Display module and display device

Abstract

The invention provides a display module and a display device, and the display module comprises a display screen which is provided with a display surface and a back surface which are opposite to each other, and the display screen comprises at least one bending area; the middle frame is arranged on the back surface of the display screen; the first bonding structure is bonded between the back surface of the display screen and the middle frame; wherein the first bonding structure comprises a plurality of bonding parts, and the multiple bonding parts are arranged at intervals in the first direction; wherein the first direction is the length direction of the display screen in the unfolded state. According to the display module, the first bonding structure is bonded between the back face of the display screen and the middle frame, the first bonding structure comprises the multiple bonding parts, and the multiple bonding parts are arranged at intervals in the length direction of the display screen in the unfolded state, so that the deformability of the first bonding structure is improved; according to the display module, the shearing force generated when the film layer of the display screen is dislocated can be effectively released, reverse arching of the bending area of the display screen is avoided, and the display performance of the display module is improved.

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 development of display technology, foldable display devices have appeared on the market. Such display devices with folding function can switch the screen size by folding. For example, when in use, the foldable screen can be unfolded to obtain a larger display size to enhance the experience. When not in use, the screen size of the foldable screen can be reduced by folding for easy carrying.

[0003] However, current folding screens are prone to arch problems, increasing the risk of screen failure. Summary of the invention

[0004] In view of this, the purpose of the present application is to provide a display module that can avoid anti-arching and improve bending performance and display performance.

[0005] Based on the above purpose, the present application provides a display module, which includes:

[0006] A display screen having a display surface and a back surface facing each other, wherein the display screen includes at least one bending area;

[0007] A middle frame, arranged on the back of the display screen;

[0008] A first bonding structure, bonded between the back side of the display screen and the middle frame;

[0009] Wherein, the first bonding structure includes a plurality of bonding portions, and the plurality of bonding portions are arranged at intervals along a first direction; wherein, the first direction is a length direction of the display screen in an unfolded state.

[0010] In one embodiment, along the first direction, the distance between two adjacent bonding portions is less than or equal to 20 mm;

[0011] Preferably, along the first direction, the ratio of the distance between two adjacent bonding portions to the length of the display screen after unfolding is less than or equal to 1 / 8.

[0012] In one embodiment, the dimension of the adhesive portion in the second direction is greater than or equal to 50 mm, and the second direction is the width direction of the display screen in the unfolded state;

[0013] And / or, the dimension of the bonding portion in the first direction is less than or equal to 10 mm;

[0014] And / or, the modulus of the bonding portion is less than or equal to 500 KPa;

[0015] And / or, the thickness of the bonding portion is greater than or equal to 0.15 mm.

[0016] In one embodiment, the display screen includes a screen body and a supporting structure, the supporting structure is located on a side of the screen body close to the middle frame, the first bonding structure is arranged between the supporting structure and the middle frame, the supporting structure includes a plurality of supporting portions arranged corresponding to the bonding portion, and the plurality of supporting portions are arranged at intervals along the first direction;

[0017] A compressible space is formed between two adjacent support parts, and the support structure further comprises a compressible structure, and the compressible structure is located in the compressible space; along the first direction, two adjacent support parts are connected by the compressible structure;

[0018] Preferably, along the first direction, the size of the compressible space is less than or equal to 0.8 mm;

[0019] Preferably, along the first direction, a first deformation space is formed between two adjacent bonding portions, and the orthographic projection of the compressible structure on the screen body is located within the orthographic projection of the first deformation space on the screen body;

[0020] Preferably, along the first direction, the size of the first deformation space is less than or equal to 20 mm;

[0021] Preferably, the material of the support structure includes metal or carbon fiber.

[0022] In one embodiment, the compressible structure includes a deformation portion and a connecting portion, and the deformation portion is connected to two adjacent support portions through the connecting portion;

[0023] Preferably, along the first direction, the size of the connecting portion is less than or equal to 0.2 mm, and the size of the deforming portion is within a range of 0.2-0.4 mm.

[0024] In one embodiment, the display module further includes a reinforcement structure, and the reinforcement structure is fitted with the compressible structure;

[0025] Preferably, the reinforcement structure is located on a side of the compressible structure close to the middle frame;

[0026] Preferably, the material of the reinforcement structure includes rubber.

[0027] In one embodiment, the display screen includes a first portion, a first bending portion, a second portion, a second bending portion, and a third portion connected in sequence, and the middle frame includes a first middle frame arranged corresponding to the first portion, a second middle frame arranged corresponding to the second portion, and a third middle frame arranged corresponding to the third portion;

[0028] The first adhesive structure is at least arranged between the first middle frame and the first part; or, the first adhesive structure is at least arranged between the third middle frame and the third part; or, the first adhesive structure is arranged between the first middle frame and the first part, between the second middle frame and the second part, and between the third middle frame and the third part.

[0029] In one embodiment, the display module further includes a first support plate, the first support plate is arranged corresponding to the first bending portion, and the first adhesive structure is further arranged between the first support plate and the first bending portion; and / or,

[0030] The display module further includes a second supporting plate, the second supporting plate is arranged corresponding to the second bending portion, and the first bonding structure is further arranged between the second supporting plate and the second bending portion;

[0031] Preferably, along the first direction, the size of the bonding portion provided between the first support plate and the first bending portion is 1-3 mm;

[0032] Preferably, along the first direction, the size of the bonding portion provided between the second supporting plate and the second bending portion is 1-3 mm;

[0033] Preferably, the first support plate comprises a first support portion and a second support portion spaced apart along the first direction, the first support portion is connected to the first middle frame, and the second support portion is connected to the second middle frame;

[0034] Preferably, the second support plate includes a third support portion and a fourth support portion which are spaced apart along the first direction, the third support portion is connected to the second middle frame, and the fourth support portion is connected to the third middle frame.

[0035] In one embodiment, the first portion may be folded inwardly or outwardly relative to the second portion via the first bending portion, and the third portion may be folded inwardly or outwardly relative to the second portion via the second bending portion.

[0036] In one embodiment, the first bending portion is in a U-shape or a teardrop shape after being bent, and the second bending portion is in a U-shape or a teardrop shape after being bent.

[0037] In one embodiment, the display module further includes a second adhesive structure, and the second adhesive structure is disposed between the second middle frame and the second portion;

[0038] The first adhesive structure is arranged between the first middle frame and the first part; when the second part and the third part are switched from the unfolded state to the folded state, the shear deformation amount of the first adhesive structure is greater than the shear deformation amount of the second adhesive structure; and / or,

[0039] The first adhesive structure is disposed between the third middle frame and the third part; when the first part and the second part are switched from an unfolded state to a folded state, the shear deformation amount of the first adhesive structure is greater than the shear deformation amount of the second adhesive structure;

[0040] Preferably, the orthographic projection of the second bonding structure on the second middle frame includes a ring shape.

[0041] In one embodiment, the display module further includes:

[0042] a base, disposed between the first bonding structure and the middle frame and bonded to the first bonding structure, the base being configured to be movable relative to the middle frame along a first direction;

[0043] Preferably, a distance within which the base and the middle frame can move relative to each other along the first direction is less than or equal to 50 um.

[0044] In one embodiment, the middle frame is provided with a first movable groove, the base is at least partially located in the first movable groove, and the base can move in the first movable groove along the first direction;

[0045] Preferably, along the first direction, the size of the first movable groove is larger than the size of the base, so as to form a movement space for the base to move;

[0046] Preferably, the middle frame is provided with a limiting portion, and the orthographic projection of the limiting portion on the middle frame is located within the orthographic projection of the first movable groove on the middle frame.

