Supporting module for display panel, preparation method and display device

Abstract

The invention discloses a supporting module for a display panel, a preparation method and a display device. The supporting module comprises a first film layer and a second film layer, the first film layer is provided with a first face and a second face which are oppositely arranged, the first face is provided with a curved face part, the second face is a plane, and the first film layer is made of plastic or rubber; the second film layer is positioned on at least one of the following positions: one side of the first surface; and the second film layer is arranged on one side of the second surface. The supporting module has the advantage of being suitable for being attached to a large-curved-surface or full-curved-surface display device.

Description

Technical Field

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

[0002] OLED display panels are widely used in various display and electronic products because of their advantages of high contrast, fast response speed and bendable shape. Since OLED display panels are flexible, a cover glass is usually set and laminated on the light-emitting side of the display panel, and a composite support film (SCF film) with heat dissipation and support functions is laminated on the back side of the display panel (non-light-emitting side). The SCF films currently used are mostly multi-layer composite materials, generally composed of adhesive layers, foam, graphite with heat dissipation, copper foil or stainless steel mesh, etc., with certain heat dissipation capabilities and are thin, soft and can conform to curved surfaces.

[0003] With the development of current display technology, four-curved screens and full-curved screens are gradually being used in electronic products such as collections and watches. Therefore, the support module is required to have a structure with a large curvature radius and be able to support the display panel. However, as the curvature radius of the screen increases, the current support module is difficult to meet the requirements of full-curved or large-curved surface bonding, and is prone to compression at the edges to produce a large number of wrinkles. Therefore, the current support module and display device still need to be improved. Summary of the invention

[0004] The present invention aims to alleviate or even solve at least one of the above-mentioned technical problems to at least a certain extent.

[0005] In one aspect of the present application, the present application proposes a support module for a display panel. The support module includes: a first film layer, the first film layer has a first surface and a second surface that are arranged opposite to each other, the first surface has a curved surface portion, the second surface is a plane, and the first film layer is formed of plastic or rubber; a second film layer, the second film layer is located at at least one of the following positions: one side of the first surface; and one side of the second surface.

[0006] According to an example of the present application, the second film layer includes at least one of a glue layer, a foam layer and a heat dissipation metal layer.

[0007] According to an example of the present application, the adhesive layer is located on one side of the first surface, and the foam layer and the heat dissipation metal layer are located on one side of the second surface; when the support module has the foam layer and the heat dissipation metal layer, the foam layer is in contact with the second surface, and the heat dissipation metal layer is located on the side of the foam layer away from the first film layer.

[0008] According to an example of the present application, the second film layer is the adhesive layer, the thickness of the adhesive layer is 20-40 microns, and the side of the adhesive layer facing away from the first surface is sticky.

[0009] According to an example of the present application, the second film layer is a glue layer, a foam layer and a heat dissipation metal layer, the thickness of the glue layer is 20-40 microns, the side of the glue layer facing away from the first surface is sticky, the foam layer is in contact with the second surface, the heat dissipation metal layer is a copper layer, and the heat dissipation metal layer is located on the side of the foam layer facing away from the first film layer.

[0010] According to an example of the present application, the curved surface portion constitutes the first surface.

[0011] According to an example of the present application, the curved surface portion includes a first curved surface portion located at the center of the first surface, and a second curved surface portion surrounding the first curved surface portion, the curvature radius of the first curved surface portion is 100-160mm; the curvature radius of the second curved surface portion is 1-1.5mm.

[0012] According to an example of the present application, the first surface has a planar portion connected to the curved portion, and the curvature radius of the curved portion is 1-5 mm.

[0013] According to an example of the present application, the first film layer is formed of liquid silicone, PET or TPU.

[0014] According to an example of the present application, the first film layer is formed of liquid silicone, and the first film layer satisfies at least one of the following conditions:

[0015] Shore A hardness is 30-70HA;

[0016] Tensile strength greater than 4MPa;

[0017] The breaking strength is greater than 8KN / m;

[0018] The tensile elongation is greater than 250%.

