Display module, method for manufacturing the same, and display device

Abstract

The application provides a display module, a preparation method thereof and a display device. The display module comprises a bending area and a non-bending area, and comprises a display panel, a protective layer, a connecting layer and a supporting layer which are arranged in layers. The supporting layer comprises a carbon fiber material and is arranged on the side opposite to the light-emitting direction of the display panel. The supporting layer comprises a plurality of through holes arranged in the bending area, and at least one of the through holes is filled with a filler.

Description

TECHNICAL FIELD

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

[0002] With the continuous development of display technology, display devices have been widely used in people's daily life and work, among which, flexible display products have the advantages of foldable, thin and light, and are more and more favored by people.

[0003] The flexible display product has a flexible display panel and a support back plate supporting the display panel. In the related art, in order to ensure sufficient support capability for the folding display module, a support plate is usually added to the back of the display panel, and in order to reduce the bending stress of the display module and improve the bending capability, a hole can be punched at the bending position of the support plate.

[0004] However, the present inventors have found that, due to the adhesion between the display panel and the support plate, the glue between the hole position of the support plate and the display panel will deform through the hole position during the manufacturing process of the display module, and then film printing occurs, which reduces the glue between the support plate and the display panel, and is not conducive to the repeated folding of the display module. SUMMARY

[0005] Therefore, the purpose of the present application is to provide a display module, a preparation method thereof and a display device to solve or partially solve the above problems.

[0006] To achieve the above purpose, the first aspect of the present application provides a display module,

[0007] The display module comprises a bending area and a non-bending area, and comprises a display panel, a protection layer, a connection layer and a support layer which are stacked, the support layer comprises a carbon fiber material, and the support layer is arranged on the side opposite to the light emitting direction of the display panel.

[0008] The support layer comprises a plurality of through holes arranged in the bending area, and at least one of the through holes is filled with a filler.

[0009] Optionally, the filler is an organic material.

[0010] Optionally, the filler is a silicone resin.

[0011] Optionally, the plurality of through holes are arranged in an array in the support layer.

[0012] Optionally, the through hole comprises a strip-shaped hole, and the length direction of the strip-shaped hole is parallel to the axis of the bending area.

[0013] Optionally, the bending area comprises a first bending area bending towards the display panel, and the through holes comprise first through holes, and a plurality of the first through holes are arranged in the first bending area.

[0014] Optionally, the bending area comprises a second bending area bending towards the support layer, and the through holes comprise second through holes, and a plurality of the second through holes are arranged in the second bending area.

[0015] Optionally, a plurality of the first through holes are arranged in the first bending area, and adjacent first through holes are staggered arranged along the bending direction of the first bending area.

[0016] Optionally, a plurality of the second through holes are arranged in the second bending area, and adjacent second through holes are arranged side by side along the bending direction of the second bending area.

[0017] Optionally, the length of the first through hole is greater than the length of the second through hole, the width of the first through hole is greater than the width of the second through hole, and the arrangement density of the plurality of first through holes is less than the arrangement density of the plurality of second through holes.

[0018] Optionally, the length of the first through hole is 2-3 times the length of the second through hole, and the width of the first through hole is 1-2 times the width of the second through hole.

[0019] Optionally, the connecting layer comprises a base layer, and both surfaces of the base layer are provided with adhesive glue, and are bonded with the protective layer and the support layer respectively.

[0020] Optionally, the base layer comprises a light-absorbing material.

[0021] Based on the same inventive concept, the second aspect of the present application provides a preparation method of a display module, the display module comprising a bending area and a non-bending area, the method comprising:

[0022] Preparation of a support layer comprising a plurality of through holes, the support layer comprising a carbon fiber material, and the plurality of through holes being formed in the bending area;

[0023] Filling a filler in at least one of the through holes of the support layer;

[0024] Providing a protective layer on the side of the display panel opposite to the light-emitting direction;

[0025] Connecting the support layer and the protective layer by a connecting layer.

[0026] Optionally, filling a filler in at least one of the through holes of the support layer comprises:

[0027] Providing a first mold for supporting the support layer;

[0028] placing the support layer on the first mold;

[0029] placing a second mold on the support layer, the second mold comprising a groove for placing a filling material and a plurality of channels arranged at the bottom of the groove, the plurality of channels corresponding to the plurality of through holes one by one;

[0030] placing the filling material in the groove;

[0031] filling the filling material into the through holes through the channels by a hot-pressing method.

