Display module and display device

Abstract

The invention provides a display panel and a display device. The display panel comprises a first display area, a second display area surrounding the first display area and a non-display area surrounding at least part of the second display area, the non-display area comprises a lower frame area, the lower frame area is provided with a bending area, the display panel further comprises a substrate, a driving layer is arranged on the substrate, the driving layer comprises a first metal wire located in the non-display area, and the first metal wire is arranged between the first metal wire and the second metal wire. The light-emitting layer is stacked on the driving layer and the touch control layer, the light-emitting layer is arranged on the light-emitting layer and comprises a first touch control wiring layer, the first touch control wiring layer comprises a first touch control wiring located in a non-display area, the first touch control wiring is electrically connected with a first metal wiring through a connecting hole, and the first metal wiring is electrically connected with a second metal wiring through a connecting hole. The included angle between the side, close to the bending area, of the connecting hole and the boundary line of the bending area is larger than 10 degrees. In this way, stress concentration at the frame / edge of the connecting hole is avoided in the bending state, the stripping problem between the first touch wire and the first metal wire is solved, and the defect of touch failure is improved.

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] Among the current OLED display panels, high screen-to-body ratio display panels are becoming the mainstream. For display panels, high screen-to-body ratio means that the width of the outer border of the display area is further compressed, and the corresponding width of the lower border is getting narrower and narrower. Due to limited wiring and packaging requirements, the touch wiring of the touch layer needs to be electrically connected to the metal wiring of the drive layer through the touch wiring hole (TP wiring hole) in the lower border area. As the size of the lower border area is compressed, there is a problem of peeling of the touch wiring of the touch layer and the metal wiring of the drive layer, causing touch failure.

[0003] To this end, existing display panels need to be improved. Summary of the invention

[0004] In view of this, the purpose of the present application is to provide a display module and a display device, aiming to improve the process performance of a display panel.

[0005] To achieve the above objectives, this application adopts the following technical solutions.

[0006] A display module comprises: a display area, a non-display area at least partially surrounding the display area, the non-display area comprises a lower frame area, the lower frame area has a bending area, and further comprises:

[0007] substrate;

[0008] A driving layer, the driving layer is disposed on the substrate, and the driving layer includes a first metal wiring located in the non-display area;

[0009] A light-emitting layer, the light-emitting layer being arranged on a side of the driving layer away from the substrate;

[0010] A touch layer, the touch layer is arranged on a side of the light-emitting layer away from the substrate, and includes a first touch wiring layer, the first touch wiring layer includes a first touch wiring located in a non-display area, the first touch wiring is electrically connected to the first metal wiring through a connection hole, and the angle between the extension line of the side of the connection hole close to the bending area and the boundary line of the bending area close to the display area is greater than 10°. Through such an arrangement, stress concentration at the frame / edge of the connection hole located in the lower frame area is avoided in a bent state, the peeling problem between the first touch wiring and the first metal wiring of the driving layer located in the non-display area is improved, and the problem of touch failure is improved.

[0011] In a preferred embodiment, the display module further comprises an encapsulation layer, wherein the encapsulation layer is disposed on a side of the light-emitting layer away from the substrate;

[0012] The encapsulation layer includes a first sub-encapsulation layer and a second sub-encapsulation layer stacked in sequence and extending to the lower frame area. The distances from the boundaries of the first sub-encapsulation layer and the second sub-encapsulation layer to the connection hole are different.

[0013] In a preferred embodiment, it also includes an insulating layer, which is arranged on a side of the light-emitting layer away from the substrate and extends to the lower frame area, and the portion of the insulating layer located in the lower frame area has at least one connecting hole.

[0014] In a preferred embodiment, the touch layer includes an insulating layer, which is disposed on the side of the packaging layer away from the substrate and extends to the lower frame area, and the insulating layer has at least one connecting hole in the lower frame area.

[0015] In a preferred embodiment, the first touch wiring is electrically connected to the first metal wiring through at least one of the connection holes;

[0016] The first metal wiring includes a lap portion, the connection hole exposes the lap portion, and the first touch wiring is electrically connected to the lap portion.

