Display module and display device

Abstract

A display module (200) and a display device (300). The display module (200) comprises: a display panel (10), comprising a display area (10A), a bending area (10B) located on one side of the display area (10A), and a binding area (10C) located on the side of the bending area (10B) away from the display area (10A), wherein the binding area (10C) is bent toward the side away from a light-emitting surface of the display module (200); a first back plate (21a), located on the side of the display area (10A) away from the light-emitting surface; a second back plate (21b), located on the side of the binding area (10C) toward the light-emitting surface and arranged opposite to the first back plate (21a); and a protective structure (50), located between the first back plate (21a) and the second back plate (21b), wherein at least part of the orthographic projection of the protective structure (50) on the first back plate (21a) is located at the end of the first back plate (21a) close to the bending area (10B). The display module (200) can solve the problems of reduced production yield and shortened service life caused by damage to the lower edge of a functional film (13) when the display module (200) is impacted by external force.

Description

Display module and display device

[0001] Cross-references to related applications

[0002] This application claims priority to Chinese Patent Application No. 202411629751.X, entitled “Display Module and Display Device”, filed on November 14, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application relates to the field of display technology, and in particular to a display module and display device. Background Technology

[0004] Flexible display panels, due to their bendability, can achieve larger display areas and have become a key research focus in the display field.

[0005] Display devices assembled using flexible display panels typically include a functional film layer (such as a polarizer) 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 a drop or bending of components during manufacturing), 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

[0006] In a first aspect, embodiments of this application provide a display module, including:

[0007] The display panel includes a display area and a bending area located on one side of the display area, and a bonding area located on the side of the bending area away from the display area, the bonding area being bent toward the side away from the light-emitting surface of the display module;

[0008] The first back panel is located on the side of the display area away from the light-emitting surface;

[0009] The second backplate is located on the side of the bonding area facing the light-emitting surface and is positioned opposite to the first backplate;

[0010] A protective structure is located between the first back plate and the second back plate, with at least a portion of the protective structure projected onto the first back plate and located at one end of the first back plate near the bending area.

[0011] Secondly, based on the same inventive concept, embodiments of this application also provide a display device, which includes the display module provided in the first aspect.

[0012] In this embodiment, a protective structure is provided in the display module. The protective structure is located between the first back plate and the second back plate, and at least a portion of the protective structure is projected onto the first back plate, located at the end of the first back plate near the bending area. In one embodiment, the protective structure has a large Young's modulus and is not easily deformable. The protective structure can prevent large deformation of the display panel film at the lower edge of the functional film layer (the edge of the functional film layer near the bending area), thereby improving or avoiding the problem of damage such as breakage or cracks in the display panel film at the lower edge of the functional film layer (the edge of the functional film layer near the bending area). In another embodiment, the protective structure has high elasticity and can play a good buffering role. External forces such as impacts are not easily directly applied to the film layer of the display panel at the lower edge of the functional film layer (the edge of the functional film layer near the bending area), thereby preventing damage such as breakage or cracks in the lower edge of the functional film layer (the edge of the functional film layer near the bending area). In another embodiment, the protective structure has at least two parts or at least two materials, such that a part of the protective structure has a large Young's modulus, and thus a part of the protective structure has greater elasticity and buffering effect. While the protective structure can prevent large deformation of the display panel film at the lower edge of the functional film (the edge of the functional film near the bending area), it can also play a good buffering role. External forces such as impacts are not easily directly applied to the display panel film at the lower edge of the functional film (the edge of the functional film near the bending area), thereby preventing damage such as breakage or cracking of the display panel film at the lower edge of the functional film (the edge of the functional film near the bending area). Attached Figure Description

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

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

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

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

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

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

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

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

[0021] Figure 9 is a schematic diagram of a ninth cross-sectional structure of a display module provided in an embodiment of this application.

[0022] Figure 10 is a schematic diagram of a display device provided in an embodiment of this application. Detailed Implementation

[0023] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings. This application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this application.

