Display module and display device

Abstract

A display module (000) and a display device. The display module (000) comprises: a display panel (100), a first cover plate (200), a second cover plate (300) and a filling part (400). The display panel (100) can be folded or unfolded via a bending area (P) of the display panel (100). The outer contour of the second cover plate (300), which is located on the side of the first cover plate (200) facing away from the display panel (100), protrudes beyond the outer contour of the first cover plate (200). The filling part (400) is located on the outer contour of the first cover plate (200) and distributed between the second cover plate (300) and the display panel (100), and the filling part (400) is at least distributed within the bending area (P) of the display panel (100). Within the bending area (P) of the display panel (100), the filling part (400) can fill the step difference between the outer contour of the first cover plate (200) and the outer contour of the second cover plate (300), thereby ensuring that the portion of the outer contour of the first cover plate (200) located within the bending area (P) can be covered by the filling part (400). The possibility of air bubbles forming at the outer contour of the first cover plate (200) during bending of the display panel (100) via the bending area (P) is prevented, thereby ensuring the reliability of the display module (000).

Description

Display modules and display devices

[0001] This application claims priority to Chinese Patent Application No. 202411223925.2, filed on September 2, 2024, entitled “Display Module and Display Device”, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of display technology, and in particular to a display module and display device. Background Technology

[0003] The display module in the display device may include a display panel, a first cover plate, and a second cover plate. The display panel can be used to display images, and the first and second cover plates can be stacked on the display side of the display panel, and both the first and second cover plates can be used to protect the display panel. The display panel and the first cover plate, as well as the first and second cover plates, can be connected together by optical adhesive.

[0004] Currently, in order to achieve narrow bezels in display modules, the edges of the display module need to be cut after the display panel, the first cover plate, and the second cover plate are connected together to remove the edge portion of the display module. However, the first cover plate is relatively easy to break. To protect the first cover plate, it can be recessed relative to the second cover plate to avoid cutting the first cover plate.

[0005] However, currently, after the first cover plate is recessed relative to the second cover plate, air bubbles are more likely to form at the edge of the first cover plate and between the optical adhesive, resulting in a reduced lifespan of the display module. Summary of the Invention

[0006] This application provides a display module and a display device. It solves the problem of air bubbles easily forming at the outer contour of the first cover plate in existing display modules. The technical solution is as follows:

[0007] On the one hand, a display module is provided, including: a display panel, a first cover plate, a second cover plate, and a filling portion;

[0008] The display panel has a bending area;

[0009] The first cover plate is located on the display side of the display panel;

[0010] The second cover plate is located on the side of the first cover plate away from the display panel, and the outer contour of the second cover plate protrudes beyond the outer contour of the first cover plate.

[0011] The filling portion is located on the outer contour of the first cover plate and is distributed between the second cover plate and the display panel;

[0012] The filling portion is distributed at least within the bending area.

[0013] Optionally, the filling portion includes: a body portion and an overflow portion connected together; the body portion is located on the outer contour of the first cover plate, and the overflow portion is located at least on the side of the body portion opposite to the second cover plate.

[0014] Optionally, the maximum distance between the side of the overflow portion away from the second cover plate and the side of the first cover plate away from the second cover plate is less than or equal to the thickness of the first cover plate.

[0015] Optionally, the maximum distance between the side of the overflow portion away from the second cover plate and the side of the first cover plate away from the second cover plate is less than or equal to 30 micrometers, and the thickness of the first cover plate ranges from 20 micrometers to 50 micrometers.

[0016] Optionally, the overflow portion includes: a first sub-overflow portion and a second sub-overflow portion; the first sub-overflow portion is located on the side of the main body portion away from the second cover plate, and the second sub-overflow portion is located on the side of the first cover plate away from the second cover plate.

[0017] Optionally, the distance between the side of the second sub-overflow portion away from the second cover plate and the side of the first cover plate away from the second cover plate gradually decreases to zero along the direction from the first sub-overflow portion toward the second sub-overflow portion.

[0018] Optionally, the angle between the side of the second sub-overflow portion away from the second cover plate and the side of the first cover plate away from the second cover plate ranges from 0° to 45°.

[0019] Optionally, in the direction parallel to the bending axis of the bending area, the ratio of the maximum width of the second sub-overflow portion to the maximum width of the main body portion is less than or equal to 1.5.

[0020] Optionally, in the direction parallel to the bending axis of the bending area, the maximum width of the second sub-overflow portion is less than or equal to 0.45 mm, and the maximum width of the main body portion ranges from 0.3 mm to 1.5 mm.

[0021] Optionally, the outer contour of the first cover plate has a groove, the groove being located at least within the bending area;

[0022] At least a portion of the filling portion is located within the groove.

[0023] Optionally, in the extension direction parallel to the bending axis of the bending area, the maximum width of the body portion in the filling portion is greater than or equal to the maximum width of the groove.

[0024] Optionally, the maximum width of the groove in the direction parallel to the bending axis of the bending area ranges from 0.3 mm to 0.8 mm.

[0025] Optionally, on the display side parallel to the display panel and perpendicular to the bending axis of the bending area, the length of the groove is greater than or equal to the width of the bending area.

[0026] Furthermore, on the display side parallel to the display panel and in a direction perpendicular to the bending axis of the bending area, the length of the filling portion is less than the length of the groove and greater than or equal to the width of the bending area; or, the length of the filling portion is greater than or equal to the length of the groove.

[0027] Optionally, in a direction parallel to the display side of the display panel and perpendicular to the bending axis of the bending area, the difference between the length of the groove and the width of the bending area is less than or equal to 10 mm.

[0028] Optionally, the display panel includes: two bending areas, one of which is an inner bending area and the other is an outer bending area; a groove located on the outer contour of the first cover plate and at least distributed in the inner bending area is a first groove, and a groove located on the outer contour of the first cover plate and at least distributed in the outer bending area is a second groove.

[0029] Specifically, on the display side parallel to the display panel and perpendicular to the bending axis of the bending area, the width of the inner bending area is smaller than the width of the outer bending area, and the length of the first groove is smaller than the length of the second groove.

[0030] Optionally, in a direction parallel to the display side of the display panel and perpendicular to the bending axis of the bending area, the length of the first groove ranges from 10 mm to 15 mm, and the length of the second groove ranges from 12 mm to 18 mm.

[0031] Optionally, the orthographic projection of the first cover plate onto the second cover plate is located within the area enclosed by the outer contour of the second cover plate, and the distance between the outer contour of the first cover plate and the outer contour of the second cover plate ranges from 0.1 mm to 0.3 mm.

[0032] Optionally, the display module further includes: a first colloidal layer and a second colloidal layer, wherein the first colloidal layer is located between the first cover plate and the second cover plate, and the second colloidal layer is located between the first cover plate and the display panel;

[0033] Wherein, all of the filling portion is located between the first colloidal layer and the second colloidal layer;

[0034] Alternatively, a portion of the filling portion may be located between the first colloidal layer and the second colloidal layer, and another portion may be located between the second cover plate and the display panel;

[0035] Alternatively, the filling portion may be located at least between the second cover plate and the second colloidal layer.

[0036] Optionally, the filling portion is made of at least one of transparent material, reflective material, and light-absorbing material.

