Display module and display device

Abstract

The invention discloses a display module and a display device. The display module comprises a display panel, the display panel is provided with a display side and a back side, the display side is opposite to the back side, the display panel comprises a first flattening area, a bending area and a second flattening area, the bending area is located between the first flattening area and the second flattening area, and the bending area is connected with the first flattening area and the second flattening area; the display panel further comprises a first supporting layer located on the back side of the display panel, the first supporting layer comprises two or more strip-shaped structures, and orthographic projections of the strip-shaped structures on the display panel extend from the bending area to corner positions, away from the bending area, of the first flattening area and the second flattening area. The crease of the display module in the bending state can be thoroughly leveled, so that the display effect of the display module is improved.

Description

Technical Field

[0001] The embodiments of the present disclosure belong to the field of display technology, and specifically relate to a display module and a display device. Background Art

[0002] OLED (Organic Light-Emitting Diode) display screens have attracted widespread attention due to their advantages such as self-luminescence, low power consumption, lightness, flexibility, bright colors, high contrast, and fast response rate. Summary of the invention

[0003] The embodiment of the present disclosure provides a display module and a display device. The display module includes a display panel, the display panel has a display side and a back side, the display side and the back side are opposite, the display panel includes a first flattened area, a bending area, and a second flattened area, the bending area is located between the first flattened area and the second flattened area, and the bending area is connected to the first flattened area and the second flattened area respectively;

[0004] It also includes a first supporting layer, which is located on the back side of the display panel.

[0005] The first supporting layer includes more than two strip structures, and the orthographic projections of the strip structures on the display panel extend from the bending area to corners of the first flattened area away from the bending area and to corners of the second flattened area away from the bending area.

[0006] In some embodiments, the first supporting layer includes a first strip structure and a second strip structure.

[0007] The first strip structure and the second strip structure intersect, and the orthographic projection of the intersection position on the display panel is located in the bending area,

[0008] The ends of the first strip-shaped structure are located at a pair of diagonal positions consisting of a corner of the first flattened area and a corner of the second flattened area.

[0009] The end of the second strip-shaped structure is located at another pair of diagonal positions formed by another corner of the first flattened area and another corner of the second flattened area.

[0010] In some embodiments, a first groove is formed on a side of the first strip structure facing away from the display panel, and a second groove is formed on a side of the second strip structure facing away from the display panel.

[0011] The first supporting layer further includes a first heat dissipation structure and a second heat dissipation structure, wherein the first heat dissipation structure is located in the first groove, and the second heat dissipation structure is located in the second groove.

[0012] In some embodiments, the first heat dissipation structure and the first strip structure are flush with each other on a side facing away from the display panel.

[0013] The second heat dissipation structure is flush with a surface of the second strip structure on a side facing away from the display panel.

[0014] In some embodiments, a first distance is provided between the first heat dissipation structure and the sidewall of the first groove, and a size range of the first distance is 0.3 to 0.6 mm;

[0015] A second distance is provided between the second heat dissipation structure and the side wall of the second groove, and the second distance has a size ranging from 0.3 to 0.6 mm.

[0016] In some embodiments, the material of the first heat dissipation structure and the second heat dissipation structure includes graphite.

[0017] In some embodiments, the first strip-shaped structure includes a first portion, and the first portion is located between an end of the first strip-shaped structure and an intersection thereof with the second strip-shaped structure;

[0018] The second strip-shaped structure comprises a second portion, and the second portion is located between an end of the second strip-shaped structure and an intersection position between the second strip-shaped structure and the first strip-shaped structure;

[0019] The orthographic projection shapes of the first portion and the second portion on the display panel include a wave shape;

[0020] The width of the orthographic projection of the first portion on the display panel is smaller than the width of the orthographic projection of other portions of the first strip structure on the display panel;

[0021] A width of an orthographic projection of the second portion on the display panel is smaller than a width of an orthographic projection of other portions of the second strip-shaped structure on the display panel.

[0022] In some embodiments, a third groove is formed on a side of the intersection area of ​​the first strip structure and the second strip structure close to or away from the display panel;

[0023] Alternatively, a plurality of through holes are provided in the intersection region of the first strip structure and the second strip structure, and the plurality of through holes are evenly distributed in the intersection region of the first strip structure and the second strip structure.