[0024] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0025] 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 may be directly on the other element or there may be intermediate elements present. Furthermore, when a layer is referred to as being "below" another layer, it may be directly below it or there may be one or more intermediate elements present. It is also understood that when a layer is referred to as being "between" two layers, it may be the only layer between the two layers, or there may be one or more intermediate elements present.

[0026] When using the terms “including,” “having,” and “comprising” as described herein, another component may be added unless explicitly qualifying terms such as “only,” “consisting of,” etc. are used. Unless otherwise stated, singular terms may include plural forms and should not be construed as having a quantity of one.

[0027] 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 used only to distinguish one element from another. For example, without departing from the scope of this application, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element.

[0028] It should also be understood that, in interpreting an element, although not explicitly described, the element is interpreted as including a range of error, which should be within the acceptable deviation range of a particular value as determined by a person skilled in the art. For example, "approximately," "about," or "substantially" can mean within one or more standard deviations, without limitation herein.

[0029] Furthermore, in the instruction manual, the phrase "planar distribution diagram" refers to the diagram when the target part is viewed from above, and the phrase "cross-sectional diagram" refers to the diagram when the target part is viewed from the side as a cross-section taken by vertically cutting the target part.

[0030] Various modifications and variations can be made to this application without departing from its spirit or scope, which will be apparent to those skilled in the art. Therefore, this application is intended to cover modifications and variations falling within the scope of the corresponding claims (the claimed technical solutions) and their equivalents. It should be noted that the embodiments provided in this application can be combined with each other without contradiction.

[0031] Furthermore, the accompanying drawings are not drawn to a 1:1 scale, and the relative dimensions of the components are shown in the drawings only as examples and not necessarily to actual scale.

[0032] In related technologies, when the display module is subjected to external impact (such as a drop or bending of the component during manufacturing), the film layer of the display panel at the lower edge of the functional film layer (such as the polarizer) is easily damaged (as shown by the dashed circle XQ1 in Figure 1, for example, the trace in the display panel is broken), which reduces the manufacturing yield and service life.

[0033] The inventors discovered that the above phenomenon occurs because: the display panel film layer at the lower edge of the functional film layer (the edge of the functional film layer near the bending area) is prone to extreme deformation, which leads to damage such as breakage or cracks in the display panel film layer at the lower edge of the functional film layer (the edge of the functional film layer near the bending area); or, the display panel film layer at the lower edge of the functional film layer (the edge of the functional film layer near the bending area) is prone to being subjected to large external forces, and the stress on the display panel film layer at the lower edge of the functional film layer is too great, while other film layers do not have sufficient elasticity, causing external forces such as impacts to act directly on the display panel film layer at the lower edge of the functional film layer (the edge of the functional film layer near the bending area), resulting in damage such as breakage or cracks in the display panel film layer at the lower edge of the functional film layer (the edge of the functional film layer near the bending area).

[0034] Based on the above-mentioned technical problems, the inventors discovered that a protective structure is set in the display module, the protective structure is located between the first back plate and the second back plate, and at least part of the protective structure is projected onto the first back plate, located at one end of the first back plate near the bending area.

[0035] In one embodiment, the protective structure has a large Young's modulus and is not easily deformable. The protective structure can prevent large deformation of the display panel film at the lower edge of the functional film layer (the edge of the functional film layer near the bending area), thereby improving or avoiding the problem of damage such as breakage or cracks in the display panel film at the lower edge of the functional film layer (the edge of the functional film layer near the bending area).

[0036] In another embodiment, the protective structure has greater elasticity, which can play a good buffering role. External forces such as impacts are not likely 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 near the bending area), thereby avoiding 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 near the bending area).

[0037] In another embodiment, the protective structure has at least two parts or at least two materials, such that a part of the protective structure has a large Young's modulus, and thus a part of the protective structure has greater elasticity and buffering effect. While the protective structure can prevent large deformation of the display panel film at the lower edge of the functional film layer (the edge of the functional film layer near the bending area), it can also play a good buffering role. External forces such as impacts are not easily directly applied to the display panel film at the lower edge of the functional film layer (the edge of the functional film layer near the bending area), thereby preventing damage such as breakage or cracks in the display panel film at the lower edge of the functional film layer (the edge of the functional film layer near the bending area).