[0037] On the other hand, a display device is also provided, including: a folding housing, and a display module connected to the folding housing, wherein the display module is any of the display modules described above.

[0038] The beneficial effects of the technical solutions provided in this application include at least the following:

[0039] The display panel in the display module can be folded or unfolded through its bending area. The first and second cover plates fold along with the display panel, and the outer contour of the second cover plate, located on the side of the first cover plate opposite to the display panel, protrudes beyond the outer contour of the first cover plate. A filling portion can be located on the outer contour of the first cover plate and can be distributed between the second cover plate and the display panel. Specifically, the filling portion in the display module can be distributed at least within the bending area of ​​the display panel. Thus, within the bending area of ​​the display panel, the filling portion can fill the gap between the outer contours of the first and second cover plates, ensuring that the portion of the first cover plate's outer contour located within the bending area is covered by the filling portion. This prevents voids from forming between the second cover plate and the portion of the first cover plate's outer contour located within the bending area during the bending process of the display panel, thereby avoiding the possibility of air bubbles forming at the outer contour of the first cover plate and ensuring the reliability of the display module. Attached Figure Description

[0040] 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.

[0041] Figure 1 is a top view of a display module provided in an embodiment of this application;

[0042] Figure 2 is a cross-sectional view of the display module shown in Figure 1 at point A-A';

[0043] Figure 3 is a top view of a display module provided in another embodiment of this application;

[0044] Figure 4 is a top view of another display module provided in an embodiment of this application;

[0045] Figure 5 is a cross-sectional view of the display module shown in Figure 4 at point B-B';

[0046] Figure 6 is a top view of another display module provided in an embodiment of this application;

[0047] Figure 7 is a cross-sectional view of the display module shown in Figure 6 at point C-C';

[0048] Figure 8 is a top view of another display module provided in an embodiment of this application;

[0049] Figure 9 is a top view of another display module provided in yet another embodiment of this application;

[0050] Figure 10 is a top view of a display module provided in another embodiment of this application;

[0051] Figure 11 is a top view of yet another display module provided in another embodiment of this application;

[0052] Figure 12 is a top view of yet another display panel provided in another embodiment of this application;

[0053] Figure 13 is a top view of another display module provided in another embodiment of this application;

[0054] Figure 14 is a top view of another display module provided in another embodiment of this application;

[0055] Figure 15 is a top view of another display module provided in another embodiment of this application;

[0056] Figure 16 is a cross-sectional view of the film layer of a display module provided in an embodiment of this application;

[0057] Figure 17 is a cross-sectional view of the film layer of another display module provided in an embodiment of this application;

[0058] Figure 18 is a cross-sectional view of the film layer of another display module provided in an embodiment of this application;

[0059] Figure 19 is a cross-sectional view of the film layer of another display module provided in an embodiment of this application;

[0060] Figure 20 is a cross-sectional view of the film layer of a display module provided in another embodiment of this application;

[0061] Figure 21 is a cross-sectional view of the film layer of another display module provided in another embodiment of this application;

[0062] Figure 22 is a cross-sectional view of the film layer of another display module provided in another embodiment of this application;

[0063] Figure 23 is a cross-sectional view of the film layer of another display module provided in another embodiment of this application;

[0064] Figure 24 is a cross-sectional view of the film layer of a display module provided in another embodiment of this application;

[0065] Figure 25 is a cross-sectional view of the film layer of another display module provided in another embodiment of this application. Detailed Implementation

[0066] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0067] This application provides a display module. Please refer to Figures 1 and 2. Figure 1 is a top view of a display module provided in this application embodiment, and Figure 2 is a cross-sectional view of the display module shown in Figure 1 at point A-A'. The display module 000 may include: a display panel 100, a first cover plate 200, a second cover plate 300, and a filling portion 400.

[0068] The display panel 100 in the display module 000 has a bending area P. The display panel 100 can be folded or unfolded through the bending area P, that is, the display panel 100 can be a foldable display panel, and thus the display module 000 having the display panel 100 can be a foldable display module.

[0069] The first cover plate 200 in the display module 000 can be located on the display side of the display panel 100. Here, the display side of the display panel 100 in the display module 000 can be used to display images, and the first cover plate 200 can protect the display side of the display panel 100. For example, the first cover plate 100 in the display module 000 can be an ultra-thin flexible glass cover plate (UTG). In this way, the first cover plate 100 not only has high rigidity to protect the display panel 100, but also has good flexibility to fold as the display panel 100 is folded.

[0070] The second cover plate 300 in the display module 000 can be located on the side of the first cover plate 200 away from the display panel 100, and the outer side of the second cover plate 300 can protrude beyond the outer side of the first cover plate 200. That is, the orthographic projection of the first cover plate 200 in the display module 000 onto the second cover plate 300 can be located within the area enclosed by the outer side of the second cover plate 300. Here, the second cover plate 300 in the display module 000 can be made of polyethylene terephthalate (PET) or polyimide (CPI). The second cover plate 300 can protect the first cover plate 200 and the display panel 100, and the second cover plate 300 can fold along with the display panel 100.

[0071] Here, in the direction perpendicular to the display side of the display panel 100, the first cover plate 200 may have two opposing upper and lower surfaces, and the outer side of the first cover plate 200 is the side located between these two surfaces. Similarly, the second cover plate 300 may have two opposing upper and lower surfaces, and the outer side of the second cover plate 300 is the side located between these two surfaces.

[0072] It should be noted that during the manufacturing process of the display module 000, the outer surface of the second cover plate 300 in the display module 000 can always protrude beyond the outer surface of the first cover plate 200. In this way, during the cutting process of the edge of the display module 000, the edge of the first cover plate 200 will not be cut, thus ensuring that the first cover plate 200 will not crack.

[0073] The filling portion 400 in the display module 000 can be located on the outer surface of the first cover plate 200 and can be distributed between the second cover plate 300 and the display panel 100. Specifically, the filling portion 400 in the display module 000 can be distributed at least within the bending area P of the display panel 100. Thus, within the bending area P of the display panel 100, the filling portion 400 can fill the gap between the outer surfaces of the first cover plate 200 and the second cover plate 300, ensuring that the portion of the outer surface of the first cover plate 200 located within the bending area P is covered by the filling portion 400. Therefore, during the bending process of the display panel 100 through the bending area P, no voids are generated between the portion of the outer surface of the first cover plate 200 located within the bending area P and the second cover plate 300, thereby avoiding the possibility of air bubbles forming on the outer surface of the first cover plate 200 and ensuring the reliability of the display module 000.

[0074] It should be noted that the distribution of the filling portion 400 in the display module 000 on the outer surface of the first cover plate 200 can have the following two cases:

[0075] As shown in Figure 3, which is a top view of a display module provided in another embodiment of this application, in the first case, the filling part 400 in the display module 000 can be located on all the outer surfaces of the first cover plate 200, that is, the filling part 400 can cover all the outer surfaces of the first cover plate 200 to fill the gap between all the outer surfaces of the first cover plate 200 and all the outer surfaces of the second cover plate 300.

