Stretchable display panel, preparation method thereof and display device

Abstract

The application provides a stretchable display panel and a preparation method thereof and a display device. The stretchable display panel comprises island regions and hole regions between adjacent island regions; the edges of the island regions extend to the hole regions and are provided with a plurality of extension regions, and the plurality of extension regions are distributed in a trapezoidal shape; and at least one extension region is provided with an isolation column. The stretchable display panel provided by the application forms a plurality of extension regions extending to the hole regions at the edges of the island regions, the plurality of extension regions are distributed in a stepped manner, and the isolation column is arranged on the extension region; when the encapsulation layer is patterned and the substrate is stripped, the crack generated by the encapsulation layer of the hole region can be effectively blocked from spreading to the display substrate, and the risk of encapsulation failure is reduced.

Description

Technical Field

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

[0002] The most prominent advantage of flexible OLED (Organic Light-Emitting Diode) displays over traditional flat panel displays is that they break through the inherent concept of two-dimensional displays and expand the application of displays to more everyday life and portable devices.

[0003] However, the performance of existing flexible and stretchable displays needs to be improved. Summary of the Invention

[0004] In view of this, the purpose of this application is to propose a stretchable display panel that avoids encapsulation failure and has a long service life.

[0005] To achieve the above objectives, this application provides a stretchable display panel, which includes:

[0006] Island areas, and hole areas located between adjacent island areas;

[0007] The edge of the island area extends toward the hole area and forms multiple extension areas, which are distributed in a trapezoidal shape.

[0008] At least one of the extended areas is provided with isolation columns.

[0009] Preferably, at least one of the extended regions is provided with a plurality of isolation pillars, and the plurality of isolation pillars are spaced apart along the direction from the island region to the hole region;

[0010] Preferably, the plurality of isolation columns are arranged at equal intervals along the direction from the island area to the hole area;

[0011] Preferably, the height of the isolation column is 2-6 μm;

[0012] Preferably, the spacing between two adjacent isolation columns is 2-6 μm.

[0013] Preferably, the surface of the isolation post and the surface of the hole area are covered with an encapsulation layer.

[0014] Preferably, the extended region includes a first extended region and a second extended region, the height of the second extended region is greater than that of the first extended region, and the first extended region is located between the hole area and the second extended region.

[0015] Preferably, the plurality of isolation columns include at least one first isolation column and at least one second isolation column, wherein the first isolation column is disposed in the first extension region and the second isolation column is disposed in the second extension region.

[0016] Preferably, multiple first isolation columns are provided, and the multiple first isolation columns are spaced apart along the direction from the island area to the hole area; among the multiple first isolation columns, the height of the multiple first isolation columns increases sequentially along the direction from the island area to the hole area;

[0017] Preferably, multiple second isolation columns are provided, and the multiple second isolation columns are spaced apart along the direction from the island area to the hole area; among the multiple second isolation columns, the height of the multiple second isolation columns increases sequentially along the direction from the island area to the hole area.

[0018] Preferably, the island region includes a first flexible substrate, a first buffer layer, a second flexible substrate, and a second buffer layer stacked sequentially, wherein the first flexible substrate and the first buffer layer extend toward the hole region to form the first extended region, and the second flexible substrate and the second buffer layer extend toward the hole region to form the second extended region.

[0019] Preferably, the orthographic projection of the first extended region on the first flexible substrate is adjacent to the orthographic projection of the second extended region on the first flexible substrate.

[0020] Based on the same inventive concept, this application also discloses a display device comprising the stretchable display panel described in any of the preceding claims.

[0021] Based on the same inventive concept, this application also discloses a method for manufacturing a stretchable display panel, which includes:

[0022] A flexible substrate is formed on the substrate;

[0023] A buffer layer is formed on the flexible substrate;

[0024] Hole regions and island regions are formed on the flexible substrate and buffer layer;

[0025] Multiple stepped extension regions are formed on the buffer layer;

[0026] An isolation column is formed on at least one of the extended regions.

[0027] Preferably, after forming the isolation pillar on at least one of the extended regions, the method further includes:

[0028] An encapsulation layer is applied to the surface of the isolation pillar and the surface of the hole area.