[0038] The above is the core idea of ​​this application. The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

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

[0040] This application provides a display module 200, which includes a display panel 10, a first back plate 21a, a second back plate 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 bonding area 10C located on the side of the bending area 10B away from the display area 10A. The bonding area 10C is bent toward the side away from the light-emitting surface of the display module 200. The first back plate 21a is located on the side of the display area 10A away from the light-emitting surface. The second back plate 21b is located on the side of the bonding area 10C facing the light-emitting surface and is disposed opposite to the first back plate 21a. The protective structure 50 is located between the first back plate 21a and the second back plate 21b. At least a portion of the protective structure 50 is projected onto the first back plate 21a and is located on the end of the first back plate 21a near the bending area 10B.

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

[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 bezel. The binding area 10C can be electrically connected to the driver chip 40 or the circuit board.

[0043] For example, as illustrated in Figures 1 and 2, the display module 200 also includes a functional film layer 13 (such as a polarizer, insulating layer, touch film layer, etc.) attached to the side of the display functional 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 by an optically clear adhesive layer 14 (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, as shown in Figures 1 and 2, the side of the protective cover 15 away from the substrate 11 is the light-emitting surface of the display area 10A or 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 15 to the human eye.

[0045] For example, as shown in Figures 1 and 2, the first backplate 21a is attached to the side of the substrate 11 opposite to the display functional layer 12. The second backplate 21b is attached to the same side of the substrate 11 as the first backplate 21a, and the second backplate 21b is attached to the bonding area 10C.

[0046] For example, as shown in Figures 1 and 2, after the bending area 10B is bent, the display area 10A and the bonding area 10C are set opposite to each other or opposite to each other. The first back plate 21a is located on the side of the display area 10A away from the light-emitting surface; the second back plate 21b is located on the side of the bonding area 10C facing the light-emitting surface and is set opposite to the first back plate 21a.

[0047] For example, as shown in Figures 2 to 9, the protective structure 50 is located between the first back plate 21a and the second back plate 21b. At least a portion of the orthographic projection of the protective structure 50 onto the first back plate 21a is located at the end of the first back plate 21a near 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 of the first back plate 21a, the protective structure 50 overlaps with the end of the first back plate 21a near the bending area 10B.

[0048] In this embodiment of the application, the protective structure 50 is located between the first back plate 21a and the second back plate 21b. The protective structure 50 has at least a partial orthographic projection on the first back plate 21a, located at one end of the first back plate 21a near the bending area 10B.

[0049] In one embodiment, the protective structure 50 has a large Young's modulus and is not easily deformable. The protective structure 50 can prevent large deformation of the display panel film at the lower edge of the functional film layer 13 (the edge of the functional film layer 13 near the bending area 10B), thereby improving or avoiding the problem of damage such as breakage or cracks in the display panel film at the lower edge of the functional film layer 13 (the edge of the functional film layer 13 near the bending area 10B).

[0050] In another embodiment, the protective structure 50 has greater elasticity, which can play a good buffering role, reduce the stress on the display panel film at the lower edge of the functional film layer, and prevent external forces such as impacts from directly acting on the display panel film at the lower edge of the functional film layer 13 (the edge of the functional film layer 13 near the bending area 10B), thereby avoiding damage such as breakage or cracks in the display panel film at the lower edge of the functional film layer 13 (the edge of the functional film layer 13 near the bending area 10B).

[0051] In another embodiment, the protective structure 50 has at least two portions or at least two materials, such that a portion of the protective structure 50 has a large Young's modulus, giving it greater elasticity and cushioning effect. While the protective structure 50 can prevent significant deformation of the display panel film at the lower edge of the functional film layer 13 (the edge of the functional film layer 13 near the bending area 10B), it also provides good cushioning, preventing external forces such as impacts from directly affecting the display panel film at the lower edge of the functional film layer 13 (the edge of the functional film layer 13 near the bending area 10B). This avoids damage such as breakage or cracks in the display panel film at the lower edge of the functional film layer 13 (the edge of the functional film layer 13 near the bending area 10B). Ultimately, this improves the manufacturing yield and extends the service life.

