Display panel, display device and preparation method of display device

Abstract

The application relates to a display panel, a display device and a preparation method of the display device. The display panel comprises a bending area and a non-bending area, the bending area and the non-bending area are arranged along a first direction, the non-bending area comprises a first sub-non-bending area and a second sub-non-bending area, and the first sub-non-bending area is located between the bending area and the second sub-non-bending area. A substrate comprises a first surface and a second surface, the first surface and the second surface are oppositely arranged along the thickness direction of the substrate and are spaced apart, and the substrate is located in the bending area and the non-bending area. A display screen is arranged on one side of the substrate along the thickness direction of the substrate, and the display screen is located in the bending area and the non-bending area. At least one side of the substrate along the thickness direction of the substrate is provided with a groove, the slot of one groove is located on one of the first surface and the second surface, part of the grooves are arranged in the bending area, and the other part of the grooves are arranged in the first sub-non-bending area. The first direction intersects the thickness direction of the substrate. In this way, the service life of the display device can be improved.

Description

Technical Field

[0001] This application relates to the field of display technology, and in particular to a display panel, a display device, and a method for manufacturing the display device. Background Technology

[0002] Foldable phones are gaining popularity among consumers due to their superior folding performance. For display devices with foldable screens, folding them makes them easier to carry and store, while unfolding them provides a larger display area, thus improving the user experience. However, because these devices require frequent folding and unfolding, the folding points of the screen are easily damaged, leading to potential peeling between the various film layers at the folding points. Summary of the Invention

[0003] Therefore, it is necessary to provide a display panel, a display device, and a method for manufacturing the display device that can solve the problem of easy peeling between the film layers at the bending points of the display device.

[0004] In a first aspect, embodiments of this application provide a display panel, which includes a bent area and a non-bent area, arranged along a first direction. The non-bent area includes a first sub-non-bent area and a second sub-non-bent area, with the first sub-non-bent area located between the bent area and the second sub-non-bent area. The display panel includes a substrate and a display screen. The substrate includes a first surface and a second surface, which are opposite to and spaced apart along the thickness direction of the substrate. The substrate is located in the bent area and the non-bent area. The display screen is disposed on one side of the substrate along the thickness direction of the substrate, and is located in the bent area and the non-bent area. A groove is provided on at least one side of the substrate along the thickness direction of the substrate. The opening of one groove is located on one of the first surface and the second surface. A portion of the groove is disposed in the bent area, and another portion is disposed in the first sub-non-bent area. The first direction intersects the thickness direction of the substrate.

[0005] The display panel provided in this application embodiment has a substrate including a first surface and a second surface. The first surface and the second surface are disposed opposite to each other and spaced apart along the thickness direction of the substrate. The substrate is located in a bending region and a non-bending region. A display screen is disposed on one side of the substrate along the thickness direction of the substrate, and the display screen is located in the bending region and the non-bending region. A groove is provided on at least one side of the substrate along the thickness direction of the substrate. The opening of one groove is located on one of the first surface and the second surface. A portion of the groove is disposed in the bending region, and another portion of the groove is disposed in the first non-bending region. The first direction intersects with the thickness direction of the substrate. Thus, both the substrate and the display screen are located in the bending region and the non-bending region of the display panel, and the display screen is disposed on one side of the substrate along the thickness direction of the substrate. Since the substrate has a groove on at least one side along the thickness direction of the substrate, and the groove opening is located on one of the first surface and the second surface, with part of the groove located in the bending area and another part of the groove located in the first non-bending area, the compressive stress between the substrate and the display screen can be reduced during the bending process of the display panel. This reduces the stress on the substrate and the display screen during the bending process, thereby reducing the misalignment and peeling between the film layers at the bending point of the display panel and improving the service life of the display panel.

[0006] In one embodiment, the bending region has a bending center line that is perpendicular to the substrate and passes through a groove.

[0007] Optionally, the grooves are arranged symmetrically along the center line of the bend.

[0008] In one embodiment, the sum of the dimension of the bending region along the first direction and the dimension of the first non-bending region along the first direction is L1, and the dimension of the bending region along the first direction is L2;

[0009] Where 1.2≤L1 / L2≤1.8;

[0010] Optionally, the dimension of the groove along the thickness direction of the substrate is L3, and the dimension of the substrate along the thickness direction of the substrate is L4.

[0011] Where 0.3≤L3 / L4≤0.5;

[0012] Optionally, on the same side of the substrate along the thickness direction, there is one groove; the groove depth gradually decreases from the center to the edge of the bending area along the first direction; or;

[0013] On the same side of the substrate along the thickness direction, there are multiple grooves; from the center of the bending area to the edge in the first direction, the maximum groove depth of each groove decreases sequentially.

[0014] In one embodiment, there are multiple grooves on the same side of the substrate along the thickness direction;

[0015] Optionally, at least a portion of the grooves have different dimensions along the first direction;

[0016] Optionally, from the bending area to the non-bending area, the dimensions of the multiple grooves gradually increase or decrease along the first direction;

[0017] Optionally, on the same side of the substrate along the thickness direction, a plurality of grooves include a first groove and a second groove, the first groove being disposed in the bending area; a portion of the second groove is disposed in the bending area, and the remaining portion of the second groove is disposed in the first non-bending area;

[0018] Optionally, the dimension of the second groove in the first non-bending area along the first direction is equal to the dimension of the first non-bending area along the first direction.

[0019] In one embodiment, the openings of all the grooves are located on the first surface; or,

[0020] All grooves are located on the second surface.

[0021] In one embodiment, there are multiple grooves, with the openings of a portion of the grooves disposed on a first surface and the openings of another portion of the grooves disposed on a second surface;

[0022] Optionally, along the thickness direction of the substrate, the projections of the grooves on the first surface and the grooves on the second surface on the substrate at least partially overlap; or

[0023] A number of grooves on the first surface and another number of grooves on the second surface are offset along the thickness direction of the substrate.

[0024] In one embodiment, the display panel further includes:

[0025] A filler is disposed in the groove; the elastic modulus of the substrate is greater than that of the filler.

[0026] In one embodiment, the display panel further includes:

[0027] The support component is located on the side of the substrate away from the display screen;

[0028] Optionally, the elastic modulus of the support member is greater than that of the substrate.

[0029] Optionally, the display panel may also include:

[0030] A cover plate is located on the side of the display screen away from the substrate;

[0031] Optionally, the elastic modulus of the cover plate is greater than that of the substrate.

[0032] Optionally, the elastic modulus of the support member is greater than that of the cover plate.

[0033] Secondly, embodiments of this application provide a display device, including a display panel.

