Display module and display device

Abstract

The application provides a display module and a display device. The display module comprises a display screen having a display surface and a back surface opposite to each other, and the display screen comprises at least one bending area; a middle frame arranged on the back surface of the display screen; and a first adhesive structure arranged between the back surface of the display screen and the middle frame. The first adhesive structure comprises a plurality of adhesive parts arranged at intervals along a first direction. The first direction is the length direction of the display screen in an unfolded state. The display module provided by the application has the first adhesive structure arranged between the back surface of the display screen and the middle frame, the first adhesive structure comprises a plurality of adhesive parts arranged at intervals along the length direction of the display screen in the unfolded state, the deformability of the first adhesive structure is improved, the shear force generated when the display screen film layer is dislocated can be effectively released, the reverse arch 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 technical field of display, in particular to a display module and a display device. BACKGROUND

[0002] With the development of display technology, foldable display devices have appeared in the market. Such display devices with folding function can switch screen size by folding, for example, in use, the folding screen is unfolded to obtain a larger display size to improve the experience, and in non-use, the folding screen is folded to reduce the screen size for easy carrying.

[0003] However, the current folding screen is prone to reverse arching, increasing the risk of screen failure. SUMMARY

[0004] Therefore, the purpose of the present application is to provide a display module that can avoid reverse arching and improve bending performance and display performance.

[0005] To achieve the above purpose, the present application provides a display module, which comprises:

[0006] a display screen having a display surface and a back surface opposite to each other, the display screen comprising at least one bending area;

[0007] a middle frame arranged on the back surface of the display screen;

[0008] a first adhesive structure arranged between the back surface of the display screen and the middle frame;

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

[0010] In one embodiment, the distance between two adjacent adhesive parts along the first direction is less than or equal to 20mm.

[0011] Preferably, the ratio of the distance between two adjacent adhesive parts along the first direction to the length of the display screen in the unfolded state is less than or equal to 1 / 8.

[0012] In one embodiment, the size of the adhesive part in a second direction is greater than or equal to 50mm, and the second direction is the width direction of the display screen in the unfolded state.

[0013] And / or, the size of the adhesive part in the first direction is less than or equal to 10mm.

[0014] And / or, the modulus of the adhesive part is less than or equal to 500Kpa.

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

[0016] In one embodiment, the display screen comprises a screen body and a support structure, the support structure is located on the side of the screen body close to the middle frame, the first bonding structure is arranged between the support structure and the middle frame, the support structure comprises a plurality of support parts corresponding to the bonding parts, and the plurality of support parts are arranged in the first direction.

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

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

[0019] Preferably, in the first direction, a first deformation space is formed between the adjacent two bonding parts, and the orthographic projection of the compressible structure on the screen body is located in the orthographic projection of the first deformation space on the screen body.

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

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

[0022] In one embodiment, the compressible structure comprises a deformation part and a connecting part, and the deformation part is connected with the adjacent two support parts through the connecting part.

[0023] Preferably, in the first direction, the size of the connecting part is less than or equal to 0.2mm, and the size of the deformation part comprises 0.2-0.4mm.

[0024] In one embodiment, the display module further comprises a reinforcing structure, and the reinforcing structure is attached to the compressible structure.

[0025] Preferably, the reinforcing structure is located on the side of the compressible structure close to the middle frame.

[0026] Preferably, the material of the reinforcing structure comprises rubber.

[0027] In one embodiment, the display screen comprises a first part, a first bending part, a second part, a second bending part and a third part connected in sequence, the middle frame comprises a first middle frame corresponding to the first part, a second middle frame corresponding to the second part, and a third middle frame corresponding to the third part.

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

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

[0030] The display module further comprises a second support plate arranged corresponding to the second bending part, and the first adhesive structure is further arranged between the second support plate and the second bending part.

[0031] Preferably, the size of the adhesive part arranged between the first support plate and the first bending part along the first direction is 1-3 mm.

[0032] Preferably, the size of the adhesive part arranged between the second support plate and the second bending part along the first direction is 1-3 mm.

[0033] Preferably, the first support plate comprises a first support part and a second support part arranged at intervals along the first direction, the first support part is connected with the first middle frame, and the second support part is connected with the second middle frame.

[0034] Preferably, the second support plate comprises a third support part and a fourth support part arranged at intervals along the first direction, the third support part is connected with the second middle frame, and the fourth support part is connected with the third middle frame.

[0035] In one embodiment, the first part can be inwardly or outwardly folded relative to the second part through the first bending part, and the third part can be inwardly or outwardly folded relative to the second part through the second bending part.

[0036] In one embodiment, the first bending part is in one of U shape and drop shape after being bent, and the second bending part is in the other one of U shape and drop shape after being bent.

[0037] In one embodiment, the display module further comprises a second adhesive structure arranged between the second middle frame and the second part.

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

[0039] The first bonding structure is arranged 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, a shear deformation amount of the first bonding structure is greater than a shear deformation amount of the second bonding structure.

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

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

[0042] A base is arranged between the first bonding structure and the middle frame and bonded with the first bonding structure, and the base is configured to be movable relative to the middle frame along a first direction;

[0043] Preferably, a relative movement distance of the base and the middle frame 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 slot, and the base is at least partially located in the first movable slot, and the base is movable in the first movable slot along the first direction.

[0045] Preferably, along the first direction, a size of the first movable slot is greater than a size of the base to form a movement space for the base to move.

[0046] Preferably, the middle frame is provided with a limiting part, and a normal projection of the limiting part on the middle frame is located in a normal projection of the first movable slot on the middle frame.

