Display panel and display device

Abstract

The application relates to a display panel and a display device; the display panel comprises multiple side edges and corners connected between adjacent side edges; the display panel comprises a display area and a non-display area adjacent to the display area; wherein a pixel definition layer is provided with multiple openings in the display area and the non-display area and a first barrier wall in the non-display area; the first barrier wall is arranged around the display area and the multiple openings; the multiple openings comprise multiple first openings and multiple second openings; the first openings are located in the display area; the second openings are at least located in the non-display area and adjacent to the first barrier wall; a light-emitting functional layer is arranged in at least the first openings and the second openings; wherein at least at the corners, the size of at least part of the second openings is smaller than the size of the first openings, or the size of at least part of the second openings is larger than the size of the first openings; the application can improve the uniformity of ink solvent volatilization and the film forming uniformity of the light-emitting part at the corners.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of display, in particular to a display panel and a display device. BACKGROUND

[0002] Organic Light-Emitting Diode (OLED) display panel has the advantages of self-illumination, fast response, wide viewing angle, high brightness, bright color, thinness, etc., and is considered as the next generation of display technology. The thin film deposition methods of organic light-emitting diode mainly include vacuum evaporation and solution process.

[0003] In the inkjet printing process, the drying rate of the solvent in the inkjet printing edge area is faster than that in the display area, which further leads to poor film forming uniformity of the ink, especially in the corner area of the display panel. SUMMARY

[0004] Embodiments of the present application provide a display panel and a display device, which can improve the film forming uniformity of the light emitting functional layer in the display panel.

[0005] Embodiments of the present application provide a display panel, which comprises a plurality of side edges and a corner connected between adjacent side edges, and the display panel comprises a display area and a non-display area adjacent to the display area.

[0006] The display panel further comprises:

[0007] A pixel definition layer, a plurality of openings in the display area and the non-display area and a first barrier wall in the non-display area are formed in the pixel definition layer, and the first barrier wall is arranged around the display area and the plurality of openings, the plurality of openings comprise a plurality of first openings and a plurality of second openings, the first openings are located in the display area, and the second openings are at least located in the non-display area and adjacent to the first barrier wall.

[0008] A light emitting functional layer is arranged at least in the first openings and the second openings.

[0009] At least in the corner, the size of at least part of the second openings is smaller than the size of the first openings, or the size of at least part of the second openings is larger than the size of the first openings.

[0010] In an embodiment of the present application, in the corner, the size of at least part of the second openings near the center of the corner is larger than the size of the second openings near the side edge.

[0011] In an embodiment of the present application, the pixel definition layer further comprises a plurality of second barriers and a plurality of third barriers located within the enclosed area of the first barrier, the plurality of second barriers are arranged along a first direction, the second barriers extend along a second direction, the first direction intersects the second direction, the plurality of third barriers are arranged along the second direction, the third barriers extend along the first direction;

[0012] The pixel definition layer further comprises a first ink reservoir located on a side of the first barrier away from the display area, and at least at the corner, a minimum distance between the second opening and the first ink reservoir is less than or equal to a width of the second barrier, or a minimum distance between the second opening and the first ink reservoir is less than or equal to a width of the third barrier.

[0013] In an embodiment of the present application, when at least part of the second opening has a size greater than that of the first opening;

[0014] At the corner, the second opening is located between the first barrier and the third barrier along the second direction, at least part of the third barrier extends from the display area to the non-display area, a portion of the third barrier extending into the non-display area is adjacent to at least one second opening along the second direction, and the third barrier is spaced apart from the first barrier at both ends thereof along the first direction.

[0015] In an embodiment of the present application, when at least part of the second opening has a size less than that of the first opening;

[0016] At least at the corner, opposite ends of the second barrier along the second direction are connected to the first barrier, and opposite ends of the third barrier along the first direction are connected to the first barrier.

[0017] In an embodiment of the present application, the second barrier has a height greater than that of the third barrier, the plurality of second barriers, the plurality of third barriers intersect each other, and together with the first barrier define a plurality of openings;

[0018] The first opening is located between two adjacent third barriers along the second direction, and the first opening is located between two adjacent second barriers along the first direction;

[0019] The second opening is located between the first barrier and the third barrier along the second direction, and the second opening is located between two adjacent second barriers along the first direction.

[0020] In an embodiment of the present application, when at least part of the second opening has a size smaller than that of the first opening, at least at the corner, the length of the portion of the second barrier wall adjacent to the second opening in the second direction is smaller than the length of the portion of the second barrier wall adjacent to the first opening in the second direction.

