Display module and display device

Abstract

The invention provides a display module and a display device.The display module comprises a display panel and a supporting piece arranged on the back face of the display panel, and the supporting piece comprises a first stress release area corresponding to an inward bending area of the display module and a second stress release area corresponding to an outward bending area of the display module; the supporting piece is provided with a first groove and a second groove in the second stress release area, the width of the first groove is larger than that of the second groove in the bending direction of the display module, and the display module further comprises an auxiliary piece at least located in the first groove; thus, the first groove with the large width is formed, the auxiliary part is arranged in the first groove, the requirement for avoiding the middle frame of the first groove is met, meanwhile, when the supporting part is attached, the roller of the attaching device can transmit pressure to the supporting part through the auxiliary part, the attaching requirement is met, and attaching bubbles are avoided.

Description

Technical Field

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

[0002] With the development of display technology, flexible display has entered the commercialization stage. In recent years, various terminal manufacturers have successively launched folding and rolling display devices. In flexible foldable display devices, in order to ensure that the display module has good overall flatness, the display module generally uses a thinner stainless steel plate as a support member; for the display module with a water drop-shaped bending shape, there are bending sections that bend inward (bend toward the display panel) and outward (bend away from the display panel) in its bending shape. To match the bending shape of the display module, the support member is provided with a half-engraved area at the outward bending section, and a half-engraved groove is opened at the half-engraved area, and the half-engraved groove is located on the side of the support member away from the display panel, and the half-engraved groove is used to deform and release stress; however, when the whole machine is assembled, the middle frame will interfere with the half-engraved area and cause the film layer on the display panel to peel off (peeling). Summary of the invention

[0003] The present application provides a display module and a display device to alleviate the technical problem of peeling of a film layer on a display panel in an existing display device.

[0004] To solve the above problems, the technical solutions provided by this application are as follows:

[0005] The embodiment of the present application provides a display module, the display module having at least one bending area and a non-bending area located at at least one side of the bending area, the bending area including at least one inner bending area and an outer bending area located at at least one side of the inner bending area; the display module comprises:

[0006] A display panel having a light emitting surface and a back surface facing away from the light emitting surface;

[0007] A support member is disposed on the back of the display panel, the support member includes a first stress release area corresponding to the inner bending area, and a second stress release area corresponding to the outer bending area, the support member is formed with a first groove and a second groove in the second stress release area, and in the bending direction of the display module, the width of the first groove is greater than the width of the second groove;

[0008] The auxiliary member is at least located in the first groove, and in the thickness direction of the display module, the thickness of the auxiliary member is smaller than the depth of the first groove.

[0009] In the display module provided in the embodiment of the present application, the thickness of the auxiliary component accounts for 30%-60% of the depth of the first groove.

[0010] In the display module provided in the embodiment of the present application, the depth of the first groove accounts for 30%-70% of the thickness of the support member.

[0011] In the display module provided in an embodiment of the present application, in the same second stress release zone, the first groove is located between two adjacent second grooves, and the number of the second grooves located in the first groove close to the first stress release zone is less than the number of the second grooves located in the first groove away from the first stress release zone.

[0012] In the display module provided in the embodiment of the present application, the bending area includes one inner bending area and two outer bending areas, the inner bending area connects the two outer bending areas, each outer bending area is correspondingly provided with one second stress release area, and the two second stress release areas are symmetrically arranged about the first stress release area;

[0013] The first grooves in the two second stress release areas are symmetrically arranged about the first stress release area, the second grooves in the two second stress release areas are symmetrically arranged about the first stress release area, and the auxiliary parts in the two second stress release areas are symmetrically arranged about the first stress release area.

[0014] In the display module provided in the embodiment of the present application, the auxiliary component is also located in the second groove, and the material of the auxiliary component includes optical glue.