[0034] The display device provided in this application includes a display panel. A substrate includes a first surface and a second surface, which are disposed opposite to and spaced apart along the thickness direction of the substrate. The substrate is located in a bending region and a non-bending region. A display screen is disposed on one side of the substrate along the thickness direction, and is located in both the bending and non-bending regions. A groove is provided on at least one side of the substrate along the thickness direction. The opening of one groove is located on one of the first and second surfaces. A portion of the groove is located in the bending region, and another portion is located in the first non-bending region. The first direction intersects the thickness direction of the substrate. Thus, both the substrate and the display screen are located in the bending and non-bending regions of the display panel, and the display screen is disposed on one side of the substrate along the thickness direction. Because the substrate has a groove on at least one side along the thickness direction of the substrate, and the opening of the groove is located on one of the first surface and the second surface, with part of the groove located in the bending area and another part located in the first non-bending area, the groove can reduce the compressive stress between the substrate and the display screen during the bending process of the display panel. This reduces the stress on the substrate and the display screen during the bending process, thereby reducing the misalignment and peeling between the film layers at the bending point of the display panel. Ultimately, this reduces the misalignment and peeling between the film layers at the bending point of the display device, and improves the service life of the display device.

[0035] Thirdly, embodiments of this application provide a method for manufacturing a display device, used to manufacture the display device, the display device including a display panel, the display panel including a bending region and a non-bending region, the bending region and the non-bending region being arranged along a first direction, the non-bending region including a first sub-non-bending region and a second sub-non-bending region, the first sub-non-bending region being located between the bending region and the second non-bending region; the method for manufacturing the display device includes:

[0036] Provide a support member, with a protrusion formed on one side of the support member;

[0037] A substrate is formed on the side of the support member facing the protrusion; the substrate includes a first surface and a second surface, the first surface and the second surface are disposed opposite to each other and spaced apart along the thickness direction of the substrate, and the substrate is located in the bending area and the non-bending area.

[0038] A groove matching the protrusion is formed on the side of the substrate facing the protrusion; the opening of the groove is located on one of the first surface and the second surface, part of the groove is disposed in the bending area, and another part of the groove is disposed in the first non-bending area, and the first direction intersects with the thickness direction of the substrate.

[0039] Remove the support components and protrusions to expose the grooves;

[0040] A display screen is formed on the side of the substrate away from the groove, and the display screen is located in the bending area and the non-bending area.

[0041] The method for manufacturing a display device provided in this application embodiment is used to manufacture a display device, which includes a display panel and a substrate including a first surface and a second surface. The first surface and the second surface are disposed opposite to each other and spaced apart along the thickness direction of the substrate, and the substrate is located in a bending region and a non-bending region. A display screen is disposed on one side of the substrate along the thickness direction of the substrate, and the display screen is located in the bending region and the non-bending region. A groove is provided on at least one side of the substrate along the thickness direction of the substrate. The opening of one groove is located on one of the first surface and the second surface. A portion of the groove is disposed in the bending region, and another portion of the groove is disposed in the first non-bending region. The first direction intersects the thickness direction of the substrate. Thus, both the substrate and the display screen are located in the bending region and the non-bending region of the display panel, and the display screen is disposed on one side of the substrate along the thickness direction of the substrate. Because the substrate has a groove on at least one side along its thickness direction, with the groove opening located on one of the first and second surfaces, and part of the groove located in the bending area and the other part located in the first non-bending area, the compressive stress between the substrate and the display screen can be reduced during the bending process of the display panel. This reduces the stress on the substrate and the display screen during bending, thereby reducing the misalignment and peeling between the film layers at the bending point of the display panel, improving the service life of the display panel, and ultimately reducing the misalignment and peeling between the film layers at the bending point of the display device, thus improving the service life of the display device. Attached Figure Description

[0042] To more clearly illustrate the technical solutions in the embodiments or exemplary embodiments of this application, the drawings used in the description of the embodiments or exemplary embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0043] Figure 1 This is a schematic diagram of the structure of a display panel provided in one embodiment of this application.

[0044] Figure 2 for Figure 1 A bottom view of the central display panel.

[0045] Figure 3 This is a schematic diagram of another structure of a display panel provided in an embodiment of this application.

[0046] Figure 4This is a schematic diagram of the structure of a display panel in a folded state according to an embodiment of this application.

[0047] Figure 5 This is a schematic diagram of another structure of a display panel provided in one embodiment of this application.

[0048] Figure 6 This is a schematic diagram of another structure of a display panel provided in an embodiment of this application.

[0049] Figure 7 This is a schematic diagram of another structure of a display panel provided in one embodiment of this application.

[0050] Figure 8 This is a schematic diagram of another structure of a display panel provided in one embodiment of this application.

[0051] Figure 9 This is a schematic diagram of another structure of a display panel provided in an embodiment of this application.

[0052] Figure 10 This is a schematic diagram of another structure of a display panel provided in an embodiment of this application.

[0053] Figure 11 This is a schematic diagram of the structure of a display device provided in an embodiment of this application.

[0054] Figure 12 A flowchart illustrating a method for manufacturing a display device according to an embodiment of this application.

[0055] Figure 13 This is a schematic diagram of the structure of the support member and protrusion provided during the manufacturing process of a display device according to an embodiment of this application.

[0056] Figure 14 This is a schematic diagram of the structure in which a substrate is formed on the side of the carrier facing the protrusion during the fabrication process of a display device provided in an embodiment of this application.

[0057] Figure 15 This is a schematic diagram of the structure for removing the support member and protrusion during the manufacturing process of a display device provided in an embodiment of this application.

[0058] Figure 16 This is a schematic diagram of the structure in which a display screen is formed on the side of the substrate away from the groove during the fabrication process of a display device provided in an embodiment of this application.

[0059] Explanation of reference numerals in the attached figures:

[0060] 100. Display device; 10. Display panel; 10a. Bending area; 10b. Non-bending area; 10b1. First sub-non-bending area; 10b2. Second sub-non-bending area; 20. Substrate; 20a. First surface; 20b. Second surface; 21. Groove; 21a. Slot; 211. First groove; 212. Second groove; 30. Display screen; 40. Filler; 50. Support; 60. Cover plate; 70. Bearing member; 80. Protrusion;

[0061] AA, the center line of the bend. Detailed Implementation

[0062] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings. Preferred embodiments of this application are shown in the drawings. However, this application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure of this application.

[0063] It should be understood that although the terms “first,” “second,” etc., may be used herein to describe various elements, this does not indicate any order, quantity, or importance, but is merely used to distinguish different components. These terms are used only to distinguish one element from another. For example, without departing from the scope of this application, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element. Words such as “comprising” or “including” mean that the element or object preceding the word covers the element or object listed after the word and its equivalents, without excluding other elements or objects.