[0021] When at least part of the second opening has a size larger than that of the first opening, at least at the corner, the length of the portion of the second barrier wall adjacent to the second opening in the second direction is larger than the length of the portion of the second barrier wall adjacent to the first opening in the second direction.

[0022] In an embodiment of the present application, the boundary of the display area is arc-shaped at the corner of the display panel and has a first radius of curvature, and the first ink reservoir is arc-shaped at the corner of the display panel and has a second radius of curvature, the first radius of curvature being equal to the second radius of curvature.

[0023] In an embodiment of the present application, at least one second ink reservoir is further formed in the pixel definition layer on a side of the first ink reservoir away from the display area, the second ink reservoir being arranged around a plurality of the openings;

[0024] In an embodiment of the present application, the second ink reservoir is arc-shaped at the corner of the display panel and has the second radius of curvature.

[0025] In an embodiment of the present application, the pixel definition layer further comprises at least two fourth barrier walls on a side of the first barrier wall away from the display area, the first ink reservoir being between the first barrier wall and the fourth barrier wall, and the second ink reservoir being between two adjacent fourth barrier walls;

[0026] In an embodiment of the present application, the fourth barrier wall is arc-shaped at the corner and has the second radius of curvature.

[0027] In an embodiment of the present application, a plurality of the openings are arranged along a first direction and a second direction, the first direction intersecting the second direction;

[0028] At least at the corner, the length of at least part of the second opening in the second direction is smaller than the length of the first opening in the second direction.

[0029] In an embodiment of the present application, a plurality of the openings are arranged along a first direction and a second direction, the first direction intersecting the second direction;

[0030] At least at the corner, a length of the second opening along the second direction is greater than a length of the first opening along the second direction.

[0031] In an embodiment of the present application, for the second opening adjacent to the first barrier wall along the second direction, a sidewall of the first barrier wall close to a side of the display area is multiplexed as an inner wall of the second opening away from the side of the display area.

[0032] In an embodiment of the present application, materials of the light-emitting functional layer in two openings adjacent along the first direction are different, and materials of the light-emitting functional layer in a plurality of openings arranged along the second direction are same, the light-emitting functional layer includes a light-emitting part arranged in the first opening and a virtual part arranged in the second opening, and the light-emitting part is configured to emit light, and the virtual part is configured to not emit light.

[0033] In an embodiment of the present application, the plurality of openings further include a plurality of third openings, the third openings overlap with a boundary of the display area, and an area of the third openings located in the display area accounts for greater than or equal to 50% of a total area of the third openings, and the third openings are arranged with the light-emitting part;

[0034] And / or, the plurality of openings further include a plurality of fourth openings, the fourth openings overlap with the boundary of the display area, and an area of the fourth openings located in the non-display area accounts for greater than 50% of a total area of the fourth openings, and the fourth openings are arranged with the virtual part.

[0035] In an embodiment of the present application, at least at the corner of the display panel, the third openings are arranged between the first openings and the second openings arranged along the second direction;

[0036] Or, at least at the corner, the fourth openings are arranged between the first openings and the second openings arranged along the second direction;

[0037] Or, at least at the corner, the first openings and the second openings arranged along the second direction are arranged adjacently.

[0038] In an embodiment of the present application, at least at the corner, when a size of at least part of the second opening is smaller than a size of the first opening, the plurality of openings further include a fifth opening arranged in the non-display area, the fifth opening is located between the second opening and the boundary of the display area, and the light-emitting functional layer further includes the virtual part arranged in the fifth opening;

[0039] At least at the corner, the fifth opening is located between the first opening and the second opening arranged along the second direction;

[0040] Alternatively, at least at the corner, the fifth opening is located between the third opening and the second opening arranged along the second direction.

[0041] Alternatively, at least at the corner, the fifth opening is located between the fourth opening and the second opening arranged along the second direction.

[0042] In an embodiment of the present application, a length of the fifth opening along the second direction is equal to a length of the first opening along the second direction.

[0043] In an embodiment of the present application, at the corner, a first spacing between the boundary of the display area and the first barrier rib is equal to a second spacing between the boundary of the display area and the first barrier rib at the side.

[0044] In order to achieve the above-mentioned purposes, the embodiments of the present application further provide a display device, which comprises the display panel.

