Display module, preparation method thereof and display device

Abstract

The invention provides a display module, a preparation method thereof and a display device. The display module comprises a display panel, the display panel comprises a first extension part, a bending part and a second extension part which are connected in sequence, and the first extension part and the second extension part are oppositely arranged; the first supporting structure is located on the side, close to the second extending part, of the first extending part and comprises a first part and a second part which are connected with each other, the first part is located on the side, away from the bent part, of the second part, and at least part of the second part extends to the side, close to the first extending part, of the bent part; and the first flexible layer is matched with the first supporting structure and is positioned at the bending part. According to the technical scheme, under the condition that the bending radius of the bending part is reduced, the phenomenon that a screen body of the display panel is tightly folded is almost avoided, the situation that an inorganic layer and metal wires in the display panel are broken is almost avoided, the yield of the display module is high, and the display module with a narrow frame can be obtained easily.

Description

Technical Field

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

[0002] In the display field, with the development and design of flexible materials, the market demand for diversified forms of display terminal products is increasing. Folding (such as inward folding, outward folding, etc.), curling, wearable and narrow-framed smart display terminals have received widespread attention. At present, the narrowing of the display module frame is mainly aimed at the lower frame. In order to achieve the narrower frame requirements, reducing the bending radius of the flexible display panel is the most direct and effective way. However, due to the limitations of related technologies, the current display module frame narrowing technology still needs to be improved. Summary of the invention

[0003] In view of this, embodiments of the present application provide a display module, a method for preparing the same, and a display device.

[0004] In a first aspect, the present application provides a display module, comprising:

[0005] A display panel, the display panel comprising a first extension portion, a bending portion and a second extension portion connected in sequence, the first extension portion and the second extension portion being arranged opposite to each other;

[0006] A first supporting structure is located on a side of the first extending portion close to the second extending portion, the first supporting structure comprises a first portion and a second portion connected to each other, the first portion is located on a side of the second portion away from the bending portion, and the second portion at least partially extends to a side of the bending portion close to the first extending portion;

[0007] The first flexible layer cooperates with the first supporting structure and is located at the bending portion.

[0008] In one embodiment, the elastic modulus of the first flexible layer is lower than the elastic modulus of the first supporting structure; along the thickness direction of the first supporting layer, the first flexible layer is located between the second portion and the bending portion of the first supporting structure,

[0009] Preferably, the elastic modulus of the first flexible layer is greater than or equal to 10 MPa and less than or equal to 200 MPa;

[0010] Preferably, the material of the first flexible layer includes at least one of silicone, polyimide, polyurethane, thermoplastic polyurethane elastomer, thermoplastic polyester elastomer, styrene-based thermoplastic elastomer and polyamide-based thermoplastic elastomer.

[0011] In one embodiment, the thickness of the second portion is less than or equal to the thickness of the first portion;

[0012] Preferably, in a direction parallel to the first portion and pointing toward the second portion, the thickness of the second portion gradually decreases;

[0013] Preferably, in a direction parallel to the first portion and pointing toward the second portion, the thickness of the first flexible layer gradually increases.

[0014] In one embodiment, the second portion of the first support structure includes a first surface and a second surface disposed opposite to each other, and at least a portion of the first surface is in direct contact with the first flexible layer;

[0015] Preferably, the second surface comprises a curved surface;

[0016] Preferably, the connecting surface of the first portion and the second portion is arranged corresponding to the bending starting point of the bending portion or the bending starting point;

[0017] Preferably, in the second portion extending to the side of the bending portion close to the first extending portion, the ratio of the thickness of the second portion at any position to the bending stress received by the first surface is a constant value.

[0018] In one embodiment, it further comprises: a second supporting structure located on a side of the second extension portion close to the first extension portion, the second supporting structure comprising a third portion and a fourth portion connected to each other, the third portion being located on a side of the fourth portion away from the bending portion, and the fourth portion at least partially extending to a side of the bending portion close to the second extension portion;

[0019] The thickness of the fourth portion is less than or equal to the thickness of the third portion;

[0020] Preferably, in a direction parallel to the third portion and pointing toward the fourth portion, the thickness of the fourth portion gradually decreases;

[0021] Preferably, the first supporting structure and the second supporting structure are spaced apart from each other;

[0022] Preferably, the fourth portion of the second supporting structure comprises a third surface and a fourth surface that are arranged opposite to each other, and at least a portion of the third surface is in direct contact with the bending portion;

[0023] Preferably, the fourth surface comprises a curved surface;

[0024] Preferably, the connecting surface between the third portion and the fourth portion is arranged corresponding to the bending end point or the bending starting point of the bending portion;

[0025] Preferably, in the fourth portion extending to the side of the bending portion close to the second extending portion, the ratio of the thickness of the fourth portion at any position to the bending stress received by the third surface is a constant value.

