Display module and display device

Abstract

The application discloses a display module and a display device. The display module comprises a display panel and a back support structure. The display panel comprises a display part, a bending part and a binding part. The binding part is provided with a first identification part on the side surface away from the display part. The back support structure comprises a buffer layer and a support layer. The buffer layer is arranged on the back side of the display part. The support layer is arranged on the side of the buffer layer away from the display part. The side surface of the support layer away from the buffer layer is connected with the binding part. The support layer has a first side edge opposite to the bending part and a first corner connected with the first side edge. The back support structure further comprises a second identification part. The second identification part is arranged on the side of the support layer away from the buffer layer and is located on the position close to the first corner on the support layer. In the direction of the binding part pointing to the first side edge, the second identification part is arranged in a staggered manner with the first identification part. The second identification part and the first identification part are configured as a grabbing alignment mark when the binding part is bent.

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] The back support layer structure of the current flexible folding module is mainly composed of SUS (stainless steel) layer and BFL layer (English full name: Buffer Layer, Chinese abbreviation: buffer layer). In the Bending process, an identifier needs to be set on the panel, and the identifier is grabbed for alignment, so a slot needs to be opened on the back support layer at the position corresponding to the identifier to avoid the identifier. At the position corresponding to the slot, not only the display panel will be deformed due to the Bending deformation, which will cause the identifier grabbing to fail, but also the waterproof dispensing effect of the whole machine in this area will be affected. At the same time, the slot on the back support layer will make part of the display panel in a bare state, which not only makes the display panel prone to collision at this position, but also causes the display panel to be damaged due to direct static shock at this position in the static test experiment. SUMMARY

[0003] The display module and the display device provided by the embodiments of the present application not only make the grabbing alignment more accurate at the binding site, but also improve the support stability and static protection of the display panel and the dispensing effect of the whole machine.

[0004] In a first aspect, the embodiments of the present application provide a display module, comprising:

[0005] a display panel, comprising a display part, a bending part and a binding part, the binding part is located on the back side of the display part, the bending part connects the display part and the binding part, and the binding part is provided with a first identifier part on the surface of the side away from the display part; and

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

[0007] The back support structure further comprises a second identifier part, the second identifier part is arranged on the side of the support layer away from the buffer layer and located on the position close to the first corner on the support layer, the second identifier part is arranged in a staggered manner with the first identifier part in the direction in which the binding part points to the first side edge, and the second identifier part and the first identifier part are configured as grabbing alignment marks when the binding part is bent.

[0008] In one embodiment, the first side extends along a first direction, and the first side 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, which is provided 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 and the display panel are attached.

[0012] In one embodiment, 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.

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

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

[0015] The buffer layer is provided with the avoidance gap, 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 an embodiment, the display module further comprises:

[0023] a back plate arranged at the back side of the display part, and the back support structure is arranged at the side of the back plate away from the display part; and

[0024] a heat dissipation layer arranged at the side of the back support structure away from the back plate;

[0025] wherein the binding part is connected to the side surface of the heat dissipation layer away from the back support structure.

[0026] In a second aspect, the embodiments of the present application further provide a display device comprising the display module.

[0027] Beneficial effects: in the display module provided by the present application, the binding part of the display panel is provided with a first identification part on the side surface thereof away from the display part; a back support structure is arranged at the back side of the display part; the back support structure comprises a buffer layer and a support layer, the binding part is connected to the side surface of the support layer away from the buffer layer; the side surface of the support layer away from the buffer layer is provided with a second identification part, the second identification part is arranged close to the first corner of the support layer, and the second identification part is grabbed and aligned when the binding part is bent; since the second identification part is arranged on the support layer, the position of the second identification part is more accurate and less likely to be displaced, so that the grabbing and alignment is more accurate; in addition, the second identification part is arranged on the support layer, so that 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 part, which can not only improve the stability of the display part, but also avoid the display part from being exposed and improve the electrostatic protection of the display panel; on the other hand, there is no step difference on the back support structure, which will not affect the dispensing effect of the whole machine. BRIEF DESCRIPTION OF DRAWINGS

[0028] The technical solutions and other beneficial effects of the present application will be apparent from the following detailed description of the specific embodiments of the present application, combined with the accompanying drawings.