[0064] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the specification of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0065] Currently, foldable phones are gaining popularity among consumers due to their superior folding performance. For display devices with foldable screens, folding them makes them easier to carry and store, while unfolding them provides a larger display area, thus improving the user experience. However, because these devices require frequent folding and unfolding, the folding points of the screen are easily damaged, leading to potential peeling between the various film layers at the folding points.

[0066] It should be noted that the display panel and display device in this application are both display structures with folding function.

[0067] Based on the above research, the applicant discovered that in related technologies, display devices with folding functions include a foldable display panel and a support component for supporting the display panel. The display panel includes bending and non-bending areas. On one hand, the support component provides stable mechanical support for the folding and unfolding of the display panel, ensuring a smooth folding process and reducing damage to the display panel. For example, a common hinge structure is an important component of the support component, connecting different parts of the display panel so that the display panel can be folded and unfolded according to the design. On the other hand, in the folded state, the support component protects the display panel from damage such as external pressure, preventing creases and breakage.

[0068] In addition, it should be noted that the display panel and the support can be directly connected, or other film layers can be set in the display panel and the support to achieve indirect connection between the display panel and the support.

[0069] In the process of folding or unfolding the display device in the related technology, since the bending areas of the support and the display panel are both located at the bending points of the display device, on the one hand, the support is affected by its own structure and shape, and on the other hand, the support and the display panel are made of different materials. Due to the influence of the contact area between the support and the display panel, the stress of the support is relatively large during the bending process, which can easily lead to misalignment and separation between the support and the display panel in the display device.

[0070] Furthermore, in related technologies, by slotting the support member on the side away from the display panel, the stress on the support member during bending is reduced, thereby reducing misalignment and peeling between the various film layers of the support member and the display panel in the display device.

[0071] However, the inventors also discovered that while slotting the support on the side away from the display panel can reduce the stress on the support during bending, the display panel also contains multiple film layers. These multiple film layers are affected by the contact between them during folding or unfolding, resulting in significant stress. This makes it easy for the film layers in the display panel to shift and peel off. Furthermore, the shifting and peeling of the film layers in the display panel will also affect the relationship between the display panel and the support, ultimately causing the same shifting and peeling between the display panel and the support.

[0072] The inventors continued their research and discovered that, in order to reduce the misalignment and peeling between the various film layers of the display panel, the related technologies also considered methods to solve the misalignment and peeling between the support and the various film layers of the display panel. By slotting the substrate in the display panel, the stress between the film layers during the bending process of the display panel is reduced, thereby reducing the misalignment and peeling between the film layers of the display panel, and ultimately reducing the misalignment and peeling between the support and the various film layers of the display panel in the display device.

[0073] However, research on related technologies has revealed that the grooves created on the substrate in these technologies are only designed for the bending area of ​​the display panel. This reduces stress between the film layers during bending, thus minimizing misalignment and peeling. However, the deformation of the bending area also affects the non-bending areas, especially in the region adjacent to the bending and non-bending areas. Therefore, the stress generated during bending in these technologies is concentrated in the area adjacent to the bending and non-bending areas, making misalignment and peeling of the film layers still likely, thus affecting the normal operation of the display device.

[0074] Firstly, referring to Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, this application embodiment provides a display panel 10, which includes a bent area 10a and a non-bent area 10b. The bent area 10a and the non-bent area 10b are arranged along a first direction. The non-bent area 10b includes a first sub-non-bent area 10b1 and a second sub-non-bent area 10b2, with the first sub-non-bent area 10b1 located between the bent area 10a and the second sub-non-bent area 10b2. The display panel 10 includes a substrate 20 and a display screen 30. The substrate 20 includes a first surface 20a and a second surface 20b, which are opposite to and spaced apart along the thickness direction of the substrate 20. The substrate 20 is located in the bent area 10a and the non-bent area 10b. The display screen 30 is disposed on one side of the substrate 20 along the thickness direction of the substrate 20, and the display screen 30 is located in the bent area 10a and the non-bent area 10b. The substrate 20 has a groove 21 on at least one side along the thickness direction of the substrate 20. The groove opening 21a of the groove 21 is located on one of the first surface 20a and the second surface 20b. Part of the groove 21 is disposed in the bending area 10a, and another part of the groove 21 is disposed in the first non-bending area 10b1. The first direction intersects with the thickness direction of the substrate 20.

[0075] The display panel 10 provided in this embodiment includes a substrate 20 comprising a first surface 20a and a second surface 20b. The first surface 20a and the second surface 20b are disposed opposite to each other and spaced apart along the thickness direction of the substrate 20. The substrate 20 is located in a bending region 10a and a non-bending region 10b. A display screen 30 is disposed on one side of the substrate 20 along the thickness direction, and the display screen 30 is located in the bending region 10a and the non-bending region 10b. A groove 21 is provided on at least one side of the substrate 20 along the thickness direction. The opening 21a of one groove 21 is located on one of the first surface 20a and the second surface 20b. A portion of the groove 21 is disposed in the bending region 10a, and another portion of the groove 21 is disposed in the first non-bending region 10b1. The first direction intersects with the thickness direction of the substrate 20. Thus, both the substrate 20 and the display screen 30 are located in the bending region 10a and the non-bending region 10b of the display panel 10, and the display screen 30 is disposed on one side of the substrate 20 along the thickness direction. Since the substrate 20 has a groove 21 on at least one side along the thickness direction of the substrate 20, and the groove opening 21a of the groove 21 is located on one of the first surface 20a and the second surface 20b, part of the groove 21 is located in the bending area 10a and another part of the groove 21 is located in the first non-bending area 10b1, the compressive stress between the substrate 20 and the display screen 30 can be reduced through the groove 21 during the bending process of the display panel 10. This can reduce the stress on the substrate 20 and the display screen 30 during the bending process, thereby reducing the misalignment and peeling between the film layers at the bending point of the display panel 10 and improving the service life of the display panel 10.

[0076] It should be noted that the first direction is Figure 1 In the X direction, the thickness direction of the substrate 20 is... Figure 1 in the Y direction.

[0077] It should be further explained that the display panel 10 includes a bending area 10a and a non-bending area 10b. The bending area 10a is the area in the display panel 10 used for folding or unfolding, thereby realizing the folding or unfolding of the display panel 10. The non-bending area 10b is the main display area in the display panel 10, thereby displaying the content required by the user and facilitating the user's use.

[0078] Since the non-bending region 10b includes a first sub-non-bending region 10b1 and a second sub-non-bending region 10b2, and the first sub-non-bending region 10b1 is located between the bending region 10a and the second sub-non-bending region 10b2, that is, the first sub-non-bending region 10b1 is located between the bending region 10a and the second sub-non-bending region 10b2, that is, the first sub-non-bending region 10b1 is an adjacent area between the bending region 10a and the second sub-non-bending region 10b2. It can be understood that during the bending process of the bending region 10a, since the first sub-non-bending region 10b1 is adjacent to the bending region 10a, the stress generated by the bending region 10a will also act on the first sub-non-bending region 10b1, thereby affecting the stress between the film layers in the first sub-non-bending region 10b1.

