Display module

Abstract

The embodiment of the invention provides a display module. Comprising a display panel, a back plate, a supporting layer and a filling piece, the display panel comprises a display part, a binding part and a bending part, the filling piece is arranged in a bending area formed by the inner surface of the bending part, and a net-shaped buffering structure is arranged in the filling piece. The filling piece is at least partially contacted with the bending part, and the filling piece is arranged to be of a net-shaped buffer structure, so that when the bending part of the display panel is subjected to external force, the buffer structure can well release stress transmitted to the inside, and further the problems that the bending part of the display panel is not uniform in stress and the stress cannot be released are avoided; the display panel is well protected, and the quality and the reliability of the display module are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of manufacturing display panels, and in particular, to a display module. Background Art

[0002] With the continuous development and improvement of display technology, people have put forward higher requirements for the display quality and effect of display panels to enhance the user experience.

[0003] Folding display panels are widely used in various fields because they can be bent or folded. In the prior art, when bending a display panel, a flexible circuit board and some traces need to be bent into the bonding area of the display panel and bonded. During the use of the display panel, or when the display panel accidentally drops, the bending area of the display panel has a large bending stress inside the film layer itself. Coupled with the external force, it is easy to cause the film layer to rupture in this area, or transfer the large stress inside the panel to other film layers in the display area, such as transferring to the support layer or the backplane inside the display panel. The film layer is unevenly stressed, and the stress cannot be released, resulting in the rupture of the film layer, so that the display panel cannot display normally, reducing the quality and reliability of the display panel.

[0004] In summary, in the prior art, during the process of preparing and forming a display panel, in the bending area of the display panel during use or when subjected to external forces, the film layer is unevenly stressed, and quality problems such as rupture and inability to work properly are likely to occur. Summary of the Invention

[0005] Embodiments of the present invention provide a display module to effectively improve the quality problems in the prior art that when preparing and forming a display panel, the film layer in the bending area of the display panel is prone to uneven stress and the stress cannot be released.

[0006] To solve the above technical problems, in the first aspect of the embodiments of the present invention, a display module is provided, including:

[0007] A display panel, including a display part, a bonding part opposite to the display part, and a bending part connecting the display part and the bonding part;

[0008] At least one backplane, disposed between the display part and the bonding part; and,

[0009] At least one support layer, disposed on the side of the backplane away from the display panel;

[0010] Wherein, the display module further includes a filler, the filler is disposed in the bending area formed on the inner surface of the bending part, and a plurality of buffer structures are disposed inside the filler.

[0011] According to an embodiment of the present invention, the mesh buffer structure includes a plurality of buffer holes.

[0012] According to an embodiment of the present invention, the distribution density of the buffer holes at the central position of the filling member is less than that at the edge position.

[0013] According to an embodiment of the present invention, the filling member includes a first region, a second region, and a third region. The first region is located on the side close to the support layer, the third region is located on the side far from the support layer, and the second region is disposed between the first region and the third region;

[0014] Wherein, within the third region, at least part of the filling member is in contact with the inner surface of the bending portion, and the aperture of the buffer holes within the third region is larger than that within the first region.

[0015] According to an embodiment of the present invention, the outer contour surface of the filling member on the side away from the first region is provided as an arc surface, the arc surface is in contact with the inner surface of the bending portion, and the filling member is in contact with the side surface of the back plate facing the bending portion.

[0016] According to an embodiment of the present invention, the back plate includes a first back plate disposed on the side of the binding portion facing the display portion and a second back plate disposed on the side of the display portion facing the binding portion;

[0017] The support layer includes a first support layer disposed on the side of the first back plate away from the binding portion and a second support layer disposed on the side of the second back plate away from the display portion;

[0018] Wherein, the first support layer is in contact with the second support layer, and the sides of the first back plate and the second back plate close to the bending portion both protrude beyond the edge of the support layer.

