A display module and a display device

Abstract

This application discloses a display module and display device, relating to the field of display technology. These devices can improve the problem of film peeling in the curved area of a display module, thereby increasing the reliability of the display module and preventing a shortened lifespan of the display product. A display module comprises: a display panel comprising a flat area and a shaped area, wherein the display side of the display panel in the shaped area has a curved surface; and a cover plate disposed on the display side of the display panel, wherein the Young's modulus of the cover plate corresponding to the flat area is greater than the Young's modulus of the cover plate corresponding to the shaped area.

Description

Technical Field

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

[0002] With the advancement of display technology, demand for foldable, expandable, full-screen, and narrow-frame displays is increasing, aiming to enhance the aesthetics of display products and meet the needs for custom-shaped displays. In flexible display modules, the bending portion requires all film layers of the display module to bend.

[0003] However, when various film materials are bent, the film material has a large modulus and a high rebound force. The film material has a high tendency to rebound and recover at the bent position, which makes it easy for the film layer to peel off, causing the reliability of the display module to fail and greatly shortening the service life of the display product. Summary of the Invention

[0004] The embodiments of the present application provide a display module and a display device, which can improve the problem of film peeling occurring in the bending area of the display module, improve the reliability of the display module, and thus avoid shortening the life of the display product.

[0005] According to a first aspect of an embodiment of the present application, a display module is provided, comprising:

[0006] The display panel comprises a flat area and a special-shaped area, wherein the display side of the display panel in the special-shaped area is a curved surface;

[0007] A cover plate is provided on the display side of the display panel, and the Young's modulus of the cover plate corresponding to the planar area is greater than the Young's modulus of the cover plate corresponding to the special-shaped area.

[0008] In some embodiments, the display module further includes:

[0009] a supporting film, disposed on a side of the display panel away from the cover plate;

[0010] The Young's modulus of the support film corresponding to the planar area is greater than the Young's modulus of the support film corresponding to the irregularly shaped area.

[0011] In some embodiments, the display module further includes:

[0012] a support member, disposed on a side of the support film away from the display panel;

[0013] The Young's modulus of the support member corresponding to the planar area is greater than the Young's modulus of the support member corresponding to the special-shaped area.

[0014] In some embodiments, at least one of the cover plate corresponding to the special-shaped area, the support film corresponding to the special-shaped area, and the support member corresponding to the special-shaped area has a hollow portion and / or a groove portion, the hollow portion is used to penetrate the corresponding film layer, and the groove portion is used to locally reduce the thickness of the film layer.

[0015] In some embodiments, the proportion of the total area of the hollow portion to the total area of the shaped region is positively correlated with the Young's modulus of the material used to prepare the film layer corresponding to the shaped region; and / or,

[0016] The proportion of the total area of the groove portions in the total area of the profiled region is positively correlated with the Young's modulus of the material of the film layer corresponding to the profiled region.

[0017] In some embodiments, the planar region includes a first planar region and a second planar region, wherein the second planar region is located between the first planar region and the shaped region;

[0018] At least one of the cover plate corresponding to the second planar area, the support film corresponding to the second planar area, and the support member corresponding to the second planar area has a hollow portion and / or a groove portion.

[0019] In some embodiments, the distance between the boundary between the second planar area and the irregularly shaped area and the hollow portion is less than or equal to 200 μm; and / or,

[0020] The distance between the boundary between the second planar area and the irregularly shaped area and the groove portion is less than or equal to 200 μm.

[0021] In some embodiments, the material used to prepare the cover plate corresponding to the planar area is the same as the material used to prepare the cover plate corresponding to the profiled area; and / or,

[0022] The material used to prepare the support film corresponding to the planar area is the same as the material used to prepare the support film corresponding to the profiled area; and / or,

[0023] The material used to prepare the support member corresponding to the planar area is the same as the material used to prepare the support member corresponding to the profiled area; and / or,

[0024] The Young's modulus of the material used to prepare the cover plate is in the range of 5 GPa to 70 GPa; and / or,

[0025] The Young's modulus of the material used to prepare the support membrane is in the range of 3 GPa to 6 GPa; and / or,

[0026] The Young's modulus of the material used to prepare the support member is greater than 30 GPa.

[0027] In some embodiments, the cover plate corresponding to the irregularly shaped area is used to be pre-shaped based on the shape of the display panel in the irregularly shaped area; and / or,

[0028] The supporting film corresponding to the irregularly shaped area is used to be pre-shaped based on the shape of the display panel in the irregularly shaped area; and / or,

[0029] The support member corresponding to the irregularly shaped area is used for pre-shaping based on the shape of the display panel in the irregularly shaped area.

[0030] In some embodiments, the material used to prepare the cover plate corresponding to the planar area is different from the material used to prepare the cover plate corresponding to the profiled area; and / or,

[0031] The material used to prepare the support film corresponding to the planar area is different from the material used to prepare the support film corresponding to the profiled area; and / or,

[0032] The material used to prepare the support member corresponding to the planar area is different from the material used to prepare the support member corresponding to the profiled area.

[0033] In some embodiments, the Young's modulus of the material used to prepare the cover plate corresponding to the planar area is greater than the Young's modulus of the material used to prepare the cover plate corresponding to the profiled area; and / or,

[0034] The Young's modulus of the material used to prepare the support film corresponding to the planar area is greater than the Young's modulus of the material used to prepare the support film corresponding to the profiled area; and / or,

[0035] The Young's modulus of the material used to prepare the support member corresponding to the planar area is greater than the Young's modulus of the material used to prepare the support member corresponding to the profiled area; and / or,

[0036] The Young's modulus of the material used to prepare the cover plate corresponding to the special-shaped area is in the range of 40 MPa to 70 GPa; and / or,

[0037] The Young's modulus of the material used to prepare the cover plate corresponding to the planar area is in the range of 5 GPa to 70 GPa; and / or,

[0038] The Young's modulus of the material used to prepare the support film corresponding to the irregularly shaped area is in the range of 30 MPa to 200 MPa; and / or,

[0039] The Young's modulus of the material used to prepare the support film corresponding to the planar area is in a range of 3 GPa to 6 GPa.