[0029] Figure 1 the first schematic diagram of the display module provided by the embodiments of the present application;

[0030] Figure 2 the second schematic diagram of the display module provided by the embodiments of the present application;

[0031] Figure 3 the film layer diagram of the display module (bent binding grabbing) provided by the embodiments of the present application;

[0032] Figure 4 The film layer diagram of the back support structure (adhesion grabbing) provided by the embodiment of the present application is shown. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present application will be clearly and completely described in combination 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 the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall 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" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and cannot be understood as limiting the present application. In addition, unless otherwise explicitly specified and limited, the "upper" or "lower" of the first feature relative to the second feature only means that the first feature is higher in height than the second feature or the first feature is lower in height than the second feature, and does not mean a direct connection relationship.

[0035] In addition, the terms "first" and "second" are only for the purpose of description, and the features limited by "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified and limited.

[0036] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, and the connection mode is not limited, and those skilled in the art can understand the specific meaning of the above terms in the present application according to the specific situation.

[0037] The following disclosure provides many different embodiments for implementing different structures of the present application. In order to simplify the disclosure of the present application, the components 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 present application provides various specific examples of processes and materials, but those skilled in the art can realize the application of other processes and / or the use of other materials.

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

[0039] In a first aspect, the embodiment of the present application provides a display module 100. Please refer to 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 part 11, a bending part 12, and a binding part 13. The binding part 13 is located on the back side of the display part 11. The bending part 12 connects the display part 11 and the binding part 13. The binding part 13 is provided with a first identification part 14 on the side surface away from the display part 11. The back support structure 2 includes a buffer layer 21 and a support layer 22. The buffer layer 21 is arranged on the back side of the display part 11. The support layer 22 is arranged on the side of the buffer layer 21 away from the display part 11. The side surface of the support layer 22 away from the buffer layer 21 is connected with the binding part 13. The support layer 22 has a first side edge 221 opposite to the bending part 12, and a first corner 222 connecting the first side edge 221. The back support structure 2 further includes a second identification part 23. The second identification part 23 is arranged on the side surface of the support layer 22 away from the buffer layer 21, and is located on the support layer 22 close to the first corner 222. In the direction F2 in which the binding part 13 points to the first side edge 221, the second identification part 23 is arranged in a staggered manner with the first identification part 14. The second identification part 23 and the first identification part 14 are configured as a grasping alignment mark when the binding part 13 is bent.

[0040] In the embodiments of the present application, the extension direction of the first side edge 221 is set as a first direction F1, and the direction in which the binding part 13 points to the first side edge 221 is set as a second direction F2.

[0041] The material of the support layer 22 is not specifically limited in the present application. In a DF (English full name: Dynamic Foldable, Chinese abbreviation: dynamic foldable) module, the material of the support layer 22 is set as one of stainless steel, titanium alloy, and carbon fiber.

[0042] It should be noted that the buffer layer 21 (English full name: buffer layer, English abbreviation: BFL) is arranged on the back side of the display part 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 part 11 and the support layer 22 are adhered by the first adhesive layer 212 and the polyimide layer 213 on the corresponding side. The material of the polyimide layer 213 is black polyimide material.

[0043] It can be known that the back side of the display part 11 is sequentially provided with a buffer layer 21 and a support layer 22, the binding part 13 is located on the back side of the display part 11 and is connected to the side surface of the support layer 22 away from the buffer layer 21; in the existing display module 100, generally, an identification part is arranged on the back side of the display part 11, since the back support structure 2 is not light-transmitting, it is necessary to arrange a notch or a hole on the back support structure 2 to avoid the identification part, so that the identification part can be grabbed in the binding process, thereby completing the alignment action.