[0026] In one embodiment, it further comprises: a second flexible layer, the second flexible layer cooperates with the second supporting structure and is located at the bending portion;

[0027] Preferably, the elastic modulus of the second flexible layer is lower than the elastic modulus of the fourth portion; along the thickness direction of the second flexible layer, the second flexible layer is located between the fourth portion and the bending portion;

[0028] Preferably, the elastic modulus of the second flexible layer is greater than or equal to 10 MPa and less than or equal to 200 MPa;

[0029] Preferably, in a direction parallel to the third portion and pointing toward the fourth portion, the thickness of the second flexible layer gradually increases;

[0030] Preferably, the material of the second flexible layer includes at least one of silicone, polyimide, polyurethane, thermoplastic polyurethane elastomer, thermoplastic polyester elastomer, styrene-based thermoplastic elastomer and polyamide-based thermoplastic elastomer.

[0031] In one embodiment, it further includes: a padding structure located between the first supporting structure and the second extension portion;

[0032] Preferably, it also includes: a first adhesive layer, located between the first supporting structure and the padding structure;

[0033] Preferably, it further comprises: a second adhesive layer, located on a side of the bent portion away from the padding structure;

[0034] Preferably, the second adhesive layer extends to a portion of the surface of the first supporting structure facing away from the second supporting structure, and / or the second adhesive layer extends to a portion of the surface of the second supporting structure facing away from the first supporting structure;

[0035] Preferably, the bending radius of the bending portion is 0.1 mm to 0.2 mm.

[0036] A second aspect of the present application provides a method for assembling a display module, comprising:

[0037] A first flexible layer is arranged on the first supporting structure, wherein the elastic modulus of the first flexible layer is lower than the elastic modulus of the first supporting structure, and the first supporting structure comprises a first part and a second part connected to each other;

[0038] The display panel is fixed on one side of the first supporting structure, and the display panel is bent with the cooperation of the second part of the first supporting structure and the first flexible layer to obtain a first extending part, a bending part and a second extending part connected in sequence; the first flexible layer is located between the second part and the bending part.

[0039] In one embodiment, the step of disposing the first flexible layer on the first supporting structure comprises: disposing the first flexible layer on a side of the first supporting structure facing away from the padding structure;

[0040] Preferably, after the step of providing the first flexible layer on the side of the first supporting structure facing away from the raising structure, the method further comprises:

[0041] A second supporting structure is fixed on a side of the cushion structure away from the first supporting structure; the second supporting structure comprises a third part and a fourth part connected to each other, and a thickness of the fourth part is less than or equal to a thickness of the third part;

[0042] Preferably, before the step of fixing the display panel on one side of the first supporting structure, the method further comprises:

[0043] A second flexible layer is fixed on a side of the fourth portion facing away from the first supporting structure;

[0044] Preferably, after the display panel is bent, the method further comprises: applying glue on a side of the bent portion away from the padding structure.

[0045] A third aspect of the present application provides a display device, comprising the aforementioned display module, or comprising a display module assembled by the aforementioned assembly method.

[0046] According to the display module provided by the embodiment of the present application, the first flexible layer can buffer the extrusion stress from the display panel, and the first flexible layer hardly generates excessive end-side extrusion stress on the display panel. When the bending radius of the bending portion is reduced, the display panel body hardly folds, and the inorganic layer and metal wiring inside the display panel hardly break. The yield of the display module is high, which is conducive to obtaining a display module with a narrow frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 It is a schematic diagram of the structure of a display module in one embodiment of the present application.

[0048] Figure 2 It is a structural schematic diagram of a display module in the related technology.

[0049] Figure 3 This is a schematic diagram of the structure of a display module in another embodiment of the present application.

[0050] Figure 4 This is a schematic diagram of the structure of a display module in another embodiment of the present application.

[0051] Figure 5 This is a schematic diagram of the structure of a display module in another embodiment of the present application.

[0052] Figure 6 This is a schematic diagram of the structure of a display module in another embodiment of the present application.

[0053] Figure 7 This is a schematic diagram of the structure of a display module in another embodiment of the present application.

[0054] Figure 8 This is a schematic diagram of the structure of a display module in another embodiment of the present application.

[0055] Fig. 9 It is a schematic diagram of the process of preparing a display module in one embodiment of the present application. DETAILED DESCRIPTION

[0056] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0057] In addition, in order to better illustrate the present application, numerous specific details are given in the following specific embodiments. It should be understood by those skilled in the art that the present application can also be implemented without certain specific details. In some examples, methods and means well known to those skilled in the art are not described in detail in order to highlight the subject matter of the present application.