[0032] Optionally, the channel comprises a first opening towards the groove and a second opening away from the groove, and the diameter of the second opening is smaller than that of the first opening.

[0033] Based on the same inventive concept, the third aspect of the present application provides a display device comprising the display module of any one of the first aspect.

[0034] As can be seen from the above, the display module, the preparation method thereof and the display device provided by the present application, the display module comprises a bending area and a non-bending area, and comprises a display panel, a protective layer, a connecting layer and a support layer arranged in layers, the support layer comprises a carbon fiber material, and the support layer is arranged on the side opposite to the light-emitting direction of the display panel; the filling material for supporting the connecting layer is filled into the through hole of the bending area of the support layer, and in the case that the connecting layer is supported by the filling material, the connecting layer is prevented from overflowing through the through hole, the thickness of the connecting layer between the support layer and the display panel is ensured, and the bending performance of the module is improved. BRIEF DESCRIPTION OF DRAWINGS

[0035] In order to more clearly illustrate the technical solutions in the present application or related art, the drawings needed to be used in the embodiments or related art description will be briefly introduced. Obviously, the drawings in the following description are only embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0036] Figure 1 A structural schematic diagram of an exemplary display module is shown.

[0037] Figure 2 A display module bending state diagram of the embodiment of the present application is shown.

[0038] Figure 3 A schematic diagram of an exemplary display module in a bending state of the embodiment of the present application is shown.

[0039] Figure 4 A hierarchical structure diagram of an exemplary display module provided by the embodiment of the present application is shown.

[0040] Figure 5 A schematic diagram of the arrangement of the through holes in the support layer for the embodiment of the present application.

[0041] Figure 6 A schematic diagram of the preparation method of a display module for the embodiment of the present application.

[0042] Figure 7 A schematic diagram of the clamping of the support layer by the first mold and the second mold for the embodiment of the present application.

[0043] Figure 8 A schematic diagram of the filling of the through hole with the filler for the embodiment of the present application.

[0044] Figure 9 A schematic diagram of the filling of the through hole with the filler for the embodiment of the present application.

[0045] Figure 10 A schematic diagram of the use of the first mold and the second mold for the embodiment of the present application.

[0046] In the drawings:

[0047] 1, cover plate; 2, adhesive layer; 3, display panel; 4, protective layer; 5, connecting layer; 6, support layer; 7, filler; 11, first bending area; 12, second bending area; 51, adhesive; 52, base layer; 60, through hole; 60A, first through hole; 60B, second through hole; 61, film print; 81, first mold; 82, second mold; 820, groove; 821, channel; 822, placement portion; 823, protrusion; 824, heating wire; 101, non-bending area; 102, bending area. DETAILED DESCRIPTION

[0048] In order to make the purpose, technical solutions and advantages of the present application more clear, the present application is further described in detail below with reference to specific embodiments and the accompanying drawings.

[0049] It should be noted that, unless otherwise defined, technical terms or scientific terms used in the embodiments of the present application shall have the common meaning understood by one of ordinary skill in the art to which the present application pertains. The terms "first", "second", and similar terms used in the embodiments of the present application do not denote any order, quantity, or importance, but are used to distinguish different components. The terms "include", "contain", and similar terms mean that the elements or objects before the terms encompass the elements or objects listed after the terms and their equivalents, and do not exclude other elements or objects. The terms "connect" or "connected" and similar terms do not mean only physical or mechanical connections, but can include electrical connections, whether direct or indirect. The terms "upper", "lower", "left", "right", and the like are used only to represent relative positional relationships, and when the absolute positions of the described objects are changed, the relative positional relationships can also be changed accordingly.

[0050] Figure 1 A structural schematic diagram of an example display module is shown.

[0051] As Figure 1 shown, in the related art, the folding display screen needs to ensure sufficient support capability, and a support plate 6 of about 120 μm to 170 μm is added at the back of the display panel 3. The support plate 6 can be made of materials such as titanium alloy, carbon fiber, and stainless steel (SUS). In some embodiments, the support plate 6 can be made of carbon fiber material. Since the carbon fiber material has low density and high modulus, the mechanical strength can be met while the module weight is reduced. In some scenarios, when the size of the display module is large, in order to meet the mechanical strength while ensuring a lighter module weight, the carbon fiber material is usually preferred.