[0044] And in the extension direction of the first side edge 221, the distance between the identification part on the display part 11 and the identification part on the binding part 13 is small (less than 0.49 mm), in the binding process of the display panel 1, since the display part 11 loses the support of the back support structure 2 at the position of the corresponding identification part, the display part 11 is prone to deformation at the position of the corresponding identification part, thereby causing the displacement of the identification part on the display part 11, and further causing the identification part on the display part 11 to be unable to be accurately grabbed in the binding process.

[0045] At the same time, the back support structure 2 provided with the notch or the hole makes the display part 11 at the position in a bare state, not only makes the display part 11 prone to knocking at the position, but also causes the display part 11 to be damaged by ESD (English full name: Electro Static Discharge, Chinese abbreviation: electrostatic discharge) in the electrostatic test experiment.

[0046] And in the display module 100 provided by the application, the binding part 13 is provided with a first identification part 14, the side surface of the support layer 22 away from the buffer layer 21 is provided with a second identification part 23, the second identification part 23 is arranged close to the first corner 222 of the support layer 22, and the second identification part 23 is grabbed and aligned when the binding part 13 is bent in cooperation with the first identification part 14; since the second identification part 23 is arranged on the support layer 22, and the support layer 22 itself has stiffness, the position of the second identification part 23 is more accurate and is not prone to displacement, thereby making the grabbing and alignment more accurate; in addition, the arrangement of the second identification part 23 on the support layer 22 also does not 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 part 11, not only can improve the stability of the display part 11, but also can avoid the display part 11 from being exposed and improve the electrostatic protection of the display panel 1; on the other hand, there is no step difference on the back support structure 2, which will not affect the dispensing effect of the whole machine.

[0047] That is, please refer to Figure 1In the binding process of the display panel 1, the binding part 13 is bent to the back side of the display part 11 through the bending part 12, that is, in the pad bending process, the first identification part 14 and the second identification part 23 are captured by the CCD camera 7, the relative position relationship of the first identification part 14 and the second identification part 23 is obtained, and when the relative position relationship of the first identification part 14 and the second identification part 23 meets the preset condition, it is determined that the binding part 13 is bent in place, otherwise it is determined that the binding part 13 is not bent in place.

[0048] In an embodiment, referring to Figure 1 and Figure 4 , the first side edge 221 has a connecting segment 221a beyond the binding part 13 and connected with the first corner 222; the edge of the buffer layer 21 is arranged to be inwardly recessed relative to the support layer 22 at least at positions corresponding to the first corner 222 and the connecting segment 221a of the first side edge 221, and the inwardly recessed distance H of the edge of the buffer layer 21 is greater than 0.03 mm.

[0049] In a conventional design, the CCD camera 7 captures from the side of the buffer layer 21 away from the support layer 22, and under the logic of camera capture alignment, the less features of the first side edge of the support layer 22 are captured, the greater the probability that the fitted center deviates. In order to improve the process stability of the display part 11 in the binding process, generally, the edge of the buffer layer 21 corresponding to the first side edge 221 is arranged to be flush with the first side edge 221, or the edge of the buffer layer 21 corresponding to the first side edge 221 is inwardly recessed by 0.03 mm; so that when the back support structure 2 is attached to the display panel 1, the feature capture of the support layer 22 by the attachment station will produce edge capture deviation.

[0050] The edge of the buffer layer 21 is arranged to be inwardly recessed relative to the support layer 22 at least at positions corresponding to the first corner 222 and the connecting segment 221a of the first side edge 221, and the inwardly recessed distance H of the edge of the buffer layer 21 is greater than 0.03 mm; so that the connecting segment 221a of the first side edge 221 and the first corner 222 on the support layer 22 are exposed, and the capture of the side edge of the support layer 22 is more accurate when the back support structure 2 is attached.