[0040] In some embodiments, the display module further includes:

[0041] Optical adhesive, disposed between the display panel and the cover plate;

[0042] The cover plate corresponding to the irregularly shaped area includes a first concave portion, and the optical adhesive corresponding to the irregularly shaped area includes a first convex portion, and the first concave portion and the first convex portion are fitted and matched with each other.

[0043] In some embodiments, the planar region includes a first planar region and a second planar region, wherein the second planar region is located between the first planar region and the shaped region;

[0044] The cover plate corresponding to the second plane area includes a second concave portion, and the optical adhesive corresponding to the second plane area includes a second convex portion, and the second concave portion and the second convex portion are embedded and matched with each other.

[0045] In some embodiments, in a direction perpendicular to the cover plate, a size of the first recess is 1 / 3 to 1 / 2 of a thickness of the cover plate corresponding to the plane area; and / or,

[0046] In a direction perpendicular to the cover plate, a size of the second recess is 1 / 3 to 1 / 2 of a thickness of the cover plate corresponding to the plane area.

[0047] In some embodiments, the cover plate corresponding to the planar area and the cover plate corresponding to the irregularly shaped area are both prepared by a coating process, and the interface between the cover plate corresponding to the planar area and the cover plate corresponding to the irregularly shaped area is directly bonded; or,

[0048] The cover plate corresponding to the planar area and the cover plate corresponding to the special-shaped area are connected via a first connecting structure; and / or,

[0049] A first connection layer is provided on at least one side of the cover plate, wherein the orthographic projection of the first connection layer on the display panel covers the orthographic projection of the boundary between the planar area and the irregularly shaped area on the display panel; and / or,

[0050] The support film corresponding to the planar area and the support film corresponding to the irregularly shaped area are both prepared by a coating process, and the interface between the support film corresponding to the planar area and the support film corresponding to the irregularly shaped area is directly bonded; or,

[0051] The supporting film corresponding to the planar area and the supporting film corresponding to the profiled area are connected via a second connecting structure; and / or,

[0052] A second connection layer is provided on at least one side of the support film, and an orthographic projection of the second connection layer on the display panel covers an orthographic projection of a boundary between the planar area and the irregularly shaped area on the display panel.

[0053] In some embodiments, the light transmittance of the first connection structure and / or the second connection structure is greater than 91%, and the haze is less than 0.1; and / or,

[0054] The light transmittance of the first connecting layer and / or the second connecting layer is greater than 91%, and the haze is less than 0.1; and / or,

[0055] The first connecting structure includes at least one of polyimide, epoxy resin and polyurethane, the second connecting structure includes at least one of polyimide, epoxy resin and polyurethane, the first connecting layer includes at least one of polyimide, epoxy resin and polyurethane, and the second connecting layer includes at least one of polyimide, epoxy resin and polyurethane.

[0056] According to a second aspect of the embodiments of the present application, a display device is provided, including:

[0057] The display module as described in the first aspect.

[0058] The display module and display device provided by the embodiments of the present application are configured such that the Young's modulus of the cover plate in the flat area is smaller than that of the cover plate in the irregularly shaped area. Reducing the Young's modulus of the cover plate in the irregularly shaped area can reduce the resilience of the cover plate in the irregularly shaped area, making it difficult for the irregularly shaped cover plate in the irregularly shaped area to recover, making it easy for the cover plate to maintain its shape in the irregularly shaped area, and preventing the cover plate from peeling off from the display panel. This ensures the reliability of the display module film material and avoids reducing the service life of the display module. BRIEF DESCRIPTION OF THE DRAWINGS

[0059] Figure 1 A schematic structural diagram of a display module provided in an embodiment of the present application;

[0060] Figure 2 A schematic diagram showing the positions of the flat area and the special-shaped area of a display module provided in an embodiment of the present application;

[0061] Figure 3 A schematic diagram showing the positions of the flat area and the special-shaped area of another display module provided in an embodiment of the present application;

[0062] Figure 4 A schematic structural diagram of another display module provided in an embodiment of the present application;

[0063] Figure 5 A schematic diagram of a partial structure of a cover plate provided in an embodiment of the present application;

[0064] Figure 6 A partial cross-sectional schematic diagram of another cover plate provided in an embodiment of the present application;

[0065] Figure 7A partial cross-sectional schematic diagram of another cover plate provided in an embodiment of the present application;

[0066] Figure 8 A schematic structural diagram of another display module provided in an embodiment of the present application;

[0067] Figure 9 A schematic structural diagram of another display module provided in an embodiment of the present application;

[0068] Figure 10 A schematic structural diagram of a display module provided in an embodiment of the present application;

[0069] Figure 11 A schematic structural diagram of another display module provided in an embodiment of the present application;

[0070] Figure 12 A schematic structural diagram of another display module provided in an embodiment of the present application;

[0071] Figure 13 A schematic structural diagram of another display module provided in an embodiment of the present application;

[0072] Figure 14 A schematic structural diagram of a display device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0073] In order to better understand the technical solutions provided by the embodiments of this specification, the technical solutions of the embodiments of this specification are described in detail below through the accompanying drawings and specific embodiments. It should be understood that the embodiments of this specification and the specific features in the embodiments are detailed descriptions of the technical solutions of the embodiments of this specification, rather than limitations on the technical solutions of this specification. In the absence of conflict, the embodiments of this specification and the technical features in the embodiments can be combined with each other.