[0052] In some embodiments, as shown in Figures 1 to 7, the display module 200 further includes a first support structure 31 and a first space portion 101. The first support 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 support structure 31, and the bending area 10B, and the protective structure 50 is filled in the first space portion 101.

[0053] For example, after the bending area 10B is bent, a first space portion 101 is formed. The bending area 10B, the first back plate 21a, the second back plate 21b and the first support structure 31 enclose the first space portion 101.

[0054] For example, compared to Figure 2, the protective structure 50 is not shown in Figure 1 in order to illustrate the first space portion 101 more clearly.

[0055] For example, the material of the first support structure 31 may include composite foam (SCF).

[0056] In some embodiments, as shown in Figures 1 to 7, the orthographic projection of the first support structure 31 on the plane of the first back plate 21a is close to the edge of the bending area 10B and is located within the range of the first back plate 21a; the first space portion 101 includes a first subspace portion 101a and a second subspace portion 101b, the first subspace portion 101a being located between the first back plate 21a and the second back plate 21b and the bending area 10B; the second subspace portion 101b being located between the first support structure 31 and the first subspace portion 101a, and also between the first back plate 21a and the second back plate 21b.

[0057] For example, the orthographic projection of the first support structure 31 onto the plane of the first back plate 21a is located near the edge of the bending area 10B within the range of the first back plate 21a. That is, the edge of the first support structure 31 near the bending area 10B is recessed relative to the edge of the first back plate 21a near the bending area 10B to form the second subspace portion 101b.

[0058] For example, the formation of the second subspace 101b provides a partial space for the installation of the protective structure 50.

[0059] In some embodiments, as shown in Figures 1 to 7, the protective structure 50 includes a first sub-protective structure 50a and a second sub-protective structure 50b, wherein the first sub-protective structure 50a is located within the first subspace portion 101a and the second sub-protective structure 50b is located within the second subspace portion 101b.

[0060] For example, in some embodiments, when the display module 200 is dropped, the first sub-protective structure 50a mainly serves to prevent excessive deformation of the bending area 10B, and avoid 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 near the bending area 10B), 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 13 (the edge of the functional film layer 13 near the bending area 10B).

[0061] For example, in some embodiments, when the display module 200 is dropped, the second sub-protective structure 50b can provide good cushioning, reducing the stress on the display panel film at the lower edge of the functional film layer. External forces such as impacts are less likely to directly act on the display panel film at the lower edge of the functional film layer 13 (the edge of the functional film layer 13 near the bending area 10B), thereby preventing damage such as breakage or cracks in the display panel film at the lower edge of the functional film layer 13 (the edge of the functional film layer 13 near the bending area 10B).

[0062] For example, in some implementations, both the first sub-protective structure 50a and the second sub-protective structure 50b serve to prevent excessive deformation and to buffer external impact forces.

[0063] In some embodiments, as shown in Figures 1 to 7, at least the material of the second sub-protective structure 50b includes an elastic organic material.

[0064] For example, at least the material of the second sub-protective structure 50b includes an elastic organic material, so that the second sub-protective structure 50b can provide good cushioning.

[0065] 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 cushioning role.

[0066] In some implementations, as shown in FIG2, the Young's modulus of the first sub-protective structure 50a is greater than that of the second sub-protective structure 50b.

[0067] For example, the first sub-protective structure 50a has a larger Young's modulus and stronger resistance to deformation. The first sub-protective structure 50a mainly serves to prevent excessive deformation of the bending area 10B and avoid large deformation of the display panel film at the lower edge of the functional film layer 13 (the edge of the functional film layer 13 near the bending area 10B).