[0045] The display panel and the display device provided by the present application can improve the uniformity of the ink solvent volatilization at the corner, and improve the film forming uniformity of the light emitting part.

[0046] Other features and advantages of the present application will be described in detail in the following specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0047] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort based on these drawings.

[0048] For a more complete understanding of the present application and the advantages thereof, reference is now made to the following descriptions taken in connection with the accompanying drawings in which:

[0049] Figure 1 A structural schematic view of a display panel at a corner according to an embodiment of the present application;

[0050] Figure 2 A cross-sectional structural schematic view of a display panel according to an embodiment of the present application;

[0051] Figure 3 A planar structural schematic view of a display panel according to an embodiment of the present application;

[0052] Figure 4 Another structural schematic view of a display panel at a corner according to an embodiment of the present application;

[0053] Figure 5 A structural schematic view of a display panel according to an embodiment of the present application; Figure 1 An enlarged structural schematic view of the middle B;

[0054] Figure 6 A structural schematic view of a display device according to an embodiment of the present application.

[0055] Legend of reference signs:

[0056] 10, pixel definition layer; 11, first barrier wall; 12, second barrier wall; 13, third barrier wall; 14, fourth barrier wall; 101, opening; 1011, first opening; 1012, second opening; 1013, third opening; 1014, fourth opening; 1015, fifth opening; 102, first ink storage groove; 103, second ink storage groove; 15, side edge; 16, corner;

[0057] 20, light emitting functional layer; 21, light emitting part; 22, virtual part;

[0058] 30, array substrate; 31, substrate; 32, thin film transistor layer;

[0059] 40, anode layer; 41, first anode; 42, second anode;

[0060] 50, display device; 51, display panel. DETAILED DESCRIPTION

[0061] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by a person of ordinary skill in the art without creative effort should fall within the protection scope of the present application.

[0062] Please refer to Figure 1 and Figure 2 The display panel provided by the embodiments of the present application includes a plurality of side edges 15 and corners 16 connected between adjacent side edges 15, and the display panel includes a display area AA and a non-display area NA adjacent to the display area AA.

[0063] The display panel further includes a pixel definition layer 10 and a light-emitting functional layer 20; the pixel definition layer 10 is formed with a plurality of openings 101 located in the display area AA and the non-display area NA and a first barrier wall 11 located in the non-display area NA, and the first barrier wall 11 is arranged around the display area AA and the plurality of openings 101, the plurality of openings 101 include a plurality of first openings 1011 and a plurality of second openings 1012, the first openings 1011 are located in the display area AA, and the second openings 1012 are at least located in the non-display area NA and adjacent to the first barrier wall 11; the light-emitting functional layer 20 is at least arranged in the plurality of first openings 1011 and the plurality of second openings 1012.

[0064] In at least the corners, the size of at least part of the second openings is smaller than the size of the first openings, or the size of at least part of the second openings is larger than the size of the first openings.

[0065] In the implementation process, the embodiments of the present application set the second openings 1012 located in the non-display area NA at the corners 16 of the display panel, and then the light-emitting functional layer 20 can be arranged in the second openings 1012, and then in the forming process of the light-emitting functional layer 20, the second openings 1012 can be used to accommodate ink, so as to improve the ink capacity at the corners 16, improve the uniformity of the evaporation of the ink solvent at the corners 16, and be beneficial to improve the film forming uniformity of the light-emitting part 21; and the size of the second openings 1012 is different from the size of the first openings 1011 in the display area NA, that is, the size of the second openings 1012 can be adjusted according to the shape of the corners 16 to be set in accordance with the topography of the corners 16, which is beneficial to improve the uniformity of accommodating ink at the corners 16, and further improve the uniformity of the evaporation of the ink solvent at the corners 16 and the film forming uniformity of the light-emitting part 21.

[0066] Specifically, please refer to Figure 1 , Figure 2 and Figure 3The 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 arranged around the display area AA; that is, the non-display area NA can be regarded as a frame area of the display area AA.

[0067] In some embodiments, the display panel includes an array substrate 30, an anode layer 40 arranged on the array substrate 30, a pixel definition layer 10, a light-emitting functional layer 20, and a cathode layer and an encapsulation layer arranged on the pixel definition layer 10.

[0068] In some embodiments, the array substrate 30 includes a substrate 31 and a thin-film transistor layer 32 arranged on the substrate 31.

