Display module and display device

Abstract

The application relates to the technical field of display, in particular to a display module and a display device, which can improve the attaching effect of a support film layer and a display panel at a curved position. The display module comprises a cover plate, a display panel and a stainless steel layer which are arranged in layers, the stainless steel layer is arranged on the side of the display panel far from the cover plate; the stainless steel layer has a first area and a second area, the first area surrounds at least part of the second area, the bending curvature of the stainless steel layer in the first area is greater than that in the second area; the stainless steel layer comprises a plurality of island structures in the first area, and any two island structures are arranged in a spaced mode. The application is suitable for a curved display device.

Description

Technical Field

[0001] This application relates to the field of display technology, and more particularly to a display module and a display device. Background Technology

[0002] With the development of electronic device technology, screen thinning is a growing trend. In current Organic Light-Emitting Diode (OLED) display modules, a supporting film layer is typically placed on the side of the display panel away from the cover plate. However, current display modules have curved structures, such as the curved edges of mobile phone screens. In curved areas, poor adhesion between the display panel and the supporting film layer can easily occur, such as the inability to adhere tightly. Summary of the Invention

[0003] This application provides a display module and display device that can improve the adhesion effect between the support film layer and the display panel at curved surfaces.

[0004] In a first aspect, embodiments of this application provide a display module, including a cover plate, a display panel, and a stainless steel layer stacked together. The stainless steel layer is disposed on the side of the display panel away from the cover plate. The stainless steel layer has a first region and a second region, with the first region surrounding at least a portion of the second region. The curvature of the stainless steel layer in the first region is greater than the curvature in the second region. The stainless steel layer in the first region includes multiple island structures, with any two island structures spaced apart. This design, by dividing the curved area into independent island structures, allows each island to adapt to local curvature changes, reducing stress concentration and improving adhesion tightness.

[0005] In one possible implementation, adhesive is used to fill the space between any two island structures. The adhesive's elasticity and tackiness provide cushioning, improving the fit between the stainless steel layer and the display panel when bent, while also enhancing the connection stability between the island structures.

[0006] In one possible implementation, the first region includes a straight-line connecting region and an arc-shaped connecting region, with at least a portion of the multiple island structures located in the arc-shaped connecting region. The composite surface of the arc-shaped connecting region responds independently to bending in different directions through the island structures, improving the adhesion effect of the surface edges at corners.

[0007] In one possible implementation, the stainless steel layer in the first region further includes a positioning chain structure, which comprises multiple hollow positioning areas, with multiple island structures located in each of these positioning areas. The positioning chain structure enhances the stability of the island structures, reduces their displacement during bonding, and further improves the adhesion of the stainless steel layer to curved surfaces.

[0008] In one possible implementation, the positioning chain structure has a positioning chain and multiple positioning nodes. The positioning chain connects the multiple positioning nodes, and the width of each positioning node is greater than the width of the positioning chain. Each hollow area has at least one positioning node around it. The positioning nodes increase the contact area, enhancing the positioning effect on the isolated structure while maintaining overall flexibility.

[0009] In one possible implementation, the projection of the positioning node in the direction perpendicular to the stainless steel layer is circular, with a diameter greater than or equal to 0.6 mm and a diameter less than or equal to 1 mm. The circular positioning node has a simple manufacturing process, and its size range balances positioning effectiveness with bending flexibility, avoiding the impact of excessively large sizes on bending performance or the weakening of positioning effect by excessively small sizes.

[0010] In one possible implementation, the spacing between the positioning node and the adjacent island structure is greater than 0.035 mm, and the spacing between the positioning node and the adjacent island structure is less than 0.065 mm. This micron-level gap precisely balances positioning strength and elastic space, reducing the adhesion effect of the stainless steel layer to the display panel on curved surfaces.

[0011] In one possible implementation, the positioning area has multiple straight edges, and a positioning node is provided at the junction of at least two adjacent straight edges of the positioning area. The positioning node at the corner can position multiple adjacent isolated structures to improve the overall structural stability and enhance the adhesion between the stainless steel layer and the display panel on the curved surface.

[0012] In one possible implementation, the positioning area has multiple straight edges, and a positioning node is provided at at least one of the straight edges. The positioning node in the middle of the straight edge segments and constrains the island structure, reducing the offset of the island structure along the straight edge direction, improving the consistency of the curved surface shape, and improving the adhesion effect between the stainless steel layer and the display panel on the curved surface.