[0058] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0059] In addition, the terms “first”, “second”, etc., if used, are merely used to distinguish between the descriptions and should not be understood as indicating or implying relative importance.

[0060] The present application provides a display module according to a first aspect. Figure 1 The structural schematic diagram of the display module shown in the figure includes: a display panel 100 , a first supporting structure 200 and a first flexible layer 400 .

[0061] The display panel 100 includes a first extending portion 110 , a bending portion 120 and a second extending portion 130 which are connected in sequence. The first extending portion 110 and the second extending portion 130 are disposed opposite to each other.

[0062] Optionally, the first supporting structure 200 is located on a side of the first extension portion 110 close to the second extension portion 130, and the first supporting structure 200 includes a first portion 210 and a second portion 220 connected to each other, the first portion 210 is located on a side of the second portion 220 away from the bending portion 120, and the second portion 220 at least partially extends to a side of the bending portion 120 close to the first extension portion 110.

[0063] Optionally, the first flexible layer 400 cooperates with the first supporting structure 200 and is located at the bending portion 120. The first flexible layer 400 can buffer the extrusion stress from the display panel 100, and the first flexible layer 400 will hardly generate excessive end-side extrusion stress on the display panel 100. When the bending radius of the bending portion 120 is reduced, the display panel body will hardly be folded, and the inorganic layer and metal wiring inside the display panel will hardly be broken. The yield of the display module is high, which is conducive to obtaining a display module with a narrow frame.

[0064] In one embodiment, the elastic modulus of the first flexible layer 400 is lower than that of the second portion 220, and along the thickness direction of the first flexible layer 400, the first flexible layer 400 is located between the second portion 220 and the bending portion 120. Therefore, the first flexible layer 400 is more flexible and more easily deformed than the second portion 220, which is more conducive to relieving the extrusion stress from the display panel 100. Under the premise of further reducing the bending radius of the display panel 100, it is less likely to cause the display panel 100 to be folded, and the inorganic layer and metal wiring inside the display panel will not be broken, thereby further improving the yield of the display module.

[0065] Exemplarily, the elastic modulus of the first flexible layer 400 is greater than or equal to 10 MPa and less than or equal to 200 MPa, for example, it can be 10 MPa, 20 MPa, 40 MPa, 60 MPa, 80 MPa, 100 MPa, 120 MPa, 140 MPa, 160 MPa, 180 MPa or 200 MPa, etc. The elastic modulus of the first flexible layer 400 is appropriate, which is more conducive to relieving the extrusion stress from the display panel 100.

[0066] In one embodiment, the material of the first flexible layer 400 includes at least one of silicone, polyimide, polyurethane, thermoplastic polyurethane elastomer (TPU), thermoplastic polyester elastomer (TPEE), styrene-based thermoplastic elastomer (TPES) and polyamide-based thermoplastic elastomer (TPEA). Therefore, the elastic modulus of the first flexible layer 400 is relatively small.

[0067] Optionally, the thickness of the second portion 220 is less than or equal to the thickness of the first portion 210. For example, in a direction parallel to the first portion 210 pointing to the second portion 220, the thickness of the second portion 220 gradually decreases; for another example, in a direction parallel to the first portion 210 pointing to the second portion 220, the thickness of the second portion 220 decreases in a fluctuating manner; for another example, the second portion 220 is divided into a plurality of sub-portions, the thickness of some of the sub-portions is less than the thickness of the first portion 210, and the thickness of some of the sub-portions is equal to the thickness of the first portion 210.

[0068] Optionally, the thickness distribution of the first flexible layer 400 and the second portion 220 may be adjusted according to the bending stress distribution of the first flexible layer 400 to avoid excessive extrusion stress, thereby achieving a better narrow frame effect.

[0069] In one embodiment, in a direction parallel to the first portion 210 pointing to the second portion 220, the thickness of the second portion 220 gradually decreases, and the thickness of the first flexible layer 400 gradually increases. As a result, the thickness of the end of the first flexible layer 400 away from the first portion 210 is thicker, and the end-side extrusion stress on the display panel 100 is smaller. The thickness of the second portion 220 gradually decreases, and the second portion 220 can be deformed with the bending of the bending portion, which is less likely to cause the display panel 100 to be bent, and the inorganic layer and metal wiring inside the display panel will not be broken, which further improves the display module yield and is more conducive to further reducing the bending radius of the display panel 100.

