer favor. However, due to the multi-directional curvature design of the cover plate at the same location, the bending stress in the bending area of ​​the display panel near the bottom bezel becomes more complex. This bending stress includes the bending stress in the bending direction of the display panel itself and the bending stress applied to the bending area by the bending direction of the cover plate. This increases the risk of small-angle bending areas in the display panel and shifting towards the cover plate, potentially leading to circuit breakage and display malfunctions.

[0046] Please see Figures 1 to 18 This application provides a display module 100, including a central area AA and a first border area B located on one side of the central area AA. The first border area B includes a first side area B1 and first corner areas B2 located on both sides of the first side area B1. The display module 100 includes:

[0047] The display panel 200 includes a display function part 210 located in the central area AA, a binding part 230 disposed opposite to the display function part 210, and a bending part 220 connecting the display function part 210 and the binding part 230.

[0048] A cover plate 300 is disposed on the light-emitting side of the display panel 200, and the cover plate 300 is disposed within the central area AA and the first border area B;

[0049] A support member 400 is disposed on one side of the display panel 200. The support member 400 includes a first back plate 500 and a second back plate 600 disposed opposite to each other. The first back plate 500 is disposed on the side of the display function part 210 near the binding part 230, and the second back plate 600 is disposed on the side of the binding part 230 near the display function part 210.

[0050] The display module 100 includes a first edge 110 corresponding to the side of the first border area B away from the center area AA. The first border area B1 includes at least a first sub-area C1. In a direction parallel to the first edge 110, the curvature of the cover plate 300 located in the first sub-area C1 is greater than zero. At least a portion of the bent portion 220 is disposed in the first sub-area C1. The first back plate 500 includes at least a first portion 510 located in the first sub-area C1. The second back plate 600 includes at least a second portion 610 located in the first sub-area C1 and corresponding to the first portion 510. The distance between the side of the first portion 510 near the first edge 110 and the first edge 110 is greater than the distance between the side of the second portion 610 near the first edge 110 and the first edge 110.

[0051] This application improves the support of the second back plate for the bent portion of the display panel by making the second part of the second back plate protrude further away from the center area than the first part of the first back plate in the first sub-area C1. This helps to make the arc angle of the bent portion more rounded, alleviates the abnormal shape of the bent portion near the cover plate, improves the uniformity of the stress on the bent portion, reduces the risk of line breakage in the display panel, and protects the display module.

[0052] The technical solution of this application will now be described in conjunction with specific embodiments.

[0053] In this embodiment, please refer to Figure 1 , Figure 3 , Figure 8 , Figure 9 The display module 100 includes a central area AA and a first border area B located on one side of the central area AA. The first border area B includes a first side area B1 and first corner areas B2 located on both sides of the first side area B1. The first side area B1 includes a second sub-area C2 and a first sub-area C1 located on the side of the second sub-area C2 near the first corner area B2. The display module 100 includes a display panel 200, a cover plate 300 disposed on the light-emitting side of the display panel 200, and a support member 400 disposed on one side of the display panel 200. The display panel 200 includes a display function part 210 located in the central area AA, a binding part 230 disposed opposite to the display function part 210, and a bending part 220 connecting the display function part 210 and the binding part 230. The bending part 220 is disposed in the first border area B. The cover plate 300 is disposed in the central area AA and the first border area B.

[0054] Please see Figure 3The display module 100 includes a first edge 110 corresponding to the first frame area B. The cover plate 300 located in the first sub-area C1 has a radius of curvature greater than zero in the direction parallel to the first edge 110. The cover plate 300 located in the first sub-area C1 has a radius of curvature greater than zero in the direction perpendicular to the first edge 110. That is, the cover plate 300 located in the first sub-area C1 has bending stress on the bending portion 220 in the direction parallel to the first edge 110. The minimum radius of curvature of the cover plate 300 located in the second sub-area C2 is greater than the maximum radius of curvature of the cover plate 300 located in the first sub-area C1.

[0055] For ease of description, the diagram and explanation are based on the example of a fully curved cover plate 300. Please refer to [link / reference]. Figure 2 The diagram shows that the cover plate 300 is fully curved. There is no flat surface on the cover plate. Every part of the cover plate is a curved design. For details on the design of the curvature radius of the cover plate, please see the following text.

[0056] Please see Figure 3 The support component 400 includes a first back plate 500 and a second back plate 600 disposed opposite to each other. The first back plate 500 is disposed on the side of the display function part 210 near the binding part 230, and the second back plate 600 is disposed on the side of the binding part 230 near the display function part 210.