[0019] According to an example of the present application, the first film layer is formed by injection molding.

[0020] According to an example of the present application, the second film layer includes an adhesive layer, the adhesive layer is formed of acrylic, and one side where the first film layer and the adhesive layer meet is roughened.

[0021] In another aspect of the present application, the present application proposes a method for preparing a support module. The method comprises: providing a first film layer, the first film layer having a first surface and a second surface arranged opposite to each other, the first surface having a curved surface portion, the second surface being a plane, the first film layer being formed by injection molding of plastic and / or rubber; providing a second film layer, and attaching the second film layer to at least one of the following positions: one side of the first surface; and one side of the second surface.

[0022] According to an example of the present application, the second film layer includes a glue layer, a foam layer and a heat dissipation metal layer, the glue layer is formed of acrylic, and the first film layer is formed of liquid silicone, and the method includes: roughening the first surface of the first film layer; and laminating the glue layer on the roughened first surface, laminating the foam layer, the heat dissipation metal layer and one side of the second surface of the first film layer, and arranging the foam layer close to the first film layer.

[0023] In another aspect of the present application, the present application provides a display device, which includes: a cover plate, which is a curved cover plate; a display panel, and the aforementioned support module, which is located on a side away from the light emitting side of the display panel, and the display panel is located between the cover plate and the support module.

[0024] According to an example of the present application, the display device is a four-curved display device, and the display device has a plurality of the support modules, and the support modules are located at the edges of the curved surfaces of the display device.

[0025] According to an example of the present application, the display device is a full-curved display device, the first film layer of the supporting module is composed of a curved surface portion, and the center of the curved surface portion coincides with the center of the full-curved display device. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0027] Figure 1 A top view of a support module of the related art is shown;

[0028] Figure 2 Shows Figure 1 A schematic cross-sectional view of the support module along the AA direction;

[0029] Figure 3 Shows Figure 1 A schematic cross-sectional view of the support module along the BB direction;

[0030] Figure 4A top view of the supporting module in the related art after full-curved surface bonding is shown;

[0031] Figure 5 A schematic diagram of the structure of a support module according to an embodiment of the present application is shown;

[0032] Figure 6 A top view of a support module according to an embodiment of the present application is shown;

[0033] Figure 7 Shows Figure 6 A schematic cross-sectional view of the support module along the AA direction;

[0034] Figure 8 Shows Figure 6 A schematic cross-sectional view of the support module along the BB direction;

[0035] Fig. 9 A schematic structural diagram of a mold for preparing a first film layer according to an embodiment of the present application is shown;

[0036] Fig.10 The corrosion diagram of one side of the second film layer after full-curved surface bonding of the support module according to one embodiment of the present application is shown;

[0037] Fig.11 The peeling adhesion test results of the support module after full-curved surface bonding according to one embodiment of the present application are shown. DETAILED DESCRIPTION

[0038] Embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be construed as limitations on the present application. Unless otherwise specified, all scientific and technological terms used in the present application have the same meanings as those commonly understood by those skilled in the art to which the present application belongs. All patents and publications related to the present application are incorporated herein by reference in their entirety. The term "comprising" or "including" is an open expression, i.e., including the content specified in the present application, but does not exclude the content of other aspects.

[0039] In the description of this application, regardless of whether the words "about" or "approximately" are used, all the numbers disclosed herein are approximate values. The value of each number may differ by less than 10% or a reasonable difference considered by those skilled in the art, such as 1%, 2%, 3%, 4% or 5%.

[0040] In the description of the present application, “plurality” means two or more.