[0070] In the related art, refer to Figure 2 As shown in the structural schematic diagram of the display module, the thickness of the support structure 200 is uniform. At the bending starting point A of the bending portion 120, under the influence of the bending process tolerance, the end of the support structure 200 close to the bending portion 120 can easily enter the bending zone. Since the thickness of the support structure 200 is relatively thick, the support structure 200 entering the bending zone will hardly deform as the bending portion 120 is bent, which will increase excessive stress on the local bending portion 120 and cause a dead bend at that position, thereby causing the internal inorganic layer and internal metal wiring of the display panel 100 to break, resulting in display failure. In the embodiment of the present application, a first flexible layer 400 is arranged between the second portion 220 and the bending portion 120, and a portion of the second portion 220 extends to the bending area. The first flexible layer 400 is deformed as the bending portion 120 is bent. While ensuring the supporting effect, the first flexible layer 400 does not generate excessive end-side extrusion stress. When the bending radius of the bending portion 120 is reduced, the display panel screen body is almost not folded, so that the yield of the display module is higher and it has a narrower frame.

[0071] In one embodiment, referring to Figure 1 The second portion 220 of the first flexible layer 400 includes a first surface 221 and a second surface 222 that are arranged opposite to each other, and at least a portion of the first surface 221 is in direct contact with the first flexible layer 400. Therefore, the second portion 220 and the first flexible layer 400 cooperate to provide a better support effect on the bending portion 120, and the second portion 220 can be deformed as the bending portion 120 is bent, and a dead bend phenomenon will not be generated in the bending portion 120.

[0072] Exemplarily, the second surface 222 includes a curved surface, which facilitates adjusting the thickness distribution of the second portion 220 according to the bending stress distribution of the second portion 220 to avoid excessive extrusion stress, thereby further reducing the frame of the display module.

[0073] In one embodiment, the connection surface S1 of the first portion 210 and the second portion 220 is arranged corresponding to the bending starting point A or the bending end point B of the bending portion 120. It should be noted that the connection surface S1 of the first portion 210 and the second portion 220 is arranged corresponding to the bending starting point A or the bending end point B of the bending portion 120, which means that the bending starting point A or the bending end point B of the bending portion 120 is located on the connection surface S1 of the first portion 210 and the second portion 220. Therefore, the second portion 220 and the first flexible layer 400 cooperate with each other to provide excellent support for the bending portion 120, and the second portion 220 can be deformed at the bending starting point A or the bending end point B, which is conducive to reducing the bending radius of the display panel 100.

[0074] Exemplarily, the bending radius of the bending portion 120 is 0.1 mm to 0.2 mm, for example, 0.1 mm, 0.12 mm, 0.14 mm, 0.16 mm, 0.18 mm or 0.2 mm, etc. Thus, the bending radius of the bending portion 120 is small, so that the frame of the display module is narrower, which is conducive to increasing the area of ​​the display module display area and improving the display effect of the display module.

[0075] In the display module of the present application, the thickness distribution of the second part 220 can be adjusted according to the distribution of the bending stress received by the second part 220. In one embodiment, in the second part 220 extending to the side of the bending part 120 close to the first extension part 110, the ratio of the thickness of the second part 220 at any position to the bending stress received by the first surface 221 is a constant, that is, the thickness of the second part 220 at any position is proportional to the bending stress received by the first surface 221. It can be understood that at any position, the ratio of the thickness of the second part 220 to the bending stress received by the first surface 221 can be a stress value coefficient under the conditions of unit thickness and unit deformation of the second part 220, and the stress value coefficient is a constant.

[0076] In one embodiment, referring to Figure 3The structural schematic diagram of the display module shown in the figure, the display module also includes: a second support structure 300, located on the side of the second extension portion 130 close to the first extension portion 110, the second support structure 300 includes a third portion 310 and a fourth portion 320 connected to each other, the third portion 310 is located on the side of the fourth portion 320 away from the bending portion 120, and the fourth portion 320 at least partially extends to the side of the bending portion 120 close to the second extension portion 120; the thickness of the fourth portion 320 is less than or equal to the thickness of the third portion 310. The fourth portion 320 can be deformed with the bending of the bending portion 120, while ensuring the supporting function, the fourth portion 320 will not generate excessive end-side extrusion stress, and when the bending radius of the bending portion 120 is reduced, the display panel body will hardly be bent, and the inorganic layer and metal wiring inside the display panel will hardly be broken, and the yield of the display module is high, which is conducive to obtaining a display module with a narrow frame.

