Display device

Abstract

This application provides a display device, which includes a display module and a middle frame. The display module includes a display panel, and the display panel includes a main body, a curved part, and a binding part. The binding part is disposed on the back side of the main body, and the curved part is connected between the main body and the binding part. By adding a second step to the first step on the side wall of the middle frame, and connecting the first side of the first step to the second side of the second step, and setting both the first side and the second side as concave curved surfaces, the plane where the second step surface of the second step is located is higher than the plane where the main body is located. When the curved part collides with the middle frame, the connection between the curved part and the second side and the second step surface of the second step can be avoided. It can also make the curved part and the first side and the second side surface all surface contact, thereby increasing the contact area when the curved part collides with the middle frame, thereby reducing the impact stress when the curved part collides with the middle frame.

Description

Technical Field

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

[0002] With the development of display technology, display devices are becoming increasingly common and are gradually becoming an indispensable part of people's daily work and life. Correspondingly, people have also placed higher demands on the display area and bezel size of display devices, making the reduction of the bezel area of ​​display devices a research hotspot for those skilled in the art.

[0003] Currently, existing display devices typically use adhesive bonding to fix the cover plate of the display module to the stepped surface of the mid-frame. In drop tests, the mid-frame deforms and impacts the bent portion of the flexible display panel in the display module, causing damage and failure of the display module.

[0004] Therefore, it is necessary to provide a display device to improve this deficiency. Summary of the Invention

[0005] Embodiments of this application provide a display device that can reduce the impact stress experienced by the display module when it collides with the mid-frame.

[0006] Embodiments of this application provide a display device, including:

[0007] A display module includes a display panel, the display panel including a main body, a curved part and a binding part, the binding part being disposed on the back side of the main body, and the curved part connecting the main body and the binding part;

[0008] The display module is located within the middle frame; the middle frame has at least one sidewall near the curved portion.

[0009] The sidewall includes a first step portion and a second step portion. The second step portion is disposed on the first step portion. The first side of the first step portion facing the curved portion is connected to the second side of the second step portion facing the curved portion. The first side is a curved surface recessed into the first step portion, and the second side is a curved surface recessed into the second step portion. The second step portion has a second step surface connected to the second side, and the plane where the second step surface is located is higher than the plane where the main body portion is located.

[0010] According to one embodiment of this application, the first side and the second side are located on the same curved surface.

[0011] According to one embodiment of this application, the display module further includes a first protective layer, which is disposed at least on the outer surface of the curved portion;

[0012] Wherein, the radius of curvature of the first side is greater than or equal to the radius of curvature of the outer surface of the curved section of the first protective layer, and the radius of curvature of the second side is greater than or equal to the radius of curvature of the outer surface of the curved section of the first protective layer.

[0013] According to one embodiment of this application, the radius of curvature of the first side is the same as the radius of curvature of the second side.

[0014] According to one embodiment of this application, the first step portion has a first step surface connected to the first side surface, and the second step portion is disposed on the first step surface;

[0015] The plane containing the first step surface is higher than the plane containing the main body.

[0016] According to one embodiment of this application, the first step portion has a first step surface connected to the first side surface, and the second step portion is disposed on the first step surface;

[0017] Wherein, the plane containing the first step surface is flush with the plane containing the main body; or, the plane containing the main body is higher than the plane containing the first step surface.

[0018] According to one embodiment of this application, the first step portion has a first step surface connected to the first side surface, the second step portion is disposed on the first step surface, and the display module further includes a second protective layer, which is disposed on the light-emitting side of the main body portion;

[0019] Wherein, the first step portion and the second step portion partially overlap in a direction perpendicular to the first step surface, one end of the second protective layer is disposed on the first step surface and the second step surface, and the minimum distance between the side surface of the second protective layer near the second step surface and the second step surface is greater than 0.05 mm.

[0020] According to one embodiment of this application, the display device further includes an adhesive layer disposed between the second protective layer and the first step surface and the second step surface.

[0021] According to one embodiment of this application, the minimum distance between the first step surface and the second step surface is greater than or equal to 0.05 mm.

[0022] According to one embodiment of this application, the display module includes a display area and a border area disposed around the display area. The border area includes a lower border area disposed on one side of the display area. The curved portion is disposed in the lower border area. The first stepped portion is located in the border area and is disposed around the display area. The second stepped portion is disposed in the lower border area.

