Display panel and display device

Abstract

The application discloses a display panel and a display device; the display panel comprises a pixel definition layer and a light-emitting functional layer; a plurality of openings and a first barrier wall surrounding a display area and the plurality of openings are formed in the pixel definition layer; the plurality of openings comprise a plurality of first openings arranged adjacent to the first barrier wall and a second opening arranged in the display area, and the plurality of first openings and the first barrier wall are located in a non-display area; the light-emitting functional layer is arranged at least in the first openings and in the second opening; the display panel comprises a plurality of side edges and a corner between adjacent side edges; at the corner, a side of the first barrier wall facing the display area is provided with a plurality of protrusions, so that the plurality of first openings are arranged in a concave-convex shape on a side close to the first barrier wall; the application can improve the film uniformity of the light-emitting functional layer, improve the light-emitting efficiency and display uniformity of the display panel, and simplify the process.

Description

Technical Field

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

[0002] Organic light-emitting diode (OLED) display panels possess advantages such as self-illumination, fast response, wide viewing angle, high brightness, vibrant colors, and thinness, and are considered the next generation of display technology. The main methods for thin-film deposition of OLEDs are vacuum evaporation and solution processing.

[0003] In inkjet printing, the solvent dries faster in the edge areas than in the display areas, resulting in poor ink film uniformity, especially in the corner areas of the display panel. Summary of the Invention

[0004] This application provides a display panel and display device that can improve the uniformity of the light-emitting functional layer, and improve the luminous efficiency and display uniformity of the display panel.

[0005] This application provides a display panel, which includes a display area and a non-display area adjacent to the display area;

[0006] A pixel definition layer is formed therein, wherein a plurality of openings are formed and a first barrier wall is arranged around the display area and the plurality of openings. The plurality of openings include a plurality of first openings arranged adjacent to the first barrier wall and a plurality of second openings arranged in the display area, and the plurality of first openings and the first barrier wall are all located in the non-display area.

[0007] A light-emitting functional layer is disposed at least within the first opening and the second opening;

[0008] The display panel includes multiple sides and corners located between adjacent sides. At the corners, the first barrier wall has multiple protrusions on the side facing the display area, so that the multiple first openings are arranged in a concave-convex shape on the side near the first barrier wall.

[0009] In one embodiment of this application, the protrusion has a first surface near the first opening, the first surface being adjacent to at least one of the first openings;

[0010] The number of first openings adjacent to the first surface in one of the protrusions is different from the number of first openings adjacent to the first surface in the other protrusion.

[0011] In one embodiment of this application, the number of first openings adjacent to each other on the first surface of two adjacent protrusions is different.

[0012] In one embodiment of this application, the light-emitting functional layer includes a light-emitting portion disposed within a portion of the opening;

[0013] At the corner, the multiple openings of the light-emitting part are arranged in a concave-convex shape at the boundary line of the display area to form multiple virtual steps, and the number of openings in one virtual step is different from the number of openings in another virtual step.

[0014] In one embodiment of this application, the light-emitting functional layer further includes a virtual portion disposed within another portion of the opening;

[0015] The virtual step is adjacent to at least one opening on which the virtual part is formed, and the number of openings on which the virtual part is formed adjacent to one virtual step is different from the number of openings on which the virtual part is formed adjacent to another virtual step.

[0016] In one embodiment of this application, the number of openings forming the virtual portion adjacent to one virtual step and the number of openings forming the virtual portion adjacent to the other virtual step are different.

[0017] In one embodiment of this application, the plurality of openings are arranged along a first direction and a second direction, wherein the first direction and the second direction intersect.

[0018] The first surface is perpendicular to the second direction, and the first surface is aligned with and adjacent to at least one of the first openings along the second direction.

[0019] In one embodiment of this application, at the corner, the plurality of first openings are divided into a plurality of opening groups, one opening group is aligned with and adjacent to a first surface along the second direction, and at least one of the first openings in one opening group is arranged along the first direction.

[0020] In one embodiment of this application, the plurality of sides include a first side and a second side located on both sides of the same corner, and the number of the first openings in the opening group near the first side is greater than the number of the first openings in the opening group near the second side.

[0021] In one embodiment of this application, the protrusion has a second surface near the first opening, the second surface being perpendicular to the first direction. Between two adjacent opening groups, one opening group is aligned with and adjacent to the first surface along the second direction, and the other opening group is aligned with and adjacent to the second surface along the first direction.

[0022] In one embodiment of this application, two adjacent opening groups are not overlapped along the first direction, and / or two adjacent opening groups are not overlapped along the second direction.

[0023] In one embodiment of this application, the plurality of openings further include a plurality of third openings disposed within the non-display area, the third openings being located on the side of the first opening away from the first retaining wall;

[0024] The third opening is located between the first opening and the second opening along the second direction, or the third opening is located between the first opening and the second opening along the first direction, and the light-emitting functional layer further includes a virtual part disposed within the third opening.

[0025] In one embodiment of this application, the plurality of openings further includes a fourth opening, which overlaps with the boundary line of the display area. The area of ​​the fourth opening located within the display area accounts for more than or equal to 50% of the opening area of ​​the fourth opening, and the light-emitting functional layer includes a light-emitting part disposed within the fourth opening.

[0026] And / or, the plurality of openings further includes a fifth opening, the fifth opening intersecting the boundary line of the display area, the area of ​​the fifth opening located in the non-display area accounting for more than 50% of the opening area of ​​the fifth opening, and the light-emitting functional layer including a virtual part disposed in the fifth opening.

[0027] In one embodiment of this application, the pixel definition layer further includes a plurality of second barriers and a plurality of third barriers. The second barriers extend along the second direction and are located between two adjacent openings along the first direction. The third barriers extend along the first direction and are located between two adjacent openings along the second direction. The height of the second barriers is greater than the height of the third barriers, and the width of the first barriers is greater than or equal to the width of the second barriers.

[0028] In one embodiment of this application, the light-emitting functional layers in the plurality of openings arranged along the second direction are made of the same material, and the light-emitting functional layers in two adjacent openings along the first direction are made of different materials. The light-emitting functional layer includes a virtual part disposed in the first opening and a light-emitting part disposed in the second opening, and the light-emitting part is configured to emit light and the virtual part is configured not to emit light.

[0029] In one embodiment of this application, the plurality of sides include a first side and a second side located on both sides of the same corner, wherein the length of the first surface of the protrusion near the first side along the first direction is greater than the length of the first surface of the protrusion near the second side along the first direction.

[0030] In one embodiment of this application, the side of the first barrier away from the display area is arc-shaped at the corner, and the radius of curvature of the first barrier near the first side at the corner is greater than the radius of curvature of the first barrier near the second side at the corner.