[0068] For example, the second sub-protective structure 50b has a smaller Young's modulus. When the display module 200 is dropped, the second sub-protective structure 50b can play a good buffering role. External forces such as impacts are less likely 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 near the bending area 10B), thereby avoiding damage such as breakage or cracks in 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 near the bending area 10B).

[0069] For example, the material of the first sub-protective structure 50a may include adhesives, resins, rubber, etc.

[0070] For example, the material of the second sub-protective structure 50b may include adhesives, resins, rubber, etc.

[0071] For example, the curing rate of the material of the first sub-protective structure 50a can 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 the Young's modulus of the second sub-protective structure 50b.

[0072] For example, the material of the first sub-protective structure 50a may be different from that of the second sub-protective structure 50b, such that the Young's modulus of the first sub-protective structure 50a is greater than that of the second sub-protective structure 50b.

[0073] In some embodiments, as shown in FIG2, the ratio of the Young's modulus of the first sub-protective structure 50a to the Young's modulus of the second sub-protective structure 50b is greater than or equal to 500.

[0074] For example, the ratio of the Young's modulus of the first sub-protective structure 50a to the Young's modulus of the second sub-protective structure 50b is greater than or equal to any one of the values ​​of 500, 600, 700, 800, 900, 1000, 1100 and 1200.

[0075] In some embodiments, as shown in FIG2, the Young's modulus of the first sub-protective structure 50a is 1500 MPa to 2000 MPa; and the Young's modulus of the second sub-protective structure 50b is 1 MPa to 2 MPa.

[0076] For example, by appropriately setting 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 is subjected to external impact such as a drop, the first sub-protective structure 50a can effectively prevent excessive deformation of the bending area 10B and avoid 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 near the bending area 10B); the second sub-protective structure 50b can play a good buffering role, and external forces such as impacts 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 near the bending area 10B).

[0077] In some embodiments, as shown in Figures 3 to 7, in the first sub-protective structure 50a and the second sub-protective structure 50b, at least the second sub-protective structure 50 includes a plurality of cavities 501.

[0078] For example, at least the second sub-protective structure 50b includes multiple voids 501, which can enhance the elasticity and buffering effect of the second sub-protective structure 50b, making it less likely that external forces such as impacts will act directly on the lower edge of the functional membrane layer 13 (the edge of the functional membrane layer 13 near the bending area 10B).

[0079] For example, in some embodiments, only the second sub-protective structure 50b includes multiple cavities 501 in the first sub-protective structure 50a and the second sub-protective structure 50b, in order to enhance the cushioning effect of the second sub-protective structure 50b.

[0080] For example, in some embodiments, both the first sub-protective structure 50a and the second sub-protective structure 50b include multiple holes 501, so that the first sub-protective structure 50a can simultaneously prevent excessive deformation of the bending area 10B and avoid large deformation of the display panel film at the lower edge of the functional film layer 13 (the edge of the functional film layer 13 near the bending area 10B). The second sub-protective structure 50b can play a certain buffering role, so that external forces such as impacts 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 near the bending area 10B).

[0081] In some embodiments, as shown in Figures 3 to 7, the cavity 501 penetrates the protective structure 50 in a direction parallel to the bending axis of the bending region 10B.

[0082] For example, the bending axis of the bending area 10B can be perpendicular to the direction of the paper or the table. The cavity 501 penetrates the protective structure 50. The cavity 501 can be manufactured by processes such as mold injection molding, thereby simplifying the production process.

[0083] In some embodiments, as shown in Figures 3, 6 and 7, 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 integrally formed structures.

[0084] For example, in some other embodiments, as shown in Figures 4 and 5, the materials of the first sub-protective structure 50a and the second sub-protective structure 50b are different, for example, such that the Young's modulus of the first sub-protective structure 50a is greater than that of the second sub-protective structure 50b.

[0085] In some embodiments, as shown in Figures 5 to 7, both the first sub-protective structure 50a and the second sub-protective structure 50b include a plurality of cavities 501. On a plane perpendicular to the bending axis of the bending region 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.