[0019] According to an embodiment of the present invention, the first back plate includes a first step surface protruding beyond the edge of the first support layer, and the second back plate includes a second step surface protruding beyond the edge of the second support layer;

[0020] Wherein, a first gap is provided between the first step surface and the filling member in a first direction.

[0021] According to an embodiment of the present invention, a second gap is provided between the side surface of the first support layer facing the bending portion and the filling member in a second direction. The first gap corresponding to the first step surface is communicated with the second gap, and the first direction intersects with the second direction.

[0022] According to an embodiment of the present invention, an end of the filling member away from the second support layer abuts against the inner surface of the bending portion, and in the first direction, the filling member is disposed within a region defined by two opposite surfaces of the first back plate and the second back plate.

[0023] According to an embodiment of the present invention, an adhesive layer is further disposed between the filling member and the support layer, and the elastic modulus of the adhesive layer is greater than the elastic modulus of the filling member.

[0024] Beneficial effects of the embodiments of the present invention: Compared with the prior art, the embodiments of the present application provide a display module. The display module includes a display panel, a back plate, a support layer, and a filling member. The display panel includes a display portion, a bonding portion, and a bending portion. The filling member is disposed within a bending region formed by the inner surface of the bending portion, and a plurality of buffer structures are provided inside the filling member. The filling member is at least partially in contact with the bending portion, and by setting the filling member as a buffer structure, when an external force acts on the bending portion of the display panel, the buffer structure can preferably release the stress transmitted to the inside, thereby avoiding the problems of uneven stress and inability to release stress in the bending portion of the display panel, preferably protecting the display panel, and effectively improving the quality and reliability of the display module. Description of the Drawings

[0025] In order to more clearly illustrate the technical solutions in the embodiments or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0026] Figure 1 It is a schematic structural diagram of a display module provided in an embodiment of the present application;

[0027] Figures 2 - 3 It is a schematic structural diagram of two different filling members provided in an embodiment of the present application;

[0028] Figure 4 It is provided in an embodiment of the present application Figure 3 The film layer structure of the display module corresponding to the filling member therein. Detailed Embodiments

[0029] In the following detailed description, only some embodiments of the present invention are simply illustrated and described by way of example. As those skilled in the art can understand, the embodiments described herein can be modified in various ways without departing from the spirit or scope of the present invention.

[0030] In the drawings, for clarity and better understanding and description, the thicknesses of layers, films, plates, regions, etc. may be enlarged. It should be understood that when an element such as a layer, film, region, or substrate is referred to as being "on another element", it can be directly on the other element or there can also be intervening elements.

[0031] In addition, unless explicitly described to the contrary, the word "comprises" and its variants such as "comprising" or "containing" will be understood to imply the inclusion of the recited elements, but not necessarily the exclusion of other elements. Further, in the specification, the word "on" means placed above or below an object part, and does not necessarily mean placed on the upper side of the object part based on the direction of gravity.

[0032] It will be understood that although the terms "first", "second", etc. may be used herein to describe various components, these components should not be limited by these terms. These components are only used to distinguish one component from another.

[0033] As used herein, the singular forms "a", "an", and "the" are also intended to include the plural forms, unless the context clearly indicates otherwise.

[0034] It will also be understood that the terms "comprising" and / or "including" as used herein specify the presence of the recited features or components, but do not preclude the presence or addition of one or more other features or components.

[0035] It will be understood that when a layer, region, or component is referred to as being "formed on" another layer, region, or component, it can be directly or indirectly formed on the other layer, region, or component. For example, there can be intermediate layers, regions, or components.

[0036] In the following examples, the x-axis, y-axis, and z-axis are not limited to the three axes of a rectangular coordinate system and can be interpreted in a broader sense. For example, the x-axis, y-axis, and z-axis can be perpendicular to each other, or can represent different directions that are not perpendicular to each other.