[0023] The beneficial effects of the embodiments of this application are as follows: The embodiments of this application provide a display device, which includes a display module and a middle frame. The display module includes a display panel, and the display panel includes a main body, a curved part, and a binding part. The binding part is disposed on the back side of the main body, and the curved part is connected between the main body and the binding part. By adding a second step to the first step on the side wall of the middle frame, and connecting the first side of the first step facing the curved part with the second side of the second step facing the curved part, and setting both the first side and the second side as concave curved surfaces, the plane where the second step surface of the second step is located is higher than the plane where the main body is located. When the curved part collides with the middle frame, the collision at the junction of the curved part and the second side and the second step surface of the second step can be avoided. It can also make the curved part and the first side and the second side surface in surface contact. This can increase the contact area when the curved part collides with the middle frame, thereby reducing the impact stress when the curved part collides with the middle frame. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of an existing display device;

[0025] Figure 2 A schematic diagram illustrating the collision between the mid-frame and the display module of an existing display device.

[0026] Figure 3 A plan view of a display device provided for an embodiment of this application;

[0027] Figure 4 For along Figure 3 The cross-sectional view along the A-A' direction shown;

[0028] Figure 5 A collision diagram of the mid-frame and the display module provided for an embodiment of this application;

[0029] Figure 6 A schematic diagram showing the relevant dimensions of the display device provided for embodiments of this application. Detailed Implementation

[0030] The following descriptions of the embodiments are based on the accompanying illustrations and are used to illustrate specific embodiments in which this application can be implemented. Directional terms used in this application, such as [up], [down], [front], [back], [left], [right], [inner], [outer], [side], etc., are only for reference to the accompanying drawings. Therefore, the directional terms used are for illustrative and understanding purposes and not for limiting the application. In the figures, structurally similar units are represented by the same reference numerals.

[0031] The present application will be further described below with reference to the accompanying drawings and specific embodiments.

[0032] Embodiments of this application provide a display device, such as... Figure 3 As shown, Figure 3 The diagram below is a plan view of a display device provided in an embodiment of this application. The display module includes a display area AA and a border area BA disposed around the display area. The border area BA1 is composed of a lower border area BA1, an upper border area BA2, a left border area BA3, and a right border area BA4.

[0033] like Figure 4 As shown, Figure 4 For along Figure 3 The cross-sectional view along the A-A' direction shown indicates that the display device 100 includes a display module 1 and a mid-frame 2, with the display module 1 disposed on the mid-frame 2. The display module 1 includes a display panel 11, which is a flexible organic light-emitting diode (OLED) display panel. The display panel 11 includes a main body 111, a bending portion 112, and a bonding portion 113. The bonding portion 113 is disposed on the back side of the main body 111, and the bending portion 112 connects the main body 111 and the bonding portion 113. The main body 111 primarily functions to display images. The bending portion 112 has better bending performance than both the main body 111 and the bonding portion 113. The bending portion 112 primarily bends the bonding portion 113 to the back side of the main body 111 to reduce the width of the lower bezel BA1 of the display device. The bonding portion 113 is used to bond and connect the integrated driver circuit chip and the flexible circuit board.

[0034] The display module 1 also includes a second protective layer 12, which is disposed on the light-emitting side of the main body 111. The light-emitting side of the main body 111 is the side of the main body 111 that is away from the binding part 113. The second protective layer 12 mainly serves to protect the display module 1 and prevent the display module 1 from being impacted or scratched.

[0035] In one embodiment, the second protective layer 12 is made of glass, i.e., the second protective layer 12 is a glass cover. In practical applications, the material of the second protective layer 12 is not limited to glass in the above embodiments, and can also be replaced with other known rigid materials.

[0036] The display module 1 also includes a first protective layer 13, a first back plate 14, a second back plate 15, a composite support and heat dissipation layer 16, an adhesive layer 17, a polarizing layer 18, and an optical adhesive layer 19. The first back plate 14 and the second back plate 15 are opposite to each other and spaced apart. The main body 111 is disposed on the surface of the first back plate 14 away from the second back plate 15. The bonding part 113 is disposed on the side surface of the second back plate 15 away from the first back plate 14. The bending part 112 connects the main body 111 and the bonding part 113. Figure 4 In the finished structure of the display module shown, the curved portion 112 is configured in a curved shape. A polarizing layer 18 is disposed on the light-emitting surface of the main body portion 111, an optical adhesive layer 19 is disposed on the surface of the polarizing layer 18 facing away from the main body portion 111, and a first protective layer 13 is disposed on the surface of the optical adhesive layer 19 facing away from the main body portion 111.