[0015] The embodiment of the present application further provides a display module, the display module having at least one bending area and a non-bending area located at at least one side of the bending area, the bending area including at least one inner bending area and an outer bending area located at at least one side of the inner bending area; the display module comprises:

[0016] A display panel having a light emitting surface and a back surface facing away from the light emitting surface;

[0017] A support member is disposed on the back of the display panel, the support member includes a first stress release area corresponding to the inner bending area, and a second stress release area corresponding to the outer bending area, the support member is formed with a first groove and a second groove in the second stress release area, and in the bending direction of the display module, the width of the first groove is greater than the width of the second groove;

[0018] A protective film, disposed on a side of the support member facing away from the display panel;

[0019] An auxiliary component is at least located in the first groove and connected to the protective film.

[0020] In the display module provided in the embodiment of the present application, the auxiliary component includes a first end connected to the protective film, and a second end away from the first end, and the adhesion force of the first end is greater than the adhesion force of the second end.

[0021] In the display module provided in the embodiment of the present application, the auxiliary part and the protective film have different colors; a barrier film is provided on the side of the protective film close to the support part, and the barrier film is provided corresponding to the inner bending area, part of the outer bending area and the area of ​​the non-bending area close to the outer bending area.

[0022] The present application also provides a display device, which includes:

[0023] Middle frame;

[0024] The display module as described in one of the above embodiments, wherein the display module is fixedly connected to the middle frame;

[0025] The middle frame is provided with a chamfer at a position corresponding to the first groove, and when the display device is in a folded state, the chamfered portion of the middle frame is received in the first groove.

[0026] The beneficial effects of the present application are as follows: in the display module and the display device provided by the present application, the display module includes a display panel and a support member arranged on the back of the display panel, the support member includes a first stress release area corresponding to the inner bending area of ​​the display module, and a second stress release area corresponding to the outer bending area of ​​the display module, the support member is formed with a first groove and a second groove in the second stress release area, and in the bending direction of the display module, the width of the first groove is greater than the width of the second groove, and the display module also includes an auxiliary member at least located in the first groove; in this way, by setting a first groove with a larger width and setting an auxiliary member in the first groove, while meeting the requirement of the first groove avoiding the middle frame, it is also possible to enable the roller of the attaching device to transfer pressure to the support member through the auxiliary member when the support member is attached, so as to meet the fitting requirements and avoid the formation of fitting bubbles. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0028] Figure 1 A partial cross-sectional schematic diagram of a comparison display module provided in an embodiment of the present application.

[0029] Figure 2 for Figure 1The schematic diagram of the partial cross section of the module after folding is shown in FIG.

[0030] Figure 3 A partial cross-sectional schematic diagram of another comparison display module provided in an embodiment of the present application.

[0031] Figure 4 for Figure 3 The schematic diagram of the partial cross section of the module after folding is shown in FIG.

[0032] Figure 5 for Figure 3 Display module and Figure 1 The diagram below shows a comparison of the risks of film peeling of modules.

[0033] Figure 6 for Figure 3 The diagram in the figure shows the bubbles that appear when the module is attached to the support.

[0034] Figure 7 A schematic diagram of a planar structure of a display module provided in an embodiment of the present application.

[0035] Figure 8 for Figure 7 Schematic diagram of the cross-sectional structure along the N-N' direction.

[0036] Fig. 9 for Figure 7 Schematic diagram of another cross-sectional structure along the N-N' line.

[0037] Fig.10 A partial cross-sectional structural schematic diagram of another display module provided in an embodiment of the present application. DETAILED DESCRIPTION

[0038] The following descriptions of the embodiments are with reference to the attached diagrams to illustrate specific embodiments that the present application can be implemented in. The directional terms mentioned in the present application, such as [up], [down], [front], [back], [left], [right], [inside], [outside], [side], etc., are only with reference to the directions of the attached drawings. Therefore, the directional terms used are used to illustrate and understand the present application, rather than to limit the present application. In the figures, units with similar structures are represented by the same reference numerals. In the accompanying drawings, the thickness of some layers and regions is exaggerated for clear understanding and ease of description. That is, the size and thickness of each component shown in the drawings are arbitrarily shown, but the present application is not limited to this.