[0086] For example, on a plane perpendicular to the bending axis of the bending area 10B (e.g., on a plane parallel to the table or paper), the area ratio of the voids 501 per unit area of ​​the second sub-protective structure 50b is greater than that of the first sub-protective structure 50a. That is, the second sub-protective structure 50b has more voids 501 per unit area and / or larger sizes, making the elasticity and cushioning effect of the second sub-protective structure 50b stronger than that of the first sub-protective structure 50a.

[0087] Firstly, the second sub-protective structure 50b provides good cushioning, preventing external forces such as impacts from directly affecting the display panel film at the lower edge of the functional film layer 13 (the edge of the functional film layer 13 near the bending area 10B). Secondly, the first sub-protective structure 50a effectively prevents excessive deformation of the bending area 10B, avoiding significant deformation of the display panel film at the lower edge of the functional film layer 13 (the edge of the functional film layer 13 near the bending area 10B). Thirdly, the first sub-protective structure 50a also possesses a certain degree of elasticity or deformation capability, further contributing to cushioning.

[0088] It should be noted that, as shown in Figure 3, the first sub-protective structure 50a and the second sub-protective structure 50b are made of the same material, except that the second sub-protective structure 50b includes multiple cavities 501.

[0089] It should be noted that, as shown in Figure 4, the materials of the first sub-protective structure 50a and the second sub-protective structure 50b are different, and only the second sub-protective structure 50b includes multiple cavities 501.

[0090] It should be noted that, as shown in Figure 5, the materials of the first sub-protective structure 50a and the second sub-protective structure 50b are different, and both the first sub-protective structure 50a and the second sub-protective structure 50b include multiple cavities 501.

[0091] It should be noted that, as shown in Figure 6, the first sub-protective structure 50a and the second sub-protective structure 50b are made of the same material, and both the first sub-protective structure 50a and the second sub-protective structure 50b include multiple cavities 501.

[0092] It should be noted that, as shown in Figure 7, both the first sub-protective structure 50a and the second sub-protective structure 50b include multiple cavities 501. The area ratio of cavities 501 per unit area of ​​the second sub-protective structure 50b is greater than the area ratio of cavities 501 per unit area of ​​the first sub-protective structure 50a.

[0093] Please refer to Figures 8 and 9.

[0094] In some embodiments, as shown in Figures 8 and 9, the display module 200 further includes a second support structure 41, a second space portion 102, and a buffer structure 60. The second support structure 41 is located on the side of the protective structure 50 away from the bending area 10B, or between the protective 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, and the protective structure 50 and the bending area 10B; the buffer structure 60 is located within the second space portion 102; wherein the Young's modulus of the protective structure 50 is greater than the Young's modulus of the second support structure 41.

[0095] For example, as shown in Figure 8, the second support structure 41 is located on the side of the protective structure 50 away from the bending area 10B. The second support structure 41 can be set between the first back plate 21a and the second back plate 21b by means of double-sided tape or the like.

[0096] For example, as shown in Figure 9, the second support structure 41 is located between the protective structure 50 and the first back plate 21a. The second support structure 41 can be set between the protective structure 50 and the first back plate 21a by means of double-sided tape or the like.

[0097] For example, the Young's modulus of the protective structure 50 is greater than that of the second support structure 41. The protective structure 50 has a larger Young's modulus and a stronger rigid support function, which can prevent 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 near the bending area 10B). This can improve or avoid 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 13 (the edge of the functional film layer 13 near the bending area 10B).

[0098] The buffer structure 60 acts as a buffer, preventing external forces such as impacts from directly impacting 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 area 10B), thus avoiding damage such as breakage or cracks in 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 area 10B). Through the synergistic effect of the protective structure 50 and the buffer structure 60, damage such as breakage or cracks in 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 area 10B) can be effectively improved or avoided.

[0099] In some embodiments, as shown in Figures 8 and 9, the material of the second support structure 41 includes composite foam; and / or the material of the protective structure 50 includes metal or alloy materials; and / or the material of the cushioning structure 60 includes resilient organic materials.