[0047] In one embodiment, the middle frame is provided with a movable portion, the base is provided with a second movable groove, the movable portion is at least partially located in the second movable groove, and the movable portion can move along the first direction in the second movable groove.

[0048] In one embodiment, the middle frame is provided with a receiving groove, and the adhesive portion is at least partially located in the receiving groove;

[0049] Along the first direction, the size of the accommodating groove is larger than the size of the corresponding bonding portion, so as to form a second deformation space for the bonding portion to deform;

[0050] Preferably, the depth of the receiving groove is 150um-250um.

[0051] Based on the same inventive concept, the present application also discloses a display module, which includes:

[0052] A display screen having a display surface and a back surface facing each other, the display screen comprising a first portion, a first bending portion, a second portion, a second bending portion and a third portion connected in sequence, the first portion and the second portion being folded or unfolded through the first bending portion, and the second portion and the third portion being folded or unfolded through the second bending portion;

[0053] A middle frame, arranged on the back of the display screen;

[0054] A first bonding structure, bonded between the back side of the display screen and the middle frame;

[0055] When the first part and the second part switch from an unfolded state to a folded state, a shear deformation of the first bonding structure along a first direction is greater than or equal to a first threshold; wherein the first direction is a length direction of the display screen in the unfolded state.

[0056] In one embodiment, the first threshold is greater than or equal to 20 um;

[0057] In one embodiment, when the second part and the third part are switched from the unfolded state to the folded state, the shear deformation amount of the first bonding structure along the first direction is greater than or equal to a second threshold value;

[0058] Preferably, the second threshold is greater than or equal to 20 um.

[0059] In one embodiment, the first bonding structure includes a plurality of bonding portions spaced apart along the first direction, and a size of the bonding portion in the first direction is less than or equal to 10 mm;

[0060] Preferably, the modulus of the bonding portion is less than or equal to 500 KPa;

[0061] Preferably, the thickness of the bonding portion is greater than or equal to 0.15 mm, and the dimension of the bonding portion in the first direction is less than or equal to 10 mm.

[0062] In one embodiment, when the display screen is in a folded state, the second part is located between the first part and the third part; or, the first part is located between the second part and the third part; or, the third part is located between the first part and the second part.

[0063] Based on the same inventive concept, the present application also discloses a display device, which includes the above-mentioned display module.

[0064] Compared with the prior art, the display module provided by the present application, by bonding the first bonding structure between the back of the display screen and the middle frame, wherein the first bonding structure includes a plurality of bonding parts, and the plurality of bonding parts are spaced apart along the length direction of the display screen in the unfolded state, thereby improving the deformability of the first bonding structure, and can effectively release the shear force generated when the film layer of the display screen is displaced, thereby avoiding the occurrence of reverse arch in the bending zone of the display screen, and improving the display performance of the display module. BRIEF DESCRIPTION OF THE DRAWINGS

[0065] In order to more clearly illustrate the technical solutions in the present application or related technologies, the drawings required for use in the embodiments or related technical descriptions are briefly introduced below. Obviously, the drawings described below are only embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0066] Figure 1 A schematic diagram of a related display module having an anti-arch;

[0067] Figure 2 A schematic diagram of the structure of the display module in an embodiment of the present application Figure 1 ;

[0068] Figure 3 A schematic diagram of the structure of the display module in an embodiment of the present application Figure 2 ;

[0069] Figure 4 This is a schematic diagram of the structure of the display module folding in one embodiment of the present application;

[0070] Figure 5 This is a schematic diagram of a partial structure of a display module in another embodiment of the present application;

[0071] Figure 6 This is a schematic diagram of a partial structure of a display module in another embodiment of the present application;

[0072] Figure 7 This is a schematic diagram of a partial structure of a display module in another embodiment of the present application;

[0073] Figure 8 A schematic diagram showing a supporting structure of a module in another embodiment of the present application;

[0074] Fig. 9 A schematic diagram showing a supporting structure of a module in another embodiment of the present application;

[0075] Fig.10 This is a schematic diagram of a partial structure of a display module in another embodiment of the present application;

[0076] Fig.11 This is a structural schematic diagram of an unfolded display module in another embodiment of the present application;

[0077] Fig.12 This is a structural schematic diagram of an unfolded display module in another embodiment of the present application;

[0078] Fig.13 This is a structural schematic diagram showing the folding of a module in another embodiment of the present application;

[0079] Fig.14 This is a structural schematic diagram of an unfolded display module in another embodiment of the present application;

[0080] Fig.15 This is a structural schematic diagram of an unfolded display module in another embodiment of the present application;

[0081] Fig.16 This is a structural schematic diagram of an unfolded display module in another embodiment of the present application;

[0082] Fig.17 This is a structural schematic diagram showing the folding of a module in another embodiment of the present application;

[0083] Fig.18 This is a structural schematic diagram showing the folding of a module in another embodiment of the present application;

[0084] Fig.19 This is a structural schematic diagram showing the folding of a module in another embodiment of the present application;

[0085] Fig. 20 This is a structural schematic diagram showing the folding of a module in another embodiment of the present application;

[0086] Fig.21 A schematic diagram of the structure of the display module in another embodiment of the present application is shown in FIG. Figure 1 ;

[0087] Fig. 22 A schematic diagram of the structure of the display module in another embodiment of the present application is shown in FIG. Figure 2 ;

[0088] Fig.23 This is a structural schematic diagram showing the folding of a module in another embodiment of the present application;

[0089] Fig.24 This is a schematic diagram showing deformation of a bonding portion in a display module in another embodiment of the present application;

[0090] Fig.25 This is a schematic diagram of a partial structure of a display module in another embodiment of the present application;

[0091] Fig.26 This is a schematic diagram of a partial structure of a display module in another embodiment of the present application;

[0092] Fig. 27 This is a schematic diagram of a partial structure of a display module in another embodiment of the present application;

[0093] Fig.28 It is a schematic diagram of a partial structure of a display module in another embodiment of the present application.

[0094] Marking Description:

[0095] 100. Display module;

[0096] 1. display screen; 11. bending area; 12. display surface; 13. back surface; 14. screen body; 15. first part; 16. first bending portion; 17. second part; 18. second bending portion; 19. third part;

[0097] 2. middle frame; 21. first middle frame; 22. second middle frame; 23. third middle frame; 24. first movable groove; 25. movable part; 26. containing groove; 261. second deformation space; 27. limiting part;

[0098] 3. first bonding structure; 31. bonding portion; 311. first deformation space;

[0099] 4. Support structure; 41. Support part; 411. Compressible space; 42. Compressible structure; 43. Deformation part; 44. Connecting part; 45. Reinforcement structure;

[0100] 51, first support plate; 511, first support portion; 512, second support portion; 52, second support plate; 521, third support portion; 522, fourth support portion;

[0101] 6. Second bonding structure;

[0102] 7. Base; 71. Second movable groove. DETAILED DESCRIPTION

[0103] In order to make the objectives, technical solutions and advantages of the present application more clearly understood, the present application is further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.

