Display panel and display device

Abstract

The utility model discloses a display panel and a display device. The display panel comprises a display area and a non-display area surrounding the display area. The non-display area comprises a packaging layer, an insulating layer and a substrate which are stacked, and the insulating layer is located between the packaging layer and the substrate; a plurality of first groove structures are arranged on the contact surface of the insulating layer and the packaging layer, part of the packaging layer is filled in the first groove structures, and the plurality of first groove structures are all located in the non-display area; a plurality of slits are formed in the side, away from the display area, of the insulating layer, and the projection of the packaging layer on the insulating layer does not cover the slits. According to the utility model, the peeling risk of the packaging layer when the protective film is torn can be reduced by improving the bonding force between the insulating layer and the packaging layer.

Description

Technical Field

[0001] This utility model relates to the field of display technology, and in particular to a display panel and display device. Background Technology

[0002] Currently, when encapsulating OLED displays with a thin film encapsulation (TFE) layer, a protective film needs to be attached above the TFE layer to prevent scratches. This protective film is then removed before the polarizer is attached.

[0003] However, since the protective film usually uses adhesives with low adhesion, such as polyurethane adhesive, it will adhere to the TFE layer. When peeling off the protective film, excessive peeling force or peeling speed will cause the TFE film layer to peel off from the underlying film layer, resulting in a loss of yield. Utility Model Content

[0004] This invention provides a display panel and display device to reduce the risk of encapsulation layer peeling off.

[0005] In a first aspect, this utility model provides a display panel, the display panel including a display area and a non-display area surrounding the display area;

[0006] The non-display area includes a stacked encapsulation layer, an insulating layer, and a substrate, with the insulating layer located between the encapsulation layer and the substrate;

[0007] The contact surface between the insulating layer and the encapsulation layer is provided with a plurality of first groove structures, a portion of the encapsulation layer is filled in the first groove structures, and the plurality of first groove structures are all located in the non-display area;

[0008] The insulating layer has multiple slits on the side away from the display area, and the projection of the encapsulation layer onto the insulating layer does not cover the slits.

[0009] Furthermore, the encapsulation layer includes a first encapsulation layer and a second encapsulation layer; the first encapsulation layer is in contact with the insulating layer, and the second encapsulation layer is located on the side of the first encapsulation layer away from the insulating layer;

[0010] A portion of the first encapsulation layer is filled in the first groove structure.

[0011] Furthermore, a plurality of third groove structures are provided on the contact surface between the first encapsulation layer and the second encapsulation layer, and a portion of the second encapsulation layer is filled in the third groove structures, and the plurality of third groove structures are all located in the non-display area.

[0012] Furthermore, the plurality of third groove structures are arranged in a dot matrix, and the spacing between the third groove structures is the same; the plurality of first groove structures are arranged in a dot matrix, and the spacing between the first groove structures is the same.

[0013] Furthermore, the cross-sectional shape of the third groove structure may be the same as or different from that of the third groove structure.

[0014] Furthermore, the display panel also includes an intermediate layer, and the insulating layer is provided with a second groove structure, the slit including the second groove structure.

[0015] Furthermore, the intermediate layer is located between the insulating layer and the substrate, and the slit extends from the insulating layer to the intermediate layer, forming a groove in the intermediate layer.

[0016] Optionally, the thickness of the first groove structure is less than or equal to the thickness of the insulating layer.

[0017] Furthermore, the cross-sectional shape of the first groove structure includes one or a combination of several of the following: rectangular, trapezoidal, triangular, spherical, ellipsoidal, or irregular shapes.

[0018] Secondly, embodiments of the present invention also provide a display device, including the display panel in any embodiment of the present invention.

[0019] This invention provides a display panel and a display device. The display panel includes a display area and a non-display area surrounding the display area. The non-display area includes a stacked encapsulation layer, an insulating layer, and a substrate, with the insulating layer located between the encapsulation layer and the substrate. Multiple first groove structures are provided on the contact surface between the insulating layer and the encapsulation layer. Part of the encapsulation layer fills the first groove structures, and all the first groove structures are located in the non-display area. This improves the adhesion between the insulating layer and the encapsulation layer, preventing insufficient adhesion between the film layers in the non-display area from causing the encapsulation layer to peel off when the protective film is removed. Multiple slits are provided on the side of the insulating layer away from the display area. The projection of the encapsulation layer onto the insulating layer does not cover the slits, allowing stress on the edge of the non-display area to be released through the slits, preventing the display panel from cracking. This invention reduces the risk of the encapsulation layer peeling off when the protective film is removed by improving the adhesion between the insulating layer and the encapsulation layer. Attached Figure Description

[0020] Figure 1 This is a plan view of a display panel provided for an embodiment of the present utility model.