[0041] In one aspect of the present application, the present application provides a support module for a display panel. Figure 5 The support module includes a first film layer 100 and a second film layer 200. The first film layer 100 has a first surface and a second surface that are arranged opposite to each other, the first surface has a curved surface, and the second surface is a flat surface. The first film layer 100 is formed of plastic or rubber, and the second film layer 200 is located at at least one of the following positions: one side of the first surface, and one side of the second surface. When the support module is used for a display panel with a full curved surface or a large curved surface, it has the advantages of high flatness of the back after bonding and good supporting effect.

[0042] For ease of understanding, the following is a brief explanation of the principle by which the support module can achieve the above-mentioned beneficial effects. As mentioned above, with the development of display technology, full-curved or large-curved screens, such as four-curved screens, are increasingly widely used in various electronic products and display devices. For a full-plane display module, the support module or the traditional SCF module only needs to play a certain supporting or heat dissipation role, and there is no need to consider the flatness problem after bonding. Therefore, refer to Figures 1 to 3 , the various layers of the support module 1000' in the related art are all planar structures: in order to meet the support and heat dissipation performance, the support module usually includes a glue layer 210', a foam layer 220' and a heat dissipation metal layer 230' stacked in sequence, and is attached to the back side of the display panel (the side away from the light-emitting side) through the glue layer 210'. The glue layer 210' is usually thin, the foam layer 220' plays a certain supporting role, and the heat dissipation metal layer 230' can be composed of metals with heat dissipation function such as copper foil. However, the above structures are all planar structures, that is, the cross-sections of the above layers have a consistent width. Therefore, especially when the support module 1000' includes a foam layer 220' with a certain thickness, or a rigid heat dissipation metal layer 230', when it is attached to the back side of a display panel with a large curvature, the following problems will occur at the edge. Figure 4 The wrinkles shown in .

[0043] refer to Figure 5 The present application adds a first film layer 100 having a curved surface to the supporting module of the related art. When bonding with the display panel, the curved surface is arranged toward the display panel. The second surface of the first film layer 100 is a planar structure, so it can provide a flat bonding surface for the film layer bonded to the second surface, avoiding wrinkles in the heat dissipation metal layer or other subsequently bonded, rigid film layers due to the large curvature of the display panel side.

[0044] According to an example of the present application, the first film layer 100 can be formed of a plastic or rubber material. On the one hand, the above-mentioned material can be formed by a relatively simple molding method, such as injection molding, and it is convenient to adjust the injection molding mold according to the curvature of the display panel, so as to obtain a curved portion that is closer to the display panel structure. In addition, the above-mentioned material also has a certain flexibility or resilience relative to rigid structures such as copper foil and stainless steel mesh. Therefore, on the other hand, it can also better support the flexible display panel to prevent deformation of the support module due to force on the panel side during panel bonding or use. Rigid structures such as copper foil and stainless steel mesh may cause film printing or top injuries on the panel side due to their high hardness after deformation.

[0045] According to an example of the present application, the specific structure of the second film layer 200 is not particularly limited, and those skilled in the art can select it according to the actual situation and the requirements of the display panel. Figure 6-8 According to a specific embodiment, the second film layer may include at least one of a glue layer 210 , a foam layer 220 and a heat dissipation metal layer 230 .

[0046] For example, the support module may only include the adhesive layer 210 and the first film layer 100, and the adhesive layer 210 is attached to one side of the curved surface of the first film layer 100. In this case, the support module has a relatively small thickness, and the first film layer 100 can be used to provide sufficient support for the display panel. The support module is suitable for display panels with low heat dissipation requirements.

[0047] Alternatively, the support module may include a first film layer 100 and a heat dissipation metal layer 230, and the heat dissipation metal layer 230 is attached to one side of the second surface of the first film layer 100. The support module has good heat dissipation performance. An adhesive material may be provided on the first surface (the curved surface side) of the first film layer 100 to achieve the attachment of the support module and the display panel. The heat dissipation metal layer 230 and the first film layer 100 may also be bonded and fixed.