[0077] Exemplarily, the thickness of the fourth part 320 is less than or equal to the thickness of the third part 310, which may include but is not limited to the following situations: for example, in a direction parallel to the first part 210 pointing to the second part 220, the thickness of the second part 220 gradually decreases; for another example, in a direction parallel to the first part 210 pointing to the second part 220, the thickness of the second part 220 decreases in a fluctuating manner; for another example, the second part 220 is divided into multiple sub-parts, the thickness of some sub-parts is less than the thickness of the first part 210, and the thickness of some sub-parts is equal to the thickness of the first part 210.

[0078] Optionally, the thickness distribution of the fourth portion 320 can be adjusted according to the bending stress distribution of the fourth portion 320 to avoid excessive extrusion stress, which is conducive to further reducing the frame of the display module. Exemplarily, in the direction parallel to the third portion 310 pointing to the fourth portion 320, the thickness of the fourth portion 320 gradually decreases.

[0079] In one embodiment, referring to Figure 3 The fourth portion 320 of the second supporting structure 300 includes a third surface 321 and a fourth surface 322 that are arranged opposite to each other, and at least a portion of the third surface 321 is in direct contact with the bending portion 120. Therefore, the fourth portion 320 has a better supporting effect on the bending portion 120, and the fourth portion 320 can be deformed as the bending portion 120 is bent, and a dead bend phenomenon will not occur in the bending portion 120.

[0080] Exemplarily, the fourth surface 322 includes a curved surface, which facilitates adjusting the thickness distribution of the fourth portion 320 according to the bending stress distribution of the fourth portion 320 to avoid excessive extrusion stress, thereby further reducing the frame of the display module.

[0081] In one embodiment, the connection surface S2 between the third portion 310 and the fourth portion 320 is arranged corresponding to the bending end point B or the bending starting point A of the bending portion 120; it should be noted that the connection surface S2 between the third portion 310 and the fourth portion 320 is arranged corresponding to the bending end point B or the bending starting point A of the bending portion 120, which means that the bending end point B or the bending starting point A of the bending portion 120 is located on the connection surface S2 between the third portion 310 and the fourth portion 320. As a result, the fourth portion 320 has an excellent supporting effect on the bending portion 120, and the fourth portion 320 can be deformed at the bending end point B or the bending starting point A, which is conducive to reducing the bending radius of the display panel 100.

[0082] Exemplarily, the connection surface S1 of the first portion 210 and the second portion 220 is arranged corresponding to the bending end point B of the bending portion 120 , and the connection surface S2 of the third portion 310 and the fourth portion 320 is arranged corresponding to the bending starting point A of the bending portion 120 .

[0083] Exemplarily, the connection surface S1 of the first portion 210 and the second portion 220 is arranged corresponding to the bending starting point A of the bending portion 120 , and the connection surface S2 of the third portion 310 and the fourth portion 320 is arranged corresponding to the bending end point B of the bending portion 120 .

[0084] In the display module of the present application, the thickness distribution of the fourth portion 320 can be adjusted according to the distribution of the bending stress received by the fourth portion 320. In one embodiment, in the fourth portion 320 extending to the side of the bending portion 120 close to the second extension portion 130, the ratio of the thickness of the fourth portion 320 at any position to the bending stress received by the third surface 321 is a constant, that is, the thickness of the fourth portion 320 at any position is proportional to the bending stress received by the third surface 321. It can be understood that the ratio of the thickness of the fourth portion 320 at any position to the bending stress received by the third surface 321 can be a stress value coefficient under the conditions of unit thickness and unit deformation of the fourth portion 320, and the stress value coefficient is a constant.

[0085] In one embodiment, referring to Figure 4 The structural diagram of the display module shown in the figure further includes: a second flexible layer 500, and the second flexible layer 500 cooperates with the second support structure 300 and is located at the bending portion 120. Therefore, the second flexible layer 500 can further buffer the extrusion stress from the display panel 100, and the second flexible layer 500 will hardly generate excessive end-side extrusion stress on the display panel 100. When the bending radius of the bending portion 120 is reduced, the display panel body will hardly be folded, and the inorganic layer and metal wiring inside the display panel will hardly be broken. The yield of the display module is high, which is conducive to obtaining a display module with a narrow frame.

[0086] Exemplarily, the third surface 321 of the fourth portion 320 may directly contact the second flexible layer 500 .

