Display module and display device

Abstract

The invention relates to a display module and a display device, and the display module comprises a display panel which comprises a display area, a bending area located on one side of the display area, and a binding area located on the side, away from the display area, of the bending area, and the binding area is bent towards the side, away from the light-emitting surface of the display module, of the bending area; the first back plate is positioned on one side of the display area deviating from the light-emitting surface; the second back plate is positioned on one side, facing the light emitting surface, of the binding area, and is arranged opposite to the first back plate; the protection structure is located between the first back plate and the second back plate, and at least part of orthographic projection of the protection structure on the first back plate is located at the end, close to the bending area, of the first back plate. The problems that when the display module is impacted by external force, the lower edge of the functional film layer is prone to being damaged, the preparation yield is reduced, and the service life is prolonged can be solved.

Description

Technical Field

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

[0002] Flexible display panels have become a focus of research in the display field because of their bendability and ability to achieve a larger display area.

[0003] In a display device assembled using a flexible display panel, a functional film layer (such as a polarizer) is usually attached to one side of the flexible display panel. However, in existing display devices, when the display device is subjected to external impact (such as falling or bending the component during the manufacturing process), the display panel at the lower edge of the functional film layer is easily damaged, reducing the manufacturing yield and service life. Summary of the invention

[0004] Functional film layer.

[0005] In a first aspect, an embodiment of the present application provides a display module, including:

[0006] The display panel comprises a display area and a bending area located at one side of the display area, and a binding area located at a side of the bending area away from the display area, wherein the binding area is bent toward a side away from a light emitting surface of the display module;

[0007] A first back plate, located at a side of the display area away from the light emitting surface;

[0008] A second back plate, located at a side of the binding area facing the light emitting surface and arranged opposite to the first back plate;

[0009] The protection structure is located between the first back plate and the second back plate, and at least a partial projection of the protection structure on the first back plate is located on an end of the first back plate close to the bending area.

[0010] In the second aspect, based on the same inventive concept, an embodiment of the present application further provides a display device, which includes the display module provided in the first aspect.

[0011] In an embodiment of the present application, a protective structure is provided in the display module, and the protective structure is located between the first back plate and the second back plate, and at least a partial projection of the protective structure on the first back plate is located on one end of the first back plate close to the bending zone. In one embodiment, the protective structure has a large Young's modulus, and the protective structure is not easily deformed. The protective structure can prevent the film layer of the display panel at the lower edge of the functional film layer (the edge of the functional film layer close to the bending zone) from undergoing large deformation, thereby improving or avoiding the problem of damage such as breakage or cracking of the film layer of the display panel at the lower edge of the functional film layer (the edge of the functional film layer close to the bending zone); in another embodiment, the protective structure has a large elasticity, and can play a good buffering role, and external forces such as impact are not easy to directly act on the film layer of the display panel at the lower edge of the functional film layer (the edge of the functional film layer close to the bending zone), thereby avoiding the lower edge of the functional film layer (the edge of the functional film layer close to the bending zone) The film layer of the display panel is damaged by breakage or cracks; in another embodiment, the protective structure has at least two parts or at least two materials, so that a part of the protective structure has a larger Young's modulus, so that a part of the protective structure has greater elasticity and buffering effect. When the protective structure can prevent the film layer of the display panel at the lower edge of the functional film layer (the edge of the functional film layer close to the bending area) from undergoing large deformation, it can also play a good buffering role. External forces such as impact are not easy to directly act on the film layer of the display panel at the lower edge of the functional film layer (the edge of the functional film layer close to the bending area), thereby preventing the film layer of the display panel at the lower edge of the functional film layer (the edge of the functional film layer close to the bending area) from undergoing breakage or cracks. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the conventional technology, the drawings required for use in the embodiments or the conventional technology descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0013] Figure 1 A schematic diagram of a first cross-sectional structure of a display module provided in an embodiment of the present application.

[0014] Figure 2 A schematic diagram of a second cross-sectional structure of a display module provided in an embodiment of the present application.

[0015] Figure 3 This is a schematic diagram of a third cross-sectional structure of a display module provided in an embodiment of the present application.

[0016] Figure 4This is a schematic diagram of a fourth cross-sectional structure of a display module provided in an embodiment of the present application.

[0017] Figure 5 This is a schematic diagram of a fifth cross-sectional structure of a display module provided in an embodiment of the present application.

[0018] Figure 6 This is a schematic diagram of a sixth cross-sectional structure of a display module provided in an embodiment of the present application.

[0019] Figure 7 This is a schematic diagram of a seventh cross-sectional structure of a display module provided in an embodiment of the present application.

[0020] Figure 8 This is a schematic diagram of an eighth cross-sectional structure of a display module provided in an embodiment of the present application.

[0021] Fig. 9 This is a schematic diagram of a ninth cross-sectional structure of a display module provided in an embodiment of the present application.

[0022] Fig.10 A schematic diagram of a display device provided in an embodiment of the present application.