[0074] In this article, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also include elements inherent to such process, method, article or equipment. In the absence of further restrictions, the elements defined by the statement "comprising a ..." do not exclude the presence of other identical elements in the process, method, article or equipment comprising the elements. The term "two or more" includes two or more than two cases.

[0075] Currently, with the development of display technology, in order to improve the appearance of display products and meet the demand for special-shaped displays, the demand for display screens with functions such as foldable, expandable, full-screen, and narrow bezels, while adapting to the overall appearance of the display product, is increasing. In a bendable display module, the bending part requires all film layers of the display module to be bent. However, when bending multiple film materials, the film material has a large modulus and high rebound force. The film material has a high tendency to rebound and recover at the bent position, which makes the film layer peeling easily occur, causing the reliability of the display module to fail and greatly shortening the service life of the display product.

[0076] In view of this, the embodiments of the present application provide a display module and a display device, which can improve the problem of film peeling occurring in the bending area of the display module, improve the reliability of the display module, and thus avoid shortening the life of the display product.

[0077] In a first aspect of an embodiment of the present application, a display module is provided. Figure 1 This is a schematic structural diagram of a display module provided in an embodiment of the present application. Figure 1 As shown, the display module provided by the embodiment of the present application includes: a display panel 100 and a cover plate, the cover plate 200 is arranged on the display side Display of the display panel 100, the display side Display of the display panel 100 can be the light-emitting side of the display panel 100, and the light emitted by the display panel 100 is used to realize picture display. The cover plate 200 can play a role in protecting the display panel 100, and the cover plate 200 can have a certain strength to resist external stress and prevent the display panel 100 from being damaged by external forces. The display panel 100 may include a flat area 110 and a special-shaped area 120, and the surface of the display side Display of the display panel 100 in the special-shaped area 120 is a curved surface. The Young's modulus of the cover plate 200 corresponding to the flat area 110 is greater than the Young's modulus of the cover plate 200 corresponding to the special-shaped area 120. Young's modulus is a physical quantity that describes the ability of a solid material to resist deformation, also called tensile modulus.

[0078] For example, the profiled area 120 may be a bent area of the display panel, or a curled area. The present embodiment does not specifically limit the bending or curving method of the profiled area 120. Therefore, the display side surface of the display panel in the profiled area 120 is a curved surface. The flat area 110 may be an area of the display panel 100 that does not bend. Figure 2 A schematic diagram of the positions of the planar area and the special-shaped area of a display module provided in an embodiment of the present application. Figure 3 This is a schematic diagram of the positions of the flat area and the special-shaped area of another display module provided in an embodiment of the present application. Figure 2 As shown, the special-shaped area 120 is arranged around the display panel, and the special-shaped area 120 surrounds the flat area. Figure 3As shown, the special-shaped areas 120 are disposed on two opposite sides of the display panel. Figure 2 and Figure 3 The size relationship between the shaped area 120 and the plane area 110 shown is only schematic. The size of the shaped area 120 can be appropriately adjusted according to the specific shaped design requirements, and is not specifically limited in the embodiment of the present application. Figure 1 The illustrated special-shaped area 120 is bent toward the side away from the display side Display, which is only for illustration and is not a specific limitation of the present application.

[0079] It should be noted that the display panel 100 can be a flexible display panel or a rigid display panel. In the case of a rigid display panel, the curvature of the profiled area 120 can be relatively small and within the curvature limit of the rigid display panel.

[0080] It should be noted that the display panel, cover plate, and other film layers corresponding to the bent, curved, or curled areas will cause the corresponding film material to change its original shape. The film material's Young's modulus will give the film material stress that restores its original shape. Under the influence of the film material's Young's modulus, it is easy to cause delamination between the bent, curved, or curled film material, resulting in failure of the film material structure of the display module and even failure of the display module's reliability, resulting in poor display. The larger the Young's modulus, the easier it is for the shaped film material to return to its original shape, that is, the greater the rebound force. Conversely, the smaller the Young's modulus, the less likely the shaped film material is to rebound from deformation, and the easier it is to fix and maintain the deformed shape.

[0081] In response to the above problems, the display module provided in the embodiment of the present application sets the Young's modulus of the cover plate 200 in the flat area 110 to be smaller than the Young's modulus of the cover plate 200 in the irregular area, thereby reducing the Young's modulus of the cover plate 200 in the irregular area 120, thereby reducing the resilience of the cover plate 200 in the irregular area 120, and making it difficult for the irregular setting of the cover plate in the irregular area 120 to recover. This makes it easy for the cover plate 200 to maintain its shape in the irregular area 120, and makes it difficult for the cover plate 200 to peel off from the display panel 100. This ensures the reliability of the display module film material and avoids reducing the service life of the display module.

[0082] In some embodiments, Figure 4 This is a schematic structural diagram of another display module provided in an embodiment of the present application. Figure 4As shown, the display module provided in the embodiment of the present application further includes: a support film 300 and a support member 400. The support film 300 is disposed on the side of the display panel 100 away from the cover plate 200; the support member 400 is disposed on the side of the support film 300 away from the display panel 100. The display module may also include a polarizer 500 and an optical adhesive 600. The polarizer 500 is disposed between the display panel 100 and the cover plate 200, and the optical adhesive 600 is disposed between the polarizer 500 and the cover plate 200. The optical adhesive 600 can serve to bond the cover plate 200 and the polarizer 500, and both the support film 300 and the support member 400 can support the display panel 100.