[0024] In some embodiments, the orthographic projection shape of the distribution area of ​​the third groove or the plurality of through holes on the display panel includes a spindle shape or a straight line shape.

[0025] In some embodiments, the material of the first strip structure and the second strip structure comprises a metal material;

[0026] The thickness of the first stripe structure and the second stripe structure is in the range of 10 μm or more.

[0027] In some embodiments, the first supporting layer further includes a first adhesive layer located between the first strip structure and the display panel and between the second strip structure and the display panel.

[0028] The orthographic projection of the first adhesive layer on the display panel is located within the orthographic projection area of ​​the first strip structure and the second strip structure on the display panel.

[0029] The first adhesive layer does not overlap with the orthographic projection of the intersection of the first strip structure and the second strip structure on the display panel, and the first adhesive layer at least overlaps with the orthographic projection of the end portions of the first strip structure and the second strip structure on the display panel.

[0030] In some embodiments, the thickness of the first bonding layer ranges from 20 to 30 μm;

[0031] The viscosity of the first adhesive layer is greater than 2000 gf / inch.

[0032] In some embodiments, the first supporting layer further includes a second adhesive layer located between the first groove and the first heat dissipation structure and between the second groove and the second heat dissipation structure.

[0033] The orthographic projection of the second adhesive layer on the display panel is located in the orthographic projection area of ​​the first heat dissipation structure and the second heat dissipation structure on the display panel.

[0034] The second adhesive layer does not overlap with the orthographic projection of the intersection of the first strip structure and the second strip structure on the display panel, and the second adhesive layer at least overlaps with the orthographic projection of the ends of the first heat dissipation structure and the second heat dissipation structure on the display panel.

[0035] In some embodiments, a second supporting layer is further included, located between the display panel and the first supporting layer, and the second supporting layer covers the back side of the display panel.

[0036] The bending area includes a first sub-area, a second sub-area and a third sub-area, the second sub-area is located between the first sub-area and the third sub-area and the three are connected in sequence, the first sub-area is connected to the first flattened area, and the third sub-area is connected to the second flattened area.

[0037] The thickness of the region of the second supporting layer overlapping the first sub-region and the third sub-region is smaller than the thickness of other regions of the second supporting layer.

[0038] A plurality of holes are formed in a region of the second supporting layer that overlaps with the second sub-region, and the plurality of holes are evenly distributed.

[0039] The embodiment of the present disclosure further provides a display device, which includes the above-mentioned display module.

[0040] Beneficial effects of the present invention: In the display module provided by the present invention, the strip structure has a rebound force to restore its original shape when it is bent along the bending area of ​​the display panel, by extending the orthographic projection of the strip structure on the display panel from the bending area to the corner positions of the first flattening area and the second flattening area away from the bending area, in the process of the bending area of ​​the display panel changing from a bent state to a flattened state, the rebound force of the strip structure will pull itself to restore its original shape in the flattened state, thereby pulling the corner position of the display panel so that the creases of the display panel in the bent state are completely flattened, and then the display panel can be restored from the bent state to the completely flattened state, ultimately improving the display effect of the display module.

[0041] The display device provided by the present invention, by adopting the above-mentioned display module, can completely flatten the folds of the display device during the process of bending and unfolding, thereby ultimately improving the display effect of the display device. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] The accompanying drawings are used to provide a further understanding of the embodiments of the present disclosure and constitute a part of the specification. Together with the embodiments of the present disclosure, they are used to explain the present disclosure and do not constitute a limitation of the present disclosure. The above and other features and advantages will become more apparent to those skilled in the art by describing detailed example embodiments with reference to the accompanying drawings, in which:

[0043] Figure 1 It is a schematic diagram of an OLED display module in the related art in a flattened state after being bent.

[0044] Figure 2a FIG. 4 is a schematic diagram of the back side of a display module in this embodiment.

[0045] Figure 2b It is a schematic diagram showing the module in a flattened state after being bent in this embodiment.

[0046] Figure 2c FIG. 4 is a cross-sectional schematic diagram of a display module in this embodiment.