[0037] An embodiment of the present application provides a display module and a display device, which improve the internal structure of the flexible display module to effectively improve the quality problems such as uneven stress and cracking that are likely to occur in the bending region during the binding and use of the display module.

[0038] As Figure 1 shown, Figure 1This is a schematic structural diagram of a display module provided in an embodiment of the present application. In the embodiment of the present application, when setting up the display module, it includes a display panel 101, a polarizer 102, an optical adhesive 103, and a cover plate 104. Among them, the polarizer 102 is disposed on the light-emitting side of the display panel 101 and is adhered to the display panel 101. The optical adhesive 103 is disposed on the polarizer 102. At the same time, the cover plate 104 is disposed on the optical adhesive 103. The polarizer 102 and the cover plate 104 are bonded through the optical adhesive 103 to form the module structure in the embodiment of the present application.

[0039] In the embodiment of the present application, in order to ensure its display effect, at the edge position of the cover plate 104, an ink blocking layer 106 can also be provided. The edge area is blocked by the ink blocking layer 106 to avoid the problem of edge light leakage and improve its display effect.

[0040] Further, in the embodiment of the present application, when setting up the display panel 101, the display panel 101 is set as a flexible display panel. The display panel 101 can be bent or folded to a certain extent under the action of an external force, thereby enhancing the applicable range of the display panel.

[0041] In the embodiment of the present application, the display panel 101 may include a display portion 1011, a bending portion 1012, and a bonding portion 1013. Among them, the bending portion 1012 is disposed between the display portion 1011 and the bonding portion 1013, so as to connect the display portion 1011 and the bonding portion 1013 through the bending portion 1012. The display portion 1011 is correspondingly disposed within the display area 20 of the panel. At the same time, the bending portion 1012 is correspondingly disposed within the bending area 21, and the bonding portion 1013 is correspondingly disposed within the bonding area 22, thereby forming the display panel 101 provided in the embodiment of the present application.

[0042] Among them, the display portion 1011 mainly realizes the display function. The bending portion and its corresponding bending area mainly realize the bending of the film layer. The bonding portion 1013 and its corresponding bonding area are mainly the circuit bonding areas of the module. Bonding terminals, corresponding driving chips, and flexible circuit boards are also provided in this area, so as to realize the transmission of internal signals of the display panel. Among them, the film layer structure and corresponding components within the above-mentioned bonding area can be set according to the conventional structure.

[0043] Further, in the embodiment of the present application, the display module further includes at least one backplane 31 and at least one support layer 41. Among them, the backplane 31 and the support layer 41 are correspondingly disposed on the back side of the display panel. Optionally, the backplane 31 and the support layer 41 are correspondingly disposed between the display portion 1011 and the bonding portion 1013 of the display panel.

[0044] The backplane 31 and the support layer 41 mainly support or buffer the display panel and other film layers, so as to ensure that the display panel has good stability during operation. In the following embodiments, the backplane 31 is taken as the first backplane 311 and the second backplane 312, and correspondingly, the support layer 41 is taken as the first support layer 411 and the second support layer 412 for illustration. Optionally, according to the requirements of different products, other numbers of backplanes and support layers can be set. However, the implementation methods and corresponding functions are the same as those of the solutions protected in this application, and will not be elaborated here.

[0045] Specifically, the first backplane 311 is disposed on the back side of the display panel bonding portion 1013, and the support layer 41 is correspondingly disposed on the side of the backplane away from the display panel. Among them, the first support layer 411 is disposed on the first backplane 311, the second support layer 412 is disposed on the first support layer 411, and at the same time, the second backplane 312 is disposed on the second support layer 412 and is closely attached to the second support layer 412. Thus, the module structure provided in the embodiment of the present application is formed.

[0046] In the embodiment of the present application, when setting the above-mentioned backplane and support layer, the first backplane 311 and the second backplane 312 have the same length, and on the side close to the bending portion 1012, the edges of the first backplane 311 and the second backplane 312 are flush. Correspondingly, the length of the support layer can be less than the length of the backplane. Specifically, the edges of the first support layer 411 and the second support layer 412 on the side close to the bending portion 1012 are flush.