[0052] Figure 2 A bending state schematic diagram of the display module is shown.

[0053] As Figure 2 shown, the display module in the bending state can be divided into a bending area 102 and a non-bending area 101. The bending area 102 can further include an outer bending area 12 and an inner bending area 11.

[0054] In combination with Figure 1 and Figure 2 shown, in order to reduce the bending stress and improve the bending capability at the position of the outer bending area 12, especially in a large-size display module, a through hole 60 can be provided in the bending area 102.

[0055] Continuing to refer to Figure 1 shown, the adhesive between the display panel 3 and the support layer 6 is prone to deformation through the through hole 60, forming a micro-protrusion 61 (refer to Figure 1As shown in the micro-protrusions 61 in the figure, the surface of the display panel 3 appears film-printed when viewed from the light-emitting direction side, and the adhesive between the display panel 3 and the supporting layer 6 is reduced, which is not conducive to multiple folding of the display module and reduces the folding performance of the display module.

[0056] To address the above-mentioned problem, the embodiment of the present application fills the through hole 60 of the bending area 102 of the supporting layer 6 with a filler 7 for supporting the connecting layer 5. When the filler 7 supports the connecting layer 5, the connecting layer 5 is prevented from overflowing through the through hole 60, thereby ensuring the thickness of the connecting layer 5 between the supporting layer 6 and the display panel 3, which helps to improve the bending performance of the module.

[0057] The embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0058] Figure 3 A schematic diagram of an exemplary display module in a bent state is shown.

[0059] Reference Figure 3 , an embodiment of the present application provides a display module, which includes a bending area 102 and a non-bending area 101. The bending area 102 may refer to an area where the display module will bend when the body 103 of the folding screen device is folded, and the non-bending area 101 may refer to an area where the display module will not bend when the body 103 of the folding screen device is folded. It can be understood that the display module may include more than one bending area 102, and the number of bending areas 102 is determined by the number of folds of the body 103 of the folding screen device. If the body 103 of the folding screen device is only folded once (i.e., a single-folding screen device), then the display module may include one bending area 102. If the body 103 of the folding screen device is folded twice (i.e., a double-folding screen device), then the display module may include two bending areas 102, and the area outside the bending area 102 may be considered to be a non-bending area 101. For example, as Figure 2 and Figure 3 As shown, the display module may include a bending region 102, with non-bending regions 101 located on either side of the bending region 102, for supporting the display screen from both sides of the bending region. The number of bending regions 102 in the display module is not limited to the scope discussed in the embodiments of this application, but is set according to actual needs, so it will not be further explained below.

[0060] Furthermore, the bending region 102 may include a first bending region 11 bent toward the display panel 3 , and a second bending region 12 bent toward the support layer 6 .

[0061] Reference Figure 2 and Figure 3As shown, taking the inner folding screen device as an example, when the display module is in the folded state, the bending zone 102 can form a first bending zone 11 and a second bending zone 12 at different positions. Among them, the first bending zone 11 can be an inner bending zone, and the inner bending zone can refer to the area where the display module bends toward the side of the display panel 3; the second bending zone 12 can be an outer bending zone, and the outer bending zone can refer to the area where the display module bends toward the side of the support plate. Whether the bending zone 102 can specifically form an inner bending zone or an outer bending zone depends on the bending direction of the folding screen device and the structural design of the technicians. Therefore, in different folding screen devices, the distribution of the inner bending zone and the outer bending zone may be different, and the embodiments of the present application do not limit this.

[0062] Figure 4 A schematic diagram of the hierarchical structure of an exemplary display module provided in an embodiment of the present application is shown.