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

[0048] In one embodiment, the middle frame is provided with a receiving slot, and the bonding part is at least partially located in the receiving slot.

[0049] Along the first direction, a size of the receiving slot is greater than a size of the corresponding bonding part to form a second deformation space for the bonding part to deform.

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

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

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

[0053] a middle frame arranged on the back surface of the display screen;

[0054] a first adhesive structure arranged between the back surface of the display screen and the middle frame;

[0055] 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 along a first direction is greater than or equal to a first threshold value, wherein the first direction is the length direction of the display screen in the unfolded state.

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

[0057] When the second part and the third part are switched from an unfolded state to a folded state, the shear deformation amount of the first adhesive structure along the first direction is greater than or equal to a second threshold value.

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

[0059] In one embodiment, the first adhesive structure comprises a plurality of adhesive parts arranged at intervals along the first direction, and the size of the adhesive part in the first direction is less than or equal to 10 mm.

[0060] Preferably, the modulus of the adhesive part is less than or equal to 500 Kpa.

[0061] Preferably, the thickness of the adhesive part is greater than or equal to 0.15 mm, and the size of the adhesive part in the first direction is less than or equal to 10 mm.

[0062] In one embodiment, in the 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 application also discloses a display device comprising the display module.

[0064] Compared with the prior art, the display module provided by the application has the first bonding structure bonded between the back of the display screen and the middle frame, wherein the first bonding structure comprises a plurality of bonding parts, the plurality of bonding parts are arranged at intervals along the length direction of the display screen in the unfolded state, the deformability of the first bonding structure is improved, the shear force generated when the display screen film layer is dislocated can be effectively released, the reverse arch in the bending area of the display screen is avoided, and the display performance of the display module is improved. BRIEF DESCRIPTION OF DRAWINGS

[0065] In order to more clearly illustrate the technical solutions in the application or the related art, the drawings needed to be used in the embodiments or the related art description will be briefly introduced. Obviously, the drawings in the following description are only embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor.

[0066] Figure 1 It is a schematic diagram of a related display module appearing reverse arch;

[0067] Figure 2 It is a structure schematic diagram of the display module unfolded in an embodiment of the application Figure 1 ;

[0068] Figure 3 It is a structure schematic diagram of the display module unfolded in an embodiment of the application Figure 2 ;

[0069] Figure 4 It is a structure schematic diagram of the display module folded in an embodiment of the application;

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

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

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

[0073] Figure 8 It is a schematic diagram of the support structure of the display module in another embodiment of the application;

[0074] Figure 9 It is a schematic diagram of the support structure of the display module in another embodiment of the application;

[0075] Figure 10 It is a partial structure schematic diagram of the display module in another embodiment of the application;

[0076] Figure 11 Structure diagram of the display module unfolded in another embodiment of the present application;

[0077] Figure 12 Structure diagram of the display module unfolded in another embodiment of the present application;

[0078] Figure 13 Structure diagram of the display module folded in another embodiment of the present application;

[0079] Figure 14 Structure diagram of the display module unfolded in another embodiment of the present application;

[0080] Figure 15 Structure diagram of the display module unfolded in another embodiment of the present application;

[0081] Figure 16 Structure diagram of the display module unfolded in another embodiment of the present application;

[0082] Figure 17 Structure diagram of the display module folded in another embodiment of the present application;

[0083] Figure 18 Structure diagram of the display module folded in another embodiment of the present application;

[0084] Figure 19 Structure diagram of the display module folded in another embodiment of the present application;

[0085] Figure 20 Structure diagram of the display module folded in another embodiment of the present application;

[0086] Figure 21 Structure diagram of the display module unfolded in another embodiment of the present application Figure 1 ;

[0087] Figure 22 Structure diagram of the display module unfolded in another embodiment of the present application Figure 2 ;

[0088] Figure 23 Structure diagram of the display module folded in another embodiment of the present application;

[0089] Figure 24 Structure diagram of the adhesive part in the display module in another embodiment of the present application;

[0090] Figure 25 Structure diagram of the display module in another embodiment of the present application;

[0091] Figure 26 Structure diagram of the display module in another embodiment of the present application;

[0092] Figure 27 Fig. 2 is a schematic view of a partial structure of a display module according to another embodiment of the present application.

[0093] Figure 28 Fig. 2 is a schematic view of a partial structure of a display module according to another embodiment of the present application.

[0094] Legend:

[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 part; 17, second part; 18, second bending part; 19, third part;

[0097] 2, middle frame; 21, first middle frame; 22, second middle frame; 23, third middle frame; 24, first movable slot; 25, movable part; 26, accommodating slot; 261, second deformation space; 27, limiting part;

[0098] 3, first adhesive structure; 31, adhesive part; 311, first deformation space;

[0099] 4, support structure; 41, support part; 411, compressible space; 42, compressible structure; 43, deformation part; 44, connecting part; 45, reinforcing structure;

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

[0101] 6, second adhesive structure;

[0102] 7, base; 71, second movable slot. DETAILED DESCRIPTION

[0103] In order to make the purpose, technical scheme and advantages of the present application clearer, the present application is further described in detail below with reference to the embodiments and the accompanying drawings.

[0104] It should be noted that the technical terms or scientific terms used in the embodiments of the present application should be understood as the general meaning understood by those skilled in the art to which the embodiments of the present application belong, unless otherwise defined. The terms "first", "second", and similar terms used in the embodiments of the present application do not represent any order, quantity or importance, but are only used to distinguish different components. The terms "include" or "contain" and similar terms mean that the elements or objects before the terms cover the elements or objects listed after the terms and their equivalents, and do not exclude other elements or objects. The terms "connect" or "connected" and similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. The terms "upper", "lower", "left", "right" and the like are only used to represent relative positional relationships, and when the absolute positions of the described objects change, the relative positional relationships may also change accordingly.

