Display module and display equipment

Abstract

The invention discloses a display module and display equipment, and belongs to the technical field of display. The display module comprises a display panel, a first cover plate, a second cover plate and a filling part. The display panel can be folded or unfolded through the bending area of the display panel, and the outer side face of the second cover plate located on the side, away from the display panel, of the first cover plate protrudes out of the outer side face of the first cover plate. The filling part is located on the outer side face of the first cover plate and distributed between the second cover plate and the display panel, and the filling part is at least distributed in the bending area of the display panel. Therefore, in the bending area of the display panel, the filling part can fill the offset between the outer side face of the first cover plate and the outer side face of the second cover plate, so that the part, located in the bending area, of the outer side face of the first cover plate can be covered by the filling part. In this way, the possibility that bubbles are generated on the outer side face of the first cover plate in the process that the display panel is bent through the bending area is avoided, and the reliability of the display module is guaranteed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of display, in particular to a display module and a display device. BACKGROUND

[0002] The display module in the display device can include a display panel, a first cover plate and a second cover plate. The display panel can be used to display a picture, the first cover plate and the second cover plate can be stacked on the display side of the display panel, and both the first cover plate and the second cover plate can be used to protect the display panel. The display panel and the first cover plate, and the first cover plate and the second cover plate can be connected together by optical glue.

[0003] At present, in order to pursue the narrow frame of the display module, after the display panel, the first cover plate and the second cover plate are connected together, the edge of the display module needs to be cut to remove the edge part of the display module. The first cover plate is easy to break, in order to protect the first cover plate, the first cover plate can be retracted relative to the second cover plate to avoid the first cover plate being cut.

[0004] However, at present, after the first cover plate is retracted relative to the second cover plate, bubbles are easy to be generated between the edge of the first cover plate and the optical glue, which reduces the service life of the display module. SUMMARY

[0005] The embodiments of the present application provide a display module and a display device. The problem that bubbles are easy to be generated on the outer side of the first cover plate in the display module of the prior art can be solved, and the technical solution is as follows:

[0006] In one aspect, a display module is provided, which includes a display panel, a first cover plate, a second cover plate and a filling part.

[0007] The display panel has a bending area.

[0008] The first cover plate is located on the display side of the display panel.

[0009] The second cover plate is located on the side of the first cover plate away from the display panel, and the outer side of the second cover plate protrudes from the outer side of the first cover plate.

[0010] The filling part is located on the outer side of the first cover plate and is distributed between the second cover plate and the display panel.

[0011] The filling part is at least distributed in the bending area.

[0012] Optionally, the filling part includes a body part and an overflow part connected together, the body part is located on the outer side of the first cover plate, and the overflow part is located at least on the side of the body part away from the second cover plate.

[0013] Optionally, a maximum distance between a side of the overflow portion facing away from the second cover plate and a side of the first cover plate facing away from the second cover plate is less than or equal to a thickness of the first cover plate.

[0014] Optionally, the maximum distance between the side of the overflow portion facing away from the second cover plate and the side of the first cover plate facing away from the second cover plate is less than or equal to 30 microns, and the thickness of the first cover plate ranges from 20 microns to 50 microns.

[0015] Optionally, the overflow portion comprises a first sub-overflow portion and a second sub-overflow portion, the first sub-overflow portion is located at a side of the body portion facing away from the second cover plate, and the second sub-overflow portion is located at a side of the first cover plate facing away from the second cover plate.

[0016] Optionally, a distance between a side of the second sub-overflow portion facing away from the second cover plate and a side of the first cover plate facing away from the second cover plate gradually decreases to zero in a direction of the first sub-overflow portion towards the second sub-overflow portion.

[0017] Optionally, an included angle between the side of the second sub-overflow portion facing away from the second cover plate and the side of the first cover plate facing away from the second cover plate ranges from 0° to 90°.

[0018] Optionally, a ratio of a maximum width of the second sub-overflow portion to a maximum width of the body portion is less than or equal to 1.5 in a direction parallel to a bending axis of the bending region.

[0019] Optionally, the maximum width of the second sub-overflow portion is less than or equal to 0.45 millimeters, and the maximum width of the body portion ranges from 0.3 millimeters to 1.5 millimeters in the direction parallel to the bending axis of the bending region.

[0020] Optionally, the first cover plate has a groove on an outer side thereof, and the groove is located at least in the bending region.

[0021] At least part of the filling portion is located in the groove.

[0022] Optionally, a maximum width of the body portion in the filling portion is greater than or equal to a maximum width of the groove in an extension direction parallel to a bending axis of the bending region.

[0023] Optionally, the maximum width of the groove ranges from 0.3 millimeters to 0.8 millimeters in the direction parallel to the bending axis of the bending region.

[0024] Optionally, a length of the groove is greater than or equal to a width of the bending region in a direction parallel to a display side of the display panel and perpendicular to the bending axis of the bending region.

[0025] and in a direction parallel to the display side of the display panel and perpendicular to the bending axis of the bending region, 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 region; or, the length of the filling portion is greater than or equal to the length of the groove.

[0026] Optionally, in a direction parallel to the display side of the display panel and perpendicular to the bending axis of the bending region, the difference between the length of the groove and the width of the bending region is less than or equal to 10 mm.

[0027] Optionally, the display panel comprises: two bending regions, one of which is an inner bending region and the other is an outer bending region; the groove on the outer side of the first cover plate and at least distributed in the inner bending region is a first groove, and the groove on the outer side of the first cover plate and at least distributed in the outer bending region is a second groove.