[0047] Furthermore, on the side close to the bending portion 1012 of the display panel, the edges of the first backplane 311 and the second backplane 312 protrude from the edges of the first support layer 411 and the second support layer 412. In this way, a first step 33 is formed at the edge position between the first backplane 311 and the first support layer 411, and a second step 34 is formed at the edge position between the second backplane 312 and the second support layer 412.

[0048] In the embodiment of the present application, the first backplane 311 and the second backplane 312 can be made of the same material, and the material of the first support layer 411 can be set as a composite tape material or other materials, and the second support layer 412 can be set as a composite copper foil material. The stiffness of the second support layer 412 is greater than that of the first support layer 411, and the film thickness of the second support layer 412 is greater than that of the first support layer 411. The stiffness of the backplane is greater than that of the support layer, so as to provide a better support effect for the display panel. Optionally, when setting, the materials of the backplane and the support layer are not specifically limited, and other materials that can provide support and buffering can be used.

[0049] Further, in the embodiment of the present application, the length of the first support layer 411 may be less than the length of the second support layer 412 to ensure the support effect of the support layer.

[0050] Meanwhile, on the outer surface of the bending portion 1012, an adhesive layer 107 may also be provided to effectively protect the bending portion through the adhesive layer 107. The adhesive layer 107 may be a commonly used adhesive, which will not be elaborated here.

[0051] In the embodiment of the present application, the display module further includes a filling member 501. When the filling member 501 is provided, the filling member 501 is disposed in the bending region 21 corresponding to the bending portion 1012. Specifically, the bending portion 1012, the backplane, and the support layer form a receiving cavity 512 in the bending region 21. The filling member 501 is filled in the receiving cavity 512, and when filling, the filling member 501 fills part of the receiving cavity 512, and at least part of the end of the filling member 501 is in contact with the bending portion 1012. In this way, when the bending portion 1012 of the display panel is deformed under force, the filling member 501 can effectively protect the film layer in this area, thereby avoiding abnormal deformation.

[0052] Further, in the embodiment of the present application, when the filling member 501 is provided, a plurality of buffer hole structures 502 are further provided inside the filling member 501. When the display module is subjected to an external force, the external force will be transmitted to the filling member 501. Since a plurality of buffer hole structures 502 are provided inside the filling member 501, during the deformation of the filling member 501, the buffer hole structures 502 can effectively release the transmitted stress, thereby reducing the deformation of the bending portion 1012 and ensuring the performance of the bending portion 1012.

[0053] In the embodiment of the present application, the buffer hole structure 502 may be set as a buffer hole structure. For example, the buffer hole structure is set as a three-dimensional network buffer hole structure, and the three-dimensional network buffer hole is a three-dimensional structure, or the buffer hole structure 502 is set as a gap structure of other shapes. The above structures can effectively buffer and release the external stress, thereby improving the stress condition of the film layer. Therefore, other forms of buffer structures inside the filling member are within the protection scope of the present application, not limited to the above buffer structures. In the following embodiments, the three-dimensional network buffer hole structure is taken as an example for illustration.

[0054] Among them, the material of the filling member may be set as glass fiber, carbon fiber, and other high-modulus composite materials. Optionally, the elastic modulus of the filling member is set to 2 GPa to 3 GPa. For example, the elastic modulus of the filling member is set to 2.5 GPa, and when preparing the corresponding buffer structure of the filling member, a network structure can be prepared through a weaving process.

[0055] In the embodiments of the present application, since a buffer structure is provided inside the filling member with a relatively high elastic modulus, its stiffness will thus decrease. When an external force acts on the filling member, the filling member will deform to a certain extent while having support, and the stress can be effectively released during the deformation process, thereby protecting other film layers. Thus, the stress is absorbed and shock absorption is achieved, reducing the problem of damage to the film layers inside the module.