[0076] In the second case, as shown in Figure 1, since the portion of the outer side of the first cover plate 200 located within the bending area P is the main location for bubble generation, the filling portion 400 in the display module 000 can be located only on the portion of the outer side of the first cover plate 200 located around the bending area P to fill the gap between the outer side of the first cover plate 200 located within the bending area P and the outer side of the second cover plate 300 located within the bending area P. Thus, it is sufficient to ensure that only the portion of the outer side of the first cover plate 200 located within the bending area P can be covered by the filling portion 400.

[0077] In summary, this application provides a display module including a display panel, a first cover plate, a second cover plate, and a filling portion. The display panel can be folded or unfolded through a bending area. The first and second cover plates can be folded along with the display panel, and the outer side of the second cover plate, located on the side of the first cover plate opposite to the display panel, protrudes from the outer side of the first cover plate. The filling portion can be located on the outer surface of the first cover plate and can be distributed between the second cover plate and the display panel. The filling portion in the display module can be at least distributed within the bending area of ​​the display panel. Thus, within the bending area of ​​the display panel, the filling portion can fill the gap between the outer sides of the first and second cover plates, ensuring that the portion of the outer side of the first cover plate located within the bending area is covered by the filling portion. Therefore, during the bending process of the display panel, no voids are generated between the portion of the outer side of the first cover plate located within the bending area and the second cover plate, thereby avoiding the possibility of air bubbles forming on the outer side of the first cover plate and ensuring the reliability of the display module.

[0078] Optionally, as shown in Figures 4 and 5, Figure 4 is a top view of another display module provided in an embodiment of this application, and Figure 5 is a cross-sectional view of the display module shown in Figure 4 at point B-B'. The filling portion 400 in the display module 000 may include a body portion 401 and an overflow portion 402 connected to each other. The body portion 401 in the filling portion 400 may be located on the outer surface of the first cover plate 200, and the overflow portion 402 in the filling portion 400 may be located at least on the side of the body portion 401 facing away from the second cover plate 300.

[0079] For example, the side of the body portion 401 in the filling portion 400 that faces away from the second cover plate 300 can be flush with the side of the first cover plate 200 that faces away from the second cover plate 300, that is, the body portion 401 can completely cover the outer side of the first cover plate 200. And at least the overflow portion 402 located on the side of the body portion 401 facing away from the second cover plate 300 can further cover the outer side of the first cover plate 200 to ensure that the gap between the outer side of the first cover plate 200 and the outer side of the second cover plate 300 can be completely filled by the filling portion 400.

[0080] Optionally, as shown in Figure 5, the maximum distance D2 between the side of the overflow portion 402 in the filling portion 400 away from the second cover plate 300 and the side of the first cover plate 200 away from the second cover plate 300 can be less than or equal to the thickness D1 of the first cover plate 200.

[0081] Optionally, as shown in Figure 5, the maximum distance D2 between the side of the overflow portion 402 in the filling portion 400 facing away from the second cover plate 300 and the side of the first cover plate 200 facing away from the second cover plate 300 can be less than or equal to 30 micrometers, and the thickness D1 of the first cover plate 200 can range from 20 micrometers to 50 micrometers. For example, the thickness D1 of the first cover plate 200 can be 30 micrometers.

[0082] It should be noted that during the manufacturing process of the display module 000, the size of the overflow portion 402 in the filling portion 400 may vary depending on the manufacturing process, so that the maximum distance D2 between the side of the overflow portion 402 away from the second cover plate 300 and the side of the first cover plate 200 away from the second cover plate 300 is less than or equal to 10 micrometers.

[0083] In one possible scenario, the maximum distance D2 between the side of the overflow portion 402 away from the second cover plate 300 and the side of the first cover plate 200 away from the second cover plate 300 is zero. That is, the filling portion 400 may only include the body portion 401 located on the outer side of the first cover plate 200, and the body portion 401 in the filling portion 400 may cover the outer side of the first cover plate 200.

[0084] In another possible scenario, the maximum distance D2 between the side of the overflow portion 402 facing away from the second cover plate 300 and the side of the first cover plate 200 facing away from the second cover plate 300 can be greater than 0 and less than or equal to 10 micrometers. In this way, the overflow portion 402 in the filling portion 400 can further cover the outer surface of the first cover plate 200, ensuring that the gap between the outer surface of the first cover plate 200 and the outer surface of the second cover plate 300 can be completely filled by the filling portion 400.

[0085] Optionally, please refer to Figures 6 and 7. Figure 6 is a top view of another display module provided in an embodiment of this application, and Figure 7 is a cross-sectional view of the display module shown in Figure 6 at point C-C'. The overflow portion 402 in the filling portion 400 may include a first sub-overflow portion 4021 and a second sub-overflow portion 4022. The first sub-overflow portion 4021 in the overflow portion 402 may be located on the side of the body portion 401 opposite to the second cover plate 300, and the second sub-overflow portion 4022 in the overflow portion 402 may be located on the side of the first cover plate 200 opposite to the second cover plate 300. In this way, the body portion 401, the first sub-overflow portion 4021 and the second sub-overflow portion 4022 in the filling portion 400 can cover the outer side of the first cover plate 200, which further ensures that the gap between the outer side of the first cover plate 200 and the outer side of the second cover plate 300 can be completely filled by the filling portion 400.

[0086] Optionally, as shown in Figure 7, the distance between the side of the second sub-overflow portion 4022 in the overflow portion 402 that is away from the second cover plate 300 and the side of the first cover plate 200 that is away from the second cover plate 300 can be gradually reduced to zero along the direction from the first sub-overflow portion 4021 toward the second sub-overflow portion 4022.

[0087] Optionally, as shown in Figure 7, the included angle A between the side of the second sub-overflow portion 4022 in the overflow portion 402 that is away from the second cover plate 300 and the side of the first cover plate 200 that is away from the second cover plate 300 can range from 0° to 90°. Preferably, the included angle A between the side of the second sub-overflow portion 4022 in the overflow portion 402 that is away from the second cover plate 300 and the side of the first cover plate 200 that is away from the second cover plate 300 can range from 0° to 45°. For example, the included angle A between the side of the second sub-overflow portion 4022 in the overflow portion 402 that is away from the second cover plate 300 and the side of the first cover plate 200 that is away from the second cover plate 300 can be 15°, 20°, 25°, 30°, or 45°, etc.

[0088] Optionally, as shown in Figures 6 and 7, in the direction parallel to the bending axis of the bending region P, the ratio of the maximum width H2 of the second sub-overflow portion 4022 in the overflow portion 402 to the maximum width H1 of the main body portion 401 is less than or equal to 1.5.

[0089] Optionally, as shown in Figures 5 and 6, in the direction parallel to the bending axis of the bending region P, the maximum width H2 of the second sub-overflow portion 4022 in the overflow portion 402 is less than or equal to 0.45 mm, and the maximum width H1 of the main body portion 401 ranges from 0.3 mm to 1.5 mm.