[0104] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present application should be the usual meanings understood by people with ordinary skills in the field to which the present application belongs. The "first", "second" and similar words used in the embodiments of the present application do not represent any order, quantity or importance, but are only used to distinguish different components. "Including" or "comprising" and similar words mean that the elements or objects appearing in front of the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0105] With the development of display technology, foldable displays have become a development trend of future mobile electronic products. Display modules using foldable displays can be unfolded or folded as needed, enhancing the user experience. When the foldable display is unfolded, it can provide a larger display area and improve the display effect. When the foldable display is folded, it is convenient for users to carry and can provide a smaller display area.

[0106] Reference Figure 1 As shown, since the display screen 1 is formed by stacking multiple film layers, during the bending process, the bending radii of different film layers are different, resulting in displacement between the film layers, thereby generating shear force, resulting in an arch in the bending area 11.

[0107] Based on this, the present application provides a display module solution, see the following embodiments for details.

[0108] Reference Figure 2-Figure 4 As shown, an embodiment of the present application discloses a display module 100 , which includes a display screen 1 , a middle frame 2 and a first adhesive structure 3 .

[0109] The display screen 1 has a display surface 12 and a back surface 13 facing each other. The display screen 1 includes at least one bending area 11 . The middle frame 2 is disposed on the back surface 13 of the display screen 1 . The first adhesive structure 3 is bonded between the back surface 13 of the display screen 1 and the middle frame 2 .

[0110] The first adhesive structure 3 includes a plurality of adhesive portions 31 , and the plurality of adhesive portions 31 are arranged at intervals along a first direction (eg, X direction in the figure); wherein the first direction is the length direction of the display screen 1 in the unfolded state.

[0111] The first bonding structure 3 serves to connect the back of the display screen 1 with the middle frame 2. The middle frame 2 is used to protect the display screen 1. When the display module 100 is subjected to external forces such as collision and falling, the middle frame 2 can absorb part of the impact force to reduce damage to components such as the display screen 1. Optionally, the bonding portion 31 includes a backing adhesive, which can be acrylic adhesive or polyurethane adhesive.

[0112] The display module 100 provided in the present application is achieved by bonding the first bonding structure 3 between the back side 13 of the display screen 1 and the middle frame 2, wherein the first bonding structure 3 includes a plurality of bonding portions 31, and the plurality of bonding portions 31 are arranged at intervals along the length direction of the display screen 1 in the unfolded state, thereby improving the deformability of the first bonding structure 3 along the length direction of the display screen 1 in the unfolded state, and can effectively release the shear force generated when the film layer of the display screen 1 is displaced, thereby avoiding the occurrence of reverse arching in the bending area 11 of the display screen 1, and improving the display performance of the display module 100.

[0113] Specifically, the present application arranges the adhesive portions 31 at intervals along the first direction, and when the display screen 1 is folded, Figure 4 As shown, the film layer in the display screen 1 is displaced along the first direction, and the adhesive portion 31 is deformed along the first direction driven by the display screen 1, thereby effectively releasing the shear force generated when the film layer of the display screen 1 is displaced, avoiding the occurrence of reverse arch in the bending area 11 of the display screen 1, and improving the display performance of the display module 100.

[0114] In one embodiment, along the first direction, the distance between two adjacent bonding portions 31 is less than or equal to 20 mm, which is beneficial to ensure the flatness of the display surface 12 of the display screen 1. Figure 3 , along the first direction, the distance between two adjacent bonding portions 31 is M. Specifically, along the first direction, the distance between two adjacent bonding portions 31 can be 1 mm, 2 mm, 3 mm, 5 mm, 8 mm, 10 mm, 15 mm, 20 mm, etc., without specific limitation.

[0115] Preferably, along the first direction, the ratio of the spacing between two adjacent bonding portions 31 to the length of the display screen 1 after unfolding is less than or equal to 1 / 8, which is conducive to ensuring the flatness of the display surface 12 of the display screen 1. Specifically, along the first direction, the ratio of the spacing between two adjacent bonding portions 31 to the length of the display screen 1 after unfolding can be 1 / 20, 1 / 15, 1 / 10, 1 / 8, etc., and is not specifically limited.

[0116] Please continue to refer to Figure 3As shown, in one embodiment, the size of the adhesive portion 31 in the second direction (such as the Y direction in the figure) is greater than or equal to 50 mm, and the second direction is the width direction of the display screen 1 in the unfolded state. Among them, the size of the adhesive portion 31 in the second direction is greater than or equal to 50 mm, which is conducive to reducing the deformability of the adhesive portion 31 along the second direction, avoiding the displacement of the display screen 1 relative to the middle frame 2 in the second direction, and ensuring the stability of the display module 100 structure.

[0117] Furthermore, in order to improve the deformability of the first bonding structure 3 along the first direction, the bonding portion 31 needs to meet at least one of the following three conditions:

[0118] Condition 1: The size of the bonding portion 31 in the first direction is less than or equal to 10 mm; Figure 3 , the size of the bonding portion 31 in the first direction is N. The smaller the size of the bonding portion 31 in the first direction, the stronger the deformability of the first bonding structure 3 in the first direction. Specifically, the size of the bonding portion 31 in the first direction can be 10 mm, 9 mm, 8 mm, 7 mm, 6 mm, 5 mm, 4 mm, 3 mm, 2 mm, etc., and is not specifically limited.

[0119] Condition 2: The modulus of the bonding portion 31 is less than or equal to 500Kpa; wherein, the smaller the modulus of the bonding portion 31, the stronger the deformability of the first bonding structure 3 in the first direction. Specifically, the modulus of the bonding portion 31 can be 500Kpa, 450Kpa, 300Kpa, 250Kpa, 200Kpa, 150Kpa, 100Kpa, 50Kpa, etc., without specific limitation.

[0120] Condition 3: The thickness of the bonding portion 31 (in the Z direction in the figure) is greater than or equal to 0.15 mm; wherein, the greater the thickness of the bonding portion 31, the greater the deformability of the first bonding structure 3 in the first direction. Specifically, the thickness of the bonding portion 31 can be 0.15 mm, 0.16 mm, 0.18 mm, 0.2 mm, 0.25 mm, 0.3 mm, 0.35 mm, 0.4 mm, 0.45 mm, 0.5 mm, etc., without specific limitation.

[0121] Please refer to Figure 5 As shown, in one embodiment, the middle frame 2 is provided with a receiving groove 26, and the bonding portion 31 is at least partially located in the receiving groove 26; along the first direction, the size of the receiving groove 26 is larger than the size of the corresponding bonding portion 31, so as to form a second deformation space 261 for the bonding portion 31 to deform. Among them, the middle frame 2 is provided with the receiving groove 26, which is conducive to reducing the overall thickness of the display module 100, or, under the condition of meeting the overall thickness requirement of the display module 100, increasing the thickness of the bonding portion 31, and improving the deformability of the first bonding structure 3 in the first direction.

[0122] Preferably, the depth of the receiving groove 26 is 150um-250um to avoid excessive depth affecting the structural strength of the middle frame 2. Specifically, the depth of the receiving groove 26 is 150um, 180um, 200um, 220um, 250um, etc., which is not specifically limited.

[0123] Please refer to Figure 6 As shown, in one embodiment, the display screen 1 includes a screen body 14 and a supporting structure 4, the supporting structure 4 is located on a side of the screen body 14 close to the middle frame 2, the first bonding structure 3 is arranged between the supporting structure 4 and the middle frame 2, and the supporting structure 4 includes a plurality of supporting portions 41 arranged corresponding to the bonding portions 31, and the plurality of supporting portions 41 are arranged at intervals along the first direction.