[0100] For example, the material of the second support structure 41 includes composite foam (SCF). In the example of Figure 9, the second support structure 41 can also play a buffering role, so that external forces such as impacts 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 near the bending area 10B), thereby avoiding damage such as breakage or cracks in 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 near the bending area 10B).

[0101] For example, the material of the protective structure 50 includes metal or alloy materials, which can make the protective structure 50 have a large Young's modulus and the protective structure 50 is not easily deformed when subjected to external forces.

[0102] The material of the cushioning structure 60 may include adhesives, resins, rubber, etc.

[0103] It should be noted that, compared with the prior art, the example in Figure 8 does not have a protective structure 50. Simulation results show that the stress at the lower edge of the functional film layer 13 in the prior art is 166.1 MPa; while in the example in Figure 8, simulation results show that the stress of the display panel film layer at the lower edge of the functional film layer 13 is 129.1 MPa. This indicates that the stress concentration of the display panel film layer at the lower edge of the functional film layer 13 has been significantly improved by the improvements of this application.

[0104] In some embodiments, as shown in Figures 8 and 9, the thickness of the protective structure 50 is greater than the thickness of the second support structure 41 in the direction perpendicular to the plane of the display area 10A.

[0105] For example, a thicker protective structure 50 can give the protective structure 50 a larger Young's modulus, making the protective structure 50 less prone to deformation when subjected to external forces.

[0106] In some embodiments, as shown in FIG8, the second support structure 41 is located on the side of the protective structure 50 away from the bending area 10B; the orthographic projection of the protective structure 50 on the first back plate 21a is close to the edge of the bending area 10B and overlaps with the edge of the first back plate 21a near the bending area 10B.

[0107] For example, as shown in Figure 8, the edge of the protective structure 50 near the bending area 10B is flush with the edge of the first back plate 21a near the bending area 10B. On one hand, the bending starting point of the bending area 10B is the edge of the first back plate 21a near the bending area 10B, which can prevent deformation of the first back plate 21a under external force. On the other hand, this ensures that the orthographic projection of the functional film layer 13 onto the plane of the first back plate 21a near the edge of the bending area 10B is within the range of the first back plate 21a, thereby allowing the protective structure 50 to protect the film layer of the display panel at the lower edge of the functional film layer 13.

[0108] In some embodiments, as shown in FIG9, the second support 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 area 10B, and overlaps with the edge of the first back plate 21a near the bending area 10B; the orthographic projection of the second support structure 41 on the plane where the first back plate 21a is located is close to the edge of the bending area 10B, and overlaps with the edge of the first back plate 21a near the bending area 10B.

[0109] For example, as shown in Figure 9, the edge of the second support structure 41 near the bending area 10B is flush with the edge of the first back plate 21a near the bending area 10B; the edge of the protective structure 50 near the bending area 10B is also flush with the edge of the first back plate 21a near the bending area 10B. On one hand, the bending starting point of the bending area 10B is the edge of the first back plate 21a near the bending area 10B, which can prevent the first back plate 21a from deforming under external force. On the other hand, this allows the orthographic projection of the functional film layer 13 onto the plane of the first back plate 21a to be within the range of the first back plate 21a near the edge of the bending area 10B, thereby enabling the protective structure 50 to protect the display panel film layer at the lower edge of the functional film layer 13.

[0110] It should be noted that the composite foam is also known as the Super Clean Foam (SCF). The first back panel 21a and the second back panel 21b can be made of the same material, both belonging to the back plane (BP).

[0111] Please refer to Figure 10, which is a schematic diagram of a display device provided in an embodiment of this application.

[0112] Secondly, based on the same concept, this application also provides a display device 300, which includes a display module 200 of any of the above features, or a display module 200 combining any of the above features.

[0113] For example, the display device 300 also has the beneficial effects of the display module 200 in the above embodiments. The similarities can be understood by referring to the explanation of the display module 200 above, and will not be repeated below.