[0063] like Figure 4 As shown, in some embodiments, the display module may include a support layer 6, a connection layer 5, a display panel 3, and a cover plate 1, arranged in order from bottom to top. The support layer 6 is arranged on the side opposite to the light emitting direction of the display panel 3 to provide support for the display panel 3. The support layer 6 may be, for example, a titanium alloy plate, a carbon fiber plate, a stainless steel (SUS) plate, etc. In this embodiment, a carbon fiber plate is used as an example. Optionally, the thickness of the support layer 6 is: 120μm-170μm. The connection layer 5 may be, for example, an adhesive material with high temperature resistance, such as pressure-sensitive adhesive (PSA) or polyacrylate double-sided foam tape (VHB). The display panel 3 may be, for example, a flexible organic light emitting diode (OLED) display panel 3. The cover plate 1 may be the outermost protective layer arranged in the light emitting direction of the display panel 3. The cover plate 1 may be made of a flexible plastic colorless polyimide (CPI) film to increase surface hardness and resist scratches, fingerprints, and dirt.

[0064] The cover plate 1 and the display panel 3 can be bonded via an adhesive layer 2. Optionally, the adhesive layer 2 can be made of a transparent optical adhesive (OCA). Both sides of the connecting layer 5 can be adhesive (for example, by coating with a transparent optical adhesive to achieve bonding properties), and can be bonded to the display panel 3 and the support layer 6, respectively. Thus, the cover plate 1 and the support layer 6 can provide support and protection for the display panel 3 from both sides. Generally speaking, in actual production, the structure consisting of the support layer 6, the connecting layer 5, the display panel 3, and the cover plate 1 usually exists as a single component.

[0065] like Figure 4As shown, in some embodiments, a protective layer 4 can be further arranged between the display panel 3 and the connecting layer 5, and the protective layer 4 is adhered to the display panel 3 by the adhesive 51.

[0066] Specifically, the protective layer 4 is arranged between the display panel 3 and the connecting layer 5, and the protective layer 4 can adopt a U-Flim back film, wherein the back film can adopt PEG (polyethylene glycol) or PEI (polyetherimide). The back film is adhered to the side opposite to the light-emitting direction of the display panel 3 by the adhesive 51 to protect the display panel 3, wherein the adhesive can adopt a pressure-sensitive adhesive or a transparent optical adhesive.

[0067] As an optional embodiment, as shown in Figure 4 As shown, the connecting layer 5 can include a base layer 52, and the two surfaces of the base layer 52 are respectively provided with the adhesives 51 and 53 to be adhered to the protective layer 4 and the support layer 6 respectively, so as to connect the display panel 3 and the support layer 6.

[0068] In some embodiments, the base layer 52 can adopt a light-absorbing material, so that the light can be absorbed from the back of the display panel 3, so that the back of the display panel 3 presents a relatively pure black color, and the aesthetic appearance is improved. Alternatively, the base layer 52 can adopt a SUS plate or black ink to absorb the reflected light of the display panel 3.

[0069] Continuing to refer to Figure 4 In some embodiments, the support layer 6 can further include a plurality of through holes 60 arranged in the bending area 102 to reduce the stress generated when the display module is bent and ensure that the display module has sufficient support capability. Alternatively, the array-arranged through holes 60 can be formed by laser irradiation on the bending area 102 of the support layer 6 of the display module (in combination with Figure 2 As shown).

[0070] As an optional embodiment, the plurality of through holes 60 are array-arranged in the support layer 6, so that the stress can be uniformly eliminated and the folding performance is improved.

[0071] Figure 5 A schematic diagram of an exemplary support layer according to an embodiment of the present disclosure is shown.

[0072] As Figure 2 and Figure 5As shown, the bending area 102 further comprises a middle part as a first bending area 11 of inner bending area and a second bending area 12 of outer bending area. Optionally, as shown Figure 2 and Figure 5 As shown, the second bending area 12 is symmetrically arranged on both sides of the first bending area 11.

[0073] In some embodiments, as shown Figure 5 The through hole 60 can further comprise a first through hole 60A, and a plurality of the first through holes 60A are arranged in the first bending area 11 of inner bending area, so as to eliminate the stress of inner bending and improve the folding performance. Optionally, the plurality of first through holes 60A are arranged in an array in the first bending area 11, which can more evenly disperse the bending stress. As an optional embodiment, as shown Figure 5 Along the bending direction of the first bending area 11, adjacent first through holes 60A can be staggered, so as to better eliminate the bending stress and improve the folding performance.