[0031] In one embodiment of this application, at the first side, there is a first gap between the side of the first barrier wall away from the display area and the boundary line of the display area, and at the second side, there is a second gap between the side of the first barrier wall away from the display area and the boundary line of the display area, wherein the first gap is greater than the second gap.

[0032] In one embodiment of this application, the distance between the side of the first retaining wall at the corner away from the display area and the boundary line of the display area gradually decreases along the direction from the first side to the second side.

[0033] In accordance with the above-mentioned objectives of this application, embodiments of this application also provide a display device, the display device including the display panel as described above.

[0034] This application provides a display panel and a display device. By providing a first opening in the non-display area of ​​the display panel and forming a light-emitting functional layer in the first opening, the solvent atmosphere of the light-emitting functional layer in the non-display area of ​​the display panel during inkjet printing is improved, the uniformity of solvent evaporation is improved, and the film formation uniformity of the light-emitting functional layer is improved, thereby improving the luminous efficiency and display uniformity of the display panel.

[0035] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0036] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the 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.

[0037] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings, wherein the same reference numerals in the following description denote the same parts.

[0038] Figure 1 A schematic diagram of a display panel at a corner provided in an embodiment of this application;

[0039] Figure 2 A schematic diagram of a cross-sectional structure of a pixel definition layer provided in an embodiment of this application;

[0040] Figure 3 This is a schematic diagram of the planar structure of the display panel provided in an embodiment of this application;

[0041] Figure 4 Provided for the embodiments of this application Figure 1 A magnified structural diagram at point a;

[0042] Figure 5 Another schematic diagram of the display panel at a corner provided in an embodiment of this application;

[0043] Figure 6 This is a schematic diagram of another cross-sectional structure of the pixel definition layer provided in an embodiment of this application;

[0044] Figure 7 A schematic diagram of a planar structure of a pixel definition layer provided in an embodiment of this application;

[0045] Figure 8 This is a schematic diagram of another planar structure of the pixel definition layer provided in the embodiments of this application;

[0046] Figure 9 This is a schematic diagram of a display device provided in an embodiment of this application.

[0047] Explanation of reference numerals in the attached figures:

[0048] AA, Display area; NA, Non-display area;

[0049] 10. Pixel Definition Layer; 11. First Barrier; 110. Protrusion; 1101. First Surface; 1102. Second Surface; 111. First Sub-layer; 112. Second Sub-layer; 12. Second Barrier; 121. Third Sub-layer; 122. Fourth Sub-layer; 13. Third Barrier; 14. Fourth Barrier; 101. Opening; 1010. Opening Group; 1011. First Opening; 1012. Second Opening; 1013. Third Opening; 1014. Fourth Opening; 1015. Fifth Opening; 102. Ink Storage Tank; 15. Side; 151. First Side; 152. Second Side; 16. Corner; 120. Virtual Step;

[0050] 20. Light-emitting functional layer; 21. Virtual part; 22. Light-emitting part;

[0051] 30. Array substrate; 31. Substrate; 32. Thin film transistor layer;

[0052] 40. Anode layer; 41. First anode; 42. Second anode;

[0053] 50. Driver components;

[0054] 60. Display device; 61. Display panel. Detailed Implementation

[0055] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the protection scope of this application.

[0056] Please refer to Figure 1 and Figure 2 This application provides a display panel, which includes a display area AA and a non-display area NA adjacent to the display area AA; the display panel also includes a pixel definition layer 10 and a light-emitting functional layer 20.

[0057] The pixel definition layer 10 has a plurality of openings 101 and a first barrier wall 11 surrounding the display area AA and the plurality of openings 101. The plurality of openings 101 include a plurality of first openings 1011 adjacent to the first barrier wall 11 and a plurality of second openings 1012 disposed within the display area AA. The plurality of first openings 1011 and the first barrier wall 11 are all located within the non-display area NA. The light-emitting functional layer 20 is disposed at least within the first openings 1011 and within the second openings 1012.

[0058] The display panel includes multiple sides 15 and corners 16 located between adjacent sides 15. At the corners 16, multiple protrusions 110 are provided on the side of the first barrier wall 11 facing the display area AA, so that the multiple first openings 1011 are arranged in a concave-convex shape on the side of the first barrier wall 11.

[0059] In the implementation process, this application embodiment provides a first opening 1011 in the non-display area NA of the display panel, and a light-emitting functional layer 20 can be formed in the first opening 1011. This improves the solvent atmosphere of the light-emitting functional layer 20 in the non-display area NA during the inkjet printing process, enhances the uniformity of solvent evaporation, and thus improves the film formation uniformity of the light-emitting functional layer 20. This can improve the luminous efficiency and display uniformity of the display panel.

[0060] Specifically, please refer to Figure 1 , Figure 2 as well as Figure 3 The display panel includes a display area AA and a non-display area NA adjacent to the display area AA, and the non-display area NA can be set around the display area AA; that is, the non-display area NA can be regarded as the border area of ​​the display area AA.

[0061] In some embodiments, the display panel includes an array substrate 30, an anode layer 40 disposed on the array substrate 30, a pixel definition layer 10, a light-emitting functional layer 20, and a cathode layer and an encapsulation layer disposed on the pixel definition layer 10.

[0062] In some embodiments, the array substrate 30 includes a substrate and a thin-film transistor layer 32 disposed on the substrate 31.

[0063] In some embodiments, substrate 31 may be a rigid substrate, such as a glass substrate; or substrate 31 may be a flexible substrate, such as a substrate formed of polyimide. When substrate 31 is a flexible substrate, substrate 31 may be formed of multiple sub-substrates of the same material, such as polyimide, and adjacent sub-substrates may be bonded together by adhesive sub-layers.

[0064] In some embodiments, the thin-film transistor layer 32 includes a thin-film transistor, which includes a semiconductor located on a substrate. The semiconductor may be formed of polycrystalline silicon or a metal oxide (such as indium gallium zinc oxide). The semiconductor is divided into a channel region and source and drain regions formed on either side of the channel region. The thin-film transistor layer also includes a first gate insulating layer covering the semiconductor. The thin-film transistor also includes a first gate formed on the first gate insulating layer, overlapping the channel region. The first gate may be formed as multiple layers or a single layer comprising a low-resistance material such as Al, Ti, Mo, Cu, Ni, or alloys thereof, or a material with high corrosion resistance. The thin-film transistor layer 32 also includes a second gate insulating layer covering the first gate. The thin-film transistor also includes a second gate located on the second gate insulating layer, overlapping the first gate. The second gate may be formed as multiple layers or a single layer comprising a low-resistance material such as Al, Ti, Mo, Cu, Ni, or alloys thereof, or a material with high corrosion resistance. The thin-film transistor layer also includes a first interlayer insulating layer formed on the second gate. The first interlayer insulating layer, the first gate insulating layer, and the second gate insulating layer include source contact holes and drain contact holes, and the source region and the drain region are exposed through the source contact holes and drain contact holes, respectively.