[0105] With the development of display technology, foldable display screens have become a development trend of future mobile electronic products. The display module using the foldable display screen can be unfolded or folded as needed, enhancing the user experience. The foldable display screen can provide more display area in the unfolded state, improving the display effect. When the foldable display screen is in the folded state, it is convenient for users to carry, and at the same time, it can provide a smaller display area.

[0106] Referring to Figure 1 As shown in FIG. 1, the display screen 1 is formed by stacking a plurality of film layers, and in the bending process, the bending radii of different film layers are different, causing the film layers to move out of position, thereby generating a shear force, causing the bending area 11 to appear an inverted arch.

[0107] Based on this, the present application provides a display module solution, which is described in detail in the following embodiments.

[0108] Referring to Figures 2-4 As shown in FIG. 1, the display screen 1 is formed by stacking a plurality of film layers, and in the bending process, the bending radii of different film layers are different, causing the film layers to move out of position, thereby generating a shear force, causing the bending area 11 to appear an inverted arch.

[0109] The display screen 1 has a display surface 12 and a back surface 13 opposite to each other, the display screen 1 includes at least one bending area 11, the middle frame 2 is arranged on the back surface 13 of the display screen 1, and the first adhesive structure 3 is adhered 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 (such as the 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 adhesive structure 3 connects the back of the display screen 1 to the middle frame 2. The middle frame 2 protects the display screen 1. When the display module 100 is subjected to external forces such as collisions or drops, the middle frame 2 can absorb some of the impact force, reducing damage to components such as the display screen 1. Optionally, the adhesive part 31 includes an adhesive backing, which can be acrylic adhesive or polyurethane adhesive, etc.

[0112] The display module 100 provided in this application attaches a first adhesive structure 3 between the back surface 13 and the middle frame 2 of the display screen 1. The first adhesive structure 3 includes a plurality of adhesive portions 31, which are spaced apart along the length direction of the display screen 1 in the unfolded state. This improves the deformability of the first adhesive structure 3 along the length direction of the display screen 1 in the unfolded state, effectively releases the shear force generated when the film layer of the display screen 1 shifts, avoids the bending area 11 of the display screen 1 from arching, and improves the display performance of the display module 100.

[0113] Specifically, this application provides adhesive portions 31 spaced apart along a first direction, so that when the display screen 1 is folded, reference is made to... Figure 4 As shown, the film layer in the display screen 1 shifts along the first direction, and the adhesive part 31 deforms along the first direction under the influence of the display screen 1, thereby effectively releasing the shear force generated when the film layer of the display screen 1 shifts, preventing the bending area 11 of the display screen 1 from arching, and improving the display performance of the display module 100.

[0114] In one embodiment, along the first direction, the distance between two adjacent adhesive portions 31 is less than or equal to 20 mm, which helps to ensure the flatness of the display surface 12 of the display screen 1. (Refer to...) Figure 3 Along the first direction, the distance between two adjacent adhesive portions 31 is M. Specifically, along the first direction, the distance between two adjacent adhesive portions 31 can be 1mm, 2mm, 3mm, 5mm, 8mm, 10mm, 15mm, 20mm, etc., and there is no specific limitation.

[0115] Preferably, along the first direction, the ratio of the distance between two adjacent adhesive portions 31 to the unfolded length of the display screen 1 is less than or equal to 1 / 8, which helps to ensure the flatness of the display surface 12 of the display screen 1. Specifically, along the first direction, the ratio of the distance between two adjacent adhesive portions 31 to the unfolded length of the display screen 1 can be 1 / 20, 1 / 15, 1 / 10, 1 / 8, etc., and there is no specific limitation.

[0116] Please continue to refer to Figure 3As shown, in one embodiment, the size of the bonding portion 31 in the second direction (e.g., 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. In this case, the size of the bonding portion 31 in the second direction being greater than or equal to 50 mm is conducive to reducing the deformability of the bonding portion 31 in the second direction, avoiding 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] Further, in order to improve the deformability of the first bonding structure 3 in the first direction, the bonding portion 31 needs to meet at least one of the following three conditions:

[0118] Condition one: the size of the bonding portion 31 in the first direction is less than or equal to 10 mm; refer to Figure 3 , the size of the bonding portion 31 in the first direction is N. In this case, 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 two: the modulus of the bonding portion 31 is less than or equal to 500 Kpa; in this case, 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 500 Kpa, 450 Kpa, 300 Kpa, 250 Kpa, 200 Kpa, 150 Kpa, 100 Kpa, 50 Kpa, etc., and is not specifically limited.

[0120] Condition three: the thickness (e.g., the Z direction in the figure) of the bonding portion 31 is greater than or equal to 0.15 mm; in this case, the greater the thickness of the bonding portion 31, the stronger 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., and is not specifically limited.

[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; in the first direction, the size of the receiving groove 26 is greater than the size of the corresponding bonding portion 31, so as to form a second deformation space 261 for the deformation of the bonding portion 31. In this case, the middle frame 2 being provided with the receiving groove 26 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 accommodating groove 26 is 150-250 urn, so as to avoid affecting the structural strength of the middle frame 2 due to too large depth. Specifically, the depth of the accommodating groove 26 can be 150 urn, 180 urn, 200 urn, 220 urn, 250 urn, etc., and is not specifically limited.