[0069] In some embodiments, the substrate 31 can be a hard substrate, such as a glass substrate; or the substrate 31 can be a flexible substrate, such as a substrate 31 formed of polyimide. When the substrate 31 is a flexible substrate, the substrate 31 can be formed of multiple sub-substrates made of the same material, such as polyimide, and adjacent sub-substrates are bonded by a bonding sub-layer.

[0070] In some embodiments, the thin-film transistor layer 32 includes a thin-film transistor including a semiconductor on a substrate, which can be formed of polycrystalline silicon or metal oxide (such as indium gallium zinc oxide). The semiconductor is divided into a channel region and a source region and a drain region formed on both sides of the channel region. The thin-film transistor layer further includes a first gate insulating layer covering the semiconductor. The thin-film transistor further includes a first gate formed on the first gate insulating layer, the first gate overlapping the channel region. The first gate can be formed of multiple layers or a single layer including a low-resistance material such as Al, Ti, Mo, Cu, Ni, or an alloy thereof, or a material having high corrosion resistance. The thin-film transistor layer further includes a second gate insulating layer covering the first gate. The thin-film transistor further includes a second gate on the second gate insulating layer, the second gate overlapping the first gate, which can be formed of multiple layers or a single layer including a low-resistance material such as Al, Ti, Mo, Cu, Ni, or an alloy thereof, or a material having high corrosion resistance. The thin-film transistor layer further includes a first interlayer insulating layer formed on the second gate. The first interlayer insulating layer and the first gate insulating layer and the second gate insulating layer include a source contact hole and a drain contact hole, and the source region and the drain region are respectively exposed through the source contact hole and the drain contact hole.

[0071] The thin film transistor further comprises a source electrode and a drain electrode arranged in the same layer, both of which are formed on the first interlayer insulating layer, the source electrode is connected with the source electrode region through the source electrode contact hole, and the drain electrode is connected with the drain electrode region through the drain electrode contact hole. The source electrode and the drain electrode can be multiple layers or a single layer formed by a low-resistance material such as Al, Ti, Mo, Cu, Ni, or an alloy thereof, or a material with high corrosion resistance. For example, the source electrode and the drain electrode can be a triple layer of Ti / Cu / Ti, Ti / Ag / Ti, Ti / Al / Ti, or Mo / Al / Mo, or other single layer or multiple layer structures.

[0072] In some embodiments, the thin film transistor layer 32 further comprises a planar layer on the side of the first interlayer insulating layer away from the substrate 31, and the planar layer covers the source electrode and the drain electrode.

[0073] In some embodiments, the anode layer 40 is arranged on the planar layer, and the anode layer 40 comprises a plurality of first anodes 41 and a plurality of second anodes 42 arranged at intervals; the first anodes 41 are located at least in the display area AA, and the second anodes 42 are located at least in the non-display area NA, and the first anodes 41 can be connected with the source electrode or the drain electrode in the thin film transistor layer 32 to realize signal transmission.

[0074] In some embodiments, the pixel definition layer 10 is arranged on the planar layer, and the pixel definition layer 10 comprises a plurality of openings 101 located at least in the display area AA, and the plurality of openings 101 are arranged corresponding to the plurality of first anodes 41 and the plurality of second anodes 42; that is, the plurality of openings 101 can be distributed in the display area AA and the non-display area NA, and the first anode 41 corresponding to the opening 101 can expose the side surface of the first anode 41 away from the array substrate 30, and the second anode 42 corresponding to the opening 101 can also expose the side surface of the second anode 42 away from the array substrate 30.

[0075] In some embodiments, the plurality of openings 101 are arranged along a first direction X and a second direction Y, the first direction X and the second direction Y intersect, and further preferably, the first direction X and the second direction Y are perpendicular.

[0076] In some embodiments, the light-emitting functional layer 20 is arranged in the plurality of openings 101, and the first anode 41 or the second anode 42 in the corresponding opening 101 is arranged on the side surface of the first anode 41 or the second anode 42 away from the array substrate 30.