[0124] A compressible space 411 is formed between two adjacent support portions 41 . The support structure 4 further includes a compressible structure 42 . The compressible structure 42 is located in the compressible space 411 . Along the first direction, two adjacent support portions 41 are connected via the compressible structure 42 .

[0125] Specifically, when the display screen 1 is folded, the compressible structure 42 is compressed along the first direction. At this time, the screen body 14 is deformed along the thickness direction, thereby effectively releasing the shear force generated when the film layer of the display screen 1 is displaced, increasing the shear force release path, further avoiding the occurrence of reverse arching in the bending area 11 of the display screen 1, and improving the display performance of the display module 100.

[0126] Preferably, along the first direction, the size Q of the compressible space 411 is less than or equal to 0.8 mm, which is conducive to ensuring the flatness of the display surface 12 of the display screen 1. Specifically, along the first direction, the size of the compressible space 411 can be 0.3 mm, 0.4 mm, 0.5 mm, 0.55 mm, 0.6 mm, 0.65 mm, 0.7 mm, 0.75 mm, 0.8 mm, etc., without specific limitation.

[0127] Please continue to refer to Figure 6 As shown, in one embodiment, along the first direction, a first deformation space 311 is formed between two adjacent bonding portions 31, and the orthographic projection of the compressible structure 42 on the screen body 14 is located within the orthographic projection of the first deformation space 311 on the screen body 14. Figure 7 As shown, when the display screen 1 is folded, the compressible structure 42 is compressed along the first direction, and the compressible space 411 is compressed at the same time. At this time, the screen body 14 corresponding to the first deformation space 311 is deformed into the first deformation space 311, thereby effectively releasing the shear force generated when the film layer of the display screen 1 is displaced, thereby avoiding the occurrence of reverse arch in the bending area 11 of the display screen 1.

[0128] Preferably, along the first direction, the size S of the first deformation space 311 is less than or equal to 20 mm, which is conducive to ensuring the flatness of the display surface 12 of the display screen 1. Specifically, along the first direction, the size of the first deformation space 311 can be 1 mm, 2 mm, 3 mm, 5 mm, 8 mm, 10 mm, 15 mm, 20 mm, etc., without specific limitation.

[0129] Preferably, the material of the support structure 4 includes metal or carbon fiber, etc., to ensure sufficient strength, achieve stable support for the screen body 14, and improve the flatness of the display surface 12 of the display screen 1.

[0130] Please refer to Figure 8 and 9 As shown, in one embodiment, the compressible structure 42 includes a deformation portion 43 and a connecting portion 44, and the deformation portion 43 is connected to two adjacent support portions 41 through the connecting portion 44. Figure 7 is the state when the compressible structure 42 is not compressed, Figure 8 This is the state when the compressible structure 42 is compressed. When the display screen 1 is folded, the squeezing force on the support structure 4 is transmitted to the deformation portion 43 through the connecting portion 44, causing the deformation portion 43 to be compressed and deformed. When the display screen 1 is unfolded, the deformation portion 43 returns to the uncompressed state.

[0131] Preferably, along the first direction, the size of the connecting portion 44 is less than or equal to 0.2 mm, and the size of the deforming portion 43 is 0.2-0.4 mm, which is conducive to ensuring the flatness of the display surface 12 of the display screen 1. Specifically, along the first direction, the size of the connecting portion 44 can be 0.05 mm, 0.08 mm, 0.1 mm, 0.12 mm, 0.15 mm, 0.16 mm, 0.18 mm, 0.2 mm, etc., and the size of the deforming portion 43 can be 0.2 mm, 0.22 mm, 0.25 mm, 0.28 mm, 0.3 mm, 0.35 mm, 0.4 mm, etc., and there is no specific limitation.

[0132] Please refer to Fig.10 As shown, in one embodiment, the display module 100 further includes a reinforcing structure 45, and the reinforcing structure 45 is attached to the compressible structure 42. The reinforcing structure 45 is used to strengthen the strength of the compressible structure 42 to prevent the compressible structure 42 from being damaged during repeated compression and expansion.

[0133] Preferably, the reinforcing structure 45 is located on the side of the compressible structure 42 close to the middle frame 2. There is a first deformation space 311 on the side of the compressible structure 42 close to the middle frame 2. Therefore, by arranging the reinforcing structure 45 on the side of the compressible structure 42 close to the middle frame 2, the reinforcing structure 45 can be prevented from affecting the flatness of the display surface 12 of the display screen 1.

[0134] Preferably, the material of the reinforcement structure 45 is rubber. In other embodiments, the material of the reinforcement structure 45 can be polyurethane, silicone, etc.

[0135] Please refer to Fig.11 and 12 As shown, in one embodiment, the display screen 1 includes a first part 15, a first bending portion 16, a second part 17, a second bending portion 18 and a third part 19 connected in sequence, and the middle frame 2 includes a first middle frame 21 arranged corresponding to the first part 15, a second middle frame 22 arranged corresponding to the second part 17, and a third middle frame 23 arranged corresponding to the third part 19.

[0136] The first adhesive structure 3 is disposed between the first middle frame 21 and the first part 15, between the second middle frame 22 and the second part 17, and between the third middle frame 23 and the third part 19. When one of the first bending portion 16 and the second bending portion 18 is folded, the first adhesive structures 3 corresponding to different parts are deformed along the first direction, so that the shear force generated when the film layer of the display screen 1 is displaced can be effectively released synchronously from two opposite directions.

[0137] In another embodiment, the first adhesive structure 3 is arranged between the first middle frame 21 and the first part 15, the first adhesive structure 3 is not arranged between the second middle frame 22 and the second part 17, and the first adhesive structure 3 is not arranged between the third middle frame 23 and the third part 19. When one of the first bending portion 16 and the second bending portion 18 is folded, the adhesive portion 31 is deformed along the first direction. At this time, the first part 15 and the first middle frame 21 are slightly misaligned along the first direction, thereby effectively releasing the shear force generated when the film layer of the display screen 1 is displaced, thereby avoiding the other of the first bending portion 16 and the second bending portion 18 from being reversely arched.

[0138] In another embodiment, the first adhesive structure 3 is arranged between the third middle frame 23 and the third part 19, the first adhesive structure 3 is not arranged between the first middle frame 21 and the first part 15, and the first adhesive structure 3 is not arranged between the second middle frame 22 and the second part 17. When one of the first bending portion 16 and the second bending portion 18 is folded, the adhesive portion 31 is deformed along the first direction. At this time, the third part 19 and the third middle frame 23 are slightly misaligned along the first direction, thereby effectively releasing the shear force generated when the film layer of the display screen 1 is displaced, thereby avoiding the other of the first bending portion 16 and the second bending portion 18 from being reversely arched.

[0139] In another embodiment, the first adhesive structure 3 is disposed between the first middle frame 21 and the first portion 15 , between the second middle frame 22 and the second portion 17 , and the first adhesive structure 3 is not disposed between the third middle frame 23 and the third portion 19 .

[0140] In another embodiment, the first adhesive structure 3 is disposed between the second middle frame 22 and the second part 17 and between the third middle frame 23 and the third part 19. The first middle frame 21 and the first part 15 are not provided with the first adhesive structure 3, which can also achieve the effect of releasing shear force.