[0017] In a preferred embodiment, the first touch wiring is electrically connected to the first metal wiring through a plurality of the connection holes, and the sides of the plurality of connection holes close to the bending area are parallel to each other;

[0018] Preferably, the first metal wiring includes a lapped portion, and the first touch wiring is electrically connected to the lapped portion of the first metal wiring through the plurality of connection holes;

[0019] Preferably, the overlapping parts corresponding to the multiple connection holes are connected as one.

[0020] In a preferred embodiment, an optical adhesive layer is stacked on a side of the first touch-control wiring away from the substrate, and a cover plate is disposed on a side of the optical adhesive layer away from the substrate.

[0021] In a preferred embodiment, the minimum distance from the connecting hole to the boundary line of the bending area is between 10 and 20 μm;

[0022] Preferably, the connection hole is square;

[0023] Preferably, the connection hole is square, and the side length of the connection hole is between 2 and 50 μm;

[0024] Preferably, the connection hole is rectangular, and the side length of the connection hole is between 10 and 20 μm.

[0025] In a preferred embodiment, the angle between the extension line of the side of the connecting hole close to the bending area and the boundary line of the bending area is between 10 and 50 degrees;

[0026] Preferably, the angle between the extension line of the side of the connecting hole close to the bending area and the boundary line of the bending area is between 15 and 45 degrees;

[0027] Preferably, an angle between an extension line of a side of the connecting hole close to the bending zone and a boundary line of the bending zone is between 20° and 40°.

[0028] In a preferred embodiment, the display area includes a first display area and a second display area at least partially surrounding the first display area, and the second display area is located between the first display area and the non-display area;

[0029] The curvature of the first display area is different from the curvature of the second display area;

[0030] Preferably, the surface of the portion of the substrate located in the first display area is a plane, and the surface of the portion of the substrate located in the second display area is a curved surface.

[0031] Based on the same inventive concept, the present application proposes a display device, which includes the above-mentioned display panel.

[0032] Compared with the prior art, the display module of the present application optimizes the structure of the connecting hole located in the lower frame area of ​​its touch layer. In the bent state, the connecting hole is configured so that its taper is not parallel to the bending of the display panel (screen body), that is, the edge of the connecting hole close to the bending area (that is, the plane where the side wall of the connecting hole is located) is not parallel to the boundary line of the bending area (also called the PB line) (the angle is greater than 10°). Compared with the current TP connecting hole, the edge of the connecting hole close to the bending area is parallel to the boundary line of the bending area close to the display area. This is equivalent to rotating the connecting hole by a certain angle so that the connecting hole and the display panel are not bent in parallel. This is beneficial to reducing stress concentration at the frame / edge of the connecting hole in the bent state, improving the influence of stress on the frame of the connecting hole under the bent structure, and improving the peeling problem between the first touch wiring and the first metal wiring of the driving layer located in the non-display area, thereby improving / avoiding the touch failure caused by this. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the present application or related technologies, the drawings required for use in the embodiments or related technical descriptions are briefly introduced below. Obviously, the drawings described below are only embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0034] Figure 1 This is a schematic diagram of the main structure of a display module according to an embodiment of the present application;

[0035] Figure 2 for Figure 1 A schematic top view of a display module according to an embodiment;

[0036] Figure 3 for Figure 1 Schematic diagram of the cross section at a;

[0037] Figure 4 A schematic diagram of the distance between the connection hole and the side boundary line of the bending area close to the display area in the embodiment of the present application;

[0038] Figure 5 A schematic diagram of the distance between the connection hole and the boundary line of the bending area close to the display area in another embodiment;

[0039] Figure 6 for Figure 5 A cross-sectional schematic diagram of a first touch control trace electrically connected to a first metal wire through a connecting hole. DETAILED DESCRIPTION

[0040] In order to make the objectives, technical solutions and advantages of the present application more clearly understood, the present application is further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.

[0041] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present application should be the usual meanings understood by people with ordinary skills in the field to which the present application belongs. The "first", "second" and similar words used in the embodiments of the present application do not represent any order, quantity or importance, but are only used to distinguish different components. "Including" or "comprising" and similar words mean that the elements or objects appearing in front of the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0042] With the advancement of technology and the improvement of consumer aesthetics, smart devices are required to be lighter and thinner, and the demand for a high screen-to-body ratio is getting higher and higher. For display panels, a high screen-to-body ratio further compresses the width of the outer border of the display area, and correspondingly the width of the lower border becomes narrower and narrower.