[0021] Figure 2 This is a schematic diagram of the cross-sectional structure of the display panel along section line AB, provided in an embodiment of the present invention.

[0022] Figure 3This is a schematic diagram of the cross-sectional structure of another display panel along section line AB, provided for an embodiment of the present utility model.

[0023] Figure 4 This is a schematic diagram of the cross-sectional structure of another display panel along section line AB, provided as an embodiment of the present utility model.

[0024] Figure 5 This is a plan view of another display panel provided in an embodiment of the present utility model.

[0025] Figure 6 This is a schematic diagram of the cross-sectional structure of a display panel along the section line CD, provided for an embodiment of the present utility model. Detailed Implementation

[0026] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0027] Figure 1 This is a plan view of a display panel provided in an embodiment of the present utility model. Figure 2 This is a schematic diagram of the cross-sectional structure of the display panel along section line AB provided in an embodiment of the present invention, as shown below. Figure 1 and Figure 2 As shown, the display panel includes a display area AA and a non-display area NA surrounding the display area.

[0028] The non-display area NA includes a stacked encapsulation layer 10, an insulating layer 20, and a substrate 30, with the insulating layer 20 located between the encapsulation layer 10 and the substrate 30. Multiple first groove structures 201 are provided on the contact surface between the insulating layer 20 and the encapsulation layer 10, and a portion of the encapsulation layer 10 is filled in the first groove structures 201. All the multiple first groove structures 201 are located in the non-display area.

[0029] The insulating layer 20 has multiple slits 40 on the side away from the display area AA, and the projection of the encapsulation layer 10 on the insulating layer 20 does not cover the slits 40.

[0030] To prevent scratches on the encapsulation layer 10, a protective film is attached to the top of the encapsulation layer 10. Before attaching the polarizer to the encapsulation layer 10, the protective film must be removed. To prevent the encapsulation layer 10 from detaching from the insulating layer 20 due to excessive tearing force or speed, a first groove structure 201 is etched on the insulating layer 20 below the encapsulation layer 10. This increases the contact area between the encapsulation layer 10 and the insulating layer 20, thereby increasing the adhesion between the encapsulation layer 10 and the insulating layer 20 and preventing the encapsulation layer 10 from detaching when the protective film is removed.

[0031] Specifically, the display panel includes a display area AA and a non-display area NA surrounding the display area. Figure 2 The encapsulation layer 10, insulating layer 20, slit 40, and substrate 30 shown are all located in the non-display area NA. The insulating layer 20 is located between the encapsulation layer 10 and the substrate 30. Multiple first groove structures 201 are provided on the contact surface between the insulating layer 20 and the encapsulation layer 10. Part of the encapsulation layer 10 fills the first groove structures 201. The first groove structures 201 can be formed by etching with a mask. The cross-section of the first groove structure 201 can be a concave shape of any shape to increase the contact area between the encapsulation layer 10 and the insulating layer 20, thereby increasing the adhesion between the encapsulation layer 10 and the underlying insulating layer 20, preventing the encapsulation layer 10 from falling off when the protective film is peeled off, thereby improving the yield of the display panel.

[0032] Furthermore, the insulating layer 20 has multiple slits 40 on the side away from the display area AA. The slits 40 are located at the edge of the non-display area NA, and the projection of the encapsulation layer 10 onto the insulating layer 20 does not cover the slits 40. When the display panel is cut from the edge of the non-display area NA, cracks will be generated in the film layer where the non-display area NA is located. To prevent the display area AA from being affected by moisture and oxygen intrusion when the cracks extend to it, causing the display device encapsulation to fail, this embodiment of the present invention provides slits 40 at the edge of the non-display area NA to slow down the speed at which the cracks extend to the display area AA. The slits 40 release the stress on the edge of the non-display area NA, preventing the display panel from cracking, thereby improving the yield rate of the display panel.