[0077] In some embodiments, the pixel definition layer 10 comprises a barrier structure arranged around each opening 101; specifically, the pixel definition layer 10 comprises a first barrier 11, a plurality of second barriers 12 arranged between adjacent openings 101, and a plurality of third barriers 13; wherein the first barrier 11 is arranged around the display area AA and the plurality of openings 101, that is, the first barrier 11 is a ring of barriers around the periphery of the plurality of openings 101, and the second barriers 12 are connected to the first barrier 11 at opposite ends in the second direction Y, and the third barriers 13 are connected to the first barrier 11 at opposite ends in the first direction X or are arranged spaced apart from the first barrier 11; the plurality of second barriers 12 are arranged in the first direction X, the second barriers 12 extend in the second direction Y, the plurality of third barriers 13 are arranged in the second direction Y, and the third barriers 13 extend in the first direction X, that is, the plurality of second barriers 12 and the plurality of third barriers 13 are arranged in a cross manner, and together with the first barrier 11 define the plurality of openings 101.

[0078] It should be noted that the second barriers 12 extend into the non-display area NA in the second direction Y, and the third barriers 13 extend into the non-display area NA in the first direction X. Among them, a plurality of openings 101 arranged in the second direction Y are arranged between two adjacent second barriers 12 in the first direction X, and the third barriers 13 are arranged between two adjacent openings 101 in the second direction Y.

[0079] Further, the material of the light-emitting functional layer 20 in the plurality of openings 101 arranged in the second direction Y is the same, and the material of the light-emitting functional layer 20 in two adjacent openings 101 in the second direction Y is different. And the height of the second barrier 12 is greater than the height of the third barrier 13, and then the second barrier 12 can block the flow of ink between the adjacent openings 101 in the second direction Y to prevent color mixing; and the third barrier 13 can make the ink between the adjacent openings 101 in the second direction Y overflow to improve the film uniformity.

[0080] It can be understood that the ink in the openings 101 at the two ends in the second direction Y cannot further overflow, and then the film uniformity of the light-emitting functional layer 20 in the openings 101 at the two ends in the second direction Y is poor; and in the embodiment of the present application, the same ink can flow in the plurality of openings 101 arranged in the second direction Y during inkjet printing, specifically from the first opening 1011 in the display area AA to the second opening 1012 in the non-display area NA, and then the light-emitting functional layer 20 with poor film uniformity is formed in the second opening 1012, that is, a virtual part 22 is formed, and is not used for light emission, and then the film uniformity of the light-emitting part 21 can be effectively improved, and the display uniformity of the display panel is improved.

[0081] The plurality of openings 101 are distributed in the display area AA and in the non-display area NA, and at least some of the openings 101 in the non-display area NA can accommodate ink in the process of manufacturing the light-emitting functional layer 20, so as to improve the uniformity of solvent evaporation at the edge of the display panel and improve the film uniformity of the light-emitting functional layer 20.

[0082] In some embodiments, the plurality of openings 101 include a plurality of first openings 1011 arranged in the display area AA and a plurality of second openings 1012 arranged at least in the non-display area NA, and the plurality of second openings 1012 are adjacent to the first barrier wall 11, that is, the plurality of second openings 1012 are the outermost circle of the plurality of openings 101.

[0083] In some embodiments, the light-emitting functional layer 20 includes a light-emitting part 21 arranged in the first opening 1011 and a dummy part 22 arranged in the second opening 1012. It can be understood that the light-emitting part 21 can have a light-emitting function, and the material of the dummy part 22 is the same as that of the light-emitting part 21, but the dummy part 22 does not have a light-emitting function.

[0084] In some embodiments, the light-emitting functional layer 20 can include at least one of a hole injection layer, a hole transport layer, and a light-emitting layer arranged in 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 can be prepared by an inkjet printing process.

[0085] It can be understood that the display panel can further include an electron transport layer and an electron injection layer arranged in sequence 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 can be prepared by an evaporation process.

[0086] In some embodiments, the cathode layer is arranged on the side of the light-emitting functional layer 20 away from the anode layer 40, and the cathode layer is arranged as a whole, which can continuously cover the plurality of openings 101.

[0087] The encapsulation layer is arranged on the side of the cathode layer away from the light-emitting functional layer 20, and the encapsulation layer can 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 can include inorganic materials having a water vapor barrier effect, such as silicon nitride, silicon oxide, or silicon oxynitride; and the material of the organic encapsulation layer can include organic resin materials, which can play a role in buffering stress; then 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 the embodiments of the present application, the display panel includes a plurality of sides 15 and corners 16 connected between adjacent two sides 15; for example, the display panel can be quadrilateral, and the display panel has four sides 15 and corners 16 between adjacent two sides 15, and the number of corners 16 is four.

[0089] It can be understood that, due to the turning of the display panel at the corners 16, the structure at the corners 16 is more complex than that at the sides 15, and in the inkjet printing process of the display panel, the light-emitting functional layer 20 is more prone to uneven film formation at the corners 16.