[0057] Specifically, the display module may include four border areas, please refer to [link / reference]. Figure 1 , Figure 3 The first border area B can be the lower border area of ​​the display module 100, and the first corner area B2 can be the area between the first border area B and the adjacent border area. The adjacent border area is shown as the right border area E. The first border area B is provided with the bending part 220. The bending part 220 is bent in the lower border area to bend the binding part 230 to the side of the display module 100 away from the light emission side.

[0058] Because the curvature of the cover plate 300 located within the first sub-region C1 in the direction parallel to the first edge 110 is greater than zero (curvature greater than zero means the cover plate is non-planar), or please refer to [link to relevant documentation] Figure 5Due to the design of the full-curved cover plate, the display panel 200 in the first sub-area C1 near the first corner area B2 is subjected to complex stresses. For example, the bending stress includes the bending stress in the bending direction of the display panel itself and the bending stress applied to the bending part in the bending direction of the cover plate. The bending stresses in these two directions interact, easily causing the bending part 220 to exhibit an upward thrust phenomenon on the side near the cover plate 300. This results in a reduction in the arc angle of the bending part 220 on the side near the cover plate 300, creating a small-angle bending area 120 in the bending part 220. The increased stress on the circuitry in the bending part 220 makes it prone to circuit breakage, affecting the display.

[0059] Within the first border area B, the curvature radius of the cover plate 300 is plotted in relation to its location. Within the first border area B, the direction from the center of the second sub-area C2 to the first corner area B2 is shown in the diagram. Figure 6 As shown in Figure (a), the radius of curvature of the cover plate 300 can continuously decrease; or, within the first border area B, in the direction from the center of the second sub-area C2 to the first corner area B2, please refer to... Figure 6 As shown in Figure (b), the radius of curvature of the cover plate 300 can initially remain constant and then gradually decrease, wherein, Figure 6 The straight section in Figure (b) indicates that the radius of curvature of the cover plate 300 remains unchanged. The surface of the cover plate in the corresponding region is still an arc surface. Generally, the radius of curvature of the cover plate near the center of the second sub-region C2 is larger, and the surface of the cover plate may even tend to be flat. Figure 6 In the diagram, the Y-axis represents the radius of curvature of the cover plate 300, the origin of the intersection of the X-axis and the Y-axis represents the center of the second sub-region C2, the positive direction of the X-axis represents the direction from the center of the second sub-region C2 to a first corner region B2, and the negative direction of the X-axis represents the direction from the center of the second sub-region C2 to another first corner region B2.

[0060] The cover plate 300 is fully curved. The minimum radius of curvature of the cover plate 300 located in the second sub-region C2 is greater than the maximum radius of curvature of the cover plate 300 located in the first sub-region C1. The radius of curvature of the cover plate in the first sub-region C1 is smaller, making it easier for the bending portion 220 to generate a small-angle bending region. The cover plate at the boundary between the second sub-region C2 and the first sub-region C1 can be considered part of the second sub-region C2; this extreme position is explained here.

[0061] Please refer to Figure 3The display module 100 includes a first edge 110 corresponding to the first border area B, the first back plate 500 includes a first portion 510 located within the first sub-area C1, and the second back plate 600 includes a second portion 610 located within the first sub-area C1. The distance between the side of the first portion 510 near the first edge 110 and the first edge 110 is greater than the distance between the side of the second portion 610 near the first edge 110 and the first edge 110.

[0062] It is understood that the first backplate 500 may include other portions located within the first sub-region C1 in addition to the first portion 510 within the first sub-region C1; the second backplate 600 may include other portions located within the first sub-region C1 in addition to the second portion 610 within the first sub-region C1, as explained here.

[0063] For details, please refer to Figure 3 For ease of understanding, the first edge 110 can be the side of the bent portion 220 furthest from the central area. The distance between the first portion 510 and the first edge 110 is D1, and the distance between the second portion 610 and the first edge 110 is D2.

[0064] Optionally, the first edge can also be the side of the cover plate away from the central area AA, which is just an example and not a specific limitation.

[0065] The second backplate within the first sub-region protrudes further away from the center area compared to the first backplate. This helps to make the bend's arc angle more rounded, which can be explained as follows: For non-fully curved display modules, please refer to... Figure 7 As shown in Figure (a), when the first back plate 5000 and the second back plate 6000 are flush, the bending portion 2200 can be made into a semi-circular shape, resulting in more even stress distribution on the bending portion 2200. If the side of the first back plate 5000 closest to the bending portion 2200 protrudes towards the side of the second back plate 6000 closest to the bending portion 2200 relative to the side of the second back plate 6000 closest to the bending portion 2200, please refer to [reference needed]. Figure 7 As shown in Figure (b), the small-angle bending area of ​​the bending portion 2200 is shifted towards the first back plate 5000, that is, the small-angle bending area of ​​the bending portion 2200 is shifted towards the cover plate; if the side of the second back plate 6000 near the bending portion 2200 protrudes towards the side of the first back plate 5000 near the bending portion 2200 relative to the side of the first back plate 5000 near the bending portion 2200, please refer to... Figure 7 As shown in Figure (c), the small-angle bending area of ​​the bending portion 2200 is shifted towards the direction of the second back plate 6000, which means that the small-angle bending area of ​​the bending portion 2200 is shifted away from the cover plate.