[0083] In some embodiments, the Young's modulus of the support film 300 corresponding to the planar region 110 is greater than the Young's modulus of the support film 300 corresponding to the profiled region 120. By setting the Young's modulus of the support film 300 in the planar region 110 to be smaller than that in the profiled region, the Young's modulus of the support film 300 in the profiled region 120 can be reduced. This can reduce the resilience of the support film 300 in the profiled region 120, making it difficult for the profiled configuration of the support film 300 in the profiled region 120 to recover, allowing the support film 300 to easily maintain its shape in the profiled region 120. This reduces the likelihood of the support film 300 peeling off from the display panel 100 or the support member 400, thereby ensuring the reliability of the display module film material and preventing a reduction in the service life of the display module.

[0084] In some embodiments, the Young's modulus of the support member 400 corresponding to the planar region 110 is greater than the Young's modulus of the support member 400 corresponding to the profiled region 120. By setting the Young's modulus of the support member 400 in the planar region 110 to be smaller than that of the support member 400 in the profiled region, the Young's modulus of the support member 400 in the profiled region 120 can be reduced. This can reduce the resilience of the support member 400 in the profiled region 120, making it difficult for the support member 400 in the profiled region 120 to recover from its profiled configuration. This allows the support member 400 to maintain its shape in the profiled region 120, making it less likely for the support member 400 to separate from the support film 300. This ensures the reliability of the display module film material and avoids reducing the service life of the display module.

[0085] In some embodiments, at least one of the cover plate 200 corresponding to the shaped area 120, the support film 300 corresponding to the shaped area 120, and the support member 400 corresponding to the shaped area 120 has a hollow portion. The hollow portion can penetrate the corresponding film layer, which can be the cover plate 200, the support film 300, or the support member 400. The provision of the hollow portion can reduce the Young's modulus of the film layer of the shaped area 120. In other words, the reduction of the Young's modulus of the cover plate 200 of the shaped area 120, the Young's modulus of the support film 300 of the shaped area 120, and the Young's modulus of the support member 400 of the shaped area 120 can be achieved by providing the hollow portion. The hollow portion is a localized hole in the film layer, which can reduce the rebound energy of the corresponding film layer, soften the corresponding film layer, and play a role in maintaining deformation.

[0086] In some embodiments, at least one of the cover plate 200 corresponding to the profiled region 120, the support film 300 corresponding to the profiled region 120, and the support member 400 corresponding to the profiled region 120 includes a groove portion, which is used to locally reduce the thickness of the film layer. The groove portion does not penetrate the film layer, and the grooving of the film layer can also reduce the Young's modulus of the film layer. Both a hollow portion and a groove portion can be provided at the location corresponding to the profiled region 120 on the same film layer. This is not specifically limited in this embodiment of the present application, and can be provided based on the specific reduction in Young's modulus.

[0087] For example, Figure 5 This is a partial structural diagram of a cover provided in an embodiment of the present application. Figure 5 As shown, the cover plate 200 corresponding to the special-shaped area 120 is provided with a hollow portion 201. The hollow portions 201 can be arranged in an array or in a non-array arrangement, and the number, size and arrangement are not specifically limited.

[0088] For example, Figure 6 This is a partial cross-sectional diagram of another cover provided in an embodiment of the present application. Figure 6 As shown, the cover plate corresponding to the irregularly shaped area 120 is provided with a hollow portion 201 , a first groove portion 202 and a second groove portion 203 . The opening of the first groove portion 202 is away from the display panel 100 , and the opening of the second groove portion 203 is close to the display panel 100 . Figure 6 This is merely an example of the structural arrangement of the profiled area of the cover plate 200. In some embodiments, the profiled area of the cover plate 200 may be provided with only the first groove portion 202 or only the second groove portion 203, which is not specifically limited in the present embodiment.

[0089] It should be noted that, in the case where the support film 300 and the support member 400 are provided with hollow portions or groove portions, the structural arrangement of the profiled area 120 of the support film 300 and the support member 400 can refer to Figure 5 and Figure 6, is only illustrative and is not intended to be a specific limitation of the embodiments of the present application.

[0090] In some embodiments, the proportion of the total area of the hollow portions in the total area of the shaped area is positively correlated with the Young's modulus of the material used to prepare the corresponding film layer in the shaped area. It can be understood that the density of the hollow portions in the shaped area 120 is positively correlated with the Young's modulus of the material used to prepare the corresponding film layer. For example, the greater the Young's modulus of the material used to prepare the cover plate 200 of the shaped area 120, the greater the density of the hollow portions provided in the shaped area 120. It is easy to understand that the greater the density of the hollow portions, the greater the reduction in the Young's modulus of the film layer, and the greater the Young's modulus of the material used to prepare the corresponding film layer, that is, the harder the material used to prepare the corresponding film layer, the greater the density of the hollow portions required to be provided, and the Young's modulus of the film layer in the shaped area can be appropriately reduced, so that the Young's modulus of the plane area of the corresponding film layer can be greater than that of the shaped area, thereby achieving the shape of the film layer in the shaped area and preventing the film layer from peeling off.

[0091] It should be noted that the Young's modulus of the material will not change, but the Young's modulus of the film layer prepared from the material can be adjusted through structural settings, for example, it can be reduced by setting hollow parts or grooves on the film layer.