[0028] In a direction parallel to the display side of the display panel and perpendicular to the bending axis of the bending region, the width of the inner bending region is less than the width of the outer bending region, and the length of the first groove is less than the length of the second groove.

[0029] Optionally, in a direction parallel to the display side of the display panel and perpendicular to the bending axis of the bending region, 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.

[0030] Optionally, the orthographic projection of the first cover plate on the second cover plate is located in the area surrounded by the outer side of the second cover plate, and the distance between the outer side of the first cover plate and the outer side of the second cover plate ranges from 0.1 mm to 0.3 mm.

[0031] Optionally, the display module further comprises: a first gel layer and a second gel layer, the first gel layer is located between the first cover plate and the second cover plate, and the second gel layer is located between the first cover plate and the display panel.

[0032] All of the filling portions are located between the first gel layer and the second gel layer.

[0033] Or, part of the filling portions are located between the first gel layer and the second gel layer, and the other part are located between the second cover plate and the display panel.

[0034] Or, the filling portions are at least located between the second cover plate and the second gel layer.

[0035] Optionally, the filling part is made of at least one of transparent material, light-reflecting material and light-absorbing material.

[0036] In another aspect, a display device is also provided, which comprises a folding housing and a display module connected with the folding housing, the display module being any of the above display modules.

[0037] The technical scheme provided by the embodiments of the present application has at least the following beneficial effects:

[0038] The display panel in the display module can be folded or unfolded through the folding area of the display panel, the first cover plate and the second cover plate can be folded along with the folding of the display panel, and the outer side surface of the second cover plate on the side away from the display panel protrudes from the outer side surface of the first cover plate. The filling part can be located on the outer side surface of the first cover plate and can be distributed between the second cover plate and the display panel. The filling part in the display module can be at least distributed in the folding area of the display panel. In this way, in the folding area of the display panel, the filling part can fill the gap between the outer side surface of the first cover plate and the outer side surface of the second cover plate, so as to ensure that the part of the outer side surface of the first cover plate located in the folding area can be covered by the filling part. In this way, during the folding of the display panel through the folding area, there will be no hollow space between the part of the outer side surface of the first cover plate located in the folding area and the second cover plate, thereby avoiding the possibility of air bubbles at the outer side surface of the first cover plate and ensuring the reliability of the display module. BRIEF DESCRIPTION OF DRAWINGS

[0039] In order to more clearly illustrate the technical scheme in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative effort.

[0040] Figure 1 is a top view of a display module provided by an embodiment of the present application;

[0041] Figure 2 is Figure 1 is a cross-sectional view of the display module at A-A';

[0042] Figure 3 is a top view of a display module provided by another embodiment of the present application;

[0043] Figure 4 is a top view of another display module provided by an embodiment of the present application;

[0044] Figure 5 is Figure 4 is a cross-sectional view of the display module at B-B'.

[0045] Figure 6 is a top view of still another display module provided by an embodiment of the present application;

[0046] Figure 7 is Figure 6 is a sectional view of the display module at C-C';

[0047] Figure 8 is a top view of still another display module provided by an embodiment of the present application;

[0048] Figure 9 is a top view of another display module provided by another embodiment of the present application;

[0049] Figure 10 is a top view of a display module provided by another embodiment of the present application;

[0050] Figure 11 is a top view of still another display module provided by another embodiment of the present application;

[0051] Figure 12 is a top view of another display module provided by another embodiment of the present application;

[0052] Figure 13 is a top view of another display module provided by another embodiment of the present application;

[0053] Figure 14 is a top view of another display module provided by another embodiment of the present application;

[0054] Figure 15 is a top view of another display module provided by another embodiment of the present application;

[0055] Figure 16 is a film layer sectional view of a display module provided by an embodiment of the present application;

[0056] Figure 17 is a film layer sectional view of another display module provided by an embodiment of the present application;

[0057] Figure 18 is a film layer sectional view of still another display module provided by an embodiment of the present application;

[0058] Figure 19 is a film layer sectional view of another display module provided by an embodiment of the present application;

[0059] Figure 20 is a film layer sectional view of a display module provided by another embodiment of the present application;

[0060] Figure 21is a cross-sectional view of a film layer of another display module provided by another embodiment of the present application;

[0061] Figure 22 is a cross-sectional view of a film layer of another display module provided by another embodiment of the present application;

[0062] Figure 23 is a cross-sectional view of a film layer of another display module provided by another embodiment of the present application;

[0063] Figure 24 is a cross-sectional view of a film layer of another display module provided by another embodiment of the present application;

[0064] Figure 25 is a cross-sectional view of a film layer of another display module provided by another embodiment of the present application. DETAILED DESCRIPTION

[0065] In order to make the objectives, technical solutions and advantages of the present application clearer, the embodiments of the present application will be further described in detail below with reference to the drawings.

[0066] The present application provides a display module, please refer to Figure 1 and Figure 2 , Figure 1 is a top view of a display module provided by an embodiment of the present application, Figure 2 is Figure 1 a cross-sectional view of the display module at A-A' is shown. The display module 000 can include a display panel 100, a first cover plate 200, a second cover plate 300 and a filling portion 400.

[0067] The display panel 100 in the display module 000 has a folding area P. The display panel 100 can be folded or unfolded through the folding area P, that is, the display panel 100 can be a foldable display panel, and thus the display module 000 with the display panel 100 can be a foldable display module.

[0068] 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 a picture, 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 (English name: Ultra-Thin Glass, abbreviated as: UTG), so that the first cover plate 100 not only has high hardness to protect the display panel 100, but also has good flexibility to fold with the display panel 100.

