Display module and display device

Abstract

The invention discloses a display module and a display device.The display module comprises a display panel and a back supporting structure, the display panel comprises a display part, a bending part and a binding part, and a first identification part is arranged on the surface of the side, away from the display part, of the binding part; the back supporting structure comprises a buffer layer and a supporting layer, the buffer layer is arranged on the back side of the display part, the supporting layer is arranged on the side, away from the display part, of the buffer layer, the surface of the side, away from the buffer layer, of the supporting layer is connected with the binding part, and the supporting layer is provided with a first side edge opposite to the bent part and a first corner connected with the first side edge; the back supporting structure further comprises a second identification part, the second identification part is arranged on the side, away from the buffer layer, of the supporting layer and located at the position, close to the first corner, of the supporting layer, and in the direction where the binding part points to the first side edge, the second identification part and the first identification part are arranged in a staggered mode. And the second identification part and the first identification part are configured as grabbing alignment marks when the binding part is bent.

Description

Technical Field

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

[0002] The current back support layer structure of the flexible folding module is mostly composed of a SUS (stainless steel) layer and a BFL layer (English full name: Buffer Layer, Chinese abbreviation: buffer layer). Since it is necessary to set a mark on the panel and align it by grabbing the mark in the Bending process, it is necessary to make a groove at the position of the corresponding mark on the back support layer to avoid the mark. At the corresponding groove position, not only will the display panel be deformed by the Bending deformation, which will lead to the failure of the mark grabbing; it will also affect the waterproof gluing effect of the whole machine in this area; at the same time, the groove on the back support layer will make part of the display panel exposed, which will not only make the display panel easy to bump at this position, but also in the electrostatic test experiment, the display panel will be damaged due to direct static electricity at this position. Summary of the invention

[0003] The embodiments of the present application provide a display module and a display device, which not only achieve more accurate gripping and alignment at a binding site, but also can improve the support stability and electrostatic protection of the display panel, as well as the gluing effect of the entire device.

[0004] In a first aspect, an embodiment of the present application provides a display module, including:

[0005] The display panel comprises a display portion, a bending portion and a binding portion, wherein the binding portion is located at the back side of the display portion, the bending portion connects the display portion and the binding portion, and a first identification portion is arranged on a surface of the binding portion away from the display portion; and

[0006] A back support structure, comprising a buffer layer and a support layer, wherein the buffer layer is arranged on the back side of the display portion, the support layer is arranged on a side of the buffer layer away from the display portion, a surface of the support layer on a side away from the buffer layer is connected to the binding portion, and the support layer has a first side edge opposite to the bending portion, and a first corner connected to the first side edge;

[0007] Among them, the back support structure also includes a second identification portion, which is arranged on a side of the support layer away from the buffer layer and is located on the support layer close to the first corner. In the direction in which the binding portion points to the first side, the second identification portion and the first identification portion are staggered, and the second identification portion and the first identification portion are configured as grabbing alignment marks when the binding portion is bent.

[0008] In one embodiment, the first side edge is extended along a first direction, and the first side edge has a connecting section that exceeds the binding portion and is connected to the first corner;

[0009] The edge of the buffer layer is retracted relative to the support layer at least at a position corresponding to the first corner and the connecting section of the first side, and the retracted distance of the edge of the buffer layer is greater than 0.03 mm.

[0010] In one embodiment, the back support structure further includes a third identification portion, and the third identification portion is disposed on a side of the support layer facing the buffer layer and is located on the support layer near the first corner;

[0011] The buffer layer is provided with an avoidance notch at a position corresponding to the first corner, and the third identification portion is exposed, so as to be grasped and aligned when the back support structure is attached to the display panel.

[0012] In one embodiment, an orthographic projection of the third identification portion on the supporting layer coincides with an orthographic projection of the second identification portion on the supporting layer.

[0013] In one embodiment, a first identification groove is provided on a surface of the support layer on a side away from the buffer layer, and the first identification groove is provided close to the first corner;

[0014] A second marking groove is provided on the surface of the support layer on one side facing the buffer layer, and the orthographic projection of the second marking groove on the support layer coincides with the orthographic projection of the first marking groove on the support layer;

[0015] The buffer layer is provided with the avoidance notch, and the second marking groove is exposed;

[0016] Wherein, the second identification portion includes the first identification groove;

[0017] The third identification portion includes the second identification groove.