[0066] Therefore, in the display module, as mentioned above, before the improvement, the inventors of this application found that the bending portion of the display panel in the first sub-area was subject to complex forces, and small-angle bending areas of the bending portion were prone to appearing and shifting towards the cover plate. After the improvement through the technical solution of this application, please refer to... Figure 3 D1 is greater than D2. The side of the second part 610 away from the central area AA is closer to the first edge 110 than the side of the first part 510 away from the central area AA. That is, the side of the second part 610 away from the central area AA is more protruding than the side of the first part 510 away from the central area AA. At least a portion of the bent portion 220 is located in the first sub-area C1. For example, at least a portion of the end face of the bent portion 220 near the first corner area B2 is located in the first sub-area C1. Thus, the second part 610 provides better support for the bent portion 220 of the display panel 200, which helps to pull the small-angle bending area of ​​the bent portion 220 away from the cover plate 300. This helps to make the arc angle of the bent portion 220 tend to be round, alleviate the abnormal shape of the bent portion 220 near the cover plate 300, improve the uniformity of the force on the bent portion 220, reduce the risk of line breakage in the display panel 200, and protect the display module 100.

[0067] It is important to note that for cover plates with typical curvature (such as a four-curved cover plate, where the bending direction at the bottom edge only includes the direction perpendicular to the bottom edge) or cover plates without curvature, during the manufacturing process of the display panel, the cover plate does not experience bending stress parallel to the bottom edge at the bent portion. The risk of small-angle bending areas at the bent portion is low, and any abnormalities in the shape of the bent portion are not obvious or will not lead to any abnormalities. Furthermore, when the first and second back plates are not flush due to tolerance factors, any abnormalities in the shape of the bent portion are not obvious or will not lead to any abnormalities. Therefore, for cover plates with typical curvature or without curvature, there is no incentive for the second back plate to protrude relative to the first back plate as in this application, and there is no correlation between the amount of protrusion of the second back plate relative to the first back plate and the curvature of the cover plate.

[0068] In some embodiments, the difference between D1 and D2 is 50 μm to 150 μm, such as 50 μm, 75 μm, 95 μm, 100 μm, 110 μm, 125 μm, 140 μm, etc. Since the fabrication precision of each film layer and film layer misalignment need to be considered, the protrusion of the second portion 610 away from the first portion 510 towards the side furthest from the central region AA is preferably 50 μm to 150 μm.

[0069] In some embodiments, please refer to Figure 8 , Figure 9The second backplate 600 further includes a third portion 620 located within the second sub-area C2, the third portion 620 being connected to the second portion 610; the first backplate 500 further includes a fourth portion 520 located within the second sub-area C2, the fourth portion 520 corresponding to the third portion 620, the distance between the third portion 620 and the first edge 110 being equal to the distance between the fourth portion 520 and the first edge 110; wherein, please refer to Figure 6 In the straight line phase of Figure (b), the radius of curvature of the cover plate 300 at any position corresponding to the third part 620 is equal, and the radius of curvature of the cover plate 300 at any position within the second sub-region C2 is also equal. Please refer to [link / reference]. Figure 6 In the curve phase of Figure (b), from the second sub-region C2 to the first corner region B2, the radius of curvature of the cover plate 300 in the first sub-region C1 gradually decreases, and the radius of curvature of the cover plate 300 corresponding to the second part 610 gradually decreases.

[0070] The fourth part 520 corresponds to the third part 620, meaning that in the top view direction of the display module, the orthographic projection of the fourth part 520 on the lower border (i.e., the border corresponding to the first border area B) coincides with the orthographic projection of the third part 620 on the lower border (i.e., the border corresponding to the first border area B).

[0071] in, Figure 6 The intersection point between the straight line stage and the curved line stage in Figure (b) is the inflection point of the radius of curvature. Figure 6 The inflection point of the radius of curvature in Figure (b) corresponds to the boundary between the second sub-region C2 and the first sub-region C1. Figure 6 The inflection point of the radius of curvature in Figure (b) corresponds to the boundary between the second part 610 and the third part 620.

