Display module, manufacturing method of display module, and support plate

Abstract

Embodiments of the present application provide a display module, a manufacturing method of the display module and a support plate. The display module comprises a display panel and a support plate arranged on one side of the display panel. The support plate comprises a bending portion and support portions arranged on both sides of the bending portion along the extension direction of the support plate. The support portions are fixedly connected to the display panel. The support plate comprises a bending state and a non-bending state. In the non-bending state, at least part of the bending portion abuts against the display panel. In the bending state, the bending portion is bent along the thickness direction of the display panel, and a gap exists between at least part of the bending portion and the display panel. In the non-bending state, at least part of the bending portion abuts against the display panel, and the bending portion supports the display panel. In the bending state, the bending portion is bent along the thickness direction of the display panel, and a gap exists between at least part of the bending portion and the display panel, so as to reduce the stress of the bending portion and the display panel in the bending state and reduce the problem of film layer peeling of the display module.

Description

Technical Field

[0001] This application relates to the field of display device technology, and in particular to a display module, a method for manufacturing the display module, and a support plate. Background Technology

[0002] In recent years, due to the advantages of OLED (Organic Light-Emitting Diode) display devices such as thinness, flexibility, and high contrast, in bendable display modules, the difference in bending stress between the film layers may lead to the problem of peeling between the film layers during long-term bending use. Summary of the Invention

[0003] This application provides a display module, a method for manufacturing the display module, and a support plate, aiming to solve the problem of film peeling in display modules.

[0004] An embodiment of the first aspect of this application provides a display module, including: a display panel and a support plate; the support plate is disposed on one side of the display panel, and the support plate includes a bent portion and support portions disposed on both sides of the bent portion along the extension direction of the support plate, the support portions being fixedly connected to the display panel; wherein, the support plate includes a bent state and a non-bent state, in the non-bent state, at least a portion of the bent portion abuts against the display panel; in the bent state, the bent portion is bent along the thickness direction of the display panel, and at least a portion of the bent portion has a gap with the display panel.

[0005] According to an embodiment of this application, the display panel includes a bending area and a flattened area connected to both sides of the bending area. The support is connected to the flattened area, and the bending part and the bending area are movably disposed relative to each other along a direction perpendicular to the extension direction.

[0006] According to an embodiment of this application, the bending portion includes a first film layer and a second film layer stacked along a direction perpendicular to the extension direction. The two ends of the first film layer and the second film layer along the extension direction are connected to the support portion, and the first film layer and the second film layer are movably disposed relative to each other along a direction perpendicular to the extension direction.

[0007] According to embodiments of this application, the materials of the first film layer and / or the second film layer include polyester materials.

[0008] According to the embodiments of this application, in the non-bending state, the spacing between the first film layer and the second film layer is equal; in the bending state, along the extension direction, the spacing between the first film layer and the second film layer gradually decreases from both ends to the middle.

[0009] According to the embodiments of this application, a first film layer is disposed on the side of the second film layer facing the display panel, a plurality of limiting grooves are provided on the side of the first film layer facing the second film layer, and a plurality of limiting protrusions are provided on the side of the second film layer facing the first film layer, and each limiting protrusion is movably disposed in each limiting groove.

[0010] According to an embodiment of this application, the limiting groove includes two inclined surfaces disposed opposite each other along the extending direction. The distance between the two inclined surfaces gradually increases along the direction close to the second film layer, and the limiting protrusion abuts between the two inclined surfaces.

[0011] According to the embodiments of this application, a plurality of limiting grooves and a plurality of limiting protrusions are arranged along the extension direction. In the non-bent state, the maximum distance between the two inclined surfaces of each limiting groove is equal. In the bent state, along the extension direction, the maximum distance between the inclined surfaces of each groove arranged sequentially from both ends to the middle increases sequentially, and the distance between each limiting groove arranged sequentially from both ends to the middle and the first film layer decreases sequentially.

[0012] According to an embodiment of this application, the limiting protrusion is a rectangular protrusion, which includes a top surface facing the first film layer and a side surface connected to the top surface. The top surface and the side surface are connected by an arc transition surface, and the arc transition surface abuts against the inclined surface.

[0013] According to the embodiments of this application, a plurality of tooth structures are provided on the side of the first film layer facing the second film layer. The cross section of the tooth structure along the extension direction is a triangular structure. Two adjacent tooth structures form a limiting groove. At least a portion of the triangular structure is disposed between two adjacent limiting protrusions.

[0014] According to the embodiments of this application, in the non-bent state, the length of the bent portion along the extension direction is a first length, and in the bent state, the length of the bent portion along the extension direction is a second length, the second length being greater than the first length.