[0090] It should be noted that, similarly, during the manufacturing process of the display module 000, the size of the overflow portion 402 in the filling portion 400 can vary depending on the manufacturing process. When the maximum distance D2 between the side of the overflow portion 402 facing away from the second cover plate 300 and the side of the first cover plate 200 facing away from the second cover plate 300 is greater than 0 and less than or equal to 10 micrometers, and the width H2 of the second overflow portion 4022 in the overflow portion 402 is equal to 0, the overflow portion 402 may only include the first overflow portion 4021 located on the side of the body portion 401 facing away from the second cover plate 300, and the first overflow portion 4021 may further cover the outer surface of the first cover plate 200. When the maximum distance D2 between the side of the overflow portion 402 away from the second cover plate 300 and the side of the first cover plate 200 away from the second cover plate 300 is greater than 0 and less than or equal to 10 micrometers, and the width H2 of the second overflow portion 4022 in the overflow portion 402 is greater than 0 and less than 0.45 millimeters, the overflow portion 402 may further include a second overflow portion 4022 located on the side of the first cover plate 200 away from the second cover plate 300. In this way, the main body portion 401, the first sub-overflow portion 4021 and the second sub-overflow portion 4022 in the filling portion 400 can cover the outer side of the first cover plate 200, which further ensures that the gap between the outer side of the first cover plate 200 and the outer side of the second cover plate 300 can be completely filled by the filling portion 400.

[0091] Optionally, please refer to Figure 8, which is a top view of another display module provided in an embodiment of this application. The outer surface of the first cover plate 200 in the display module 000 may have a groove K, and the groove K of the first cover plate 200 is located at least within the bending region P. At least a portion of the filling portion 400 is located within the groove K of the first cover plate 200. That is, the portion of the filling portion 400 located within the groove K of the first cover plate 200 can cover the side of the groove K, thus covering the portion of the outer surface of the first cover plate 200 located within the bending region P. Here, in the direction perpendicular to the display side of the display panel 100, the groove K on the outer surface of the first cover plate 200 can completely penetrate both the upper and lower surfaces of the first cover plate 200.

[0092] It should be noted that, in this application, the outer surface of the first cover plate 200 may have a groove K on the outer side of the first cover plate 200, or the outer side of the first cover plate 200 may not have a groove K.

[0093] As shown in Figure 9, which is a top view of another display module provided in another embodiment of this application, when there is no groove K on the outer side of the first cover plate 200, the filling part 400 can be directly located on the part of the outer side of the first cover plate 200 located in the bending area P.

[0094] As shown in Figure 8, when the outer surface of the first cover plate 200 has a groove K, at least a portion of the groove K can be directly located within the bending area P, and at least a portion of the filling portion 400 can be located within the groove K. Thus, compared to the case where the outer surface of the first cover plate 200 does not have a groove K, when the outer surface of the first cover plate 200 has a groove K, at least a portion of the filling portion 400 can be located within the groove K. Therefore, during the manufacturing process of the filling portion 400, it is only necessary to fill the filling portion 400 within the groove K, which simplifies the manufacturing of the filling portion 400. The following embodiment will be illustrated using the example of the outer surface of the first cover plate 200 having a groove K.

[0095] Optionally, as shown in Figures 6 and 8, in the extending direction parallel to the bending axis of the bending region P, the maximum width H1 of the body portion 401 in the filling portion 400 can be greater than or equal to the maximum width H3 of the groove K of the first cover plate 200. In this way, in the extending direction parallel to the bending axis of the bending region P, the groove K of the first cover plate 200 can be evenly filled with the body portion 401, and the body portion 401 has a portion located at least outside the groove K of the first cover plate 200. This ensures that the portion of the outer surface of the first cover plate 200 located within the bending region P can be covered by the body portion 401.

[0096] Optionally, as shown in Figures 6 and 8, the maximum width H3 of the groove K in the first cover plate 200 ranges from 0.3 mm to 0.8 mm in the direction parallel to the bending axis of the bending region P. Here, the maximum width H1 of the body portion 401 in the filling portion 400 ranges from 0.3 mm to 1.5 mm in the direction parallel to the bending axis of the bending region P. This ensures that the maximum width H1 of the body portion 401 in the filling portion 400 can be greater than or equal to the maximum width H3 of the groove K in the first cover plate 200 in the extending direction parallel to the bending axis of the bending region P.

[0097] Optionally, as shown in Figures 8 and 10, Figure 10 is a top view of a display module provided in another embodiment of this application. In the direction parallel to the display side of the display panel 100 and perpendicular to the bending axis of the bending area P, the length L1 of the groove K of the first cover plate 200 can be greater than or equal to the width L2 of the bending area P.

[0098] Here, on the display side parallel to the display panel 100 and perpendicular to the bending axis of the bending area P, the length L3 of the filling portion 400 can have two cases: As shown in FIG8, in the first case of the filling portion 400, the length L3 of the filling portion 400 can be less than the length L1 of the groove K and greater than or equal to the length L2 of the bending area P. As shown in FIG10, in the second case of the filling portion 400, the length L3 of the filling portion 400 can be greater than or equal to the length L1 of the groove K.

[0099] Thus, on the display side parallel to the display panel 100 and perpendicular to the bending axis of the bending area P, in both the first and second cases of the filling portion 400, the length L3 of the filling portion 400 can be greater than or equal to the length L2 of the bending area P. This ensures that the filling portion 400 located in the groove K can completely cover the portion of the outer surface of the first cover plate 200 located within the bending area P.

[0100] Optionally, on the display side of the display panel 100 and in a direction perpendicular to the bending axis of the bending area P, the difference between the length L1 of the groove K of the first cover plate 200 and the width L2 of the bending area P can be less than or equal to 10 mm. For example, on the display side of the display panel 100 and in a direction perpendicular to the bending axis of the bending area P, the distance between the two ends of the groove K and the two ends of the corresponding bending area P can be 5 mm each.

[0101] It should be noted that the display panel 100 in the display module may include at least one bending area P. The above embodiments are illustrative examples of the display panel 100 including one bending area P. The bending area P of the display panel 100 can be an inner bending area or an outer bending area; this application does not limit this. The following embodiments will illustrate an example of the display panel 100 including two bending areas P. Please refer to Figure 11, which is a top view of another display module provided in another embodiment of this application. One of the two bending areas P of the display panel 100 can be an inner bending area P1, and the other can be an outer bending area P2.

[0102] It should be noted that the inner bending area P1 of the display panel 100 is a bending area P through which the display side of the display panel 100 moves relative to each other to fold or unfold, and the outer bending area P2 of the display panel 100 is a bending area P through which the back side of the display panel 100 moves relative to each other to fold or unfold. Here, the back side of the display panel 100 is the side opposite to the display side of the display panel 100. Therefore, the inner bending radius of the display panel 100 can be smaller than the outer bending radius of the display panel 100. The range of the inner bending radius of the display panel 100 can be from 1 mm to 3 mm, and the range of the outer bending radius can be from 2 mm to 5 mm. For example, the inner bending radius of the display panel 100 can be 1.5 mm, and the outer bending radius can be 3 mm.

[0103] Therefore, on the display side parallel to the display panel 100 and perpendicular to the bending axis of the bending area P, the width L21 of the inner bending area P1 of the display panel 100 can be smaller than the width L22 of the outer bending area P2 of the display panel 100.