[0043] In practice, the lower frame area is subjected to FIAA technology (Fanout In AA) and then bent to the back of the display panel through a padbending process to shorten the width of the lower frame. Under this structure, the curved screen (or when the frame around the display area has a certain curvature) has a certain defect of touch layer failure.

[0044] The applicant conducted further research on the defect and found that the display substrate (panel) of the curved screen has a certain curvature. The touch wiring layer of the touch layer in the lower frame area is electrically connected (overlapped) to the metal of the drive layer through a connecting hole (also called a TP switching hole or a switching hole). The position of the connecting hole is relatively close to the packaging layer (CVD). When CVD is used for coating, the thickness at the connecting hole increases due to the influence of the CVD shadow. The touch wiring (TP M2) at the location of the connecting hole is affected by the normal tensile stress. During the subsequent reliability test, the SiON at the shadow position absorbs water and expands, resulting in peeling (peeling) between the touch wiring and the array metal at the TP switching hole position, causing touch failure.

[0045] Based on this discovery, the applicant has improved the touch wiring and the connection holes to improve the peeling problem between the touch wiring and the array metal, that is, to avoid the problem of touch failure.

[0046] To this end, a display module is proposed, which includes a display area and a non-display area at least partially surrounding the display area, the non-display area includes a lower frame area, the lower frame area has a bending area (which can be bent to the back of the display panel later, and the starting point of the bending is the boundary line of the bending area), and also includes:

[0047] substrate;

[0048] A driving layer, the driving layer is disposed on the substrate, and the driving layer includes a first metal wiring located in a non-display area;

[0049] A light-emitting layer, which is disposed on a side of the driving layer away from the substrate;

[0050] A touch layer is provided on a side of the light-emitting layer away from the substrate, and includes a first touch wiring layer, the first touch wiring layer includes a first touch wiring located in a non-display area, the first touch wiring is electrically connected to a first metal wiring through a connection hole, and an angle between an extension line of the side of the connection hole close to the bending area and a boundary line of the bending area close to the display area is greater than 10°. This reduces stress concentration at the side / frame / edge of the connection hole in a bent state, improves the influence of stress on the frame of the connection hole under a bent structure, and improves the peeling problem between the first touch wiring and the first metal wiring of the driving layer located in the non-display area.

[0051] Next, the display module and display device proposed in the present application are described in conjunction with the accompanying drawings.

[0052] like Figure 1 Shown is the main view structure of a display module according to an embodiment of the present application.

[0053] The display module includes a display area and a non-display area surrounding at least part of the display area, the non-display area includes a lower frame area 130, the lower frame area 130 has a bending area 131, and the bending area 131 can be bent to the back of the display area along a boundary line 131a of the bending area close to the display area side (the boundary line 131a is the starting position of the bending area 131) in a subsequent process.

[0054] Specifically, the display area includes a first display area 110 and a second display area 120 at least partially surrounding the first display area 110, and the second display area 120 is located between the first display area 110 and the non-display area. Preferably, in a subsequent process, the non-display area includes a lower frame area 130, which is bent along a boundary line 131a of the bending area close to the display area side to the back of the second display area 120 (or the back of the second display area 120 and the first display area 110). The boundary line 131a is the starting position of the bending of the bending area 131.

[0055] The display module includes a four-curved screen. Taking the four-curved screen as an example, the middle area of ​​the display module is a plane (i.e., the first display area 110 is a plane), and the border area of ​​the display screen is a curved surface (i.e., the second display area 120 (also called the curved display area) has a certain curvature). The surface of the substrate located in the first display area 110 is a plane, and the surface of the substrate located in the second display area 120 is a curved surface. In the thickness direction, the distance H between the edge of the second display area (curved display area) 120 away from the first display area 110 and the plane where the back surface of the first display area 110 is located is (see Figure 2 ) is greater than or equal to 0.3 mm, (making the curved display area bend deeper). For example, the distance may be 0.3 mm, 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm or any value greater than 0.5 mm.

[0056] The display module also includes:

[0057] The substrate is a flexible substrate, and its material can be selected from polyimide (PI), polyethylene naphthalate (PEN) or polyethylene terephthalate (PET), etc. The material can also be a mixed material of the above materials, or the substrate can be a hard substrate, and its material can be selected from glass.