[0015] An embodiment of the second aspect of this application also provides a method for manufacturing a display module, comprising:

[0016] The first membrane layer includes a first bent section and a first flattened section located on both sides of the first bent section, and a plurality of limiting grooves are formed in the first bent section.

[0017] The second membrane layer includes a second bent section and a second flattened section located on both sides of the second bent section, with multiple limiting protrusions formed in the second bent section.

[0018] The first and second flattened sections are respectively attached to the support part, and the limiting protrusions and limiting grooves are arranged opposite to each other, with each limiting protrusion set in each limiting groove.

[0019] The support and the first film layer are disposed on one side of the display panel, and the second film layer is located on the side of the first film layer opposite to the display panel, connecting the support and the display panel.

[0020] An embodiment of the third aspect of this application also provides a support plate, including a bent portion and support portions disposed on both sides of the bent portion along the extension direction of the support plate. The bent portion includes a first film layer and a second film layer stacked in a direction perpendicular to the extension direction. The two ends of the first film layer and the second film layer along the extension direction are connected to the support portions. The first film layer and the second film layer are movably disposed relative to each other in a direction perpendicular to the extension direction.

[0021] According to the embodiments of this application, the support plate includes a bent state and a non-bent state; in the non-bent state, the spacing between the first film layer and the second film layer is equal; in the bent state, along the extension direction, the spacing between the first film layer and the second film layer gradually decreases from both ends to the middle.

[0022] According to the embodiments of this application, a plurality of limiting grooves are provided on the side of the first film layer facing the second film layer, and a plurality of limiting protrusions are provided on the side of the second film layer facing the first film layer, and each limiting protrusion is movably disposed in each limiting groove.

[0023] According to the embodiments of this application, the limiting groove includes two inclined surfaces disposed opposite each other along the extension direction. The distance between the two inclined surfaces gradually increases along the direction close to the second film layer, and the limiting protrusion abuts between the two inclined surfaces. In the non-bent state, the maximum distance between the two inclined surfaces of each limiting groove is equal. In the bent state, the maximum distance between the two inclined surfaces of each groove arranged sequentially from both ends to the middle along the extension direction increases sequentially, and the distance between each limiting protrusion arranged sequentially from both ends to the middle and the first film layer decreases sequentially.

[0024] In the embodiments of this application, the support plate includes a bent portion and a supporting portion. The support plate has a bent state and a non-bent state due to the bendability of the bent portion. The support plate is disposed on one side of the display panel, and the supporting portion is fixedly connected to the display panel so that the display panel changes synchronously with the change of the support plate's state. When the support plate is in a bent state, the display panel is in a bent state; when the support plate is in a non-bent state, the display panel is in a non-bent state, thereby allowing the display module to have a planar state, a bent state, and a transitional state between the planar state and the bent state. In the non-bent state, at least a portion of the bent portion of the support plate abuts against the display panel, and the bent portion provides support for the display panel. When the support plate is in a bent state, the bent portion bends along the thickness direction of the display panel, and at least a portion of the bent portion has a gap with the display panel to reduce the stress on the bent portion and the display panel in the bent state, thereby reducing the problem of film peeling in the display module. Attached Figure Description

[0025] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings, wherein the same or similar reference numerals denote the same or similar features.

[0026] Figure 1 This is a schematic diagram of the structure of a display panel provided in an embodiment of this application;

[0027] Figure 2 This is a schematic diagram of another display panel structure provided in an embodiment of this application;

[0028] Figure 3 This is a schematic diagram of the structure of another display panel provided in the embodiments of this application;

[0029] Figure 4 This is a schematic diagram of the structure of another display panel provided in the embodiments of this application;

[0030] Figure 5 This is a flowchart illustrating a method for manufacturing a display panel according to an embodiment of this application;

[0031] Figures 6 to 9 This is a schematic diagram of a manufacturing process for a display panel provided in an embodiment of this application.

[0032] Explanation of reference numerals in the attached drawings: 100, display panel; 110, flattened area; 120, bending area; 200, support plate; 210, support part; 220, bending part; 221, first film layer; 221a, first bending section; 221b, first flattened section; 222, second film layer; 222a, second bending section; 222b, second flattened section; 230, limiting groove; 231, inclined surface; 240, limiting protrusion; 241, top surface; 242, side surface; 250, tooth structure. Detailed Implementation

[0033] The features and exemplary embodiments of various aspects of this application will now be described in detail. Numerous specific details are set forth in the following detailed description to provide a comprehensive understanding of this application. However, it will be apparent to those skilled in the art that this application can be implemented without requiring some of these specific details. The following description of embodiments is merely intended to provide a better understanding of this application by illustrating examples. In the accompanying drawings and the following description, at least some well-known structures and techniques are not shown to avoid unnecessarily obscuring the application; and, for clarity, the dimensions of some structures may be exaggerated. Furthermore, the features, structures, or characteristics described below can be combined in any suitable manner in one or more embodiments.