[0047] Figure 3a It is a schematic top view of the structure of a first supporting layer in the display module of this embodiment.

[0048] Figure 3b For along Figure 3a Schematic diagram of the structural section along the AA' section line.

[0049] Figure 3c It is a schematic top view of another structure of the first supporting layer in the display module of this embodiment.

[0050] Figure 3d For along Figure 3c Schematic diagram of the structural section along the BB' section line.

[0051] Figure 3e It is a schematic top view of another structure of the first supporting layer in the display module of this embodiment.

[0052] Figure 3f For along Figure 3e Schematic diagram of the structural section along the CC' section line.

[0053] Figure 4a For along Figure 3a , Figure 3c and Figure 3e A structural cross-sectional diagram of the DD' section line.

[0054] Figure 4b For along Figure 3a , Figure 3c and Figure 3e Another structural cross-sectional diagram of the DD' section line.

[0055] Figure 5a for Figure 3a , Figure 3c and Figure 3e An enlarged schematic diagram of part H in FIG.

[0056] Figure 5b for Figure 3a , Figure 3c and Figure 3e Another enlarged schematic diagram of part H in the figure. DETAILED DESCRIPTION

[0057] In order to enable those skilled in the art to better understand the technical solution of the embodiments of the present disclosure, a display module and a display device provided by the embodiments of the present disclosure are further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0058] The embodiments of the present disclosure will be described more fully below with reference to the accompanying drawings, but the embodiments shown may be embodied in different forms and should not be construed as being limited to the embodiments set forth in the present disclosure. On the contrary, the purpose of providing these embodiments is to make the present disclosure thorough and complete and to enable those skilled in the art to fully understand the scope of the present disclosure.

[0059] The embodiments of the present disclosure are not limited to the embodiments shown in the drawings, but include modifications of the configurations formed based on the manufacturing process. Therefore, the regions illustrated in the drawings have schematic properties, and the shapes of the regions shown in the drawings illustrate the specific shapes of the regions, but are not intended to be limiting.

[0060] At present, users' requirements for the bending ability and crease resistance of foldable OLED display products are constantly increasing.

[0061] In the related art, a foldable OLED display module is provided with a support layer on the back side of the display panel to protect the foldable display panel. The support layer covers the entire back side of the display panel, and the structure of the support layer is designed as a laminate of an adhesive layer and a support material layer, and the adhesive layer is used to achieve adhesion between the support material layer and the display panel.

[0062] However, as the bending radius of foldable OLED display modules gradually decreases, the crease problem of existing OLED display modules is gradually exposed. Figure 1 As shown, the reason for the formation of the crease is that the laminated material of the OLED display module cannot return to a completely flat state after frequent bending, resulting in unevenness on the surface of the OLED display module 8 (especially the surface of the bending area), affecting the visual effect of the user when viewing the screen from a side angle.

[0063] In addition, when the supporting layer on the back side of the display panel is made of carbon fiber material, since the carbon fiber material is not conductive, the grounding of the back surface of the display panel requires plating a metal layer or a conductive material layer on the surface of the supporting layer away from the display panel. The preparation process is complicated and costly.

[0064] In order to solve the above problems in the related art, in a first aspect, an embodiment of the present disclosure provides a display module, such as Figure 2a , Figure 2b and Figure 2c As shown, it includes a display panel 1, the display panel 1 has a display side and a back side, the display side and the back side are opposite to each other, the display panel 1 includes a first flattening area 100, a bending area 101 and a second flattening area 102, the bending area 101 is located between the first flattening area 100 and the second flattening area 102, and the bending area 101 is connected to the first flattening area 100 and the second flattening area 102 respectively; it also includes a first supporting layer 2, which is located on the back side of the display panel 1, and the first supporting layer 2 includes more than two strip structures 20, and the orthographic projection of the strip structure 20 on the display panel 1 extends from the bending area 101 to the corner position of the first flattening area 100 away from the bending area 101 and the corner position of the second flattening area 102 away from the bending area 101.

[0065] The bending of the bending area 101 can make the first flattening area 100 and the second flattening area 102 of the display panel 1 overlap, and the flattening of the bending area 101 can make the first flattening area 100 and the second flattening area 102 of the display panel 1 flattened on the same plane, that is, the entire display panel 1 is in a flattened state.