[0051] And in the prior art, identification parts are arranged on the display part 11 and the binding part 13, and at this time, in the binding process of the display panel 1, the binding tolerance, that is, the position tolerance between the identification part on the display part 11 and the identification part on the binding part 13, is basically within ±0.1 mm.

[0052] But in the present application, the first identification part 14 is arranged on the binding part 13, and the second identification part 23 is arranged on the support layer 22; the first identification part 14 and the second identification part 23 have a position tolerance of ±0.1mm; the support layer 22 itself has an outline tolerance, that is, the center position of the support layer 22 and the first corner 222 thereof have a position tolerance of ±0.05mm; when the second identification part 23 is arranged, a position tolerance of ±0.05mm is formed between the second identification part 23 and the first corner 222 of the support layer 22; at the same time, since the exposed area on the first side edge 221 of the support layer 22 is small, that is, the length L of the connecting section 221a of the first side edge 221 is short (L is less than 1mm), when the back support structure 2 is attached, the problem of edge grabbing deviation of the support layer 22 by the attaching station still exists, so that the attachment tolerance of the back support structure 2 reaches ±0.1mm; thus, it can be calculated that in the binding process of the display panel 1, the binding tolerance reaches 0.158mm.

[0053] Please refer to Figure 2 The back support structure 2 further comprises a third identification part 24, which 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; the buffer layer 21 is provided with an avoiding notch 211 at the position corresponding to the first corner 222, and the third identification part 24 is exposed, so as to be grabbed for alignment when the back support structure 2 is attached to the display panel 1.

[0054] By arranging the third identification part 24 on the support layer 22 and arranging the avoiding notch 211 of the buffer layer 21 to avoid the third identification part 24, when the back support structure 2 is attached, the camera grabs from the side of the buffer layer 21 away from the support layer 22, and can accurately grab the third identification part 24 through the avoiding notch 211, so as to solve the problem of edge grabbing deviation of the support layer 22 by the attaching station; and since the avoiding notch 211 is arranged at the position corresponding to the first corner 222, the avoiding notch 211 is arranged in a staggered manner with the binding part 13, so as not to affect the support stability of the display part 11 in the bending and binding process.

[0055] At this time, the first identification part 14 is arranged on the binding part 13, and the second identification part 23 is arranged on the support layer 22; the first identification part 14 and the second identification part 23 have a position tolerance of ±0.1mm; the second identification part 23 and the third identification part 24 have a position tolerance of ±0.1mm; thus, it can be calculated that the binding tolerance of the display panel 1 reaches 0.141mm in the binding process. In this way, the third identification part 24 can be arranged to reduce the binding tolerance of the display panel 1.

[0056] It can be known that the two features of "the edge of the buffer layer 21 is arranged to be inwardly recessed relative to the support layer 22 at least at positions corresponding to the first corner 222 and the connecting segment 221a of the first side edge 221, and the inwardly recessed distance H of the edge of the buffer layer 21 is greater than 0.03mm" and "the back support structure 2 further comprises a third identification part 24 arranged on one side surface of the support layer 22 facing the buffer layer 21 and located close to the first corner 222 of the support layer 22" can be arranged simultaneously.

[0057] The present application does not make specific limitations on the arrangement of the third identification part 24. The arrangement position and shape of the third identification part 24 can be different from those of the second identification part 23; or the arrangement position and shape of the third identification part 24 can be the same as those of the second identification part 23. In an embodiment of the present application, the orthographic projection of the third identification part 24 on the support layer 22 coincides with the orthographic projection of the second identification part 23 on the support layer 22; that is, the arrangement position and shape of the third identification part 24 are the same as those of the second identification part 23, 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 make specific limitations on the forming method of the second identification part 23 and the third identification part 24. The second identification part 23 and the third identification part 24 can be arranged as protrusions or recesses.