[0104] In this application, when the display panel 100 includes an inner curved area P1 and an outer curved area P2, the display panel 100 can be in a fully unfolded state, that is, both the inner curved area P1 and the outer curved area P2 of the display panel 100 are unfolded. Alternatively, the display panel 100 can be in a semi-unfolded and semi-folded state, that is, one of the inner curved area P1 and the outer curved area P2 of the display panel 100 is folded while the other is unfolded. Alternatively, the display panel 100 can be in a fully folded state, that is, both the inner curved area P1 and the outer curved area P2 of the display panel 100 are folded.

[0105] Optionally, the groove K located on the outer surface of the first cover plate 200 and at least distributed within the inner bending region P1 can be a first groove K1, and the groove K located on the outer surface of the first cover plate 200 and at least distributed within the outer bending region P2 can be a second groove K2. In the direction parallel to the display side of the display panel 100 and perpendicular to the bending axis of the bending region P, since the width L21 of the inner bending region P1 is smaller than the width L22 of the outer bending region P2, the length L11 of the first groove K1 at least distributed within the inner bending region P1 is smaller than the length L12 of the second groove K2 at least distributed within the outer bending region P2.

[0106] Here, the lengths L of the grooves K distributed in different bending areas P are different. As can be seen from the above, on the display side parallel to the display panel 100 and perpendicular to the bending axis of the bending area P, the difference between the length L1 of the groove K of the first cover plate 200 and the width L2 of the bending area P can be less than or equal to 10 mm. Therefore, the length L1 of the grooves K distributed in different bending areas P can be determined according to the width L2 of the corresponding bending area P.

[0107] Optionally, on the display side parallel to the display panel 100 and perpendicular to the bending axis of the bending area P, the length L11 of the first groove K1 at least distributed in the inner bending area P1 ranges from 10 mm to 15 mm, and the length L12 of the second groove K2 at least distributed in the outer bending area P2 ranges from 12 mm to 18 mm. For example, the length L11 of the first groove K1 at least distributed in the inner bending area P1 can be 11.6 mm, and the length L12 of the second groove K2 at least distributed in the outer bending area P2 can be 14.6 mm.

[0108] It should be noted that, on the display side parallel to the display panel 100 and perpendicular to the bending axis of the bending area P, the length L3 of the filling portion 400 distributed within the groove K can be determined based on the length L1 of the corresponding groove K and the width L2 of the bending area P. Furthermore, the distribution of the filling portion 400 within the groove K can have the two aforementioned cases: that is, on the display side parallel to the display panel 100 and perpendicular to the bending axis of the bending area P, the length L3 of the filling portion 400 is less than the length L1 of the groove K and greater than or equal to the length L2 of the bending area P, or the length L3 of the filling portion 400 is greater than or equal to the length L1 of the groove K.

[0109] Therefore, on the display side parallel to the display panel 100 and perpendicular to the bending axis of the bending region P, the filling portion 400 at least distributed in the first groove K1 has the following two distribution configurations: As shown in FIG11, the length L3 of the filling portion 400 at least distributed in the first groove K1 can be less than the length L11 of the first groove K1 and greater than or equal to the width L21 of the inner bending region P1; or, as shown in FIG12, FIG12 is a top view of another display panel provided in another embodiment of this application, the length L3 of the filling portion 400 at least distributed in the first groove K1 can be greater than or equal to the length L11 of the first groove K1. Similarly, the filling portion 400 at least distributed in the second groove K2 has the following two distribution configurations: As shown in FIG11, the length L3 of the filling portion 400 at least distributed in the second groove K2 can be less than the length L12 of the second groove K2 and greater than or equal to the width L2 of the outer bending region P2; or, as shown in FIG12, the length L3 of the filling portion 400 at least distributed in the second groove K2 can be greater than or equal to the length L12 of the second groove K2.

[0110] It should be noted that regarding the two distribution scenarios of the filling portion 400 within the groove K, in the direction parallel to the display side of the display panel 100 and perpendicular to the bending axis of the bending area P, when the length L3 of the filling portion 400 is less than the length L1 of the groove K but greater than or equal to the length L2 of the bending area P, the difference between the length L3 of the filling portion 400 and the length L1 of the groove K can be less than or equal to 5 mm. For example, the distance between the two ends of the filling portion 400 and the two ends of the corresponding groove K can be 2.5 mm each. When the length L3 of the filling portion 400 is greater than or equal to the length L1 of the groove K, the difference between the length L3 of the filling portion 400 and the length L1 of the groove K can be less than or equal to 10 mm. For example, the distance between the two ends of the filling portion 400 and the two ends of the groove K can be 5 mm each.

[0111] Therefore, based on the two distributions of the filling portion 400 in the first groove K1 and the two distributions of the filling portion 400 in the second groove K2, the length L3 of the filling portion 400 can have two different length ranges: 13 mm to 18 mm and 17 mm to 22 mm, in the direction parallel to the display side of the display panel 100 and perpendicular to the bending axis of the bending area P.

[0112] Thus, on the display side parallel to the display panel 100 and perpendicular to the bending axis of the bending area P, based on the two distribution scenarios of the filling part 400 in the first groove K1 and the two distribution scenarios of the filling part 400 in the second groove K2, the distribution of the filling part 400 in the groove K of the first cover plate 200 has the following four scenarios:

[0113] In the first case, as shown in Figure 11, the length L3 of the filling portion 400 at least distributed in the first groove K1 is less than the length L11 of the first groove K1 and greater than or equal to the width L21 of the inner curved region P1. Here, the length L3 of the filling portion 400 can range from 13 mm to 18 mm. The length L3 of the filling portion 400 at least distributed in the second groove K2 is less than the length L12 of the second groove K2 and greater than or equal to the width L22 of the outer curved region P2. Here, the length L3 of the filling portion 400 can range from 13 mm to 18 mm.

[0114] In the second case, as shown in Figure 12, the length L3 of the filling portion 400 at least distributed in the first groove K1 is greater than or equal to the length L11 of the first groove K1. Here, the length L3 of the filling portion 400 can range from 17 mm to 22 mm. The length L3 of the filling portion 400 at least distributed in the second groove K2 is greater than or equal to the length L12 of the second groove K2. Here, the length L3 of the filling portion 400 can range from 17 mm to 22 mm.

[0115] In the third case, as shown in Figure 13, which is a top view of another display module provided in another embodiment of this application, the length L3 of the filling portion 400 at least distributed in the first groove K1 is less than the length L11 of the first groove K1 and greater than or equal to the width L21 of the inner curved area P1. Here, the length L3 of the filling portion 400 can range from 13 mm to 18 mm. The length L3 of the filling portion 400 at least distributed in the second groove K2 is greater than or equal to the length L12 of the second groove K2. Here, the length L3 of the filling portion 400 can range from 17 mm to 22 mm.

[0116] In the fourth case, as shown in Figure 14, which is a top view of another display module provided in another embodiment of this application, the length L3 of the filling portion 400 at least distributed in the first groove K1 is greater than or equal to the length L11 of the first groove K1. Here, the length L3 of the filling portion 400 can range from 17 mm to 22 mm. The length L3 of the filling portion 400 at least distributed in the second groove K2 is less than the length L12 of the second groove K2 and greater than or equal to the width L22 of the outer curved area P2. Here, the length L3 of the filling portion 400 can range from 13 mm to 18 mm.