[0072] In the first frame area B, the radius of curvature of the cover plate 300 in the second sub-area C2 remains unchanged. In the direction from the second sub-area C2 to the first corner area B2, the radius of curvature of the cover plate 300 in the first sub-area C1 gradually decreases. That is, as the radius of curvature of the cover plate 300 decreases, the side of the second back plate 600 away from the center area AA begins to protrude further away from the center area AA than the side of the first back plate 500 away from the center area AA. Specifically, the amount of protrusion of the second back plate 600 can be adjusted according to the decrease in the radius of curvature of the cover plate 300, thereby alleviating the abnormal shape of the bent part 220 near the cover plate 300, improving the uniformity of the force on the bent part 220, reducing the risk of line breakage in the display panel 200, and protecting the display module 100.

[0073] In some embodiments, please refer to Figure 17 , Figure 18 The second backplate 600 further includes a third portion 620 located within the second sub-region C2 and a fifth portion 630 located within the first sub-region C1. The third portion 620 is connected to the second portion 610 via the fifth portion 630. The distance between the fifth portion 630 and the first edge 110 is equal to the distance between the first portion 610 and the first edge 110. The first backplate 500 also includes a fourth portion 520 located within the second sub-region C2. The fourth portion 520 corresponds to the third portion 620. The distance between the third portion 620 and the first edge 110 is equal to the distance between the fourth portion 520 and the first edge 110. The radius of curvature of the cover plate 300 at any position within the second sub-region C2 is equal, and the radius of curvature of the cover plate 300 in the third portion 620 remains constant. In the direction from the second sub-region C2 to the first corner region B2, for example, please refer to... Figure 6 In the positive X-axis curve portion of Figure (b), the radius of curvature of the cover plate 300 in the first sub-region C1 gradually decreases, the radius of curvature of the cover plate 300 corresponding to the fifth part 630 gradually decreases, and the radius of curvature of the cover plate 300 corresponding to the second part 610 gradually decreases.

[0074] in, Figure 6 The inflection point of the radius of curvature in Figure (b) corresponds to the junction of the fifth part 630 and the third part 620.

[0075] In the first border area B, the radius of curvature of the cover plate 300 corresponding to the third part 620 remains unchanged. From the second sub-area C2 to the first corner area B2, the radius of curvature of the cover plate 300 corresponding to the fifth part 630 gradually decreases, and the radius of curvature of the cover plate 300 corresponding to the second part 610 gradually decreases. The minimum radius of curvature of the cover plate 300 corresponding to the second part 610 is greater than the maximum radius of curvature of the cover plate 300 corresponding to the fifth part 630. That is, in the initial stage of the decrease in the radius of curvature of the cover plate 300, the side of the second back plate 600 away from the center area AA does not protrude further away from the center area AA than the side of the first back plate 500 away from the center area AA. This is because... When the radius of curvature of the cover plate 300 decreases, the stress in each direction interacts with the bending portion 220. The small-angle bending area of ​​the bending portion 220 may not appear or the angle change is not significant. In this case, it is not necessary to make the second back plate 600 protrude. In the area further away from the second sub-area C2, the second back plate 600 is made to protrude, that is, the distance between the second part 610 and the first edge 110 is less than the distance between the first part 510 and the first edge 110. This reduces the impact on the normal curvature area of ​​the bending portion 220, reduces the risk of the formation of the small-angle bending area of ​​the bending portion 220, improves the uniformity of the stress on the bending portion 220, reduces the risk of line breakage in the display panel 200, and protects the display module 100.

[0076] In some embodiments, please refer to Figure 13 The second backplate 600 also includes a third portion 620 located within the second sub-region C2, wherein the distance between the third portion 620 and the first edge 110 is greater than the distance between the second portion 610 and the first edge 110.

[0077] This application can focus on optimizing the second backplate 600 within the first sub-region C1. The second sub-part protrudes further away from the central region AA than the third part 620. For the third part 620, please refer to [link to relevant documentation]. Figure 13 The third portion 620 of the second back plate 600 within the second sub-region C2 may protrude further away from the central region AA than the fourth portion 520.

[0078] Alternatively, please see Figure 9 The second backplate 600 in the second sub-area C2 can also be flush with the first backplate 500, that is, the third part 620 is flush with the fourth part 520.

[0079] In some embodiments, specific details may apply to any embodiment of this application; please refer to [link / reference]. Figure 13From the center of the second sub-region C2 to the first corner region B2, the distance between the third portion 620 and the first edge 110 gradually decreases; for example, it can be seen that... Figure 6 The cover plate of Figure (a) has a gradually decreasing radius of curvature in the second sub-region C2, extending from the center of the second sub-region C2 to the first corner region B2. See also... Figure 12 During manufacturing, the second back plate 600 of the first side area B1 is optimized as a whole to enhance the support of the bending part 220 in the first side area B1, alleviate the abnormal shape of the bending part 220 near the cover plate 300, improve the uniformity of the force on the bending part 220, reduce the risk of line breakage in the display panel 200, and protect the display module 100.