[0029] The substrate is peeled off from the flexible substrate.

[0030] Preferably, the method for manufacturing the stretchable display panel includes:

[0031] A first flexible substrate is formed on the substrate;

[0032] A first buffer layer is formed on the first flexible substrate;

[0033] Hole regions and island regions are formed on the first flexible substrate and the first buffer layer;

[0034] A second flexible substrate is formed on the first buffer layer, and a plurality of first extended regions are formed in a stepped distribution.

[0035] First isolation columns are formed at intervals along the direction from the island area to the hole area in at least one of the first extended regions;

[0036] A second buffer layer is formed on the second flexible substrate, and a plurality of second extended regions are formed in a stepped distribution.

[0037] Second isolation columns are formed on at least one of the second extension regions, spaced apart along the direction from the island area to the hole area.

[0038] Compared with the prior art, the stretchable display panel provided in this application forms multiple extension areas extending towards the hole area at the edge of the island area. The multiple extension areas are distributed in a stepped manner, and isolation pillars are set on the extension areas. When the encapsulation layer is patterned and the substrate is peeled off, it can effectively prevent the cracks generated by the encapsulation layer in the hole area from spreading to the display substrate, thereby reducing the risk of encapsulation failure. Attached Figure Description

[0039] To more clearly illustrate the technical solutions in this application or related technologies, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0040] Figure 1 This is a schematic diagram of the hierarchical structure of an existing stretchable display panel;

[0041] Figure 2 This is a schematic diagram of the layer structure of a stretchable display panel provided in a preferred embodiment of this application;

[0042] Figure 3 A schematic diagram of the layer structure of a stretchable display panel provided in another preferred embodiment of this application;

[0043] Figure 4 A flowchart illustrating a method for fabricating a stretchable display panel according to another preferred embodiment of this application;

[0044] Figure 5 A flowchart illustrating a method for fabricating a stretchable display panel according to another preferred embodiment of this application;

[0045] Figure 6 A flowchart illustrating a method for fabricating a stretchable display panel according to another preferred embodiment of this application;

[0046] Figure 7 A flowchart illustrating a method for fabricating a stretchable display panel according to another preferred embodiment of this application.

[0047] Marker explanation:

[0048] 1. Island area;

[0049] 2. Hole area;

[0050] 3. Substrate;

[0051] 4. Display substrate; 41. Flexible substrate; 42. Buffer layer; 411. First flexible substrate; 421. First buffer layer; 412. Second flexible substrate; 422. Second buffer layer;

[0052] 5. Encapsulation layer;

[0053] 6. Extended area; 61. First extended area; 62. Second extended area;

[0054] 7. Isolation column; 71. First isolation column; 72. Second isolation column. Detailed Implementation

[0055] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with specific embodiments and the accompanying drawings.

[0056] It should be noted that, unless otherwise defined, the technical or scientific terms used in the embodiments of this application should have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," and similar terms used in the embodiments of this application do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are only used to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0057] Stretchable displays, as a next-generation form of flexible display technology, offer more flexible and imaginative application scenarios. (Refer to...) Figure 1 Existing stretchable display panels generally employ an island-bridge structure. This structure involves forming island regions 1 and bridge regions connecting adjacent island regions on a substrate 3, with openings in the bridge regions to form aperture regions 2. A display substrate 4 is mounted on the island region 1, typically including a flexible substrate, light-emitting units, and other structures. An encapsulation layer 5 is formed on the display substrate 4 and the aperture regions 2. This island-bridge structure provides space for deformation of the display panel, enabling it to be stretchable. To prevent damage to the encapsulation layer due to excessive stress at the aperture regions during stretching, the encapsulation layer 5 needs to be patterned.

[0058] Through long-term research, the inventors discovered that during the patterning of the encapsulation layer 5 and the separation of the substrate 3 from the flexible substrate using laser lift-off, cracks can form in the encapsulation layer 5 at the edge of the aperture region 2. These cracks can easily diffuse towards the sidewalls of the aperture region 2 and the display substrate 4, leading to moisture intrusion into the light-emitting unit, causing the light-emitting material to fail and affecting the lifespan of the display panel. Based on this, this application provides a display panel solution to address the aforementioned technical problems, as detailed in the following embodiments.