[0013] In one possible implementation, the stainless steel layer includes multiple first perforated structures and multiple second perforated structures, which intersect to form multiple island structures. The first perforated structures extend in a straight line from one edge of the first region closer to the second region to one edge farther from the second region. The radial and transverse perforated design achieves stress matching in two dimensions, adapts to the bending characteristics of composite curved surfaces, and improves the adhesion of the stainless steel layer in the bending area.

[0014] Secondly, based on the same inventive concept, embodiments of this application also provide a display device, including the aforementioned display module. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 This is a cross-sectional structural diagram of a portion of a display module in related technologies; Figure 2 This is a cross-sectional structural diagram of a portion of another display module in related technologies; Figure 3 This is a top view of a stainless steel layer in a display module, as described in related technologies. Figure 4 This is a top view of a stainless steel layer in a display module according to an embodiment of this application; Figure 5 This is a cross-sectional structural diagram of a display module according to an embodiment of this application; Figure 6 This is a top view of a portion of a stainless steel layer in an embodiment of this application; Figure 7 This is a top view of a stainless steel layer in a partially linearly connected area according to an embodiment of this application; Figure 8 This is a top view of a portion of another stainless steel layer in an embodiment of this application; Figure 9 yes Figure 8 A schematic diagram of the cross-sectional structure of the stainless steel layer and the adhesive layer in the flattened state along the AA' direction. Figure 10 yes Figure 8 A schematic diagram of the cross-sectional structure of the laminated stainless steel layer and adhesive layer under bending conditions along the AA' direction. Figure 11 This is a top view of a portion of another stainless steel layer in an embodiment of this application; Figure 12 yes Figure 11 A schematic diagram of the positioning chain structure in the diagram; Figure 13 yes Figure 11 A magnified view of a portion of the image; Figure 14 This is a top view of a portion of another stainless steel layer in an embodiment of this application; Figure 15 yes Figure 14 A schematic diagram of the positioning chain structure in the diagram; Figure 16 yes Figure 14 A magnified view of a portion of the image. Detailed Implementation

[0017] To better understand the technical solution of this application, the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0018] It should be understood that the described embodiments are merely some, not all, of the embodiments in this application. All other embodiments obtained by those skilled in the art based on the embodiments in this application without inventive effort are within the scope of protection of this application.

[0019] The terminology used in the embodiments of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. The singular forms “a,” “the,” and “the” used in the embodiments of this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise.

[0020] It should be understood that the term "and / or" used in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0021] In related technologies, such as Figure 1 As shown, the display module includes a cover plate 1, a display panel 2, and a support film layer 3 stacked sequentially. The support film layer 3 may include foam 301 and copper foil 302. The thickness of foam 301 is greater than 0.08mm, and the thickness of copper foil 302 can be 0.05mm. To make the display module thinner, it can be modified as follows: Figure 2 The structure shown replaces the film layer in the support film layer 3 with a stainless steel layer 31. The stainless steel (SUS) layer 31 can be attached to the side of the display panel 2 away from the cover plate 1 via the adhesive layer 32. The thickness of the stainless steel layer 31 can be 0.06mm. Compared to the foam + copper foil method, using a stainless steel layer 31 to make the support film layer 3 allows the display module to be thinner. However, due to the high rigidity of stainless steel, poor adhesion between the display panel 2 and the stainless steel layer 31 is prone to occur in curved areas, such as failure to adhere tightly.

[0022] like Figure 3 As shown, for example, the boundary of the display module in a mobile phone can be roughly rectangular, with curved edges. In related technologies, the stainless steel layer 31 has cutouts only in specific non-curved locations such as the front camera.

[0023] To address the issue of poor adhesion at curved surfaces, such as Figures 3 to 7As shown, this application embodiment provides a display module, including: a cover plate 1, a display panel 2, and a stainless steel layer 31 stacked together. The stainless steel layer 31 is disposed on the surface of the display panel 2 away from the cover plate 1. The stainless steel layer 31 has a first region A1 and a second region A2, with the first region A1 surrounding at least a portion of the second region A2. The curvature of the display module in the first region A1 is greater than the curvature of the second region A2. The first region A1 can be a curved surface region, and the second region A2 can be a non-curved surface region.