[0087] Optionally, the elastic modulus of the second flexible layer 500 is lower than the elastic modulus of the fourth portion 320, and along the thickness direction of the second flexible layer 500, the second flexible layer 500 is located between the fourth portion 320 and the bending portion 120. As a result, the second flexible layer 500 is more flexible and more easily deformed than the fourth portion 320, which is more conducive to relieving the extrusion stress from the display panel 100, further reducing the bending radius of the display panel 100, and further improving the display module yield. Exemplarily, the elastic modulus of the second flexible layer 500 is greater than or equal to 10MPa and less than or equal to 200MPa, for example, it can be 10MPa, 20MPa, 40MPa, 60MPa, 80MPa, 100MPa, 120MPa, 140MPa, 160MPa, 180MPa or 200MPa, etc. The elastic modulus of the second flexible layer 500 is appropriate, which is more conducive to relieving the extrusion stress from the display panel 100.

[0088] In one embodiment, in a direction parallel to the third portion 310 pointing to the fourth portion 320, the thickness of the fourth portion 320 gradually decreases, and the thickness of the second flexible layer 500 gradually increases. As a result, the fourth portion 320 is more flexible, and the end portion of the second flexible layer 500 away from the third portion 310 is thicker, so that the end side extrusion stress of the display panel 100 is smaller, and it is less likely to cause the display panel 100 to be folded, and the inorganic layer and metal wiring inside the display panel will not be broken, which further improves the yield of the display module and is more conducive to further reducing the bending radius of the display panel 100.

[0089] It is understandable that the thickness distribution of the second flexible layer 500 and the fourth portion 320 can be adjusted according to the bending stress distribution of the second flexible layer 500 to avoid excessive extrusion stress, thereby achieving a better narrow frame effect.

[0090] In one embodiment, the material of the second flexible layer 500 includes at least one of silicone polyimide, polyurethane, thermoplastic polyurethane elastomer (TPU), thermoplastic polyester elastomer (TPEE), styrene-based thermoplastic elastomer (TPES) and polyamide-based thermoplastic elastomer (TPEA). Therefore, the elastic modulus of the second flexible layer 500 is relatively small.

[0091] Exemplarily, the first supporting structure 200 and the second supporting structure 300 are arranged at an interval.

[0092] Exemplarily, the material of the first support structure 200 includes polyethylene terephthalate (PET), and the material of the second support structure 300 includes polyethylene terephthalate (PET).

[0093] In one embodiment, referring to Figure 5 and Figure 6 The structural diagram of the display module shown in the figure further includes: a cushioning structure 600 located between the first supporting structure 200 and the second extension portion 130. Thus, the cushioning structure 600 is conducive to providing support for the first supporting structure 200 and the display panel 100, and is conducive to improving the stability of the display module.

[0094] In one embodiment, referring to Figure 5 and Figure 6 In the structural schematic diagram of the display module shown, the padding structure 600 is located between the first supporting structure 200 and the second supporting structure 300 .

[0095] In one embodiment, referring to Figure 7 and Figure 8 The display module further includes: a first adhesive layer 700, which is located between the first support structure 200 and the padding structure 600. Thus, the first support structure 200 and the padding structure 600 are stably combined together, thereby improving the stability of the display module.

[0096] In one embodiment, referring to Figure 7 and Figure 8 The display module further includes: a second adhesive layer 800, which is located on the side of the bending portion 120 away from the padding structure 600. This facilitates bonding the display panel 100 and the subsequent film layer structure together, thereby improving the stability of the display module.

[0097] In one embodiment, referring to Figure 7 and Figure 8 , the second adhesive layer 800 extends to a portion of the surface of the first supporting structure 200 that is away from the second supporting structure 300 ; the second adhesive layer 800 extends to a portion of the surface of the second supporting structure 300 that is away from the first supporting structure 200 .

[0098] For example, refer to Figure 7 and Figure 8 The bending portion 120 , part of the first extending portion 110 , and part of the second extending portion 130 are located in the non-display area NA, and the remaining part of the first extending portion 110 and the remaining part of the second extending portion 130 are located in the display area AA.

[0099] It can be understood that the display panel 100 in the embodiment of the present application is a flexible display panel.

[0100] The second aspect of the present application provides a method for assembling a display module, referring to Fig. 9 The schematic flow chart of the assembly method shows that the assembly method of the display module includes the following steps.

[0101] S100: a first flexible layer is disposed on a first supporting structure, wherein an elastic modulus of the first flexible layer is lower than an elastic modulus of the first supporting structure, and the first supporting structure comprises a first portion and a second portion connected to each other.

[0102] Exemplarily, in a direction parallel to the first portion and pointing toward the second portion, the thickness of the second portion gradually decreases.

[0103] It should be noted that the first supporting structure and the first flexible layer are consistent with the above description and will not be described in detail here.

[0104] Exemplarily, the method of setting the first flexible layer on the first supporting structure includes but is not limited to setting the first flexible layer on the first supporting structure, coating the first flexible material layer, and obtaining the first flexible layer after curing; or fixing the first flexible layer on the second part with an adhesive.