[0039] Reference Figure 1 and Figure 2 , Figure 1 A partial cross-sectional schematic diagram of a comparative display module provided in an embodiment of the present application, Figure 2 for Figure 1 The schematic diagram of the partial cross section of the module after folding is shown in FIG. Figure 1 As shown, the display module 100' includes a display panel 10' and a support member 20' located on the back of the display panel 10', and the support member 20' is provided with a first stress release area SRA1' (i.e., a full engraved area) in the inner bending area IFA' (i.e., the inward bending section) corresponding to the display module 100', and a second stress release area SRA2' (i.e., a half engraved area) in the outer bending area OFA' (i.e., the outward bending section) corresponding to the display module 100'. The support member 20' is formed with a plurality of second grooves 202' (i.e., half engraved grooves) in the second stress release area SRA2', and the plurality of second grooves 202' are evenly arranged. The difference between the full engraved area and the half engraved area is that the support member 20' forms a hollow structure that penetrates the support member 20' in the full engraved area, and forms a groove structure that does not penetrate the support member 20' in the half engraved area.

[0040] like Figure 2 As shown, when the display module 100' is in a folded state, the middle frame 200' and the support member 20' contact in the second stress release area SRA2' to form an interference area 300, and the interference between the middle frame 200' and the support member 20' in the second stress release area SRA2' may cause peeling of the film layer on the display panel 10'.

[0041] With regard to the problem that the film layer on the display panel 10 ′ is peeled off due to the interference between the middle frame 200 ′ and the support member 20 ′ of the second stress release area SRA2 ′, the inventor of the present application has found a solution after in-depth research.

[0042] Reference Figures 3 to 6 , Figure 3 A partial cross-sectional schematic diagram of another comparative display module 100' provided in an embodiment of the present application, Figure 4 for Figure 3 The schematic diagram of a partial cross section of the module 100' after folding is shown in FIG. Figure 5 for Figure 3 The display module 100' and Figure 1 The schematic diagram showing the comparison of the film peeling risk of the module 100' is shown in FIG. Figure 6 for Figure 3 FIG. 2 shows a schematic diagram of a lamination bubble when the module 100' is laminating to the support member 20'. Figure 3 As shown, the support member 20' is formed with a first groove 201' and a second groove 202' in the second stress release area SRA2'. In the bending direction of the display module 100', the width of the first groove 201' is greater than the width of the second groove 202'. By providing the first groove 201' with a larger width, when the display module 100' is in a folded state, the part of the middle frame 200' that originally interferes with the support member 20' in the second stress release area SRA2' can be accommodated in the first groove 201', as shown in FIG. Figure 4That is, by setting a first groove 201' with a larger width to avoid the middle frame 200', the interference between the middle frame 200' and the second stress release area SRA2' can be avoided, thereby improving the problem of the film layer on the display panel 10' being peeled off due to the interference between the middle frame 200' and the support member 20' of the second stress release area SRA2'.

[0043] Furthermore, the inventors simulated Figure 3 The exemplary display module 100 ′ and Figure 1 The example of the display module 100' is used to verify the risk of film peeling. Figure 3 The exemplary display module 100' improves the effect of film peeling on the display panel 10'. Taking the electron transport (ET) layer in the light-emitting functional layer on the display panel 10' as an example, refer to Figure 5 , Figure 5 The middle curve A is Figure 3 The peeling risk curve of the electron transport layer of the exemplary display module 100 ′ is as follows: Figure 5 The middle curve B is Figure 1 The peeling risk curve of the electron transport layer of the exemplary display module 100 ′ can be seen by comparing curve A and curve B. Figure 3 The risk of peeling off the electron transport layer of the exemplary display module 100' is less than Figure 1 The risk of peeling of the electron transport layer of the exemplary display module 100' is confirmed. Figure 3 The exemplary display module 100 ′ improves the effect of film peeling on the display panel 10 ′.