[0092] In some embodiments, the proportion of the total area of the grooves to the total area of the shaped region is positively correlated with the Young's modulus of the material used to make the corresponding film layer in the shaped region. Therefore, the greater the Young's modulus of the material used to make the corresponding film layer, that is, the harder the material used to make the corresponding film layer, the greater the density of the grooves needed. This can appropriately reduce the Young's modulus of the film layer in the shaped region, achieving a greater Young's modulus in the planar region of the corresponding film layer than in the shaped region, thereby achieving a stable shape for the film layer in the shaped region and preventing film peeling.

[0093] In some embodiments, the planar region includes a first planar region and a second planar region, with the second planar region located between the first planar region and the profiled region. At least one of the cover plate corresponding to the second planar region, the support film corresponding to the second planar region, and the support member corresponding to the second planar region includes a hollow portion and / or a groove portion. The second planar region can be considered a transition region, serving as the transition section where the various film layers bend. The provision of hollow portions and grooves in the second planar region can adaptively reduce the Young's modulus of the corresponding film layer during the bending transition, facilitating deformation and reducing resilience.

[0094] For example, taking the cover plate as an example, Figure 7 This is a partial cross-sectional diagram of another cover provided in an embodiment of the present application. Figure 7 As shown, the second plane area 112 is located between the first plane area 111 and the special-shaped area 120 , and the second plane area 112 may be provided with a hollow portion 201 and a second groove portion 203 . Figure 7 It is only for illustration and is not intended to be a specific limitation of the embodiments of the present application.

[0095] In some embodiments, the distance between the second planar region 112 and the profiled region 120 and the hollow portion 201 is less than or equal to 200 μm. The distance between the second planar region 112 and the profiled region 120 and the groove portion is less than or equal to 200 μm. The areas where the hollow portion and groove portion are located need to be slightly limited to avoid affecting the protective and support performance of the corresponding film layer.

[0096] Exemplary, reference Figure 7 The distance h1 between the boundary between the second planar area 112 and the profiled area 120 and the groove portion, and the distance h2 between the boundary between the second planar area 112 and the profiled area 120 and the hollow portion 201, are both less than or equal to 200 μm. The boundary between the second planar area 112 and the profiled area 120 is the arc-starting point of the profiled area 120. The arc-starting point can be understood as the starting point of shape deformation. That is, the groove portion and the hollow portion can be provided within a range of ±200 μm from the arc-starting point.

[0097] In some embodiments, the material used to make the cover plate 200 corresponding to the planar region 110 is the same as the material used to make the cover plate 200 corresponding to the shaped region 120. The Young's modulus of the material used to make the cover plate 200 ranges from 5 GPa to 70 GPa. The cover plate 200 is relatively hard overall and has a high Young's modulus. The Young's modulus of the cover plate 200 in the shaped region 120 can be reduced by providing hollow portions and grooves in the shaped region 120.

[0098] In some embodiments, the material used to prepare the support film 300 corresponding to the planar region 110 is the same as the material used to prepare the support film 300 corresponding to the shaped region 120. The Young's modulus of the material used to prepare the support film 300 ranges from 3 GPa to 6 GPa. The support film 300 is relatively hard overall and has a high Young's modulus. The Young's modulus of the support film 300 in the shaped region 120 can be reduced by providing hollow portions and grooves in the shaped region 120.

[0099] In some embodiments, the material used to make the support member 400 corresponding to the planar region 110 is the same as the material used to make the support member 400 corresponding to the shaped region 120. The Young's modulus of the material used to make the support member 400 is greater than 30 GPa. Therefore, the entire material of the support member 400 is relatively hard and has a large Young's modulus. The Young's modulus of the support member 400 in the shaped region 120 can be reduced by providing hollow portions and grooves in the shaped region 120.

[0100] In some embodiments, the cover plate 200 corresponding to the shaped area 120 is pre-shaped based on the shape of the display panel 100 in the shaped area 120. Pre-shaping can pre-fix the shape of the cover plate 200 in the shaped area 120. Since the cover plate 200 is generally made of a relatively hard material, the shaped cover plate 200 can apply a downward compressive stress to the other film layers below the cover plate to limit rebound. This can limit the shape rebound of the film layers below the cover plate and prevent peeling of the film layers below the cover plate. If the cover plate 200 is made of tempered glass, the cover plates of the flat area 110 and the shaped area 120 can be integrally shaped.

[0101] In some embodiments, the supporting film 300 corresponding to the shaped area 120 is pre-shaped based on the shape of the display panel 100 in the shaped area 120. The pre-shaping of the supporting film 300 can reduce the resilience of the hard supporting film 300.

[0102] In some embodiments, the support member 400 corresponding to the shaped region 120 is used to pre-shape the display panel 100 based on the shaped region 120. Typically, the Young's modulus of the support member 400 is greater than that of the supporting film 300. Therefore, the pre-shaping of the support member 400 can reduce the resilience of the rigid support member 400, thereby providing better support for the supporting film 300.

[0103] In some embodiments, the material used to prepare the cover plate 200 corresponding to the planar area 110 is different from the material used to prepare the cover plate 200 corresponding to the profiled area 120. Specifically, the Young's modulus of the material used to prepare the cover plate 200 corresponding to the planar area 100 is greater than the Young's modulus of the material used to prepare the cover plate 200 corresponding to the profiled area 120. Exemplarily, the Young's modulus of the material used to prepare the cover plate 200 corresponding to the profiled area 120 ranges from 40 MPa to 70 GPa, and materials such as PU (polyurethane), TPU (thermoplastic polyurethane elastomer rubber), PET (polyethylene terephthalate), CPI (transparent polyimide), and UTG (ultra-thin flexible glass) with a thickness of 30 μm to 50 μm can be used. The Young's modulus of the material used to prepare the cover plate 200 corresponding to the planar area 110 ranges from 5 GPa to 70 GPa, and materials such as PET, CPI, UTG, and PMMA (polymethyl methacrylate) with a thickness of 30 μm to 150 μm can be used.