[0059] Reference Figure 2 As shown, a preferred embodiment of this application discloses a stretchable display panel, which includes:

[0060] Island area 1, and hole area 2 located between adjacent island areas 1; the edge of island area 1 extends toward hole area 2 and forms multiple extension areas 6, which are distributed in a stepped manner; isolation columns 7 are provided on the extension areas 6.

[0061] The stretchable display panel provided in this application embodiment forms multiple extension regions 6 extending towards the hole region 2 at the edge of the island region 1. The multiple extension regions 6 are distributed in a stepped manner, and isolation pillars 7 are provided on the extension regions 6. During the patterning of the encapsulation layer and the peeling of the substrate, the cracks generated by the encapsulation layer in the hole region 2 can be effectively blocked from spreading to the display substrate 4, preventing moisture from entering the light-emitting unit and causing the light-emitting material to fail, thereby reducing the risk of encapsulation failure.

[0062] In one embodiment, the display substrate 4 includes a flexible substrate 41, a buffer layer 42, and a light-emitting unit stacked sequentially. The flexible substrate 41 is disposed on the substrate 3, and the flexible substrate 41 and the buffer layer 42 extend toward the hole region 2 to form an extension region 6. An isolation pillar 7 is disposed on the buffer layer 42. The flexible substrate 41 ensures the stretchability of the display panel, and the buffer layer 42 acts as a buffer between the flexible substrate 41 and the isolation pillar 7. Preferably, the flexible substrate 41 is polyimide. Optionally, the island region 1 further includes a GI layer, a CI layer, an ILD layer, a PLN layer, etc.; the GI layer is a gate dielectric layer, the CI layer is a gate insulating layer, the ILD layer is an interlayer insulating layer, and the PLN layer is a planarization layer.

[0063] In one embodiment, at least one extended region 6 is provided with a plurality of isolation pillars 7, which are spaced apart along the direction from the island region 1 to the hole region 2. The multiple isolation pillars 7 cooperate with each other to more effectively prevent cracks generated in the hole region encapsulation layer from propagating to the display substrate 4, reducing the risk of encapsulation failure. Furthermore, the multiple isolation pillars 7 are equally spaced along the direction from the island region 1 to the hole region 2. This can further enhance the blocking effect and prevent encapsulation failure. In another embodiment, the multiple isolation pillars 7 are not equally spaced along the direction from the island region 1 to the hole region 2; the specific arrangement is not limited.

[0064] In one embodiment, the height of the isolation post 7 is 2-6 μm, which can be 2 μm, 3 μm, 4 μm, or 6 μm, etc., and the spacing between two adjacent isolation posts is 2-6 μm, which can be 2 μm, 3 μm, 4 μm, or 6 μm, etc. In other embodiments, the height of the isolation post 7 and the spacing between two adjacent isolation posts can be set as needed, and are not specifically limited.

[0065] In one embodiment, the height of the plurality of isolation pillars 7 increases sequentially along the direction from the island area 1 to the hole area 2; this can further concentrate the stress borne by the edge of the display substrate 4 during the stretching process of the display panel on the isolation pillars 7 near the hole area 2.

[0066] In one embodiment, the cross-section of the isolation column 7 includes one or more of the following: circular, rectangular, trapezoidal, convex, or concave. Other shapes may also be included, without any specific limitation.

[0067] In one embodiment, the material of the isolation column 7 includes inorganic materials, organic materials, or metallic materials, etc., and is not specifically limited.

[0068] In one embodiment, the surface of the isolation pillar 7 and the surface of the hole area 2 are covered with an encapsulation layer 5, which is used to protect the display panel.

[0069] In one embodiment, the encapsulation layer 5 includes:

[0070] The first inorganic encapsulation layer covers the surface of the isolation pillar 7, the surface of the hole area 2, and the surface of the display substrate 4;

[0071] An organic encapsulation layer covers a portion of the first inorganic encapsulation layer;

[0072] The second inorganic encapsulation layer covers the organic encapsulation layer and the areas of the first inorganic encapsulation layer exposed by the organic encapsulation layer. Specifically, the coverage area of ​​the second inorganic encapsulation layer can be the same as that of the first inorganic encapsulation layer, covering the organic encapsulation layer and the areas of the first inorganic encapsulation layer not covered by the organic encapsulation layer, thereby encapsulating the organic encapsulation layer and preventing leakage. Simultaneously, the second inorganic encapsulation layer extends into the aperture region 2 and is stacked with the first inorganic encapsulation layer within the aperture region 2.