[0024] The stainless steel layer 31 has a hollow area 4 in the first region A1, which makes it easier to bend and deform the stainless steel layer 31 in the first region A1, thereby making the adhesion between the stainless steel layer 31 at the bent position and the display panel 2 more tight and improving the adhesion effect.

[0025] The boundary of the stainless steel layer 31 is roughly rectangular, which can be a rounded rectangle, with straight edges and curved connecting edges. Any two adjacent straight edges are connected by curved connecting edges. The first region A1 includes a straight connecting region A11 corresponding to the straight edges and an arc connecting region A12 corresponding to the arc connecting edges. In the straight connecting region A11, the hollowed-out region 4 can be a parallel strip-shaped hollowed-out region 4, and the extension direction of the strip-shaped hollowed-out region 4 is consistent with the extension direction of the straight edge. In the straight connecting region A11, the stainless steel layer 31 gradually slopes along the direction perpendicular to the straight edge. Therefore, the multiple parallel strip-shaped hollowed-out regions 4 can match the bending direction requirements. In the arc connecting region A12, the hollowed-out region 4 can be a strip-shaped hollowed-out extending outward from the second region A2, arranged in a fan-shaped radial pattern to match the composite curved surface bending requirements of the arc connecting region A12. The size of the cutout area 4 can be set as needed. If the cutout area 4 is too small, the bending effect will be poor, which will have a significant negative impact on the adhesion. If the cutout area 4 is too large, the stainless steel layer 31 will provide poor protection and support for the display panel 2. Therefore, the size of the cutout area 4 needs to be designed with both dimensions in mind. For example, in the straight-line connection area A11, the distance between adjacent cutout areas 4 in the direction perpendicular to the length of the cutout area 4 is d1, d1≥0.1mm, d1≤0.15mm; the width of the cutout area 4 is d2, d2≥0.13mm, d2≤0.25mm; the length of the cutout area 4 is d3, d3≥4.1mm, d3≤6mm; and the distance between adjacent cutout areas 4 in the width direction of the cutout area 4 is d4, d4≥0.17mm, d4≤0.25mm. In the arc-shaped connecting region A12, one edge of the hollowed-out region 4 extends to the outer boundary of the stainless steel layer 31. Multiple hollowed-out regions 4 are arranged in a fan shape, and the intersection of the extension lines of multiple strip-shaped hollowed-out regions 4 can coincide with the center point of the arc-shaped boundary of the stainless steel layer 31 corresponding to the arc-shaped connecting region A12. In each arc-shaped connecting region A12, the number of hollowed-out regions 4 can be n, where n is greater than or equal to 10, and the included angle between the extension lines of any adjacent hollowed-out regions 4 is θ, where θ = 90° / (n-1). In the arc-shaped connecting region A12, the width of the hollowed-out region 4 is greater than or equal to 0.13 mm, the width of the hollowed-out region 4 is less than or equal to 0.25 mm, and the length of the hollowed-out region 4 is greater than or equal to 4.1 mm. At the intersection of the arc-shaped connecting region A12 and the straight connecting region A11, the distance between the nearest hollowed-out region 4 in different connecting regions is L, where L ≥ 2.6 mm.

[0026] To further improve the adhesion effect, such as Figure 5 and Figure 8As shown in the illustration, this application also provides a display module, including: a cover plate 1, a display panel 2, and a stainless steel layer 31 stacked together. The stainless steel layer 31 is disposed on the side of the display panel 2 away from the cover plate 1. For example, the stainless steel layer 31 can be attached to the display panel 2 by an adhesive layer 32. The stainless steel layer 31 has a first region A1 and a second region A2. The first region A1 surrounds at least a portion of the second region A2. The curvature of the stainless steel layer 31 in the first region A1 is greater than the curvature in the second region A2. For example, the outer boundary of the stainless steel layer 31 is approximately rectangular. The middle region of the stainless steel layer 31 is not bent, which is the flat second region A2. The edge region of the stainless steel layer 31 bends away from the cover plate 1 to form a curved first region A1. The stainless steel layer 31 in the first region A1 includes a plurality of island structures 310, which are spaced apart from any two island structures 310.