[0104] In some embodiments, the material used to prepare the support film 300 corresponding to the planar area 110 is different from the material used to prepare the support film 300 corresponding to the profiled area 120. Specifically, the Young's modulus of the material used to prepare the support film 300 corresponding to the planar area 110 is greater than the Young's modulus of the material used to prepare the support film 300 corresponding to the profiled area 120. Exemplarily, the Young's modulus of the material used to prepare the support film 300 corresponding to the profiled area 120 ranges from 30 MPa to 200 MPa, and a material such as PU or TPU with a thickness of 25 μm to 50 μm can be used. The Young's modulus of the material used to prepare the support film 300 corresponding to the planar area 110 ranges from 3 GPa to 6 GPa, and a material such as PET or CPI with a thickness of 25 μm to 50 μm can be used.

[0105] In some embodiments, the material used to prepare the support member 400 corresponding to the planar area 110 is different from the material used to prepare the support member 400 corresponding to the shaped area 120. Specifically, the Young's modulus of the material used to prepare the support member 400 corresponding to the planar area 110 is greater than the Young's modulus of the material used to prepare the support member 400 corresponding to the shaped area 120. Exemplarily, the thickness of the support member 400 is 100μm to 200μm, and the preparation material can be made of carbon fiber, stainless steel, or titanium alloy. The support member 400 mainly supports the display panel 100 and the support film 300, so it is necessary to reduce the modulus while ensuring its support. The Young's modulus of the support member 400 in the shaped area 120 can be reduced to 500Mpa to 1Gpa by etching the support member 400 in the shaped area 120 to obtain a hollow portion or a groove portion.

[0106] In some embodiments, when the material used to prepare the cover plate 200 corresponding to the planar area 110 is different from the material used to prepare the cover plate 200 corresponding to the irregularly shaped area 120, the cover plate 200 corresponding to the planar area 110 and the cover plate 200 corresponding to the irregularly shaped area 120 are both prepared by a coating process, and the junction of the cover plate 200 corresponding to the planar area 110 and the cover plate 200 corresponding to the irregularly shaped area 120 are directly bonded, and the light transmittance at the junction can be greater than 91% and the haze is less than 0.1, thereby avoiding the light difference between the two areas.

[0107] In some embodiments, the cover plate 200 corresponding to the planar area 110 and the cover plate 200 corresponding to the profiled area 120 are connected via a first connection structure. Figure 8 This is a schematic structural diagram of another display module provided in an embodiment of the present application. Figure 8As shown, the first connecting structure 210 is used to connect the cover plate 200 of the planar area 110 and the cover plate 200 of the profiled area 120. The material of the first connecting structure 210 can be selected from polyimide resin, epoxy resin, or polyurethane materials with excellent optical properties. The optical performance transmittance at the junction is greater than 91%, and the haze is less than 0.1, which prevents light aberration.

[0108] In some embodiments, a first connection layer is provided on at least one side of the cover plate 200, and the orthographic projection of the first connection layer on the display panel 100 covers the orthographic projection of the boundary between the planar area 110 and the profiled area 120 on the display panel 100. For example, Figure 9 This is a schematic structural diagram of another display module provided in an embodiment of the present application. Figure 9 As shown, the first connecting layer 220 serves to secure the cover plate 200 materials in the planar region 110 and the shaped region 120. To ensure that the film adhesion in the planar region 110 and the shaped region 120 is greater than or equal to 5B, the cover plate materials for the planar region 110 and the shaped region 120 are prepared separately through coating and hot pressing. A further layer of the first connecting layer 220 is then applied to the surfaces of the planar region 110 and the shaped region 120 to strengthen the connection and secure the cover plate materials in the two regions together. The material for the first connecting layer 220 can be selected from polyimide resins, epoxy resins, or polyurethanes with excellent optical properties, meeting the cover plate's optical transmittance requirements of >91% and haze <0.1.

[0109] For example, Figure 10 This is a schematic structural diagram of a display module provided in an embodiment of the present application. Figure 10 As shown, the first connection layer 220 does not cover the entire surface. Figure 10 It is only for illustration and is not intended to be a specific limitation of the embodiments of the present application.

[0110] In some embodiments, the support film 300 corresponding to the planar area 110 and the support film 300 corresponding to the shaped area 120 are both prepared by a coating process, and the interface between the support film 300 corresponding to the planar area 110 and the support film 300 corresponding to the shaped area 120 is directly bonded.

[0111] In some embodiments, Figure 11 This is a schematic structural diagram of another display module provided in an embodiment of the present application. Figure 11 As shown, the supporting film 300 corresponding to the planar area 110 and the supporting film 300 corresponding to the profiled area 120 are connected via a second connecting structure 310 .

[0112] In some embodiments, Figure 12 This is a schematic structural diagram of another display module provided in an embodiment of the present application. Figure 12As shown, a second connection layer 320 is provided on at least one side of the support film 300. The orthographic projection of the second connection layer 320 on the display panel 100 covers the orthographic projection of the boundary between the planar area 110 and the profiled area 120 on the display panel 100. The second connection structure 310 may include at least one of polyimide, epoxy resin, and polyurethane. The second connection layer 320 may include at least one of polyimide, epoxy resin, and polyurethane.

[0113] In some embodiments, the light transmittance of the first connection structure 210 and / or the second connection structure 310 is greater than 91%, and the haze is less than 0.1. The light transmittance of the first connection layer 220 and / or the second connection layer 320 is greater than 91%, and the haze is less than 0.1.