[0117] It should be noted that when the display panel in the display module 000 includes only one bending area P, the length L1 of the groove K distributed within the bending area P, on the display side parallel to the display panel 100 and perpendicular to the bending axis of the bending area P, can be determined based on the width L2 of the bending area P. Furthermore, the length L3 of the filling portion 400 can be determined based on the length L1 of the groove K and two different distribution scenarios of the filling portion 400 within the groove K. That is, as shown in Figure 8, the length L3 of the filling portion 400 can be less than the length L1 of the groove K and greater than or equal to the length L2 of the bending area P; or as shown in Figure 10, the length L3 of the filling portion 400 can be greater than or equal to the length L1 of the groove K.

[0118] In this application, as shown in FIG15, FIG15 is a top view of another display module provided in another embodiment of this application. The orthographic projection of the first cover plate 200 in the display module 000 onto the second cover plate 300 can be located in the area enclosed by the outer side surface of the second cover plate 300, and the distance H4 between the outer side surface of the first cover plate 200 and the outer side surface of the second cover plate 300 ranges from 0.1 mm to 0.3 mm.

[0119] It should be noted that, as shown in Figure 15, in the direction parallel to the bending area P, the width B1 of the first cover plate 200 can range from 145 mm to 155 mm. For example, the width B1 of the first cover plate 200 can be 151 mm. Then, the width B2 of the second cover plate 300 can range from 145.1 mm to 155.3 mm. For example, the width B2 of the second cover plate 300 can be 151.3 mm. In the direction parallel to the display side of the display panel 100 and perpendicular to the bending axis of the bending area P, the length C1 of the first cover plate 200 can range from 205 mm to 220 mm. For example, the length C1 of the first cover plate 200 can be 216 mm. Then, the length C2 of the second cover plate 300 can range from 205.1 mm to 220.3 mm. For example, the length C2 of the second cover plate 300 can be 216.3 mm.

[0120] It should also be noted that during the manufacturing process of the display module 000, when the edges of the display module 000 are not cut, the width B2 of the second cover plate 300 can be 160 mm in the direction parallel to the bending area P. The length C2 of the second cover plate 300 can be 219 mm in the direction parallel to the display side of the display panel 100 and perpendicular to the bending axis of the bending area P.

[0121] In this application, please refer to FIG16, which is a cross-sectional view of the film layers of a display module provided in an embodiment of this application. The display module 000 may further include: a first colloidal layer 500 and a second colloidal layer 600. The first colloidal layer 500 in the display module 000 may be located between the first cover plate 200 and the second cover plate 300, that is, the first colloidal layer 500 may be used to connect the first cover plate 200 and the second cover plate 300. The second colloidal layer 600 in the display module 000 may be located between the first cover plate 200 and the display panel 100, that is, the second colloidal layer 600 may be used to connect the first cover plate 200 and the display panel 100.

[0122] It should be noted that the orthographic projection of the first cover plate 200 on the first colloidal layer 500 in the display module 000 can be located within the area enclosed by the outer side of the first colloidal layer 500, and the orthographic projection of the first cover plate 200 on the second colloidal layer 600 can be located within the area enclosed by the outer side of the second colloidal layer 600. Furthermore, the orthographic projections of the first colloidal layer 500 and the second colloidal layer 600 on the second cover plate 300 can be located within the area enclosed by the outer side of the second cover plate 300. That is, the outer side of the first cover plate 200 can be located between the outer side of the second cover plate 300 and the outer side of the first colloidal layer 500, and can also be located between the outer side of the second cover plate 300 and the outer side of the second colloidal layer 600.

[0123] It should also be noted that the overflow portion 402 in the filling portion 400 is at least distributed between the first cover plate 200 and the second colloid layer 600. The second colloid layer 600 can cover the overflow portion 402 in the filling portion 400 to ensure the flatness of the connection between the first cover plate 200 and the display panel 100.

[0124] It should also be noted that, depending on the distance between the outer surface of the first colloidal layer 500 and the outer surface of the second cover plate 300, the filling portion 400 in the display module 000 can have the following three different film layer structures:

[0125] In the first case, as shown in FIG17, FIG17 is a cross-sectional view of the film layer of another display module provided in an embodiment of the present application. The outer side of the first colloidal layer 500 may overlap with the outer side of the second colloidal layer 600, and the filling portion 400 in the display module 000 may be entirely located between the first colloidal layer 500 and the second colloidal layer 600, and a portion of the outer side of the filling portion 400 may overlap with the outer side of the first colloidal layer 500.

[0126] In the second case, as shown in Figure 18, which is a cross-sectional view of the film layers of another display module provided in an embodiment of this application, the outer surface of the first colloidal layer 500 may overlap with the outer surface of the second colloidal layer 600. A portion of the filling portion 400 may be located between the first colloidal layer 500 and the second colloidal layer 600, and another portion may be located between the second cover plate 300 and the display panel 100. That is, the portion of the filling portion 400 located between the second cover plate 300 and the display panel 100 may at least cover the outer surfaces of the first colloidal layer 500 and the second colloidal layer 600. Thus, the filling portion 400 may cover the outer surfaces of the first colloidal layer 500, the first cover plate 200, and the second colloidal layer 600.

[0127] In the third case, as shown in Figure 19, which is a cross-sectional view of the film layers of another display module provided in an embodiment of this application, the orthographic projection of the first colloidal layer 500 onto the second colloidal layer 600 can be located within the area enclosed by the outer surface of the second colloidal layer 600, and the outer surface of the first colloidal layer 500 can coincide with the outer surface of the first cover plate 200. The filling portion 400 is located at least between the second cover plate 300 and the second colloidal layer 600, that is, at least a portion of the filling portion 400 can simultaneously cover the outer surfaces of the first cover plate 200 and the first colloidal layer 500.

[0128] Optionally, the filling portion 400 in the display module 000 may be made of at least one of a transparent material, a reflective material, and a light-absorbing material.

[0129] It should be noted that the first colloidal layer 500 and the second colloidal layer 600 in the display module 000 need to be made of transparent materials. For example, the first colloidal layer 500 and the second colloidal layer 600 can be made of optically clear adhesive (OCA), or the filler portion 400 can be made of optically clear resin (OCR). Therefore, the filler portion 400 in the display module 000 can be made of transparent materials, such as OCR or OCA; that is, the filler portion 400 and the first colloidal layer 500 can be made of the same transparent material.

[0130] It should also be noted that, as shown in Figure 19, when the filling portion 400 in the display module 000 is made of a light-absorbing material, such as ink, a portion of the filling portion 400 can be located between the first colloidal layer 500 and the second cover plate 300, so that the outer side of the first cover plate 200 can be located within the area enclosed by the outer side of the filling portion 400. In this way, the outer side of the first cover plate 200 can be shielded by the filling portion 400 made of a light-absorbing material, ensuring that the user cannot observe the outer side of the first cover plate 200 through the second cover plate 300.