[0080] Alternatively, it can be applied to any embodiment of this application; please refer to [link / reference]. Figure 16 The third part 620 includes a first sub-part 621 and a second sub-part 622 located on both sides of the first sub-part 621. The first sub-part 621 is connected to the second part 610 through the second sub-part 622. In the direction from the center of the second sub-region C2 to the first corner region B2, the distance between the first sub-part 621 and the first edge 110 remains constant, while the distance between the second sub-part 622 and the first edge 110 gradually decreases. For example, see [reference needed]. Figure 6 The cover plate of Figure (a) has a gradually decreasing radius of curvature in the second sub-region C2 in the direction from the center of the second sub-region C2 to the first corner region B2.

[0081] Please see Figure 15 During manufacturing, a portion of the second backplate 600 of the first side region B1 is optimized, for example, it can be paired with... Figure 6 The cover plate of Figure (a) has the second back plate 600, near the center of the second sub-region C2, kept flush with the first back plate 500. This reduces the amount of the second back plate 600 protruding from the first back plate 500 of the second sub-region C2 away from the center region AA, and reduces the risk of the small-angle bending area of ​​the bending portion 220 shifting towards the second back plate 600. Please refer to... Figure 16 The second back plate 600 (i.e., the second sub-section 622) near the first sub-section C1 protrudes further away from the center area AA compared to the first back plate 500 of the first sub-section C1. This alleviates the abnormal shape of the bent portion 220 near the cover plate 300, improves the uniformity of the force on the bent portion 220, reduces the risk of line breakage in the display panel 200, and protects the display module 100.

[0082] In some embodiments, please refer to Figures 8 to 11In the direction from the second sub-region C2 to the first corner region B2, the distance between the side of the second portion 610 near the first edge 110 and the first edge 110 gradually decreases.

[0083] For easier understanding, please refer to the top view of the unfolded support component 400. Figure 8 The unfolded top view shows the state before the display panel is bent and bound. Please refer to the figure for the direction from the second sub-area C2 to the first corner area B2. Figure 9 The distance between the second part 610 and the first part 510 gradually decreases. In the direction from the second sub-region C2 to the first corner region B2, the distance between the second part 610 and the first edge 110 gradually decreases. The second part 610 protrudes further away from the center region AA than the first part 510. The further away from the second sub-region C2, the smaller the radius of curvature of the cover plate 300. Consequently, the bending stress on the bent portion 220 of the display panel 200 is greater, making it more prone to small corners. The second part 610 protrudes further away from the center area AA than the first part 510, providing better support for the bent portion 220 of the display panel 200. This makes it easier to pull the small-angle bent area of ​​the bent portion 220 away from the cover plate 300, thereby making the arc angle of the bent portion 220 more rounded, alleviating the abnormal shape of the bent portion 220 near the cover plate 300, improving the uniformity of the force on the bent portion 220, reducing the risk of circuit breakage in the display panel 200, and protecting the display module 100.

[0084] In some embodiments, please refer to Figure 11 The side of the second portion 610 closest to the first edge 110 is flat, and the angle between the side of the second portion 610 closest to the first edge 110 and the side of the first portion 510 closest to the first edge 110 is greater than 0°. Please refer to [link / reference]. Figure 10 The second part 610 has a flat side near the first edge 110, which is easy to process and facilitates production, speeding up production efficiency. At the same time, it is more conducive to making the arc angle of the bending part 220 tend to be round, alleviating the abnormal shape of the bending part 220 near the cover plate 300, improving the uniformity of the force on the bending part 220, reducing the risk of line breakage in the display panel 200, and protecting the display module 100.

[0085] In some embodiments, please refer to Figure 9 The side of the second portion 610 closest to the first edge 110 is curved. (See also...) Figure 6 It can be observed in the areas near both sides of the first border region, such as within the first sub-region C1 ( Figure 6 Not shown in the figure, it can be Figure 6 The curvature radius of the cover plate 300 is an arc-shaped curve (the curved section near both sides of the middle). The display panel 200 is attached to the cover plate 300, and the bent portion 220 of the display panel 200 will also show a similar change. Therefore, making the side of the second part 610 near the first edge 110 an arc surface is beneficial to matching the changing trend of the bent portion 220 of the display panel 200, and better pulling the small-angle bending area of ​​the bent portion 220 away from the cover plate 300. This helps to make the arc angle of the bent portion 220 tend to be round, alleviate the abnormal shape of the bent portion 220 near the cover plate 300, improve the uniformity of the force on the bent portion 220, reduce the risk of line breakage in the display panel 200, and protect the display module 100.