[0034] In the description of this application, it should be noted that, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," etc., indicating orientation or positional relationships are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0035] The directional terms appearing in the following description refer to the directions shown in the figures and are not intended to limit the specific structure of the embodiments of this application. It should also be noted in the description of this application that, unless otherwise explicitly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0036] like Figures 1 to 3 As shown, a first aspect of this application provides a display module, including a display panel 100 and a support plate 200. The support plate 200 is disposed on one side of the display panel 100 and includes a bent portion 220 and support portions 210 disposed on both sides of the bent portion 220 along the extending direction of the support plate 200. The support portions 210 are fixedly connected to the display panel 100. The support plate 200 includes a bent state and a non-bent state. In the non-bent state, at least a portion of the bent portion 220 abuts against the display panel 100. In the bent state, the bent portion 220 is bent along the thickness direction of the display panel 100, and at least a portion of the bent portion 220 has a gap with the display panel 100.

[0037] In this embodiment, the support plate 200 includes a bending portion 220 and a support portion 210. The support plate 200 has a bent state and a non-bent state due to the bendable characteristic of the bending portion 220. The support plate 200 is disposed on one side of the display panel 100, and the support portion 210 is fixedly connected to the display panel 100 so that the display panel 100 changes synchronously with the change of the state of the support plate 200. When the support plate 200 is in a bent state, the display panel 100 is in a bent state; when the support plate 200 is in a non-bent state, the display panel 100 is in a non-bent state. This allows the display module to have a flat state, a bent state, and a transitional state between the flat state and the bent state. In the non-bent state, at least a portion of the bending portion 220 abuts against the display panel 100, and the bending portion 220 provides support for the display panel 100. When the support plate 200 is in a bent state, the bent portion 220 bends along the thickness direction of the display panel 100, and at least part of the bent portion 220 has a gap with the display panel 100 to reduce the stress on the bent portion 220 and the display panel 100 in the bent state and reduce the problem of film peeling of the display module.

[0038] like Figure 1 and Figure 3 As shown, in some optional embodiments, the display panel 100 includes a bending area 120 and a flattening area 110 connected to both sides of the bending area 120. The support portion 210 is connected to the flattening area 110, and the bending portion 220 and the bending area 120 are movably disposed relative to each other in a direction perpendicular to the extension direction.

[0039] In these optional embodiments, the flattened area 110 and the support portion 210 of the display panel 100 are disposed opposite to each other, and the support portion 210 is connected to the flattened area 110 to keep the display panel 100 and the support plate 200 in a relative position. The bending portion 220 is disposed opposite to the bending area 120. When the support plate 200 is in a bent state, due to the difference in materials between the display panel 100 and the support plate 200, the curvatures of the display panel 100 and the support plate 200 are different during bending. The bending portion 220 and the bending area 120 are movably disposed relative to each other along a direction perpendicular to the extension direction to reduce the bending stress between the bending portion 220 and the bending area 120 and reduce the problem of film peeling in the display module.

[0040] like Figure 1 and Figure 3 As shown, in some optional embodiments, the bending portion 220 includes a first film layer 221 and a second film layer 222 stacked along the extension direction. The two ends of the first film layer 221 and the second film layer 222 along the extension direction are connected to the support portion 210, and the first film layer 221 and the second film layer 222 are movably disposed relative to each other along the extension direction.

[0041] In these optional embodiments, the first film layer 221 and the second film layer 222 are connected to the support portion 210 at both ends along the extension direction. When the bending portion 220 is bent from the non-bent state to the bent state, the bending radii of the first film layer 221 and the second film layer 222 are different, so the bending stress of the first film layer 221 and the second film layer 222 is different during the bending process. The first film layer 221 and the second film layer 222 are made movable along the extension direction perpendicular to the support plate 200 to reduce the bending stress between the first film layer 221 and the second film layer 222 and reduce the problem of peeling between the first film layer 221 and the second film layer 222.

[0042] like Figure 3 As shown, in some optional embodiments, the materials of the first film layer 221 and / or the second film layer 222 include polyester materials.

[0043] In these optional embodiments, the material of the first film layer 221 or the second film layer 222 includes polyester material, or both the materials of the first film layer 221 and the second film layer 222 include polyester material. Specifically, it can be an elastic material such as thermoplastic polyester elastomer or polyester rubber, thereby giving the first film layer 221 and the second film layer 222 good elasticity.

[0044] like Figure 1 , Figure 2 and Figure 4 As shown, in some optional embodiments, in the non-bending state, the spacing between the first film layer 221 and the second film layer 222 is equal; in the bending state, along the extension direction, the spacing between the first film layer 221 and the second film layer 222 gradually decreases from both ends to the middle.