[0048] Alternatively, the support module may also include a first film layer 100, a foam layer 220, and a heat dissipation metal layer 230. Since the foam layer 220 has a certain thickness and the heat dissipation metal layer 230 has a strong rigidity, the foam layer 220 and the heat dissipation metal layer 230 may both be located on one side of the second surface of the first film layer 100. The second surface may be composed of a planar structure, and thus has good flatness. Thus, the curved portion of the first surface may be used to achieve bonding with a display panel with a large curvature, and ensure that one side of the foam layer 220 and the heat dissipation metal layer 230 has good flatness.

[0049] According to an example of this application, reference Figure 8, the second film layer includes a glue layer 210, a foam layer 220 and a heat dissipation metal layer 230. The glue layer 210 is located on one side of the first surface of the first film layer 100. The side of the glue layer 210 facing away from the first surface may be sticky, and is used to attach the support module to the display panel side. The thickness of the glue layer 210 is not particularly limited, for example, it can be 20-40 microns, for example, it can be 20 microns, 25 microns, 30 microns, 35 microns or 40 microns. In some examples, the glue layer 210 can be formed by acrylic materials. The thickness of the foam layer can be 80-120 microns, for example, it can be 80 microns, 100 microns, 110 microns or 120 microns. The heat dissipation metal layer can be made of copper foil or stainless steel mesh, and the thickness can be 20-40 microns, for example, it can be 20 microns, 25 microns, 30 microns, 35 microns or 40 microns.

[0050] The foam layer 220 can be arranged in contact with the second surface of the first film layer 100. The foam layer 220 can improve the support performance of the support module 1000. The heat dissipation metal layer 230 can be located on the side of the foam layer 220 away from the first film layer 100, and is used to improve the heat dissipation performance of the support module 1000. The heat dissipation metal layer 230 can be a copper foil or a stainless steel mesh. When the support module has both the foam layer 220 and the heat dissipation metal layer 230, both sides of the foam layer 220 can have a sticky adhesive material to achieve adhesion and fixation between the film layers.

[0051] According to an example of the present application, the support module 1000 may be a support module suitable for a full-curved screen. The full-curved screen may include a display screen for products such as electronic watches, and the display panel is bonded to the full-curved glass to form a full-curved screen with a large curvature. At this time, the first film layer 100 of the support module 1000 may have a first surface composed of a curved portion. The radius of curvature of the curved portion is 100-160mm, for example, it may be 100mm, 110mm, 120mm, 130mm, 140mm, 150mm or 160mm. Since the first film layer 100 relies on the planar structure of the second surface to achieve the bonding of subsequent film layers, the curvature of the first surface composed of the curved portion can be large without worrying about causing the heat dissipation metal layer and other structures to wrinkle after bonding.

[0052] According to an example of the present application, when the support module 1000 is used for the display screen of a small electronic product such as a watch, the first surface of the first film layer 100 can be composed of a curved surface portion, and the curved surface portion includes a first curved surface portion located at the center of the first surface, and a second curved surface portion surrounding the first curved surface portion. In other words, the central area of ​​the first surface can be composed of a first curved surface portion with a larger radius of curvature, and the edge of the first curved surface portion is connected to the second curved surface portion, and the second curved surface portion can have a relatively small radius of curvature. The radius of curvature of the first curved surface portion is 100-160mm, and the radius of curvature of the second curved surface portion is 1-1.5mm, for example, 1mm, 1.2mm, 1.3mm or 1.5mm. Specifically, the first curved surface portion can have a radius of curvature of 160mm, and the second curved surface portion can have a radius of curvature of 1.2mm.