[0066] In the present embodiment, the strip structure 20 has a rebound force to restore its original shape when it is bent along with the bending area 101 of the display panel 1. By extending the orthographic projection of the strip structure 20 on the display panel 1 from the bending area 101 to the corner position of the first flattening area 100 away from the bending area 101 and the corner position of the second flattening area 102 away from the bending area 101, in the process of the bending area 101 of the display panel 1 changing from a bent state to a flattened state, the rebound force of the strip structure 20 will pull itself to restore its original shape in the flattened state, thereby pulling the corner position of the display panel 1 so that the crease of the display panel 1 in the bent state is completely flattened, and then the display panel 1 can be restored from the bent state to the completely flattened state, thereby ultimately improving the display effect of the display module.

[0067] In some embodiments, Figure 3a and Figure 3b As shown, the first supporting layer 2 includes a first strip structure 201 and a second strip structure 202, the first strip structure 201 and the second strip structure 202 intersect, and the orthographic projection of the intersecting position on the display panel 1 is located in the bending area 101, the end of the first strip structure 201 is located at a pair of diagonal positions consisting of a corner of the first flattening area 100 and a corner of the second flattening area 102, and the end of the second strip structure 202 is located at another pair of diagonal positions consisting of another corner of the first flattening area 100 and another corner of the second flattening area 102.

[0068] Among them, the first strip structure 201 and the second strip structure 202 have a rebound force to restore their original shapes when the bending area 101 of the display panel 1 is bent. By making the end of the first strip structure 201 located at a pair of diagonal positions consisting of a corner of the first flattening area 100 and a corner of the second flattening area 102, and the end of the second strip structure 202 is located at another pair of diagonal positions consisting of another corner of the first flattening area 100 and another corner of the second flattening area 102, in the process of the bending area 101 of the display panel 1 changing from a bent state to a flattened state, the rebound force of the first strip structure 201 and the second strip structure 202 will pull themselves through their ends to restore their original shapes in the flattened state, thereby pulling the diagonal position of the display panel 1 to completely flatten the crease of the display panel 1 in the bent state, and then the display panel 1 can be restored from the bent state to the completely flattened state, thereby ultimately improving the display effect of the display module.

[0069] In some embodiments, the orthographic projections of the first strip structures 201 and the second strip structures 202 on the display panel 1 are planar or grid-shaped. The grid-shaped first strip structures 201 and the second strip structures 202 can reduce the material cost of the first supporting layer 2 compared to the planar first strip structures 201 and the second strip structures 202.

[0070] In some embodiments, Figure 3c and Figure 3d As shown, a first groove A is formed on the side of the first strip structure 201 facing away from the display panel 1, and a second groove B is formed on the side of the second strip structure 202 facing away from the display panel 1. The first supporting layer 2 also includes a first heat dissipation structure 203 and a second heat dissipation structure 204. The first heat dissipation structure 203 is located in the first groove A, and the second heat dissipation structure 204 is located in the second groove B.

[0071] The provision of the first heat dissipation structure 203 and the second heat dissipation structure 204 can improve the thermal conductivity of the first supporting layer 2, thereby improving the heat dissipation capacity of the display module.

[0072] In some embodiments, Figure 3c and Figure 3d As shown, the first heat dissipation structure 203 and the first strip structure 201 are flush with the surface of the side facing away from the display panel 1, and the second heat dissipation structure 204 and the second strip structure 202 are flush with the surface of the side facing away from the display panel 1. Such an arrangement can improve or avoid the problem of poor mold printing in the process of attaching the first supporting layer 2 to the back side of the display panel 1 caused by the uneven surface of the first heat dissipation structure 203 and the first strip structure 201 and the second heat dissipation structure 204 and the second strip structure 202.

[0073] In some embodiments, Figure 3c and Figure 3d As shown, the first heat dissipation structure 203 and the side wall of the first groove A are separated by a first spacing, and the size range of the first spacing is 0.3-0.6 mm; the second heat dissipation structure 204 and the side wall of the second groove B are separated by a second spacing S, and the size range of the second spacing S is 0.3-0.6 mm. For example, the first spacing is 0.5 mm, and the second spacing S is 0.5 mm.