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

[0124] The compressible space 411 is formed between the adjacent two support portions 41, and the support structure 4 further includes a compressible structure 42, which is located in the compressible space 411; along the first direction, the adjacent two support portions 41 are connected through 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 display screen 1 film layer is dislocated, increasing the shear force release path, further 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.

[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 beneficial to ensure 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., and is not specifically limited.

[0127] Please continue to refer to Figure 6 In one embodiment, as shown in the figure, along the first direction, the first deformation space 311 is formed between the adjacent two adhesive portions 31, and the orthogonal projection of the compressible structure 42 on the screen body 14 is located within the orthogonal projection of the first deformation space 311 on the screen body 14. Specifically, please refer to Figure 7 When the display screen 1 is folded, the compressible structure 42 is compressed along the first direction, and the compressible space 411 is also 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 display screen 1 film layer is dislocated, and avoiding the occurrence of reverse arch in the bending area 11 of the display screen 1.

[0128] Preferably, the size S of the first deformation space 311 is less than or equal to 20 mm in the first direction, which is conducive to ensuring the flatness of the display surface 12 of the display screen 1. Specifically, 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. in the first direction, and the specific value is not limited.

[0129] Preferably, the material of the support structure 4 includes metal or carbon fiber, etc. to ensure sufficient strength, realize stable support of 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 In one embodiment, the compressible structure 42 includes a deformation part 43 and a connecting part 44, and the deformation part 43 is connected with the adjacent two support parts 41 through the connecting part 44. Among them, Figure 7 is the state when the compressible structure 42 is not compressed, Figure 8 is the state when the compressible structure 42 is compressed, and when the display screen 1 is folded, the extrusion force on the support structure 4 is transmitted to the deformation part 43 through the connecting part 44, causing the deformation part 43 to be compressed and deformed, and when the display screen 1 is unfolded, the deformation part 43 returns to the uncompressed state.

[0131] Preferably, the size of the connecting part 44 is less than or equal to 0.2 mm in the first direction, and the size of the deformation part 43 includes 0.2-0.4 mm, which is conducive to ensuring the flatness of the display surface 12 of the display screen 1. Specifically, the size of the connecting part 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. in the first direction, and the size of the deformation part 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. The specific value is not limited.

[0132] Please refer to Figure 10 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. Among them, the reinforcing structure 45 is used to strengthen the strength of the compressible structure 42, so as to avoid the compressible structure 42 being damaged in the repeated compression and unfolding process.

[0133] Preferably, the reinforcing structure 45 is located on the side of the compressible structure 42 close to the middle frame 2. Among them, the side of the compressible structure 42 close to the middle frame 2 has the first deformation space 311, so that the reinforcing structure 45 is arranged on the side of the compressible structure 42 close to the middle frame 2, which can avoid the reinforcing structure 45 affecting the flatness of the display surface 12 of the display screen 1.

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

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

[0136] The first bonding structure 3 is arranged between the first middle frame 21 and the first portion 15, between the second middle frame 22 and the second portion 17, and between the third middle frame 23 and the third portion 19. When one of the first bending portion 16 and the second bending portion 18 is folded, the first bonding structure 3 corresponding to different portions is deformed in the first direction, thereby effectively releasing the shear force generated when the film layer of the display screen 1 is dislocated from two opposite directions.

[0137] In another embodiment, the first bonding structure 3 is arranged between the first middle frame 21 and the first portion 15, and no first bonding structure 3 is arranged between the second middle frame 22 and the second portion 17 and between the third middle frame 23 and the third portion 19. When one of the first bending portion 16 and the second bending portion 18 is folded, the bonding portion 31 is deformed in the first direction. At this time, the first portion 15 and the first middle frame 21 are slightly dislocated in the first direction, thereby effectively releasing the shear force generated when the film layer of the display screen 1 is dislocated, and avoiding the other of the first bending portion 16 and the second bending portion 18 from appearing reverse arching.

[0138] In another embodiment, the first bonding structure 3 is arranged between the third middle frame 23 and the third portion 19, and no first bonding structure 3 is arranged between the first middle frame 21 and the first portion 15 and between the second middle frame 22 and the second portion 17. When one of the first bending portion 16 and the second bending portion 18 is folded, the bonding portion 31 is deformed in the first direction. At this time, the third portion 19 and the third middle frame 23 are slightly dislocated in the first direction, thereby effectively releasing the shear force generated when the film layer of the display screen 1 is dislocated, and avoiding the other of the first bending portion 16 and the second bending portion 18 from appearing reverse arching.

[0139] In another embodiment, the first bonding structure 3 is arranged between the first middle frame 21 and the first portion 15 and between the second middle frame 22 and the second portion 17, and no first bonding structure 3 is arranged 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 Figure 13 As shown, when the first bending portion 16 is folded, the first adhesive structures 3 corresponding to the first portion 15, the second portion 17, and the third portion 19 all deform along the first direction. At this time, the first portion 15 is misaligned with the first middle frame 21, releasing some of the shear force generated when the film layer is misaligned. At the same time, the second portion 17 and the third portion 19 are misaligned with the second middle frame 22 and the third middle frame 23, releasing some of the shear force generated when the film layer is misaligned. This is equivalent to releasing shear force simultaneously from both ends of the display screen 1 along the first direction.

[0142] Please refer to Figures 14-16 As shown, in one embodiment, the display module 100 further includes a first support plate 51, which is correspondingly disposed with respect to the first bent portion 16. A first adhesive structure 3 is also disposed between the first support plate 51 and the first bent portion 16. The first support plate 51 serves to support the first bent portion 16, while the placement of the first adhesive structure 3 between the first support plate 51 and the first bent portion 16 helps to increase the flatness of the first bent portion 16, preventing the first bent portion 16 from being too large in the first direction from affecting its flatness.