[0079] Specifically, a groove 21 is provided on at least one side of the substrate 20 along the thickness direction of the substrate 20. The groove opening 21a of one groove 21 is located on one of the first surface 20a and the second surface 20b. Part of the groove 21 is provided in the bending area 10a, and another part of the groove 21 is provided in the first non-bending area 10b1. Thus, during the bending process of the display panel 10, on the one hand, since part of the groove 21 is provided in the bending area 10a, the compressive stress between the substrate 20 and the display screen 30 can be reduced by the part of the groove 21 provided in the bending area 10a. The stress on the substrate 20 and the display screen 30 located in the bending area 10a during the bending process can be reduced, thereby reducing the misalignment and peeling between the film layers at the bending point of the display panel 10 located in the bending area 10a.

[0080] On the other hand, since another portion of the groove 21 is provided in the first sub-non-bending area 10b1, the compressive stress between the substrate 20 and the display screen 30 can be reduced by the portion of the groove 21 provided in the first sub-non-bending area 10b1. This can reduce the stress on the substrate 20 and the display screen 30 located in the first sub-non-bending area 10b1 during the bending process, thereby reducing the misalignment and peeling between the film layers at the bending point of the display panel 10 located in the first sub-non-bending area 10b1.

[0081] Based on the above description, this application provides a portion of the groove 21 in the bending area 10a and another portion of the groove 21 in the first sub-non-bending area 10b1, thereby reducing the stress on the substrate 20 and display screen 30 located in the bending area 10a and the first sub-non-bending area 10b1 during the bending process, and further reducing the misalignment and peeling between the film layers at the bending point of the display panel 10.

[0082] Furthermore, because this application reduces the misalignment and peeling between the film layers at the bending points of the display panel 10, it can prevent problems such as pixel displacement and electrode deformation caused by film layer misalignment and peeling. This ensures that the displayed image remains clear and stable, avoiding distortion, flickering, and uneven color, thus providing users with a high-quality visual experience. In addition, the display panel 10 maintains good performance even after long-term use involving frequent bending or unfolding, and is less prone to failure due to structural damage, thereby improving the durability and lifespan of the display panel 10.

[0083] In one embodiment, see [reference] Figure 5 As shown, the bending region 10a has a bending center line, which is perpendicular to the substrate 20 and passes through the groove 21.

[0084] It should be noted that, Figure 5 AA in the diagram represents the center line of the bend.

[0085] Thus, since the bending center line is perpendicular to the substrate 20 and passes through the groove 21 (i.e., the groove 21 is set along the bending center line), it can guide the stress distribution of the display panel 10 during folding or unfolding. When the display panel 10 is bent by external force, the stress can be evenly distributed along both sides of the bending center line, avoiding stress concentration in a certain area. This reduces the misalignment and peeling phenomena between the film layers in the display panel 10 caused by uneven stress, further reducing the misalignment and peeling between the film layers at the bending point of the display panel 10 and improving the structural stability of the bending point of the display panel 10.

[0086] In one embodiment, the groove 21 is symmetrically arranged along the bending center line.

[0087] Thus, during the folding or unfolding process of the display panel 10, the symmetrically arranged grooves 21 can distribute the stress evenly on both sides of the bending center line, so that the stress on both sides of the bending area 10a is similar in magnitude and direction, thereby avoiding stress concentration on one side and preventing excessive deformation, film layer misalignment and peeling on one side, ensuring that the overall bending performance of the display panel 10 is stable and consistent.

[0088] Furthermore, during the manufacturing process, the symmetrical grooves 21 facilitate the use of a unified processing technology and molds for production. Whether it is photolithography, etching, or other forming processes, the same parameters and operating procedures can be used for symmetrical structures, without the need for individual adjustments to different sides. This simplifies the manufacturing process, improves production efficiency, and reduces production costs.

[0089] It should be noted that this application does not limit or elaborate on the specific preparation method of the groove 21.

[0090] In one embodiment, the sum of the dimension of the bending region 10a along the first direction and the dimension of the first non-bending region 10b1 along the first direction is L1, and the dimension of the bending region 10a along the first direction is L2; ​​wherein, 1.2≤L1 / L2≤1.8.

[0091] Thus, when the display panel 10 is bent, the groove 21 located in the bending area 10a can directly disperse the stress in the bending area 10a, and the groove 21 located in the first sub-non-bending area 10b1 can directly disperse the stress in the first sub-non-bending area 10b1. This can reduce the stress on the substrate 20 and the display screen 30 located in the bending area 10a and the first sub-non-bending area 10b1 during the bending process, thereby reducing the misalignment and peeling between the film layers at the bending point of the display panel 10.

[0092] Meanwhile, if L1 / L2 is too small, it means that the size of the bending area 10a is relatively too large, making it difficult for the groove 21 to reduce the stress between the film layers located in the first sub-non-bending area 10b1, thus leading to a higher risk of misalignment and peeling between the film layers located in the first sub-non-bending area 10b1. Similarly, if L1 / L2 is too large, it means that the size of the bending area 10a is relatively too small, making it difficult for the groove 21 to reduce the stress between the film layers located in the bending area 10a, thus leading to a higher risk of misalignment and peeling between the film layers located in the bending area 10a. Since 1.2≤L1 / L2≤1.8, the risk of misalignment and peeling between the film layers located in the bending area 10a and the first sub-non-bending area 10b1 can be reduced simultaneously, further reducing the risk of misalignment and peeling between the film layers at the bending point of the display panel 10.

[0093] In one embodiment, the groove 21 has a dimension of L3 along the thickness direction of the substrate 20, and the substrate 20 has a dimension of L4 along the thickness direction of the substrate 20; wherein, 0.3≤L3 / L4≤0.5.

[0094] Thus, since 0.3≤L3 / L4≤0.5, during the bending process of the display panel 10, the substrate 20 can have better flexibility in the bending area 10a and the first non-bending area 10b1, making it easier for the substrate 20 to bend and deform, reducing stress concentration caused by excessive rigidity, thereby reducing the risk of misalignment and peeling between the film layers at the bending point of the display panel 10, and improving the bending performance of the display panel 10.

[0095] In one embodiment, there is one groove 21 on the same side of the substrate 20 along the thickness direction; the groove depth of the groove 21 gradually decreases from the center to the edge of the bending region 10a along the first direction.

[0096] Thus, since there is only one groove 21, i.e., a single groove 21 is provided on the same side of the substrate 20, the process is simpler compared to processing multiple grooves 21. This reduces the alignment and precision control requirements in photolithography, etching, and other process steps, lowers the processing difficulty, and improves production efficiency. At the same time, the design of a single groove 21 also reduces process errors caused by improper control of the spacing and depth between multiple grooves 21, which is beneficial to improving product consistency and yield.