[0033] This invention provides a display panel comprising a display area and a non-display area surrounding the display area. The non-display area includes a stacked encapsulation layer, an insulating layer, and a substrate, with the insulating layer located between the encapsulation layer and the substrate. Multiple first groove structures are provided on the contact surface between the insulating layer and the encapsulation layer, with a portion of the encapsulation layer filling these first groove structures. All the first groove structures are located within the non-display area, thereby increasing the adhesion between the insulating layer and the encapsulation layer. This prevents insufficient adhesion between the film layers in the non-display area from causing the encapsulation layer to peel off when the protective film is removed. Multiple slits are provided on the side of the insulating layer away from the display area, and the projection of the encapsulation layer onto the insulating layer does not cover these slits. This allows stress on the edge of the non-display area to be released through the slits, preventing the display panel from cracking and significantly improving the yield rate of the display panel.

[0034] This embodiment of the invention also provides another display panel to further prevent the encapsulation layer 10 from falling off when the protective film is peeled off, thereby further improving the yield rate of the display panel. Figure 3 A schematic diagram of the cross-sectional structure of another display panel along section line AB provided in an embodiment of this utility model is shown below. Figure 3As shown, the encapsulation layer 10 includes a first encapsulation layer 11 and a second encapsulation layer 12; the first encapsulation layer 11 is in contact with the insulating layer 20, and the second encapsulation layer 12 is located on the side of the first encapsulation layer 11 away from the insulating layer 20; a portion of the first encapsulation layer 11 is filled in the first groove structure 201.

[0035] Both the first encapsulation layer 11 and the second encapsulation layer 12 can be chemical vapor deposition (CVD) films. CVD films are formed by the interaction of mixed gases or the mixed gases with the substrate surface under certain temperature conditions, resulting in a thin film coating of metal or compound on the substrate surface, thus modifying the material surface. Through the encapsulation layer 10 containing the first encapsulation layer 11 and the second encapsulation layer 12, the display panel is encapsulated in a thin film, further sealing the OLED material in the display panel to protect it from external moisture and oxygen corrosion, thereby improving the reliability of the thin film encapsulation of the display panel. A protective film is attached above the second encapsulation layer 12, which must be removed before attaching the polarizer to the second encapsulation layer 12.

[0036] Specifically, the first encapsulation layer 11 and the second encapsulation layer 12 are a double-layer structure. The first encapsulation layer 11 is in contact with the insulating layer 20, and the second encapsulation layer 12 is located on the side of the first encapsulation layer 11 away from the insulating layer 20. Part of the first encapsulation layer 11 is filled in the first groove structure 201. The first groove structure 201 increases the contact area between the first encapsulation layer 11 and the insulating layer 20, that is, increases the encapsulation area, thereby increasing the adhesion between the first encapsulation layer 11 and the lower insulating layer 20. This prevents the first encapsulation layer 11 from falling off when the protective film is peeled off, thereby improving the yield of the display panel.

[0037] Furthermore, a plurality of third groove structures 111 are provided on the contact surface between the first encapsulation layer 11 and the second encapsulation layer 12, and part of the second encapsulation layer 12 is filled in the third groove structure 111. The plurality of third groove structures 111 are all located in the non-display area NA.

[0038] In this process, multiple third groove structures 111 are also formed by etching on the contact surface between the first encapsulation layer 11 and the second encapsulation layer 12. The third groove structure 111 can increase the contact area between the first encapsulation layer 11 and the second encapsulation layer 12, thereby increasing the adhesion between the first encapsulation layer 11 and the second encapsulation layer 12 and preventing separation between the second encapsulation layer 12 and the first encapsulation layer 11 when the protective film is peeled off.

[0039] Furthermore, the multiple third groove structures 111 are arranged in a dot matrix, and the spacing between the third groove structures 111 is the same; the multiple first groove structures 201 are arranged in a dot matrix, and the spacing between the first groove structures 201 is the same.

[0040] Specifically, multiple third groove structures 111 are arranged in a dot matrix, with the same spacing between them. Multiple first groove structures 201 are also arranged in a dot matrix, with the same spacing between them. That is, both the first groove structures 201 and the third groove structures 111 are arranged in a dot matrix, which can increase the adhesion between the insulating layer 20, the second encapsulation layer 12 and the first encapsulation layer 11, and prevent the second encapsulation layer 12 or the first encapsulation layer 11 from falling off when the protective film is removed.