[0023] Description of reference numerals:

[0024] Display device 300; display module 200; display panel 10; first back plate 21a; second back plate 21b; protection structure 50; display area 10A; bending area 10B; binding area 10C; substrate 11; display function layer 12; driving chip 40; function film layer 13; optical adhesive layer 14; protection cover plate 15;

[0025] first supporting structure 31; first space portion 101; first sub-space portion 101a; second sub-space portion 101b; first sub-protective structure 50a; second sub-protective structure 50b; cavity 501;

[0026] The second supporting structure 41 ; the second space portion 102 ; and the buffer structure 60 . DETAILED DESCRIPTION

[0027] In order to facilitate understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. The present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive.

[0028] The terms used in the specification of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0029] When describing positional relationships, unless otherwise specified, when an element such as a layer, film, or substrate is referred to as being "on" another element, it can be directly on the other element or there may be intervening elements. Further, when a layer is referred to as being "under" another layer, it can be directly under or there may be one or more intervening elements. It is also understood that when a layer is referred to as being "between" two layers, it can be the only layer between the two layers or there may be one or more intervening elements.

[0030] In the case of using “including”, “having”, and “comprising” described herein, another component may be added unless a clear limiting term such as “only”, “consisting of”, etc. is used. Unless mentioned otherwise, a term in the singular form may include a plural form and should not be understood as being one in number.

[0031] It should be understood that although the terms "first", "second", etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another element. For example, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element without departing from the scope of the present application.

[0032] It should also be understood that when interpreting an element, even if not explicitly described, the element is interpreted as including a range of error, which should be within the acceptable deviation range of the specific value determined by those skilled in the art. For example, "approximately", "approximately" or "substantially" can mean within one or more standard deviations, which are not limited here.

[0033] Furthermore, in the specification, the phrase “planar distribution schematic diagram” refers to a drawing when a target portion is viewed from above, and the phrase “cross-sectional schematic diagram” refers to a drawing when a section taken by vertically cutting the target portion is viewed from the side.

[0034] It is obvious to those skilled in the art that various modifications and changes can be made in this application without departing from the spirit or scope of this application. Therefore, this application is intended to cover modifications and changes of this application that fall within the scope of the corresponding claims (technical solutions claimed for protection) and their equivalents. It should be noted that the implementation methods provided in the embodiments of this application can be combined with each other without contradiction.

[0035] In addition, the drawings are not drawn to a 1:1 scale, and the relative sizes of the elements in the drawings are drawn only as examples and not necessarily according to the true scale.

[0036] In the related art, when the display module is subjected to external impact (such as falling or bending the component during the manufacturing process), the film layer of the display panel at the lower edge of the functional film layer (such as the polarizer) is easily damaged (such as Figure 1 The middle dotted circle XQ1 is damaged, for example, the wiring in the display panel is broken), which reduces the production yield and service life. The inventors found that the reasons for the above phenomenon are: the film layer of the display panel at the lower edge of the functional film layer (the edge of the functional film layer close to the bending area) is prone to great deformation, resulting in the film layer of the display panel at the lower edge of the functional film layer (the edge of the functional film layer close to the bending area) being broken or cracked; or, the film layer of the display panel at the lower edge of the functional film layer (the edge of the functional film layer close to the bending area) is prone to large external forces, the stress on the film layer of the display panel at the lower edge of the functional film layer is too large, and other film layers do not have sufficient elasticity, resulting in external forces such as impact directly acting on the film layer of the display panel at the lower edge of the functional film layer (the edge of the functional film layer close to the bending area), resulting in the film layer of the display panel at the lower edge of the functional film layer (the edge of the functional film layer close to the bending area) being broken or cracked.

[0037] Based on the above technical problems, the inventors have found that a protective structure is provided in the display module, and the protective structure is located between the first back plate and the second back plate, and at least part of the positive projection of the protective structure on the first back plate is located on one end of the first back plate close to the bending zone. In one embodiment, the protective structure has a large Young's modulus, and the protective structure is not easily deformed. The protective structure can avoid large deformation of the film layer of the display panel at the lower edge of the functional film layer (the edge of the functional film layer close to the bending zone), thereby improving or avoiding the problem of damage such as breakage or cracks in the film layer of the display panel at the lower edge of the functional film layer (the edge of the functional film layer close to the bending zone); in another embodiment, the protective structure has large elasticity and can play a good buffering role, and external forces such as impact are not easy to directly act on the film layer of the display panel at the lower edge of the functional film layer (the edge of the functional film layer close to the bending zone), thereby avoiding the lower edge of the functional film layer (the edge of the functional film layer close to the bending zone) The film layer of the display panel is damaged by breakage or cracks; in another embodiment, the protective structure has at least two parts or at least two materials, so that a part of the protective structure has a larger Young's modulus, so that a part of the protective structure has greater elasticity and buffering effect. When the protective structure can prevent the film layer of the display panel at the lower edge of the functional film layer (the edge of the functional film layer close to the bending area) from undergoing large deformation, it can also play a good buffering role. External forces such as impact are not easy to directly act on the film layer of the display panel at the lower edge of the functional film layer (the edge of the functional film layer close to the bending area), thereby preventing the film layer of the display panel at the lower edge of the functional film layer (the edge of the functional film layer close to the bending area) from undergoing breakage or cracks.