[0074] Among them, the setting of the first spacing S and the second spacing can avoid the uneven surface of the heat dissipation structure and the strip structure facing away from the display panel 1 due to the bonding tolerance and the relative position shift of the bonding objects during bonding, thereby avoiding the problem of poor molding when the first support layer 2 is bonded to the back side of the display panel 1.

[0075] In some embodiments, the material of the first heat dissipation structure 203 and the second heat dissipation structure 204 includes graphite. Graphite has excellent thermal conductivity and can improve the thermal conductivity of the first supporting layer 2, thereby improving the heat dissipation capacity of the display module.

[0076] It should be noted that the first heat dissipation structure 203 and the second heat dissipation structure 204 may also be made of other materials with good thermal conductivity.

[0077] In some embodiments, Figure 3e and Figure 3f As shown, the first strip structure 201 includes a first portion C, which is located between the end of the first strip structure 201 and the intersection with the second strip structure 202; the second strip structure 202 includes a second portion D, which is located between the end of the second strip structure 202 and the intersection with the first strip structure 201; the orthographic projection shape of the first portion C and the second portion D on the display panel 1 includes a wave shape; the width m1 of the orthographic projection of the first portion C on the display panel 1 is smaller than the width m2 of the orthographic projection of other portions of the first strip structure 201 on the display panel 1; the width n1 of the orthographic projection of the second portion D on the display panel 1 is smaller than the width n2 of the orthographic projection of other portions of the second strip structure 202 on the display panel 1.

[0078] Among them, the wavy first part C and the second part D make the first bar structure 201 and the second bar structure 202 have spring-like elastic properties. By adjusting the width and shape of the first part C and the second part D, the elastic properties of the first bar structure 201 and the second bar structure 202 can be enhanced, thereby enhancing the rebound force performance of the first bar structure 201 and the second bar structure 202, and then optimizing the bending feel of the display module.

[0079] In some embodiments, Figure 4a As shown, a third groove E is formed at a side of the intersection area of ​​the first strip structure 201 and the second strip structure 202 close to or away from the display panel 1; or Figure 4b As shown, a plurality of through holes F are provided in the intersection region of the first strip structure 201 and the second strip structure 202 , and the plurality of through holes F are evenly distributed in the intersection region of the first strip structure 201 and the second strip structure 202 .

[0080] Among them, since the orthographic projection of the intersection area of ​​the first strip structure 201 and the second strip structure 202 on the display panel 1 is located in the bending area 101, by opening a third groove E or a plurality of through holes F in the intersection area of ​​the first strip structure 201 and the second strip structure 202, the area corresponding to the bending area 101 of the display module can have good bending performance, thereby optimizing the bending feel of the display module.

[0081] In some embodiments, Figure 5a and Figure 5b As shown, the orthographic projection shape of the distribution area of ​​the third groove E or the plurality of through holes F on the display panel 1 includes a spindle shape (a structure similar to an ellipse, i.e., a shape with small longitudinal dimensions at both ends and a large longitudinal dimension in the middle) or a straight line shape. Such an arrangement can further enable the area corresponding to the bending area 101 of the display module to have good bending performance, thereby further optimizing the bending feel of the display module and improving the anti-drop capability of the display module.

[0082] In some embodiments, the materials of the first strip-shaped structures 201 and the second strip-shaped structures 202 include metal materials; and the thickness of the first strip-shaped structures 201 and the second strip-shaped structures 202 is in the range of 10 μm or more.

[0083] Among them, metal materials include titanium alloy, SUS (stainless steel), iron, iron alloy, diamond aluminum, etc. The first strip structure 201 and the second strip structure 202 of the metal material can improve the conductivity of the first support layer 2, which is conducive to conducting the static electricity on the back side of the display panel 1 to the ground through the first support layer 2, thereby improving the performance of the display module and the anti-drop ability of the display module.