[0105] It should be noted that the first flexible layer is consistent with the above description and will not be described in detail here.

[0106] In one embodiment, the step of arranging the first flexible layer on the first supporting structure includes: arranging the first flexible layer on a side of the first supporting structure facing away from the raising structure.

[0107] Optionally, after the step of setting a first flexible layer on the side of the first supporting structure away from the raising structure, it also includes: fixing a second supporting structure on the side of the raising structure away from the first supporting structure; the second supporting structure includes a third part and a fourth part connected to each other, and the thickness of the fourth part is less than or equal to the thickness of the third part.

[0108] Optionally, before the step of fixing the display panel on one side of the first supporting structure, the method further includes: fixing a second flexible layer on a side of the fourth portion away from the first supporting structure.

[0109] Exemplarily, the method of fixing the second flexible layer on the side of the fourth part facing away from the first supporting structure includes but is not limited to coating a second flexible material layer on the side of the fourth part facing away from the first supporting structure, and obtaining the second flexible layer after curing; or using an adhesive to fix the second flexible layer on the side of the fourth part facing away from the first supporting structure.

[0110] Exemplarily, in a direction parallel to the third portion and pointing toward the fourth portion, the thickness of the fourth portion gradually decreases.

[0111] It should be noted that the second flexible layer is consistent with the above description and will not be described in detail here.

[0112] S200: Fixing the display panel on one side of the first supporting structure, and bending the display panel with the cooperation of the second part of the first supporting structure and the first flexible layer to obtain a first extending part, a bending part and a second extending part connected in sequence, wherein the first flexible layer is located between the second part and the bending part.

[0113] It should be noted that the second part at least partially extends to the side of the bending part close to the first extension part, the fourth part at least partially extends to the side of the bending part close to the second extension part, the first flexible layer is located between the second part and the bending part, and the second flexible layer is located between the fourth part and the bending part.

[0114] In one embodiment, after the display panel is bent, the method further comprises: applying glue on a side of the bent portion away from the padding structure.

[0115] A third aspect of the present application provides a display device, comprising the aforementioned display module, or comprising a display module assembled by the aforementioned assembly method.

[0116] It should be noted that, in addition to the display module as described above, the display device may also include other structures that a conventional display device should have, such as a power supply, a housing, etc., which will not be elaborated here.

[0117] It can be understood that the display device according to the embodiment of the present application can be used for narrow-frame display and has excellent display effect.

[0118] The basic principles of the present application are described above in conjunction with specific embodiments. However, it should be noted that the advantages, strengths, effects, etc. mentioned in the present application are only examples and not limitations, and it cannot be considered that these advantages, strengths, effects, etc. are required by each embodiment of the present application. In addition, the specific details disclosed above are only for the purpose of illustration and ease of understanding, not for limitation, and the above details do not limit the present application to being implemented by adopting the above specific details.

[0119] The above description has been given for the purpose of illustration and description. In addition, this description is not intended to limit the embodiments of the present application to the forms disclosed herein. Although multiple example aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, changes, additions and sub-combinations thereof.

Claims

1. A display module, characterized in that: include: A display panel, the display panel comprising a first extending portion, a bending portion, and a second extending portion connected in sequence, the first extending portion and the second extending portion being arranged opposite to each other; A first supporting structure is located at a side of the first extending portion close to the second extending portion, the first supporting structure comprises a first portion and a second portion connected to each other, the first portion is located at a side of the second portion away from the bending portion, and the second portion at least partially extends to a side of the bending portion close to the first extending portion; A first flexible layer, wherein the first flexible layer cooperates with the first supporting structure and is located at the bending portion.

2. The display module according to claim 1, characterized in that: The elastic modulus of the first flexible layer is lower than the elastic modulus of the first supporting structure; along the thickness direction of the first supporting layer, the first flexible layer is located between the second portion of the first supporting structure and the bending portion, Preferably, the elastic modulus of the first flexible layer is greater than or equal to 10 MPa and less than or equal to 200 MPa; Preferably, the material of the first flexible layer includes at least one of silicone, polyimide, polyurethane, thermoplastic polyurethane elastomer, thermoplastic polyester elastomer, styrene-based thermoplastic elastomer and polyamide-based thermoplastic elastomer.

3. The display module according to claim 1, characterized in that: The thickness of the second portion is less than or equal to the thickness of the first portion; Preferably, in a direction parallel to the first portion and pointing toward the second portion, the thickness of the second portion gradually decreases; Preferably, in a direction parallel to the first portion and pointing toward the second portion, a thickness of the first flexible layer gradually increases.