[0018] In one embodiment, in the thickness direction of the back support structure, the first identification groove and the second identification groove are connected.

[0019] In one embodiment, the material of the support layer includes one of stainless steel, titanium alloy, carbon fiber and ultra-clean foam.

[0020] In one embodiment, the shape of the second identification portion is set to be one of a "cross" shape, a "T" shape, an "L" shape, and a "mouth" shape; and / or,

[0021] The size of the second identification portion is set to be larger than 150*60 mm.

[0022] In one embodiment, the display module further includes:

[0023] a back plate, the back plate being arranged on the back side of the display unit, the back support structure being arranged on a side of the back plate away from the display unit; and

[0024] A heat dissipation layer, the heat dissipation layer is arranged on a side of the back support structure away from the back plate;

[0025] Wherein, the binding portion is connected to a surface of the heat dissipation layer on a side away from the back support structure.

[0026] In a second aspect, an embodiment of the present application further provides a display device, comprising the above-mentioned display module.

[0027] Beneficial effects: In the display module provided by the present application, a first identification portion is provided on a surface of a side of the binding portion of the display panel away from the display portion; a back support structure is provided on the back side of the display portion; the back support structure includes a buffer layer and a support layer, and the binding portion is connected to a surface of the support layer away from the buffer layer; a second identification portion is provided on a surface of the support layer away from the buffer layer, and the second identification portion is provided near a first corner of the support layer, and the second identification portion cooperates with the first identification portion to be grasped and aligned when the binding portion is bent; since the second identification portion is provided on the support layer, and the support layer itself has stiffness, the position of the second identification portion is more precise and less likely to be displaced, thereby making the grasping and alignment more accurate; in addition, by providing the second identification portion on the support layer, there is no need to groove the support layer and the buffer layer. On the one hand, the back support structure can cover the display portion, which can not only improve the stability of the display portion, but also avoid the exposure of the display portion and improve the electrostatic protection of the display panel; on the other hand, there is no step difference at each location on the back support structure, which will not affect the dispensing effect of the whole machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The technical solution and other beneficial effects of the present application will be made apparent by describing in detail the specific implementation methods of the present application in conjunction with the accompanying drawings.

[0029] Figure 1 A first schematic diagram of a display module provided in an embodiment of the present application;

[0030] Figure 2 A second schematic diagram of a display module provided in an embodiment of the present application;

[0031] Figure 3 A film layer diagram of a display module (bending, binding and grabbing) provided in an embodiment of the present application;

[0032] Figure 4 A film layer diagram of the back support structure (fit and grip) provided in an embodiment of the present application. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0034] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and cannot be understood as limiting the present application. In addition, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature merely means that the first feature is higher in level than the second feature or that the first feature is lower in level than the second feature, and does not indicate a direct connection relationship.

[0035] In addition, the terms "first" and "second" are used for descriptive purposes only, and the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0036] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "install", "connect" and "connect" should be understood in a broad sense without specifically limiting the connection method. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0037] The disclosure below provides many different embodiments to realize the different structures of the present application. In order to simplify the disclosure of the present application, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the various specific processes and material examples provided by the present application, but those of ordinary skill in the art can appreciate the application of other processes and / or the use of other materials.

[0038] The embodiments of the present application provide an array substrate and a display module. The display module may be a display module of a mobile phone, a computer, a tablet, a display screen, etc., and is not limited here.

[0039] In a first aspect, an embodiment of the present application provides a display module 100. Figure 1and Figure 3 The display module 100 includes a display panel 1 and a back support structure 2; the display panel 1 includes a display portion 11, a bending portion 12 and a binding portion 13, the binding portion 13 is located on the back side of the display portion 11, the bending portion 12 connects the display portion 11 and the binding portion 13, and a first identification portion 14 is provided on a surface of the binding portion 13 away from the display portion 11; the back support structure 2 includes a buffer layer 21 and a support layer 22, the buffer layer 21 is provided on the back side of the display portion 11, the support layer 22 is provided on a side of the buffer layer 21 away from the display portion 11, and a surface of the support layer 22 away from the buffer layer 21 is in contact with the binding portion 13 is connected, the supporting layer 22 has a first side 221 opposite to the bending portion 12, and a first corner 222 connecting the first side 221; wherein the back supporting structure 2 also includes a second identification portion 23, the second identification portion 23 is arranged on the side surface of the supporting layer 22 away from the buffer layer 21, and is located on the supporting layer 22 near the first corner 222, in the direction F2 where the binding portion 13 points to the first side 221, the second identification portion 23 and the first identification portion 14 are staggered, and the second identification portion 23 and the first identification portion 14 are configured as gripping alignment marks when the binding portion 13 is bent.