[0065] The thin-film transistor also includes a source and a drain disposed on the same layer. Both the source and drain are formed on the first interlayer insulating layer. The source is connected to the source region through a source contact hole, and the drain is connected to the drain region through a drain contact hole. The source and drain can be multiple layers or a single layer formed of low-resistance materials such as Al, Ti, Mo, Cu, Ni, or their alloys, or materials with high corrosion resistance. For example, the source and drain can be a triple layer of Ti / Cu / Ti, Ti / Ag / Ti, Ti / Al / Ti, or Mo / Al / Mo, or other single-layer or multi-layer structures.

[0066] In some embodiments, the thin-film transistor layer 32 further includes a planarization layer located on the side of the first interlayer insulating layer away from the substrate 31, the planarization layer covering the source and drain.

[0067] In some embodiments, the anode layer 40 is disposed on a planarization layer, and the anode layer 40 includes a plurality of first anodes 41 and a plurality of second anodes 42 disposed at intervals; wherein the second anodes 42 are located at least in the display area AA, and the first anodes 41 are located at least in the non-display area NA, and the second anodes 42 can be connected to the source or drain in the thin film transistor layer 32 to realize signal transmission.

[0068] In some embodiments, the pixel definition layer 10 is disposed on a planarization layer, and a plurality of openings 101 are formed in the pixel definition layer 10, at least within the display area AA; further, the plurality of openings 101 are simultaneously distributed within the display area AA and the non-display area NA.

[0069] Multiple openings 101 are correspondingly provided with multiple first anodes 41 and multiple second anodes 42; that is, multiple openings 101 can be distributed in the display area AA and the non-display area NA, and the opening 101 located in the display area AA can expose the surface of the corresponding second anode 42 away from the array substrate 30, and the opening 101 located in the non-display area NA can also expose the surface of the corresponding first anode 41 away from the array substrate 30.

[0070] In some embodiments, the light-emitting functional layer 20 is disposed within a plurality of openings 101 and is located on the surface of the second anode 42 or the first anode 41 on the side away from the array substrate 30 within the corresponding opening 101.

[0071] It should be noted that the display panel provided in this application embodiment requires inkjet printing to form the light-emitting functional layer 20. The light-emitting functional layer 20 is formed within the opening 101, and the light-emitting functional layer 20 can be prepared using inkjet printing. In the inkjet printing process, after the ink of the light-emitting functional layer 20 is formed, it needs to be cured to form a film, allowing the solvent in the ink to evaporate. However, the solvent evaporation rate at the edge of the display panel is faster, which can easily lead to uneven film thickness of the light-emitting functional layer 20, especially at the corner 16 of the display panel. In order to ensure the uniformity of the thickness of the light-emitting functional layer 20 by making the solvent atmosphere above the display panel uniform, this application embodiment provides an opening 101 in the non-display area NA to contain ink during the process, thereby increasing the solvent atmosphere at the edge of the display panel, balancing the solvent evaporation rate in different areas of the display panel, and thus effectively improving the film uniformity of the light-emitting functional layer 20 in the display panel, improving the luminous efficiency and yield of the display panel.

[0072] In some embodiments, the pixel definition layer 10 further includes a barrier wall disposed around a plurality of openings 101; specifically, the pixel definition layer 10 includes a first barrier wall 11 disposed around the display area AA and the plurality of openings 101, that is, the first barrier wall 11 surrounds the peripheral area of ​​the display area AA and is located within the non-display area NA, while the plurality of openings 101 are located within the area enclosed by the first barrier wall 11.

[0073] Furthermore, the pixel definition layer 10 also includes a plurality of second barriers 12 and a plurality of third barriers 13. The second barriers 12 extend along the second direction Y, and the plurality of second barriers 12 are arranged along the first direction X. The third barriers 13 extend along the first direction X, and the plurality of third barriers 13 are arranged along the second direction Y. Thus, the plurality of second barriers 12 and the plurality of third barriers 13 intersect each other and together with the first barrier 11 enclose a plurality of openings 101.

[0074] In this embodiment, the first direction X and the second direction Y intersect; in some embodiments, the first direction X and the second direction Y may be perpendicular.

[0075] Among the multiple openings 101, the outermost ring of openings 101 is formed by the first retaining wall 11, the second retaining wall 12, and the third retaining wall 13.

[0076] Among them, the multiple openings 101 include a first opening 1011 adjacent to the first barrier wall 11 and a second opening 1012 located in the display area AA; that is, the outermost ring of openings 101 is the first opening 1011, and the first opening 1011 is located in the non-display area NA.

[0077] In this embodiment, the light-emitting functional layer 20 includes a virtual portion 21 disposed in the first opening 1011 and a light-emitting portion 22 disposed in the second opening 1012.

[0078] It is understandable that the opening 101 with the light-emitting part 22 can perform the light-emitting function, while the opening 101 with the virtual part 21 does not have the light-emitting function and can be used to contain ink in the inkjet printing process.

[0079] In some embodiments, the plurality of openings 101 further includes a plurality of third openings 1013 located within the non-display area NA, and the third openings 1013 are located between the first openings 1011 and the second openings 1012 along the second direction Y, or the third openings 1013 are located between the first openings 1011 and the second openings 1012 along the first direction X. The light-emitting functional layer 20 further includes a virtual portion 21 disposed within the third openings 1013.

[0080] In some embodiments, please combine Figure 1 , Figure 3 as well as Figure 4 The multiple openings 101 also include a fourth opening 1014, which overlaps with the boundary line of the display area AA. The area of ​​the fourth opening 1014 located in the display area AA accounts for more than or equal to 50% of the opening area of ​​the fourth opening 1014. The light-emitting function 20 includes a light-emitting part 22 disposed in the fourth opening 1014.

[0081] In some embodiments, please combine Figure 1 , Figure 3 as well as Figure 4 The multiple openings 101 also include a fifth opening 1015, which overlaps with the boundary line of the display area AA. The area of ​​the fifth opening 1015 located in the non-display area NA accounts for more than 50% of the opening area of ​​the fifth opening 1015. The light-emitting functional layer 20 includes a virtual part 21 disposed in the fifth opening 1015.

[0082] It is understood that the multiple openings 101 in the embodiments of this application may overlap with the boundary line of the display area AA, and the embodiments of this application distinguish whether the opening 101 has a light-emitting function by the size of its area within the display area AA.