[0058] A driving layer is provided on the substrate, the driving layer includes a pixel driving circuit located in the display area, and the driving layer also includes a first metal wiring located in the non-display area. The pixel driving circuit may include a plurality of transistors TFT, capacitors, etc., for example, formed in various forms such as 2T1C (i.e., 2 transistors (TFT) and 1 capacitor (C)), 3T1C or 7T1C. The pixel driving circuit is electrically connected to the light-emitting unit to control the switching state and light brightness of the light-emitting unit.

[0059] The light-emitting layer is stacked on the side of the driving layer away from the substrate, and includes a plurality of light-emitting units, each of which is electrically connected to a matching pixel driving circuit. The light-emitting layer may further include one or more of a hole injection layer, a hole transport layer, an organic light-emitting layer, an electron transport layer, an electron injection layer, etc., and may further include one or more of a hole blocking layer, an electron blocking layer, etc.

[0060] The encapsulation layer is stacked on the light-emitting layer to prevent water and oxygen from invading. The encapsulation layer may include a stacked first sub-encapsulation layer and a second sub-encapsulation layer. For example, the first sub-encapsulation layer is made of inorganic material, and the second sub-encapsulation layer is made of organic material.

[0061] The touch layer is stacked on the side of the encapsulation layer away from the light-emitting layer. The touch layer is also called a TP film layer. It can be a self-capacitive TP film layer or a mutual-capacitive TP film layer. The TP film layer may include a second touch wiring layer, an insulating layer and a first touch wiring layer. The second touch wiring layer includes a plurality of first touch signal units located in the display area and a second touch wiring located in the non-display area.

[0062] The first touch wiring layer includes a plurality of second touch signal units located in the display area and a first touch wiring located in the non-display area. The insulating layer is used to isolate the second touch wiring layer from the first touch wiring layer. The insulating layer extends to the lower frame area (preferably, the insulating layer extends to the boundary line (also called PB line, padbending) of the lower frame area close to the bending area, and a connection hole is provided in the insulating layer in the lower frame area, and the first touch wiring of the first touch wiring layer is electrically connected / lapped to the first metal wiring through the connection hole.

[0063] In one embodiment, see Figure 1 Combined with Figure 3 and Figure 4 ,

[0064] Preferably, the first touch control trace 171 extends to the lower frame area 130 and is connected to the first metal trace 142 of the driving layer (the first metal trace 142 is M5 for LTPO type drive, or M4 metal for LTPS type drive) through the connection hole 161 of the insulating layer 160. Preferably, the first touch control trace 171 covers a portion of the surface of the insulating layer, the connection hole (also called the line change hole) 161, and the side wall 161a of the connection hole 161 is electrically connected to the first metal trace 142.

[0065] The first metal trace 142 is disposed on the flat layer 141, and the flat layer 141 is disposed on the substrate 140. In one embodiment, a second metal trace (not shown) is further disposed between the flat layer 141 and the substrate 140. The connection hole is in a square shape, such as a square, and its side length is between 2-50 μm (such as a side length of the connection hole is 10 μm), or, for example, the connection hole is in a rectangular shape, and its side length is between 10 and 20 μm, such as a side length of a rectangular connection hole is 10*20 μm. A bending area is provided on the side of the connection hole away from the display area, and the distance from the connection hole 161 to the boundary line (also called PB line, pad bending) on ​​the display area side close to the bending area is between 10-20 μm. An optical glue (such as OC organic glue) layer 180 is stacked on the first touch trace 171. The cover plate can be disposed on the side of the optical glue layer 180 away from the first metal trace 142. During implementation, after the packaging layer is prepared, a second touch routing layer is set on the packaging layer and patterned to obtain a second touch routing and a second touch signal unit, and then an insulating layer 160 is set thereon, and the insulating layer 160 extends to near the bending area, and a connecting hole (in the bending area) is set (exposing the first metal routing), and a first touch routing layer is deposited on the insulating layer 160 and patterned to obtain a first touch routing and a first touch signal unit, and the first touch routing is overlapped to the first metal routing through the connecting hole.