[0053] According to an example of the present application, the first surface has a flat portion connected to the curved portion, and the radius of curvature of the curved portion is 1-5mm. In this embodiment, the support module 1000 can be used to fit with a four-curved display screen. For example, the display panel can be attached to a cover glass with four curved sides and a flat center to form a four-curved screen. Electronic devices using the four-curved screen may include but are not limited to mobile phones, electronic watches, etc. The sides and four vertex corners (or R angles) of the four-curved screen have a curved structure, and the radius of curvature of the curved structure at the side can be larger. Therefore, in order to better fit with the four-curved screen, the first surface of the first film layer 100 of the support module may have a flat portion connected to the curved portion, and the radius of curvature of the curved portion may be larger, for example, 1mm, 1.3mm, 1.5mm, 2mm, 2.5mm, 3mm, 3.5mm, 4mm, 4.5mm or 5mm. The curvature radii of the four sides of the four-curved screen can be the same or different. For example, two relatively long edges can have the same curvature radius, and two relatively short edges can have the same curvature radius, so as to form a symmetrical structure. The curvature radii of the curved surfaces at the four vertex angles (R angles) can be determined according to the curvature radii of the curved surfaces of the two connected edges, so as to smoothly connect the edges of the two curved surfaces.

[0054] In other examples, the first surface may also be composed of only the curved surface, and the support module in this case can also be used for a four-curved screen. The difference is that the support module in this case can only be attached to the curved side of the four-curved module. If the flat surface in the center of the screen needs to use a support module, it can also be used as shown in the following example. Figure 1-3 The structure shown is sufficient. At this time, the curved surface of the first surface can be an arc-shaped structure with only one quarter or one half of the circumference.

[0055] It is understood by those skilled in the art that the first surface of the support module 1000 is used to fit the display panel in the display device, so the curved surface of the first surface matches the curvature of the panel of the display device obtained by the final curved surface. In other words, the curvature of the curved surface can be consistent with the curvature of the display device. In this application, the term "consistent" should be understood in a broad sense, that is, the curvature of the first surface and the curvature of the display device can have a tolerance that can be allowed for fitting, for example, the curvatures of the two can differ by 1%-5%.

[0056] According to an example of the present application, the first film layer 100 is formed of liquid silicone, PET (Polyethyleneterephthalate) or TPU (Thermoplastic Polyurethane). As mentioned above, the above structure has good support or resilience, and can provide a certain buffer support for the display panel during lamination or use, avoiding deformation of the rigid film layer structure under the first film layer 100, thereby alleviating or even solving the problem of film printing or top damage to the display panel. In some specific examples, the first film layer 100 can be formed of liquid silicone.

[0057] According to an example of the present application, the first film layer 100 formed by liquid silicone can meet at least one of the following conditions: the Shore A hardness is 30-70HA; the tensile strength is greater than 4MPa; the breaking strength is greater than 8KN / m; the tensile elongation is greater than 250%. For example, the Shore A hardness can be 30HA, 45HA, 50HA, 55HA, 65HA or 70HA, and the tensile strength can be greater than 4MPa, greater than 5MPa, greater than 6MPa or greater than 6.5MPa. The breaking strength can be greater than 8KN / m, for example, greater than 8.5KN / m, greater than 9KN / m, or greater than 10KN / m. The tensile elongation can be greater than 250%, for example, greater than 260%, greater than 270%, greater than 280% or greater than 285%. The inventors found that when the first film layer 100 formed by liquid silicone meets the above requirements, it can provide better support and resilience. Therefore, it is beneficial to fully alleviate the effect of the force on the display panel side on other rigid film layers below the first film layer 100 while achieving adhesion with the display module, thereby avoiding film printing or damaging the display panel. The inventors found that excessive elasticity of the first film layer 100 may also cause adverse effects, so the first film layer 100 formed by liquid silicone preferably meets all the above conditions.

[0058] In some embodiments, the support module may be opaque. For example, a glue layer 210 with a certain color may be used, and pigments may be added to liquid silicone to form a first film layer 100 with a certain color and low transmittance. This is conducive to shielding light and preventing the transparent support module from affecting the display effect.

[0059] According to an example of the present application, the first film layer 100 may be formed by injection molding. By injection molding, the shape of the first surface of the first film layer 100 can be adjusted more flexibly, thereby obtaining a support module that can be applied to various types of display panels.