[0045] In these alternative embodiments, in the non-bending state, the spacing between the first film layer 221 and the second film layer 222 is equal, the bending portion 220 is in a flat state, and the bending portion 220 can provide better support for the display panel 100.

[0046] In the bent state, the two ends of the first film layer 221 and the second film layer 222 are connected to the support portion 210 along the extension direction. The distance between the first film layer 221 and the second film layer 222 is equal to the thickness of the support portion 210. The distance between the first film layer 221 and the second film layer 222 gradually decreases from both ends to the middle, thereby creating a gap between the first film layer 221 and the second film layer 222 and the bending area 120, thus reducing the stress between the support plate 200 and the display panel 100. In the bent state, along the extension direction, the distance between the first film layer 221 and the second film layer 222 gradually decreases from both ends to the middle, as shown in the figure. Figure 4As shown, the distance H1 between the first film layer 221 and the second film layer 222 is greater than the distance H2 near the middle when the two ends are closer. That is, the bending portion 220 gradually becomes thinner from the two ends to the middle, and the radius of curvature of the first film layer 221 gradually increases from the two ends to the middle. This causes the bending stress of the bending portion 220 to gradually increase from the two ends to the middle, thereby concentrating the bending stress in the middle of the first film layer 221 to reduce the bending stress of the first film layer 221 near the two ends, thereby reducing the risk of the support plate 200 peeling off from the display panel 100.

[0047] like Figure 3 and Figure 4 As shown, in some optional embodiments, the first film layer 221 is disposed on the side of the second film layer 222 facing the display panel 100, the side of the first film layer 221 facing the second film layer 222 is provided with a plurality of limiting grooves 230, and the side of the second film layer 222 facing the first film layer 221 is provided with a plurality of limiting protrusions 240, and each limiting protrusion 240 is movably disposed in each limiting groove 230.

[0048] In these optional embodiments, multiple limiting protrusions 240 are located within multiple limiting grooves 230. The limiting grooves 230 can limit the position of the limiting protrusions 240, thereby ensuring the relative position of the first film layer 221 and the second film layer 222 in the extension direction of the support plate 200, and preventing the first film layer 221 and the second film layer 222 from being misaligned during bending. Furthermore, there are multiple limiting protrusions 240 and limiting grooves 230. The limiting protrusions 240 and limiting grooves 230 abut against each other. When the radius of curvature of the first film layer 221 and the second film layer 222 is too large at a certain position during bending, resulting in stress concentration, the distance between the limiting protrusion 240 and the limiting groove 230 at that position is the smallest, and the abutting force between the limiting protrusion 240 and the limiting groove 230 is also the largest. This increases the difficulty for the first film layer 221 and the second film layer 222 at the stress concentration position to continue to deform. On the other hand, the abutting force between the limiting protrusion 240 and the limiting groove 230 at the position with a smaller radius of curvature is also smaller, making it easier for deformation to continue. This makes the curvature change of the first film layer 221 and the second film layer 222 more uniform and prevents stress concentration. The limiting protrusions 240 and limiting grooves 230 are set to disperse the bending stress between the first film layer 221 and the second film layer 222, thereby reducing the risk of stress concentration in the first film layer 221 and the second film layer 222.

[0049] like Figure 3 As shown, in some optional embodiments, the limiting groove 230 includes two inclined surfaces 231 disposed opposite each other along the extending direction. The distance between the two inclined surfaces 231 gradually increases along the direction close to the second film layer 222, and the limiting protrusion 240 abuts between the two inclined surfaces 231.

[0050] In these optional embodiments, the distance between the two inclined surfaces 231 gradually increases in the direction close to the second film layer 222, thereby accommodating the limiting protrusion 240. The limiting protrusion 240 abuts against the two opposing inclined surfaces 231, which can support the first film layer 221 and the second film layer 222. Furthermore, the limiting protrusion 240 abuts against the opposing inclined surfaces 231, thereby dispersing the bending stress of the first film layer 221 and the second film layer 222 to the contact point between the limiting protrusion 240 and the limiting groove 230 when the bending portion 220 bends.

[0051] During the bending process of the support plate 200, the first film layer 221 bends, and the distance between the two opposing inclined surfaces 231 gradually increases, so that the limiting protrusion 240 can gradually extend into the limiting groove 230 and approach the first film layer 221. That is, the first film layer 221 is further away from the bending area 120. The distance between the first film layer 221 and the second film layer 222 gradually decreases, and the thickness of the bending portion 220 formed by the first film layer 221 and the second film layer 222 becomes thinner, thus creating a gap with the bending area 120 of the display panel 100. That is, the bending area 120 of the display panel 100 and the bending portion 220 are isolated from each other, and no interaction force is generated between the bending area 120 and the bending portion 220, thus avoiding the peeling phenomenon of the display panel 100.