[0037] A composite support heat dissipation layer 16 is disposed between the first back plate 14 and the second back plate 15. The composite support heat dissipation layer 16 may include, but is not limited to, a light-shielding layer, a buffer layer, a support layer, and a heat dissipation layer stacked together. The material of the heat dissipation layer may be, but is not limited to, copper foil, and the material of the buffer layer may be, but is not limited to, foam. An adhesive layer 17 is disposed between the composite support heat dissipation layer 16 and the second back plate 15. Both opposite surfaces of the adhesive layer 17 are adhesive, and the adhesive layer 17 may be, but is not limited to, double-sided adhesive.

[0038] The first protective layer 13 includes a curved section 131, a first straight section 132, and a second straight section 133. The first straight section 132 is laid flat on the main body 111, the curved section 131 is disposed on the curved part, and the shape of the curved section 131 is adapted to the shape of the curved part 112. The second straight section 133 is laid flat on the binding part 113.

[0039] like Figure 4 As shown, the middle frame 2 includes a base plate 201 and a side wall 202. The side wall 202 is disposed on the base plate 201 and located at one end of the curved portion 112. The side wall 202 includes a first step portion 21 and a second step portion 22. The second step portion 22 is disposed on the first step portion 21. The first side surface 212 of the first step portion 21 facing the curved portion 112 is connected to the second side surface 222 of the second step portion 22 facing the curved portion 112. The first side surface 212 is a curved surface recessed into the first step portion 21, and the second side surface 222 is a curved surface recessed into the second step portion 22.

[0040] Specifically, the middle frame 2 includes a base plate 201 and a side wall 202. The side wall 202 is disposed on the outer periphery of the base plate 201. The side wall 202 located at one end of the curved portion 112 is provided with a first step portion 21 and a second step portion 22. The other side walls 202 are only provided with the first step portion 21 and are not provided with the second step portion 22. The first step portion 21 is disposed on the side wall 202 and located at the junction of the side wall 202 and the base plate 201. The first step portion 21 has a first step surface 211 that connects to the first side surface 212. The second step portion 22 is disposed on the first step surface 211 of the first step portion 21 near the edge of the curved portion 112. The second step portion 22 has a second step surface 221 that connects to the second side surface 222. The first side surface 212 is a curved surface recessed into the first step portion 21, and the second side surface 222 is a curved surface recessed into the second step portion 22. This allows the first step portion 21 and the second step portion 22 to form a recessed receiving groove on the side near the curved portion 112. When the middle frame 2 deforms due to a drop, the curved portion 112 of the flexible display panel 11 and the curved section 131 of the first protective layer 13 can extend into the receiving groove. This increases the distance between the curved portion 112 and the side wall 202 of the middle frame 2, thereby increasing the travel between the curved portion 112 and the side wall 202 of the middle frame 2 during a drop and reducing the risk of the middle frame 2 colliding with the display module 1 and causing damage to the display module 1.

[0041] It should be noted that, as Figure 1 As shown, Figure 1 The diagram shows the structure of an existing display device. The middle frame 2 of the existing display device only has a first step portion 21, and the connection surface between the first side 212 of the first step portion 21 and the first step surface 211 is a convex transition surface 213 after beveling.

[0042] like Figure 2 As shown, Figure 2 This is a schematic diagram of the collision between the mid-frame and the display module of an existing display device. In the drop test, when the mid-frame 2 and the display module 1 collide, if the display module 1 comes into contact with the transition surface 213, the contact method between the display module 1 and the transition surface 213 should be point contact. Since the material of the mid-frame 2 is metal, its hardness is significantly greater than that of the display module 1. Therefore, the mid-frame 2 will generate a large impact stress on the bent part 112 of the flexible display panel 11, which can easily cause the bent part 112 to break, ultimately causing the display module to be damaged and fail, and thus failing the drop test.

[0043] Combination Figure 4 and Figure 5As shown in the embodiments of this application, since the first side 212 is connected to the second side 222, and both the first side 212 and the second side 222 are concave curved surfaces, when the middle frame 2 deforms and collides with the display module 1, the curved portion 112 of the flexible display panel 11 and the curved section 131 of the first protective layer 13 can extend into the receiving groove formed by the concavity of the first side 212 and the second side 222. Even if the curved section 131 of the first protective layer 13 comes into contact with the first side 212 and the second side 222, since the outer surface of the curved section 131 is a convex curved surface and the first side 212 and the second side 222 are both concave curved surfaces, the outer surface of the curved section 131 can fit against the first side 212 and the second side 222. This allows the outer surface of the curved section 131 to contact the first side 212 and the second side 222 in a surface contact manner, thus effectively reducing the impact stress generated by the collision between the middle frame 2 and the display module 1, thereby reducing the risk of damage to the display module 1.