[0069] 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 from 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 on the second cover plate 300 can be located in the area surrounded 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 (English name: Polyethyleneterephthalate, abbreviated as PET) or polyimide (Polyimide, abbreviated as 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 be folded with the display panel 100.

[0070] Here, in the direction perpendicular to the display side of the display panel 100, the first cover plate 200 can have two oppositely arranged upper and lower surfaces, and the outer side of the first cover plate 200 is the side located between the two surfaces of the first cover plate 200. Similarly, the second cover plate 300 can have two oppositely arranged upper and lower surfaces, and the outer side of the second cover plate 300 is the side located between the two surfaces of the second cover plate 300.

[0071] It should be noted that during the manufacturing process of the display module 000, the outer side of the second cover plate 300 in the display module 000 can always protrude from the outer side 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 to ensure that the first cover plate 200 will not crack.

[0072] The filling part 400 in the display module 000 can be located on the outer side of the first cover plate 200 and can be distributed between the second cover plate 300 and the display panel 100. Among them, the filling part 400 in the display module 000 can be distributed at least in the bending area P of the display panel 100. In this way, in the bending area P of the display panel 100, the filling part 400 can fill the gap between the outer side of the first cover plate 200 and the outer side of the second cover plate 300, so that the part of the outer side of the first cover plate 200 located in the bending area P can be covered by the filling part 400. Therefore, during the bending process of the display panel 100 through the bending area P, the part of the outer side of the first cover plate 200 located in the bending area P and the second cover plate 300 will not have a hollow, thereby avoiding the possibility of air bubbles at the outer side of the first cover plate 200, and ensuring the reliability of the display module 000.

[0073] It should be noted that the distribution of the filling part 400 in the display module 000 on the outer side of the first cover plate 200 can have the following two cases:

[0074] like Figure 3 As shown, Figure 3 This 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.

[0075] In the second case, such as Figure 1 As shown, since the portion of the outer side of the first cover plate 200 located within the bending area P is the main location for air 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, thereby ensuring 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.

[0076] 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.

[0077] Optional, such as Figure 4 and Figure 5 As shown, Figure 4 This is a top view of another display module provided in an embodiment of this application. Figure 5 yes Figure 4The cross-sectional view of the display module at B-B' is shown. The filling part 400 in the display module 000 can include a body part 401 and an overflow part 402 connected to each other. The body part 401 in the filling part 400 can be located on the outer side of the first cover plate 200, and the overflow part 402 in the filling part 400 can be located on at least one side of the body part 401 away from the second cover plate 300.

[0078] For example, the side of the body part 401 in the filling part 400 away from the second cover plate 300 can be flush with the side of the first cover plate 200 away from the second cover plate 300, that is, the body part 401 can completely cover the outer side of the first cover plate 200. The overflow part 402 located on at least one side of the body part 401 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 part 400.

[0079] Optionally, as shown in Figure 5 The maximum distance D2 between the side of the overflow part 402 in the filling part 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.

[0080] Optionally, as shown in Figure 5 The maximum distance D2 between the side of the overflow part 402 in the filling part 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 30 microns, and the thickness D1 of the first cover plate 200 can range from 20 microns to 50 microns. For example, the thickness D1 of the first cover plate 200 can be 30 microns.

[0081] It should be noted that the size of the overflow part 402 in the filling part 400 can vary due to different manufacturing processes during the manufacturing process of the display module 000, so that the maximum distance D2 between the side of the overflow part 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 microns.

[0082] In one possible case, the maximum distance D2 between the side of the overflow part 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 part 400 can only include the body part 401 located on the outer side of the first cover plate 200, and the body part 401 in the filling part 400 can cover the outer side of the first cover plate 200.

[0083] In another possible case, 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 microns. In this way, the overflow portion 402 in the filling portion 400 can further cover the outer side surface of the first cover plate 200, so as to ensure that the gap between the outer side surface of the first cover plate 200 and the outer side surface of the second cover plate 300 can be completely filled by the filling portion 400.

[0084] Optionally, referring to Figure 6 and Figure 7 , Figure 6 is a top view of yet another display module provided by the embodiments of the present application, Figure 7 is Figure 6 a cross-sectional view of the display module at C-C'. The overflow portion 402 in the filling portion 400 can 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 can be located at the side of the body portion 401 facing away from the second cover plate 300, and the second sub-overflow portion 4022 in the overflow portion 402 can be located at the side of the first cover plate 200 facing away from 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 wrap the outer side surface of the first cover plate 200, which further ensures that the gap between the outer side surface of the first cover plate 200 and the outer side surface of the second cover plate 300 can be completely filled by the filling portion 400.

[0085] Optionally, as shown in Figure 7 , the distance between the side of the second sub-overflow portion 4022 in 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 gradually decrease to zero along the direction from the first sub-overflow portion 4021 to the second sub-overflow portion 4022.

[0086] 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 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 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 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 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 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 15°, 20°, 25°, 30° or 45°, etc.

[0087] Optionally, as shown in Figure 6 and Figure 7As shown, 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 body portion 401 is less than or equal to 1.5.

[0088] Optionally, as shown in Figure 5 and Figure 6 As shown, 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 body portion 401 ranges from 0.3 mm to 1.5 mm.