[0040] In the embodiment of the present application, the extension direction of the first side edge 221 is set to a first direction F1, and the direction of the binding portion 13 pointing to the first side edge 221 is set to a second direction F2.

[0041] The present application does not impose any specific restrictions on the material of the support layer 22. In the DF (Dynamic Foldable) module, the material of the support layer 22 is set to be one of stainless steel, titanium alloy and carbon fiber.

[0042] It should be noted that the buffer layer 21 (full name: buffer Layer, English abbreviation: BFL) is arranged on the back side of the display unit 11. The buffer layer 21 includes two first adhesive layers 212 and a polyimide layer 213 arranged between the two first adhesive layers 212. The display unit 11 and the support layer 22 are both adhered to the polyimide layer 213 through the first adhesive layers 212 on the corresponding sides. The material of the polyimide layer 213 is a black polyimide material.

[0043] It can be known that a buffer layer 21 and a support layer 22 are sequentially arranged on the back side of the display part 11, and the binding part 13 is located on the back side of the display part 11 and connected to the surface of the support layer 22 on the side away from the buffer layer 21; in the existing display module 100, a logo part is usually arranged on the back side of the display part 11, and since the back support structure 2 is opaque, a notch or a hole needs to be arranged on the back support structure 2 to avoid the logo part, so that the logo part can be grasped in the binding process, thereby completing the alignment action.

[0044] Furthermore, in the extension direction of the first side edge 221, the distance between the logo portion on the display portion 11 and the logo portion on the binding portion 13 is relatively small (less than 0.49 mm). In the binding process of the display panel 1, since the display portion 11 loses the support of the back support structure 2 at the position corresponding to the logo portion, the display portion 11 is very likely to be deformed at the position corresponding to the logo portion, thereby causing the logo portion on the display portion 11 to be displaced, and further making it impossible to accurately grasp the logo portion on the display portion 11 during the binding process.

[0045] At the same time, the back support structure 2 with a notch or a hole makes the display part 11 at this position exposed, which not only makes the display part 11 easy to be bumped at this position, but also makes the display part 11 damaged by ESD (full name: Electro Static Discharge, Chinese abbreviation: Electrostatic Discharge) in the electrostatic test experiment.

[0046] In the display module 100 provided in the present application, a first identification portion 14 is provided on the binding portion 13, and a second identification portion 23 is provided on the surface of the side of the support layer 22 away from the buffer layer 21, and the second identification portion 23 is provided near the first corner 222 of the support layer 22, and the second identification portion 23 cooperates with the first identification portion 14 to be grasped and aligned when the binding portion 13 is bent; since the second identification portion 23 is provided on the support layer 22, and the support layer 22 itself has stiffness, the second identification portion 2 3 is more precise and less likely to be displaced, thereby making the grasping and alignment more accurate; in addition, the second identification portion 23 is provided on the support layer 22, so there is no need to groove the support layer 22 and the buffer layer 21. On the one hand, the back support structure 2 can cover the display portion 11, which can not only improve the stability of the display portion 11, but also avoid the display portion 11 from being exposed, and improve the electrostatic protection of the display panel 1; on the other hand, there is no step difference at various places on the back support structure 2, which will not affect the dispensing effect of the whole machine.

[0047] That is, see Figure 1In the binding process of the display panel 1, the binding portion 13 is bent to the back side of the display portion 11 via the bending portion 12, that is, in the pad bending process, the CCD camera 7 is used to capture the first identification portion 14 and the second identification portion 23, and the relative position relationship between the first identification portion 14 and the second identification portion 23 is obtained. When the relative position relationship between the first identification portion 14 and the second identification portion 23 meets the preset conditions, it is determined that the binding portion 13 is bent in place, otherwise it is determined that the binding portion 13 is not bent in place.