[0044] Furthermore, the plane containing the second step surface 221 is higher than the plane containing the main body 111. It should be noted that the plane containing the main body 111 is the surface of the first back plate 14 facing away from the second back plate 15. The "higher than" in the plane containing the second step surface 221 is relative to the horizontal plane containing the bottom plate 201 of the middle frame 2. The distance between the plane containing the main body 111 and the horizontal plane containing the bottom plate 201 is set as the first height, and the distance between the plane containing the second step surface 221 and the horizontal plane containing the bottom plate 201 is set as the second height. The second height is greater than the first height. When the middle frame 2 deforms due to a fall, since the plane where the second step surface 221 is located is higher than the plane where the main body 111 is located, the curved part 112 of the display panel 11 will only contact the first side 212 of the first step 21 and the second side 222 of the second step 22, which are closer and lower in height, and will not contact the junction of the second side 222 and the second step surface 221. Therefore, it can avoid the corner of the curved part 112 of the display panel 11 and the junction of the second step surface 221 and the second side 222 of the second step 22 when the middle frame 2 deforms due to a fall.

[0045] In one embodiment, such as Figure 4 As shown, the plane where the first step surface 211 is located is higher than the plane where the main body part 111 is located. The second step part 22 is disposed on the first step surface 211. Since the plane where the second step surface 221 is located is higher than the plane where the main body part 111 is located, the distance between the plane where the second step surface 221 is located and the plane where the main body part 111 is located can be further increased, thereby further reducing the risk of damage to the display module due to deformation of the middle frame.

[0046] In one embodiment, the plane where the main body 111 is located is higher than the plane where the first step surface 211 is located, and the second step 22 is disposed on the first step surface 211. Since the plane where the second step surface 221 is located is higher than the plane where the main body 111 is located, the distance between the plane where the second step surface 221 is located and the plane where the main body 111 is located can also be increased, thereby further reducing the risk of damage to the display module due to deformation of the middle frame.

[0047] In one embodiment, the plane containing the first step surface 211 is flush with the plane containing the main body 111, meaning the plane containing the first step surface 211 and the plane containing the main body 111 are on the same horizontal plane. The second step portion 22 is disposed on the first step surface 211. Since the plane containing the second step surface 221 is higher than the plane containing the main body 111, this also increases the distance between the plane containing the second step surface 221 and the plane containing the main body 111, thereby further reducing the risk of damage to the display module due to deformation of the mid-frame.

[0048] Furthermore, such as Figure 4 As shown, the first side 212 and the second side 222 are located on the same curved surface, which allows for a seamless transition between the first side 212 and the second side 222, avoiding a non-concave transition surface between the first side 212 and the second side 222, and ensuring that the display module 1 still makes a surface contact when it comes into contact with the junction of the first side 212 and the second side 222.

[0049] Furthermore, such as Figure 4 As shown, the radius of curvature of the first side 212 is greater than or equal to the radius of curvature of the outer surface of the curved section 131, and the radius of curvature of the second side 222 is greater than or equal to the radius of curvature of the outer surface of the curved section 131. If the radii of curvature of the first side 212 and the second side 222 are smaller than the radius of curvature of the outer surface of the curved section 131, when the middle frame 2 deforms and collides with the display module 1, the curved part 112 and the curved section 131 will not be able to be accommodated in the receiving groove formed by the recesses of the first side 212 and the second side 222. The outer surface of the curved section 131 will also not be able to contact the first side 212 and the second side 222. The display module 1 can only contact other parts of the middle frame 2, and the contact method can only be point contact. This undoubtedly increases the risk of damage and failure of the display module. By ensuring that the radii of curvature of the first side 212 and the second side 222 are both greater than or equal to the radius of curvature of the outer surface of the curved section 131, it can be ensured that the curved section 131 and the curved portion 112 can be accommodated in the receiving groove formed by the recesses of the first side 212 and the second side 222 when a collision occurs, and the contact mode between the outer surface of the curved section 131 and the first side 212 and the second side 222 is surface contact, thereby ensuring that the risk of damage and failure of the display module is reduced.