[0083] In this embodiment, the first opening 1011 can expose the surface of the first anode 41 away from the array substrate 30, the second opening 1012 can expose the surface of the second anode 42 away from the array substrate 30, the third opening 1013 can expose the surface of the first anode 41 away from the array substrate 30, the fourth opening 1014 can expose the surface of the second anode 42 away from the array substrate 30, and the fifth opening 1015 can expose the surface of the first anode 41 away from the array substrate 30. Furthermore, the virtual part 21 can be disposed in the first opening 1011, the third opening 1013, and the fifth opening 1015, and located on the first anode 41 in the corresponding opening 101. The light-emitting part 22 can be disposed in the second opening 1012 and the fourth opening 1014, and located on the second anode 42 in the corresponding opening 101.

[0084] In some embodiments, the light-emitting functional layer 20 may include at least one of a hole injection layer, a hole transport layer, and a light-emitting layer disposed within the opening 101; wherein, the hole injection layer is located between the hole transport layer and the anode, the hole transport layer is located on the side of the hole injection layer away from the anode, and the light-emitting layer is located on the side of the hole transport layer away from the hole injection layer; and the hole injection layer, the hole transport layer, and the light-emitting layer may all be prepared using an inkjet printing process; when the light-emitting functional layer 20 contains a light-emitting layer, the light-emitting functional layer 20 has a light-emitting function.

[0085] It is understood that the display panel may also include an electron transport layer and an electron injection layer disposed sequentially on the side of the light-emitting functional layer 20 away from the array substrate 30, and the electron transport layer and the electron injection layer may be prepared by vapor deposition process.

[0086] In some embodiments, the cathode layer is disposed on the side of the light-emitting functional layer 20 away from the anode layer 40, and the cathode layer is disposed on the entire surface, which can continuously cover multiple openings 101.

[0087] The encapsulation layer is disposed on the side of the cathode layer away from the light-emitting functional layer 20, and the encapsulation layer may include a first inorganic encapsulation layer covering the cathode layer, an organic encapsulation layer covering the first inorganic encapsulation layer, and a first inorganic encapsulation layer covering the organic encapsulation layer; wherein, the first inorganic encapsulation layer and the second inorganic encapsulation layer may include inorganic materials with the function of blocking water vapor, such as silicon nitride, silicon oxide, or silicon oxynitride; while the material of the organic encapsulation layer may include organic resin materials, which can play a role in buffering stress; thus, the encapsulation layer can play a role in blocking water vapor and buffering stress, so as to protect the underlying cathode layer, light-emitting functional layer 20, and anode layer 40.

[0088] In some embodiments, the display panel includes a plurality of sides 15 and a corner 16 located between two adjacent sides 15; for example, the display panel can be quadrilateral, such as... Figure 3 As shown, the display panel has four sides 15 and corners 16 located between two adjacent sides 15, and the number of corners 16 is four.

[0089] At corner 16, a plurality of protrusions 110 are provided on the side of the first barrier wall 11 near the display area AA, and a plurality of first openings 1011 can be distributed to fit the shape of the plurality of protrusions 110, so that the plurality of first openings 1011 on the side near the first barrier wall 11 are arranged in a concave-convex shape, such as wavy or sawtooth shape; and the size of the first opening 1011 located in the non-display area NA is the same as the size of the second opening 1012 in the display area AA, that is, in the embodiment of this application, the size of the first opening 1011 and the size of the second opening 1012 are the same, and can be prepared using the same process conditions, thereby simplifying the process.

[0090] In some embodiments, the size of the first opening 1011 may include the width of the first opening 1011 along the first direction X and the length of the first opening 1011 along the second direction Y; similarly, the size of the second opening 1012 may include the width of the second opening 1012 along the first direction X and the length of the second opening 1012 along the second direction Y.

[0091] In some embodiments, the dimensions of the third opening 1013, the fourth opening 1014, and the fifth opening 1015 can all be the same as the dimensions of the first opening 1011; wherein, the dimensions of the third opening 1013 include the width of the third opening 1013 along the first direction X and the length of the third opening 1013 along the second direction Y, the dimensions of the fourth opening 1014 include the width of the fourth opening 1014 along the first direction X and the length of the fourth opening 1014 along the second direction Y, and the dimensions of the fifth opening 1015 include the width of the fifth opening 1015 along the first direction X and the length of the fifth opening 1015 along the second direction Y.

[0092] The embodiments of this application further simplify the process and reduce the difficulty of the process by setting the dimensions of the first opening 1011, the second opening 1012, the third opening 1013, the fourth opening 1014 and the fifth opening 1015 to be the same.

[0093] It is understandable that the opening 101 in the pixel definition layer 10 can have a structure that is wider at the top and narrower at the bottom, that is, the opening width of the opening 101 on the side closer to the array substrate 30 is smaller than the opening width of the opening 101 on the side farther away from the array substrate 30.

[0094] In some embodiments, the light-emitting functional layers 20 in the plurality of openings 101 arranged along the second direction Y are made of the same material, while the light-emitting functional layers 20 in two adjacent openings 101 along the first direction X are made of different materials; that is, in this embodiment, the light-emitting portions 22 in the plurality of openings 101 arranged along the second direction Y can emit light of the same color, while the light-emitting portions 22 in two adjacent openings 101 along the first direction X emit light of different colors.

[0095] In some embodiments, the second barrier 12 extends along the second direction Y and is located between two adjacent openings 101 along the first direction X, and the third barrier 13 extends along the first direction X and is located between two adjacent openings 101 along the second direction Y. The height of the second barrier 12 is greater than the height of the third barrier 13. Thus, the second barrier 12 can be used to block the overflow of ink between two adjacent openings 101 along the first direction X, while the height of the third barrier 13 is smaller, which allows the ink to flow within the multiple openings 101 arranged along the second direction Y, thereby improving ink leveling and enhancing the film uniformity of the light-emitting functional layer 20.

[0096] In addition, in this embodiment, the side of the first barrier wall 11 away from the display area AA is arc-shaped at the corner 16, and the multiple first openings 1011 are arranged in a concave-convex shape. Thus, while ensuring that the size of the first opening 1011 is the same as the size of the second opening 1012, it can also be set to fit the arc shape of the first barrier wall 11 as much as possible. That is to say, while simplifying the process difficulty of the opening 101, the number of openings 101 at the corner 16 can be increased. And according to the turning change of the corner 16, the openings 101 are arranged accordingly, which can help improve the uniformity of the solvent atmosphere for ink evaporation at the corner 16 of the display panel and help improve the film formation uniformity of the light-emitting functional layer 20.