[0086] In some embodiments, please refer to Figure 9 The side of the second part 610 near the first edge 110 is a concave arc surface of the central area AA of the display module. Before the improvement, within the first sub-region, when the bending angle is the same, the bending radius of the bending portion further away from the second sub-region changes more significantly, the small-angle bending area of ​​the bending portion is closer to the cover plate side, the bending stress is stronger, and the risk of damage to the bending portion 220 is greater. With the technical solution of this application, the side of the second part 610 near the first edge 110 is a concave arc surface away from the display module 100. This allows the rate of increase in the protrusion of the second part 610 to increase faster and faster, thus helping to match the trend that the small-angle bending area of ​​the bending portion 220 further away from the second sub-region C2 is closer to the cover plate 300. This better pulls the small-angle bending area of ​​the bending portion 220 away from the cover plate 300, thereby helping to make the arc angle of the bending portion 220 more rounded, alleviating the abnormal shape of the bending portion 220 near the cover plate 300, improving the uniformity of the stress on the bending portion 220, reducing the risk of line breakage in the display panel 200, and protecting the display module 100.

[0087] Please see Figure 16 In the direction parallel to the bottom of the first border area B (including B2, C2, C1), the ratio of the width of the first sub-part 621 to the width of the second sub-part 622 can be determined as appropriate, such as 1:1, 1:2, 2:1, 1:3, 3:1, etc., and is not specifically limited here.

[0088] In some embodiments, applicable to any embodiment of this application, the elastic modulus of the second portion 610 is greater than that of the first portion 510. A higher elastic modulus results in greater stiffness of the film layer, thus providing better support performance. The second portion 610 offers better support than the first portion 510, reducing the risk of small-angle bending areas forming in the bending portion 220, improving the uniformity of stress on the bending portion 220, reducing the risk of line breakage in the display panel 200, and protecting the display module 100.

[0089] In some embodiments, applicable to any embodiment of this application, the elastic modulus of the second back plate 600 is greater than that of the first back plate 500. In the manufacturing process, the second back plate 600 and the first back plate 500 are separately disposed, making it easy to form the first back plate 500 and the second back plate 600 with different elastic moduli. This process is simple, low-cost, and highly feasible.

[0090] In some embodiments, applicable to any of the embodiments of this application, the elastic modulus of the first backplate 500 is 1 GPa to 3 GPa, and the elastic modulus of the second backplate 600 is 3 GPa to 5 GPa. Specifically, the elastic modulus of the first backplate 500 can be 1 GPa, 1.5 GPa, 2 GPa, 2.5 GPa, 3 GPa, etc., and the elastic modulus of the second backplate 600 can be 3 GPa, 3.5 GPa, 4 GPa, 4.5 GPa, 5 GPa, etc.

[0091] In some embodiments, applicable to any embodiment of this application, the material of the first backplate 500 may be COP (Cyclo Olefin Polymer), and the material of the second backplate 600 may be PET (Polyethylene Terephthalate). This is an example and is not a specific limitation.

[0092] In some embodiments, this may be applicable to any of the embodiments of this application. Please refer to [link / reference]. Figure 3 , Figure 4 The thickness of the second part 610 is greater than that of the first part 510. The greater the thickness, the stronger the structural support. The second part 610 has better support than the first part 510, reducing the risk of small-angle bending areas forming in the bending part 220, improving the uniformity of stress on the bending part 220, reducing the risk of line breakage in the display panel 200, and protecting the display module 100.

[0093] In some embodiments, this may be applicable to any of the embodiments of this application. Please refer to [link / reference]. Figure 3 , Figure 4The thickness of the second backplate 600 is greater than the thickness of the first backplate 500. In the manufacturing process, the second backplate 600 and the first backplate 500 are separately set, which makes it easy to form the first backplate 500 and the second backplate 600 with different thicknesses. The forming process is simple, low-cost, and highly feasible.

[0094] In some embodiments, applicable to any of the embodiments of this application, the thickness of the first backplate 500 is 85 μm to 95 μm, and the thickness of the second backplate 600 is 100 μm to 150 μm. Specifically, the thickness of the first backplate 500 can be 85 μm, 88 μm, 90 μm, 93 μm, 95 μm, etc., and the thickness of the second backplate 600 can be 100 μm, 110 μm, 115 μm, 120 μm, 125 μm, 135 μm, 150 μm, etc.

[0095] In some embodiments, this may be applicable to any of the embodiments of this application. Please refer to [link / reference]. Figure 4 The display module 100 further includes a connection layer 700 disposed on the surface of the second back plate 600 near the first back plate 500; the connection layer 700 includes a sixth portion 710 located in the first sub-region C1, and the distance between the sixth portion 710 and the first edge 110 is less than the distance between the first portion 510 and the first edge 110.