[0044] However, the inventors of the present application discovered that Figure 3 Although the exemplary display module 100' can improve the problem of the film layer on the display panel 10' being peeled off due to the interference between the middle frame 200' and the support member 20' of the second stress release area SRA2', it still has the problem of lamination bubbles. Figure 6 When the support member 20' is bonded to the display panel 10', the roller 400' of the bonding device applies pressure to the protective film 40' on the support member 20' to bond the support member 20' to the display panel 10'. However, due to the design of the first groove 201' with a larger width, there is a larger area of ​​the second stress release area SRA2' without adhesion to the protective film 40' on the support member 20', and the protective film 40' has a larger stiffness, resulting in the roller 400' being unable to transfer pressure to the support member 20' at the position corresponding to the first groove 201', thereby causing the support member 20' to be falsely bonded to the display panel 10' at the position where the first groove 201' is designed, and further causing bonding bubbles 500' to appear due to the false bonding when the support member 20' is bonded.

[0045] To this end, the inventor of the present application has found a solution after further in-depth research, which can not only improve the problem of film peeling on the display panel, but also solve the problem of lamination bubbles.

[0046] Please refer to Figure 7 and Figure 8 , Figure 7 A schematic diagram of a planar structure of a display module provided in an embodiment of the present application, Figure 8 for Figure 7 Schematic diagram of the cross-sectional structure along the N-N' direction. Figure 7 , the display module 100 has at least one bending area BA and a non-bending area NBA located on at least one side of the bending area BA, and each of the bending areas BA includes at least one inner bending area IFA and an outer bending area OFA located on at least one side of the inner bending area IFA. The embodiment of the present application takes the display module 100 including one bending area BA and two non-bending areas NBA, and each of the bending areas BA including one inner bending area IFA and two outer bending areas OFA as an example to illustrate that the bending area BA is located between the two non-bending areas NBA, the inner bending area IFA is located between the two outer bending areas OFA, and each of the outer bending areas OFA is located between the inner bending area IFA and the non-bending area NBA.

[0047] The display module 100 can be bent and folded around its bending axis P and along its bending direction. Optionally, the bending direction of the display module 100 is perpendicular to the extension direction of the bending axis P. For example, the display module 100 is bent and folded along a first direction X, and the bending axis P of the display module 100 extends along a second direction Y. The first direction X is perpendicular to the second direction Y. The first direction X is the bending direction of the display module 100, and the second direction Y is the extension direction of the bending axis P of the display module 100.

[0048] Reference Figure 8 The display module 100 includes a display panel 10 and a support member 20 disposed on one side of the display panel 10. The display panel 10 has a light emitting surface and a back surface away from the light emitting surface, and the light emitting surface of the display panel 10 refers to a side of the display panel 10 used to display images. The support member 20 is disposed on the back of the display panel 10 to support the display panel 10. The display panel 10 includes a flexible display panel such as a light-emitting diode (LED) display panel, a micro light-emitting diode (Micro-LED) display panel or a sub-millimeter light-emitting diode (Mini Light-Emitting Diode, Mini-LED) display panel to achieve bending, folding, curling, etc.

[0049] The support member 20 includes a first stress release area SRA1 corresponding to the inner bending area IFA, and a second stress release area SRA2 corresponding to the outer bending area OFA. Each outer bending area OFA is provided with a corresponding second stress release area SRA2, and the two second stress release areas SRA2 are symmetrically arranged about the first stress release area SRA1. The first stress release area SRA1 and the second stress release area SRA2 are used to release the bending stress generated when the display module 100 is bent and folded.

[0050] The support member 20 is formed with a first groove 201 and a second groove 202 in the second stress release area SRA2. The support member 20 is formed with a hollow structure penetrating the support member 20 in the first stress release area SRA1, and a groove structure not penetrating the support member 20 is formed in the second stress release area SRA2, such as the first groove 201 and the second groove 202, so that the strength of the support member 20 in the first stress release area SRA1 is less than the strength of the support member 20 in the second stress release area SRA2.

[0051] In the same second stress release area SRA2, the first groove 201 is located between two adjacent second grooves 202, and the number of the second grooves 202 located in the first groove 201 close to the first stress release area SRA1 is less than the number of the second grooves 202 located in the first groove 201 far from the first stress release area SRA1. The first grooves 201 in the two second stress release areas SRA2 are symmetrically arranged with respect to the first stress release area SRA1, and the second grooves 202 in the two second stress release areas SRA2 are symmetrically arranged with respect to the first stress release area SRA1.