[0073] Reference Figure 3 As shown, in another embodiment of this application, the extension region 6 includes a first extension region 61 and a second extension region 62. The height of the second extension region 62 is greater than that of the first extension region 61, and the first extension region 61 is located between the hole region 2 and the second extension region 62. By having the first extension region 61 and the second extension region 62 of different heights cooperate with each other, the isolation effect is further improved.

[0074] In one embodiment, the plurality of isolation pillars 7 include at least one first isolation pillar 71 and at least one second isolation pillar 72. The first isolation pillar 71 is disposed in the first extension region 61, and the second isolation pillar 72 is disposed in the second extension region 62. By disposing isolation pillars on extension regions of different heights, the encapsulation layer 5 can be more completely covered by the isolation pillars, thereby improving the isolation effect.

[0075] In one embodiment, multiple first isolation pillars 71 are provided, and the multiple first isolation pillars 71 are spaced apart along the direction from the island area 1 to the hole area 2; along the direction from the island area 1 to the hole area 2, the height of the multiple first isolation pillars 71 increases sequentially. This can concentrate the stress borne by the edge of the display substrate 4 during the stretching process of the display panel on the isolation pillars near the hole area 2.

[0076] In one embodiment, multiple second isolation pillars 72 are provided, and the multiple second isolation pillars 72 are spaced apart along the direction from the island area 1 to the hole area 2; along the direction from the island area 1 to the hole area 2, the height of the multiple second isolation pillars 72 increases sequentially. This can concentrate the stress borne by the edge of the display substrate 4 during the stretching process of the display panel on the isolation pillars near the hole area 2.

[0077] In one embodiment, the display substrate 4 includes a first flexible substrate 411, a first buffer layer 421, a second flexible substrate 412, and a second buffer layer 422 sequentially disposed. The first flexible substrate 411 and the first buffer layer 421 extend toward the aperture region 2 to form a first extension region 61, and the second flexible substrate 412 and the second buffer layer 422 extend toward the aperture region 2 to form a second extension region 62. The first flexible substrate 411 and the second flexible substrate 412 ensure the stretchability of the display panel, while the first buffer layer 421 and the second buffer layer 422 provide a buffering effect. Preferably, the orthographic projection of the first extension region 61 onto the first flexible substrate 411 is adjacent to the orthographic projection of the second extension region 62 onto the first flexible substrate 411; this facilitates fabrication and ensures the isolation effect of the isolation pillars. In another embodiment, the edges of the first flexible substrate 411 and / or the first buffer layer 421 may also be provided with slopes, and the edges of the second flexible substrate 412 and / or the second buffer layer 422 may also be provided with slopes; the specific details are not limited.

[0078] Reference Figure 4 As shown, another embodiment of this application discloses a method for manufacturing a stretchable display panel. This method is used to manufacture the stretchable display panel described in the above embodiment. The manufactured stretchable display panel refers to... Figure 2 The method includes the following steps:

[0079] Step S11: Form a flexible substrate 41 on the substrate 3;

[0080] Step S12: Form a buffer layer 42 on the flexible substrate 41;

[0081] Step S13: Form hole region 2 and island region 1 on flexible substrate 41 and buffer layer 42;

[0082] Step S14: Form multiple stepped extension regions 6 on the buffer layer 42;

[0083] Step S15: Form isolation columns 7 on the extended region 6.

[0084] The method for preparing a stretchable display panel provided in this application involves forming multiple extension regions 6 extending toward the hole region 2 at the edge of the island region 1. The multiple extension regions 6 are distributed in a stepped manner, and isolation pillars 7 are provided on the extension regions 6. During the patterning of the encapsulation layer and the peeling of the substrate 3, the cracks generated by the encapsulation layer in the hole region 2 can be effectively blocked from spreading to the display substrate 4, preventing moisture from entering the light-emitting unit and causing the light-emitting material to fail, thereby reducing the risk of encapsulation failure.