[0097] Furthermore, in some embodiments, at the corner 16, the boundary line of the display area AA is also arc-shaped, and the radius of curvature of the boundary line of the display area AA can be the same as the radius of curvature of the side of the first barrier wall 11 away from the display area AA. This makes the distribution of the opening 101 between the boundary line of the display area AA and the first barrier wall 11 more uniform, which is beneficial to improving the uniformity of ink distribution in the opening 101 during the inkjet printing process of the display panel and improving the film formation uniformity of the light-emitting functional layer 20.

[0098] When the boundary line of the display area AA is also arc-shaped, and the radius of curvature of the boundary line of the display area AA is the same as the radius of curvature of the side of the first barrier wall 11 away from the display area AA, then the number of openings 101 distributed between the boundary line of the display area AA and the first barrier wall 11 can be uniform. That is, at each corner 16, the number of openings 101 distributed between the boundary line of the display area AA and the first barrier wall 11 can be uniform, specifically including the number of first openings 1011 and third openings 1013.

[0099] In some embodiments, at the side 15 parallel to the second direction Y, the number of openings 101 arranged along the first direction X between the first barrier wall 11 and the boundary line of the display area AA is greater than or equal to 1 and less than or equal to 20; furthermore, at the corner 16 and the side 15 parallel to the first direction Y, the number of openings 101 arranged along the second direction Y between the first barrier wall 11 and the boundary line of the display area AA is greater than or equal to 1 and less than or equal to 20.

[0100] In other embodiments, at corner 16, the boundary line of display area AA is also arc-shaped, and the radius of curvature of the boundary line of display area AA can be different from the radius of curvature of the side of the first retaining wall 11 away from display area AA. Thus, the display panel provided in this application embodiment can be adaptively adjusted according to different size and border width requirements. For example, if the border widths at the sides 15 on both sides of the same corner 16 are different, the radius of curvature of the first retaining wall 11 at corner 16 can be changed according to the change in border width to improve the applicability of the display panel.

[0101] It is understood that the embodiments provided in this application... Figure 1 For example, the boundary line of the display area AA is also set in an arc shape, and the radius of curvature of the boundary line of the display area AA can be different from the radius of curvature of the side of the first retaining wall 11 away from the display area AA.

[0102] Since the boundary of the display area AA and the first barrier wall 11 in this embodiment are both arc-shaped at the corner 16, and the opening 101 that overlaps with the boundary line of the display area AA needs to be selected for emitting light or not emitting light according to the area ratio within the display area AA, the arrangement of the multiple openings 101 at the corner 16 in this embodiment is described below.

[0103] In some embodiments, a plurality of protrusions 110 are provided on the side of the first barrier 11 near the display area AA, and a plurality of first openings 1011 are distributed to conform to the shape of the plurality of protrusions 110, so that the plurality of first openings 1011 are arranged in a concave-convex shape on the side near the first barrier 11; wherein, the protrusion 110 has a first surface 1101 on the side near the first opening 1011, and the first surface 1101 is adjacent to at least one first opening 1011; and the number of first openings 1011 adjacent to the first surface 1101 of one protrusion 110 is different from the number of first openings 1011 adjacent to the first surface 1101 of another protrusion 110. In other embodiments of this application, the number of first openings 1011 adjacent to the first surface 1101 of one protrusion 110 may also be the same as the number of first openings 1011 adjacent to the first surface 1101 of another protrusion 110.

[0104] In some embodiments, the number of first openings 1011 adjacent to the first surface 1101 in two adjacent protrusions 110 is different. In other embodiments of this application, the number of first openings 1011 adjacent to the first surface 1101 in two adjacent protrusions 110 may also be the same.

[0105] Since the opening 101 that overlaps with the boundary line of the display area AA is determined to be used for display based on the area ratio within the display area AA, and the boundary line of the display area AA is set in an arc shape, the opening 101 used for display is arranged in a concave-convex shape at the boundary line of the display area AA.

[0106] In some embodiments, the light-emitting functional layer 20 includes a light-emitting portion 22 disposed within a partial opening 101; at the corner 16, a plurality of openings 101 on which the light-emitting portion 22 is formed are arranged in a concave-convex manner at the boundary line of the display area AA to form a plurality of virtual steps 120, wherein the number of openings 101 in one virtual step 120 is different from the number of openings 101 in another virtual step 120. In other embodiments of this application, the number of openings 101 in one virtual step 120 may also be the same as the number of openings 101 in another virtual step 120.

[0107] In some embodiments, the light-emitting functional layer 20 further includes a virtual portion 21 disposed within another portion of the opening 101; the virtual step 120 is adjacent to at least one opening 101 having a virtual portion 21, and the number of openings 101 having a virtual portion 21 adjacent to one virtual step 120 is different from the number of openings 101 having a virtual portion 21 adjacent to another virtual step 120. In other embodiments of this application, the number of openings 101 having a virtual portion 21 adjacent to one virtual step 120 and the number of openings 101 having a virtual portion 21 adjacent to another virtual step 120 may also be the same.

[0108] In some embodiments, the number of openings 101 with virtual portions 21 adjacent to one virtual step 120 and the number of openings 101 with virtual portions 21 adjacent to the other virtual step 120 are different; in other embodiments of this application, the number of openings 101 with virtual portions 21 adjacent to one virtual step 120 and the number of openings 101 with virtual portions 21 adjacent to the other virtual step 120 may also be the same.

[0109] It should be noted that in the above embodiment, the virtual step 120 is adjacent to the opening 101 on which the virtual part 21 is formed. Specifically, the step surface of the virtual step 120 perpendicular to the second direction Y is adjacent to the opening 101 on which the virtual part 21 is formed.

[0110] Specifically, the arrangement of the multiple openings 101 will be described in detail below with reference to the structure of the first barrier wall 11 on the side near the display area AA, and the curvature radius of the boundary line of the display area AA can be different from the curvature radius of the side of the first barrier wall 11 away from the display area AA.

[0111] In this embodiment, the radius of curvature of the first barrier 11 on the side away from the display area AA will change. At the same time, the size of the multiple protrusions 110 on the side of the first barrier 11 close to the display area AA will also change accordingly. This allows the first barrier 11 to effectively block the side of the first opening 1011 away from the display area AA while keeping the size unchanged, thus preventing ink overflow.

[0112] In some embodiments, the protrusion 110 has a first surface 1101 near the first opening 1011, the first surface 1101 being perpendicular to the second direction Y, the first surface 1101 being aligned and adjacent to at least one first opening 1011 along the second direction Y, that is, the first surface 1101 being parallel to the first direction X, and being used to block the overflow of ink in the plurality of openings 101 arranged along the second direction Y; in addition, the protrusion 110 has a second surface 1102 near the first opening 1011, the second surface 1102 being perpendicular to the first direction X, that is, the second surface 1102 being aligned and adjacent to the first opening 1011 along the first direction X, and being parallel to the second direction Y, the second surface 1102 being used to block the overflow of ink along the first direction X.