[0052] In the bending direction of the display module 100, the width of the first groove 201 is greater than the width of the second groove 202. Optionally, the width of the first groove 201 ranges from 120 microns to 3500 microns, such as 120 microns, 200 microns, 500 microns, 800 microns, 1200 microns, 1700 microns, 2200 microns, 2600 microns, 3000 microns, 3500 microns, etc. By setting the first groove 201 with a larger width to avoid the middle frame, the interference between the middle frame and the second stress release area SRA2 is avoided, and the problem of film peeling on the display panel 10 in the existing display device is improved.

[0053] The display module 100 also includes an auxiliary part 30, and the material of the auxiliary part 30 includes optical glue, such as UV glue. The auxiliary part 30 is at least located in the first groove 201, and the auxiliary parts 30 in the two second stress release areas SRA2 are symmetrically arranged about the first stress release area SRA1. In the thickness direction of the display module 100, the thickness of the auxiliary part 30 is less than the depth of the first groove 201, so that when the support part 20 is attached, the roller of the attachment device can transmit the pressure to the support part 20 through the auxiliary part 30 to meet the attachment requirements and avoid the appearance of attachment bubbles.

[0054] Optionally, the thickness of the auxiliary member 30 accounts for 30%-60% of the depth of the first groove 201, such as 30%, 35%, 40%, 45%, 50%, 55%, 60%, etc. When the percentage of the thickness of the auxiliary member 30 to the depth of the first groove 201 is less than 30%, the roller of the attaching device may not be able to transmit the pressure to the support member 20 through the auxiliary member 30, and thus the lamination bubble cannot be improved or the effect of improving the lamination bubble is not obvious; when the percentage of the thickness of the auxiliary member 30 to the depth of the first groove 201 is greater than 60%, the requirement that the first groove 201 avoids the middle frame may not be met.

[0055] In this way, by setting the first groove 201 with a larger width and setting the auxiliary part 30 in the first groove 201, while meeting the requirement of the first groove 201 to avoid the middle frame, when bonding the support part 20, the roller of the attaching device can transfer pressure to the support part 20 through the auxiliary part 30, so as to meet the bonding requirement and avoid the formation of bonding bubbles.

[0056] Optionally, the depth of the first groove 201 accounts for 30%-70% of the thickness of the support member 20, such as 30%, 35%, 40%, 45%, 50%, 55%, 60%, 70%, etc. The depth of the second groove 202 is equal to the depth of the first groove 201, that is, the depth of the second groove 202 accounts for 30%-70% of the thickness of the support member 20, so that the support member 20 can release the bending stress in the second stress release area SRA2 while ensuring the stiffness of the support member 20 in the second stress release area SRA2. The thickness of the support member 20 ranges from 120 microns to 150 microns, such as 120 microns, 125 microns, 130 microns, 135 microns, 140 microns, 145 microns, 150 microns, etc.

[0057] Optionally, the display module 100 further includes a cover layer 50, a back plate 60, a buffer layer 70, etc. The cover layer 50 is disposed on the light-emitting surface of the display panel 10, and the cover layer 50 may include at least one of transparent substrates such as glass, ultra-thin glass, PET, PI, etc. For example, the cover layer 50 may be formed by a three-layer structure of ultra-thin glass, PET, and PI, wherein the ultra-thin glass is located between the PET layer and the PI layer.

[0058] The back plate 60 is disposed between the display panel 10 and the support member 20. The buffer layer 70 is disposed between the back plate 60 and the support member 20. The material of the back plate 60 includes PET, etc., the material of the buffer layer 70 includes foam, PI, etc., and the material of the support member 20 includes stainless steel, titanium alloy, etc.

[0059] In one embodiment, referring to Fig. 9 , Fig. 9 for Figure 7 Another cross-sectional structure schematic diagram along the N-N' line. Figure 8 The difference of the exemplary display module 100 is that the auxiliary member 30 is also located in the second groove 202, that is, in the second stress release area SRA2, and the auxiliary member 30 is disposed in both the first groove 201 and the second groove 202. In this way, the overall stiffness of the support member 20 in the second stress release area SRA2 can be enhanced while ensuring the same stress release effect; or, while ensuring the overall stiffness of the support member 20 in the second stress release area SRA2 is the same, the width of the second groove 202 can be appropriately increased, thereby enhancing the stress release effect of the second stress release area SRA2. For other explanations, please refer to the above embodiments, which will not be repeated here.