[0060] In another aspect of the present application, the present application proposes a method for preparing a support module. The method includes: providing a first film layer, and providing a second film layer and bonding it to the first film layer. Specifically, the first film layer has a first surface and a second surface that are relatively arranged, the first surface has a curved surface portion, the second surface is a plane, and the first film layer is formed by injection molding of plastic and / or rubber. Bonding the second film layer to the first film layer can be bonding the second film layer to at least one of the following positions: one side of the first surface; and one side of the second surface. The support module prepared by this method can be the aforementioned support module. Therefore, the support module obtained by this method has all the characteristics and advantages of the aforementioned support module, which will not be repeated here. This method also has the advantages of simple process and convenient adjustment of the curvature of the first film layer.

[0061] According to an example of the present application, the second film layer 200 may include a glue layer 210, a foam layer 220 and a heat dissipation metal layer 230. The glue layer 210 is formed of acrylic, and the first film layer 100 is formed of liquid silicone. The method also includes: roughening the first surface of the first film layer 100, and laminating the glue layer 210 on the first surface that has been roughened. And the step of laminating the foam layer 220, the heat dissipation metal layer 230 and the second surface of the first film layer 100, and placing the foam layer 220 close to the first film layer 100. In this step, the order of laminating the foam layer 220 and the heat dissipation metal layer 230 is not particularly limited. For example, the foam layer 220 and the heat dissipation metal layer 230 may be laminated first, and then the two may be laminated through the foam layer 220 and the second surface of the first film layer 100. Alternatively, the foam layer 220 may be laminated to the second surface of the first film layer 100, and then the heat dissipation metal layer 230 may be laminated.

[0062] In a specific embodiment of the present application, the first film layer 100 may be formed by injection molding using liquid silicone material. Fig. 9, injection molding can be performed using a mold 110 connected to the glue inlet 20 and the glue outlet 10. In some examples, liquid silicone is injected into the mold 110 through the glue inlet 20, so that the liquid silicone material is fully filled in the mold 110 and overflows from the glue outlet 10. After molding, the excess material remaining in the glue inlet 20 and the glue outlet 10 can be removed by cutting. In this way, the aforementioned first film layer can be easily formed.

[0063] According to an example of the present application, the second film layer 200 may include an adhesive layer 210. The adhesive layer 210 may be formed of acrylic. The adhesion between the adhesive layer formed by acrylic and the first film layer 100 formed by liquid silicone is weak, so it is easy to cause the first film layer 100 to debond. When the acrylic material is used to form the adhesive layer and the first film layer 100 formed by liquid silicone is bonded, the side where the first film layer 100 and the adhesive layer meet can also be roughened before bonding. This can enhance the adhesion between the first film layer 100 and the adhesive layer. The specific roughening process is not particularly limited, and those skilled in the art can select it according to actual needs. For example, the surface of the silicone can be treated with parylene. In this way, the adhesion between the liquid silicone material and the acrylic adhesive layer can be increased, and the first film layer with a certain thickness and quality can be prevented from peeling off, falling off, and other defects during use.

[0064] In another aspect of the present application, the present application proposes a display device. The display device includes: a cover plate, which is a curved cover plate. A display panel, and the aforementioned support module, wherein the support module is located on the side away from the light-emitting side of the display panel, and the display panel is located between the cover plate and the support module. The display device has all the features and advantages of the aforementioned support module, which will not be repeated here. In general, the display device has at least one of the advantages of good supporting performance of the support module, a flat back without wrinkles after fitting, a large curvature of the display device, and can achieve a large curvature display.

[0065] In the present application, the specific shape and material of the cover plate are not particularly limited. For example, the cover plate can be formed of materials such as ultra-thin glass, transparent organic matter, sapphire, etc. The cover plate can be a full-curved cover plate, or it can be a four-curved cover plate. The cover plate has curved side portions at the four edges, and the main body in the middle can be a plane or a curved surface.