[0089] It should be noted that, similarly, in the manufacturing process of the display module 000, the size of the overflow portion 402 in the filling portion 400 can be different due to different manufacturing processes. 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 microns, and the width H2 of the second overflow portion 4022 in the overflow portion 402 is equal to 0, the overflow portion 402 can only include the first overflow portion 4021 located on the side of the body portion 401 away from the second cover plate 300, and the first overflow portion 4021 can further cover the outer side 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 microns, and the width H2 of the second overflow portion 4022 in the overflow portion 402 is greater than 0 and less than 0.45 mm, the overflow portion 402 can further include the 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 body portion 401, the first sub-overflow portion 4021, and the second sub-overflow portion 4022 in the filling portion 400 can wrap the outer side surface of the first cover plate 200, which further ensures that the gap between the outer side surface of the first cover plate 200 and the outer side surface of the second cover plate 300 can be completely filled by the filling portion 400.

[0090] Optionally, please refer to Figure 8 , Figure 8This is a top view of another display module provided in this application embodiment. 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 the filling portion 400 can cover 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.

[0091] 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.

[0092] like Figure 9 As shown, Figure 9 This is a top view of another display module provided in another embodiment of this application. In the case that the outer side of the first cover plate 200 does not have a groove K, 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.

[0093] like Figure 8 As shown, 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.

[0094] Optional, such as Figure 6 and Figure 8 As shown, 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. Thus, 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.

[0095] Optionally, as shown in Figure 6 and Figure 8 , the maximum width H3 of the groove K of the first cover plate 200 in the direction parallel to the bending axis of the bending region P ranges from 0.3 mm to 0.8 mm. Here, the maximum width H1 of the body part 401 in the filling part 400 in the direction parallel to the bending axis of the bending region P ranges from 0.3 mm to 1.5 mm. In this way, it is ensured that the maximum width H1 of the body part 401 in the filling part 400 in the direction parallel to the extension direction of the bending axis of the bending region P can be greater than or equal to the maximum width H3 of the groove K of the first cover plate 200.

[0096] Optionally, as shown in Figure 8 and Figure 10 , Figure 10 is a top view of a display module according to another embodiment of the present application. In the direction parallel to the display side of the display panel 100 and perpendicular to the bending axis of the bending region 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 region P.

[0097] Here, in the direction parallel to the display side of the display panel 100 and perpendicular to the bending axis of the bending region P, the length L3 of the filling part 400 can have the following two cases: as shown in Figure 8 , in the first case of the filling part 400, the length L3 of the filling part 400 can be less than the length L1 of the groove K and greater than or equal to the length L2 of the bending region P. As shown in Figure 10 , in the second case of the filling part 400, the length L3 of the filling part 400 can be greater than or equal to the length L1 of the groove K.

[0098] In this way, in the direction parallel to the display side of the display panel 100 and perpendicular to the bending axis of the bending region P, the length L3 of the filling part 400 can be greater than or equal to the length L2 of the bending region P, whether in the first case of the filling part 400 or in the second case of the filling part. In this way, it is ensured that the filling part 400 located in the groove K can completely cover the part of the outer side of the first cover plate 200 located in the bending region P.

[0099] Optionally, in the direction parallel to the display side of the display panel 100 and perpendicular to the bending axis of the bending region P, the difference between the length L1 of the groove K of the first cover plate 200 and the width L2 of the bending region P can be less than or equal to 10 mm. For example, in the direction parallel to the display side of the display panel 100 and perpendicular to the bending axis of the bending region P, the distance between the two ends of the groove K and the corresponding two ends of the bending region P can be 5 mm respectively.

[0100] It should be noted that the display panel 100 in the display module can include at least one bending area P. The above embodiments are illustratively described by taking an example 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, which is not limited in the embodiments of the present application. The following embodiments will be illustratively described by taking an example of the display panel 100 including two bending areas P. Please refer to Figure 11 , Figure 11 is a top view of another display module provided by another embodiment of the present 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.

[0101] Here, it should be noted that the inner bending area P1 of the display panel 100 is a bending area P through which the display panel 100 relatively moves the display side of the display panel 100 to fold or unfold, and the outer bending area P2 of the display panel 100 is a bending area P through which the display panel 100 relatively moves the back side of the display panel 100 to fold or unfold. Here, the back side of the display panel 100 is a 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. Here, the range of the inner bending radius of the display panel 100 can be 1 millimeter to 3 millimeters, and the range of the outer bending radius of the display panel 100 can be 2 millimeters to 5 millimeters. For example, the inner bending radius of the display panel 100 can be 1.5 millimeters, and the outer bending radius of the display panel 100 can be 3 millimeters. Therefore, in a 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 of the display panel 100 can be smaller than the width L22 of the outer bending area P2 of the display panel 100.

[0102] In the present application, when the display panel 100 includes the inner bending area P1 and the outer bending area P2, the display panel 100 can be in a completely unfolded state, that is, the inner bending area P1 and the outer bending area P2 of the display panel 100 are both unfolded. Alternatively, the display panel 100 can be in a half-unfolded and half-folded state, that is, one of the inner bending area P1 and the outer bending area P2 of the display panel 100 is folded, and the other is unfolded. Alternatively, the display panel 100 can be in a completely folded state, that is, the inner bending area P1 and the outer bending area P2 of the display panel 100 are both folded.

[0103] Optionally, the grooves K in the first cover plate 200 located on the outer side of the first cover plate 200 and distributed at least in the inner bending area P1 can be first grooves K1, and the grooves K in the first cover plate 200 located on the outer side of the first cover plate 200 and distributed at least in the outer bending area P2 can be second grooves 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, since the width L21 of the inner bending area P1 is smaller than the width L22 of the outer bending area P2, the length L11 of the first grooves K1 distributed at least in the inner bending area P1 is smaller than the length L12 of the second grooves K2 distributed at least in the outer bending area P2.

[0104] Here, the lengths L of the grooves K distributed in different bending areas P are different, and as known from the above, 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 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 groove K distributed in different bending areas P can be determined according to the width L2 of the corresponding bending area P.