[0041] Furthermore, the third groove structure 111 and the first groove structure 201 can be arranged in the same dot matrix, and the spacing between the third groove structures 111 is the same as the spacing between the first groove structures 201. This allows the third groove structures 111 and the first groove structures 201 to be etched using the same mask, reducing the number of masks used. Optionally, the third groove structure 111 and the first groove structure 201 can be arranged in the same dot matrix, but the third groove structures 111 and the first groove structure 201 can be staggered.

[0042] It should be noted that the third groove structure 111 and the first groove structure 201 can also be arranged in a dot matrix of different specifications, and etched to form the third groove structure 111 and the first groove structure 201 respectively. Of course, the third groove structure 111 and the first groove structure 201 can also not be arranged in a dot matrix. The arrangement of the third groove structure 111 and the first groove structure 201 can be regular or irregular. The arrangement and spacing between multiple third groove structures 111 can be arbitrarily set. Similarly, the arrangement and spacing between multiple first groove structures 201 can be arbitrarily set. For example, since the protective film is usually torn off from the edge, the edge of the film layer below the protective film is subjected to a large force, that is, the separation force on the edge of the second encapsulation layer 12 and the first encapsulation layer 11 is large, which can easily cause the second encapsulation layer 12 and the first encapsulation layer 11 to separate from the edge. To this end, the third groove structure 111 can be set with a larger density in the edge area of ​​the first encapsulation layer 11 and a smaller density in the area of ​​the first encapsulation layer 11 near the display area AA. The first groove structure 201 can be set with a larger density in the edge of the insulating layer 20 and a smaller density in the area of ​​the insulating layer 20 near the display area AA, so as to adapt to the magnitude of the separation force on the edge of the second encapsulation layer 12 and the first encapsulation layer 11 and avoid the second encapsulation layer 12 and the first encapsulation layer 11 from falling off when the protective film is torn off.

[0043] Furthermore, the top view of the third groove structure 111 and the first groove structure 201 can be arranged in a strip shape. The strip-shaped third groove structure 111 and the first groove structure 201 can also increase the contact area between the insulating layer 20, the second encapsulation layer 12 and the first encapsulation layer 11, thereby increasing the adhesion between the first encapsulation layer 11 and the underlying insulating layer 20, and increasing the adhesion between the first encapsulation layer 11 and the second encapsulation layer 12. This prevents the first encapsulation layer 11 or the second encapsulation layer 12 from falling off when the protective film is peeled off, thereby improving the yield rate of the display panel.

[0044] Furthermore, the cross-sectional shapes of the first groove structure 201 and the third groove structure 111 may be the same or different.

[0045] Optionally, the cross-sectional shape of the first groove structure 201 includes one or a combination of rectangular, trapezoidal, triangular, spherical, ellipsoidal or irregular shapes.

[0046] Specifically, when the cross-sectional shapes of the first groove structure 201 and the third groove structure 111 are the same, and the cross-sectional shape of the first groove structure 201 is one or a combination of rectangular, trapezoidal, triangular, spherical, ellipsoidal, or irregular shapes, the cross-sectional shape of the third groove structure 111 is also one or a combination of rectangular, trapezoidal, triangular, spherical, ellipsoidal, or irregular shapes. By setting the cross-sectional shapes of the first groove structure 201 and the third groove structure 111 to be one or a combination of rectangular, trapezoidal, triangular, spherical, ellipsoidal, or irregular shapes, the contact area between the insulating layer 20, the second encapsulation layer 12, and the first encapsulation layer 11 can be further increased. This increases the adhesion between the first encapsulation layer 11 and the underlying insulating layer 20, and the adhesion between the first encapsulation layer 11 and the second encapsulation layer 12, preventing the first encapsulation layer 11 or the second encapsulation layer 12 from falling off when the protective film is peeled off, thereby improving the yield rate of the display panel.

[0047] Furthermore, when the cross-sectional shapes of the first groove structure 201 and the third groove structure 111 are different, if the cross-sectional shape of the first groove structure 201 is rectangular, the cross-sectional shape of the third groove structure 111 is one or a combination of trapezoidal, triangular, spherical, ellipsoidal, or irregular shapes; if the cross-sectional shape of the first groove structure 201 is trapezoidal, the cross-sectional shape of the third groove structure 111 is one or a combination of rectangular, triangular, spherical, ellipsoidal, or irregular shapes, and so on, the cross-sectional shapes of the first groove structure 201 and the third groove structure 111 are different. Furthermore, if the cross-sectional shape of the first groove structure 201 is one or a combination of trapezoidal, triangular, spherical, ellipsoidal, or irregular shapes, the cross-sectional shape of the third groove structure 111 is rectangular, and so on, the cross-sectional shapes of the first groove structure 201 and the third groove structure 111 are different.