[0097] Furthermore, since the groove depth of the groove 21 gradually decreases from the center to the edge along the first direction of the bending area 10a, that is, the groove depth is deeper at the bending center, which can withstand and disperse greater stress; at the bending edge, the groove depth gradually becomes shallower, and the stress release and buffering effect gradually weakens. This matches the situation where the stress at the edge of the display panel 10 is relatively small during the bending process, which can make the stress reduction of the entire substrate 20 during bending more uniform. This can further reduce the misalignment and peeling between the film layers at the bending point of the display panel 10 and improve the service life of the display panel 10.

[0098] In one embodiment, there are multiple grooves 21 on the same side of the substrate 20 along the thickness direction; the maximum groove depth of each groove 21 decreases sequentially from the center to the edge of the bending region 10a along the first direction.

[0099] Thus, since there are multiple grooves 21, the stress generated between the film layers at different positions can be guided and dispersed through the multiple grooves 21, which can further reduce the compressive stress between the substrate 20 and the display screen 30, and further reduce the stress on the substrate 20 and the display screen 30 during bending.

[0100] Similarly, since the maximum groove depth of each groove 21 decreases sequentially from the center to the edge of the bending area 10a along the first direction, that is, the groove depth is deeper at the bending center, which can withstand and disperse greater stress; at the bending edge, the groove depth gradually becomes shallower, and the stress release and buffering effect gradually weakens. This matches the situation where the stress at the edge of the display panel 10 is relatively small during the bending process, which can make the stress reduction of the entire substrate 20 during bending more uniform, thereby further reducing the misalignment and peeling between the film layers at the bending point of the display panel 10 and improving the service life of the display panel 10.

[0101] In one embodiment, there are multiple grooves 21 on the same side of the substrate 20 along the thickness direction.

[0102] Thus, during the folding or unfolding process of the display panel 10, stress will concentrate in certain areas, and the multiple grooves 21 can disperse this concentrated stress to different locations. Because each groove 21 can serve as a stress release point, stress can be released at multiple points, avoiding excessive stress concentration in one place, thereby further reducing the risk of misalignment and peeling between the film layers at the bending point of the display panel 10.

[0103] In one embodiment, at least a portion of the grooves 21 have different dimensions along the first direction.

[0104] Thus, during the folding or unfolding process, the stress distribution in different areas of the display panel 10 is uneven. For example, the stress is greater at the center of the bending area 10a, while the stress is relatively smaller at the edges. By providing grooves 21 with different dimensions along the first direction, the size of the grooves 21 can be matched to the stress magnitude in each area. In areas with higher stress, larger grooves 21 can provide more space to accommodate and disperse the stress; in areas with lower stress, smaller grooves 21 can meet the stress release requirements without excessively weakening the substrate 20 structure. This allows for more precise adaptation to stress changes in different areas of the display panel 10, effectively reducing stress concentration between film layers.

[0105] In one embodiment, the dimensions of the plurality of grooves 21 gradually increase or decrease along the first direction from the bending region 10a to the non-bending region 10b.

[0106] Thus, during the folding or unfolding process of the display panel 10, the stress is greatest in the bending area 10a, and gradually decreases from the bending area 10a to the non-bending area 10b. When the size of the groove 21 gradually increases or decreases along the first direction, it can match this trend of stress change. If the size gradually increases, in the bending area 10a where the stress is high, the smaller groove 21 can initially disperse the stress. As it transitions to the non-bending area 10b, the size of the groove 21 gradually increases, further dispersing the gradually decreasing stress, making the stress more evenly distributed throughout the area, and further reducing the risk of misalignment and peeling between the film layers at the bending point of the display panel 10.

[0107] In one embodiment, see [reference] Figure 6 As shown, on the same side of the substrate 20 along the thickness direction, a plurality of grooves 21 include a first groove 211 and a second groove 212. The first groove 211 is disposed in the bending region 10a; a portion of the second groove 212 is disposed in the bending region 10a, and the remaining portion of the second groove 212 is disposed in the first non-bending region 10b1.

[0108] Thus, on the one hand, since the first groove 211 is provided in the bending area 10a, the compressive stress between the substrate 20 and the display screen 30 can be reduced by the first groove 211 provided in the bending area 10a. This can reduce the stress on the substrate 20 and the display screen 30 in the bending area 10a during the bending process, and further reduce the misalignment and peeling between the film layers at the bending point of the display panel 10 in the bending area 10a.

[0109] On the other hand, since the remaining portion of the second groove 212 is provided in the first sub-non-bending area 10b1, the compressive stress between the substrate 20 and the display screen 30 can be reduced by the portion of the second groove 212 provided in the first sub-non-bending area 10b1. This can reduce the stress on the substrate 20 and the display screen 30 located in the first sub-non-bending area 10b1 during bending, and further reduce the misalignment and peeling between the film layers at the bending point of the display panel 10 located in the first sub-non-bending area 10b1.

[0110] In one embodiment, the dimension of the second groove 212 located in the first non-bending region 10b1 along the first direction is equal to the dimension of the first non-bending region 10b1 along the first direction.

[0111] Thus, since the size of the second groove 212 located in the first non-bending area 10b1 along the first direction is equal to the size of the first non-bending area 10b1 along the first direction, that is, the second groove 212 completely overlaps with the first non-bending area 10b1 along the first direction, the stress between the film layers in the first non-bending area 10b1 can be completely released through the second groove 212 during the folding or unfolding process of the display panel 10, thereby further reducing the misalignment and peeling between the film layers at the bending point of the display panel 10 located in the first non-bending area 10b1.

[0112] In one embodiment, see [reference] Figure 7 As shown, the slots 21a of all the grooves 21 are provided on the first surface 20a.

[0113] Thus, since the slots 21a of all the grooves 21 are provided on the first surface 20a, the stress between the first surface 20a of the substrate 20 and the film layer in contact with it can be further reduced during the folding or unfolding of the display panel 10, thereby further reducing the misalignment and peeling between the first surface 20a of the substrate 20 and the film layer in contact with it.

[0114] In one embodiment, the slots 21a of all the grooves 21 are provided on the second surface 20b.

[0115] Thus, since the slots 21a of all the grooves 21 are located on the second surface 20b, the stress between the second surface 20b of the substrate 20 and the film layer in contact with it can be further reduced during the folding or unfolding of the display panel 10. This further reduces the misalignment and peeling between the first surface 20a of the substrate 20 and the film layer in contact with it.

[0116] In one embodiment, see [reference] Figure 8 As shown, there are multiple grooves 21. The openings 21a of a portion of the grooves 21 are located on the first surface 20a, while the openings 21a of another portion of the grooves 21 are located on the second surface 20b.