[0052] like Figures 2 to 4 As shown, in some optional embodiments, a plurality of limiting grooves 230 and a plurality of limiting protrusions 240 are arranged along the extension direction. In the non-bent state, the maximum distance between the two inclined surfaces 231 of each limiting groove 230 is equal. In the bent state, along the extension direction, the maximum distance between the inclined surfaces 231 of each groove arranged sequentially from both ends to the middle increases sequentially, and the distance between each limiting surface arranged sequentially from both ends to the middle and the first film layer 221 decreases sequentially.

[0053] In these optional embodiments, when the support plate 200 is in a non-bent state, the maximum distance between the two inclined surfaces 231 of each limiting groove 230 is equal, so that the positions of each limiting protrusion 240 and the limiting groove 230 along the thickness direction of the support plate 200 are the same, thereby making the distance between the first film layer 221 and the second film layer 222 equal.

[0054] When the support plate 200 is in a bent state, along the extension direction of the support plate 200, the radius of curvature of the first film layer 221 gradually increases from both ends towards the middle, and the distance between the two oppositely arranged inclined surfaces 231 gradually increases, such as... Figure 4As shown, the distance W1 between the two inclined surfaces 231 near the two ends is smaller than the distance W2 between the two inclined surfaces 231 near the middle, so that the limiting protrusion 240 can be closer to the first film layer 221, and the distance between the first film layer 221 and the second film layer 222 gradually decreases from the two ends to the middle, so that the bending stress of the bent portion 220 gradually increases from the two ends to the middle, reducing the bending stress at both ends of the bent portion 220, thereby reducing the risk of peeling between the support plate 200 and the display panel 100.

[0055] like Figure 3 As shown, in some optional embodiments, the limiting protrusion 240 is a rectangular protrusion, which includes a top surface 241 facing the first film layer 221 and a side surface 242 connected to the top surface 241. The top surface 241 and the side surface 242 are connected by an arc transition surface, which abuts against the inclined surface 231.

[0056] In these optional embodiments, the limiting protrusion is formed by protruding from the second film layer 222 toward the first film layer 221. The limiting protrusion is a rectangular protrusion. The corner position between the top surface 241 and the side surface 242 of the rectangular protrusion is the contact point with the limiting groove 230. During the bending process, the distance between the two inclined surfaces 231 of the limiting groove 230 increases or decreases due to the change in the radius of curvature of the first film layer 221. As a result, the position change between the rectangular protrusion and the inclined surface 231 generates sliding friction. The top surface 241 and the side surface 242 are connected by an arc transition surface to reduce the friction between the rectangular protrusion and the inclined surface 231, thereby making the bending process of the display module smoother.

[0057] like Figure 3 As shown, in some optional embodiments, a plurality of tooth structures 250 are provided on the side of the first film layer 221 facing the second film layer 222. The cross section of the tooth structure 250 along the extension direction is a triangular structure. Two adjacent tooth structures 250 form a limiting groove 230. At least a portion of the triangular structure is provided between two adjacent limiting protrusions 240.

[0058] In these optional embodiments, the limiting groove 230 is composed of a toothed structure 250. The cross-section of the toothed structure 250 along the extension direction of the support plate 200 is triangular, so that the toothed structure 250 has better structural strength and reduces the problem of deformation of the limiting groove 230. Furthermore, the triangular toothed structure 250 can form two inclined surfaces 231, that is, three toothed structures 250 can form two limiting grooves 230, thereby making the arrangement of the limiting grooves 230 more compact.

[0059] At least a portion of the triangular structure is disposed between two adjacent limiting protrusions 240 to limit the relative position between the triangular structure and the limiting protrusions 240, thereby preventing the limiting protrusions 240 and the limiting grooves 230 from being misaligned.

[0060] like Figure 2 and Figure 3 As shown, in some optional embodiments, in the non-bent state, the length of the bent portion 220 along the extension direction is a first length, and in the bent state, the length of the bent portion 220 along the extension direction is a second length, the second length being greater than the first length.

[0061] In these alternative embodiments, when bent, the length of the bent portion 220 increases, thereby extending the bent portion 220 in a direction away from the display panel 100, so that a gap is created between the bent portion 220 and the display panel 100, thereby reducing the bending stress between the bent portion 220 and the bending area 120 and reducing the risk of the support plate 200 peeling off from the display panel 100.

[0062] The second aspect of this application provides a method for manufacturing a display module, such as... Figure 5 As shown, it includes:

[0063] Step S01: As Figure 6 As shown, the first film layer 221 includes a first bent section 221a and a first flattened section 221b located on both sides of the first bent section 221a, and a plurality of limiting grooves 230 are formed in the first bent section 221a.