[0066] The connection hole 161 is configured so that the angle α between the extension line of the side close to the bending area (the plane of the side wall close to the bending area) and the boundary line of the bending area close to the display area (also called PB line) is greater than 10°. The angle α can be the angle between the extension line of the side of the connection hole 161 close to the bending area before the bending area is bent and the boundary line of the bending area close to the display area. Preferably, the angle α is between 10 and 50° (such as 10°, 15°, 20°, 25°, 30°, 35°, 40°, 45°, 50°), preferably, α is between 15-45° (such as 15°, 20°, 25°, 30°, 35°, 40°, 45°), preferably, in a planar state, the angle α is between 20-40°. Through such a design, the connection hole is equivalent to rotating a certain angle (the current TP line change hole and the side of the connection hole close to the bending area are parallel to the boundary line of the bending area. Taking the connection hole in a square shape as an example, the four sides of the current TP line change hole are either parallel to the boundary line of the bending area close to the display area (approximately parallel), or perpendicular to the boundary line of the bending area close to the display area (approximately perpendicular) The connection hole of the present application is equivalent to being rotated at a certain angle, so that when in a bent state, the connection hole is not in a parallel direction with the display panel bending (taking the connection hole in a square shape as an example, its four sides are not perpendicular or parallel to the boundary line of the bending zone), which is beneficial to reduce the stress concentration at the edge / edge of the connection hole in the bent state, and improve the influence of stress on the edge of the connection hole under the bending structure). It is not in a parallel direction with the display module bending, which is beneficial to reduce the stress concentration at the edge / frame / edge of the connection hole when bending, improve the influence of stress on the frame of the connection hole under the bending structure, and improve the peeling problem between the first touch control wiring and the first metal wiring of the driving layer located in the non-display area, thereby improving / avoiding the defect of touch failure caused by this. Preferably, in this way, the size of the existing connection hole can be maintained, so that there is no need to add a mask or a new process in the process. Preferably, the boundary line of the bending zone is parallel to the boundary line of the first display area 110 close to the lower frame area, or to the boundary line of the second display area 120.

[0067] In one embodiment, the first metal wiring 142 has a lap portion 142a, the lap portion 142a faces the connection hole 161 (i.e., the connection hole is disposed at the lap portion and connected to the lap portion), and the first touch wiring 171 is lapped to the lap portion 142a through the connection hole. The material of the lap portion 142a may be the same as that of the first metal wiring 142. During preparation, the insulating layer 160 covers the first metal wiring 142, and then the connection hole 161 (located in the lower frame area) is prepared when the insulating layer 160 is imaged, and the first metal wiring 142 is exposed through the connection hole 161.

[0068] In one embodiment, see Figure 5 and Figure 6The first touch line 171 is electrically connected / lapped to the first metal line 142 or the corresponding lapped portion 142a of the first metal line 142 through two or more connection holes 161. In this way, when the first touch line 171 of one of the connection holes 161 is peeled off from the first metal line 142, the remaining part (the isolation part 162 between adjacent connection holes 161) can remain normally connected, thereby ensuring the normal touch function. Under this structure, the isolation part 162 between the connection holes can be used to prevent the peeling between metals (that is, peeling occurs between the first touch line 171 and the first metal line 142 or the corresponding lapped portion 142a, but the isolation part 162 between the connection holes is used to prevent the peeling, prevent its degradation, and thus improve the reliability in disguise). In this embodiment, two or more connection holes are provided on the insulating layer corresponding to the first metal trace, and the size of the connection holes may be the same as the size of a single connection hole. In other embodiments, the size of the connection hole may be smaller than the size of a single connection hole (e.g., the side length of the connection hole is 2*2 or 3*3 μm). Preferably, the sides of the multiple connection holes close to the bending area are parallel to each other.

[0069] In one embodiment, the TP film layer includes a substrate, a second touch wiring layer, an insulating layer and a first touch wiring layer. The substrate is stacked on the side of the encapsulation layer away from the light-emitting layer, the second touch wiring layer is stacked on the side of the substrate away from the encapsulation layer, and the insulating layer is stacked thereon. The first touch wiring layer is arranged on the side of the insulating layer away from the second touch wiring layer, and the side of the first touch wiring layer away from the insulating layer has an optical glue. The cover plate is arranged on the side of the optical glue away from the first touch wiring layer. The substrate can be made of PI material, optical glue, CPI material or PET material. During production, a layer of liquid optical glue can be first applied on the encapsulation layer, and then cured by UV irradiation or exposure to prepare the optical glue layer.