[0105] Optionally, 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 L11 of the first groove K1 distributed at least in the inner bending area P1 ranges from 10 mm to 15 mm, and the length L12 of the second groove K2 distributed at least in the outer bending area P2 ranges from 12 mm to 18 mm. For example, the length L11 of the first groove K1 distributed at least in the inner bending area P1 can be 11.6 mm, and the length L12 of the second groove K2 distributed at least in the outer bending area P2 can be 14.6 mm.

[0106] It should be noted that 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 L3 of the filling part 400 distributed at least in the groove K can be determined according to the length L1 of the corresponding groove K and the width L2 of the bending area P. And the distribution of the filling part 400 in the groove K has the above two cases, that is, 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 L3 of the filling part 400 is smaller 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 part 400 is greater than or equal to the length L1 of the groove K.

[0107] Therefore, 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 filling part 400 distributed at least in the first groove K1 has the following two distribution cases: as shown in FIG. 6A, the length L3 of the filling part 400 is smaller than the length L1 of the first groove K1 and greater than or equal to the width L21 of the inner bending area P1; or as shown in FIG. 6B, the length L3 of the filling part 400 is greater than or equal to the length L1 of the first groove K1. Figure 11As shown, the length L3 of the filling portion 400 distributed at least 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 area P1, or, as shown, Figure 12 As shown, Figure 12 As shown, the length L3 of the filling portion 400 distributed at least 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 area P1, or, as shown, Figure 11 As shown, the length L3 of the filling portion 400 distributed at least 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 area P1, or, as shown, Figure 12 As shown, the length L3 of the filling portion 400 distributed at least 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 area P1, or, as shown,

[0108] It should be noted that regarding the two distribution situations of the filling portion 400 in 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, in the case that 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, 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 millimeters. 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 millimeters respectively. In the case that 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 millimeters, and for example, the distance between the two ends of the filling portion 400 and the two ends of the groove K can be 5 millimeters respectively.

[0109] Therefore, based on the two distribution situations of the filling portion 400 in the first groove K1 and the two distribution situations of the filling portion 400 in the 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 length L3 of the filling portion 400 can have two different length ranges of 13 millimeters to 18 millimeters and 17 millimeters to 22 millimeters.

[0110] In this way, based on the two distribution situations of the filling portion 400 in the first groove K1 and the two distribution situations of the filling portion 400 in the 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 distribution of the filling portion 400 in the groove K of the first cover plate 200 has the following four situations:

[0111] In the first situation, as shown, Figure 11As shown, the length L3 of the filling portion 400 distributed at least 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 bending area P1, and the length L3 of the filling portion 400 can range from 13 mm to 18 mm. The length L3 of the filling portion 400 distributed at least in the second groove K2 is greater than or equal to the length L12 of the second groove K2, and the length L3 of the filling portion 400 can range from 17 mm to 22 mm.

[0112] In the second case, as shown in FIG. 4B, Figure 12 As shown, the length L3 of the filling portion 400 distributed at least in the first groove K1 is greater than or equal to the length L11 of the first groove K1, and the length L3 of the filling portion 400 can range from 17 mm to 22 mm. The length L3 of the filling portion 400 distributed at least in the second groove K2 is greater than or equal to the length L12 of the second groove K2, and the length L3 of the filling portion 400 can range from 17 mm to 22 mm.

[0113] In the third case, as shown in FIG. 4C, Figure 13 As shown, Figure 13 FIG. 4D is a top view of another display module according to another embodiment of the present application. The length L3 of the filling portion 400 distributed at least 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 bending area P1, and the length L3 of the filling portion 400 can range from 13 mm to 18 mm. The length L3 of the filling portion 400 distributed at least in the second groove K2 is greater than or equal to the length L12 of the second groove K2, and the length L3 of the filling portion 400 can range from 17 mm to 22 mm.

[0114] In the fourth case, as shown in FIG. 4E, Figure 14 As shown, Figure 14 FIG. 4F is a top view of still another display module according to another embodiment of the present application. The length L3 of the filling portion 400 distributed at least in the first groove K1 is greater than or equal to the length L11 of the first groove K1, and the length L3 of the filling portion 400 can range from 17 mm to 22 mm. The length L3 of the filling portion 400 distributed at least 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 bending area P2, and the length L3 of the filling portion 400 can range from 13 mm to 18 mm.

[0115] It should be noted that in the case that the display panel in the display module 000 only includes one bending area P, 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 distributed at least in the bending area P can be determined according to the width L2 of the bending area P. And the length L3 of the filling part 400 can be determined according to the length L1 of the groove K and the two different cases that the filling part 400 is distributed in the groove K. That is, as shown in Figure 8 , the length L3 of the filling part 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 part 400 can be greater than or equal to the length L1 of the groove K.

[0116] In the present application, as shown in Figure 15 , Figure 15 is a top view of another display module provided by another embodiment of the present application. The orthographic projection of the first cover plate 200 in the display module 000 on the second cover plate 300 can be located in the area surrounded 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.

[0117] 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, and 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, and 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.

[0118] It should also be noted that during the manufacturing process of the display module 000, when the edge of the display module 000 is not cut, in the direction parallel to the bending area P, the width B2 of the second cover plate 300 can be 160 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 C2 of the second cover plate 300 can be 219 mm.