[0084] In this embodiment, Figure 3a and Figure 3b As shown, the thickness of the first support layer 2 is less than 50 μm. Figure 2a and Figure 2b In the solution, the thickness of the first supporting layer 2 is relatively small, so the third groove or multiple through holes may not be provided in the area of ​​the first supporting layer 2 corresponding to the bending area 101. Figure 3c and Figure 3d As shown, the thickness of the first support layer 2 is greater than 100 μm, so that it is convenient to open grooves in the first strip structure 201 and the second strip structure 202 to accommodate the heat dissipation structure. Figure 3e and Figure 3f As shown, the thickness of the first supporting layer 2 is greater than 100 μm, and this thickness setting is beneficial to improving the traction of the first portion C and the second portion D.

[0085] In some embodiments, Figure 3a-3fAs shown, the first supporting layer 2 also includes a first adhesive layer 205, which is located between the first strip structure 201 and the display panel 1 and between the second strip structure 202 and the display panel 1. The orthographic projection of the first adhesive layer 205 on the display panel 1 is located within the orthographic projection area of ​​the first strip structure 201 and the second strip structure 202 on the display panel 1. The orthographic projection of the intersection of the first adhesive layer 205 and the first strip structure 201 and the second strip structure 202 on the display panel 1 does not overlap, and the first adhesive layer 205 at least overlaps with the orthographic projection of the end portions of the first strip structure 201 and the second strip structure 202 on the display panel 1.

[0086] The first adhesive layer 205 is provided to attach the first support layer 2 to the back side of the display panel 1. The cross positions of the first adhesive layer 205, the first strip structure 201 and the second strip structure 202 do not overlap in their orthographic projections on the display panel 1, which can ensure that the bending area 101 of the display module has good bending performance, thereby improving the bending feel of the display module.

[0087] In some embodiments, the thickness of the first adhesive layer 205 ranges from 20 to 30 μm; the viscosity of the first adhesive layer 205 is greater than 2000 gf / inch. For example, the thickness of the first adhesive layer 205 is 25 μm. The first adhesive layer 205 can be made of any adhesive material with such viscosity, such as transparent optical adhesive. The first adhesive layer 205 also has a certain buffering property, which can improve the anti-drop ability of the display module.

[0088] In some embodiments, Figure 3c and Figure 3d As shown, the first supporting layer 2 also includes a second adhesive layer 206, which is located between the first groove A and the first heat dissipation structure 203 and between the second groove B and the second heat dissipation structure 204. The orthographic projection of the second adhesive layer 206 on the display panel 1 is located within the orthographic projection area of ​​the first heat dissipation structure 203 and the second heat dissipation structure 204 on the display panel 1. The orthographic projection of the second adhesive layer 206 and the intersection of the first strip structure 201 and the second strip structure 202 on the display panel 1 does not overlap, and the second adhesive layer 206 at least overlaps with the orthographic projection of the ends of the first heat dissipation structure 203 and the second heat dissipation structure 204 on the display panel 1.

[0089] The second adhesive layer 206 can achieve the bonding between the strip structure and the heat dissipation structure. The cross positions of the second adhesive layer 206, the first strip structure 201 and the second strip structure 202 do not overlap in their orthographic projections on the display panel 1, which can ensure that the bending area 101 of the display module has good bending performance, thereby improving the bending feel of the display module.

[0090] In some embodiments, the second adhesive layer 206 may be made of any adhesive material having such adhesive properties, such as transparent optical adhesive.

[0091] In some embodiments, Figure 2a and Figure 2c As shown, the display module also includes a second supporting layer 3, which is located between the display panel 1 and the first supporting layer 2, and the second supporting layer 3 covers the back side of the display panel 1, the bending area 101 includes a first sub-area 101a, a second sub-area 101b and a third sub-area 101c, the second sub-area 101b is located between the first sub-area 101a and the third sub-area 101c and the three are connected in sequence, the first sub-area 101a is connected to the first flattening area 100, and the third sub-area 101c is connected to the second flattening area 102, the thickness of the second supporting layer 3 overlapping with the first sub-area 101a and the third sub-area 101c is less than the thickness of other areas of the second supporting layer 3, and a plurality of holes are opened in the area of ​​the second supporting layer 3 overlapping with the second sub-area 101b, and the plurality of holes are evenly distributed.