[0085] In one embodiment, the display substrate 4 includes a flexible substrate 41, a buffer layer 42, and a light-emitting unit stacked sequentially. The flexible substrate 41 is disposed on the substrate 3, and the flexible substrate 41 and the buffer layer 42 extend toward the hole region 2 to form an extension region 6. An isolation pillar 7 is disposed on the buffer layer 42. The flexible substrate 41 ensures the stretchability of the display panel, and the buffer layer 42 acts as a buffer between the flexible substrate 41 and the isolation pillar 7. Preferably, the flexible substrate 41 is polyimide. Optionally, the island region 1 further includes a GI layer, a CI layer, an ILD layer, a PLN layer, etc.; the GI layer is a gate dielectric layer, the CI layer is a gate insulating layer, the ILD layer is an interlayer insulating layer, and the PLN layer is a planarization layer.

[0086] In one embodiment, at least one extended region 6 is provided with a plurality of isolation pillars 7, which are spaced apart along the direction from the island region 1 to the hole region 2. The multiple isolation pillars 7 cooperate with each other to more effectively prevent cracks generated in the hole region encapsulation layer from propagating to the display substrate 4, reducing the risk of encapsulation failure. Furthermore, the multiple isolation pillars 7 are equally spaced along the direction from the island region 1 to the hole region 2. This can further enhance the blocking effect and prevent encapsulation failure. In another embodiment, the multiple isolation pillars 7 are not equally spaced along the direction from the island region 1 to the hole region 2; the specific arrangement is not limited.

[0087] In one embodiment, the height of the isolation post 7 is 2-6 μm, which can be 2 μm, 3 μm, 4 μm, or 6 μm, etc., and the spacing between two adjacent isolation posts is 2-6 μm, which can be 2 μm, 3 μm, 4 μm, or 6 μm, etc. In other embodiments, the height of the isolation post 7 and the spacing between two adjacent isolation posts can be set as needed, and are not specifically limited.

[0088] In one embodiment, the height of the plurality of isolation pillars 7 increases sequentially along the direction from the island area 1 to the hole area 2; this can further concentrate the stress borne by the edge of the display substrate 4 during the stretching process of the display panel on the isolation pillars 7 near the hole area 2.

[0089] In one embodiment, the cross-section of the isolation column 7 includes one or more of the following: circular, rectangular, trapezoidal, convex, or concave. Other shapes may also be included, without any specific limitation.

[0090] In one embodiment, the material of the isolation column 7 includes inorganic materials, organic materials, or metallic materials, etc., and is not specifically limited.

[0091] Reference Figure 5 As shown, in one embodiment, after step S15, the following step is further included:

[0092] Step S16: Cover the surface of the isolation pillar 7, the surface of the hole area 2, and the surface of the display substrate 4 with an encapsulation layer 5;

[0093] Step S17: Peel the substrate 3 off the flexible substrate 41.

[0094] Among them, the encapsulation layer 5 is used to protect the display panel.

[0095] In one embodiment, the encapsulation layer 5 includes:

[0096] The first inorganic encapsulation layer covers the surface of the isolation pillar 7, the surface of the hole area 2, and the surface of the display substrate 4;

[0097] An organic encapsulation layer covers a portion of the first inorganic encapsulation layer;

[0098] The second inorganic encapsulation layer covers the organic encapsulation layer and the areas of the first inorganic encapsulation layer exposed by the organic encapsulation layer. Specifically, the coverage area of ​​the second inorganic encapsulation layer can be the same as that of the first inorganic encapsulation layer, covering the organic encapsulation layer and the areas of the first inorganic encapsulation layer not covered by the organic encapsulation layer, thereby encapsulating the organic encapsulation layer and preventing leakage. Simultaneously, the second inorganic encapsulation layer extends into the aperture region 2 and is stacked with the first inorganic encapsulation layer within the aperture region 2.