[0038] The above is the core idea of ​​this application. The technical solutions in the embodiments of this application will be described clearly and completely below in conjunction with the drawings in the embodiments of this application. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0039] See also Figures 1 to 9 . Figure 1 A schematic diagram of a first cross-sectional structure of a display module provided in an embodiment of the present application. Figure 2 A schematic diagram of a second cross-sectional structure of a display module provided in an embodiment of the present application. Figure 3 This is a schematic diagram of a third cross-sectional structure of a display module provided in an embodiment of the present application. Figure 4 This is a schematic diagram of a fourth cross-sectional structure of a display module provided in an embodiment of the present application. Figure 5 This is a schematic diagram of a fifth cross-sectional structure of a display module provided in an embodiment of the present application. Figure 6 This is a schematic diagram of a sixth cross-sectional structure of a display module provided in an embodiment of the present application. Figure 7 This is a schematic diagram of a seventh cross-sectional structure of a display module provided in an embodiment of the present application. Figure 8 This is a schematic diagram of an eighth cross-sectional structure of a display module provided in an embodiment of the present application. Fig. 9 This is a schematic diagram of a ninth cross-sectional structure of a display module provided in an embodiment of the present application.

[0040] The present application provides a display module 200, which includes a display panel 10, a first back panel 21a, a second back panel 21b and a protective structure 50. The display panel 10 includes a display area 10A and a bending area 10B located on one side of the display area 10A, and a binding area 10C located on a side of the bending area 10B away from the display area 10A, wherein the binding area 10C is bent toward a side away from a light emitting surface of the display module 200; the first back panel 21a is located on a side of the display area 10A away from the light emitting surface; the second back panel 21b is located on a side of the binding area 10C facing the light emitting surface, and is arranged opposite to the first back panel 21a; the protective structure 50 is located between the first back panel 21a and the second back panel 21b, and at least a partial positive projection of the protective structure 50 on the first back panel 21a is located on an end of the first back panel 21a close to the bending area 10B.

[0041] For example, the display panel 10 may include a substrate 11 and a display function layer 12 . The display function layer 12 may include a plurality of display pixels. The display pixels may include light-emitting devices. The structure and display type of the display function layer 12 are not limited herein.

[0042] For example, the display area 10A, the bending area 10B and the binding area 10C are connected in sequence, the display area 10A is provided with a display function layer 12, the bending area 10B can be bent to achieve a narrow frame, and the binding area 10C can be electrically connected to a driving chip 40 or a circuit board.

[0043] For example, Figure 1 and Figure 2 As shown in the figure, the display module 200 also includes a functional film layer 13 (such as a polarizer, an insulating layer, a touch film layer, etc.) attached to the side of the display function layer 12 away from the substrate 11 (the functional film layer 13 is attached to the light-emitting surface of the display panel 10), and a protective cover plate 15 (CG, Cover Glass) attached to the side of the functional film layer 13 away from the substrate 11 through an optically clear adhesive layer 14 (Optically Clear Adhesive, OCA). The material of the protective cover plate 15 can be glass or ultra-thin glass, etc., and the material of the protective cover plate 15 is not limited here.

[0044] For example, Figure 1 and Figure 2 As shown in FIG. 1 , the side of the protective cover plate 15 away from the substrate 11 is the display area 10A or the light emitting surface of the display panel 10 , that is, the light emitted by the display panel 10 is emitted from the functional film layer 13 and the protective cover plate 15 to the human eye.

[0045] For example, Figure 1 and Figure 2 As shown, the first backplane 21a is attached to the side of the substrate 11 away from the display function layer 12. The second backplane 21b is attached to the same side of the substrate 11 as the first backplane 21a, and the second backplane 21b is attached to the binding area 10C.

[0046] For example, Figure 1 and Figure 2 As shown, after the bending area 10B is bent, the display area 10A and the binding area 10C are arranged back to back or opposite to each other, and the first back panel 21a is located on the side of the display area 10A away from the light emitting surface; the second back panel 21b is located on the side of the binding area 10C facing the light emitting surface and is arranged opposite to the first back panel 21a.

[0047] For example, Figures 2 to 9 As shown, the protective structure 50 is located between the first back plate 21a and the second back plate 21b, and at least part of the orthographic projection of the protective structure 50 on the first back plate 21a is located on one end of the first back plate 21a close to the bending area 10B. That is, the protective structure 50 is close to the bending area 10B, and in a direction perpendicular to the plane where the first back plate 21a is located, the protective structure 50 and the end of the first back plate 21a close to the bending area 10B are overlapped.