[0131] Alternatively, as shown in Figure 16, when the filling portion 400 in the display module 000 is made of a transparent material, the display module 000 may further include a light-absorbing layer 700. The light-absorbing layer 700 in the display module 000 may be located between the second cover plate 300 and the first colloidal layer 500, and the outer surface of the first cover plate 200 may be located within the area enclosed by the outer surface of the light-absorbing layer 700. In this way, the outer surface of the first cover plate 200 can be shielded by the light-absorbing layer 700, ensuring that the user cannot observe the outer surface of the first cover plate 200 through the second cover plate 300.

[0132] It should also be noted that the portion of the filling part 400 located between the second cover plate 300 and the first colloidal layer 500 can be covered by the first colloidal layer 500, or the light-absorbing layer 700 in the display module 000 can be covered by the first colloidal layer 500, thus ensuring the flatness of the connection between the second cover plate 300 and the first cover plate 200.

[0133] In this application, during the manufacturing process of the display module 000, the first cover plate 200 and the second cover plate 300 in the display module 000 can be bonded together by a first adhesive layer 500. Furthermore, during the connection process of the first cover plate 200 and the second cover plate 300, a light-absorbing layer 700 can be first formed on the side of the second cover plate 300 facing the first cover plate 200. Then, the first adhesive layer 500 can be formed on the side of the light-absorbing layer 700 away from the second cover plate 300, and the first adhesive layer 500 can cover the light-absorbing layer 700. Finally, the first cover plate 200 can be bonded together with the second cover plate 300 by the first adhesive layer 500.

[0134] As shown in Figure 20, which is a cross-sectional view of the film layer of a display module according to another embodiment of this application, after the first cover plate 200 and the second cover plate 300 are bonded together by the first adhesive layer 500, in order to protect the first cover plate 200 and the second cover plate 300, a first protective layer 801 can be applied to the side of the second cover plate 300 opposite to the first cover plate 200, and a second protective layer 802 can be applied to the side of the first cover plate 200 opposite to the second cover plate 300. Thus, during subsequent transportation processes, the first protective layer 801 can protect the second cover plate 300, and the second protective layer 802 can protect the first cover plate 200.

[0135] Next, as shown in Figure 21, which is a cross-sectional view of the film layer of another display module provided in another embodiment of this application. Before manufacturing the filling portion 400, the second protective layer 802 needs to be replaced with a third protective layer 803. The third protective layer 803 has an opening V, and the outer side of the first cover plate 200 can be located within the area enclosed by the opening V of the third protective layer 803. Furthermore, in order to prevent foreign objects from contaminating the first cover plate 200 through the opening V, a fourth protective layer 804 needs to be attached to the side of the third protective layer 803 facing away from the first cover plate 200.

[0136] As shown in Figures 22 and 23, Figure 22 is a cross-sectional view of the film layer of another display module provided in another embodiment of this application, and Figure 23 is a cross-sectional view of the film layer of yet another display module provided in another embodiment of this application. During the manufacturing process of the filling portion 400, the fourth protective layer 804 can be removed to expose the opening V of the third protective layer 803. Then, the filling portion 400 can be connected to the outer surface of the first cover plate 200 through the opening V of the third protective layer 803, so that the outer surface of the first cover plate 200 can be covered by the filling portion 400.

[0137] It should be noted that during the manufacturing process of the filling part 400, since the overflow part 402 in the filling part 400 may include the second overflow part 4022, the orthographic projection of the outer side of the first cover plate 200 on the opening V of the third protective layer 803 needs to be located within the area enclosed by the outline of the opening V, and the distance H5 between the outer side of the first cover plate 200 and the outline of the opening V can be between 0.1 mm and 10 mm.

[0138] Finally, as shown in Figure 24, which is a cross-sectional view of the film layer of a display module provided in another embodiment of this application, after the filling part 400 is manufactured, in order to prevent foreign objects from contaminating the filling part 400 through the opening V of the third protective layer 803, a fifth protective layer 805 needs to be attached to the side of the third protective layer 803 facing away from the first cover plate 200.

[0139] After the first cover plate 200 and the second cover plate 300 are bonded together by the first adhesive layer 500, and the filling portion 400 is attached to the outer surface of the first cover plate 200, the first cover plate 200 and the display panel 100 can be bonded together by the second adhesive layer 600. The second adhesive layer 600 can cover the overflow portion 402 in the filling portion 400 to ensure the flatness of the connection between the first cover plate 200 and the display panel 100. This enables the manufacturing of the display module 000.

[0140] In this application, please refer to FIG25, which is a cross-sectional view of the film layer of another display module provided in another embodiment of this application. The display module 000 may further include a support layer 900. The support layer 900 in the display module 000 may be located on the side of the display panel 100 opposite to the first cover plate 200, and the support layer 900 in the display module 000 may be used to support the display module 000. The support layer 900 in the display module 000 also needs to be bent as the display panel 100 is bent.

[0141] It should be noted that the support layer 900 in the display module 000 generally has poor flexibility. To ensure that the support layer 900 can bend along with the display panel 100, a cutout area needs to be provided within the bending area of ​​the support layer 900 to increase the flexibility of the bending area and ensure that the support layer 900 can be bent through the bending area. If the display panel 100 includes an inner bending area P1 and an outer bending area P2, the support layer 900 also needs to include inner and outer bending areas. Furthermore, the width of the inner bending area of ​​the support layer 900 can range from 20 to 30 mm, and the width of the outer bending area can range from 10 to 15 mm. For example, the width of the inner bending area of ​​the support layer 900 can be 25 mm, and the width of the outer bending area can be 13.5 mm.

[0142] In summary, this application provides a display module including a display panel, a first cover plate, a second cover plate, and a filling portion. The display panel can be folded or unfolded through a bending area. The first and second cover plates can be folded along with the display panel, and the outer side of the second cover plate, located on the side of the first cover plate opposite to the display panel, protrudes beyond the outer side of the first cover plate. The filling portion can be located on the outer surface of the first cover plate and can be distributed between the second cover plate and the display panel. Specifically, the filling portion in the display module can be at least distributed within the bending area of ​​the display panel. Thus, within the bending area of ​​the display panel, the filling portion can fill the gap between the outer sides of the first and second cover plates, ensuring that the portion of the outer side of the first cover plate located within the bending area is covered by the filling portion. Therefore, during the folding process of the display panel through the bending area, no voids are generated between the portion of the outer side of the first cover plate located within the bending area and the second cover plate, thereby avoiding the possibility of air bubbles forming on the outer side of the first cover plate and ensuring the reliability of the display module.

[0143] This application embodiment also provides a display device, which may include: a folding housing and a display module connected to the folding housing. The display module in the display device can be any of the display modules described above. Through the connection between the folding housing and the display module in the display device, the user can drive the folding or unfolding of the folding housing to cause the display module to fold or unfold, thereby realizing the folding or unfolding of the display device. In this way, the user can meet different needs by folding or unfolding the display device. For example, when the user needs to carry the display device with them, they can fold it to reduce its size and improve portability; when the user uses the display device, they can unfold it to provide a larger display area and operating area, thereby improving ease of use. For example, the display device can be a mobile phone, tablet computer, laptop computer, e-reader, etc.