[0092] The multiple holes are evenly distributed, such as the multiple holes are arranged in an array, and the spacing between any two adjacent holes is equal along the row direction and the column direction of the array. The second supporting layer 3 can support the entire back side of the display panel 1. The thickness setting of the second supporting layer 3 corresponding to the first sub-area 101a and the third sub-area 101c and the setting of the multiple holes corresponding to the second sub-area 101b can ensure that the bending area 101 of the display module has good bending performance, thereby improving the bending feel of the display module.

[0093] In some embodiments, the second supporting layer 3 is made of titanium alloy, SUS (stainless steel), iron, iron alloy or carbon fiber.

[0094] In some embodiments, the second supporting layer 3 is bonded to the first supporting layer 2 through the first bonding layer 205. In some embodiments, the second supporting layer 3 and the first supporting layer 2 can also be bonded together at the supplier, and after receiving the materials, the integrated structure is bonded to the back side of the display panel 1.

[0095] In some embodiments, Figure 2c As shown, the display module also includes a back film 4, a polarizer 5, an optical adhesive layer 6 and a cover plate 7. The back film 4 is located between the display panel 1 and the second supporting layer 3, and is used to dissipate heat and protect the back side of the display panel 1; the polarizer 5 is located on the display side of the display panel 1, and is used to improve or avoid the display panel 1 reflecting external ambient light; the optical adhesive layer 6 is used to adhere the cover plate 7 to the display side of the display panel 1; the cover plate 7 can cover and protect the display side of the display panel 1.

[0096] The display module provided in the present embodiment has a strip structure with a rebound force that can restore its original shape when it is bent along with the bending area of ​​the display panel. By extending the orthographic projection of the strip structure on the display panel from the bending area to the corner positions of the first flattening area and the second flattening area away from the bending area, in the process of the bending area of ​​the display panel changing from a bent state to a flattened state, the rebound force of the strip structure will pull itself to restore its original shape in the flattened state, thereby pulling the corner position of the display panel so that the creases of the display panel in the bent state are completely flattened, and then the display panel can be restored from the bent state to the completely flattened state, thereby ultimately improving the display effect of the display module.

[0097] In a second aspect, an embodiment of the present disclosure further provides a display device, comprising the display module in the above embodiment.

[0098] By adopting the display module in the above embodiment, the fold marks of the display device can be completely flattened during the process of bending and unfolding, thereby ultimately improving the display effect of the display device.

[0099] The display device provided in the embodiments of the present disclosure may be any product or component with a display function, such as an OLED panel, an OLED TV, an OLED billboard, a display, a mobile phone, a navigator, or the like.

[0100] It is to be understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of the present disclosure, but the present disclosure is not limited thereto. For those of ordinary skill in the art, various modifications and improvements can be made without departing from the spirit and substance of the present disclosure, and these modifications and improvements are also considered to be within the scope of protection of the present disclosure.

Claims

1. A display module, comprising a display panel, wherein the display panel has a display side and a back side, the display side and the back side are opposite to each other, the display panel comprises a first flattening area, a bending area and a second flattening area, the bending area is located between the first flattening area and the second flattening area, and the bending area is connected to the first flattening area and the second flattening area respectively; It is characterized in that It also includes a first supporting layer, which is located on the back side of the display panel. The first supporting layer includes more than two strip structures, and the orthographic projections of the strip structures on the display panel extend from the bending area to corners of the first flattened area away from the bending area and to corners of the second flattened area away from the bending area.

2. The display module according to claim 1, characterized in that: The first supporting layer includes a first strip structure and a second strip structure, The first strip structure and the second strip structure intersect, and the orthographic projection of the intersection position on the display panel is located in the bending area, The ends of the first strip-shaped structure are located at a pair of diagonal positions consisting of a corner of the first flattened area and a corner of the second flattened area. The end of the second strip-shaped structure is located at another pair of diagonal positions formed by another corner of the first flattened area and another corner of the second flattened area.

3. The display module according to claim 2, characterized in that: A first groove is formed on a side of the first strip structure away from the display panel, and a second groove is formed on a side of the second strip structure away from the display panel. The first supporting layer further includes a first heat dissipation structure and a second heat dissipation structure, wherein the first heat dissipation structure is located in the first groove, and the second heat dissipation structure is located in the second groove.