[0074] In some embodiments, as shown Figure 5 The through hole 60 can further comprise a second through hole 60B, and a plurality of the second through holes 60B are arranged in the second bending area 12 of outer bending area, so as to eliminate the stress of outer bending and improve the folding performance. Optionally, the plurality of second through holes 60B are arranged in an array in the second bending area 12, which can more evenly disperse the bending stress. As an optional embodiment, as shown Figure 5 Along the bending direction of the second bending area 12, adjacent second through holes 60B can be arranged side by side, so as to better eliminate the bending stress and improve the folding performance.

[0075] It can be understood that the arrangement of the above-mentioned through hole is only exemplary, and any arrangement can be adopted according to actual needs, which is not limited in the present application.

[0076] In some embodiments, as shown Figure 5 The through hole 60 is a strip hole, and the length direction of the through hole 60 (first through hole 60A or second through hole 60B) is parallel to the axis of the bending area 102 (first bending area 11 or second bending area 12), so that when the display module is bent, it is bent along the center line of the strip hole to increase the bending performance of the display module.

[0077] Returning to Figure 2 It can be seen that the first bending area 11 of inner bending area has a smaller bending radius than the second bending area 12 of outer bending area, and therefore, the bending stress of the first bending area 11 is smaller than that of the second bending area 12.

[0078] Thus, in some embodiments, Figure 5 As shown, the length of the first through hole 60A is greater than the length of the second through hole 60B, the width of the first through hole 60A is greater than the width of the second through hole 60B, and the arrangement density of the plurality of first through holes 60A is less than the arrangement density of the plurality of second through holes 60B. In this way, by setting the size of the first through hole 60A to be larger, the bending stress of the first bending zone 11 can be better eliminated, and the size of the second through hole 60B is set to be relatively smaller, which can ensure the rigidity and support effect of the second bending zone 12 while eliminating the stress. On this basis, the adjacent first through holes 60A are arranged in a staggered manner, which can disperse the stress at different positions in the axial direction of the first bending zone 11, further improving the bending performance. In addition, the arrangement of the second through holes 60B arranged in parallel is more regular, which is conducive to process manufacturing.

[0079] In some embodiments, as Figure 5 As shown, the length of the first through hole 60A is 2-3 times the length of the second through hole 60B, and the width of the first through hole 60A is 1-2 times the width of the second through hole 60B, which can better eliminate the bending stress of the first bending area 11 and the second bending area 12, and ensure the rigidity and support effect of the support layer 6.

[0080] As an optional embodiment, the support layer 6 may be made of carbon fiber material. Carbon fiber material has low density, high modulus, and high rigidity, thereby being able to achieve good support while making the module lighter.

[0081] However, the inventors of the present application discovered that during the manufacturing process of the display module, due to the high rigidity of the carbon fiber material, when pressure is applied to the display panel 3 and the support layer 6, the adhesive material (for example, the adhesive material uses transparent optical glue) of the connecting layer 5 between the display panel 3 and the support layer 6 will be deformed, resulting in the formation of micro-protrusions 61 in the area corresponding to the through hole 60, so that when the display panel 3 is viewed from the side of the light emitting direction, a film print will appear, which reduces the aesthetics. At the same time, this also leads to a reduction in adhesive material, thereby reducing the bending performance of the display module.

[0082] Therefore, if Figure 4 As shown, in some embodiments, each of the through holes 60 is filled with a filler 7 for supporting the connecting layer 5. In this way, by filling the through hole 60 with the filler 7 to support the connecting layer 5, the deformation of the viscous material of the connecting layer 5 and the resulting film printing problem are solved, thereby improving the bending performance of the display module.

[0083] Optionally, when the filler 7 is made, the filling material can be liquefied by hot pressing and then flow into the through hole 60, and then solidify to form the filler after cooling, thereby realizing the filling of the through hole 60. The filler 7 supports the connecting layer 5 in the through hole 60, solves the problem that the connecting layer 5 is deformed at the through hole 60 in the pressing process of making the display module, the connecting layer 5 is slightly convex 61 at the through hole 60, the connecting layer 5 is thinned, and the bending performance of the display module is reduced, thereby greatly improving the bending performance of the display module.

[0084] In some embodiments, the filler 7 can be an organic material. Because of the better ductility, thermoplasticity and other characteristics of the organic material, the organic material can better fill the through hole 60.