[0048] In one embodiment, see Figure 1 and Figure 4 The first side 221 has a connecting section 221a that exceeds the binding portion 13 and is connected to the first corner 222; the edge of the buffer layer 21 is retracted relative to the support layer 22 at least at a position corresponding to the first corner 222 and the connecting section 221a of the first side 221, and the retracted distance H of the edge of the buffer layer 21 is greater than 0.03 mm.

[0049] In conventional designs, the CCD camera 7 captures from the side of the buffer layer 21 away from the supporting layer 22. Under the logic of camera capture and alignment, the fewer features captured on the first side of the supporting layer 22, the greater the probability that the center of the fit will be offset. In order to improve the process stability of the display part 11 in the binding process, the edge of the buffer layer 21 corresponding to the first side 221 is usually flush with the first side 221, or the edge corresponding to the buffer layer 21 is retracted by 0.03mm compared to the first side 221. Therefore, when the back support structure 2 and the display panel 1 are bonded, the feature capture of the supporting layer 22 by the bonding station will cause an edge offset.

[0050] The edge of the buffer layer 21 is retracted relative to the support layer 22 at least at the position corresponding to the first corner 222 and the connecting section 221a of the first side 221, and the retracted distance H of the edge of the buffer layer 21 is greater than 0.03mm; thereby, the connecting section 221a of the first side 221 and the first corner 222 on the support layer 22 are exposed, and the side of the support layer 22 can be grasped more accurately when the back support structure 2 is bonded.

[0051] In the prior art, an identification portion is provided on the display portion 11 and the binding portion 13. At this time, in the binding process of the display panel 1, the binding tolerance, that is, the position tolerance between the identification portion on the display portion 11 and the identification portion on the binding portion 13, is basically within the range of ±0.1 mm.

[0052] However, in the present application, the first identification portion 14 is arranged on the binding portion 13, and the second identification portion 23 is arranged on the supporting layer 22; there is a position tolerance of ±0.1mm between the first identification portion 14 and the second identification portion 23; the supporting layer 22 itself has an outer shape tolerance, that is, there is a position tolerance of ±0.05mm between the center position of the supporting layer 22 and its first corner 222; when the second identification portion 23 is arranged, a position tolerance of ±0.05mm will be formed between it and the first corner 222 of the supporting layer 22; at the same time, since the exposed area on the first side 221 of the supporting layer 22 is small, that is, the length L of the connecting section 221a of the first side 221 is short (L is less than 1mm), therefore, when the back support structure 2 is bonded, there will still be a problem of the bonding station offsetting the edge of the supporting layer 22, thereby making the bonding tolerance of the back support structure 2 reach ±0.1mm; therefore, it can be calculated that in the binding process of the display panel 1, the binding tolerance reaches 0.158mm.

[0053] See also Figure 2 The back support structure 2 also includes a third identification portion 24, which is arranged on the side surface of the support layer 22 facing the buffer layer 21 and is located at a position of the support layer 22 close to the first corner 222; the buffer layer 21 is provided with an avoidance notch 211 at a position corresponding to the first corner 222, and the third identification portion 24 is exposed, so as to be captured and aligned when the back support structure 2 is attached to the display panel 1.

[0054] By setting the third identification part 24 on the supporting layer 22, the buffer layer 21 is provided with an avoidance notch 211 for avoiding the third identification part 24. Therefore, when the back support structure 2 is bonded, the camera grabs from the side of the buffer layer 21 away from the supporting layer 22, and can accurately grab the third identification part 24 through the avoidance notch 211, thereby solving the problem of the edge offset of the supporting layer 22 by the bonding station; and since the avoidance notch 211 is set at the position corresponding to the first corner 222, the avoidance notch 211 and the binding part 13 are offset, thereby not affecting the support stability of the display part 11 during the bending and binding process.

[0055] At this time, the first identification portion 14 is arranged on the binding portion 13, and the second identification portion 23 is arranged on the support layer 22; there is a position tolerance of ±0.1mm between the first identification portion 14 and the second identification portion 23; there is a position tolerance of ±0.1mm between the second identification portion 23 and the third identification portion 24; therefore, it can be calculated that in the binding process of the display panel 1, the binding tolerance reaches 0.141mm. In this way, by setting the third identification portion 24, the binding tolerance of the display panel 1 can be reduced.