[0143] Preferably, the first support plate 51 has a first support portion 511 and a second support portion 512 spaced apart along a 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 spaced-apart arrangement of the first support portion 511 and the second support portion 512 facilitates 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, which is correspondingly disposed with respect to the second bent portion 18. A first adhesive structure 3 is also disposed between the second support plate 52 and the second bent portion 18. The second support plate 52 serves to support the second bent portion 18, while the placement of the first adhesive structure 3 between the second support plate 52 and the second bent portion 18 helps to increase the flatness of the second bent portion 18, preventing the second bent portion 18 from being too large in the first direction and affecting its flatness.

[0145] Preferably, the second support plate 52 is provided with a third support portion 521 and a fourth support portion 522 spaced apart along the first direction, the third support portion 521 is connected with the second middle frame 22, and the fourth support portion 522 is connected with the third middle frame 23. The third support portion 521 and the fourth support portion 522 are spaced apart to facilitate the second bending portion 18 to bend. 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 comprises the first support plate 51 and the second support plate 52 at the same time, the first adhesive structure 3 is arranged between the first support plate 51 and the first bending portion 16, and the first adhesive structure 3 is arranged between the second support plate 52 and the second bending portion 18, which is conducive to ensuring the flatness of the entire display screen 1.

[0147] Preferably, along the first direction, the size of the adhesive portion 31 arranged 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. Since the first bending portion 16 needs to be bent, the size of the corresponding adhesive portion 31 should not be too large. Specifically, the size of the adhesive 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., and the specific value is not limited.

[0148] Preferably, along the first direction, the size of the adhesive portion 31 arranged 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. Since the second bending portion 18 needs to be bent, the size of the corresponding adhesive portion 31 should not be too large. Specifically, the size of the adhesive 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., and the specific value is not limited.

[0149] Please refer to Figure 17 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, 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, 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 the shape of a water drop after being bent, and the second bending portion 18 is in the shape of a U after being bent.

[0150] Please refer to Figure 18As shown in the drawings, in one embodiment, the first portion 15 can be folded inwardly relative to the second portion 17 through the first bending portion 16, and the third portion 19 can be folded outwardly relative to the second portion 17 through the second bending portion 18. At this time, the folding sequence of the first portion 15 and the third portion 19 can not be distinguished, 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 water drop shape after being bent, and the second bending portion 18 is in a U shape after being bent.

[0151] Please refer to Figure 19 As shown in the drawings, in one embodiment, the first portion 15 can be folded outwardly relative to the second portion 17 through the first bending portion 16, and the third portion 19 can be folded inwardly relative to the second portion 17 through the second bending portion 18. At this time, the folding sequence of the first portion 15 and the third portion 19 can not be distinguished, 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 U shape after being bent, and the second bending portion 18 is in a water drop shape after being bent.

[0152] Please refer to Figure 20 As shown in the drawings, in one embodiment, the first portion 15 can be folded outwardly relative to the second portion 17 through the first bending portion 16, and the third portion 19 can be folded outwardly relative to the second portion 17 through the second bending portion 18. At this time, the third portion 19 is folded outwardly first, and the first portion 15 is folded outwardly 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 outwardly first, and the third portion 19 is folded outwardly 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 in a U shape after being bent, and the second bending portion 18 is in a U shape after being bent.

[0153] It should be noted that, taking the second portion 17 as a reference, folding inwardly means folding toward the display surface of the second portion 17, and folding outwardly means folding toward the back surface of the second portion 17.

[0154] Please refer to Figures 21-23 As shown in the drawings, in one embodiment, the display module 100 further comprises a second adhesive structure 6, which is arranged between the second middle frame 22 and the second portion 17, and the first adhesive structure 3 is arranged between the first middle frame 21 and the first portion 15; when the second portion 17 and the third portion 19 are switched from the unfolded state to the folded state, the shear deformation amount of the first adhesive structure 3 is greater than that of the second adhesive structure 6; at the same time, the first adhesive structure 3 is arranged between the third middle frame 23 and the third portion 19; when the first portion 15 and the second portion 17 are switched from the unfolded state to the folded state, the shear deformation amount of the first adhesive structure 3 is greater than that of the second adhesive structure 6. Optionally, the second adhesive structure 6 comprises a back adhesive, which can be, for example, an acrylic adhesive or a polyurethane adhesive.

[0155] Please refer to Figure 24 The shear deformation of the first adhesive structure 3 refers to the relative displacement d between the two surfaces of the adhesive part 31 connected with the display screen 1 and the middle frame 2, which can be directly measured. In the unfolded state of the display screen 1, the relative displacement d between the two surfaces of the adhesive part 31 connected with 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 of the second adhesive structure 6 connected with the display screen 1 and the middle frame 2, and in the unfolded state of the display screen 1, 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 that of the second adhesive structure 6.

[0156] In the unfolded state, the shear deformation of the first adhesive structure 3 is greater than that of the second adhesive structure 6, and the shear force generated when the film layer of the display screen 1 is dislocated can be effectively released away from the first bending part 16 by the first adhesive structure 3 arranged 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 switch from the unfolded state to the folded state, the shear deformation of the first adhesive structure 3 is greater than that of the second adhesive structure 6, and the shear force generated when the film layer of the display screen 1 is dislocated can be effectively released in the direction away from the second bending part 18 by the first adhesive structure 3 arranged between the third middle frame 23 and the third part 19.