[0114] In some embodiments, Figure 13 This is a schematic structural diagram of another display module provided in an embodiment of the present application. Figure 13 As shown, the cover plate 200 corresponding to the special-shaped area 120 includes a first concave portion 230, and the optical adhesive 600 corresponding to the special-shaped area 120 includes a first convex portion 610, and the first concave portion 230 and the first convex portion 610 are interlocked and matched with each other. The thickness of the optical adhesive 600 in the special-shaped area 120 can be appropriately thickened, and its implementation method can be inkjet printing, slit spraying, etc., and the thickness tolerance can be controlled within ±5um. On the one hand, the thickening of the optical adhesive 600 ensures that the cover plate 200 and the polarizer 500 can be perfectly bonded together through the optical adhesive 600 to compensate for the influence of the step difference of the cover plate 200. On the other hand, it can also improve the bonding force between the cover plate 200 and the polarizer 500 in the special-shaped area 120. The setting of the first concave portion 230 can have the same effect as the groove portion, and can reduce the Young's modulus of the cover plate.

[0115] In some embodiments, the cover plate 200 corresponding to the second planar region 112 includes a second recess, and the optical adhesive 600 corresponding to the second planar region 112 includes a second protrusion, with the second recess and the second protrusion interlocking and matching. In a direction perpendicular to the cover plate 200, the size of the first recess is 1 / 3 to 1 / 2 of the thickness of the cover plate 200 corresponding to the planar region 110. In a direction perpendicular to the cover plate 200, the size of the second recess is 1 / 3 to 1 / 2 of the thickness of the cover plate 200 corresponding to the planar region 110. This can enhance the adhesion of the film while reducing the thickness of the profiled region to reduce the upward rebound force of the film.

[0116] According to a second aspect of the present application, a display device is provided. Figure 14 This is a schematic structural diagram of a display device provided in an embodiment of the present application. Figure 14 As shown, the display device provided in the embodiment of the present application includes: the display module 1000 as described in the first aspect.

[0117] It should be noted that the display device provided in the embodiment of the present application can be a smart phone, a tablet computer, a laptop computer, a television, a wearable display device or other display, etc., and the embodiment of the present application does not make any specific limitation.

[0118] In the display device provided by the embodiment of the present application, the Young's modulus of the cover plate in the flat area of the display module is smaller than the Young's modulus of the cover plate in the irregular area. Reducing the Young's modulus of the cover plate in the irregular area can reduce the resilience of the cover plate in the irregular area, making it difficult for the irregular setting of the cover plate in the irregular area to recover, making it easy for the cover plate to maintain its shape in the irregular area, and making it difficult for the cover plate to peel off from the display panel. This can ensure the reliability of the display module film material and avoid reducing the service life of the display module.

[0119] It should be noted that in the above embodiments, the descriptions of each embodiment have different emphases. For portions not described in detail in a particular embodiment, reference should be made to the relevant descriptions of other embodiments. The above embodiments are intended only to illustrate the technical solutions of the present application and are not intended to limit them. Although the present application has been described in detail with reference to the above embodiments, those skilled in the art should understand that they may modify the technical solutions described in the above embodiments or substitute equivalent features for some of the technical features therein. Such modifications or substitutions do not deviate from the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present application. Once those skilled in the art understand the basic inventive concepts, they may make further changes and modifications to these embodiments. Therefore, the appended claims are intended to include the preferred embodiments and all variations and modifications falling within the scope of this specification. Obviously, those skilled in the art may make various changes and modifications to this specification without departing from the spirit and scope of this specification. Thus, if such changes and modifications fall within the scope of the claims and their equivalents, this specification is intended to include such changes and modifications.

Claims

1. A display module, characterized in that: include: The display panel comprises a flat area and a special-shaped area, wherein the surface of the display side of the display panel in the special-shaped area is a curved surface; a cover plate, disposed on a display side of the display panel, wherein the Young's modulus of the cover plate corresponding to the planar area is greater than the Young's modulus of the cover plate corresponding to the irregularly shaped area; a supporting film, disposed on a side of the display panel away from the cover plate; The Young's modulus of the support film corresponding to the planar area is greater than the Young's modulus of the support film corresponding to the profiled area; a support member, disposed on a side of the support film away from the display panel; The Young's modulus of the support member corresponding to the planar area is greater than the Young's modulus of the support member corresponding to the profiled area; At least one of the cover plate corresponding to the irregularly shaped area, the supporting film corresponding to the irregularly shaped area, and the supporting member corresponding to the irregularly shaped area has a hollow portion and a groove portion, the hollow portion is used to penetrate the corresponding film layer, and the groove portion is used to partially reduce the thickness of the film layer; The groove portion includes a first groove portion and a second groove portion. The opening of the first groove portion is away from the display panel, and the opening of the second groove portion is close to the display panel.

2. The display module according to claim 1, wherein: The proportion of the total area of the hollow portion in the total area of the special-shaped area is positively correlated with the Young's modulus of the material used to prepare the film layer corresponding to the special-shaped area; and / or, The proportion of the total area of the groove portions in the total area of the profiled region is positively correlated with the Young's modulus of the material of the film layer corresponding to the profiled region.

3. The display module according to claim 1, wherein: The plane area includes a first plane area and a second plane area, wherein the second plane area is located between the first plane area and the special-shaped area; At least one of the cover plate corresponding to the second planar area, the support film corresponding to the second planar area, and the support member corresponding to the second planar area has a hollow portion and / or a groove portion.