[0056] As Figures 2 - 3 shown, Figures 2 - 3 FIG. is a schematic structural diagram of two different filling members provided in the embodiments of the present application. Combining with Figure 1 the film layer structure in, in the embodiments of the present application, when setting the filling member 501, the shape of the filling member 501 can be arbitrarily set, and one end of the filling member 501 is attached to the side surface of the support layer, and the other end is in contact with the inner surface of the bending portion 1012 of the display panel. Thus, the purpose of fixing and releasing stress is achieved.

[0057] For details, see Figure 2 in, the filling member 501 at least includes a first end face 601 and a second end face 602. Among them, the first end face 601 is attached to the side surface of the support layer facing the bending portion 1012, the second end face 602 is attached to the inner surface of the bending portion 1012, and the outer contour surface of the second end face 602 can be set as an arc contour surface. In this way, the arc contour surface can better fit with the inner surface of the bending portion 1012, and the fitting area is larger, so as to better release the external force and ensure the performance of the bending portion 1012. Optionally, the second end face 602 can also be set as a contour surface of other shapes to protect the module. At the same time, on both sides of the edge of the first end face 601, a concave platform can be provided to avoid contact with other film layers and reserve a filling space for the filling member.

[0058] Further, the area where the second end face 602 contacts the bending portion 1012 can be located at the position where the bending portion 1012 has the maximum bending, so as to protect the film layer in this area and avoid the failure of the film layer in this area.

[0059] For details, see Figure 1 the structure in, in the embodiments of the present application, the first backplane 311 further includes a first step surface 332 protruding from the edge position of the first support layer 411. Among them, the first step surface 332 is the upper surface corresponding to the protruding part of the first backplane, and the second backplane 312 further includes a second step surface 333 protruding from the edge position of the second support layer 412. Among them, the second step surface 34 is the lower surface of the protruding part of the second backplane 312 facing the first step surface. When setting the filling member 501, the filling member 501 does not contact the above two different step surfaces.

[0060] For details, see Figure 1 In the first direction Y and the second direction X, in the following embodiments, the first direction Y intersects with the second direction X, such as when the two are perpendicular, and when the horizontal plane is used as a reference object, the first direction Y can be a direction perpendicular to the horizontal plane, and the second direction X can be a horizontal direction parallel to the horizontal plane. The filler 501 and the first step surface 332 and the second step surface 333 all have a first gap 331 in the first direction Y. In the embodiment of the present application, when the first gap 331 corresponding to the above two different step surfaces is set, the gap height values ​​of the first gap 331 corresponding to the two different step surfaces can be set to be the same, or set differently. For example, when the values ​​of the first gaps 331 of the two are the same, it can be ensured that the module has good symmetry inside. When the values ​​of the first gap 331 are set differently, in the embodiment of the present application, the value of the first gap 331 corresponding to the first step surface 332 is greater than the value of the first gap 331 corresponding to the second step surface 333. In this way, when the bending part is subjected to force and compresses the filling piece to deform, the deformation at the bottom is larger, and the gap of the first gap 331 is larger, so that it can accommodate more filling pieces, while the deformation at the top is relatively small. In this way, the filling effect of the filling piece during deformation can be effectively guaranteed, the internal force can be uniform, and damage to the membrane layer can be avoided.

[0061] Furthermore, in the embodiment of the present application, the filler 501 is also provided with a second gap 341 in the second direction X on the side 69 of the first support layer 411 facing the curved portion. In the embodiment of the present application, the second gap 341 is a lateral gap, and the second gap 341 is connected to the first gap 331 corresponding to the first step surface 332. In this way, when the filler 501 is subjected to a large deformation, on the one hand, the second gap 341 can directly accommodate the deformed filler, and on the other hand, the deformed part accommodated in the first gap 331 can further flow into the second gap for buffering, thereby reserving enough space for the deformation of the filler, and ensuring the deformation effect of the filler when subjected to force, and ensuring the supporting effect of the filler on the membrane layer. In the embodiment of the present application, since the second gap is a lateral gap, in order to reduce the thickness of the module, in the embodiment of the present application, the gap height value of the second gap 341 can be greater than the gap height value of the first gap.