[0066] According to an example of the present application, the display device is a four-curved display device, and the display device has a plurality of the support modules, and the support modules are located at the edge of the curved surface of the display device. As mentioned above, the first film layer 100 of the support module at this time may have a larger radius of curvature, and the support module may be located closer to the edge of the display device. The center position of the display device may be a planar structure, and a support module may or may not be provided at the planar structure. When a support module needs to be provided, the support module may have a fully planar structure. Alternatively, the center position of the display device may also be a curved structure, and a support module having a first surface of the first film layer 100 consisting of a curved portion may be provided there.

[0067] Alternatively, according to an example of the present application, the display device is a full-curved display device, the first film layer 100 of the support module is composed of a curved surface portion, and the center of the curved surface portion coincides with the center of the full-curved display device. Thus, the support module can be used to better support / dissipate heat for the full-curved display device.

[0068] The methods used in the following examples are conventional methods unless otherwise specified, and the reagents used are commercially available unless otherwise specified.

[0069] Preparation of support module

[0070] The first film layer: Liquid silicone provided by Xin'an Tianyu Company is used and formed by injection molding. The first surface of the first film layer is composed of a curved surface with a curvature radius of 150-160mm; the second surface is a full-plane structure.

[0071] The second film layer: an acrylic material with a thickness of 25-35 microns is used to form a glue layer; the foam containing glue forms a foam layer with a thickness of 80-120 microns; and the copper foil forms a heat dissipation metal layer with a thickness of 20-40 microns.

[0072] The second film layer is bonded and fixed to the first film layer by laminating, and the first surface of the first film layer is treated with parylene before bonding and fixing. The structure of the support module formed is as follows Figure 7 , 8 shown.

[0073] The performance of the first film layer formed by repeating the above process for many times was tested, and the average test results are shown in Table 1 below:

[0074] Table 1

[0075] Test items unit Test Results proportion <![CDATA[g / cm 3 ]]> 1.0 hardness Shaw A / HA 52 Tensile Strength MPa ＞4 Tensile elongation ％ ＞250 Tear Strength KN / m ＞8 Shrinkage ％ 2.3

[0076] In Table 1 above, specific gravity and hardness are measured by standard methods in the field; tensile strength, tensile elongation and tear strength are measured by the methods in GB1040.1-2006 and GB / T 528; and shrinkage is measured by the volume method.

[0077] The above test results show that the first film layer prepared according to the embodiment of the present invention has moderate resilience and good mechanical strength, and can meet the relevant requirements of the support module.

[0078] The structure of the heat dissipation module side of the support module provided in this application is as follows Fig.10 As shown. Since the first film layer has a curved surface, the back side (heat dissipation metal layer) of the support module after the heat dissipation metal layer (copper foil) is attached is flat and wrinkle-free. Fig.11 The place where the support module peels off is the foam layer, and the first film layer formed by the glue layer and the liquid silicone is well bonded without peeling.

[0079] Those skilled in the art will appreciate that, in the above method of a specific embodiment, the order in which the steps are written does not imply a strict execution order and does not constitute any limitation on the implementation process. The specific execution order of the steps should be determined by their functions and possible internal logic.

[0080] It should be noted that the above description of the various embodiments tends to emphasize the differences between the various embodiments, and the same or similar aspects can be referenced to each other. For the sake of brevity, they will not be repeated herein.

[0081] In the description of the present application, a first feature being “on” or “under” a second feature may include that the first and second features are directly in contact with each other, or may include that the first and second features are not in direct contact with each other but are in contact with each other via another feature therebetween.

[0082] In the description of the present application, “above”, “over” and “above” a first feature to a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0083] In the description of this specification, the description with reference to the terms "one embodiment", "another embodiment", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment are included in at least one embodiment of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

[0084] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A support module for a display panel, characterized in that: include: A first film layer, wherein the first film layer has a first surface and a second surface that are oppositely disposed, the first surface has a curved surface portion, the second surface is a flat surface, and the first film layer is formed of plastic or rubber; A second film layer, wherein the second film layer is located at at least one of the following positions: a side of the first surface; and one side of the second surface.