4. The display module according to claim 3, wherein: The distance between the boundary between the second planar area and the irregularly shaped area and the hollow portion is less than or equal to 200 μm; and / or, The distance between the boundary between the second planar area and the irregularly shaped area and the groove portion is less than or equal to 200 μm.

5. The display module according to claim 1, wherein: The material used to prepare the cover plate corresponding to the planar area is the same as the material used to prepare the cover plate corresponding to the profiled area; and / or, The material used to prepare the support film corresponding to the planar area is the same as the material used to prepare the support film corresponding to the profiled area; and / or, The material used to prepare the support member corresponding to the planar area is the same as the material used to prepare the support member corresponding to the profiled area; and / or, The Young's modulus of the material used to prepare the cover plate is in the range of 5 GPa to 70 GPa; and / or, The Young's modulus of the material used to prepare the support membrane is in the range of 3 GPa to 6 GPa; and / or, The Young's modulus of the material used to prepare the support member is greater than 30 GPa.

6. The display module according to claim 5, wherein: The cover plate corresponding to the irregularly shaped area is used to pre-shape the display panel based on the shape of the irregularly shaped area; and / or, The supporting film corresponding to the irregularly shaped area is used to be pre-shaped based on the shape of the display panel in the irregularly shaped area; and / or, The support member corresponding to the irregularly shaped area is used for pre-shaping based on the shape of the display panel in the irregularly shaped area.

7. The display module according to claim 1, wherein: The material used to prepare the cover plate corresponding to the planar area is different from the material used to prepare the cover plate corresponding to the profiled area; and / or, The material used to prepare the support film corresponding to the planar area is different from the material used to prepare the support film corresponding to the profiled area; and / or, The material used to prepare the support member corresponding to the planar area is different from the material used to prepare the support member corresponding to the profiled area.

8. The display module according to claim 7, wherein: The Young's modulus of the material used to prepare the cover plate corresponding to the planar area is greater than the Young's modulus of the material used to prepare the cover plate corresponding to the profiled area; and / or, The Young's modulus of the material used to prepare the support film corresponding to the planar area is greater than the Young's modulus of the material used to prepare the support film corresponding to the profiled area; and / or, The Young's modulus of the material used to prepare the support member corresponding to the planar area is greater than the Young's modulus of the material used to prepare the support member corresponding to the profiled area; and / or, The Young's modulus of the material used to prepare the cover plate corresponding to the special-shaped area is in the range of 40 MPa to 70 GPa; and / or, The Young's modulus of the material used to prepare the cover plate corresponding to the planar area is in the range of 5 GPa to 70 GPa; and / or, The Young's modulus of the material used to prepare the support film corresponding to the irregularly shaped area is in the range of 30 MPa to 200 MPa; and / or, The Young's modulus of the material used to prepare the support film corresponding to the planar area is in a range of 3 GPa to 6 GPa.

9. The display module according to claim 1, wherein: Also includes: Optical adhesive, disposed between the display panel and the cover plate; The cover plate corresponding to the irregularly shaped area includes a first concave portion, and the optical adhesive corresponding to the irregularly shaped area includes a first convex portion, and the first concave portion and the first convex portion are fitted and matched with each other.

10. The display module according to claim 9, wherein: The plane area includes a first plane area and a second plane area, wherein the second plane area is located between the first plane area and the special-shaped area; The cover plate corresponding to the second plane area includes a second concave portion, and the optical adhesive corresponding to the second plane area includes a second convex portion, and the second concave portion and the second convex portion are embedded and matched with each other.

11. The display module according to claim 10, wherein: In a direction perpendicular to the cover plate, a size of the first recess is 1 / 3 to 1 / 2 of the thickness of the cover plate corresponding to the plane area; and / or, In a direction perpendicular to the cover plate, a size of the second recess is 1 / 3 to 1 / 2 of a thickness of the cover plate corresponding to the plane area.

12. The display module according to claim 7, wherein: The cover plate corresponding to the planar area and the cover plate corresponding to the irregularly shaped area are both prepared by a coating process, and the interface between the cover plate corresponding to the planar area and the cover plate corresponding to the irregularly shaped area is directly bonded; or, The cover plate corresponding to the planar area and the cover plate corresponding to the special-shaped area are connected via a first connecting structure; and / or, A first connection layer is provided on at least one side of the cover plate, wherein the orthographic projection of the first connection layer on the display panel covers the orthographic projection of the boundary between the planar area and the irregularly shaped area on the display panel; and / or, The support film corresponding to the planar area and the support film corresponding to the irregularly shaped area are both prepared by a coating process, and the interface between the support film corresponding to the planar area and the support film corresponding to the irregularly shaped area is directly bonded; or, The supporting film corresponding to the planar area and the supporting film corresponding to the profiled area are connected via a second connecting structure; and / or, A second connection layer is provided on at least one side of the support film, and an orthographic projection of the second connection layer on the display panel covers an orthographic projection of a boundary between the planar area and the irregularly shaped area on the display panel.

13. The display module according to claim 12, wherein: The light transmittance of the first connection structure and / or the second connection structure is greater than 91%, and the haze is less than 0.1; and / or, The light transmittance of the first connecting layer and / or the second connecting layer is greater than 91%, and the haze is less than 0.1; and / or, The first connecting structure includes at least one of polyimide, epoxy resin and polyurethane, the second connecting structure includes at least one of polyimide, epoxy resin and polyurethane, the first connecting layer includes at least one of polyimide, epoxy resin and polyurethane, and the second connecting layer includes at least one of polyimide, epoxy resin and polyurethane.

14. A display device, characterized in that: include: The display module according to any one of claims 1 to 13.

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