[0048] Optionally, the first groove structure 201 can have the same cross-sectional shape as the corresponding third groove structure 111. For example, if the first groove structure 201 has a rectangular cross-sectional shape and corresponds to the upper third groove structure 111, then the cross-sectional shape of the upper third groove structure 111 is also rectangular. This allows the third groove structure 111 and the first groove structure 201 to be etched using the same mask, reducing the number of masks used. Furthermore, it increases the contact area between the insulating layer 20, the second encapsulation layer 12, and the first encapsulation layer 11, thereby increasing the adhesion between the first encapsulation layer 11 and the lower insulating layer 20, and increasing the adhesion between the first encapsulation layer 11 and the second encapsulation layer 12.

[0049] Optionally, the thickness of the first groove structure 201 is less than or equal to the thickness of the insulating layer 20.

[0050] Specifically, when the first groove structure 201 is equal to the thickness of the insulating layer 20, it not only increases the contact area between the encapsulation layer 10 and the insulating layer 20, but also increases the contact area between the encapsulation layer 10 and the film layer below the insulating layer 20, which can prevent peeling of the encapsulation layer 10 when the protective film is peeled off.

[0051] Furthermore, Figure 4 This is a schematic diagram of the cross-sectional structure of another display panel provided in this embodiment of the present invention along section line AB, where section line AB is located at... Figure 1 On the display panel shown, as Figure 4 As shown, the display panel also includes an intermediate layer 50, and the insulating layer 20 is further provided with a second groove structure 202, and the slit 40 includes the second groove structure 202.

[0052] Furthermore, the intermediate layer 50 is located between the insulating layer 20 and the substrate 10, and the slit 40 extends from the insulating layer 20 to the intermediate layer 50, forming a groove in the intermediate layer 50.

[0053] The intermediate layer 50 may include a buffer layer, a gate insulating layer, a via layer, and other film layers of the display panel. The intermediate layer 50 is located between the insulating layer 20 and the substrate 10. When the first groove structure 201 is equal to the thickness of the insulating layer 20, it not only increases the contact area between the encapsulation layer 10 and the insulating layer 20, but also increases the contact area between the encapsulation layer 10 and the intermediate layer 50. This can improve the adhesion between the encapsulation layer 10 and the intermediate layer 50 and further prevent peeling of the encapsulation layer 10 when the protective film is peeled off.

[0054] Specifically, the insulating layer 20 is further provided with a second groove structure 202, and the slit 40 includes the second groove structure 202. The slit 40 extends from the insulating layer 20 to the intermediate layer 50, forming a groove in the intermediate layer 50. Therefore, the slit 40 and the first groove structure 201 can be etched using the same mask, reducing the number of masks used and the number of etching operations. Furthermore, since the slit 40 extends from the insulating layer 20 to the intermediate layer 50, forming a groove in the intermediate layer 50, the increased depth of the slit 40 further slows down the rate at which cracks extend to the display area AA. The slit 40 also further releases stress on the edge of the non-display area NA, preventing the display panel from cracking and avoiding display device packaging failure due to moisture and oxygen intrusion in the display area AA, thereby improving the yield rate of the display panel.

[0055] Optionally, the insulating layer 20 and the film layer below the insulating layer 20 can be made of one or both of SiOx and SiNx, both of which can serve as insulation.