[0060] Based on the same inventive concept, the present application embodiment also provides a display module, referring to Fig.10 , Fig.10 A partial cross-sectional structural diagram of another display module provided in an embodiment of the present application. Figure 8 and Fig. 9 The difference of the exemplary display module 100 is that Fig.10 In the exemplary display module 101 , the auxiliary component 30 is disposed on the protective film 40 of the support component 20 , and in the subsequent whole-machine assembly process, the auxiliary component 30 is torn off together with the protective film 40 .

[0061] Specifically, refer to Fig.10, the display module 101 includes a display panel 10, a support member 20, a protective film 40 and an auxiliary member 30. The display panel 10 has a light emitting surface and a back surface away from the light emitting surface. The support member 20 is arranged on the back surface of the display panel 10. The support member 20 includes a first stress release area SRA1 corresponding to the inner bending area IFA, and a second stress release area SRA2 corresponding to the outer bending area OFA. The support member 20 is formed with a first groove 201 and a second groove 202 in the second stress release area SRA2. In the bending direction of the display panel 10, the width of the first groove 201 is greater than the width of the second groove 202. The protective film 40 is arranged on the side of the support member 20 away from the display panel 10. The auxiliary member 30 is at least located in the first groove 201 and is connected to the protective film 40.

[0062] In this way, by setting a first groove 201 with a larger width on the support member 20, and setting an auxiliary member 30 at a position of the protective film 40 corresponding to the first groove 201, so that the auxiliary member 30 is located in the first groove 201, the roller of the attaching device can transfer pressure to the support member 20 through the auxiliary member 30 to meet the fitting requirements and avoid the occurrence of fitting bubbles. In addition, in the subsequent whole machine assembly process, the auxiliary member 30 is torn off together with the protective film 40, and the first groove 201 with a larger width is exposed to avoid the middle frame and prevent the middle frame from interfering with the second stress release area SRA2, thereby improving the problem of film peeling on the display panel 10.

[0063] Optionally, the auxiliary member 30 includes a first end connected to the protective film 40, and a second end facing away from the first end. The second end abuts against the support member 20 at the bottom of the first groove 201, that is, the auxiliary member 30 fills the gap between the protective film 40 and the support member 20 at the position of the first groove 201. The adhesion of the first end is greater than the adhesion of the second end, so that when the protective film 40 is torn off, the auxiliary member 30 located in the first groove 201 is torn off together with the protective film 40 and will not remain in the first groove 201.

[0064] Optionally, the auxiliary part 30 and the protective film 40 have different colors. For example, the auxiliary part 30 is formed of black or red PET, and the protective film 40 is formed of transparent PET. In this way, it is possible to quickly and directly confirm whether the auxiliary part 30 is torn off along with the protective film 40.

[0065] Optionally, a barrier film 80 is further provided on the protective film 40, and the barrier film 80 is provided corresponding to the inner bending area IFA, part of the outer bending area OFA, and the area of ​​the non-bending area NBA close to the outer bending area OFA. The barrier film 80 is used to prevent the protective film 40 from adhering to the support member 20 at certain specific positions, so as to prevent the protective film 40 from having residual adhesive residue at these specific positions.

[0066] Based on the same inventive concept, an embodiment of the present application further provides a display device, the display device comprising a middle frame and a display module, the display module being fixedly connected to the middle frame. The display module comprises the display module 100 of one of the aforementioned embodiments or the display module 101 of the aforementioned embodiment after the protective film 40 is torn off. The middle frame is provided with a chamfer at a position corresponding to the first groove 201, and when the display device is in a folded state, the chamfered portion of the middle frame is accommodated in the first groove 201.