[0117] Thus, since a portion of the grooves 21 have openings 21a on the first surface 20a and another portion have openings 21a on the second surface 20b, the stress between the first surface 20a of the substrate 20 and the film layer it contacts can be reduced by the portion of the grooves 21 provided on the first surface 20a, thereby further reducing misalignment and peeling between the first surface 20a of the substrate 20 and the film layer it contacts. Simultaneously, the stress between the second surface 20b of the substrate 20 and the film layer it contacts can be reduced by the other portion of the grooves 21 provided on the second surface 20b, thereby further reducing misalignment and peeling between the first surface 20a of the substrate 20 and the film layer it contacts. Based on the above description, it can be seen that by reducing the misalignment and peeling between the film layers at the bending points of the display panel 10 by the portion of the grooves 21 provided on the first surface 20a and the other portion of the grooves 21 provided on the second surface 20b, the service life of the display panel 10 can be improved.

[0118] In one embodiment, along the thickness direction of the substrate 20, the projection of the groove 21 disposed on the first surface 20a onto the substrate 20 at least partially overlaps with the projection of the groove 21 disposed on the second surface 20b onto the substrate 20.

[0119] Thus, when the display panel 10 is folded, for example, the first surface 20a is compressed and the second surface 20b is stretched. Since the projections of the grooves 21 on the first surface 20a onto the substrate 20 and the projections of the grooves 21 on the second surface 20b onto the substrate 20 at least partially overlap, the overlapping grooves 21 can make the stress transmission on both sides more balanced. When the grooves 21 on the first surface 20a are deformed by pressure, part of the stress is transferred to the grooves 21 on the second surface 20b through the overlapping area, so that the second surface 20b can also share part of the compressive stress while being stretched, avoiding excessive stress on one side, thereby balancing the stress distribution on both sides of the substrate 20, reducing the torsional and deformation stress caused by excessive stress difference between the two sides of each film layer, further reducing the misalignment and peeling between the film layers at the bending point of the display panel 10, and improving the service life of the display panel 10.

[0120] In one embodiment, a number of grooves 21 provided on the first surface 20a and another number of grooves 21 provided on the second surface 20b are staggered along the thickness direction of the substrate 20.

[0121] Thus, when the display panel 10 is folded, because a portion of the grooves 21 on the first surface 20a and another portion of the grooves 21 on the second surface 20b are misaligned along the thickness direction of the substrate 20, the stress transmission is no longer limited to a straight path but forms a tortuous transmission path. This allows the stress to be more evenly distributed within the substrate 20, preventing stress concentration at certain locations or on certain film layers. For example, when the grooves 21 on the first surface 20a are under pressure, a portion of the stress is transmitted through the substrate 20 to the misaligned grooves 21 on the second surface 20b, and then diffuses from the grooves 21 on the second surface 20b to the surrounding area, thereby expanding the stress distribution range and reducing the local stress between the film layers. This further reduces the misalignment and peeling between the film layers at the bending point of the display panel 10, and can improve the service life of the display panel 10.

[0122] In one embodiment, see [reference] Figure 9 As shown, the display panel 10 also includes a filler 40. The filler 40 is disposed in the groove 21; the elastic modulus of the substrate 20 is greater than the elastic modulus of the filler 40.

[0123] Thus, when the display panel 10 is folded, the bent portion of the substrate 20 will be subjected to significant pressure. Because the substrate 20 has a high elastic modulus and relatively small deformation, while the filler 40 has a low elastic modulus and is more prone to deformation, the filler 40 can act as a buffer within the groove 21. The filler 40 can absorb some of the pressure generated when the substrate 20 is bent, reducing the pressure transmitted from the substrate 20 to each film layer. This reduces the stress generated between the film layers due to compression, thereby lowering the risk of misalignment and peeling between the film layers at the bent portion of the display panel 10.

[0124] In one embodiment, see [reference] Figure 10 As shown, the display panel 10 also includes a support member 50. The support member 50 is disposed on the side of the substrate 20 opposite to the display screen 30.

[0125] Thus, the support member 50 can enhance the overall mechanical strength of the display panel 10 and prevent the substrate 20 from bending, deforming or being damaged excessively when subjected to external forces. Especially for large-sized display panels 10 or foldable and flexible display panels 10, the support member 50 can help maintain the shape of the substrate 20, ensuring that the display panel 10 maintains a stable structure in various usage scenarios, thereby protecting the internal display screen 30 and other functional film layers from damage.

[0126] In one embodiment, the elastic modulus of the support 50 is greater than that of the substrate 20.

[0127] Thus, when the display panel 10 is folded, the support member 50 has a large elastic modulus and is relatively more difficult to deform. It will play a certain role in limiting the degree of folding of the substrate 20 and prevent the substrate 20 from being over-bent. This helps to avoid damage to the internal circuits, film layers and other structures of the substrate 20 due to excessive bending, and can protect the functional integrity of the display panel 10.

[0128] In addition, the support member 50, with its high elastic modulus, can maintain the folded shape of the display panel 10 after folding, and can provide sufficient support to keep the fold stable. It will not easily change the folded state due to slight changes in external force or its own elastic recovery, which is conducive to improving the reliability and stability of the display panel 10 after folding.

[0129] In one embodiment, see [reference] Figure 3 As shown, the display panel 10 also includes a cover plate 60. The cover plate 60 is disposed on the side of the display screen 30 opposite to the substrate 20.

[0130] Thus, the cover plate 60 can act as the first line of defense for the display screen 30, effectively preventing sharp objects from scratching the surface of the display screen 30. In daily use, foldable electronic devices such as mobile phones and tablets may be placed together with sharp objects such as keys and coins. The cover plate 60 can prevent these objects from directly contacting the display screen 30, thereby maintaining the integrity of the display screen 30 and its display effect.

[0131] Meanwhile, the display panel 10 may be subjected to external impacts during folding and unfolding, as well as during use. The cover plate 60 can absorb and disperse these impacts, reducing the direct impact on the display screen 30 and lowering the risk of the display screen 30 cracking or being damaged due to impact.

[0132] In one embodiment, the elastic modulus of the cover plate 60 is greater than that of the substrate 20.

[0133] Thus, the cover plate 60, with its high elastic modulus, provides more stable structural support during folding. Its rigidity guides the display panel 10 to fold along a pre-set path and angle, reducing uncertainty and deviation during the folding process and improving folding precision and consistency. Simultaneously, due to its high elastic modulus, the cover plate 60 is not easily deformed and can withstand greater external forces during folding, providing reliable protection for the underlying display screen 30 and substrate 20, reducing the risk of damage to internal film layers and circuits caused by compression, torsion, and other external forces generated during folding.