[0059] In an embodiment, please refer to Figure 1 and Figure 2The support layer 22 is provided with a first identification groove 23a on a side of the surface facing away from the buffer layer 21, and the first identification groove 23a is located near the first corner 222. The support layer 22 is provided with a second identification groove 24a on a side of the surface 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 notch 211, and the second identification groove 24a is exposed. The second identification portion 23 includes the first identification groove 23a, and the third identification portion 24 includes the second identification groove 24a. In other words, the first identification groove 23a and the second identification groove 24a are formed by etching grooves on both sides 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] This application does not impose any specific restrictions on the shapes of the second identification portion 23 and the third identification portion 24. The second identification portion 23 may be shaped like a cross, a T, an L, or a square; the third identification portion 24 may be shaped like a cross, a T, an L, or a square; and the second identification portion 23 and the third identification portion 24 may have the same shape.

[0062] This 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 based on the specific product and site. 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 as large as possible. In one embodiment of this application, the size of the second identification portion 23 is set to be larger than 150*60mm; the size of the third identification portion 24 is set to be larger than 150*60mm; 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 separately or simultaneously. Specifically, in an embodiment, the above two technical features are set simultaneously.

[0064] In the present application, please refer to Figure 3 The display module 100 further comprises a back plate 3 and a heat dissipation layer 4. The back plate 3 is arranged on the back side of the display part 11, and the back support structure 2 is arranged on the side of the back plate 3 away from the display part 11. The heat dissipation layer 4 is arranged on the side of the back support structure 2 away from the back plate 3. The binding part 13 is connected to the surface of the side of the heat dissipation layer 4 away from the back support structure 2.

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

[0066] In a second aspect, the embodiments of the present application also provide a display device. The display device comprises a display module 100. It should be noted that the display module 100 is set as the above-mentioned display module 100, that is, the display module 100 contains all the technical features of the above-mentioned display module 100. The display device contains all the embodiments of the above-mentioned display module 100, and has all the technical effects of the above-mentioned embodiments. Here, it is not necessary to repeat them one by one.

[0067] The above has carried out the detailed introduction to the display module and the display device provided by the embodiment of the application, the principle and the implementation mode of the application are described in the text by applying specific examples, the above embodiment is only used for helping understanding the technical scheme of the application and its core idea; the ordinary skilled in the art should understand that: it can still modify the technical scheme recorded by the foregoing each embodiment, or equivalent replacement is carried out to part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical scheme deviate from the scope of the technical scheme of the embodiments of the application.

Claims

1. A display module, characterized in that: include: The display panel includes a display portion, a bending portion, and a binding portion, wherein the binding portion is located on the back side of the display portion, the bending portion connects the display portion and the binding portion, and a first identification portion is provided 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 disposed on the back side of the display portion, and the support layer is disposed on a side of the buffer layer away from the display portion, a surface of the support layer away from the buffer layer being connected to the binding portion, and the support layer having a first side opposite to the bent portion, and a first corner connected to the first side; In which, 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 extending beyond the binding portion and connected to the first corner; The edge of the buffer layer is retracted relative to the support layer at a position corresponding to the first corner and the connecting section, and the retracted 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 arranged 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 and the display panel are attached.

4. The display module according to claim 3, wherein: 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, wherein: A first identification groove is provided on a surface of the support layer away from the buffer layer, and the first identification groove is provided near the first corner; A second marking groove is provided on a surface of the support layer facing the buffer layer, and an orthographic projection of the second marking groove on the support layer coincides with an orthographic projection of the first marking groove on the support layer; The buffer layer is provided with the avoidance gap, 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, wherein: 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 "cross" 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 further includes: a back plate, the back plate being arranged on the back side of the display portion, the back support structure being arranged on a side of the back plate away from the display portion; and a heat dissipation layer, the heat dissipation layer being 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 that is away from the back support structure.

10. A display device, characterized in that: The invention comprises a display module as described in any one of claims 1 to 9.

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