[0114] For example, the display device 300 provided in this application embodiment can be the mobile phone shown in FIG10, or any electronic product with display function, including but not limited to the following categories: television, laptop, desktop monitor, tablet computer, digital camera, smart bracelet, smart glasses, vehicle display, industrial control equipment, medical display screen, touch interactive terminal, etc. This application embodiment does not make any special limitation in this regard.

[0115] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above 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.

[0116] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A display module, comprising: The display panel includes a display area and a bent area located on one side of the display area, and a bonding area located on the side of the bent area away from the display area, the bonding area being bent toward the side opposite to the light-emitting surface of the display module; The first backplate is located on the side of the display area opposite to the light-emitting surface; The second backplate is located on the side of the bonding area facing the light-emitting surface and is disposed opposite to the first backplate; A protective structure is located between the first back plate and the second back plate, and at least a portion of the protective structure is projected onto the first back plate, located at one end of the first back plate near the bending area.

2. The display module according to claim 1, further comprising: The first support structure is located between the first back plate and the second back plate; A first space is located between the first back plate, the second back plate, the first support structure, and the bending area, and the protective structure fills the first space.

3. The display module according to claim 2, wherein, The orthographic projection of the first support structure onto the plane of the first back plate is close to the edge of the bending area and is located within the range of the first back plate; The first space includes a first subspace and a second subspace, wherein the first subspace is located between the first back plate and the second back plate and the bending area; The second subspace is located between the first support structure and the first subspace, and between the first back plate and the second back plate.

4. The display module according to claim 3, wherein, The protective structure includes a first sub-protective structure and a second sub-protective structure, wherein the first sub-protective structure is located within the first sub-space portion and the second sub-protective structure is located within the second sub-space portion.

5. The display module according to claim 4, wherein, In the first sub-protective structure and the second sub-protective structure, at least the material of the second sub-protective structure includes an elastic organic material.

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

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

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

9. The display module according to claim 4, wherein, In the first sub-protective structure and the second sub-protective structure, at least the second sub-protective structure includes multiple cavities.

10. The display module according to claim 9, wherein, The cavity penetrates the protective structure in a direction parallel to the bending axis of the bending area.

11. The display module according to claim 9, wherein, The first sub-protective structure and the second sub-protective structure are made of the same material, and the first sub-protective structure and the second sub-protective structure are integrally formed.

12. The display module according to claim 9, wherein, Both the first sub-protective structure and the second sub-protective structure include multiple cavities. On a plane perpendicular to the bending axis of the bending area, the area ratio of cavities per unit area of ​​the second sub-protective structure is greater than the area ratio of cavities per unit area of ​​the first sub-protective structure.

13. The display module according to claim 1, further comprising: The second support structure is located on the side of the protective structure away from the bending area, or between the protective structure and the first back plate; The second space is located between the first back plate, the second back plate, the protective structure, and the bending area; A buffer structure is located within the second space. The Young's modulus of the protective structure is greater than that of the second support structure.

14. The display module according to claim 13, wherein, The material of the second support structure includes composite foam; and / or, The material of the protective structure includes metals or alloys; or / and, The buffer structure comprises a resilient organic material.

15. The display module according to claim 13, wherein, In a direction perpendicular to the plane where the display area is located, the thickness of the protective structure is greater than the thickness of the second support structure.

16. The display module according to claim 13, wherein, The second support structure is located on the side of the protective structure away from the bending area; The edge of the protective structure projected onto the first back plate near the bending area overlaps with the edge of the first back plate near the bending area.

17. The display module according to claim 13, wherein, The second support structure is located between the protective structure and the first back plate; The orthographic projection of the protective structure onto the plane of the first back plate is close to the edge of the bending area and overlaps with the edge of the first back plate near the bending area. The orthographic projection of the second support structure onto the plane of the first back plate is close to the edge of the bending area and overlaps with the edge of the first back plate near the bending area.

18. A display device, wherein, Includes the display panel as described in any one of claims 1 to 17.

Images