[0134] In one embodiment, the elastic modulus of the support 50 is greater than that of the cover plate 60.

[0135] Thus, the support member 50 has a relatively high elastic modulus, providing strong support during folding, limiting excessive bending of the substrate 20, ensuring the folding radius remains within a reasonable range, and preventing damage to the internal structure due to excessive folding. Meanwhile, the cover plate 60 has a relatively low elastic modulus and a certain degree of flexibility, allowing it to better conform to the folding curve. Working in conjunction with the support member 50, it ensures more even stress distribution across the display panel 10 during folding, reducing problems such as damage to the display screen 30 or film separation caused by stress concentration.

[0136] Furthermore, the support member 50 and the cover plate 60 work together to form a double protection for the display screen 30. The support member 50 bears the main folding stress from the substrate 20 side, while the cover plate 60 resists possible friction and collisions from the outside of the display screen 30, preventing external objects from scratching or damaging the display screen 30 during the folding process, and improving the reliability and durability of the display panel 10.

[0137] Secondly, see Figure 11 As shown, this application embodiment provides a display device 100, including a display panel 10.

[0138] The display device 100 provided in this application embodiment includes a display panel 10. A substrate 20 includes a first surface 20a and a second surface 20b, which are disposed opposite to and spaced apart along the thickness direction of the substrate 20. The substrate 20 is located in a bending region 10a and a non-bending region 10b. A display screen 30 is disposed on one side of the substrate 20 along the thickness direction of the substrate 20, and is located in the bending region 10a and the non-bending region 10b. A groove 21 is provided on at least one side of the substrate 20 along the thickness direction of the substrate 20. The opening 21a of one groove 21 is located on one of the first surface 20a and the second surface 20b. A portion of the groove 21 is disposed in the bending region 10a, and another portion of the groove 21 is disposed in the first non-bending region 10b1. The first direction intersects the thickness direction of the substrate 20. Thus, both the substrate 20 and the display screen 30 are located in the bending area 10a and the non-bending area 10b of the display panel 10, and the display screen 30 is disposed on one side of the substrate 20 along the thickness direction of the substrate 20. Since the substrate 20 has a groove 21 on at least one side along the thickness direction of the substrate 20, and the groove opening 21a of one groove 21 is located on one of the first surface 20a and the second surface 20b, with part of the groove 21 disposed in the bending area 10a and another part of the groove 21 disposed in the first non-bending area 10b1, the compressive stress between the substrate 20 and the display screen 30 can be reduced through the groove 21 during the bending process of the display panel 10. This reduces the stress on the substrate 20 and the display screen 30 during the bending process, thereby reducing the misalignment and peeling between the film layers at the bending point of the display panel 10, and ultimately reducing the misalignment and peeling between the film layers at the bending point of the display device 100, thus improving the service life of the display device 100.

[0139] It is understood that the display device 100 in the embodiments of this application may be a laptop computer, mobile phone, wireless device, personal digital assistant (PDA), handheld or portable computer, GPS receiver / navigator, camera, MP4 video player, camcorder, game console, watch, clock, calculator, TV monitor, flat panel display, computer monitor, car display (e.g., odometer display, etc.), navigator, cockpit controller and / or display, display of camera view (e.g., display of rearview camera in a vehicle), electronic photograph, electronic billboard or sign, front projector, etc.

[0140] Thirdly, see Figures 12-16As shown, this application provides a method for manufacturing a display device 100. The display device 100 includes a display panel 10, which includes a bending region 10a and a non-bending region 10b. The bending region 10a and the non-bending region 10b are arranged along a first direction. The non-bending region 10b includes a first sub-non-bending region 10b1 and a second sub-non-bending region 10b2. The first sub-non-bending region 10b1 is located between the bending region 10a and the second sub-non-bending region 10b2. The method for manufacturing the display device 100 includes the following steps:

[0141] S100: A support member 70 is provided, and a protrusion 80 is formed on one side of the support member 70;

[0142] S200: A substrate 20 is formed on the side of the support member 70 facing the protrusion 80; the substrate 20 includes a first surface 20a and a second surface 20b, the first surface 20a and the second surface 20b are arranged opposite to each other and spaced apart along the thickness direction of the substrate 20, and the substrate 20 is located in the bending region 10a and the non-bending region 10b.

[0143] S300: A groove 21 matching the protrusion 80 is formed on the side of the substrate 20 facing the protrusion 80; the opening 21a of a groove 21 is located on one of the first surface 20a and the second surface 20b, a portion of the groove 21 is disposed in the bending area 10a, and another portion of the groove 21 is disposed in the first non-bending area 10b1, the first direction intersects with the thickness direction of the substrate 20;

[0144] S400: Remove the support member 70 and the protrusion 80 to expose the groove 21;

[0145] S500: A display screen 30 is formed on the side of the substrate 20 away from the groove 21. The display screen 30 is located in the bending area 10a and the non-bending area 10b.

[0146] It should be noted that during the process of forming the protrusion 80 on one side of the carrier 70, the protrusion 80 can be formed by depositing and etching a silicon oxide or nitrogen oxide film on the carrier 70. Of course, the protrusion 80 can also be formed by other means. At the same time, the protrusion 80 can also be formed by depositing and etching other films. Here, the method of forming the protrusion 80 will not be limited or described in detail.

[0147] Furthermore, during the formation of the substrate 20 on the side of the carrier 70 facing the protrusion 80, inkjet printing can be used to form the substrate 20. Of course, the substrate 20 can also be formed by other methods. Here, the method of forming the substrate 20 will not be limited or described in detail.

[0148] Similarly, the removal of the carrier 70 and the protrusion 80 can be performed by laser stripping. Of course, the carrier 70 and the protrusion 80 can also be removed by other methods. Here, the present application does not limit or elaborate on the methods for removing the carrier 70 and the protrusion 80.

[0149] The method for manufacturing a display device 100 provided in this application embodiment is used to manufacture the display device 100. The display device 100 includes a display panel 10, and a substrate 20 includes a first surface 20a and a second surface 20b. The first surface 20a and the second surface 20b are disposed opposite to each other and spaced apart along the thickness direction of the substrate 20. The substrate 20 is located in a bending region 10a and a non-bending region 10b. A display screen 30 is disposed on one side of the substrate 20 along the thickness direction of the substrate 20, and the display screen 30 is located in the bending region 10a and the non-bending region 10b. A groove 21 is provided on at least one side of the substrate 20 along the thickness direction of the substrate 20. The opening 21a of one groove 21 is located on one of the first surface 20a and the second surface 20b. A portion of the groove 21 is disposed in the bending region 10a, and another portion of the groove 21 is disposed in the first non-bending region 10b1. The first direction intersects with the thickness direction of the substrate 20. Thus, both the substrate 20 and the display screen 30 are located in the bending area 10a and the non-bending area 10b of the display panel 10, and the display screen 30 is disposed on one side of the substrate 20 along the thickness direction of the substrate 20. Since the substrate 20 has a groove 21 on at least one side along the thickness direction of the substrate 20, and the groove opening 21a of one groove 21 is located on one of the first surface 20a and the second surface 20b, with part of the groove 21 disposed in the bending area 10a and another part of the groove 21 disposed in the first non-bending area 10b1, the compressive stress between the substrate 20 and the display screen 30 can be reduced through the groove 21 during the bending process of the display panel 10. This reduces the stress on the substrate 20 and the display screen 30 during the bending process, thereby reducing the misalignment and peeling between the film layers at the bending point of the display panel 10, improving the service life of the display panel 10, and ultimately reducing the misalignment and peeling between the film layers at the bending point of the display device 100, thus improving the service life of the display device 100.