[0027] Specifically, in the first region A1, the stainless steel layer 31 is divided into multiple island structures 310 by intersecting openwork regions 4. There is no rigid contact between any two different island structures 310.

[0028] This application embodiment sets multiple spaced-apart island structures in the first region of the curved stainless steel layer. Each island structure can independently respond to surface deformation, reducing the problem of stress concentration that can easily lead to bonding gaps, improving the adhesion tightness between the display panel and the stainless steel layer, and enhancing the adhesion effect.

[0029] In some embodiments, adhesive is used to fill the space between any two island structures 310, and the adhesive here can be the adhesive in the adhesive layer 32 mentioned above.

[0030] Specifically, the hollow areas 4 between the island structures 310 are connected by adhesive. The adhesive has ductility and adhesion. When the stainless steel layer 31 is bent, the adhesive between the different island structures 310 provides a buffer, making it easier to bend and deform, and improving the connection stability between the different island structures 310.

[0031] In some embodiments, the first region A1 includes a straight-line connecting region A11 and an arc-shaped connecting region A12, with at least a portion of the plurality of island structures 310 located in the arc-shaped connecting region A12.

[0032] Specifically, for example, the outer boundary of the stainless steel layer 31 is roughly a rounded rectangle. The four straight edge areas of the rounded rectangle are the straight connection areas A11, and the four rounded corner areas are the arc connection areas A12. The stainless steel layer 31 bends in the same direction in the straight connection area A11, while it bends in two different directions in the arc connection area A12, exhibiting characteristics of a composite curved surface. Therefore, the adhesion of the stainless steel layer 31 in the arc connection area A12 is more difficult. Multiple island structures 310 are set in the arc connection area A12. Since the multiple island structures 310 are spaced apart in different directions, they can adapt to the bending characteristics of the composite curved surface, improving the adhesion tightness between the display panel and the stainless steel layer 31 on the composite curved surface and enhancing the adhesion effect.

[0033] The following describes the relevant dimensions of the island structure 310 in a specific embodiment, such as... Figures 8 to 10 As shown, x is the tangent direction of the outer boundary of the stainless steel layer 31, and y is the direction perpendicular to x. In the arc-shaped connection area A12, multiple island structures 310 are arranged along the x and y directions respectively. Taking multiple island structures 310 arranged in the y direction as an example, in an arc-shaped connection area A12, the number of multiple island structures 310 arranged in the y direction is n, where n > 1. Taking three island structures 310 arranged in the y direction as an example, with a fixed bending angle α, the bending arc length is a fixed value S. Taking n = 3 as an example, S = S1 + S2 + S3, where S1, S2, and S3 are the dimensions of the three island structures 310 in the y direction, respectively. In the flattened state, the dimension of the stainless steel layer 31 from the outer boundary of the stainless steel layer 31 in the second region A2 to the outer boundary of the outermost island structure 310 in the y direction is Ly. The dimension of the hollow area of ​​the stainless steel layer 31 in the y direction is D, where D is also the spacing between different island structures 310. When the stainless steel layer 31 is bent, the angle between the normal of the stainless steel layer 31 in the second region A2 and the adjacent island structure 310 is β. In the y-direction, the angle between the normals of any two adjacent island structures 310 is also β. The stack thickness of the stainless steel layer 31 and the adhesive layer 32 is H. The stainless steel layer 31 meets the dimensional requirements of the following formula in the y-direction: D = (Ly - S) / n = θ × H × n. The calculation method in the x-direction can be the same as that in the y-direction.

[0034] In some embodiments, such as Figures 11 to 13 As shown, the stainless steel layer 31 in the first region A1 also includes a positioning chain structure 311, which includes multiple hollow positioning areas B, and multiple island structures 310 are located in multiple positioning areas B respectively.

[0035] Specifically, the positioning chain structure 311 is made of stainless steel material other than the island structure 310. The positioning chain structure 311 has a crisscrossing chain-like structure, and the area surrounded or partially surrounded by the chain-like structure is the positioning area B. Because the multiple island structures 310 are too loosely spaced, by setting the positioning chain structure 311 and placing the island structures 310 within the positioning area B defined by the positioning chain structure 311, the stability between the multiple island structures 310 can be increased, and the probability of the island structures 310 shifting when they are bonded to the display panel is reduced.