[0085] Optionally, the filler 7 can be silicone or organic silicon plastic.

[0086] Specifically, the silicone can be cured at high temperature (200-250℃) for a long time or with the help of a catalyst to have better flexibility, poor paint film hardness, good impact strength, easy to fill the through hole 60, and better adapt to the folding of the display module.

[0087] The organic silicon plastic is made of silicone as the basic component, and fillers such as mica powder, asbestos, glass fiber or glass cloth, and is made by precision molding or laminating. They have high heat resistance, good electrical insulation and arc resistance, and water and moisture resistance, and have solubility (divided into dissolution and swelling), thermoplasticity (i.e. high temperature becomes liquid state), thermal stability (i.e. low temperature returns to solid state), strength characteristics (about twice the general strength of carbon or steel materials), easy to fill the through hole 60, and better adapt to the folding of the display module.

[0088] In some embodiments, the filler 7 can be formed by more than one material, for example, two or more filling materials can be selected to sequentially fill the through hole 60, so that the filler 7 is formed in a laminated structure in the through hole 60. When two or more filling materials are used to sequentially fill the through hole 60, materials with certain performance differences can be used to fill the through hole 60. For example, taking the filler 7 as a two-layer structure, the second layer material away from the connecting layer 5 can have higher strength or rigidity relative to the first layer material close to the connecting layer 5, so that the outer surface of the support layer can be more flat, and the material close to the connecting layer 5 can be bonded more tightly with the connecting layer 5 because of the relatively lower strength, which is beneficial to improve the folding strength and improve the film printing. In some embodiments, in order to make the support layer 6 have higher strength as a whole, the thickness of the second layer material can be much greater than the thickness of the first layer material along the depth direction of the through hole 60, for example, the thickness of the second layer material can be 8-10 times the thickness of the first layer material, so as to improve the strength of the support layer 6 by using the second layer material, ensure the support effect, and at the same time ensure the support effect on the connecting layer 5, which is beneficial to improve the folding strength and improve the film printing.

[0089] The application also provides a display device comprising the display module.

[0090] It should be noted that the display device can be a product with image display function, for example, it can be a display, a television, a billboard, a digital photo frame, a laser printer with display function, a telephone, a mobile phone, a personal digital assistant (PDA), a digital camera, a portable camcorder, a viewfinder, a navigator, a vehicle, a large-area wall, a household appliance, an information query device (such as a business query device of an electronic government, a bank, a hospital, a power department, a monitor, etc.).

[0091] In some embodiments, the display device can further comprise a driving circuit coupled with the display panel 3, and the driving circuit is configured to provide corresponding electrical signals to the display panel 3.

[0092] Figure 6 A flowchart of a preparation method of a display module is shown.

[0093] As Figure 6 shown, the application also provides a preparation method of a display module, the display module comprising a bending area 102 and a non-bending area 101, the method comprising:

[0094] S200, preparing a support layer 6 comprising a plurality of through holes 60, the support layer 6 comprising a carbon fiber material, and the plurality of through holes 60 being formed in the bending area 102;

[0095] S400, filling the filling 7 in at least one of the through holes 60 of the support layer 6;

[0096] S600, disposing a protection layer 4 on the side of the display panel 3 opposite to the light emitting direction, connecting the support layer 6 and the protection layer 4 by the connecting layer 5, and the filling 7 is used to support the connecting layer 5.

[0097] Specifically, the support layer 6 including a plurality of through holes 60 is prepared, including: forming the arrayed through holes 60 on the bending area 102 of the support layer 6 by laser, so that the plurality of through holes 60 are formed on the bending area 102; reducing the internal stress when the display module is bent. The support layer 6 and the display panel 3 are connected by the connecting layer 5, and the filling 7 is filled in each through hole 60 of the support layer 6, so that the filling 7 supports the connecting layer 5, to solve the problem of the deformation of the adhesive material of the connecting layer 5 into micro convexes 61, and increase the bending performance of the display module.

[0098] Figure 7 A schematic view of the first mold and the second mold clamping the support layer is shown.