[0113] It is understandable that both the first surface 1101 and the second surface 1102 can be reused as the inner wall of the first opening 1011.

[0114] In some embodiments, at the corner 16, a plurality of first openings 1011 are divided into a plurality of opening groups 1010. An opening group 1010 is aligned with and adjacent to a first surface 1101 along the second direction Y, and a plurality of first openings 1011 within an opening group 1010 are arranged along the first direction X. That is, in this embodiment, at least one first opening 1011 aligned with and adjacent to a first surface 1101 is divided into an opening group 1010, thereby dividing a plurality of opening groups 1010 corresponding to the plurality of first surfaces 1101 of a plurality of protrusions 110.

[0115] The number of first openings 1011 in two adjacent opening groups 1010 is different, or the number of first openings 1011 in two adjacent opening groups 1010 is the same.

[0116] In some embodiments, between two adjacent opening groups 1010, one opening group 1010 is aligned and adjacent to the first surface 1101 along the second direction Y, and the other opening group 1010 is aligned and adjacent to the second surface 1102 along the first direction X; that is, a protrusion 110 can be disposed adjacent to two adjacent opening groups 1010, and the first surface 1101 and the second surface 1102 of a protrusion 110 can be reused as the inner wall of the first opening 1011 in the two opening groups 1010 respectively.

[0117] In some embodiments, two adjacent opening groups 1010 are not overlapped along the first direction X, and / or, two adjacent opening groups 1010 are not overlapped along the second direction Y; further, when the first direction X and the second direction Y are perpendicular, two adjacent opening groups 1010 are not overlapped along the first direction X, and two adjacent opening groups 1010 are not overlapped along the second direction Y; that is, multiple protrusions 110 are arranged in a stepped shape along the arc of the first retaining wall 11, and the step surface (i.e., the first surface 1101) of each step can be correspondingly set with an opening group 1010, and the number of first openings 1011 in the opening group 1010 can be set according to the length of the corresponding first surface 1101.

[0118] In some embodiments, the length of the second surface 1102 along the second direction Y can be equal to the sum of the width of the third retaining wall 13 along the second direction Y and the length of the first opening 1011 along the second direction Y; and the length of each first opening 1011 along the second direction Y is the same, thereby the length of the second surface 1102 of each protrusion 110 along the second direction Y is equal.

[0119] In one specific embodiment of this application, the plurality of sides 15 include a first side 151 and a second side 152 located on both sides of the same corner 16. The border width of the display panel at the first side 151 is greater than the border width at the second side 152. That is, at the first side 151, there is a first gap L1 between the side of the first barrier wall 11 away from the display area AA and the boundary line of the display area AA. At the second side 152, there is a second gap L2 between the side of the first barrier wall 11 away from the display area AA and the boundary line of the display area AA. The first gap L1 is greater than the second gap L2. Correspondingly, the number of openings 101 between the boundary line of the display area AA and the first barrier wall 11 at the first side 151 is greater than the number of openings 101 between the boundary line of the display area AA and the first barrier wall 11 at the second side 152.

[0120] Specifically, the side of the first barrier wall 11 furthest from the display area AA is arc-shaped at corner 16. The radius of curvature of the first barrier wall 11 at corner 16 near the first side 151 is greater than the radius of curvature of the first barrier wall 11 at corner 16 near the second side 152. That is, on the side near the first side 151, the side of the first barrier wall 11 furthest from the display area AA is arc-shaped and has a first radius of curvature. On the side near the second side 152, the side of the first barrier wall 11 furthest from the display area AA is arc-shaped and has a second radius of curvature. The first radius of curvature is greater than the second radius of curvature. The boundary line of the display area AA is arc-shaped at corner 16, and the radius of curvature remains unchanged.

[0121] In other words, as the required width of the frame at the first side 151 increases, the curvature of the first barrier wall 11 near the first side 151 decreases and the radius of curvature increases, which in turn helps to increase the distance between the first barrier wall 11 and the boundary line of the display area AA, so that the display panel can meet the requirement that the frame width at the first side 151 is greater than the frame width at the second side 152.

[0122] Furthermore, the length of the first surface 1101 of the protrusion 110 near the first side 151 along the first direction X is greater than the length of the first surface 1101 of the protrusion 110 near the second side 152 along the first direction X; thereby, the number of first openings 1011 in the opening group 1010 near the first side 151 is greater than the number of first openings 1011 in the opening group 1010 near the second side 152.

[0123] In some embodiments, the number of first openings 1011 adjacent to the first surface 1101 of each protrusion 110 gradually decreases along the direction of the first side 151 near the second side 152; that is, the number of first openings 1011 in each opening group 1010 gradually decreases along the direction of the first side 151 near the second side 152.

[0124] It is understood that, according to the different requirements of the bezel width for different sides 15, the curvature radius of the first barrier wall 11 can be set differently to meet the width transition change of the bezel width of the display panel at the corner 16. At the same time, the length of the first surface 1101 of the protrusion 110 on the side of the first barrier wall 11 near the display area AA is also changed with the change of the curvature radius, so that the arrangement and number of the first openings 1011 also change with the change of the curvature radius of the first barrier wall 11. This ensures that, while simplifying the process difficulty of the openings 101, the uniformity of the distribution of the openings 101, the uniformity of ink solvent evaporation, and the uniformity of the film formation of the light-emitting functional layer 20 can be improved.

[0125] In some embodiments, the radius of curvature of the first barrier 11 on the side away from the display area AA gradually decreases along the direction of the first side 151 toward the second side 152.

[0126] In some embodiments, the distance between the side of the first barrier wall 11 away from the display area AA and the boundary line of the display area AA at the corner 16 gradually decreases along the direction of the first side 151 towards the second side 152; and furthermore, at the corner 16, the number of openings 101 between the first barrier wall 11 and the boundary line of the display area AA gradually decreases along the direction of the first side 151 towards the second side 152.

[0127] In some embodiments, please refer to Figure 3The first side 151 of the display panel can be the binding side of the display panel. The display panel also includes a driving component 50, which is disposed at the first side 151. That is to say, the frame width of the display panel on the binding side needs to be larger. Therefore, in this embodiment, the distance between the first barrier 11 on the binding side and the boundary line of the display area AA can be set to be larger.