[0056] This embodiment of the invention also provides another display panel. Figure 5 This is a plan view of another display panel provided in an embodiment of the present utility model. Figure 6 A schematic diagram of the cross-sectional structure of a display panel along section line CD is provided for an embodiment of this utility model, as shown below. Figure 5 and Figure 6 As shown, the display panel includes a display area AA and a non-display area NA surrounding the display area, and Bank1 and Bank2 are also provided in the non-display area NA. Figure 6The first groove structure 201, the third groove structure 111, the insulating layer 20, and the slit 40 shown are located only in the non-display area NA. The non-display area NA of the display panel also includes a signal line layer 60, a pixel definition layer 70, and a support layer 80. The first encapsulation layer 11 and the second encapsulation layer 12 cover the non-display area NA, thereby achieving TFE encapsulation of the display panel and preventing the display area AA from being corroded by external moisture and oxygen. Furthermore, the first encapsulation layer 11 and the second encapsulation layer 12 are inorganic encapsulation layers, and an organic encapsulation layer 13 (monomer) is provided between the first encapsulation layer 11 and the second encapsulation layer 12. Bank 1 and Bank 2 surround the display area AA, with at least one... Figure 5 Two banks are shown. One of the functions of Bank1 and Bank2 is to prevent the organic material of the organic encapsulation layer 13 from overflowing; therefore, the organic encapsulation layer 13 will stop before Bank1. By setting the first groove structure 201 and the third groove structure 111, the contact area between the first encapsulation layer 11, the second encapsulation layer 12 and the insulating layer 20 can be increased, thereby increasing the adhesion between the first encapsulation layer 11, the second encapsulation layer 12 and the insulating layer 20, and preventing the first encapsulation layer 11 or the second encapsulation layer 12 from falling off when the protective film is peeled off. By setting the slit 40, micro-cracks generated by cutting can be prevented from extending to the display area AA, preventing display device encapsulation failure, thereby greatly improving the yield of the display panel.

[0057] This utility model provides a display panel that improves the adhesion between the insulating layer and the encapsulation layer, preventing insufficient adhesion between the non-display area film layers from peeling off when the protective film is removed. It also releases the stress on the edge of the non-display area through a slit, preventing the display panel from cracking and greatly improving the yield rate of the display panel.

[0058] This utility model embodiment also provides a display device, including the display panel described in any of the above embodiments.

[0059] Specifically, the display device provided in this embodiment includes the display panel proposed in any of the above embodiments, and has the beneficial effects of the display panel proposed in the above embodiments, which will not be repeated here. For example, the display device can be a mobile phone, a wearable device with display function, a computer, or other display devices.

[0060] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments. Many other equivalent embodiments may be included without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A display panel, characterized in that, The display panel includes a display area and a non-display area surrounding the display area; The non-display area includes a stacked encapsulation layer, an insulating layer, and a substrate, with the insulating layer located between the encapsulation layer and the substrate; The contact surface between the insulating layer and the encapsulation layer is provided with a plurality of first groove structures, a portion of the encapsulation layer is filled in the first groove structures, and the plurality of first groove structures are all located in the non-display area; The insulating layer has multiple slits on the side away from the display area, and the projection of the encapsulation layer onto the insulating layer does not cover the slits.

2. The display panel according to claim 1, characterized in that, The encapsulation layer includes a first encapsulation layer and a second encapsulation layer; the first encapsulation layer is in contact with the insulating layer, and the second encapsulation layer is located on the side of the first encapsulation layer away from the insulating layer; A portion of the first encapsulation layer is filled in the first groove structure.

3. The display panel according to claim 2, characterized in that, The contact surface between the first encapsulation layer and the second encapsulation layer is provided with a plurality of third groove structures, a portion of the second encapsulation layer is filled in the third groove structures, and the plurality of third groove structures are all located in the non-display area.

4. The display panel according to claim 3, characterized in that, The plurality of third groove structures are arranged in a dot matrix, and the spacing between the third groove structures is the same; the plurality of first groove structures are arranged in a dot matrix, and the spacing between the first groove structures is the same.

5. The display panel according to claim 3, characterized in that, The first groove structure may have the same or different cross-sectional shape as the third groove structure.

6. The display panel according to claim 1, characterized in that, It also includes an intermediate layer, and the insulating layer is further provided with a second groove structure, the slit including the second groove structure.

7. The display panel according to claim 6, characterized in that, The intermediate layer is located between the insulating layer and the substrate, and the slit extends from the insulating layer to the intermediate layer, forming a groove in the intermediate layer.

8. The display panel according to claim 1, characterized in that, The thickness of the first groove structure is less than or equal to the thickness of the insulating layer.

9. The display panel according to claim 1, characterized in that, The cross-sectional shape of the first groove structure includes one or a combination of several of the following: rectangular, trapezoidal, triangular, spherical, ellipsoidal, or irregular shapes.

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

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