[0064] Step S02: As Figure 7 As shown, the second film layer 222 includes a second bent section 222a and a second flattened section 222b located on both sides of the second bent section 222a, and a plurality of limiting protrusions 240 are formed in the second bent section 222a.

[0065] Step S03: As Figure 8 As shown, the first flattened section 221b and the second flattened section 222b are respectively attached to the support part 210, the limiting protrusion 240 and the limiting groove 230 are arranged opposite to each other, and each limiting protrusion 240 is disposed in each limiting groove 230.

[0066] Step S04: As Figure 9 As shown, the support portion 210 and the first film layer 221 are disposed on one side of the display panel 100, and the second film layer 222 is located on the side of the first film layer 221 away from the display panel 100, connecting the support portion 210 to the display panel 100.

[0067] In this embodiment, the first flattened section 221b is located on both sides of the first bent section 221a, and the second flattened section 222b is located on both sides of the second bent section 222a. The two first flattened sections 221b and the two second flattened sections 222b are respectively disposed opposite to each other and attached to both sides of the two support portions 210 in the thickness direction, thereby forming a bendable support plate 200. The limiting protrusion 240 and the limiting groove 230 are disposed opposite to each other on the inner side of the first bent section 221a and the second bent section 222a, so that the support portion 210 and the first film layer 221 are disposed on one side of the display panel 100, and the second film layer 222 is located on the side of the first film layer 221 away from the display panel 100, thus connecting the support portion 210 to the display panel 100. Multiple limiting protrusions 240 are located within multiple limiting grooves 230. The limiting grooves 230 can limit the position of the limiting protrusions 240, thereby ensuring the relative position of the first film layer 221 and the second film layer 222 in the extending direction of the support plate 200 and preventing misalignment of the first film layer 221 and the second film layer 222 during bending. Furthermore, the multiple limiting protrusions 240 and limiting grooves 230 can disperse the bending stress between the first film layer 221 and the second film layer 222 through the limiting protrusions 240 and limiting grooves 230, reducing the risk of deformation of the first film layer 221 and the second film layer 222.

[0068] The support portion 210 is fixedly connected to the display panel 100 so that the display panel 100 changes synchronously with the change of the state of the support plate 200. In the non-bent state, at least a portion of the support plate 200 is bent, with the bent portion 220 abutting against the display panel 100, providing support for the display panel 100. When the support plate 200 is bent, the bent portion 220 bends along the thickness direction of the display panel 100, and at least a portion of the bent portion 220 has a gap with the display panel 100 to reduce the stress on the bent portion 220 and the display panel 100 in the bent state, thereby reducing the problem of film peeling in the display module.

[0069] like Figure 8 As shown, a third aspect of this application provides a support plate 200, including a bent portion 220 and support portions 210 disposed on both sides of the bent portion 220 along the extension direction of the support plate 200. The bent portion 220 includes a first film layer 221 and a second film layer 222 stacked along the extension direction. The two ends of the first film layer 221 and the second film layer 222 along the extension direction are connected to the support portion 210. The first film layer 221 and the second film layer 222 are movably disposed relative to each other along the extension direction.

[0070] In this embodiment, the first film layer 221 and the second film layer 222 are connected to the support portion 210 at both ends along the extension direction of the support plate 200. During the bending process of the bending portion 220, the bending radii of the first film layer 221 and the second film layer 222 are different, resulting in different bending stresses of the first film layer 221 and the second film layer 222 during the bending process. The first film layer 221 and the second film layer 222 are made movable along the extension direction perpendicular to the support plate 200 to reduce the bending stress between the first film layer 221 and the second film layer 222 and reduce the problem of peeling between the first film layer 221 and the second film layer 222.

[0071] like Figure 4 and Figure 8 As shown, in some optional embodiments, the support plate 200 includes a bent state and a non-bent state; in the non-bent state, the spacing between the first film layer 221 and the second film layer 222 is equal; in the bent state, along the extension direction, the spacing between the first film layer 221 and the second film layer 222 gradually decreases from both ends toward the middle.

[0072] In these alternative embodiments, in the non-bending state, the spacing between the first film layer 221 and the second film layer 222 is equal, the bending portion 220 is in a flat state, and the bending portion 220 can provide better support for the display panel 100.

[0073] In the bent state, the support portion 210 is connected to both ends of the first film layer 221 and the second film layer 222 along the extension direction. The distance between the first film layer 221 and the second film layer 222 is equal to the thickness of the support portion 210. The distance between the first film layer 221 and the second film layer 222 gradually decreases from both ends to the middle, that is, the bent portion 220 gradually becomes thinner from both ends to the middle, so that the bending stress of the bent portion 220 gradually increases from both ends to the middle, thereby reducing the risk of the support plate 200 peeling off from the display panel 100.