[0119] In the present application, please refer to Figure 16 , Figure 16is a film layer cross-sectional view of a display module provided by an embodiment of the present application. The display module 000 can further include a first adhesive layer 500 and a second adhesive layer 600. The first adhesive layer 500 in the display module 000 can be located between the first cover plate 200 and the second cover plate 300, that is, the first adhesive layer 500 can be used to connect the first cover plate 200 and the second cover plate 300. The second adhesive layer 600 in the display module 000 can be located between the first cover plate 200 and the display panel 100, that is, the second adhesive layer 600 can be used to connect the first cover plate 200 and the display panel 100.

[0120] It should be noted that the orthographic projection of the first cover plate 200 in the display module 000 on the first adhesive layer 500 can be located in the area surrounded by the outer side surface of the first adhesive layer 500, and the orthographic projection of the first cover plate 200 on the second adhesive layer 600 can be located in the area surrounded by the outer side surface of the second adhesive layer 600. Moreover, the orthographic projection of the first adhesive layer 500 and the second adhesive layer 600 on the second cover plate 300 can be located in the area surrounded by the outer side surface of the second cover plate 300. That is, the outer side surface of the first cover plate 200 can be located between the outer side surface of the second cover plate 300 and the outer side surface of the first adhesive layer 500, and can be located between the outer side surface of the second cover plate 300 and the outer side surface of the second adhesive layer 600.

[0121] It should be further noted that the overflow portion 402 in the filling portion 400 is at least distributed between the first cover plate 200 and the second adhesive layer 600, and 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.

[0122] It should be further noted that, according to the distance between the outer side surface of the first adhesive layer 500 and the outer side 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:

[0123] In the first case, as shown in Figure 17 , Figure 17 is another film layer cross-sectional view of a display module provided by an embodiment of the present application. The outer side surface of the first adhesive layer 500 can coincide with the outer side surface of the second adhesive layer 600, and the filling portion 400 in the display module 000 can be located entirely between the first adhesive layer 500 and the second adhesive layer 600, and part of the outer side surface of the filling portion 400 can coincide with the outer side surface of the first adhesive layer 500.

[0124] In the second case, as shown in Figure 18 , Figure 18is another cross-sectional view of a film layer of a display module provided by an embodiment of the present application. The outer side of the first adhesive layer 500 can coincide with the outer side of the second adhesive layer 600, and part of the filling portion 400 can be located between the first adhesive layer 500 and the second adhesive layer 600, and another part can be located between the second cover plate 300 and the display panel 100. That is, the part of the filling portion 400 located between the second cover plate 300 and the display panel 100 can cover at least the outer sides of the first adhesive layer 500 and the second adhesive layer 600. In this way, the filling portion 400 can cover the outer sides of the first adhesive layer 500, the first cover plate 200 and the second adhesive layer 600.

[0125] In the third case, as shown in Figure 19 Figure 19 is another cross-sectional view of a film layer of a display module provided by an embodiment of the present application. The orthographic projection of the first adhesive layer 500 on the second adhesive layer 600 can be located in the area surrounded by the outer side of the second adhesive layer 600, and the outer side of the first adhesive layer 500 can coincide with the outer side of the first cover plate 200. The filling portion 400 is located at least between the second cover plate 300 and the second adhesive layer 600, that is, at least part of the filling portion 400 can cover the outer sides of the first cover plate 200 and the first adhesive layer 500 at the same time.

[0126] Optionally, the filling portion 400 in the display module 000 can be made of at least one of transparent material, light-reflecting material and light-absorbing material.

[0127] It should be noted that the first adhesive layer 500 and the second adhesive layer 600 in the display module 000 need to be made of transparent material. For example, the first adhesive layer 500 and the second adhesive layer 600 can be made of optical adhesive (English name: Optically Clear Adhesive, abbreviated as OCA), or the filling portion 400 can be made of optical resin (English name: Optical Clear Resin, abbreviated as OCR). Therefore, the filling portion 400 in the display module 000 can be made of transparent material, such as OCR or OCA, that is, the filling portion 400 and the first adhesive layer 500 can be made of the same transparent material.

[0128] It should also be noted that, as shown in Figure 19 ​As shown in FIG. 1, when the filling part 400 in the display module 000 is made of light-absorbing material, for example, ink, part of the filling part 400 can be located between the first gel layer 500 and the second cover plate 300, so that the outer side of the first cover plate 200 can be located in the area surrounded by the outer side of the filling part 400. In this way, the outer side of the first cover plate 200 can be blocked by the filling part 400 made of light-absorbing material, so as to ensure that the user cannot observe the outer side of the first cover plate 200 through the second cover plate 300.

[0129] Alternatively, as shown in FIG. 2, when the filling part 400 in the display module 000 is made of transparent material, the display module 000 can further include a light-absorbing layer 700. The light-absorbing layer 700 in the display module 000 can be located between the second cover plate 300 and the first gel layer 500, and the outer side of the first cover plate 200 can be located in the area surrounded by the outer side of the light-absorbing layer 700. In this way, the outer side of the first cover plate 200 can be blocked by the light-absorbing layer 700, so as to ensure that the user cannot observe the outer side of the first cover plate 200 through the second cover plate 300. Figure 16

[0130] It should be further noted that the part of the filling part 400 located between the second cover plate 300 and the first gel layer 500 can be covered by the first gel layer 500, or the light-absorbing layer 700 in the display module 000 can be covered by the first gel layer 500, so as to ensure the flatness of the connection between the second cover plate 300 and the first cover plate 200.

[0131] In the present application, in 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 first bonded together through the first gel layer 500. And in the process of connecting the first cover plate 200 and the second cover plate 300, the light-absorbing layer 700 can be first manufactured on the side of the second cover plate 300 facing the first cover plate 200, then the first gel layer 500 can be manufactured on the side of the light-absorbing layer 700 away from the second cover plate 300, and the first gel layer 500 can cover the light-absorbing layer 700. Finally, the first cover plate 200 can be bonded to the second cover plate 300 through the first gel layer 500.