[0090] In the embodiments of the present application, at least at the corners 16, the size of at least part of the second openings 1012 is smaller than the size of the first openings 1011, or the size of at least part of the second openings 1012 is larger than the size of the first openings 1011, wherein the second openings 1012 can be used to accommodate ink, so as to increase the ink capacity at the corners 16, improve the uniformity of ink solvent evaporation at the corners 16, and facilitate the improvement of the film formation uniformity of the light-emitting part 21; and the size of the second openings 1012 is different from the size of the first openings 1011 in the display area NA, that is, the size of the second openings 1012 can be adjusted according to the shape of the corners 16, so as to be set to fit the topography of the corners 16, which is conducive to improving the uniformity of accommodating ink at the corners 16, and further improving the uniformity of ink solvent evaporation at the corners 16 and the film formation uniformity of the light-emitting part 21.

[0091] The first openings 1011 are located between adjacent two third barriers 13 in the second direction Y, and the second openings 1012 are located between adjacent first barriers 11 and third barriers 13 in the second direction Y; the first openings 1011 are located between adjacent two second barriers 12 in the first direction X, and the second openings 1012 are located between adjacent two second barriers 12 in the first direction X.

[0092] That is, the first openings 1011 are formed by the second barriers 12 and the third barriers 13, and the second openings 1012 are formed by the first barriers 11, the second barriers 12 and the third barriers 13, and for the second openings 1012 adjacent to the first barriers 11 in the second direction Y, the side wall of the first barrier 11 close to the display area AA is reused as the inner wall of the second opening 1012 away from the display area AA.

[0093] In some embodiments, the width of the first opening 1011 along the first direction X is the same as the width of the second opening 1012 along the first direction X, and the length of the first opening 1011 along the second direction Y is different from the length of the second opening 1012 along the second direction Y, i.e., the size of the first opening 1011 in the above embodiments is considered as the length of the first opening 1011 along the second direction Y, and the size of the second opening 1012 is considered as the length of the second opening 1012 along the second direction Y.

[0094] That is, at least at the corner 16, the length of the second opening 1012 along the second direction Y is less than the length of the first opening 1011 along the second direction Y, or the length of the second opening 1012 along the second direction Y is greater than the length of the first opening 1011 along the second direction Y.

[0095] Further, please refer to Figure 1 , Figure 2 , Figure 3 and Figure 5 , it is also possible that part of the opening 101 overlaps with the boundary of the display area AA in the display panel, and the light emitting part 21 can be arranged in the part of the opening 101 overlapping with the boundary of the display area AA, or the virtual part 22 can be arranged in the part of the opening 101 overlapping with the boundary of the display area AA.

[0096] Specifically, the plurality of openings 101 further include a plurality of third openings 1013 and a plurality of fourth openings 1014, the third opening 1013 overlaps with the boundary of the display area AA, the area of the third opening 1013 located in the display area AA accounts for more than or equal to 50% of the total area of the third opening 1013, and the light emitting part 21 is arranged in the third opening 1013.

[0097] The fourth opening 1014 overlaps with the boundary of the display area AA, the area of the fourth opening 1014 located in the non-display area NA accounts for more than 50% of the total area of the fourth opening, and the virtual part 22 is arranged in the fourth opening 1014.

[0098] In some embodiments, the third opening 1013 and the fourth opening 1014 can be located between the first opening 1011 and the second opening 1012; at least at the corner 16 of the display panel, the third opening 1013 is arranged between the first opening 1011 and the second opening 1012 arranged along the second direction Y; or the fourth opening 1014 is arranged between the first opening 1011 and the second opening 1012 arranged along the second direction Y; or the first opening 1011 and the second opening 1012 arranged along the second direction Y are arranged adjacently, i.e., the region between the first opening 1011 and the second opening 1012 arranged along the second direction Y overlaps with the boundary of the display area AA.

[0099] In a specific embodiment of the present application, please refer toFigure 1 At least part of the second opening 1012 has a size smaller than that of the first opening 1011.

[0100] That is, at least part of the second opening 1012 has a length along the second direction Y smaller than that of the first opening 1011.