[0070] It should be noted that the display panel can also be configured to include other functional structures, for example, the display panel can also include an identification structure to have a fingerprint identification function. For example, the identification structure can be a touch panel or a touch layer, and the touch panel can be arranged in the display panel by bonding, for example, the touch layer can be directly prepared on the encapsulation layer of the display panel, so as to facilitate the thin and light design of the display panel.

[0071] Another preferred embodiment of the present disclosure discloses a display device, which includes the display module in the above embodiment. Further, the display device includes a mobile phone, VR equipment, computer, television, car display equipment, etc.

[0072] It should be noted that the above describes some embodiments of the present application. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recorded in the claims can be performed in an order different from that in the above embodiments and still achieve the desired results. In addition, the processes depicted in the accompanying drawings do not necessarily require the specific order or continuous order shown to achieve the desired results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0073] The embodiments of the present application are intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the embodiments of the present application should be included in the scope of protection of the present application.

Claims

1. A display module, characterized in that: include: A display area, a non-display area at least partially surrounding the display area, the non-display area including a lower frame area, the lower frame area having a bending area, and further comprising: substrate; A driving layer, the driving layer is disposed on the substrate, and the driving layer includes a first metal wiring located in the non-display area; A light-emitting layer, the light-emitting layer being arranged on a side of the driving layer away from the substrate; A touch layer, wherein the touch layer is arranged on a side of the light-emitting layer away from the substrate, and includes a first touch wiring layer, wherein the first touch wiring layer includes a first touch wiring located in a non-display area, the first touch wiring is electrically connected to the first metal wiring through a connecting hole, and an angle between an extension line of an edge of the connecting hole close to the bending area and a boundary line of the bending area close to the display area is greater than 10°.

2. The display module according to claim 1, wherein: It also includes an encapsulation layer, which is arranged on a side of the light-emitting layer away from the substrate; The encapsulation layer includes a first sub-encapsulation layer and a second sub-encapsulation layer which are stacked and extend to the lower frame area. The distances from the boundaries of the first sub-encapsulation layer and the second sub-encapsulation layer to the connection hole are different.

3. The display module according to claim 1 or 2, characterized in that: It also includes an insulating layer, which is arranged on a side of the light-emitting layer away from the substrate and extends to the lower frame area, and a portion of the insulating layer located in the lower frame area has at least one connecting hole.

4. The display module according to claim 3, wherein: The first touch control wiring is electrically connected to the first metal wiring through at least one of the connection holes; The first metal wiring includes a lap portion, the connection hole exposes the lap portion, and the first touch wiring is electrically connected to the lap portion.

5. The display module according to claim 3, wherein: The first touch wiring is electrically connected to the first metal wiring through the plurality of connection holes, and the sides of the plurality of connection holes close to the bending area are parallel to each other; Preferably, the first metal wiring includes a lapped portion, and the first touch wiring is electrically connected to the lapped portion of the first metal wiring through the plurality of connection holes; Preferably, the overlapping parts corresponding to the multiple connection holes are connected as one.

6. The display module according to claim 3, characterized in that: An optical adhesive layer is stacked on a side of the first touch wiring away from the substrate, and a cover plate is disposed on a side of the optical adhesive layer away from the substrate.

7. The display module according to claim 1, wherein: The minimum distance from the connection hole to the boundary line of the bending area is between 10 and 20 μm; Preferably, the connection hole is square; Preferably, the connection hole is square, and the side length of the connection hole is between 2 and 50 μm; Preferably, the connection hole is rectangular, and the side length of the connection hole is between 10 and 20 μm.

8. The display module according to claim 1, wherein: The angle between the extension line of the side of the connecting hole close to the bending area and the boundary line of the bending area is between 10 and 50 degrees; Preferably, the angle between the extension line of the side of the connecting hole close to the bending area and the boundary line of the bending area is between 15 and 45 degrees; Preferably, an angle between an extension line of a side of the connecting hole close to the bending zone and a boundary line of the bending zone is between 20° and 40°.

9. The display module according to claim 1, wherein: The display area includes a first display area and a second display area at least partially surrounding the first display area, and the second display area is located between the first display area and the non-display area; The curvature of the first display area is different from the curvature of the second display area; Preferably, a surface of a portion of the substrate located in the first display area is a plane, and a surface of a portion of the substrate located in the second display area is a curved surface.

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

Images