[0150] Thus, since this application provides a carrier 70 before forming the substrate 20 and forms a protrusion 80 on one side of the carrier 70, and then exposes the groove 21 by removing the carrier 70 and the protrusion 80 after forming the substrate 20 and the groove 21, this application forms the substrate 20 and the groove 21 by adding a mask plate with a protrusion 80 before forming the substrate 20. This does not require changing the existing process, is highly feasible, and facilitates the operation process for operators.

[0151] It should be understood that, in the embodiments of this application, at least some of the steps in the accompanying drawings may include multiple steps or multiple stages. These steps or stages are not necessarily completed at the same time, but may be executed at different times. The execution order of these steps or stages is not necessarily sequential, but may be executed in turn or alternately with other steps or at least some of the steps or stages in other steps.

[0152] When using the terms “including,” “having,” and “comprising” as described herein, another component may be added unless explicitly qualifying terms such as “only,” “consisting of,” etc. are used. Unless otherwise stated, singular terms may include plural forms and should not be construed as having a quantity of one.

[0153] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0154] The above embodiments merely illustrate several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A display panel, the display panel comprising a bent area and a non-bent area, the bent area and the non-bent area being arranged along a first direction, the non-bent area comprising a first sub-non-bent area and a second sub-non-bent area, the first sub-non-bent area being located between the bent area and the second sub-non-bent area; characterized in that, The display panel includes: A substrate includes a first surface and a second surface, the first surface and the second surface being disposed opposite to each other and spaced apart along the thickness direction of the substrate, the substrate being located in the bending region and the non-bending region; A display screen is disposed on one side of the substrate along the thickness direction of the substrate, and the display screen is located in the bending area and the non-bending area; The substrate has a groove on at least one side along its thickness direction, and the opening of one of the grooves is located on one of the first surface and the second surface. Part of the groove is located in the bending area, and another part of the groove is located in the first non-bending area. The first direction intersects with the thickness direction of the substrate.

2. The display panel according to claim 1, characterized in that, The bending area has a bending center line, which is perpendicular to the substrate and passes through the groove; Optionally, the grooves are symmetrically arranged along the center line of the bend.

3. The display panel according to claim 1, characterized in that, The sum of the dimension of the bending area along the first direction and the dimension of the first non-bending area along the first direction is L1, and the dimension of the bending area along the first direction is L2; Where 1.2≤L1 / L2≤1.8; Optionally, the groove has a dimension of L3 along the thickness direction of the substrate, and the substrate has a dimension of L4 along the thickness direction of the substrate. Where 0.3≤L3 / L4≤0.5; Optionally, on the same side of the substrate along the thickness direction, the number of grooves is one; the groove depth gradually decreases from the center to the edge of the bending area along the first direction; or; On the same side of the substrate along the thickness direction, there are multiple grooves; the maximum groove depth of each groove decreases sequentially from the center to the edge of the bending area along the first direction.

4. The display panel according to claim 1, characterized in that, On the same side of the substrate along the thickness direction, there are multiple grooves; Optionally, at least a portion of the grooves have different dimensions along the first direction; Optionally, from the bent area to the non-bent area, the dimensions of the plurality of grooves gradually increase or decrease along the first direction; Optionally, on the same side of the substrate along the thickness direction, the plurality of grooves include a first groove and a second groove, wherein the first groove is disposed in the bending region; a portion of the second groove is disposed in the bending region, and the remaining portion of the second groove is disposed in the first non-bending region; Optionally, the dimension of the second groove in the first non-bending area along the first direction is equal to the dimension of the first non-bending area along the first direction.

5. The display panel according to any one of claims 1-4, characterized in that, All the grooves are located on the first surface; or, All the grooves are provided on the second surface.

6. The display panel according to any one of claims 1-4, characterized in that, There are multiple grooves, with a portion of the grooves having their openings on the first surface and another portion having their openings on the second surface; Optionally, along the thickness direction of the substrate, the projection of the groove on the first surface onto the substrate at least partially overlaps with the projection of the groove on the second surface onto the substrate; or A portion of the grooves on the first surface and another portion of the grooves on the second surface are offset along the thickness direction of the substrate.

7. The display panel according to any one of claims 1-4, characterized in that, The display panel also includes: A filler is disposed in the groove; the elastic modulus of the substrate is greater than the elastic modulus of the filler.

8. The display panel according to any one of claims 1-4, characterized in that, The display panel also includes: A support member is provided on the side of the substrate opposite to the display screen; Optionally, the elastic modulus of the support member is greater than that of the substrate; Optionally, the display panel further includes: A cover plate is disposed on the side of the display screen opposite to the substrate; Optionally, the elastic modulus of the cover plate is greater than that of the substrate; Optionally, the elastic modulus of the support member is greater than that of the cover plate.

9. A display device, characterized in that, Includes the display panel as described in any one of claims 1-8.

10. A method for manufacturing a display device, comprising a display panel, the display panel including a bent area and a non-bent area, the bent area and the non-bent area being arranged along a first direction, the non-bent area including a first sub-non-bent area and a second sub-non-bent area, the first sub-non-bent area being located between the bent area and the second sub-non-bent area; characterized in that, The method for manufacturing the display device includes: A support member is provided, with a protrusion formed on one side of the support member; A substrate is formed on the side of the support member facing the protrusion; the substrate includes a first surface and a second surface, the first surface and the second surface are disposed opposite to each other and spaced apart along the thickness direction of the substrate, and the substrate is located in the bending area and the non-bending area; A groove matching the protrusion is formed on the side of the substrate facing the protrusion; the opening of the groove is located on one of the first surface and the second surface, a portion of the groove is disposed in the bending area, and another portion of the groove is disposed in the first non-bending area, the first direction intersects the thickness direction of the substrate; Remove the support member and the protrusion to expose the groove; A display screen is formed on the side of the substrate opposite to the groove, and the display screen is located in the bending area and the non-bending area.

Images