[0101] Wherein, at the side 15 and the corner 16, the second barrier wall 12 and the third barrier wall 13 both extend into the non-display area NA, and the plurality of openings 101 further comprises a fifth opening 1015 formed in the non-display area NA, the fifth opening 1015 is located between the second opening 1012 and the boundary of the display area AA, and the light-emitting functional layer 20 further comprises a virtual part 22 arranged in the fifth opening 1015; the length of the fifth opening 1015 along the second direction Y is equal to that of the first opening 1011.

[0102] At least at the corner 16, the fifth opening 1015 is located between the first opening 1011 and the second opening 1012 arranged along the second direction Y; or, at least at the corner 16, the fifth opening 1015 is located between the third opening 1013 and the second opening 1012 arranged along the second direction Y; or, at least at the corner 16, the fifth opening 1015 is located between the fourth opening 1014 and the second opening 1012 arranged along the second direction Y.

[0103] It should be noted that the fifth opening 1015 can also be distributed at the side 15 of the display panel, and the fifth opening 1015 at the side 15 can also be located between the first opening 1011 and the second opening 1012 arranged along the second direction Y; or, the fifth opening 1015 is located between the third opening 1013 and the second opening 1012 arranged along the second direction Y; or, the fifth opening 1015 is located between the fourth opening 1014 and the second opening 1012 arranged along the second direction Y.

[0104] In addition, the fifth opening 1015 at the side 15 can also be located between the first opening 1011 and the second opening 1012 arranged along the first direction X; or, the fifth opening 1015 is located between the third opening 1013 and the second opening 1012 arranged along the first direction X; or, the fifth opening 1015 is located between the fourth opening 1014 and the second opening 1012 arranged along the first direction X.

[0105] That is, the second barrier wall 12 and the third barrier wall 13 are arranged in the same extension direction and at the same interval in the display area AA and the non-display area NA, and at the side edge 15 and the corner 16. However, when the second barrier wall 12 and the third barrier wall 13 are connected to the first barrier wall 11 at the corner 16, the first barrier wall 11 is set to a specific shape, such as an arc, due to the corner 16 of the display panel for product requirements. When the second barrier wall 12, the third barrier wall 13, and the arc-shaped first barrier wall 11 are connected, the opening 101 formed by the three walls is an irregularly shaped opening or a second opening 1012 with a size smaller than that of the first opening 1011.

[0106] It should be noted that, according to the shape of the first barrier wall 11 at the corner 16, the second barrier wall 12 and the third barrier wall 13 are connected to the first barrier wall 11 to form a plurality of irregularly shaped second openings 1012, and the length of the second opening 1012 along the second direction Y is smaller than the length of the first opening 1011 along the second direction Y. However, the distribution of the plurality of openings 101 can be set to match the shape of the corner 16, which is beneficial to the uniform distribution of ink at the corner 16, thereby improving the solvent evaporation atmosphere at the corner 16 and improving the film uniformity of the light-emitting functional layer 20.

[0107] In the present embodiment, when at least part of the second opening 1012 has a size smaller than that of the first opening 1011, at least at the corner 16, the length of the part of the second barrier wall 12 adjacent to the second opening 1012 along the second direction Y is smaller than the length of the part of the second barrier wall 12 adjacent to the first opening 1011 along the second direction Y.

[0108] In another specific embodiment of the present application, please refer to Figure 4 , at least part of the second opening 1012 has a size larger than that of the first opening 1011.

[0109] Further, the length of the second opening 1012 along the second direction Y is greater than the length of the first opening 1011 along the second direction Y.

[0110] In the present embodiment, at the corner 16 of the display panel, the second barrier wall 12 extends into the non-display area NA and is connected to the first barrier wall 11. However, only part of the third barrier wall 13 extends into the non-display area NA and is not connected to the first barrier wall 11, that is, the third barrier wall 13 is spaced apart from the first barrier wall 11 at the corner 16.

[0111] Specifically, at the corner 16, the second openings 1012 are located between the first barrier wall 11 and the third barrier wall 13 along the second direction Y, at least part of the third barrier wall 13 is extended to the non-display area NA by the display area AA, the part of the third barrier wall 13 extended to the non-display area NA is adjacent to at least one second opening 1012 along the second direction Y, and the number of the third barrier wall 13 extended to the non-display area NA adjacent to the second opening 1012 along the second direction Y can be one, two, three or more; and the two ends of the third barrier wall 13 along the first direction X are spaced apart from the first barrier wall 11.