[0048] In the embodiment of the present application, the protection structure 50 is located between the first back plate 21a and the second back plate 21b, and at least part of the orthographic projection of the protection structure 50 on the first back plate 21a is located on one end of the first back plate 21a close to the bending area 10B. In one embodiment, the protective structure 50 has a large Young's modulus, and the protective structure 50 is not easily deformed. The protective structure 50 can prevent the film layer of the display panel at the lower edge of the functional film layer 13 (the edge of the functional film layer 13 close to the bending area 10B) from being greatly deformed, thereby improving or avoiding the problem of damage such as breakage or cracking of the film layer of the display panel at the lower edge of the functional film layer 13 (the edge of the functional film layer 13 close to the bending area 10B); in another embodiment, the protective structure 50 has a large elasticity, which can play a good buffering role, reduce the stress on the film layer of the display panel at the lower edge of the functional film layer, and the external force such as impact is not easy to directly act on the film layer of the display panel at the lower edge of the functional film layer 13 (the edge of the functional film layer 13 close to the bending area 10B), thereby avoiding the lower edge of the functional film layer 13 (the edge of the functional film layer 13 close to the bending area 10B). 3 near the edge of the bending zone 10B) of the display panel film layer is broken or cracked; in another embodiment, the protective structure 50 has at least two parts or at least two materials, so that a part of the protective structure 50 has a larger Young's modulus, so that a part of the protective structure 50 has a larger elasticity and buffering effect. When the protective structure 50 can prevent the display panel film layer at the lower edge of the functional film layer 13 (the edge of the functional film layer 13 near the bending zone 10B) from being greatly deformed, it can also play a good buffering role. External forces such as impact are not easy to directly act on the display panel film layer at the lower edge of the functional film layer 13 (the edge of the functional film layer 13 near the bending zone 10B), thereby preventing the display panel film layer at the lower edge of the functional film layer 13 (the edge of the functional film layer 13 near the bending zone 10B) from being broken or cracked. Thus, the preparation yield is finally improved, and the service life is improved.

[0049] In some embodiments, Figures 1 to 7 As shown, the display module 200 further includes a first supporting structure 31 and a first space portion 101. The first supporting structure 31 is located between the first back plate 21a and the second back plate 21b; the first space portion 101 is located between the first back plate 21a, the second back plate 21b, the first supporting structure 31 and the bending area 10B, and the protection structure 50 is filled in the first space portion 101.

[0050] For example, the bending area 10B is bent to form a first space portion 101 , and the bending area 10B, the first back plate 21 a , the second back plate 21 b and the first supporting structure 31 enclose the first space portion 101 .

[0051] For example, compared to Figure 2, in order to more clearly illustrate the first space portion 101, Figure 1 The protection structure 50 is not shown.

[0052] For example, the material of the first support structure 31 may include composite foam (SCF).

[0053] In some embodiments, Figures 1 to 7 As shown, the orthographic projection of the first supporting structure 31 on the plane where the first back plate 21a is located is close to the edge of the bending zone 10B and is located within the range of the first back plate 21a; the first space portion 101 includes a first sub-space portion 101a and a second sub-space portion 101b, and the first sub-space portion 101a is located between the first back plate 21a, the second back plate 21b and the bending zone 10B; the second sub-space portion 101b is located between the first supporting structure 31 and the first sub-space portion 101a, and between the first back plate 21a and the second back plate 21b.

[0054] For example, the edge of the first support structure 31's orthographic projection on the plane of the first back plate 21a close to the bending zone 10B is located within the range of the first back plate 21a, that is, the edge of the first support structure 31 close to the bending zone 10B is retracted relative to the edge of the first back plate 21a close to the bending zone 10B to form a second subspace portion 101b.

[0055] For example, the formation of the second sub-space portion 101 b provides a partial space for disposing the protection structure 50 .

[0056] In some embodiments, Figures 1 to 7 As shown, the protection structure 50 includes a first sub-protection structure 50a and a second sub-protection structure 50b. The first sub-protection structure 50a is located in the first sub-space portion 101a, and the second sub-protection structure 50b is located in the second sub-space portion 101b.

[0057] For example, in some embodiments, when the display module 200 falls, the first sub-protective structure 50a mainly serves to prevent excessive deformation of the bending zone 10B, thereby preventing the film layer of the display panel at the lower edge of the functional film layer 13 (the edge of the functional film layer 13 close to the bending zone 10B) from undergoing large deformation, thereby improving or avoiding the problem of damage such as breakage or cracking of the film layer of the display panel at the lower edge of the functional film layer 13 (the edge of the functional film layer 13 close to the bending zone 10B).

[0058] For example, in some embodiments, when the display module 200 falls, the second sub-protection structure 50b can play a good buffering role, reducing the stress on the film layer of the display panel at the lower edge of the functional film layer, and the external force such as impact is not easy to directly act on the film layer of the display panel at the lower edge of the functional film layer 13 (the edge of the functional film layer 13 close to the bending area 10B), thereby avoiding the film layer of the display panel at the lower edge of the functional film layer 13 (the edge of the functional film layer 13 close to the bending area 10B) from being broken or cracked.

[0059] For example, in some embodiments, the first sub-protection structure 50a and the second sub-protection structure 50b both play a role in preventing excessive deformation and buffering external impact force.

[0060] In some embodiments, Figures 1 to 7 As shown, in the first protective sub-structure 50a and the second protective sub-structure 50b, at least the material of the second protective sub-structure 50b includes an elastic organic material.