[0128] In some embodiments, please refer to Figure 5 The number of openings 101 in the virtual step 120 near the first side 151 is greater than the number of openings 101 in the virtual step 120 near the second side 152; correspondingly, the number of openings 101 adjacent to the virtual part 21 formed in the virtual step 120 near the first side 151 is greater than the number of openings 101 adjacent to the virtual part 21 formed in the virtual step 120 near the second side 152.

[0129] Furthermore, based on the changes in the width of the display panel's border and the curvature of the boundary line of the display area AA, the opening 101 with the light-emitting part 22 can be arranged to fit the shape, thereby increasing the display effect of the display panel at the curved corner 16 and avoiding jagged display edges.

[0130] In other embodiments, the number of openings 101 in the virtual step 120 gradually decreases along the direction from the first side 151 to the second side 152; correspondingly, the number of openings 101 with virtual portions 21 adjacent to the virtual step 120 gradually decreases along the direction from the first side 151 to the second side 152.

[0131] Furthermore, the barrier structure in the pixel definition layer 10 will be described below with reference to specific embodiments.

[0132] In some embodiments, such as Figure 2 As shown, the second retaining wall 12, the third retaining wall 13, and the first retaining wall 11 can all be single-layer membrane structures.

[0133] In other embodiments, such as Figure 6 , Figure 7 as well as Figure 8 As shown, the second retaining wall 12 and the first retaining wall 11 are both double-layer structures, while the third retaining wall 13 is a single-layer structure.

[0134] The first barrier 11 may include a first sub-layer 111 and a second sub-layer 112 stacked together, with the first sub-layer 111 located between the second sub-layer 112 and the array substrate 30; the second barrier 12 includes a third sub-layer 121 and a fourth sub-layer 122 stacked together, with the third sub-layer 121 located between the fourth sub-layer 122 and the array substrate 30; and the third barrier 13 includes a third sub-layer 121.

[0135] Furthermore, the third sub-layer 121 can be arranged along the first direction X and the second direction Y to form a mesh, wherein the third sub-layer 121 extending along the first direction X can constitute the third retaining wall 13; further, the fourth sub-layer 122 can extend along the second direction Y and is located on the third sub-layer 121 extending along the second direction Y; then the third sub-layer 121 extending along the second direction Y and the fourth sub-layer 122 extending along the second direction Y are stacked to form the second retaining wall 12.

[0136] In some embodiments, the first sublayer 111 and the third sublayer 121 belong to the same film layer, are made of the same material, and can be formed in the same process; the second sublayer 112 and the fourth sublayer 122 belong to the same film layer, are made of the same material, and can be formed in the same process.

[0137] In some embodiments, please refer to Figure 1 as well as Figure 3 The pixel definition layer 10 also includes at least one fourth barrier wall 14 disposed on the side of the first barrier wall 11 away from the display area AA. The fourth barrier wall 14 is disposed around a plurality of openings 101. An ink reservoir 102 is also formed in the pixel definition layer 10. The ink reservoir 102 is located at least between the first barrier wall 11 and the fourth barrier wall 14. It is understood that the ink reservoir 102 can be disposed around at least one side 15 of the display area AA, and the ink reservoir 102 can increase the amount of ink stored in the non-display area NA of the display panel. This can further improve the uniformity of the solvent atmosphere when the solvent evaporates during the inkjet printing process, improve the film formation uniformity of the light-emitting functional layer 20, and improve the luminous efficiency and display uniformity of the display panel.

[0138] Furthermore, since the first barrier wall 11 has multiple protrusions 110 at the corner 16, the width distribution of the first barrier wall 11 at the corner 16 is uneven; and the minimum width of the first barrier wall 11 at the corner 16 is greater than or equal to the width of the second barrier wall 12, which can reduce the probability of ink overflowing from the ink reservoir 102 into the opening 101, reduce the probability of ink mixing, and improve the yield of the display panel; for example, when the width of the second barrier wall 12 is 12 micrometers, the minimum width of the first barrier wall 11 at the corner 16 is greater than or equal to 12 micrometers.

[0139] In some embodiments, the side of the fourth barrier wall 14 closest to the first barrier wall 11 is arranged parallel to the side of the first barrier wall 11 closest to the fourth barrier wall 14. Further, the side of the fourth barrier wall 14 furthest from the first barrier wall 11 is also arranged parallel to the side of the first barrier wall 11 closest to the fourth barrier wall 14. That is, the fourth barrier wall 14 can also be set as an arc at the corner 16, and the radius of curvature of the arc is the same as that of the first barrier wall 11. Therefore, the pixel definition layer 10 of the display panel provided in this application embodiment is arc at the corner 16, which can be applied to rounded corner display panels.

[0140] In some embodiments, the number of fourth baffles 14 can be multiple, and ink storage grooves 102 can also be formed between adjacent fourth baffles 14 to further increase the amount of ink stored at the edge of the display panel and further improve the film uniformity of the light-emitting functional layer 20.

[0141] Continuing on the above, the display panel provided in this application may have multiple corners 16, and at least one corner 16 in the display panel may be configured as described in the above embodiments, or all corners 16 may be configured as described in the above embodiments; or, in some corners 16, the length of the first surface 1101 of each protrusion 110 along the first direction X may be differentiated, while in another part of the corners 16, the length of the first surface 1101 of each protrusion 110 along the first direction X may be the same, or in all corners 16, the length of the first surface 1101 of each protrusion 110 along the first direction X may be differentiated, or in all corners 16, the length of the first surface 1101 of each protrusion 110 along the first direction X may be the same.

[0142] Furthermore, the ink reservoir 102 may also be located only at a portion of the corner 16 and a portion of the side 15 of the display panel, as provided in this embodiment. Figure 3 The text is only used to illustrate the case where the ink reservoir 102 is located at all corners 16 and all sides 15 of the display panel.

[0143] In summary, this embodiment of the application improves the solvent atmosphere in the non-display area NA of the display panel by providing a first opening 1011 within the non-display area NA of the display panel and forming a virtual portion 21 within the first opening 1011. This improves the uniformity of solvent evaporation, thereby enhancing the film uniformity of the light-emitting functional layer 20 and improving the luminous efficiency and display uniformity of the display panel. Furthermore, the size of the first opening 1011 in the non-display area is the same as the size of the second opening 1012 in the display area, which simplifies the process. In this embodiment, the first barrier 11 is far from... The side away from the display area AA is arc-shaped at corner 16, and multiple first openings 1011 are arranged in a concave-convex shape. This allows the size of the first opening 1011 to be the same as that of the second opening 1012, while also fitting the arc shape of the first baffle 11 as closely as possible. In other words, while simplifying the manufacturing process of the openings 101, the number of openings 101 at corner 16 can be increased. Furthermore, the openings 101 can be arranged according to the changes in the corner 16, which can help improve the uniformity of the solvent atmosphere for ink evaporation at corner 16 of the display panel and improve the film uniformity of the light-emitting functional layer 20.