[0132] As shown in FIG. 3, Figure 20 Figure 20 ​​is a film layer cross-sectional view of a display module provided by another embodiment of the present application. After the first cover plate 200 and the second cover plate 300 are bonded 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 attached to the side of the second cover plate 300 away from the first cover plate 200, and a second protective layer 802 can be attached to the side of the first cover plate 200 away from the second cover plate 300. In this way, during transportation in subsequent 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.

[0133] Next, as shown in Figure 21 , Figure 21 is another film layer cross-sectional view of a display module provided by another embodiment of the present application. Before the filling portion 400 is manufactured, 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 surface of the first cover plate 200 can be located within the area surrounded by the opening V of the third protective layer 803. In order to avoid contamination of the first cover plate 200 by foreign matter from the outside through the opening V, the side of the third protective layer 803 away from the first cover plate 200 needs to be attached with a fourth protective layer 804.

[0134] As shown in Figure 22 and Figure 23 , Figure 22 is yet another film layer cross-sectional view of a display module provided by another embodiment of the present application, Figure 23 is still another film layer cross-sectional view of a display module provided by another embodiment of the present 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 side surface of the first cover plate 200 through the opening V of the third protective layer 803, so that the outer side surface of the first cover plate 200 can be covered by the filling portion 400.

[0135] It should be noted that, during the manufacturing process of the filling portion 400, since the overflow portion 402 in the filling portion 400 can include a second overflow portion 4022, therefore, the orthographic projection of the outer side surface of the first cover plate 200 on the opening V of the third protective layer 803 needs to be located within the area surrounded by the contour of the opening V, and the distance H5 between the outer side surface of the first cover plate 200 and the contour of the opening V can range from 0.1 mm to 10 mm.

[0136] Finally, as shown in Figure 24 , Figure 24is a film layer cross-sectional view of a display module provided by another embodiment of the present application. After the filling part 400 is manufactured, in order to avoid contamination of the filling part 400 by foreign matter from outside through the opening V of the third protective layer 803, the side of the third protective layer 803 facing away from the first cover plate 200 needs to be attached with a fifth protective layer 805.

[0137] After the first cover plate 200 and the second cover plate 300 are bonded together by the first adhesive layer 500, and the filling part 400 is connected to the outer side of the first cover plate 200, the first cover plate 200 and the display panel 100 can be further bonded together by the second adhesive layer 600, and the second adhesive layer 600 can cover the overflow part 402 in the filling part 400, so as to ensure the flatness of the connection between the first cover plate 200 and the display panel 100. In this way, the manufacturing of the display module 000 can be realized.

[0138] In the present application, please refer to Figure 25 , Figure 25 is another film layer cross-sectional view of a display module provided by another embodiment of the present application. The display module 000 can further include a support layer 900. The support layer 900 in the display module 000 can be located on the side of the display panel 100 facing away from the first cover plate 200, and the support layer 900 in the display module 000 can be used to support the display module 000. The support layer 900 in the display module 000 also needs to be bent along with the bending of the display panel 100.

[0139] It should be noted that the flexibility of the support layer 900 in the display module 000 is generally poor, in order to ensure that the support layer 900 can be bent along with the bending of the display panel 100, the support layer 900 needs to be provided with a hollow area in the bending area to increase the flexibility of the bending area of the support layer 900, so as to ensure that the support layer 900 can be bent through the bending area. In the case where the display panel 100 includes an inner bending area P1 and an outer bending area P2, the support layer 900 also needs to include an inner bending area and an outer bending area. 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 of the support layer 900 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 of the support layer 900 can be 13.5 mm.

[0140] In summary, the display module provided by the embodiments of the present application comprises a display panel, a first cover plate, a second cover plate and a filling part. The display panel can be folded or unfolded through the folding area of the display panel. The first cover plate and the second cover plate can be folded along with the folding of the display panel, and the outer side of the second cover plate located on the side of the first cover plate away from the display panel protrudes from the outer side of the first cover plate. The filling part can be located on the outer side of the first cover plate and can be distributed between the second cover plate and the display panel. In the display module, the filling part can be distributed at least in the folding area of the display panel. In this way, in the folding area of the display panel, the filling part can fill the gap between the outer side of the first cover plate and the outer side of the second cover plate, so as to ensure that the part of the outer side of the first cover plate located in the folding area can be covered by the filling part. In this way, during the folding of the display panel through the folding area, no cavity will be generated between the part of the outer side of the first cover plate located in the folding area and the second cover plate, thereby avoiding the possibility of generating bubbles at the outer side of the first cover plate and ensuring the reliability of the display module.

[0141] The display device provided by the embodiments of the present application can comprise a folding shell and a display module connected with the folding shell. The display module in the display device can be any of the display modules described above. Through the connection between the folding shell and the display module in the display device, the user can drive the folding or unfolding of the display module by driving the folding or unfolding of the folding shell, thereby realizing the folding or unfolding of the display device. In this way, the user can meet different needs of the user through the folding or unfolding of the display device. For example, when the user needs to carry the display device, the display device can be folded to reduce the volume and improve the portability. When the user uses the display device, the display device can be unfolded to provide a larger display area and operation area, thereby improving the use convenience. The display device can be a mobile phone, a tablet computer, a notebook computer, an electronic book or the like.