[0141] For example, refer to Fig.13 As shown, when the first bending portion 16 is folded, the first bonding structures 3 corresponding to the first part 15, the second part 17 and the third part 19 are all deformed along the first direction. At this time, the first part 15 is misaligned with the first middle frame 21, releasing the shear force generated when a part of the film layer is dislocated. At the same time, the second part 17 and the third part 19 are misaligned with the second middle frame 22 and the third middle frame 23, releasing the shear force generated when a part of the film layer is dislocated, which is equivalent to releasing the shear force from both ends of the display screen 1 along the first direction at the same time.

[0142] Please refer to Figure 14-16 As shown, in one embodiment, the display module 100 further includes a first support plate 51, which is disposed corresponding to the first bending portion 16, and the first adhesive structure 3 is further disposed between the first support plate 51 and the first bending portion 16. The first support plate 51 plays a role in supporting the first bending portion 16, and disposing the first adhesive structure 3 between the first support plate 51 and the first bending portion 16 is conducive to increasing the flatness of the first bending portion 16, and can prevent the first bending portion 16 from being too large in the first direction and affecting the flatness of the first bending portion 16.

[0143] Preferably, the first support plate 51 has a first support portion 511 and a second support portion 512 spaced apart along the first direction, the first support portion 511 is connected to the first middle frame 21, and the second support portion 512 is connected to the second middle frame 22. The first support portion 511 and the second support portion 512 are spaced apart to facilitate bending of the first bending portion 16. Furthermore, a first adhesive structure 3 is provided between the first support portion 511 and the first bending portion 16, and between the second support portion 512 and the first bending portion 16.

[0144] In another embodiment, the display module 100 includes a second support plate 52, the second support plate 52 is arranged corresponding to the second bending portion 18, and the first adhesive structure 3 is also arranged between the second support plate 52 and the second bending portion 18. The second support plate 52 plays a role in supporting the second bending portion 18, and the first adhesive structure 3 is arranged between the second support plate 52 and the second bending portion 18 to increase the flatness of the second bending portion 18, and to avoid the second bending portion 18 being too large in size in the first direction and affecting the flatness of the second bending portion 18.

[0145] Preferably, the third support portion 521 and the fourth support portion 522 are arranged at intervals along the first direction of the second support plate 52, the third support portion 521 is connected to the second middle frame 22, and the fourth support portion 522 is connected to the third middle frame 23. The third support portion 521 and the fourth support portion 522 are arranged at intervals to facilitate the bending of the second bending portion 18. Further, the first adhesive structure 3 is arranged between the third support portion 521 and the second bending portion 18, and between the fourth support portion 522 and the second bending portion 18.

[0146] In another embodiment, the display module 100 includes a first support plate 51 and a second support plate 52 at the same time. A first adhesive structure 3 is arranged between the first support plate 51 and the first bending portion 16, and a first adhesive structure 3 is arranged between the second support plate 52 and the second bending portion 18, which is beneficial to ensure the flatness of the entire display screen 1.

[0147] Preferably, along the first direction, the size of the bonding portion 31 disposed between the first support plate 51 and the first bending portion 16 is 1-3 mm, which is conducive to the bending of the first bending portion 16. Among them, since the first bending portion 16 needs to be bent, the size of the corresponding bonding portion 31 should not be too large. Specifically, the size of the bonding portion 31 between the first support plate 51 and the first bending portion 16 is 1 mm, 1.5 mm, 1.8 mm, 2 mm, 2.5 mm, 3 mm, etc., which is not specifically limited.

[0148] Preferably, along the first direction, the size of the bonding portion 31 disposed between the second support plate 52 and the second bending portion 18 is 1-3 mm, which is conducive to the bending of the second bending portion 18. Among them, since the second bending portion 18 needs to be bent, the size of the corresponding bonding portion 31 should not be too large. Specifically, the size of the bonding portion 31 between the second support plate 52 and the second bending portion 18 is 1 mm, 1.5 mm, 1.8 mm, 2 mm, 2.5 mm, 3 mm, etc., which is not specifically limited.

[0149] Please refer to Fig.17 As shown, in one embodiment, the first portion 15 can be folded inward relative to the second portion 17 through the first bending portion 16, and the third portion 19 can be folded inward relative to the second portion 17 through the second bending portion 18. At this time, the first portion 15 is folded inward first, and the third portion 19 is folded inward later, and the folded first portion 15 is located between the second portion 17 and the third portion 19. In another embodiment, the third portion 19 is folded inward first, and the first portion 15 is folded inward later, and the folded third portion 19 is located between the first portion 15 and the second portion 17. Preferably, the first bending portion 16 is in a teardrop shape after being bent, and the second bending portion 18 is in a U shape after being bent.

[0150] Please refer to Fig.18As shown, in one embodiment, the first portion 15 can be folded inwardly relative to the second portion 17 via the first bending portion 16, and the third portion 19 can be folded outwardly relative to the second portion 17 via the second bending portion 18. At this time, the folding order of the first portion 15 and the third portion 19 can be in any order, and the folded second portion 17 is located between the first portion 15 and the third portion 19. Preferably, the first bending portion 16 is in a teardrop shape after being bent, and the second bending portion 18 is in a U shape after being bent.

[0151] Please refer to Fig.19 As shown, in one embodiment, the first portion 15 can be folded outward relative to the second portion 17 through the first bending portion 16, and the third portion 19 can be folded inward relative to the second portion 17 through the second bending portion 18. At this time, the folding order of the first portion 15 and the third portion 19 can be in any order, and the folded second portion 17 is located between the first portion 15 and the third portion 19. Preferably, the first bending portion 16 is U-shaped after being bent, and the second bending portion 18 is teardrop-shaped after being bent.

[0152] Please refer to Fig. 20 As shown, in one embodiment, the first portion 15 can be folded outward relative to the second portion 17 through the first bending portion 16, and the third portion 19 can be folded outward relative to the second portion 17 through the second bending portion 18. At this time, the third portion 19 is folded outward first, and the first portion 15 is folded outward later, and the folded third portion 19 is located between the second portion 17 and the first portion 15. In another embodiment, the first portion 15 is folded outward first, and the third portion 19 is folded outward later, and the folded first portion 15 is located between the third portion 19 and the second portion 17. Preferably, the first bending portion 16 is U-shaped after being bent, and the second bending portion 18 is U-shaped after being bent.

[0153] It should be noted that, with the second portion 17 as a reference, the inward folding refers to folding toward the display surface of the second portion 17 , and the outward folding refers to folding toward the back surface of the second portion 17 .

[0154] Please refer to Figure 21-23 As shown, in one embodiment, the display module 100 further includes a second adhesive structure 6, the second adhesive structure 6 is disposed between the second middle frame 22 and the second part 17, and the first adhesive structure 3 is disposed between the first middle frame 21 and the first part 15; when the second part 17 and the third part 19 are switched from the unfolded state to the folded state, the shear deformation of the first adhesive structure 3 is greater than the shear deformation of the second adhesive structure 6; at the same time, the first adhesive structure 3 is disposed between the third middle frame 23 and the third part 19; when the first part 15 and the second part 17 are switched from the unfolded state to the folded state, the shear deformation of the first adhesive structure 3 is greater than the shear deformation of the second adhesive structure 6. Optionally, the second adhesive structure 6 includes a backing adhesive, which can be acrylic adhesive or polyurethane adhesive.