[0074] like Figure 8 As shown, in some optional embodiments, the first film layer 221 is provided with a plurality of limiting grooves 230 on the side facing the second film layer 222, and the second film layer 222 is provided with a plurality of limiting protrusions 240 on the side facing the first film layer 221, and each limiting protrusion 240 is movably disposed in each limiting groove 230.

[0075] In these optional embodiments, multiple limiting protrusions 240 are located within multiple limiting grooves 230. The limiting grooves 230 can define the position of the limiting protrusions 240, thereby ensuring the relative position of the first film layer 221 and the second film layer 222 in the extending direction of the support plate 200 and preventing misalignment of the first film layer 221 and the second film layer 222 during bending. Furthermore, the multiple limiting protrusions 240 and limiting grooves 230 can disperse the bending stress between the first film layer 221 and the second film layer 222 through the limiting protrusions 240 and limiting grooves 230, reducing the risk of deformation of the first film layer 221 and the second film layer 222.

[0076] like Figure 4 and Figure 8 As shown, in some optional embodiments, the limiting groove 230 includes two inclined surfaces 231 arranged opposite each other along the extension direction. The distance between the two inclined surfaces 231 gradually increases along the direction close to the second film layer 222, and the limiting protrusion 240 abuts between the two inclined surfaces 231. In the non-bent state, the maximum distance between the two inclined surfaces 231 of each limiting groove 230 is equal. In the bent state, along the extension direction, the maximum distance between the two inclined surfaces 231 of each groove arranged sequentially from both ends to the middle increases sequentially, and the distance between each limiting protrusion arranged sequentially from both ends to the middle and the first film layer 221 decreases sequentially.

[0077] In these optional embodiments, the distance between the two inclined surfaces 231 gradually increases in the direction close to the second film layer 222, thereby accommodating the limiting protrusion 240. The limiting protrusion 240 abuts against the two opposing inclined surfaces 231, which can support the first film layer 221 and the second film layer 222. Furthermore, the limiting protrusion 240 abuts against the opposing inclined surfaces 231, thereby dispersing the bending stress of the first film layer 221 and the second film layer 222 to the contact point between the limiting protrusion 240 and the limiting groove 230 when the bending portion 220 bends.

[0078] During the bending process of the support plate 200, the first film layer 221 bends, and the distance between the two oppositely arranged inclined surfaces 231 gradually increases, so that the limiting protrusion 240 can gradually extend into the limiting groove 230 and approach the first film layer 221. The distance between the first film layer 221 and the second film layer 222 gradually decreases, and the thickness of the bent portion 220 formed by the first film layer 221 and the second film layer 222 becomes thinner, thus creating a gap with the bending area 120 of the display panel 100.

[0079] When the support plate 200 is in a non-bent state, the maximum distance between the two inclined surfaces 231 of each limiting groove 230 is equal, so that the positions of each limiting protrusion 240 and the limiting groove 230 along the thickness direction of the support plate 200 are the same, thereby making the distance between the first film layer 221 and the second film layer 222 equal.

[0080] When the support plate 200 is in a bent state, along the extension direction of the support plate 200, the radius of curvature of the first film layer 221 gradually increases from both ends to the middle, and the distance between the two oppositely arranged inclined surfaces 231 gradually increases, so that the limiting protrusion 240 can get closer to the first film layer 221, and the distance between the first film layer 221 and the second film layer 222 gradually decreases from both ends to the middle, thereby increasing the bending stress of the bent portion 220 from both ends to the middle, reducing the bending stress at both ends of the bent portion 220, and reducing the risk of peeling between the support plate 200 and the display panel 100.

[0081] Although this application has been described with reference to preferred embodiments, various modifications can be made thereto and components can be replaced with equivalents without departing from the scope of this application. In particular, the technical features mentioned in the various embodiments can be combined in any manner, provided there is no structural conflict. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A display module, characterized in that, include: Display panel; A support plate is disposed on one side of the display panel. The support plate includes a bent portion and support portions disposed on both sides of the bent portion along the extending direction of the support plate. The support portions are fixedly connected to the display panel. The support plate includes a bent state and a non-bent state. In the non-bent state, at least a portion of the bent portion abuts against the display panel. In the bent state, the bent portion is bent along the thickness direction of the display panel, and at least a portion of the bent portion has a gap with the display panel. The bending portion includes a first film layer and a second film layer stacked along a direction perpendicular to the extension direction. The first film layer is disposed on the side of the second film layer facing the display panel. The side of the first film layer facing the second film layer has a plurality of limiting grooves, and the side of the second film layer facing the first film layer has a plurality of limiting protrusions. Each limiting protrusion is movably disposed in each limiting groove. The limiting groove includes two inclined surfaces disposed opposite each other along the extension direction. The distance between the two inclined surfaces gradually increases along the direction close to the second film layer, and the limiting protrusion abuts between the two inclined surfaces.