[0061] For example, at least the material of the second protective substructure 50 b includes an elastic organic material, so that the second protective substructure 50 b can play a good buffering role.

[0062] For example, in some embodiments, the materials of the first sub-protective structure 50a and the second sub-protective structure 50b both include elastic organic materials, so that the first sub-protective structure 50a and the second sub-protective structure 50b can play a good buffering role.

[0063] In some embodiments, Figure 2 As shown, the Young's modulus of the first protective sub-structure 50a is greater than the Young's modulus of the second protective sub-structure 50b.

[0064] For example, the Young's modulus of the first sub-protective structure 50a is larger, and the first sub-protective structure 50a has a strong ability to resist deformation. The first sub-protective structure 50a mainly serves to prevent the bending zone 10B from being excessively deformed, thereby avoiding large deformation of the film layer of the display panel at the lower edge of the functional film layer 13 (the edge of the functional film layer 13 close to the bending zone 10B).

[0065] For example, the Young's modulus of the second sub-protective structure 50b is smaller. When the display module 200 falls, the second sub-protective structure 50b can play a good buffering role. External forces such as impact are not easy to directly act on the film layer of the display panel at the lower edge of the functional film layer 13 (the edge of the functional film layer 13 close to the bending area 10B), thereby avoiding damage such as breakage or cracks to the film layer of the display panel at the lower edge of the functional film layer 13 (the edge of the functional film layer 13 close to the bending area 10B).

[0066] For example, the material of the first sub-protection structure 50 a may include glue, resin, rubber, etc.

[0067] For example, the material of the second sub-protection structure 50 b may include glue, resin, rubber, etc.

[0068] For example, the curing rate of the material of the first sub-protective structure 50a may be greater than the curing rate of the material of the second sub-protective structure 50b, so that the Young's modulus of the first sub-protective structure 50a is greater than that of the second sub-protective structure 50b.

[0069] For example, the material of the first sub-protective structure 50 a and the material of the second sub-protective structure 50 b may be different, so that the Young's modulus of the first sub-protective structure 50 a is greater than the Young's modulus of the second sub-protective structure 50 b .

[0070] In some embodiments, Figure 2 As shown, the ratio of the Young's modulus of the first protective sub-structure 50a to the Young's modulus of the second protective sub-structure 50b is greater than or equal to 500.

[0071] For example, the ratio of the Young's modulus of the first protective substructure 50a to the Young's modulus of the second protective substructure 50b is greater than or equal to any one of 500, 600, 700, 800, 900, 1000, 1100 and 1200.

[0072] In some embodiments, Figure 2 As shown, the Young's modulus of the first sub-protection structure 50a is 1500 MPa to 2000 MPa; and the Young's modulus of the second sub-protection structure 50b is 1 MPa to 2 MPa.

[0073] For example, through the appropriate setting of the Young's modulus of the first sub-protective structure 50a and the Young's modulus of the second sub-protective structure 50b, when the display module 200 falls and is impacted by external force, the first sub-protective structure 50a can effectively prevent the bending zone 10B from being excessively deformed, and avoid the film layer of the display panel at the lower edge of the functional film layer 13 (the edge of the functional film layer 13 close to the bending zone 10B) from being greatly deformed; the second sub-protective structure 50b can play a good buffering role, and external forces such as impacts are not easy to directly act on the film layer of the display panel at the lower edge of the functional film layer 13 (the edge of the functional film layer 13 close to the bending zone 10B).

[0074] In some embodiments, Figures 3 to 7 As shown, in the first sub-protection structure 50 a and the second sub-protection structure 50 b , at least the second sub-protection structure 50 includes a plurality of cavities 501 .

[0075] For example, at least the second sub-protective structure 50b includes multiple holes 501, which can enhance the elasticity and buffering effect of the second sub-protective structure 50b, and external forces such as impact are less likely to directly act on the lower edge of the functional film layer 13 (the edge of the functional film layer 13 close to the bending area 10B).

[0076] For example, in some embodiments, of the first sub-protective structure 50a and the second sub-protective structure 50b, only the second sub-protective structure 50b includes a plurality of cavities 501 to enhance the elastic buffering effect of the second sub-protective structure 50b.

[0077] For example, in some embodiments, the first sub-protective structure 50a and the second sub-protective structure 50b both include a plurality of holes 501, so that the first sub-protective structure 50a simultaneously prevents the bending zone 10B from being excessively deformed, and avoids large deformation of the film layer of the display panel at the lower edge of the functional film layer 13 (the edge of the functional film layer 13 close to the bending zone 10B), and the second sub-protective structure 50b can play a certain buffering role, so that external forces such as impact are not easily directly applied to the film layer of the display panel at the lower edge of the functional film layer 13 (the edge of the functional film layer 13 close to the bending zone 10B).

[0078] In some embodiments, Figures 3 to 7 As shown, the cavity 501 penetrates the protection structure 50 in a direction parallel to the bending axis of the bending zone 10B.