[0155] Please refer to Fig.24 As shown, the shear deformation of the first adhesive structure 3 refers to: the relative displacement d between the two surfaces on the adhesive portion 31 respectively connected to the display screen 1 and the middle frame 2, which can be obtained by direct measurement. When the display screen 1 is unfolded, the relative displacement d between the two surfaces on the adhesive portion 31 respectively connected to the display screen 1 and the middle frame 2 is 0, that is, the shear deformation of the first adhesive structure 3 is 0. Similarly, the shear deformation of the second adhesive structure 6 refers to: the relative displacement between the two surfaces on the second adhesive structure 6 respectively connected to the display screen 1 and the middle frame 2. When the display screen 1 is unfolded, the shear deformation of the second adhesive structure 6 is 0. Further, it can be understood that: in the first direction, the deformability of the first adhesive structure 3 is stronger than the deformability of the second adhesive structure 6.

[0156] Among them, when the second part 17 and the third part 19 are switched from the unfolded state to the folded state, the shear deformation of the first adhesive structure 3 is greater than the shear deformation of the second adhesive structure 6, and the shear force generated when the film layer of the display screen 1 is displaced can be effectively released in a direction away from the first bending portion 16 through the first adhesive structure 3 disposed between the first middle frame 21 and the first part 15. At the same time, when the first part 15 and the second part 17 are switched from the unfolded state to the folded state, the shear deformation of the first adhesive structure 3 is greater than the shear deformation of the second adhesive structure 6, and the shear force generated when the film layer of the display screen 1 is displaced can be effectively released in a direction away from the second bending portion 18 through the first adhesive structure 3 disposed between the third middle frame 23 and the third part 19.

[0157] In another embodiment, the second adhesive structure 6 is disposed between the second middle frame 22 and the second portion 17, the first adhesive structure 3 is disposed between the first middle frame 21 and the first portion 15, and the first adhesive structure 3 is not disposed between the third middle frame 23 and the third portion 19; when the second portion 17 and the third portion 19 are switched from the unfolded state to the folded state, the shear deformation of the first adhesive structure 3 is greater than the shear deformation of the second adhesive structure 6. When the display screen 1 is folded, the first adhesive structure 3 effectively releases the shear force generated when the film layer of the display screen 1 is displaced to a direction away from the first bending portion 16.

[0158] In another embodiment, the first adhesive structure 3 is disposed between the third middle frame 23 and the third portion 19, and the first adhesive structure 3 is not disposed between the first middle frame 21 and the first portion 15; when the first portion 15 and the second portion 17 are switched from the unfolded state to the folded state, the shear deformation of the first adhesive structure 3 is greater than the shear deformation of the second adhesive structure 6. When the display screen 1 is folded, the first adhesive structure 3 effectively releases the shear force generated when the film layer of the display screen 1 is displaced in a direction away from the second bending portion 18.

[0159] In another embodiment, the second adhesive structure 6 is disposed between the second middle frame 22 and the second part 17, the first adhesive structure 3 is disposed between the first middle frame 21 and the first part 15, and the first adhesive structure 3 is not disposed between the third middle frame 23 and the third part 19; when the second part 17 and the third part 19 are switched from the unfolded state to the folded state, the shear deformation of the first adhesive structure 3 is less than or equal to the shear deformation of the second adhesive structure 6. When the display screen 1 is folded, the shear force can also be released.

[0160] In another embodiment, the first adhesive structure 3 is disposed between the third middle frame 23 and the third portion 19, and the first adhesive structure 3 is not disposed between the first middle frame 21 and the first portion 15; when the first portion 15 and the second portion 17 are switched from the unfolded state to the folded state, the shear deformation of the first adhesive structure 3 is less than or equal to the shear deformation of the second adhesive structure 6. When the display screen 1 is folded, the shear force can also be released.

[0161] Preferably, the orthographic projection of the second adhesive structure 6 on the second middle frame 22 includes a ring shape, which can ensure that when the display screen 1 is folded, the shear deformation of the second adhesive structure 6 is small enough, thereby ensuring that the difference between the shear deformation of the second adhesive structure 6 and the shear deformation of the first adhesive structure 3 is large enough, thereby improving the ability to release shear force and avoiding arching.

[0162] Please refer to Fig.25 As shown, in one embodiment, the display module 100 further includes a base 7, which is disposed between the first bonding structure 3 and the middle frame 2 and bonded to the first bonding structure 3, and the base 7 is configured to be able to move relative to the middle frame 2 along a first direction. When the display screen 1 is folded, the shear force generated when the film layer is displaced drives the base 7 to move relative to the middle frame 2 along the first direction, and the base 7 drives the display screen 1 to move while moving, thereby effectively releasing the shear force generated when the film layer of the display screen 1 is displaced, and avoiding reverse arching.

[0163] Preferably, the distance that the base 7 and the middle frame 2 can move relative to each other along the first direction is less than or equal to 50um, so as to ensure the strength and stability of the overall structure of the display module 100. Specifically, the distance that the base 7 and the middle frame 2 can move relative to each other along the first direction is 10um, 15um, 20um, 25um, 30um, 35um, 40um, 45um, 50um, etc., which is not specifically limited.

[0164] Please refer to Fig.26 and 27As shown, in one embodiment, the middle frame 2 is provided with a first movable groove 24, the base 7 is at least partially located in the first movable groove 24, and the base 7 can move along the first direction in the first movable groove 24. The first movable groove 24 limits the movement direction of the base 7, ensuring that the base 7 moves along the first direction.

[0165] Preferably, along the first direction, the size of the first movable groove 24 is larger than the size of the base 7, so as to form a movement space for the base 7. At the same time, the first movable groove 24 also limits the movement range of the base 7 in the first direction.

[0166] Preferably, the middle frame 2 is provided with a limiting portion 27, and the orthographic projection of the limiting portion 27 on the middle frame 2 is located within the orthographic projection of the first movable groove 24 on the middle frame 2, so as to limit the base 7 in the thickness direction, prevent the base 7 from moving along the thickness direction, and prevent the base 7 from leaving the first movable groove 24.

[0167] Please refer to Fig.28 As shown, in another embodiment, the middle frame 2 is provided with a movable portion 25, and the base 7 is provided with a second movable groove 71, the movable portion 25 is at least partially located in the second movable groove 71, and the movable portion 25 can move along the first direction in the second movable groove 71. The second movable groove 71 cooperates with the movable portion 25 to limit the movement direction of the base 7, ensuring that the base 7 moves along the first direction.

[0168] Please refer to Figure 11-13 As shown in Figures 24 and 24, another embodiment of the present application discloses a display module 100, which includes a display screen 1, a middle frame 2 and a first bonding structure 3. The display screen 1 has a display surface 12 and a back surface 13 opposite to each other. The display screen 1 includes a first part 15, a first bending portion 16, a second part 17, a second bending portion 18 and a third part 19 connected in sequence. The first part 15 and the second part 17 are folded or unfolded through the first bending portion 16, and the second part 17 and the third part 19 are folded or unfolded through the second bending portion 18; the middle frame 2 is arranged on the back surface 13 of the display screen 1; the first bonding structure 3 is bonded between the back surface 13 of the display screen 1 and the middle frame 2. Among them, when the first part 15 and the second part 17 are switched from the unfolded state to the folded state, the shear deformation amount of the first bonding structure 3 along the first direction is greater than or equal to the first threshold value. Optionally, the first bonding structure 3 includes a back glue, which can be acrylic glue or polyurethane glue.