[0096] Please see Figure 14 This can be applied to any embodiment of this application. The sixth portion 710 of the connecting layer 700 has a protruding structure that protrudes away from the central region AA compared to the first portion 510 of the first back plate 500. Please refer to [link / reference]. Figure 4 The distance D3 between the side of the sixth part 710 away from the central area AA and the first edge 110 is less than the distance D1 between the side of the first part 510 away from the central area AA and the first edge 110, where D3 < D1. This allows it to provide auxiliary support for the second part 610, strengthen the support for the bent part 220, reduce the risk of small-angle bending areas forming in the bent part 220, improve the uniformity of force on the bent part 220, reduce the risk of line breakage in the display panel 200, and protect the display module 100.

[0097] In some embodiments, the elastic modulus of the connecting layer 700 is greater than that of the second back plate 600, so as to provide better support for the second back plate 600, strengthen the support for the bending portion 220, and reduce the risk of small-angle bending areas forming in the bending portion 220.

[0098] In some embodiments, the connecting layer 700 can be a multi-layer structure, wherein a material with a high elastic modulus and strong support is provided to increase stiffness. The specific material can be selected according to the actual situation, and no specific limitation is made.

[0099] In some embodiments, please refer to Figure 4 , Figure 14 The distance between the sixth portion 710 and the first edge 110 is greater than the distance between the second portion 610 and the first edge 110.

[0100] Please see Figure 4 The distance D3 between the side of the sixth part 710 away from the central area AA and the first edge 110 is greater than the distance D2 between the side of the second part 610 away from the central area AA and the first edge 110, where D3 > D2. The second part 610 serves as the main support structure, and the amount of the second part 610 protruding away from the central area AA from the first part 510 is greater than the amount of the sixth part 710 protruding away from the central area AA from the first part 510. This ensures the support performance of the second part 610 and avoids the sixth part 710, which is an auxiliary support, from protruding too much from the first part 510 away from the central area AA, thus preventing the bent portion 220 of the display panel 200 from being subjected to excessive pressure and protecting the display panel 200.

[0101] All comparisons of the above distances are made at the same position in the top view direction of the display module 100.

[0102] In some embodiments, please refer to Figure 3 , Figure 4 The display module 100 further includes a polarizing layer 810 located between the display panel 200 and the cover plate 300, and an adhesive layer 820 located between the polarizing layer and the cover plate 300.

[0103] In some embodiments, please refer to the display module. Figure 3 , Figure 4 The display module 100 also includes a drive unit 830 electrically connected to the bonding part 230.

[0104] In some embodiments, the display module may be a mobile phone module; this is only an example and not a specific limitation.

[0105] The first sub-region is closer to the first corner region than the second sub-region. The radius of curvature of the cover plate in the first sub-region is smaller than that in the second sub-region. The bending part is more prone to abnormal bending angle in the first sub-region. This application improves the support of the second back plate for the bending part of the display panel by protruding the second back plate in the first sub-region further away from the center region than the first back plate. This helps to make the arc angle of the bending part tend to be round, alleviates the abnormal shape of the bending part near the cover plate, improves the uniformity of the force on the bending part, reduces the risk of line breakage in the display panel, and protects the display module.

[0106] Please see Figure 19 The present invention also provides a display device 10, including any of the display modules 100 described above.

[0107] For the specific structure of the display module 100, please refer to any of the above-mentioned embodiments of the display module 100 and the accompanying drawings, which will not be repeated here.

[0108] In this embodiment, please refer to Figure 19 The display device 10 also includes a device body 20, which is integrated with the display module 100.

[0109] In this embodiment, the main body 20 of the device may include a frame, frame adhesive, etc., and the display device 10 may be a mobile phone. This is only an example and is not a specific limitation.

[0110] This application discloses a display module; the first frame area of ​​the display module includes a first sub-frame area and first corner areas located on both sides of the first frame area. The first frame area includes at least the first sub-frame area. The display module includes a cover plate, a display panel, and a support component. The cover plate located in the first sub-frame area has a radius of curvature greater than zero in the direction parallel to the first edge. The support component includes a first back plate and a second back plate. The first back plate is disposed on the side of the display functional part near the binding part, and the second back plate is disposed on the side of the binding part near the display functional part. The first back plate includes a first part located in the first sub-frame area, and the second back plate includes a second part corresponding to the first part. The distance between the first part and the first edge is greater than the distance between the second part and the first edge. This application improves the support of the second back plate for the bent part by making the bent part tend to be round, which helps to alleviate the abnormal shape of the bent part.