[0157] In another embodiment, the second adhesive structure 6 is arranged between the second middle frame 22 and the second part 17, the first adhesive structure 3 is arranged between the first middle frame 21 and the first part 15, and no first adhesive structure 3 is arranged between the third middle frame 23 and the third part 19; when the second part 17 and the third part 19 switch from the unfolded state to the folded state, the shear deformation of the first adhesive structure 3 is greater than that 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 dislocated away from the first bending part 16.

[0158] In another embodiment, the first adhesive structure 3 is arranged between the third middle frame 23 and the third part 19, and no first adhesive structure 3 is arranged between the first middle frame 21 and the first part 15; when the first part 15 and the second part 17 switch from the unfolded state to the folded state, the shear deformation of the first adhesive structure 3 is greater than that 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 dislocated in the direction away from the second bending part 18.

[0159] In another embodiment, the second bonding structure 6 is arranged between the second middle frame 22 and the second part 17, the first bonding structure 3 is arranged between the first middle frame 21 and the first part 15, and no first bonding structure 3 is arranged 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 amount of the first bonding structure 3 is less than or equal to the shear deformation amount of the second bonding structure 6. When the display screen 1 is folded, the effect of releasing the shear force can also be achieved.

[0160] In another embodiment, the first bonding structure 3 is arranged between the third middle frame 23 and the third part 19, and no first bonding structure 3 is arranged between the first middle frame 21 and the first part 15; 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 is less than or equal to the shear deformation amount of the second bonding structure 6. When the display screen 1 is folded, the effect of releasing the shear force can also be achieved.

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

[0162] Please refer to Figure 25 In one embodiment, the display module 100 further includes a base 7 arranged between the first bonding structure 3 and the middle frame 2 and bonded with the first bonding structure 3, and the base 7 is configured to be movable relative to the middle frame 2 along the first direction. When the display screen 1 is folded, the shear force generated when the film layer is dislocated 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 at the same time, thereby effectively releasing the shear force generated when the film layer of the display screen 1 is dislocated and avoiding the reverse arch.

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

[0164] Please refer to Figure 26 and 27As shown in the drawings, in one embodiment, the middle frame 2 is provided with a first movable slot 24, and the base 7 is at least partially located in the first movable slot 24, and the base 7 can move in the first movable slot 24 in a first direction. In this embodiment, the first movable slot 24 limits the movement direction of the base 7, and ensures that the base 7 moves in the first direction.

[0165] Preferably, in the first direction, the size of the first movable slot 24 is greater than the size of the base 7, so as to form a movement space for the base 7 to move. At the same time, the first movable slot 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 part 27, and the orthogonal projection of the limiting part 27 on the middle frame 2 is located in the orthogonal projection of the first movable slot 24 on the middle frame 2, so as to limit the base 7 in the thickness direction, avoid the base 7 moving in the thickness direction, and avoid the base 7 from leaving the first movable slot 24.

[0167] Please refer to Figure 28 As shown in the drawings, in another embodiment, the middle frame 2 is provided with a movable part 25, and the base 7 is provided with a second movable slot 71, and the movable part 25 is at least partially located in the second movable slot 71, and the movable part 25 can move in the second movable slot 71 in a first direction. In this embodiment, the second movable slot 71 and the movable part 25 cooperate to limit the movement direction of the base 7, and ensure that the base 7 moves in the first direction.

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

[0169] In this embodiment, the shear deformation amount of the first adhesive structure 3 in the first direction refers to the relative displacement amount d between two surfaces of the adhesive part 31 connected with the display screen 1 and the middle frame 2 in the first direction, which can be directly measured.

[0170] The first threshold value can be obtained by testing. Specifically, the display screen 1 can be tested by gradually reducing the shear deformation of the first bonding structure 3 along the first direction in the folded state, and finally a minimum shear deformation that avoids the reverse arch of the display screen 1 is obtained, which can be taken as the first threshold value. Further, the first threshold value can also be slightly larger than the minimum shear deformation obtained by testing.

[0171] Preferably, the first threshold value is greater than or equal to 20 um, which ensures that the first bonding 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, avoiding the reverse arch of the second bending portion 18. Specifically, the first threshold value is 20 um, 22 um, 25 um, 28 um, 30 um, 35 um, 40 um, 45 um, 50 um, etc., which is not limited in particular.

[0172] In one embodiment, the display screen 1 is in a folded state, and the second portion 17 is located between the first portion 15 and the third portion 19. At this time, there can be two folding methods. The first refers to FIG. 2A, in which the first portion 15 is inwardly folded relative to the second portion 17 through the first bending portion 16, and the third portion 19 is outwardly folded relative to the second portion 17 through the second bending portion 18. The second refers to FIG. 2B, in which the first portion 15 is outwardly folded relative to the second portion 17 through the first bending portion 16, and the third portion 19 is inwardly folded relative to the second portion 17 through the second bending portion 18. Figure 17 Figure 18

[0173] In one embodiment, the display screen 1 is in a folded state, and the first portion 15 is located between the second portion 17 and the third portion 19. At this time, there can be two folding methods. The first refers to FIG. 3A, in which the first portion 15 is inwardly folded first, and the third portion 19 is inwardly folded later. The second refers to FIG. 3B, in which the first portion 15 is outwardly folded first, and the third portion 19 is outwardly folded later. Figure 16

[0174] In one embodiment, the display screen 1 is in a folded state, and the third portion 19 is located between the first portion 15 and the second portion 17. At this time, there can be two folding methods. The first refers to FIG. 4A, in which the third portion 19 is outwardly folded first, and the first portion 15 is outwardly folded later. The second refers to FIG. 4B, in which the third portion 19 is inwardly folded first, and the first portion 15 is inwardly folded later. Figure 18

[0175] In one embodiment, when the second portion 17 and the third portion 19 are switched from an unfolded state to a folded state, the shear deformation of the first bonding structure 3 along the first direction is greater than or equal to a second threshold value. The second threshold value can also be obtained by the above-mentioned testing method.​​​​

[0176] In the embodiment shown, the first adhesive structure 3 includes a plurality of adhesive portions 31 spaced apart along the first direction. The size of the adhesive portions 31 in the first direction is less than or equal to 10 mm.