[0056] It can be known that the above-mentioned "the edge of the buffer layer 21 is retracted relative to the support layer 22 at least at the position corresponding to the first corner 222 and the connecting section 221a of the first side 221, and the retracted distance H of the edge of the buffer layer 21 is greater than 0.03mm" and "the back support structure 2 also includes a third identification portion 24, and the third identification portion 24 is arranged on the side surface of the support layer 22 facing the buffer layer 21, and is located at the position of the support layer 22 close to the first corner 222" two features can be set at the same time.

[0057] The present application does not impose any specific restrictions on the setting of the third identification portion 24. The setting position and setting shape of the third identification portion 24 and the second identification portion 23 may be different; the setting position and setting shape of the third identification portion 24 and the second identification portion 23 may be the same. In one embodiment of the present application, the orthographic projection of the third identification portion 24 on the support layer 22 coincides with the orthographic projection of the second identification portion 23 on the support layer 22; that is, the setting position and setting shape of the third identification portion 24 and the second identification portion 23 are the same, so that the gripping features on the support layer 22 have a unified standard, which can further improve the gripping stability.

[0058] The present application does not impose any specific restrictions on the formation of the second identification portion 23 and the third identification portion 24. The second identification portion 23 and the third identification portion 24 can be configured as a protrusion or a groove.

[0059] In one embodiment, see Figure 1 and Figure 2The first identification groove 23a is provided on the surface of the support layer 22 away from the buffer layer 21, and the first identification groove 23a is provided near the first corner 222; the second identification groove 24a is provided on the surface of the support layer 22 facing the buffer layer 21, and the orthographic projection of the second identification groove 24a on the support layer 22 coincides with the orthographic projection of the first identification groove 23a on the support layer 22; the buffer layer 21 is provided with the avoidance gap 211, and the second identification groove 24a is exposed; wherein the second identification portion 23 includes the first identification groove 23a; and the third identification portion 24 includes the second identification groove 24a. That is, the first identification groove 23a and the second identification groove 24a are formed by etching grooves on the two side surfaces of the support layer 22.

[0060] In order to further simplify the formation process of the second identification portion 23 and the third identification portion 24, in one embodiment of the present application, in the thickness direction of the support layer 22, the first identification groove 23a and the second identification groove 24a are connected; that is, etching is performed on the side surface of the support layer 22 away from the first back plate 3, and the support layer 22 is penetrated, so that identification portions can be formed simultaneously on the side surface of the support layer 22 away from the first back plate 3 and the side surface facing the first back plate 3, so that the second identification portion 23 and the third identification portion 24 can be etched in one step, thereby simplifying the formation process of the second identification portion 23 and the third identification portion 24.

[0061] The present application does not specifically limit the shapes of the second identification portion 23 and the third identification portion 24. The shape of the second identification portion 23 is set to be one of a "cross" shape, a "T" shape, an "L" shape, and a "mouth" shape; the shape of the third identification portion 24 is set to be one of a "cross" shape, a "T" shape, an "L" shape, and a "mouth" shape; the second identification portion 23 and the third identification portion 24 are set to have the same shape.

[0062] The present application does not impose any specific restrictions on the size of the second identification portion 23 and the third identification portion 24; users can select the appropriate size of the identification portion according to the specific product and site. In order to ensure that the second identification portion 23 and the third identification portion 24 can be accurately identified at the binding site and the fitting site, the second identification portion 23 and the third identification portion 24 need to be set as large as possible; in one embodiment of the present application, the size of the second identification portion 23 is set to be greater than 150*60mm; the size of the third identification portion 24 is set to be greater than 150*60mm; the size of the second identification portion 23 and the third identification portion 24 are the same size.

[0063] It should be noted that the above two technical features can be set either one or at the same time. Specifically, in one embodiment, the above two technical features are set at the same time.

[0064] Also, in this application, please refer to Figure 3 The display module 100 also includes a back plate 3 and a heat dissipation layer 4, the back plate 3 is arranged on the back side of the display unit 11, and the back support structure 2 is arranged on the side of the back plate 3 away from the display unit 11; the heat dissipation layer 4 is arranged on the side of the back support structure 2 away from the back plate 3; wherein the binding portion 13 is connected to the surface of the heat dissipation layer 4 away from the back support structure 2.