[0062] In the embodiment of the present application, by setting the above-mentioned different gaps, when the bending area 21 of the display module is subjected to a large external force, the flexible filling piece will be deformed under the action of stress, and the first gap 331 and the second gap 341 can provide avoidance space for the deformed filling piece, and the first gap and the second gap can cooperate with each other, thereby avoiding the filling piece itself from squeezing other film layers during the deformation process, so that the film layers in the bending area and the film layers in other areas are effectively protected by the filling piece.

[0063] In the embodiment of the present application, when setting the display module, an adhesive layer 71 may also be provided on the side surface of the support layer facing the bending portion. Wherein, the adhesive layer 71 may be directly provided on the side surface of the second support layer 412. And the length of the adhesive layer 71 is less than or equal to the thickness of the second support layer 412. At the same time, the adhesive layer 71 does not contact the side surface of the first support layer.

[0064] The first end surface 601 of the filler 501 is attached to the adhesive layer 71, so as to realize the fixation of the filler 501. In order to ensure the stress release effect of the filler 501 and better protect the bending portion, in the embodiment of the present application, the elastic modulus of the adhesive layer is less than the elastic modulus of the filler. In this way, when the stress not fully released by the filler 501 is transmitted to the adhesive layer 71, the adhesive layer with a smaller elastic modulus will undergo elastic deformation to a certain extent, so as to further buffer the unreleased stress, effectively avoiding the continuous transmission of stress to the inside of the support layer, thereby protecting the display module.

[0065] Furthermore, as shown in Figure 1 , since the length of the adhesive layer 71 is less than the thickness of the second support layer, therefore, a gap is also provided between the side surface of the first support layer 411 facing the bending portion 1012 and the filler 501. Through this gap, the deformed filler and the film layer in the module are further protected, avoiding the extrusion of other film layers by the filler during the deformation process.

[0066] In the embodiment of the present application, the distance of the first gap corresponding to the first step surface 332 may be greater than the distance of the second gap corresponding to the second step surface 333. The pressure received by the bottom of the filler is greater than that received by the upper part, so that the filler 501 with a larger deformation at the bottom has more accommodation space to protect other film layers.

[0067] Furthermore, when setting the filler 501, its second end surface 602 may be completely attached to the inner side surface of the bending portion 1012, so as to increase the contact area between the two and improve its protection effect.

[0068] As shown in Figure 2 the filler 501 in, combined with Figure 1 the module structure in. The filler 501 includes a first region a close to the support layer, a third region c far from the support layer, and a second region b provided between the first region a and the third region c. In the embodiment of the present application, the widths of the above-mentioned first region a, second region b, and third region c may be adjusted according to the sizes of different fillers. Optionally, the width of the first region a is less than or equal to the width of the second region b, and the width of the second region b is greater than the width of the third region c.

[0069] In the embodiments of the present application, the density of the three-dimensional network buffer hole structure 502 in the above different regions is different. Optionally, the density of the buffer holes corresponding to the buffer hole structure 502 in the third region c is greater than the density of the buffer hole structure 502 in the first region a and the second region b, and the aperture of the corresponding buffer holes in the third region is greater than the aperture of the above buffer holes in the first region and the second region. Specifically, the ratio between the aperture of the buffer hole structure 502 in the third region c and the aperture of the buffer hole in the first region a may be greater than or equal to 1.5. In this way, the aperture of the buffer holes near the bending part is larger, which can effectively absorb larger stress and avoid the problem of damage to the filling member and the bending part in this region.