[0099] Reference Figure 6 As shown, another embodiment of this application discloses a method for manufacturing a stretchable display panel. This method is used to manufacture the stretchable display panel described in the above embodiment. The manufactured stretchable display panel refers to... Figure 4 The method includes the following steps:

[0100] Step S21: Form a first flexible substrate 411 on the substrate 3;

[0101] Step S22: Form a first buffer layer 421 on the first flexible substrate 411;

[0102] Step S23: Form hole region 2 and island region 1 on the first flexible substrate 411 and the first buffer layer 421;

[0103] Step S24: A second flexible substrate 412 is formed on the first buffer layer 421, and a plurality of first extension regions 61 are formed in a stepped distribution.

[0104] Step S25: Form first isolation pillars 71 spaced apart along the direction from the island area 1 to the hole area 2 on at least one first extension area 61;

[0105] Step S26: A second buffer layer 422 is formed on the second flexible substrate 412, and a plurality of second extension regions 62 are formed in a stepped distribution.

[0106] Step S27: Form second isolation pillars 72 spaced apart along the direction from the island area 1 to the hole area 2 on at least one second extension area 62.

[0107] In this embodiment, the first extension region 61 and the second extension region 62, which are of different heights, cooperate with each other to further enhance the isolation effect. Furthermore, by setting isolation pillars on the extension regions of different heights, it can be further ensured that the encapsulation layer 5 more completely covers the isolation pillars, thereby improving the isolation effect.

[0108] The first flexible substrate 411 and the second flexible substrate 412 ensure the stretchability of the display panel, while the first buffer layer 421 and the second buffer layer 422 provide a buffering effect. Preferably, the orthographic projection of the first extension region 61 on the first flexible substrate 411 and the orthographic projection of the second extension region 62 on the first flexible substrate 411 are adjacent; this facilitates fabrication and ensures the isolation effect of the isolation pillars. In another embodiment, the edges of the first flexible substrate 411 and / or the first buffer layer 421 may also be provided with slopes, and the edges of the second flexible substrate 412 and / or the second buffer layer 422 may also be provided with slopes; the specific details are not limited.

[0109] Reference Figure 7 As shown, in one embodiment, after step S27, the following step is further included:

[0110] Step S28: Cover the surface of the first isolation pillar 71, the surface of the second isolation pillar 72, and the surface of the hole area 2 with the encapsulation layer 5;

[0111] Step S29: Peel the substrate 3 off the first flexible substrate 411.

[0112] In one embodiment, multiple first isolation pillars 71 are provided, and the multiple first isolation pillars 71 are spaced apart along the direction from the island area 1 to the hole area 2; along the direction from the island area 1 to the hole area 2, the height of the multiple first isolation pillars 71 increases sequentially. This can concentrate the stress borne by the edge of the display substrate 4 during the stretching process of the display panel on the isolation pillars near the hole area 2.

[0113] In one embodiment, multiple second isolation pillars 72 are provided, and the multiple second isolation pillars 72 are spaced apart along the direction from the island area 1 to the hole area 2; along the direction from the island area 1 to the hole area 2, the height of the multiple second isolation pillars 72 increases sequentially. This can concentrate the stress borne by the edge of the display substrate 4 during the stretching process of the display panel on the isolation pillars near the hole area 2.

[0114] Another embodiment of this application discloses a display device including the stretchable display panel of any of the above embodiments. This display device can be mounted on smart devices (such as mobile phones, VR devices, computers, televisions, in-vehicle displays, etc.).

[0115] The display device provided in this application embodiment has a stretchable display panel that forms multiple extension regions 6 extending toward the hole region 2 at the edge of the island region 1. The multiple extension regions 6 are distributed in a stepped manner, and isolation pillars 7 are provided on the extension regions 6. When the encapsulation layer is patterned and the substrate is peeled off, the cracks generated by the encapsulation layer in the hole region 2 can be effectively blocked from spreading to the display substrate 4, preventing moisture from entering the light-emitting unit and causing the light-emitting material to fail, thus reducing the risk of encapsulation failure.

[0116] Although this application has been described in conjunction with specific embodiments thereof, many substitutions, modifications and variations of these embodiments will be apparent to those skilled in the art from the foregoing description.