[0079] For example, the bending axis of the bending zone 10B can be perpendicular to the direction of the paper surface or the desktop, and the cavity 501 runs through the protective structure 50. The cavity 501 can be manufactured by a process such as mold injection molding, thereby simplifying the production process.

[0080] In some embodiments, Figure 3 , Figure 6 and Figure 7 As shown, the first sub-protective structure 50a and the second sub-protective structure 50b are made of the same material, and the first sub-protective structure 50a and the second sub-protective structure 50b are an integrally formed structure.

[0081] For example, in some other embodiments, Figure 4 and Figure 5 As shown, the materials of the first protective substructure 50a and the second protective substructure 50b are different, for example, such that the Young's modulus of the first protective substructure 50a is greater than that of the second protective substructure 50b.

[0082] In some embodiments, Figures 5 to 7As shown, the first sub-protective structure 50a and the second sub-protective structure 50b both include a plurality of cavities 501. On a plane perpendicular to the bending axis of the bending zone 10B, the area ratio of the cavities 501 per unit area of ​​the second sub-protective structure 50b is greater than the area ratio of the cavities 501 per unit area of ​​the first sub-protective structure 50a.

[0083] For example, on a plane perpendicular to the bending axis of the bending zone 10B (for example, on a plane parallel to a desktop or paper), the area ratio of the holes 501 per unit area of ​​the second sub-protective structure 50b is greater than the area ratio of the holes 501 per unit area of ​​the first sub-protective structure 50a, that is, the number of holes 501 per unit area of ​​the second sub-protective structure 50b is greater or / and the size is larger, so that the elasticity and buffering effect of the second sub-protective structure 50b are stronger than those of the first sub-protective structure 50a. On the one hand, the second sub-protective structure 50b can play a good buffering role, and the external force such as impact is not easy to directly act on the film layer of the display panel at the lower edge of the functional film layer 13 (the edge of the functional film layer 13 close to the bending zone 10B). On the other hand, the first sub-protective structure 50a can well prevent the bending zone 10B from being excessively deformed, and avoid the film layer of the display panel at the lower edge of the functional film layer 13 (the edge of the functional film layer 13 close to the bending zone 10B) from being greatly deformed. Thirdly, the first sub-protection structure 50a also has a certain elasticity or deformation ability, and can also play a certain buffering role.

[0084] It should be noted that Figure 3 As shown, the first protective sub-structure 50 a and the second protective sub-structure 50 b are made of the same material, and only the second protective sub-structure 50 b includes a plurality of cavities 501 .

[0085] It should be noted that Figure 4 It is illustrated that the first protective sub-structure 50 a and the second protective sub-structure 50 b are made of different materials, and only the second protective sub-structure 50 b includes a plurality of cavities 501 .

[0086] It should be noted that Figure 5 It is illustrated that the first sub-protective structure 50 a and the second sub-protective structure 50 b are made of different materials, and both the first sub-protective structure 50 a and the second sub-protective structure 50 b include a plurality of cavities 501 .

[0087] It should be noted that Figure 6 It is illustrated that the first sub-protective structure 50 a and the second sub-protective structure 50 b are made of the same material, and both the first sub-protective structure 50 a and the second sub-protective structure 50 b include a plurality of cavities 501 .

[0088] It should be noted that Figure 7It is shown that the first sub-protection structure 50a and the second sub-protection structure 50b both include a plurality of cavities 501 , and the area ratio of the cavities 501 per unit area of ​​the second sub-protection structure 50b is greater than the area ratio of the cavities 501 per unit area of ​​the first sub-protection structure 50a .

[0089] See also Figure 8 and Fig. 9 .

[0090] In some embodiments, Figure 8 and Fig. 9 As shown, the display module 200 further includes a second supporting structure 41, a second space portion 102 and a buffer structure 60. The second supporting structure 41 is located on a side of the protection structure 50 away from the bending area 10B, or between the protection structure 50 and the first back plate 21a; the second space portion 102 is located between the first back plate 21a, the second back plate 21b, the protection structure 50 and the bending area 10B; the buffer structure 60 is located in the second space portion 102; wherein the Young's modulus of the protection structure 50 is greater than that of the second supporting structure 41.

[0091] For example, Figure 8 As shown, the second support structure 41 is located on a side of the protection structure 50 away from the bending area 10B. The second support structure 41 can be disposed between the first back plate 21a and the second back plate 21b by means of double-sided tape or the like.

[0092] For example, Fig. 9 As shown, the second supporting structure 41 is located between the protective structure 50 and the first back plate 21 a . The second supporting structure 41 can be disposed between the protective structure 50 and the first back plate 21 a by using double-sided adhesive tape or the like.