[0099] As Figure 7 shown, in some embodiments, the filling 7 is filled in at least one of the through holes 60 of the support layer 6, including:

[0100] A first mold 81 for supporting the support layer 6 is provided;

[0101] The support layer 6 is placed on the first mold 81;

[0102] A second mold 82 is placed on the support layer 6, the second mold 82 including a groove 820 for placing the filling material and a plurality of channels 821 arranged at the bottom of the groove 820, the plurality of channels 821 corresponding to the plurality of through holes 60 one by one;

[0103] The filling material is placed in the groove 820;

[0104] The filling material is filled into the through holes 60 through the channels 821 by hot pressing method.

[0105] Specifically, referring to Figure 6, the first mold 81 and the second mold 82 are used in cooperation, the support layer 6 is placed on the first mold 81, the second mold 82 is placed on the support layer 6, the second mold 82 is provided with a placing part 822, the support layer 6 is located in the placing part 822, and a plurality of channels 821 on the second mold 82 correspond to a plurality of through holes 60 of the support layer 6 one by one, the first mold 81 and the second mold 82 are fixed, the fixing mode can adopt a left-right limiting mode (for example, the side walls of the first mold 81 and the second mold 82 are tightly pressed by a jacking machine to prevent dislocation of the two molds), or a clamping mode (for example, the first mold 81 and the second mold 82 can be fixed by using a clamp), the filling material is placed in the groove 820 at the top of the second mold 82, the filling material is liquefied by hot pressing, the filling material flows into the plurality of through holes 60 along the plurality of channels 821, and the filling is completed after the filling material solidifies, and the mold can be removed.

[0106] On the basis of the above embodiment, the channel 821 comprises a first opening facing the groove 820 and a second opening away from the groove 820, and the diameter of the second opening is smaller than that of the first opening.

[0107] Specifically, the diameter of the second opening of the channel 821 away from the notch is smaller than that of the first opening of the channel 821 facing the notch, and the cross section is inverted trapezoidal, so that the filling material 7 is injected into the through hole 60 along the second opening with a small diameter, the second opening faces the middle part of the through hole 60, and the filling material 7 falls into the middle part of the through hole 60 and widens towards the edge, so as to ensure that the filling material 7 can be flush with the end face of the first mold 81.

[0108] Figure 8 A structure diagram of the filling material filling the through hole is shown.

[0109] Figure 9 A structure diagram of the filling material filling part of the through hole is shown.

[0110] As shown in Figure 8 and Figure 9 , optionally, the filling material 7 can fill the through hole 60 or fill part of the through hole 60, because the end face of the support layer 6 is flush with the end face of the first mold 81, the filling material 7 can be flush with the end face of the first mold 81 after filling, and the end face of the support layer 6 in contact with the first mold 81 is used as the end face connected with the connecting layer 5. That is, the filling material 7 can fill the through hole 60 or fill part of the through hole 60. Refer to Figure 7 , when the filling material 7 fills the through hole 60 and there is residual filling material 7 in the plurality of channels 821, the mold can be directly removed, and the residual filling material 7 in the channels 821 and the filling material 7 in the through hole 60 can be pulled off.

[0111] Continue to refer to Figure 7As shown, in some embodiments, the first mold 81 is embedded with a heating wire 824.

[0112] Specifically, the heating wire 824 is provided in multiple, and the multiple heating wires 824 are arranged in an array under the groove 820 and between the multiple channels 821, so as to heat the filling material in the groove 820.

[0113] Figure 10 A structure schematic diagram of the first mold 81 and the second mold 82 in cooperation is shown.

[0114] In some embodiments, the second mold 82 is provided with a placing part 822, and the placing part 822 is provided with multiple protrusions 823, each of which corresponds to one of the multiple channels 821, and the multiple channels 821 are arranged on the corresponding protrusions 823.

[0115] Specifically, the placing part 822 of the second mold 82 is provided with multiple protrusions 823, which correspond to the multiple through holes 60 of the support layer 6, and when the second mold 82 is placed on the support layer 6, each protrusion 823 is inserted into the corresponding through hole 60, so as to position the support layer 6 and facilitate filling the filling material 7 in the through hole 60 of the support layer 6.

[0116] It should be noted that the above describes some embodiments of the present application. Other embodiments are within the scope of the present application as

[0117] The scope of the appended claims. In some cases, the actions or steps recited in the claims can be performed in a different order and still accomplish desirable results. Additionally, the processes depicted in the figures do not necessarily require the particular order shown, or sequential order to achieve desirable results. In certain implementations, multitasking and parallel processing can be advantageous.