[0142] It should be noted that in the drawings, the sizes of the layers and regions can be exaggerated for clarity. It should also be 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 layer, or intervening layers can also be present. In addition, it should be understood that when an element or layer is referred to as being "under" another element or layer, it can be directly under the other element or layer, or one or more intervening layers or elements can also be present. In addition, it should also be understood that when a layer or element is referred to as being "between" two layers or elements, it can be the only layer or element between the two layers or elements, or one or more intervening layers or elements can also be present. Similar reference numerals indicate similar elements throughout the specification.

[0143] In the present application, the terms "first" and "second" are used only for descriptive purposes and are not to be construed as indicating or implying relative importance. The term "a plurality" refers to two or more, unless otherwise indicated.

[0144] The above description is only optional embodiments of the present application, and is not used to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A display module, characterized by The application relates to a display panel (100), a first cover plate (200), a second cover plate (300) and a 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 part (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 part (400) is at least distributed in the bending area (P). The filling part (400) comprises a body part (401) and an overflow part (402) connected to each other; the body part (401) is located on the outer side of the first cover plate (200), and the overflow part (402) is at least located on the side of the body part (401) away from the second cover plate (300).

2. The display module of claim 1, wherein, The maximum distance (D2) between the side of the overflow part (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).

3. The display module of claim 2, wherein, The maximum distance (D2) between the side of the overflow part (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 microns, and the thickness (D1) of the first cover plate (200) ranges from 20 microns to 50 microns.

4. The display module of claim 2, wherein, The overflow part (402) comprises a first sub-overflow part (4021) and a second sub-overflow part (4022); the first sub-overflow part (4021) is located on the side of the body part (401) away from the second cover plate (300), and the second sub-overflow part (4022) is located on the side of the first cover plate (200) away from the second cover plate (300).

5. The display module of any one of claims 2 to 4, wherein, The distance between the side of the second sub-overflow part (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 in the direction of the first sub-overflow part (4021) towards the second sub-overflow part (4022).

6. The display module of claim 5, wherein, The included angle between the side of the second sub-overflow part (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 DEG to 90 DEG.

7. The display module of claim 5, wherein, In the direction parallel to the bending axis of the bending area (P), the ratio of the maximum width (H2) of the second sub-overflow part (4022) to the maximum width (H1) of the body part (401) is less than or equal to 1.

5.

8. The display module of claim 5, wherein, ​ 9. The display module of claim 5, wherein, A maximum width (H2) of the second sub-overflow portion (4022) in a direction parallel to a bending axis of the bending region (P) is less than or equal to 0.45 mm, and a maximum width (H1) of the body portion (401) ranges from 0.3 mm to 1.5 mm.

10. The display module of any of claims 1-4, 6-9, wherein, The first cover plate (200) has a groove (K) on an outer side thereof, and the groove (K) is located at least in the bending region (P). At least part of the filling portion (400) is located in the groove (K).

11. The display module of claim 10, wherein, A maximum width (H1) of the body portion (401) in the filling portion (400) in a direction parallel to a bending axis of the bending region (P) is greater than or equal to a maximum width (H3) of the groove (K).

12. The display module of claim 11, wherein, The maximum width (H3) of the groove (K) ranges from 0.3 mm to 0.8 mm in a direction parallel to a bending axis of the bending region (P).

13. The display module of claim 10, wherein, A length (L1) of the groove (K) is greater than or equal to a width (L2) of the bending region (P) in a direction parallel to a display side of the display panel (100) and perpendicular to a bending axis of the bending region (P). A 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 region (P) in the direction parallel to the display side of the display panel (100) and perpendicular to the bending axis of the bending region (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 of claim 13, wherein, A difference between the length (L1) of the groove (K) and the width (L2) of the bending region (P) is less than or equal to 10 mm in the direction parallel to the display side of the display panel (100) and perpendicular to the bending axis of the bending region (P).

15. The display module of any of claims 11 to 14, wherein, The display panel (100) includes two bending regions (P), one of which is an inner bending region (P1) and the other of which is an outer bending region (P2); the groove (K) located on the outer side of the first cover plate (200) and distributed at least in the inner bending region (P1) is a first groove (K1), and the groove (K) located on the outer side of the first cover plate (200) and distributed at least in the outer bending region (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 region (P), the width (L21) of the inner bending region (P1) is less than the width (L22) of the outer bending region (P2), and the length (L11) of the first groove (K1) is less than the length (L12) of the second groove (K2).

16. The display module of claim 15, wherein, 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 in the direction parallel to the display side of the display panel (100) and perpendicular to the bending axis of the bending region (P).

17. The display module of any of claims 1-4, 6-9, 11-14, 16, wherein, The first cover plate (200) is projected on the second cover plate (300) in the area surrounded 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 0.1mm to 0.3mm.

18. The display module of any of claims 1-4, 6-9, 11-14, 16, wherein, The display module further comprises a first gel layer (500) and a second gel layer (600), the first gel layer (500) is located between the first cover plate (200) and the second cover plate (300), and the second gel layer (600) is located between the first cover plate (200) and the display panel (100); All of the filling parts (400) are located between the first gel layer (500) and the second gel layer (600); Or, part of the filling parts (400) are located between the first gel layer (500) and the second gel layer (600), and the other part is located between the second cover plate (300) and the display panel (100); Or, the filling parts (400) are at least located between the second cover plate (300) and the second gel layer (600).

19. The display module of claim 18, wherein, The filling parts (400) are made of at least one of transparent material, light-reflecting material and light-absorbing material.

20. A display device, characterized by Comprise: A folding shell and a display module connected to the folding shell, the display module is any one of claims 1-19. A folding shell and a display module connected to the folding shell, the display module is any one of claims 1-19.

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