[0093] For example, the Young's modulus of the protective structure 50 is greater than that of the second supporting structure 41, and the protective structure 50 has a larger Young's modulus. The protective structure 50 has a strong rigid support function, which can prevent the film layer of the display panel at the lower edge of the functional film layer 13 of the display panel 10 (the edge of the functional film layer 13 close to the bending area 10B) from being greatly deformed, thereby improving or avoiding the problem of causing the film layer of the display panel at the lower edge of the functional film layer 13 (the edge of the functional film layer 13 close to the bending area 10B) to be broken or cracked. The buffer structure 60 can play a buffering role, and the external force such as impact is not easy to directly act on the film layer of the display panel at the lower edge of the functional film layer 13 (the edge of the functional film layer 13 close to the bending area 10B), thereby avoiding the film layer of the display panel at the lower edge of the functional film layer 13 (the edge of the functional film layer 13 close to the bending area 10B) from being broken or cracked. Through the synergistic effect of the protection structure 50 and the buffer structure 60 , damage such as breakage or cracking of the film layer of the display panel at the lower edge of the functional film layer 13 (the edge of the functional film layer 13 close to the bending area 10B) can be well improved or avoided.

[0094] In some embodiments, Figure 8 and Fig. 9 As shown, the material of the second supporting structure 41 includes composite foam; or / and, the material of the protective structure 50 includes metal or alloy material; or / and, the buffer structure 60 includes elastic organic material.

[0095] For example, the material of the second support structure 41 includes composite foam (SCF). Fig. 9 In the example, the second support structure 41 can also play a buffering role, and external forces such as impact are not easy to directly act on the film layer of the display panel at the lower edge of the functional film layer 13 (the edge of the functional film layer 13 close to the bending area 10B), thereby avoiding damage such as breakage or cracks to the film layer of the display panel at the lower edge of the functional film layer 13 (the edge of the functional film layer 13 close to the bending area 10B).

[0096] For example, the material of the protection structure 50 includes metal or alloy material, which can make the protection structure 50 have a larger Young's modulus, and the protection structure 50 is not easily deformed when subjected to external force.

[0097] The material of the buffer structure 60 may include glue, resin, rubber, etc.

[0098] It should be noted that Figure 8 Example Compared with the prior art, there is no protection structure 50 in the prior art. After simulation, it is found that the stress at the lower edge of the functional film layer 13 of the prior art is 166.1 MPa; Figure 8In the example, simulation shows that the stress of the film layer of the display panel at the lower edge of the functional film layer 13 is 129.1 MPa, indicating that after the improvement of the present application, the stress concentration of the film layer of the display panel at the lower edge of the functional film layer 13 has been significantly improved.

[0099] In some embodiments, Figure 8 and Fig. 9 As shown, in a direction perpendicular to the plane where the display area 10A is located, the thickness of the protection structure 50 is greater than the thickness of the second supporting structure 41 .

[0100] For example, the greater thickness of the protective structure 50 can make the protective structure 50 have a larger Young's modulus, and the protective structure 50 is not easily deformed when subjected to external force.

[0101] In some embodiments, Figure 8 As shown, the second support structure 41 is located on the side of the protection structure 50 away from the bending zone 10B; the positive projection of the protection structure 50 on the first back plate 21a is close to the edge of the bending zone 10B, overlapping with the edge of the first back plate 21a close to the bending zone 10B.

[0102] For example, Figure 8 As shown, the edge of the protective structure 50 near the bending area 10B is flush with the edge of the first backplane 21a near the bending area 10B. On the one hand, the bending starting point of the bending area 10B is the edge of the first backplane 21a near the bending area 10B, which can prevent the first backplane 21a from being deformed when subjected to external force. On the other hand, the orthographic projection of the functional film layer 13 on the plane where the first backplane 21a is located near the edge of the bending area 10B is located within the range of the first backplane 21a, so that the protective structure 50 can protect the film layer of the display panel at the lower edge of the functional film layer 13.

[0103] In some embodiments, Fig. 9 As shown, the second supporting structure 41 is located between the protective structure 50 and the first back plate 21a; the orthographic projection of the protective structure 50 on the plane where the first back plate 21a is located is close to the edge of the bending zone 10B, and overlaps with the edge of the first back plate 21a close to the bending zone 10B; the orthographic projection of the second supporting structure 41 on the plane where the first back plate 21a is located is close to the edge of the bending zone 10B, and overlaps with the edge of the first back plate 21a close to the bending zone 10B.

[0104] For example, Fig. 9As shown, the edge of the second support structure 41 near the bending zone 10B is flush with the edge of the first back plate 21a near the bending zone 10B; the edge of the protective structure 50 near the bending zone 10B is flush with the edge of the first back plate 21a near the bending zone 10B. On the one hand, the bending starting point of the bending zone 10B is the edge of the first back plate 21a near the bending zone 10B, which can prevent the first back plate 21a from deforming when subjected to external force. On the other hand, the edge of the orthographic projection of the functional film layer 13 on the plane of the first back plate 21a near the bending zone 10B can be located within the range of the first back plate 21a, so that the protective structure 50 can protect the film layer of the display panel at the lower edge of the functional film layer 13.

[0105] It should be noted that the composite foam is also called a super clean foam layer (SCF). The first back plate 21a and the second back plate 21b can be made of the same material, both belonging to the back plate layer (BP).

[0106] See also Fig.10 , Fig.10 A schematic diagram of a display device provided in an embodiment of the present application.