[0070] Furthermore, in the embodiments of the present application, since the filling member 501 is in direct contact with the corresponding film layer, and the contact part is mainly the outer edge of the filling member 501, therefore, when setting the buffer hole structure 502 inside the filling member 501, the distribution density of the three-dimensional network holes at this edge position is greater than the distribution density of the holes at the center position of the filling member. In this way, by setting three-dimensional network holes with a larger density at the edge contact part, it can withstand and release a larger stress effect, and reduce the stress transmitted to the inside of the filling member, avoiding the problem of stress rupture of the internal support layer, the backplane, and the display panel, so as to effectively protect the display module. Optionally, the buffer holes corresponding to the above buffer structure are set as three-dimensional network holes, and the structure of the corresponding three-dimensional network holes can be set in shapes such as circular holes, special-shaped holes, square holes, or honeycomb holes, and adjacent holes can be interconnected and cross-linked. In this way, different holes can be intertwined with each other to form a network for the filling member, and the holes of this network can be interconnected to achieve a better stress release effect.

[0071] See details in Figure 2 the structure of the filling member 501 in. In the embodiments of the present application, when setting the buffer hole structure in different regions of the filling member, from the third region c to the first region a, the distribution density of the three-dimensional network holes corresponding to this buffer structure can gradually decrease, so as to form a differential buffer effect inside the filling member. When the external stress is transmitted and released in the filling member, the differential buffer structure can make the stress release and absorb in different directions, so as to ensure the stress effect of the entire filling member.

[0072] Furthermore, the area of the first end face 601 can be smaller than the area of the second end face 602. In this way, while ensuring the film layer fitting and the fixing effect on the filling member, it can also effectively release stress and ensure the reliability of the module.

[0073] Furthermore, in the embodiment of the present application, the side surfaces of the first back plate 311 and the second back plate 312 facing the bending portion can directly adhere to and contact the filling piece 501, thereby further fixing the filling piece and avoiding the problem of the filling piece shaking when subjected to force and causing malfunction.

[0074] See Figure 3 In the embodiment of the present application, the filling member 501 can also be configured as a raised block structure. Figure 2 In the structure of the filling piece in the embodiment of the present application, at this time, the first end surface 601 of the filling piece 501 can be set to a flat surface.

[0075] like Figure 4 As shown, Figure 4 Provided in the embodiments of this application Figure 3 The filling piece in the display module corresponds to the film structure of the display module. Figure 3 In the structure of the filler 501 in the second support layer 412, the first end surface 601 is directly attached to the side surface of the second support layer 412. The upper and lower edges of the first end surface 601 are not in contact with the first back plate 311 and the second back plate 312. At the same time, in the third area c of the filler 501, part of the filler 501 in the third area c is in contact with the bent portion 1012.

[0076] In the embodiment of the present application, within the accommodating cavity 512, in the corresponding areas of the top and bottom of the accommodating cavity 512, the side walls of the filling piece do not contact the inner surface of the curved portion 1012, thereby reserving sufficient filling space for the filling piece to ensure the support of the filling piece for the film layer and the buffering effect of the stress, thereby ensuring the performance of the display module.

[0077] Specifically, in the first direction Y, the filler 501 is disposed in an area defined by planes corresponding to two surfaces of the first back plate and the second back plate opposite to each other, as shown in FIG. Figure 4 In the embodiment, the thickness of the filler 501 is less than the distance between the first back plate and the second back plate, and the outer contour surface of the filler away from the first back plate does not contact the second back plate 312, and the outer contour surface of the filler close to the first back plate does not contact the first back plate 311. In this way, by reducing the thickness of the filler, materials are saved. At the same time, due to the reduction in the thickness and corresponding volume of the filler, more fillable areas are reserved at the top and bottom of the accommodating cavity, thereby ensuring that the filler can still have a good extrusion and support effect under large deformation conditions.