[0065] In the present application, the display module 100 further includes a polarizer 5 and a cover plate 6, wherein the polarizer 5 is arranged on the display side of the display unit 11, and the cover plate 6 is arranged on the side of the polarizer 5 away from the display unit 11. In the direction away from the display unit 11, the cover plate 6 includes a first optical adhesive layer, UTG (Ultra-Thin Glass in English, abbreviated in Chinese as ultra-thin glass), a second optical adhesive layer, and PW (full name in English: protect window, abbreviated in Chinese as cover material protective film) which are stacked; the cover plate 6 and the polarizer 5 are adhered by the first optical adhesive layer, and the material of the cover material protective film includes but is not limited to one of PET (full name in English: polyethylene glycol terephthalate, abbreviated in Chinese as polyethylene terephthalate) and CPI (full name in English: Colorless Polyimide, abbreviated in Chinese as transparent polyimide).

[0066] In a second aspect, the embodiments of the present application further provide a display device. The display device includes a display module 100. It should be noted that the display module 100 is configured as the above-mentioned display module 100, that is, the display module 100 includes all the technical features of the above-mentioned display module 100, and the display device includes all the embodiments of the above-mentioned display module 100, and also has all the technical effects of the above-mentioned embodiments, which will not be repeated here one by one.

[0067] The above is a detailed introduction to a display module and a display device provided in the embodiments of the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the technical solutions and core ideas of the present application. Ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A display module, characterized in that: include: The display panel comprises a display portion, a bending portion and a binding portion, wherein the binding portion is located at the back side of the display portion, the bending portion connects the display portion and the binding portion, and a first identification portion is arranged on a surface of the binding portion away from the display portion; and A back support structure, comprising a buffer layer and a support layer, wherein the buffer layer is arranged on the back side of the display portion, the support layer is arranged on a side of the buffer layer away from the display portion, a surface of the support layer on a side away from the buffer layer is connected to the binding portion, and the support layer has a first side edge opposite to the bending portion, and a first corner connected to the first side edge; Among them, the back support structure also includes a second identification portion, which is arranged on a side surface of the support layer away from the buffer layer and is located on the support layer close to the first corner. In the direction in which the binding portion points to the first side edge, the second identification portion and the first identification portion are staggered, and the second identification portion and the first identification portion are configured as grabbing alignment marks when the binding portion is bent.

2. The display module according to claim 1, wherein: The first side has a connecting section that exceeds the binding portion and is connected to the first corner; The edge of the buffer layer is set inwardly relative to the support layer at a position corresponding to the first corner and the connecting section, and the inward distance of the edge of the buffer layer is greater than 0.03 mm.

3. The display module according to claim 1, wherein: The back support structure further includes a third identification portion, which is disposed on a side of the support layer facing the buffer layer and is located on the support layer near the first corner; The buffer layer is provided with an avoidance notch at a position corresponding to the first corner, and the third identification portion is exposed, so as to be grasped and aligned when the back support structure is attached to the display panel.

4. The display module according to claim 3, characterized in that: The orthographic projection of the third identification portion on the supporting layer coincides with the orthographic projection of the second identification portion on the supporting layer.

5. The display module according to claim 4, characterized in that: A first identification groove is arranged on a surface of a side of the support layer away from the buffer layer, and the first identification groove is arranged close to the first corner; A second marking groove is provided on the surface of the support layer on one side facing the buffer layer, and the orthographic projection of the second marking groove on the support layer coincides with the orthographic projection of the first marking groove on the support layer; The buffer layer is provided with the avoidance notch, and the second marking groove is exposed; Wherein, the second identification portion includes the first identification groove; The third identification portion includes the second identification groove.

6. The display module according to claim 5, characterized in that: In the thickness direction of the back support structure, the first identification groove and the second identification groove are connected.

7. The display module according to claim 1, wherein: The material of the support layer includes one of stainless steel, titanium alloy and carbon fiber.

8. The display module according to claim 1, wherein: The shape of the second identification portion is set to be one of a "X" shape, a "T" shape, an "L" shape, and a "mouth" shape; and / or, The size of the second identification portion is set to be larger than 150*60 mm.

9. The display module according to claim 1, wherein: The display module also includes: a back plate, the back plate being arranged on the back side of the display unit, the back support structure being arranged on a side of the back plate away from the display unit; and A heat dissipation layer, the heat dissipation layer is arranged on a side of the back support structure away from the back plate; Wherein, the binding portion is connected to a surface of the heat dissipation layer on a side away from the back support structure.

10. A display device, characterized in that: Comprising a display module as described in any one of claims 1-9.

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