[0118] Those skilled in the art will understand that the above discussion of any of the embodiments is merely exemplary and is not intended to restrict the scope of the present application (including the claims) to these examples; the above embodiments or technical features among different embodiments can also be combined, and the steps can be implemented in any order, and there are many other changes to the aspects of the embodiments of the present application as described above, which are not provided in detail for the sake of brevity.

[0119] The embodiments of the present application are intended to cover all such alternatives, modifications, and variations as fall within the broad scope of the appended claims. Accordingly, any and all such modifications, variations, or equivalents that fall within the spirit and scope of the embodiments of the present application are intended to be included within the scope of the present application.

Claims

1. A display module, characterized in that: The display module includes a bending area and a non-bending area, and includes a stacked display panel, a protective layer, a connecting layer, and a supporting layer, wherein the supporting layer includes a carbon fiber material and is arranged on a side opposite to a light emitting direction of the display panel; Wherein, the support layer comprises a plurality of through holes arranged in the bending area, and at least one of the through holes is filled with a filler; The filler is prepared by the following preparation method, which includes: providing a first mold for supporting the support layer; placing the support layer on the first mold; placing a second mold on the support layer, the second mold comprising a groove for placing a filling material and a plurality of channels arranged at the bottom of the groove, the plurality of channels corresponding one-to-one to the plurality of through holes; placing a filling material in the groove; The filling material is filled into the through-hole through the channel by a hot pressing method, so as to fill the filler in at least one of the through-holes.

2. The display module according to claim 1, wherein: The plurality of through hole arrays are arranged in the support layer.

3. The display module according to claim 1, wherein: The through hole comprises a strip-shaped hole, and the length direction of the strip-shaped hole is parallel to the axis of the bending area.

4. The display module according to claim 1, wherein: The bending region includes a first bending region that bends toward the display panel. The through hole includes a first through hole. A plurality of the first through holes are disposed in the first bending region.

5. The display module according to claim 4, wherein: The bending zone includes a second bending zone that bends toward the supporting layer, the through hole includes a second through hole, and a plurality of the second through holes are arranged in the second bending zone.

6. The display module according to claim 5, wherein: A plurality of first through-hole arrays are arranged in the first bending region, and adjacent first through-holes are arranged in a staggered manner along the bending direction of the first bending region; and / or A plurality of second through holes are arrayed in the second bending zone, and adjacent second through holes are arranged in parallel along the bending direction of the second bending zone.

7. The display module according to claim 6, wherein: The length of the first through hole is greater than that of the second through hole, the width of the first through hole is greater than that of the second through hole, and the arrangement density of the first through holes is less than that of the second through holes.

8. The display module according to claim 7, wherein: The length of the first through hole is 2-3 times the length of the second through hole, and the width of the first through hole is 1-2 times the width of the second through hole.

9. The display module according to claim 1, wherein: The connecting layer includes a base layer, and both surfaces of the base layer are provided with adhesive, which is respectively bonded to the protective layer and the supporting layer.

10. The display module according to claim 9, wherein: The base layer includes a light absorbing material.

11. A method for preparing a display module, characterized in that: The display module includes a bending area and a non-bending area, and the method includes: preparing a support layer comprising a plurality of through holes, wherein the support layer comprises a carbon fiber material, and the plurality of through holes are formed in the bending area; filling a filler in at least one of the through holes in the support layer; A protective layer is provided on a side of the display panel opposite to the light emitting direction; connecting the support layer and the protective layer using a connecting layer; Wherein, filling a filler in at least one of the through holes of the support layer comprises: providing a first mold for supporting the support layer; placing the support layer on the first mold; placing a second mold on the support layer, the second mold comprising a groove for placing a filling material and a plurality of channels arranged at the bottom of the groove, the plurality of channels corresponding one-to-one to the plurality of through holes; placing a filling material in the groove; The filling material is filled into the through-hole through the channel by a hot pressing method.

12. The method according to claim 11, characterized in that The channel includes a first opening toward the groove and a second opening away from the groove, wherein the second opening has a smaller diameter than the first opening.

13. A display device, characterized in that: A display module comprising any one of claims 1-10.

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