4. The display module according to claim 1, characterized in that: The second portion of the first supporting structure comprises a first surface and a second surface disposed opposite to each other, and at least a portion of the first surface is in direct contact with the first flexible layer; Preferably, the second surface comprises a curved surface; Preferably, the connecting surface between the first portion and the second portion is arranged corresponding to the bending starting point of the bending portion or the bending starting point; Preferably, in the second portion extending to the bending portion on a side close to the first extending portion, a ratio of a thickness of the second portion to a bending stress applied to the first surface at any position is a constant value.

5. The display module according to claim 1, characterized in that: Also includes: A second supporting structure is located on a side of the second extending portion close to the first extending portion, the second supporting structure comprises a third portion and a fourth portion connected to each other, the third portion is located on a side of the fourth portion away from the bending portion, and the fourth portion at least partially extends to a side of the bending portion close to the second extending portion; The thickness of the fourth portion is less than or equal to the thickness of the third portion; Preferably, in a direction parallel to the third portion and pointing toward the fourth portion, the thickness of the fourth portion gradually decreases; Preferably, the first supporting structure and the second supporting structure are spaced apart from each other; Preferably, the fourth portion of the second supporting structure comprises a third surface and a fourth surface that are arranged opposite to each other, and at least a portion of the third surface is in direct contact with the bending portion; Preferably, the fourth surface comprises a curved surface; Preferably, in the fourth portion extending to the side of the bending portion close to the second extending portion, the ratio of the thickness of the fourth portion to the bending stress on the third surface at any position is a constant value; Preferably, a connecting surface between the third portion and the fourth portion is arranged corresponding to a bending end point or a bending starting point of the bending portion.

6. The display module according to claim 5, characterized in that: Also includes: a second flexible layer, wherein the second flexible layer cooperates with the second supporting structure and is located at the bending portion; Preferably, the elastic modulus of the second flexible layer is lower than the elastic modulus of the fourth portion; Along the thickness direction of the second flexible layer, the second flexible layer is located between the fourth portion and the bending portion; Preferably, the elastic modulus of the second flexible layer is greater than or equal to 10 MPa and less than or equal to 200 MPa; Preferably, in a direction parallel to the third portion and pointing toward the fourth portion, the thickness of the second flexible layer gradually increases; Preferably, the material of the second flexible layer includes at least one of silicone, polyimide, polyurethane, thermoplastic polyurethane elastomer, thermoplastic polyester elastomer, styrene-based thermoplastic elastomer and polyamide-based thermoplastic elastomer.

7. The display module according to claim 1, characterized in that: Also includes: A cushioning structure, located between the first supporting structure and the second extending portion; Preferably, it further comprises: a first adhesive layer, located between the first supporting structure and the padding structure; Preferably, it further comprises: a second adhesive layer, located on a side of the bent portion away from the padding structure; Preferably, the second adhesive layer extends to a portion of the surface of the first supporting structure facing away from the second supporting structure, and / or the second adhesive layer extends to a portion of the surface of the second supporting structure facing away from the first supporting structure; Preferably, the bending radius of the bending portion is 0.1 mm to 0.2 mm.

8. A method for assembling a display module, characterized in that: include: A first flexible layer is disposed on the first supporting structure, wherein the elastic modulus of the first flexible layer is lower than the elastic modulus of the first supporting structure, wherein the first supporting structure comprises a first portion and a second portion connected to each other; A display panel is fixed on one side of the first supporting structure, and the display panel is bent with the cooperation of the second part of the first supporting structure and the first flexible layer to obtain a first extending part, a bending part and a second extending part connected in sequence; the first flexible layer is located between the second part and the bending part.

9. The assembly method according to claim 8, characterized in that: The step of arranging the first flexible layer on the first supporting structure comprises: arranging the first flexible layer on a side of the first supporting structure away from the padding structure; Preferably, after the step of providing the first flexible layer on the side of the first supporting structure away from the raising structure, the method further comprises: A second supporting structure is fixed on a side of the cushion structure away from the first supporting structure; the second supporting structure comprises a third part and a fourth part connected to each other, and the thickness of the fourth part is less than or equal to the thickness of the third part; Preferably, before the step of fixing the display panel on one side of the first supporting structure, the method further comprises: A second flexible layer is fixed on a side of the fourth portion facing away from the first supporting structure; Preferably, after bending the display panel, the method further comprises: applying glue on a side of the bent portion away from the padding structure.

10. A display device, characterized in that: The invention comprises the display module according to any one of claims 1 to 7, or comprises a display module assembled by the assembly method according to claim 8 or 9.

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