2. The display module according to claim 1, characterized in that, The display panel includes a bending area and a flattened area connected to both sides of the bending area. The support is connected to the flattened area, and the bending part and the bending area are movably disposed relative to each other along a direction perpendicular to the extension direction.

3. The display module according to claim 1, characterized in that, The first film layer and the second film layer are connected to the support portion at both ends along the extension direction, and the first film layer and the second film layer are movably disposed relative to each other along a direction perpendicular to the extension direction.

4. The display module according to claim 3, characterized in that, The material of the first film layer and / or the second film layer includes polyester material.

5. The display module according to claim 3, characterized in that, In the non-bending state, the spacing between the first film layer and the second film layer is equal; In the bent state, along the extension direction, the distance between the first film layer and the second film layer gradually decreases from both ends toward the middle.

6. The display module according to claim 5, characterized in that, The plurality of limiting grooves and the plurality of limiting protrusions are arranged along the extending direction, and in the non-bent state, the maximum distance between the two inclined surfaces of each limiting groove is equal. In the bent state, along the extension direction, the maximum spacing between the inclined surfaces of each groove arranged sequentially from the two ends toward the middle increases sequentially, and the spacing between each limiter arranged sequentially from the two ends toward the middle and the first film layer decreases sequentially.

7. The display module according to claim 1, characterized in that, The limiting protrusion is a rectangular protrusion, which includes a top surface facing the first film layer and a side surface connected to the top surface. The top surface and the side surface are connected by an arc transition surface, and the arc transition surface abuts against the inclined surface.

8. The display module according to claim 7, characterized in that, The first film layer has a plurality of tooth structures on the side facing the second film layer. The cross-section of the tooth structure along the extension direction is a triangular structure. Two adjacent tooth structures form the limiting groove. At least a portion of the triangular structure is disposed between two adjacent limiting protrusions.

9. The display module according to claim 1, characterized in that, In the non-bent state, the length of the bent portion along the extension direction is a first length; in the bent state, the length of the bent portion along the extension direction is a second length, and the second length is greater than the first length.

10. A method for manufacturing a display module, characterized in that, include: The first membrane layer includes a first bent section and a first flattened section located on both sides of the first bent section. A plurality of limiting grooves are formed in the first bent section, and the limiting grooves include two inclined surfaces disposed opposite to each other. The second film layer includes a second bent section and a second flattened section located on both sides of the second bent section, and a plurality of limiting protrusions are formed in the second bent section; The first flattened section and the second flattened section are respectively attached to the support part. The limiting protrusion and the limiting groove are arranged opposite to each other. Along the direction close to the second film layer, the distance between the two inclined surfaces gradually increases. Each limiting protrusion is arranged in each limiting groove. The limiting protrusion abuts between the two inclined surfaces. The support portion and the first film layer are disposed on one side of the display panel, and the second film layer is located on the side of the first film layer opposite to the display panel, and the support portion is connected to the display panel.

11. A support plate, characterized in that, The device includes a bending portion and support portions disposed on both sides of the bending portion along the extension direction of the support plate. The bending portion includes a first film layer and a second film layer stacked perpendicular to the extension direction. The two ends of the first film layer and the second film layer along the extension direction are connected to the support portion. The first film layer and the second film layer are movably disposed relative to each other along the perpendicular extension direction. The first film layer has a plurality of limiting grooves on the side facing the second film layer, and the second film layer has a plurality of limiting protrusions on the side facing the first film layer. Each limiting protrusion is movably disposed in each limiting groove. The limiting groove includes two inclined surfaces arranged opposite each other along the extending direction. The distance between the two inclined surfaces gradually increases along the direction close to the second film layer, and the limiting protrusion abuts between the two inclined surfaces.

12. The support plate according to claim 11, characterized in that, The support plate includes a bent state and a non-bent state; In the non-bending state, the spacing between the first film layer and the second film layer is equal; In the bent state, along the extension direction, the distance between the first film layer and the second film layer gradually decreases from both ends toward the middle.

13. The support plate according to claim 12, characterized in that, In the non-bent state, the maximum distance between the two inclined surfaces of each limiting groove is equal. In the bent state, along the extension direction, the maximum distance between the two inclined surfaces of each groove arranged sequentially from the two ends toward the middle increases sequentially, and the distance between each limiting element arranged sequentially from the two ends toward the middle and the first film layer decreases sequentially.

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