[0111] The above provides a detailed description of a display module provided in the embodiments of this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A display module, characterized in that, The display module includes a central area and a first border area located on one side of the central area. The first border area includes a first side area and first corner areas located on both sides of the first side area. The display panel includes a display function part located in the central area, a binding part disposed opposite to the display function part, and a bent part connecting the display function part and the binding part; A cover plate is disposed on the light-emitting side of the display panel, and the cover plate is disposed within the central area and the first frame area; A support component is disposed on one side of the display panel. The support component includes a first back plate and a second back plate disposed opposite to each other. The first back plate is disposed on the side of the display function part near the binding part, and the second back plate is disposed on the side of the binding part near the display function part. The display module includes a first edge corresponding to the side of the first border area away from the center area. The first border area includes at least a first sub-area. In a direction parallel to the first edge, the curvature of the cover plate located in the first sub-area is greater than zero. At least a portion of the bent portion is disposed in the first sub-area. The first back plate includes a first portion located in the first sub-area. The second back plate includes a second portion located in the first sub-area and corresponding to the first portion. The distance between the side of the first portion near the first edge and the first edge is greater than the distance between the side of the second portion near the first edge and the first edge. The first border area also includes a second sub-area. The first sub-area is located on the side of the second sub-area near the first corner area. The cover plate is fully curved. The minimum radius of curvature of the cover plate located in the second sub-area is greater than the maximum radius of curvature of the cover plate located in the first sub-area.

2. The display module according to claim 1, characterized in that, The second back panel also includes a third portion located within the second sub-area, the third portion being connected to the second portion; The first backplate also includes a fourth portion located within the second sub-area, the fourth portion corresponding to the third portion, and the distance between the third portion and the first edge being equal to the distance between the fourth portion and the first edge; Wherein, the radius of curvature of the cover plate at any position within the second sub-region is equal, and the radius of curvature of the cover plate within the first sub-region gradually decreases in the direction from the second sub-region to the first corner region.

3. The display module according to claim 1, characterized in that, The second back panel also includes a third part located in the second sub-area and a fifth part located in the first sub-area. The third part is connected to the second part through the fifth part, and the distance between the fifth part and the first edge is equal to the distance between the first part and the first edge. The first backplate also includes a fourth portion located within the second sub-area, the fourth portion corresponding to the third portion, and the distance between the third portion and the first edge being equal to the distance between the fourth portion and the first edge; Wherein, the radius of curvature of the cover plate at any position within the second sub-region is equal, and the radius of curvature of the cover plate within the first sub-region gradually decreases in the direction from the second sub-region to the first corner region.

4. The display module according to claim 1, characterized in that, The second backplate also includes a third portion located within the second sub-area, wherein the distance between the third portion and the first edge is greater than the distance between the second portion and the first edge; In the direction from the center of the second sub-region to the first corner region, the distance between the third part and the first edge gradually decreases, and the radius of curvature of the cover plate in the second sub-region gradually decreases; Alternatively, the third part includes a first sub-part and a second sub-part located on both sides of the first sub-part. The first sub-part is connected to the second part through the second sub-part. In the direction from the center of the second sub-region to the first corner region, the distance between the first sub-part and the first edge remains constant, while the distance between the second sub-part and the first edge gradually decreases. The radius of curvature of the cover plate in the second sub-region gradually decreases.

5. The display module according to claim 1, characterized in that, In the direction from the second sub-region to the first corner region, the distance between the side of the second portion near the first edge and the first edge gradually decreases.

6. The display module according to claim 5, characterized in that, The side of the second part closest to the first edge is curved.

7. The display module according to claim 6, characterized in that, The side of the second part near the first edge is an arc surface concave to the central area of ​​the display module.

8. The display module according to claim 5, characterized in that, The side of the second part closest to the first edge is a plane, and the angle between the side of the second part closest to the first edge and the side of the first part closest to the first edge is greater than 0°.

9. The display module according to claim 1, characterized in that, The elastic modulus of the second part is greater than that of the first part.

10. The display module according to claim 9, characterized in that, The elastic modulus of the second back plate is greater than that of the first back plate.

11. The display module according to claim 1, characterized in that, The thickness of the second part is greater than the thickness of the first part.

12. The display module according to claim 11, characterized in that, The thickness of the second back plate is greater than the thickness of the first back plate.

13. The display module according to claim 1, characterized in that, The display module further includes a connecting layer disposed on the surface of the second back plate near the first back plate; The connecting layer includes a sixth portion located within the first sub-region, wherein the distance between the side of the sixth portion near the first edge and the first edge is less than the distance between the side of the first portion near the first edge and the first edge.

Images