[0117] It should be noted that the above description describes some embodiments of this application. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recorded in the claims can be performed in a different order than that shown in the above embodiments and still achieve the desired result. Furthermore, the processes depicted in the drawings do not necessarily require a specific or sequential order to achieve the desired result. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0118] The embodiments of this application are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the embodiments of this application should be included within the protection scope of this application.

Claims

1. A stretchable display panel, characterized in that, include: Island areas, and hole areas located between adjacent island areas; The edge of the island area extends toward the hole area and forms multiple extension areas, which are distributed in a trapezoidal shape. At least one of the extended areas is provided with an isolation column; The display substrate includes a flexible substrate, a buffer layer and a light-emitting unit stacked sequentially. The flexible substrate is disposed on the substrate, and the flexible substrate and the buffer layer extend toward the hole area to form an extension region. The isolation pillar is disposed on the buffer layer. The extended region includes a first extended region and a second extended region, the height of the second extended region is greater than that of the first extended region, and the first extended region is located between the hole area and the second extended region; the plurality of isolation pillars include at least one first isolation pillar and at least one second isolation pillar, the first isolation pillar is disposed in the first extended region, and the second isolation pillar is disposed in the second extended region; Multiple first isolation pillars are provided, and the multiple first isolation pillars are spaced apart along the direction from the island area to the hole area; among the multiple first isolation pillars, the height of the multiple first isolation pillars increases sequentially along the direction from the island area to the hole area; Multiple second isolation pillars are provided, and the multiple second isolation pillars are spaced apart along the direction from the island area to the hole area; among the multiple second isolation pillars, the height of the multiple second isolation pillars increases sequentially along the direction from the island area to the hole area.

2. The stretchable display panel as described in claim 1, characterized in that, At least one of the extended regions is provided with a plurality of isolation pillars, which are spaced apart along the island region toward the hole region.

3. The stretchable display panel as described in claim 2, characterized in that, The multiple isolation columns are evenly spaced along the direction from the island area to the hole area.

4. The stretchable display panel as described in claim 1, characterized in that, The height of the isolation column is 2-6 μm.

5. The stretchable display panel as described in claim 1, characterized in that, The spacing between two adjacent isolation columns is 2-6 μm.

6. The stretchable display panel as described in claim 1, characterized in that, The surface of the isolation pillar and the surface of the hole area are covered with an encapsulation layer.

7. The stretchable display panel as described in claim 1, characterized in that, The island region includes a first flexible substrate, a first buffer layer, a second flexible substrate, and a second buffer layer stacked sequentially. The first flexible substrate and the first buffer layer extend toward the hole region to form the first extended region, and the second flexible substrate and the second buffer layer extend toward the hole region to form the second extended region.

8. The stretchable display panel as described in claim 7, characterized in that, The orthographic projection of the first extended region onto the first flexible substrate is adjacent to the orthographic projection of the second extended region onto the first flexible substrate.

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

10. A method for manufacturing a stretchable display panel, applied to the stretchable display panel as described in any one of claims 1-8, characterized in that, include: A flexible substrate is formed on the substrate; A buffer layer is formed on the flexible substrate; Hole regions and island regions are formed on the flexible substrate and buffer layer; Multiple stepped extension regions are formed on the buffer layer; An isolation column is formed on at least one of the extended regions.

11. The method for manufacturing a stretchable display panel as described in claim 10, characterized in that, After forming the isolation pillar on at least one of the extended regions, the method further includes: An encapsulation layer is applied to the surface of the isolation pillar and the surface of the hole area. The substrate is peeled off from the flexible substrate.

12. The method for manufacturing a stretchable display panel as described in claim 11, characterized in that, include: A first flexible substrate is formed on the substrate; A first buffer layer is formed on the first flexible substrate; Hole regions and island regions are formed on the first flexible substrate and the first buffer layer; A second flexible substrate is formed on the first buffer layer, and a plurality of first extended regions are formed in a stepped distribution. First isolation columns are formed at intervals along the direction from the island area to the hole area in at least one of the first extended regions; A second buffer layer is formed on the second flexible substrate, and a plurality of second extended regions are formed in a stepped distribution. Second isolation columns are formed on at least one of the second extension regions, spaced apart along the direction from the island area to the hole area.

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