[0169] The shear deformation of the first adhesive structure 3 along the first direction refers to the relative displacement d along the first direction between two surfaces of the adhesive portion 31 respectively connected to the display screen 1 and the middle frame 2, which can be obtained by direct measurement.

[0170] The first threshold value can be obtained by testing. Specifically, the shear deformation of the first bonding structure 3 along the first direction when the first part 15 and the second part 17 are in the folded state can be gradually reduced to detect whether the display screen 1 is arched, and finally a minimum shear deformation to avoid the display screen 1 from arching can be obtained, and the minimum shear deformation can be used as the first threshold value. Further, for the sake of safety, the first threshold value can also be slightly larger than the minimum shear deformation obtained by the test.

[0171] Preferably, the first threshold is greater than or equal to 20um, so as to ensure that the first adhesive structure 3 has sufficient deformability along the first direction when the first bending portion 16 is bent, and can effectively release the shear force generated when the film layer of the display screen 1 is displaced, thereby avoiding the occurrence of reverse arching of the second bending portion 18. Specifically, the first threshold is 20um, 22um, 25um, 28um, 30um, 35um, 40um, 45um, 50um, etc., and is not specifically limited.

[0172] In one embodiment, the display screen 1 is in the folded state, and the second portion 17 is located between the first portion 15 and the third portion 19. At this time, there are two folding methods. The first method is to refer to Fig.17 As shown, the first portion 15 can be folded inwardly relative to the second portion 17 via the first bending portion 16, and the third portion 19 can be folded outwardly relative to the second portion 17 via the second bending portion 18. Fig.18 As shown, the first portion 15 can be folded outward relative to the second portion 17 via the first bending portion 16 , and the third portion 19 can be folded inward relative to the second portion 17 via the second bending portion 18 .

[0173] In one embodiment, the display screen 1 is in the folded state, and the first portion 15 is located between the second portion 17 and the third portion 19. At this time, there are two folding methods. The first method is to refer to Fig.16 As shown, the first part 15 is folded inwards first, and the third part 19 is folded inwards later; in the second case, the first part 15 is folded outwards first, and the third part 19 is folded outwards later.

[0174] In one embodiment, the display screen 1 is in the folded state, and the third portion 19 is located between the first portion 15 and the second portion 17. At this time, there are two folding methods. The first method is to refer to Fig.18 As shown, the third part 19 is folded outwards first, and the first part 15 is folded outwards later; in the second case, the third part 19 is folded inwards first, and the first part 15 is folded inwards later.

[0175] In one embodiment, when the second portion 17 and the third portion 19 switch from the unfolded state to the folded state, the shear deformation of the first adhesive structure 3 along the first direction is greater than or equal to a second threshold value; wherein the second threshold value can also be obtained by the above test method.

[0176] Among them, since the bending radius of the first bending portion 16 and the second bending portion 18 may be different, the shear force generated by the displacement of the film layer of the display screen 1 when the second part 17 and the third part 19 switch from the unfolded state to the folded state and when the first part 15 and the second part 17 switch from the unfolded state to the folded state may be different. Therefore, the first threshold value and the second threshold value may be different.

[0177] Preferably, the second threshold is greater than or equal to 20um. This ensures that the first adhesive structure 3 has sufficient deformability along the first direction when the second bending portion 18 is bent, and can effectively release the shear force generated when the film layer of the display screen 1 is displaced, thereby avoiding the first bending portion 16 from arching. Specifically, the first threshold is 20um, 22um, 25um, 28um, 30um, 35um, 40um, 45um, 50um, etc., and is not specifically limited.

[0178] Please continue to refer to Fig.11 As shown, in one embodiment, the first bonding structure 3 includes a plurality of bonding portions 31 spaced apart along the first direction, and a size of the bonding portion 31 in the first direction is less than or equal to 10 mm.

[0179] Among them, a plurality of adhesive portions 31 are arranged at intervals along the length direction of the display screen 1 in the unfolded state, thereby improving the deformability of the first adhesive structure 3 along the length direction of the display screen 1 in the unfolded state. Among them, the smaller the size of the adhesive portion 31 in the first direction, the stronger the deformability of the first adhesive structure 3 in the first direction. Specifically, the size of the adhesive portion 31 in the first direction can be 10mm, 9mm, 8mm, 7mm, 6mm, 5mm, 4mm, 3mm, 2mm, etc., which is not specifically limited.

[0180] Preferably, the modulus of the bonding portion 31 is less than or equal to 500Kpa. The smaller the modulus of the bonding portion 31, the stronger the deformability of the first bonding structure 3 in the first direction. Specifically, the modulus of the bonding portion 31 can be 500Kpa, 450Kpa, 300Kpa, 250Kpa, 200Kpa, 150Kpa, 100Kpa, 50Kpa, etc., without specific limitation.

[0181] Preferably, the thickness of the adhesive portion 31 is greater than or equal to 0.15 mm, and the dimension of the adhesive portion 31 in the first direction is less than or equal to 10 mm. The greater the thickness of the adhesive portion 31, the greater the deformability of the first adhesive structure 3 in the first direction. Specifically, the thickness of the adhesive portion 31 can be 0.15 mm, 0.16 mm, 0.18 mm, 0.2 mm, 0.25 mm, 0.3 mm, 0.35 mm, 0.4 mm, 0.45 mm, 0.5 mm, etc., without specific limitation.

[0182] Another embodiment of the present application discloses a display device, which includes the display module 100 in the above embodiment. The display device can be on a smart device (such as a mobile phone, VR device, computer, television, car display, etc.).

[0183] The display device in this embodiment, wherein the display module 100, is formed by bonding the first bonding structure 3 between the back surface 13 of the display screen 1 and the middle frame 2, wherein the first bonding structure 3 includes a plurality of bonding portions 31, and the plurality of bonding portions 31 are arranged at intervals along the length direction of the display screen 1 in the unfolded state, thereby improving the deformability of the first bonding structure 3 along the length direction of the display screen 1 in the unfolded state, and effectively releasing the shear force generated when the film layer of the display screen 1 is displaced, thereby avoiding the occurrence of reverse arching in the bending area 11 of the display screen 1, thereby improving the display performance of the display module 100, and further improving the performance of the display device.

[0184] Although the present application has been described in conjunction with specific embodiments thereof, many alternatives, modifications and variations of these embodiments will be apparent to those skilled in the art in light of the foregoing description.

[0185] It should be noted that the above describes some embodiments of the present application. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recorded in the claims can be performed in an order different from that in the above embodiments and still achieve the desired results. In addition, the processes depicted in the accompanying drawings do not necessarily require the specific order or continuous order shown to achieve the desired results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0186] The embodiments of the present application are intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the embodiments of the present application should be included in the scope of protection of the present application.

Claims

1. A display module, characterized in that: include: A display screen having a display surface and a back surface facing each other, wherein the display screen includes at least one bending area; A middle frame, arranged on the back of the display screen; A first bonding structure, bonded between the back side of the display screen and the middle frame; Wherein, the first bonding structure includes a plurality of bonding portions, and the plurality of bonding portions are arranged at intervals along a first direction; wherein, the first direction is a length direction of the display screen in an unfolded state.

2. The display module according to claim 1, wherein: Along the first direction, the distance between two adjacent bonding portions is less than or equal to 20 mm; Preferably, along the first direction, the ratio of the distance between two adjacent bonding portions to the length of the display screen after unfolding is less than or equal to 1 / 8.