[0107] On the second aspect, based on the same application concept, the present application also provides a display device 300, the display device 300 includes any one of the display modules 200 described above, or the display device 300 includes a display module 200 that combines any several of the features described above.

[0108] For example, the display device 300 also has the beneficial effects of the display module 200 in the above embodiment. The similarities can be understood by referring to the above explanation of the display module 200, which will not be described in detail below.

[0109] For example, the display device 300 provided in the embodiment of the present application can be Fig.10 The mobile phone shown can also be any electronic product with a display function, including but not limited to the following categories: televisions, laptops, desktop displays, tablet computers, digital cameras, smart bracelets, smart glasses, car displays, industrial control equipment, medical display screens, touch interactive terminals, etc. The embodiments of the present application do not specifically limit this.

[0110] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0111] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

Claims

1. A display module, characterized in that: include: The display panel comprises a display area and a bending area located at one side of the display area, and a binding area located at a side of the bending area away from the display area, wherein the binding area is bent toward a side away from a light emitting surface of the display module; A first back plate, located at a side of the display area away from the light emitting surface; A second back plate, located at a side of the binding area facing the light emitting surface and arranged opposite to the first back plate; The protection structure is located between the first back plate and the second back plate, and at least a partial projection of the protection structure on the first back plate is located on an end of the first back plate close to the bending area.

2. The display module according to claim 1, characterized in that: Also includes: A first supporting structure, located between the first back plate and the second back plate; The first space portion is located between the first back plate, the second back plate, the first supporting structure and the bending area, and the protection structure fills the first space portion.

3. The display module according to claim 2, characterized in that: The orthographic projection of the first supporting structure on the plane where the first back plate is located is close to the edge of the bending area and is located within the range of the first back plate; The first space portion includes a first sub-space portion and a second sub-space portion, and the first sub-space portion is located between the first back plate, the second back plate and the bending area; The second sub-space portion is located between the first supporting structure and the first sub-space portion, and between the first back plate and the second back plate.

4. The display module according to claim 3, characterized in that: The protection structure includes a first sub-protection structure and a second sub-protection structure. The first sub-protection structure is located in the first sub-space portion, and the second sub-protection structure is located in the second sub-space portion.

5. The display module according to claim 4, characterized in that: Of the first protective sub-structure and the second protective sub-structure, at least the second protective sub-structure is made of an elastic organic material.

6. The display module according to claim 4, characterized in that: The Young's modulus of the first protective sub-structure is greater than the Young's modulus of the second protective sub-structure.

7. The display module according to claim 6, characterized in that: A ratio of a Young's modulus of the first protective sub-structure to a Young's modulus of the second protective sub-structure is greater than or equal to 500.

8. The display module according to claim 7, characterized in that: The Young's modulus of the first sub-protection structure is 1500 MPa to 2000 MPa; The Young's modulus of the second sub-protection structure is 1 MPa to 2 MPa.

9. The display module according to claim 4, characterized in that: Of the first sub-protection structure and the second sub-protection structure, at least the second sub-protection structure includes a plurality of cavities.

10. The display module according to claim 9, characterized in that: The cavity penetrates the protection structure in a direction parallel to the bending axis of the bending zone.

11. The display module according to claim 9, characterized in that: The first sub-protection structure and the second sub-protection structure are made of the same material, and the first sub-protection structure and the second sub-protection structure are an integrally formed structure.

12. The display module according to claim 9, characterized in that: The first sub-protective structure and the second sub-protective structure both include a plurality of cavities, and on a plane perpendicular to the bending axis of the bending zone, the area ratio of the cavities per unit area of ​​the second sub-protective structure is greater than the area ratio of the cavities per unit area of ​​the first sub-protective structure.

13. The display module according to claim 1, characterized in that: Also includes: A second supporting structure is located on a side of the protection structure away from the bending area, or between the protection structure and the first back plate; A second space portion, located between the first back plate, the second back plate, the protection structure and the bending area; A buffer structure, located in the second space portion; Wherein, the Young's modulus of the protection structure is greater than the Young's modulus of the second support structure.

14. The display module according to claim 13, characterized in that: The material of the second supporting structure includes composite foam; or / and, The material of the protection structure includes metal or alloy material; or / and, The cushioning structure includes a resilient organic material.

15. The display module according to claim 13, characterized in that: In a direction perpendicular to the plane where the display area is located, the thickness of the protection structure is greater than the thickness of the second supporting structure.

16. The display module according to claim 13, characterized in that: The second supporting structure is located on a side of the protection structure away from the bending area; An edge of the orthographic projection of the protection structure on the first back plate close to the bending area overlaps with an edge of the first back plate close to the bending area.

17. The display module according to claim 13, characterized in that: The second supporting structure is located between the protective structure and the first back plate; The orthographic projection of the protection structure on the plane where the first back plate is located is close to the edge of the bending area and overlaps with the edge of the first back plate close to the bending area; The orthographic projection of the second supporting structure on the plane where the first back plate is located is close to the edge of the bending area and overlaps with the edge of the first back plate close to the bending area.

18. A display device, characterized in that: Comprising the display panel as claimed in any one of claims 1 to 17.

Images