[0177] Preferably, the second threshold value is greater than or equal to 20 um. This ensures that the first adhesive structure 3 has sufficient deformability in the first direction when the second bending portion 18 is bent, effectively releasing the shear force generated by the film layer of the display screen 1 when it is dislocated, and avoiding the occurrence of reverse arching of the first bending portion 16. Specifically, the first threshold value can be 20 um, 22 um, 25 um, 28 um, 30 um, 35 um, 40 um, 45 um, 50 um, etc., without limitation.

[0178] Please continue to refer to Figure 11 In the embodiment shown, the first adhesive structure 3 includes a plurality of adhesive portions 31 spaced apart along the first direction. The size of the adhesive portions 31 in the first direction is less than or equal to 10 mm.

[0179] In the embodiment shown, the first adhesive structure 3 includes a plurality of adhesive portions 31 spaced apart along the first direction. The size of the adhesive portions 31 in the first direction is less than or equal to 10 mm.

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

[0181] Preferably, the thickness of the adhesive portions 31 is greater than or equal to 0.15 mm, and the size of the adhesive portions 31 in the first direction is less than or equal to 10 mm. The greater the thickness of the adhesive portions 31, the stronger the deformability of the first adhesive structure 3 in the first direction. Specifically, the thickness of the adhesive portions 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 limitation.

[0182] Another embodiment of the present application discloses a display device, which comprises the display module 100 in the above-mentioned embodiments, and can be a smart device (such as a mobile phone, a VR device, a computer, a television, a vehicle-mounted display, etc.).

[0183] The display device in the embodiment, the display module 100 of which, 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 comprises a plurality of bonding parts 31, the plurality of bonding parts 31 are arranged at intervals along the length direction of the display screen 1 in the unfolded state, the deformability of the first bonding structure 3 along the length direction of the display screen 1 in the unfolded state is improved, the shear force generated when the film layer of the display screen 1 is dislocated can be effectively released, the reverse arch of the bending area 11 of the display screen 1 is avoided, the display performance of the display module 100 is improved, and the performance of the display device is further improved.

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

[0185] It should be noted that some embodiments of the present application have been described above. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recited in the claims can be performed in a different order and still achieve desirable results. Additionally, the process depicted in the figures does not necessarily require the particular order shown, or sequential order to achieve the desired results. In certain implementations, multitasking and parallel processing can be advantageous.

[0186] The embodiments of the present application are intended to cover all such alternatives, modifications and variations as falling within the scope of the appended claims. Accordingly, any and all such modifications, variations or equivalents that fall within the spirit and scope of the embodiments of the present application are intended to be included herein.

Claims

1. A display module, characterized in that, include: The display screen has a display surface and a back surface facing away from each other, and the display screen includes at least one bending area; The middle frame is located on the back of the display screen; The first adhesive structure is bonded between the back of the display screen and the middle frame; The first adhesive structure includes a plurality of adhesive portions, which are spaced apart along a first direction; wherein the first direction is the length direction of the display screen in its unfolded state. The adhesive portion has a dimension of 50 mm or more in the second direction, where the second direction is the width direction of the display screen in its unfolded state; the adhesive portion has a dimension of 10 mm or less in the first direction.

2. The display module as described in claim 1, characterized in that, Along the first direction, the distance between two adjacent adhesive portions is less than or equal to 20 mm.

3. The display module as described in claim 1, characterized in that, Along the first direction, the ratio of the distance between two adjacent adhesive portions to the length of the unfolded display screen is less than or equal to 1 / 8.

4. The display module as described in claim 1, characterized in that, The modulus of the adhesive portion is less than or equal to 500 kPa; And / or, the thickness of the adhesive portion is greater than or equal to 0.15 mm.

5. The display module as described in any one of claims 1 to 4, characterized in that, The display screen includes a screen body and a support structure. The support structure is located on the side of the screen body near the middle frame. The first adhesive structure is disposed between the support structure and the middle frame. The support structure includes a plurality of support portions corresponding to the adhesive portions. The plurality of support portions are spaced apart along the first direction. A compressible space is formed between two adjacent support portions, and the support structure further includes a compressible structure located within the compressible space; Along the first direction, two adjacent support portions are connected by the compressible structure.

6. The display module as described in claim 5, characterized in that, Along the first direction, the size of the compressible space is less than or equal to 0.8 mm.

7. The display module as described in claim 5, characterized in that, Along the first direction, a first deformation space is formed between two adjacent adhesive 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.

8. The display module as described in claim 7, characterized in that, Along the first direction, the size of the first deformation space is less than or equal to 20 mm.

9. The display module as described in claim 5, characterized in that, The supporting structure is made of materials including metal or carbon fiber.

10. The display module as described in claim 5, characterized in that, The compressible structure includes a deformable part and a connecting part, wherein the deformable part is connected to two adjacent support parts through the connecting part.