[0144] Please refer to Figure 9This application embodiment also provides a display device 60, which includes the display panel 61 as described above.

[0145] In some embodiments, the display device 60 may include a computer, television, mobile phone, tablet, watch, and virtual reality display device.

[0146] It is understood that since the display device 60 has the same display panel 61 as in the above embodiments, the display device 60 has the same beneficial effects as the display panel 61, which will not be described again here.

[0147] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0148] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0149] The embodiments, implementation methods, and related technical features of this application can be combined and substituted for each other without conflict.

[0150] The above are merely preferred embodiments of this application and are not intended to limit this application in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the scope of the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. A display panel, characterized in that, The display panel includes a display area and a non-display area adjacent to the display area; A pixel definition layer is formed therein, wherein a plurality of openings are formed and a first barrier wall is arranged around the display area and the plurality of openings. The plurality of openings include a plurality of first openings arranged adjacent to the first barrier wall and a plurality of second openings arranged in the display area, and the plurality of first openings and the first barrier wall are all located in the non-display area. A light-emitting functional layer is disposed at least within the first opening and the second opening; The display panel includes multiple sides and corners located between adjacent sides. At the corners, the first barrier wall has multiple protrusions on the side facing the display area, so that the multiple first openings are arranged in a concave-convex shape on the side near the first barrier wall. The protrusion has a first surface near the first opening, the first surface being adjacent to at least one of the first openings; The number of first openings adjacent to the first surface in one of the protrusions is different from the number of first openings adjacent to the first surface in the other protrusion.

2. The display panel according to claim 1, characterized in that, The number of first openings adjacent to each other on the first surface of two adjacent protrusions is different.

3. The display panel according to claim 1, characterized in that, The light-emitting functional layer includes a light-emitting part disposed within a portion of the opening; At the corner, the multiple openings of the light-emitting part are arranged in a concave-convex shape at the boundary line of the display area to form multiple virtual steps, and the number of openings in one virtual step is different from the number of openings in another virtual step.

4. The display panel according to claim 3, characterized in that, The light-emitting functional layer also includes a virtual portion disposed within another portion of the opening; The virtual step is adjacent to at least one opening on which the virtual part is formed, and the number of openings on which the virtual part is formed adjacent to one virtual step is different from the number of openings on which the virtual part is formed adjacent to another virtual step.

5. The display panel according to claim 4, characterized in that, In two adjacent virtual steps, the number of openings forming the virtual portion adjacent to one virtual step is different from the number of openings forming the virtual portion adjacent to the other virtual step.

6. The display panel according to claim 1, characterized in that, The plurality of openings are arranged along a first direction and a second direction, the first direction and the second direction intersecting; The first surface is perpendicular to the second direction, and the first surface is aligned with and adjacent to at least one of the first openings along the second direction.

7. The display panel according to claim 6, characterized in that, At the corner, the plurality of first openings are divided into a plurality of opening groups, one of the opening groups being aligned with and adjacent to a first surface along the second direction, and at least one of the first openings in one of the opening groups being arranged along the first direction.

8. The display panel according to claim 7, characterized in that, The plurality of sides include a first side and a second side located on both sides of the same corner, wherein the number of first openings in the opening group near the first side is greater than the number of first openings in the opening group near the second side.

9. The display panel according to claim 7, characterized in that, The protrusion has a second surface near the first opening, the second surface being perpendicular to the first direction. Between two adjacent opening groups, one opening group is aligned with and adjacent to the first surface along the second direction, and the other opening group is aligned with and adjacent to the second surface along the first direction.

10. The display panel according to claim 7, characterized in that, Two adjacent opening groups are not overlapped along the first direction, and / or two adjacent opening groups are not overlapped along the second direction.

11. The display panel according to claim 6, characterized in that, The plurality of openings also include a plurality of third openings disposed within the non-display area, the third openings being located on the side of the first opening away from the first retaining wall; The third opening is located between the first opening and the second opening along the second direction, or the third opening is located between the first opening and the second opening along the first direction, and the light-emitting functional layer further includes a virtual part disposed within the third opening.

12. The display panel according to claim 6, characterized in that, The plurality of openings also includes a fourth opening, which overlaps with the boundary line of the display area. The area of ​​the fourth opening located within the display area accounts for more than or equal to 50% of the opening area of ​​the fourth opening. The light-emitting functional layer includes a light-emitting part disposed within the fourth opening. And / or, the plurality of openings further includes a fifth opening, the fifth opening intersecting the boundary line of the display area, the area of ​​the fifth opening located in the non-display area accounting for more than 50% of the opening area of ​​the fifth opening, and the light-emitting functional layer including a virtual part disposed in the fifth opening.

13. The display panel according to claim 6, characterized in that, The pixel definition layer further includes a plurality of second barriers and a plurality of third barriers. The second barriers extend along the second direction and are located between two adjacent openings along the first direction. The third barriers extend along the first direction and are located between two adjacent openings along the second direction. The height of the second barriers is greater than the height of the third barriers, and the width of the first barriers is greater than or equal to the width of the second barriers.

14. The display panel according to any one of claims 6 to 13, characterized in that, The light-emitting functional layers in the plurality of openings arranged along the second direction are made of the same material, and the light-emitting functional layers in two adjacent openings along the first direction are made of different materials. The light-emitting functional layer includes a virtual part disposed in the first opening and a light-emitting part disposed in the second opening, and the light-emitting part is configured to emit light and the virtual part is configured not to emit light.

15. The display panel according to any one of claims 6 to 13, characterized in that, The plurality of sides include a first side and a second side located on both sides of the same corner, wherein the length of the first surface of the protrusion near the first side along the first direction is greater than the length of the first surface of the protrusion near the second side along the first direction.

16. The display panel according to claim 15, characterized in that, The side of the first barrier away from the display area is arc-shaped at the corner, and the radius of curvature of the first barrier near the first side at the corner is greater than the radius of curvature of the first barrier near the second side at the corner.

17. The display panel according to claim 15, characterized in that, At the first side, there is a first gap between the side of the first barrier wall away from the display area and the boundary line of the display area; at the second side, there is a second gap between the side of the first barrier wall away from the display area and the boundary line of the display area; the first gap is greater than the second gap.

18. The display panel according to claim 15, characterized in that, The distance between the side of the first retaining wall at the corner away from the display area and the boundary line of the display area gradually decreases along the direction from the first side to the second side.

19. A display device, characterized in that, The display device includes a display panel as described in any one of claims 1 to 18.

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