2. The support module according to claim 1, characterized in that: The second film layer includes at least one of a glue layer, a foam layer and a heat dissipation metal layer.

3. The support module according to claim 2, characterized in that: The adhesive layer is located on one side of the first surface, and the foam layer and the heat dissipation metal layer are located on one side of the second surface; When the supporting module comprises the foam layer and the heat dissipation metal layer, the foam layer is in contact with the second surface, and the heat dissipation metal layer is located on a side of the foam layer away from the first film layer.

4. The support module according to claim 3, characterized in that: The second film layer is the adhesive layer, the thickness of the adhesive layer is 20-40 microns, and the side of the adhesive layer facing away from the first surface is sticky.

5. The support module according to claim 3, characterized in that: The second film layer is a glue layer, a foam layer and a heat dissipation metal layer. The thickness of the adhesive layer is 20-40 microns, and the side of the adhesive layer facing away from the first surface is sticky. The foam layer is in contact with the second surface, the heat dissipation metal layer is a copper layer, and the heat dissipation metal layer is located on a side of the foam layer away from the first film layer.

6. The supporting module according to claim 1, characterized in that: The curved surface portion constitutes the first surface.

7. The supporting module according to claim 6, characterized in that: The curved surface portion includes a first curved surface portion located at the center of the first surface, and a second curved surface portion surrounding the first curved surface portion. The curvature radius of the first curved surface portion is 100-160 mm; The curvature radius of the second curved surface portion is 1-1.5 mm.

8. The support module according to claim 1, characterized in that: The first surface has a planar portion connected to the curved portion, and the curvature radius of the curved portion is 1-5 mm.

9. The support module according to any one of claims 1 to 8, characterized in that: The first film layer is formed of liquid silicone, PET or TPU.

10. The supporting module according to claim 9, characterized in that: The first film layer is formed of liquid silicone, and the first film layer satisfies at least one of the following conditions: Shore A hardness is 30-70HA; Tensile strength greater than 4MPa; The breaking strength is greater than 8KN / m; The tensile elongation is greater than 250%.

11. The support module according to claim 10, characterized in that: The first film layer is formed by injection molding.

12. The support module according to claim 10, characterized in that: The second film layer includes a glue layer, the glue layer is formed of acrylic, and one side where the first film layer and the glue layer meet is roughened.

13. A method for preparing a support module, characterized in that: include: Providing a first film layer, wherein the first film layer has a first surface and a second surface arranged opposite to each other, the first surface has a curved surface portion, the second surface is a plane, and the first film layer is formed by injection molding of plastic and / or rubber; A second film layer is provided, and the second film layer is attached to at least one of the following positions: a side of the first surface; and one side of the second surface.

14. The method according to claim 13, characterized in that The second film layer includes a glue layer, a foam layer and a heat dissipation metal layer, the glue layer is formed of acrylic, and the first film layer is formed of liquid silicone. The method includes: performing a roughening process on the first surface of the first film layer; and The adhesive layer is laminated on the roughened first surface, the foam layer, the heat dissipation metal layer and one side of the second surface of the first film layer are laminated, and the foam layer is arranged close to the first film layer.

15. A display device, characterized in that: include: A cover plate, wherein the cover plate is a curved cover plate; A display panel, and a supporting module according to any one of claims 1 to 12, The support module is located at a side away from the light emitting side of the display panel, and the display panel is located between the cover plate and the support module.

16. The display device according to claim 15, characterized in that: The display device is a four-curved display device, and the display device has a plurality of the supporting modules, and the supporting modules are located at the edges of the curved surfaces of the display device.

17. The display device according to claim 15, characterized in that: The display device is a full-curved display device, the first film layer of the supporting module is composed of a curved surface portion, and the center of the curved surface portion coincides with the center of the full-curved display device.

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