[0050] Preferably, the radius of curvature of the first side 212 is the same as that of the second side 222. This reduces the manufacturing difficulty of the middle frame 2, as the curvatures of the first side 212 and the second side 222 can be obtained simultaneously through a single stamping process. In practical applications, the radius of curvature of the first side 212 and the second side 222 can also be different, as long as they are on the same curved surface and their curvatures are both greater than or equal to the radius of curvature of the outer surface of the bent segment 131.

[0051] In some embodiments, the first step portion 21 and the second step portion 22 partially overlap in a direction perpendicular to the first step surface 211.

[0052] like Figure 4 As shown, the second step portion 22 is disposed on the first step surface 211 of the first step portion 21. The end of the second step portion 22 near the curved portion 112 protrudes from the end of the first step portion 21 near the curved portion 112 in the horizontal direction. This causes the first step portion 21 and the second step portion 22 to partially overlap in the direction perpendicular to the first step surface 211, and the second side surface 222 of the second step portion 22 and the first side surface 212 of the first step portion 21 can form a connected and concave curved surface. This ensures that the outer surface of the curved section 131 contacts the first side surface 212 and the second side surface 222 in a surface contact manner. Therefore, the impact stress generated by the collision between the middle frame 2 and the display module 1 can be effectively reduced, thereby reducing the risk of damage to the display module 1.

[0053] like Figure 6 As shown, Figure 6 The schematic diagram of the relevant dimensions of the display device provided in the embodiment of this application shows that the minimum distance d1 between the side surface of the second protective layer 12 near the second step surface 221 and the second step surface 221 is greater than 0.05 mm. It should be noted that the minimum distance d1 between the side surface of the second protective layer 12 near the second step surface 221 and the second step surface 221 is the distance between the two in the thickness direction of the display device.

[0054] The second protective layer 12 is a glass substrate, and the middle frame 2 is a metal middle frame. If the middle frame 2 and the second protective layer 12 collide and make rigid contact, the middle frame 2, being significantly harder than the second protective layer 12, will damage the second protective layer 12, causing it to shatter. By limiting the minimum distance d1 between the side surface of the second protective layer 12 closest to the second step surface 221 and the second step surface 221 to at least 0.05 mm, sufficient distance can be ensured between the second protective layer 12 and the middle frame 2. This prevents rigid contact between the middle frame 2 and the second protective layer 12 when the frame deforms, thereby reducing the risk of damage to the second protective layer 12 upon impact.

[0055] In some embodiments, the minimum distance d2 between the first step surface 211 and the second step surface 221 is greater than or equal to 0.05 mm.

[0056] It should be noted that, as Figure 4 As shown, the minimum distance d2 between the first step surface 211 and the second step surface 221 is the distance between them in the thickness direction of the display device, that is, the height by which the second step surface 221 protrudes from the first step surface 211. The area of ​​the second side surface 222 depends on the distance between the first step surface 211 and the second step surface 221. By limiting the minimum distance d2 between the first step surface 211 and the second step surface 221 to 0.05 mm or more, it can be ensured that the area of ​​the second step surface 221 is sufficient to ensure that the outer surface of the curved section 131 of the first protective layer 13 is in surface contact with the second step surface 221, thereby ensuring a reduced risk of damage to the display module during drops.

[0057] In some embodiments, the first step portion 21 and the second step portion 22 are made of the same material. Both the first step portion 21 and the second step portion 22 are made of metal, specifically, but not limited to, stainless steel, titanium, or titanium alloy.

[0058] In one embodiment, the first step portion 21 and the second step portion 22 are integrally formed. In the actual manufacturing process, a middle frame 2 containing the first step portion 21 and the second step portion 22 can be formed from a single piece of metal material by stamping.

[0059] like Figure 4 As shown, the display device also includes an adhesive layer 3, which is disposed between the second protective layer 12 and the first step surface 211 and the second step surface 221. The adhesive layer 3 is a frame adhesive or a sealant.

[0060] In one embodiment, the curved portion 112 is disposed in the lower border area BA1, the first step portion 21 is located in the border area BA and is disposed around the display area AA, and the second step portion 22 is disposed in the lower border area BA1.