4. The display module according to claim 3, characterized in that: The first heat dissipation structure and the first strip structure have a surface that is flush with a surface on a side that is away from the display panel. The second heat dissipation structure is flush with a surface of the second strip structure on a side facing away from the display panel.

5. The display module according to claim 4, characterized in that: A first distance is provided between the first heat dissipation structure and the side wall of the first groove, and a size range of the first distance is 0.3 to 0.6 mm; A second distance is provided between the second heat dissipation structure and the side wall of the second groove, and the second distance has a size ranging from 0.3 to 0.6 mm.

6. The display module according to claim 3, characterized in that: The material of the first heat dissipation structure and the second heat dissipation structure includes graphite.

7. The display module according to claim 2, characterized in that: The first strip-shaped structure comprises a first portion, wherein the first portion is located between an end of the first strip-shaped structure and an intersection position between the first strip-shaped structure and the second strip-shaped structure; The second strip-shaped structure comprises a second portion, and the second portion is located between an end of the second strip-shaped structure and an intersection position between the second strip-shaped structure and the first strip-shaped structure; The orthographic projection shapes of the first portion and the second portion on the display panel include a wave shape; The width of the orthographic projection of the first portion on the display panel is smaller than the width of the orthographic projection of other portions of the first strip structure on the display panel; A width of an orthographic projection of the second portion on the display panel is smaller than a width of an orthographic projection of other portions of the second strip-shaped structure on the display panel.

8. The display module according to any one of claims 2 to 7, characterized in that: A third groove is formed at a side of the intersection area of ​​the first strip structure and the second strip structure close to or away from the display panel; Alternatively, a plurality of through holes are provided in the intersection region of the first strip structure and the second strip structure, and the plurality of through holes are evenly distributed in the intersection region of the first strip structure and the second strip structure.

9. The display module according to claim 8, characterized in that: The orthographic projection shape of the distribution area of ​​the third groove or the plurality of through holes on the display panel includes a spindle shape or a straight line shape.

10. The display module according to claim 2, characterized in that: The materials of the first strip-shaped structure and the second strip-shaped structure include metal materials; The thickness of the first stripe structure and the second stripe structure is in the range of 10 μm or more.

11. The display module according to claim 2, characterized in that: The first supporting layer further includes a first adhesive layer, which is located between the first strip structure and the display panel and between the second strip structure and the display panel. The orthographic projection of the first adhesive layer on the display panel is located within the orthographic projection area of ​​the first strip structure and the second strip structure on the display panel. The first adhesive layer does not overlap with the orthographic projection of the intersection of the first strip structure and the second strip structure on the display panel, and the first adhesive layer at least overlaps with the orthographic projection of the end portions of the first strip structure and the second strip structure on the display panel.

12. The display module according to claim 11, characterized in that: The thickness of the first bonding layer ranges from 20 to 30 μm; The viscosity of the first adhesive layer is greater than 2000 gf / inch.

13. The display module according to claim 3, characterized in that: The first supporting layer further includes a second bonding layer located between the first groove and the first heat dissipation structure and between the second groove and the second heat dissipation structure. The orthographic projection of the second adhesive layer on the display panel is located in the orthographic projection area of ​​the first heat dissipation structure and the second heat dissipation structure on the display panel. The second adhesive layer does not overlap with the orthographic projection of the intersection of the first strip structure and the second strip structure on the display panel, and the second adhesive layer at least overlaps with the orthographic projection of the ends of the first heat dissipation structure and the second heat dissipation structure on the display panel.

14. The display module according to claim 1, characterized in that: The display panel further comprises a second supporting layer, which is located between the display panel and the first supporting layer, and the second supporting layer covers the back side of the display panel. The bending area includes a first sub-area, a second sub-area and a third sub-area, the second sub-area is located between the first sub-area and the third sub-area and the three are connected in sequence, the first sub-area is connected to the first flattened area, and the third sub-area is connected to the second flattened area. The thickness of the region of the second supporting layer overlapping the first sub-region and the third sub-region is smaller than the thickness of other regions of the second supporting layer. A plurality of holes are formed in a region of the second supporting layer that overlaps with the second sub-region, and the plurality of holes are evenly distributed.

15. A display device, characterized in that: A display module comprising any one of claims 1-14.

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