[0078] Further, when setting the arc-shaped outer contour surface within the third region c of the filler 501, that is, the second end face 602 of the filler 501, the radian of the arc-shaped second end face can be greater than or equal to the radian of the bending portion 1012. In this way, when the bending portion is deformed by force, the second end face 602 of the filler can effectively support the bending portion, thereby avoiding a large degree of deformation of the bending portion and ensuring the performance of the module.

[0079] Further, an embodiment of the present application also provides a display device, which includes the above-mentioned display module in the embodiment of the present application. When the display module or the display device is bent under force in the bending area, the filler can better support the film layer and release the stress, thereby effectively avoiding the problem of stress cracking inside the film layer and improving the performance and reliability of the device.

[0080] Among them, the display module and the display device can be any product or component with bending or other functions, such as mobile phones, computers, electronic papers, displays, wearable devices, etc., and their specific types are not specifically limited.

[0081] In summary, the above has introduced in detail a display module provided by an embodiment of the present invention. Specific examples are used in this article to elaborate on the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the technical solution and its core idea of the present invention; although the present invention is disclosed as above with preferred embodiments, the above preferred embodiments are not used to limit the present invention. Those of ordinary skill in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention is based on the scope defined by the claims.

Claims

1. A display module, characterized in that, Comprising: A display panel, including a display portion, a bonding portion disposed opposite to the display portion, and a bending portion connecting the display portion and the bonding portion; At least one backplane, disposed between the display portion and the bonding portion; and, At least one support layer, disposed on a side of the backplane away from the display panel; Wherein, the display module further includes a filler, the filler is disposed in a bending region formed by an inner surface of the bending portion, and a mesh buffer structure is disposed inside the filler.

2. The display module according to claim 1, characterized in that, The mesh buffer structure includes a plurality of buffer holes.

3. The display module according to claim 2, characterized in that, A distribution density of the buffer holes at a central position of the filler is less than that at an edge position.

4. The display module according to claim 2, characterized in that, The filler includes a first region, a second region, and a third region, the first region is located on a side close to the support layer, the third region is located on a side away from the support layer, and the second region is disposed between the first region and the third region; Wherein, in the third region, at least a part of the filler is in contact with the inner surface of the bending portion, and a pore diameter of the buffer holes in the third region is larger than that in the first region.

5. The display module according to claim 4, characterized in that, An outer contour surface of the filler on a side away from the first region is set as an arc surface, the arc surface is in contact with the inner surface of the bending portion, and the filler is in contact with a side surface of the backplane facing the bending portion.

6. The display module according to claim 1, characterized in that, The backplane includes a first backplane disposed on a side of the bonding portion facing the display portion, and a second backplane disposed on a side of the display portion facing the bonding portion; The support layer includes a first support layer disposed on a side of the first backplane away from the bonding portion, and a second support layer disposed on a side of the second backplane away from the display portion; Wherein, the first support layer is in contact with the second support layer, and edges of the first backplane and the second backplane close to the bending portion protrude beyond an edge of the support layer.

7. The display module according to claim 6, characterized in that, The first backplane includes a first step surface protruding beyond an edge of the first support layer, and the second backplane includes a second step surface protruding beyond an edge of the second support layer; Wherein, a first gap is provided between the first step surface and the filler in a first direction.

8. The display module according to claim 6, characterized in that, A second gap is provided between a side surface of the first support layer facing the bending portion and the filler in a second direction, the first gap corresponding to the first step surface is communicated with the second gap, and the first direction intersects with the second direction.

9. The display module according to claim 8, characterized in that, An end of the filler on a side away from the second support layer abuts against the inner surface of the bending portion, and in the second direction, the filler is disposed in a region defined by planes corresponding to opposite surfaces of the first backplane and the second backplane.

10. The display module according to claim 1, characterized in that, An adhesive layer is further provided between the filler and the support layer, and an elastic modulus of the adhesive layer is less than that of the filler.

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