[0067] According to the above embodiments, it can be seen that:

[0068] In a display module and a display device provided by the present application, the display module includes a display panel and a support member arranged on the back of the display panel, the support member includes a first stress release area corresponding to the inner bending area of ​​the display module, and a second stress release area corresponding to the outer bending area of ​​the display module, the support member is formed with a first groove and a second groove in the second stress release area, and in the bending direction of the display module, the width of the first groove is greater than the width of the second groove, and the display module also includes an auxiliary member at least located in the first groove; in this way, by setting a first groove with a larger width and setting an auxiliary member in the first groove, while meeting the requirement of the first groove avoiding the middle frame, it is also possible to enable the roller of the attaching device to transfer pressure to the support member through the auxiliary member when the support member is attached, so as to meet the bonding requirements and avoid the occurrence of bonding bubbles.

[0069] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0070] The embodiments of the present application are introduced in detail above. Specific examples are used in this article 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 solution and core idea 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; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A display module, characterized in that: The display module has at least one bending area and a non-bending area located at at least one side of the bending area, and the bending area includes at least one inner bending area and an outer bending area located at at least one side of the inner bending area; The display module comprises: A display panel having a light emitting surface and a back surface facing away from the light emitting surface; A support member is disposed on the back of the display panel, the support member includes a first stress release area corresponding to the inner bending area, and a second stress release area corresponding to the outer bending area, the support member is formed with a first groove and a second groove in the second stress release area, and in the bending direction of the display module, the width of the first groove is greater than the width of the second groove; The auxiliary member is at least located in the first groove, and in the thickness direction of the display module, the thickness of the auxiliary member is smaller than the depth of the first groove.

2. The display module according to claim 1, characterized in that: The thickness of the auxiliary member accounts for 30%-60% of the depth of the first groove.

3. The display module according to claim 2, characterized in that: The depth of the first groove accounts for 30%-70% of the thickness of the support member.

4. The display module according to claim 1, characterized in that: In the same second stress release area, the first groove is located between two adjacent second grooves, and the number of the second grooves located near the first stress release area is less than the number of the second grooves located far from the first stress release area.

5. The display module according to claim 4, characterized in that: The bending area includes one inner bending area and two outer bending areas, the inner bending area connects the two outer bending areas, each outer bending area is correspondingly provided with one second stress release area, and the two second stress release areas are symmetrically arranged with respect to the first stress release area; The first grooves in the two second stress release areas are symmetrically arranged about the first stress release area, the second grooves in the two second stress release areas are symmetrically arranged about the first stress release area, and the auxiliary parts in the two second stress release areas are symmetrically arranged about the first stress release area.

6. The display module according to any one of claims 1 to 5, characterized in that: The auxiliary part is also located in the second groove, and the material of the auxiliary part includes optical glue.

7. A display module, characterized in that: The display module has at least one bending area and a non-bending area located at at least one side of the bending area, and the bending area includes at least one inner bending area and an outer bending area located at at least one side of the inner bending area; The display module comprises: A display panel having a light emitting surface and a back surface facing away from the light emitting surface; A support member is disposed on the back of the display panel, the support member includes a first stress release area corresponding to the inner bending area, and a second stress release area corresponding to the outer bending area, the support member is formed with a first groove and a second groove in the second stress release area, and in the bending direction of the display module, the width of the first groove is greater than the width of the second groove; A protective film, disposed on a side of the support member facing away from the display panel; An auxiliary component is at least located in the first groove and connected to the protective film.

8. The display module according to claim 7, characterized in that: The auxiliary member includes a first end connected to the protective film and a second end facing away from the first end, and the adhesion force of the first end is greater than the adhesion force of the second end.

9. The display module according to claim 8, characterized in that: The auxiliary member and the protective film have different colors; A barrier film is arranged on one side of the protective film close to the support member, and the barrier film is arranged corresponding to the inner bending area, part of the outer bending area, and an area of ​​the non-bending area close to the outer bending area.

10. A display device, characterized in that: include: Middle frame; The display module according to any one of claims 1 to 6, wherein the display module is fixedly connected to the middle frame; The middle frame is provided with a chamfer at a position corresponding to the first groove, and when the display device is in a folded state, the chamfered portion of the middle frame is received in the first groove.

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