[0036] In some embodiments, the positioning chain structure 311 has a positioning chain 3111 and a plurality of positioning nodes 3112, the positioning chain 3111 is connected between the plurality of positioning nodes 3112, the width of the positioning node 3112 is greater than the width of the positioning chain 3111, and each hollow area B has at least one positioning node 3112 around it.

[0037] Specifically, the positioning chain 3111 is a strip-shaped extension structure, and the positioning node 3112 is a structure on the positioning chain 3111 that is larger in size than the positioning chain 3111. The width of the positioning node 3112 is greater than the width of the positioning chain 3111, meaning that in the direction perpendicular to the extension of the positioning chain 3111, the size of the positioning node 3112 is larger than the size of the positioning chain 3111. Due to the larger width of the positioning node 3112, at the position of the positioning node 3112, the boundary of the island structure 310 matches the edge structure of the positioning node 3112. This further enhances the positioning effect of the positioning node 3112 on the island structure 310.

[0038] Understandably, Figures 11 to 13 In the structure shown, the positioning chain structure 311 can achieve the effect of reducing the offset of the island structure 310 by simply setting the positioning chain 3111 without setting the positioning nodes 3112. However, adding the positioning nodes 3112 can further improve the positioning effect. In addition, the embodiments of this application do not limit the number and shape of the positioning nodes 3112. For example, only one or two positioning nodes 3112 can be set around each hollow area B, and the boundary shape of the positioning nodes 3112 can be circular, quadrilateral, or pentagonal, etc.

[0039] In some embodiments, the projection of the positioning node 3112 in the direction perpendicular to the stainless steel layer 31 is a circle with a diameter greater than or equal to 0.6 mm and a diameter less than or equal to 1 mm.

[0040] Specifically, the circular positioning node 3112 can be set at the intersection of the positioning chains 3111 extending in different directions, and can play a positioning role for the isolated structures 310 in each adjacent hollow area B at the intersection. The larger the size of the positioning node 3112, the better the positioning effect of the isolated structures 310, but the less effective the bending effect of the overall stainless steel layer 31. Conversely, the smaller the size of the positioning node 3112, the better the bending effect of the overall stainless steel layer 31, but the less effective the positioning effect of the isolated structures 310. Therefore, the size is designed to balance the positioning effect of the isolated structures 310 and the bending effect of the stainless steel layer 31.

[0041] In some embodiments, the interval between the positioning node 3112 and the adjacent island structure 310 is greater than 0.035 mm, and the interval between the positioning node 3112 and the adjacent island structure 310 is less than 0.065 mm.

[0042] Specifically, if the gap between the positioning node 3112 and the adjacent island structure 310 is too small, the bending effect will be reduced due to rigid constraints. If the gap is too large, the positioning effect will be weakened. The gap within this range can take into account the positioning effect of the island structure 310, and also provide the necessary buffer and elastic space for the bending of the stainless steel layer 31, so as to improve the bending effect of the stainless steel layer 31.

[0043] In some embodiments, the positioning area B has multiple straight edges, and a positioning node 3112 is provided at the connection point of at least two adjacent straight edges of the positioning area B.

[0044] Specifically, for example, positioning region B is a quadrilateral with four straight sides, defined by positioning chains 3111 extending in different directions. Positioning nodes 3112 are set at the junctions of two adjacent straight sides of positioning region B, meaning positioning nodes 3112 are located at at least one corner of positioning region B. For the quadrilateral positioning region B, the island structure 310 within it is also a quadrilateral, with the four straight sides of positioning region B corresponding to the four straight sides of island structure 310. Since positioning nodes 3112 are located at the corners of the quadrilaterals, island structure 310 will also have a non-right-angled corresponding pattern at the corner position of the positioning node 3112 to match the larger positioning node 3112. Based on pattern matching, the positioning node 3112 achieves the positioning effect of island structure 310. When positioning nodes 3112 are set at the junctions of two straight sides of positioning region B, they can simultaneously position island structures 310 in multiple positioning regions B adjacent to the junction. Setting a positioning node 3112 at the corner can reduce the connection between the island structure 310 and the positioning chain 3111 at the corner.

[0045] In some embodiments, such as Figures 14 to 16As shown, the positioning area B has multiple straight edges, and a positioning node 3112 is set at at least one of the straight edges of the positioning area B.