11. The display module as described in claim 10, characterized in that, Along the first direction, the size of the connecting portion is less than or equal to 0.2 mm, and the size of the deformable portion includes 0.2-0.4 mm.

12. The display module as described in claim 5, characterized in that, The display module also includes a reinforcing structure, which is fitted to the compressible structure.

13. The display module as described in claim 12, characterized in that, The reinforcing structure is located on the side of the compressible structure near the middle frame.

14. The display module as described in claim 12, characterized in that, The reinforcing structure is made of rubber.

15. The display module as described in claim 1, characterized in that, The display screen includes a first part, a first bent part, a second part, a second bent part, and a third part connected in sequence. The middle frame includes a first middle frame corresponding to the first part, a second middle frame corresponding to the second part, and a third middle frame corresponding to the third part. The first adhesive structure is at least disposed between the first middle frame and the first part; or, the first adhesive structure is at least disposed between the third middle frame and the third part; or, the first adhesive structure is disposed 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.

16. The display module as described in claim 15, characterized in that, The display module further includes a first support plate, which is correspondingly disposed with respect to the first bent portion, and the first adhesive structure is further disposed between the first support plate and the first bent portion; and / or The display module further includes a second support plate, which is correspondingly disposed with the second bending portion, and the first adhesive structure is also disposed between the second support plate and the second bending portion.

17. The display module as described in claim 16, characterized in that, Along the first direction, the adhesive portion disposed between the first support plate and the first bent portion has a size of 1-3 mm.

18. The display module as described in claim 16, characterized in that, Along the first direction, the adhesive portion disposed between the second support plate and the second bent portion has a size of 1-3 mm.

19. The display module as described in claim 16, characterized in that, The first support plate includes a first support portion and a second support portion that are 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.

20. The display module as described in claim 16, characterized in that, The second support plate includes a third support portion and a fourth support portion 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.

21. The display module as described in claim 15, characterized in that, The first part can be folded inward or outward relative to the second part through the first bending portion, and the third part can be folded inward or outward relative to the second part through the second bending portion.

22. The display module as described in claim 15, characterized in that, The first bend takes the shape of either a U-shape or a teardrop shape after bending, and the second bend takes the shape of either a U-shape or a teardrop shape after bending.

23. The display module as described in claim 15, characterized in that, The display module further includes a second adhesive structure, which is disposed between the second middle frame and the second part; The first adhesive structure is disposed between the first middle frame and the first part; When the second part and the third part switch from the unfolded state to the folded state, the shear deformation of the first adhesive structure is greater than that of the second adhesive 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 switch from the unfolded state to the folded state, the shear deformation of the first adhesive structure is greater than the shear deformation of the second adhesive structure.

24. The display module as described in claim 23, characterized in that, The orthographic projection of the second adhesive structure onto the second middle frame includes a ring shape.

25. The display module as described in claim 1 or 21, characterized in that, The display module also includes: A base is disposed between the first adhesive structure and the middle frame and is bonded to the first adhesive structure. The base is configured to move relative to the middle frame in a first direction.

26. The display module as described in claim 25, characterized in that, The distance between the base and the middle frame that can move relative to each other along the first direction is less than or equal to 50 μm.

27. The display module as described in claim 25, characterized in that, The middle frame is provided with a first movable groove, and the base is at least partially located in the first movable groove. The base can move in the first movable groove along the first direction.

28. The display module as described in claim 27, characterized in that, 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.

29. The display module as described in claim 27, characterized in that, The middle frame is provided with a limiting part, and the orthographic projection of the limiting part on the middle frame is located within the orthographic projection of the first movable groove on the middle frame.

30. The display module as described in claim 25, characterized in that, The middle frame is provided with a movable part, and 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 within the second movable groove.

31. The display module as described in claim 1, characterized in that, The middle frame is provided with a receiving groove, and the adhesive part is at least partially located in the receiving groove; Along the first direction, the size of the receiving groove is larger than the size of the corresponding adhesive portion, so as to form a second deformation space for the adhesive portion to deform.

32. The display module as described in claim 31, characterized in that, The depth of the receiving groove is 150um-250um.

33. A display module, characterized in that, include: The display screen has a display surface and a back surface facing away from each other. The display screen includes a first part, a first bending part, a second part, a second bending part and a third part connected in sequence. The first part and the second part are folded or unfolded through the first bending part, and the second part and the third part are folded or unfolded through the second bending part. The middle frame is located on the back of the display screen; The first adhesive structure is bonded between the back of the display screen and the middle frame; When the first part and the second part switch from the unfolded state to the folded state, the shear deformation of the first adhesive structure along the first direction is greater than or equal to the first threshold; wherein, the first direction is the length direction of the display screen in the unfolded state.

34. The display module as described in claim 33, characterized in that, The first threshold is greater than or equal to 20 μm.

35. The display module as described in claim 33, characterized in that, When the second part and the third part switch from the unfolded state to the folded state, the shear deformation of the first adhesive structure along the first direction is greater than or equal to the second threshold.

36. The display module as described in claim 35, characterized in that, The second threshold is greater than or equal to 20 μm.

37. The display module as described in any one of claims 33 to 36, characterized in that, The first adhesive structure includes a plurality of adhesive portions spaced apart along the first direction, wherein the dimension of the adhesive portion in the first direction is less than or equal to 10 mm.

38. The display module as described in claim 37, characterized in that, The modulus of the adhesive portion is less than or equal to 500 kPa.

39. The display module as described in claim 37, characterized in that, 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.

40. The display module as described in claim 33, characterized in that, 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.

41. A display device, characterized in that, Includes the display module as described in any one of claims 1-40.

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