[0144] It should be noted that the dimensions of layers and regions may be exaggerated in the accompanying drawings for clarity. Furthermore, it is understood that when an element or layer is referred to as being "on" another element or layer, it can be directly on the other element, or there may be intermediate layers. Additionally, it is understood that when an element or layer is referred to as being "below" another element or layer, it can be directly below the other element, or there may be more than one intermediate layer or element. Furthermore, it is also understood that when a layer or element is referred to as being "between" two layers or two elements, it can be the only layer between the two layers or two elements, or there may be more than one intermediate layer or element. Similar reference numerals throughout indicate similar elements.

[0145] In this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The term "multiple" refers to two or more unless otherwise expressly defined.

[0146] The above description is merely an optional embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A display module, characterized in that, include: Display panel (100), first cover plate (200), second cover plate (300) and filling part (400); The display panel (100) has a bending area (P); The first cover plate (200) is located on the display side of the display panel (100); The second cover plate (300) is located on the side of the first cover plate (200) away from the display panel (100), and the outer side of the second cover plate (300) protrudes from the outer side of the first cover plate (200); The filling portion (400) is located on the outer side of the first cover plate (200) and is distributed between the second cover plate (300) and the display panel (100); The filling portion (400) is at least distributed within the bending area (P).

2. The display module according to claim 1, characterized in that, The filling portion (400) includes a body portion (401) and an overflow portion (402) connected to each other; the body portion (401) is located on the outer side of the first cover plate (200), and the overflow portion (402) is located at least on the side of the body portion (401) away from the second cover plate (300).

3. The display module according to claim 2, characterized in that, The maximum distance (D2) between the side of the overflow portion (402) away from the second cover plate (300) and the side of the first cover plate (200) away from the second cover plate (300) is less than or equal to the thickness (D1) of the first cover plate (200).

4. The display module according to claim 2, characterized in that, The maximum distance (D2) between the side of the overflow portion (402) away from the second cover plate (300) and the side of the first cover plate (200) away from the second cover plate (300) is less than or equal to 30 micrometers, and the thickness (D1) of the first cover plate (200) ranges from 20 micrometers to 50 micrometers.

5. The display module according to any one of claims 2 to 4, characterized in that, The overflow portion (402) includes: a first sub-overflow portion (4021) and a second sub-overflow portion (4022); the first sub-overflow portion (4021) is located on the side of the main body portion (401) away from the second cover plate (300), and the second sub-overflow portion (4022) is located on the side of the first cover plate (200) away from the second cover plate (300).

6. The display module according to claim 5, characterized in that, The distance between the side of the second sub-overflow portion (4022) away from the second cover plate (300) and the side of the first cover plate (200) away from the second cover plate (300) gradually decreases to zero along the direction from the first sub-overflow portion (4021) toward the second sub-overflow portion (4022).

7. The display module according to claim 5, characterized in that, The angle between the side of the second sub-overflow portion (4022) away from the second cover plate (300) and the side of the first cover plate (200) away from the second cover plate (300) ranges from 0° to 90°.

8. The display module according to claim 5, characterized in that, In the direction parallel to the bending axis of the bending region (P), the ratio of the maximum width (H2) of the second sub-overflow portion (4022) to the maximum width (H1) of the main body portion (401) is less than or equal to 1.

5.

9. The display module according to claim 5, characterized in that, In the direction parallel to the bending axis of the bending area (P), the maximum width (H2) of the second sub-overflow portion (4022) is less than or equal to 0.45 mm, and the maximum width (H1) of the main body portion (401) ranges from 0.3 mm to 1.5 mm.

10. The display module according to any one of claims 1-4 and 6-9, characterized in that, The outer surface of the first cover plate (200) has a groove (K), which is located at least within the bending area (P); At least a portion of the filling portion (400) is located within the groove (K).

11. The display module according to claim 10, characterized in that, In the direction parallel to the bending axis of the bending area (P), the maximum width (H1) of the body portion (401) in the filling portion (400) is greater than or equal to the maximum width (H3) of the groove (K).

12. The display module according to claim 11, characterized in that, In the direction parallel to the bending axis of the bending area (P), the maximum width (H3) of the groove (K) ranges from 0.3 mm to 0.8 mm.

13. The display module according to claim 10, characterized in that, On the display side parallel to the display panel (100) and in a direction perpendicular to the bending axis of the bending area (P), the length (L1) of the groove (K) is greater than or equal to the width (L2) of the bending area (P). Furthermore, on the display side parallel to the display panel (100) and in a direction perpendicular to the bending axis of the bending area (P), the length (L3) of the filling portion (400) is less than the length (L1) of the groove (K) and greater than or equal to the width (L2) of the bending area (P); or, the length (L3) of the filling portion (400) is greater than or equal to the length (L1) of the groove (K).

14. The display module according to claim 13, characterized in that, On the display side parallel to the display panel (100) and in a direction perpendicular to the bending axis of the bending area (P), the difference between the length (L1) of the groove (K) and the width (L2) of the bending area (P) is less than or equal to 10 mm.

15. The display module according to any one of claims 11 to 14, characterized in that, The display panel (100) includes: two bending areas (P), one of the two bending areas (P) being an inner bending area (P1) and the other being an outer bending area (P2); a groove (K) located on the outer surface of the first cover plate (200) and distributed at least in the inner bending area (P1) is a first groove (K1), and a groove (K) located on the outer surface of the first cover plate (200) and distributed at least in the outer bending area (P2) is a second groove (K2); In the direction parallel to the display side of the display panel (100) and perpendicular to the bending axis of the bending area (P), the width (L21) of the inner bending area (P1) is smaller than the width (L22) of the outer bending area (P2), and the length (L11) of the first groove (K1) is smaller than the length (L12) of the second groove (K2).

16. The display module according to claim 15, characterized in that, On the display side parallel to the display panel (100) and in a direction perpendicular to the bending axis of the bending area (P), the length (L11) of the first groove (K1) ranges from 10 mm to 15 mm, and the length (L12) of the second groove (K2) ranges from 12 mm to 18 mm.

17. The display module according to any one of claims 1-4, 6-9, 11-14, and 16, characterized in that, The orthographic projection of the first cover plate (200) onto the second cover plate (300) is located within the area enclosed by the outer side of the second cover plate (300), and the distance (H4) between the outer side of the first cover plate (200) and the outer side of the second cover plate (300) ranges from 0.1 mm to 0.3 mm.

18. The display module according to any one of claims 1-4, 6-9, 11-14, and 16, characterized in that, The display module further includes: a first colloidal layer (500) and a second colloidal layer (600), wherein the first colloidal layer (500) is located between the first cover plate (200) and the second cover plate (300), and the second colloidal layer (600) is located between the first cover plate (200) and the display panel (100); All of the filling portion (400) is located between the first colloidal layer (500) and the second colloidal layer (600); Alternatively, a portion of the filling portion (400) may be located between the first colloidal layer (500) and the second colloidal layer (600), and another portion may be located between the second cover plate (300) and the display panel (100); Alternatively, the filling portion (400) may be located at least between the second cover plate (300) and the second colloidal layer (600).

19. The display module according to claim 18, characterized in that, The filling part (400) is made of at least one of transparent material, reflective material and light-absorbing material.

20. A display device, characterized in that, include: A folding housing and a display module connected to the folding housing, the display module being the display module according to any one of claims 1 to 19.

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