[0046] Specifically, for example, positioning region B is a quadrilateral with four straight sides, defined by positioning chains 3111 extending in different directions. Positioning nodes 3112 are set at the straight sides of positioning region B, that is, positioning nodes 3112 are set at the middle of the straight sides of the quadrilateral. Therefore, the straight side is recessed inward at the position of positioning node 3112 to avoid the positioning node 3112. The island structure 310 in positioning region B is also a quadrilateral, with the four straight sides of positioning region B corresponding to the four straight sides of island structure 310. The position of the island structure 310 corresponding to the adjacent positioning node 3112 is also recessed inward to match the protrusion of positioning node 3112 relative to positioning chain 3111. In this way, positioning node 3112 serves to position island structure 310 at the straight side. Positioning node 3112 can position island structures 310 in two adjacent positioning regions B. Setting a positioning node 3112 at the straight edge can reduce the connection between the island structure 310 and the positioning chain 3111 at the straight edge. Understandably, the shape of the positioning node 3112 is not limited in this embodiment. For example, the boundary shape of the positioning node 3112 can be circular, pentagonal, or hexagonal.

[0047] In some embodiments, the stainless steel layer 31 includes a plurality of first hollow structures 41 and a plurality of second hollow structures 42, which intersect to form a plurality of island structures 310; the first hollow structure 41 extends in a straight line from one edge of the first region A1 near the second region A2 to one edge away from the second region A2.

[0048] Specifically, through the grid-like island structure 310 formed by the radial extension of the first hollow structure 41 and the lateral intersection of the second hollow structure 42, the stainless steel layer 31 achieves two-dimensional bending stress matching in the arc-shaped connection area A12. This allows the radially extending first hollow structure 41 to match circumferential bending deformation, and the laterally extending second hollow structure 42 to match radial bending deformation, in order to adapt to the bending characteristics of the composite curved surface.

[0049] Based on the same inventive concept, this application also provides a display device, which includes the aforementioned display panel. This display device can be any electronic device with display functionality, such as a mobile phone, tablet computer, laptop computer, e-reader, or television.

[0050] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A display module, characterized in that, include: A cover plate, a display panel, and a stainless steel layer are stacked together, wherein the stainless steel layer is disposed on the side of the display panel away from the cover plate; The stainless steel layer has a first region and a second region, the first region surrounding at least a portion of the second region, and the curvature of the stainless steel layer in the first region is greater than the curvature in the second region. The stainless steel layer in the first region includes multiple island structures, with any two island structures spaced apart.

2. The display module according to claim 1, characterized in that, Adhesive is used to fill the space between any two of the island structures.

3. The display module according to claim 1, characterized in that, The first region includes a straight-line connection region and an arc-shaped connection region, with at least a portion of the plurality of island structures located in the arc-shaped connection region.

4. The display module according to claim 1, characterized in that, The stainless steel layer in the first region also includes a positioning chain structure, which includes multiple hollow positioning areas, and the multiple island structures are respectively located in the multiple positioning areas.

5. The display module according to claim 4, characterized in that, The positioning chain structure has a positioning chain and multiple positioning nodes. The positioning chain is connected between the multiple positioning nodes. The width of the positioning node is greater than the width of the positioning chain. Each of the hollow areas has at least one positioning node around it.

6. The display module according to claim 5, characterized in that, In the direction perpendicular to the stainless steel layer, the projection of the positioning node is a circle with a diameter greater than or equal to 0.6 mm and a diameter less than or equal to 1 mm.

7. The display module according to claim 5, characterized in that, The distance between the positioning node and the adjacent island structure is greater than 0.035 mm, and the distance between the positioning node and the adjacent island structure is less than 0.065 mm.

8. The display module according to claim 5, characterized in that, The positioning area has multiple straight edges, and the positioning node is provided at the connection point of at least two adjacent straight edges of the positioning area.

9. The display module according to claim 5, characterized in that, The positioning area has multiple straight edges, and the positioning node is provided at at least one of the straight edges of the positioning area.

10. The display module according to claim 1, characterized in that, The stainless steel layer includes multiple first hollow structures and multiple second hollow structures, which intersect to form multiple island structures; The first hollow structure extends in a straight line from one edge of the first region closer to the second region to one edge away from the second region.

11. A display device, characterized in that, include: The display module as described in any one of claims 1 to 10.

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