3. The display module according to claim 1, wherein: The dimension of the bonding portion in the second direction is greater than or equal to 50 mm, and the second direction is the width direction of the display screen in the unfolded state; And / or, the dimension of the bonding portion in the first direction is less than or equal to 10 mm; And / or, the modulus of the bonding portion is less than or equal to 500 KPa; And / or, the thickness of the bonding portion is greater than or equal to 0.15 mm.

4. The display module according to any one of claims 1 to 3, characterized in that: The display screen includes a screen body and a supporting structure, wherein the supporting structure is located on a side of the screen body close to the middle frame, the first bonding structure is arranged between the supporting structure and the middle frame, and the supporting structure includes a plurality of supporting parts arranged corresponding to the bonding parts, and the plurality of supporting parts are arranged at intervals along the first direction; A compressible space is formed between two adjacent support parts, and the support structure further comprises a compressible structure, and the compressible structure is located in the compressible space; along the first direction, two adjacent support parts are connected by the compressible structure; Preferably, along the first direction, the size of the compressible space is less than or equal to 0.8 mm; Preferably, along the first direction, a first deformation space is formed between two adjacent bonding portions, and the orthographic projection of the compressible structure on the screen body is located within the orthographic projection of the first deformation space on the screen body; Preferably, along the first direction, the size of the first deformation space is less than or equal to 20 mm; Preferably, the material of the support structure includes metal or carbon fiber.

5. The display module according to claim 4, characterized in that: The compressible structure comprises a deformation portion and a connection portion, wherein the deformation portion is connected to two adjacent support portions through the connection portion; Preferably, along the first direction, the size of the connecting portion is less than or equal to 0.2 mm, and the size of the deforming portion is within a range of 0.2-0.4 mm.

6. The display module according to claim 4, characterized in that: The display module further comprises a reinforcement structure, wherein the reinforcement structure is fitted with the compressible structure; Preferably, the reinforcement structure is located on a side of the compressible structure close to the middle frame; Preferably, the material of the reinforcement structure includes rubber.

7. The display module according to claim 1, wherein: The display screen includes a first portion, a first bending portion, a second portion, a second bending portion, and a third portion that are sequentially connected, and the middle frame includes a first middle frame corresponding to the first portion, a second middle frame corresponding to the second portion, and a third middle frame corresponding to the third portion; The first adhesive structure is at least arranged between the first middle frame and the first part; or, the first adhesive structure is at least arranged between the third middle frame and the third part; or, the first adhesive structure is arranged between the first middle frame and the first part, between the second middle frame and the second part, and between the third middle frame and the third part.

8. The display module according to claim 7, wherein: The display module further includes a first support plate, the first support plate is disposed corresponding to the first bending portion, and the first adhesive structure is further disposed between the first support plate and the first bending portion; and / or, The display module further includes a second supporting plate, the second supporting plate is arranged corresponding to the second bending portion, and the first bonding structure is further arranged between the second supporting plate and the second bending portion; Preferably, along the first direction, the size of the bonding portion provided between the first support plate and the first bending portion is 1-3 mm; Preferably, along the first direction, the size of the bonding portion provided between the second supporting plate and the second bending portion is 1-3 mm; Preferably, the first support plate comprises a first support portion and a second support portion spaced apart along the first direction, the first support portion is connected to the first middle frame, and the second support portion is connected to the second middle frame; Preferably, the second support plate includes a third support portion and a fourth support portion which are spaced apart along the first direction, the third support portion is connected to the second middle frame, and the fourth support portion is connected to the third middle frame.

9. The display module according to claim 7, wherein: The first part may be folded inwards or outwards relative to the second part via the first bending portion, and the third part may be folded inwards or outwards relative to the second part via the second bending portion; Preferably, the first bending portion is in one of a U-shape and a water drop shape after being bent, and the second bending portion is in the other of a U-shape and a water drop shape after being bent.

10. The display module according to claim 7, wherein: The display module further includes a second adhesive structure, and the second adhesive structure is arranged between the second middle frame and the second part; The first bonding structure is disposed between the first middle frame and the first portion; When the second part and the third part are switched from the unfolded state to the folded state, the shear deformation of the first bonding structure is greater than the shear deformation of the second bonding structure; and / or, The first adhesive structure is disposed between the third middle frame and the third part; when the first part and the second part are switched from an unfolded state to a folded state, the shear deformation amount of the first adhesive structure is greater than the shear deformation amount of the second adhesive structure; Preferably, the orthographic projection of the second bonding structure on the second middle frame includes a ring shape.

11. The display module according to claim 1 or 9, characterized in that: The display module also includes: a base, disposed between the first bonding structure and the middle frame and bonded to the first bonding structure, the base being configured to be movable relative to the middle frame along a first direction; Preferably, a distance within which the base and the middle frame can move relative to each other along the first direction is less than or equal to 50 um.

12. The display module according to claim 11, wherein: The middle frame is provided with a first movable groove, the base is at least partially located in the first movable groove, and the base can move along the first direction in the first movable groove; Preferably, along the first direction, the size of the first movable groove is larger than the size of the base, so as to form a movement space for the base to move; Preferably, the middle frame is provided with a limiting portion, and the orthographic projection of the limiting portion on the middle frame is located within the orthographic projection of the first movable groove on the middle frame.

13. The display module according to claim 11, wherein: The middle frame is provided with a movable part, the base is provided with a second movable groove, the movable part is at least partially located in the second movable groove, and the movable part can move along the first direction in the second movable groove.

14. The display module according to claim 1, wherein: The middle frame is provided with a receiving groove, and the bonding portion is at least partially located in the receiving groove; Along the first direction, the size of the accommodating groove is larger than the size of the corresponding bonding portion, so as to form a second deformation space for the bonding portion to deform; Preferably, the depth of the receiving groove is 150um-250um.

15. A display module, characterized in that: include: A display screen having a display surface and a back surface facing each other, the display screen comprising a first portion, a first bending portion, a second portion, a second bending portion and a third portion connected in sequence, the first portion and the second portion being folded or unfolded through the first bending portion, and the second portion and the third portion being folded or unfolded through the second bending portion; A middle frame, arranged on the back of the display screen; A first bonding structure, bonded between the back side of the display screen and the middle frame; When the first part and the second part switch from an unfolded state to a folded state, a shear deformation of the first bonding structure along a first direction is greater than or equal to a first threshold; wherein the first direction is a length direction of the display screen in the unfolded state.

16. The display module according to claim 15, wherein: The first threshold is greater than or equal to 20 um.

17. The display module according to claim 15, wherein: When the second part and the third part are switched from the unfolded state to the folded state, the shear deformation amount of the first bonding structure along the first direction is greater than or equal to a second threshold value; Preferably, the second threshold is greater than or equal to 20 um.

18. The display module according to any one of claims 15 to 17, characterized in that: The first bonding structure comprises a plurality of bonding portions spaced apart along the first direction, and a size of the bonding portion in the first direction is less than or equal to 10 mm; Preferably, the modulus of the bonding portion is less than or equal to 500 KPa; Preferably, the thickness of the adhesive portion is greater than or equal to 0.15 mm, and the dimension of the adhesive portion in the first direction is less than or equal to 10 mm.

19. The display module according to claim 15, wherein: When the display screen is in a folded state, the second part is located between the first part and the third part; or, the first part is located between the second part and the third part; or, the third part is located between the first part and the second part.

20. A display device, characterized in that: Comprising a display module as described in any one of claims 1-19.

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