[0061] Combination Figure 3 and Figure 4 As shown, the display device includes a display area AA and a frame area BA disposed around the display area AA. The lower frame area BA1, the upper frame area BA2, the left frame area BA3, and the right frame area BA4 are each provided with a first step portion 21. That is, the first step portion 21 is disposed in the frame area BA and forms a fully enclosed structure for the display area AA. In the upper frame area BA2, the left frame area BA3, and the right frame area BA4, the adhesive layer 3 is disposed between the end of the second protective layer 12 and the first step portion 21.

[0062] Since the curved portion 112 is located in the lower frame area BA1, the risk of damage caused by collision between the display module 1 and the middle frame 2 in other areas is low. Therefore, the second step portion 22 is only provided in the lower frame area BA1 to reduce the risk of damage caused by collision between the display module 1 and the middle frame 2.

[0063] The beneficial effects of the embodiments of this application are as follows: The embodiments of this application provide a display device, which includes a display module and a middle frame. The display module includes a display panel, and the display panel includes a main body, a curved part, and a binding part. The binding part is disposed on the back side of the main body, and the curved part is connected between the main body and the binding part. By adding a second step to the first step on the side wall of the middle frame and connecting the first side of the first step to the second side of the second step, and setting both the first side and the second side as concave curved surfaces, when the curved part collides with the middle frame, the curved part is in surface contact with both the first side and the second side. This can increase the contact area when the curved part collides with the middle frame, thereby reducing the impact stress when the curved part collides with the middle frame.

[0064] In summary, although the present application discloses the preferred embodiments as described above, the above preferred embodiments are not intended to limit the present application. Those skilled in the art can make various modifications and refinements without departing from the spirit and scope of the present application. Therefore, the scope of protection of the present application is based on the scope defined by the claims.

Claims

1. A display device, characterized in that, include: A display module includes a display panel, the display panel including a main body, a curved part and a binding part, the binding part being disposed on the back side of the main body, and the curved part connecting the main body and the binding part; The display module is located within the middle frame; the middle frame has at least one sidewall near the curved portion. The sidewall includes a first step portion and a second step portion. The second step portion is disposed on the first step portion. The first side of the first step portion facing the curved portion is connected to the second side of the second step portion facing the curved portion. The first side is a curved surface recessed into the first step portion, and the second side is a curved surface recessed into the second step portion. The second step portion has a second step surface connected to the second side, and the plane where the second step surface is located is higher than the plane where the main body portion is located.

2. The display device as claimed in claim 1, characterized in that, The first side and the second side are located on the same curved surface.

3. The display device as claimed in claim 1, characterized in that, The display module further includes a first protective layer, which is disposed at least on the outer surface of the curved portion; Wherein, the radius of curvature of the first side is greater than or equal to the radius of curvature of the outer surface of the curved section of the first protective layer, and the radius of curvature of the second side is greater than or equal to the radius of curvature of the outer surface of the curved section of the first protective layer.

4. The display device as claimed in claim 3, characterized in that, The radius of curvature of the first side is the same as the radius of curvature of the second side.

5. The display device as claimed in claim 1, characterized in that, The first step portion has a first step surface connected to the first side surface, and the second step portion is disposed on the first step surface; The plane containing the first step surface is higher than the plane containing the main body.

6. The display device as claimed in claim 1, characterized in that, The first step portion has a first step surface connected to the first side surface, and the second step portion is disposed on the first step surface; Wherein, the plane containing the first step surface is flush with the plane containing the main body; or, the plane containing the main body is higher than the plane containing the first step surface.

7. The display device as claimed in claim 1, characterized in that, The first step portion has a first step surface connected to the first side surface, the second step portion is disposed on the first step surface, and the display module further includes a second protective layer, which is disposed on the light-emitting side of the main body portion; Wherein, the first step portion and the second step portion partially overlap in a direction perpendicular to the first step surface, one end of the second protective layer is disposed on the first step surface and the second step surface, and the minimum distance between the side surface of the second protective layer near the second step surface and the second step surface is greater than 0.05 mm.

8. The display device as claimed in claim 7, characterized in that, The display device further includes an adhesive layer disposed between the second protective layer and the first step surface and the second step surface.

9. The display device as claimed in claim 7, characterized in that, The minimum distance between the first step surface and the second step surface is greater than or equal to 0.05 mm.

10. The display device as claimed in claim 1, characterized in that, The display module includes a display area and a border area disposed around the display area. The border area includes a lower border area disposed on one side of the display area. The curved portion is disposed in the lower border area. The first step portion is located in the border area and is disposed around the display area. The second step portion is disposed in the lower border area.

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