[0112] Wherein, at the corner 16, the third barrier wall 13 is extended along the first direction X and is cut off at the boundary of the display area AA or is cut off after extending to one or two openings 101 beyond the boundary of the display area AA, and the second barrier wall 12 is extended along the second direction Y and is connected to the first barrier wall 11; therefore, at the corner 16, at least part of the second openings 1012 adjacent to the first barrier wall 11 are extended along the second direction Y to the boundary of the display area AA, and are not interrupted by the third barrier wall 13 during the extension, thus, the length of at least part of the second openings 1012 along the second direction Y in the embodiment is greater than the length of the first openings 1011 along the second direction Y.

[0113] In some embodiments, at the corner 16, the size of at least part of the second openings 1012 near the center of the corner 16 is greater than the size of the second openings 1012 near the side edge 15.

[0114] In some embodiments, when the second opening 1012 overlaps the boundary of the display area AA, the second opening 1012 can also be regarded as a fourth opening 1014, at this time, the second opening 1012 is partially located in the non-display area NA and partially located in the display area AA.

[0115] In the embodiment, at the side edge 15 of the display panel, the second barrier wall 12 is extended to the non-display area AA and connected to the first barrier wall 11, and the third barrier wall 13 is also extended to the non-display area NA and connected to the first barrier wall 11; therefore, a fifth opening 1015 can be formed in the pixel definition layer 10, and the fifth opening 1015 is formed in the non-display area NA at the side edge 15 and is located between the display area AA and the second opening 1012.

[0116] In addition, the pixel definition layer 10 also includes a first ink storage groove 102 formed in the non-display area NA, and the first ink storage groove 102 can be arranged around the plurality of openings 101, and the first ink storage groove 102 can be used to accommodate the printing ink of the light-emitting functional layer 20 in the process of the display panel.

[0117] It should be noted that the display panel provided in the embodiments of the present application needs to use an inkjet printing process to form the light-emitting functional layer 20, and the light-emitting functional layer 20 is formed in the opening 101 and can be prepared by using the inkjet printing process. After the ink of the light-emitting functional layer 20 is formed in the inkjet printing process, solidification and film formation need to be performed to volatilize the solvent of the ink. However, the solvent volatilization speed of the edge of the display panel is faster, which can easily cause the film formation thickness of the light-emitting functional layer 20 to be non-uniform, especially at the corner 16 of the display panel. In order to make the solvent atmosphere above the display panel uniform to ensure the thickness uniformity of the light-emitting functional layer 20, the first ink storage groove 102 is arranged in the non-display area NA to accommodate the ink in the process, so as to increase the solvent atmosphere of the edge of the display panel, balance the solvent volatilization speed of different areas of the display panel, and then effectively improve the film formation uniformity of the light-emitting functional layer 20 in the display panel and improve the light-emitting efficiency and yield of the display panel.

[0118] In the embodiments of the present application, the boundary of the display area AA is arc-shaped at the corner 16 of the display panel and has a first curvature radius, and the first ink storage groove 102 is arc-shaped at the corner 16 of the display panel and has a second curvature radius, and the first curvature radius is equal to the second curvature radius. Therefore, in the embodiments of the present application, the first ink storage groove 102 is arranged to be arc-shaped at the corner 16, and the boundary of the display area AA is also arranged to be arc-shaped at the corner 16, and the curvature radii of the two are equal, so that the distance between the first ink storage groove 102 and the display area AA at any position of the corner 16 is the same, the volatilization atmosphere of the solvent in the inkjet printing process is improved, the uniformity of the solvent volatilization is improved, the film formation uniformity of the light-emitting functional layer 20 is improved, and the display uniformity of the display panel is improved. In addition, the display area AA and the first ink storage groove 102 are both arc-shaped at the corner 16, which is suitable for the round-corner display panel, saves the space at the corner of the round-corner display panel, and is conducive to realizing the round-corner narrow-frame display panel, and is more suitable for display panels with any round corner.

[0119] In some embodiments, the light-emitting functional layer 20 further includes a virtual part 22 arranged in the first ink storage groove 102.

[0120] Further, the first barrier wall 11 can also be arc-shaped at the corner 16, and the first barrier wall 11 has a second curvature radius at the corner 16. For the second opening 1012 adjacent to the first barrier wall 11 in the second direction Y, the inner wall of the side of the second opening 1012 close to the first ink storage groove 102 is the side wall of the first barrier wall 11 close to the display area AA, so that the plurality of openings 101 in the outermost circle are arranged in abutment with the first barrier wall 11, that is, the plurality of second openings 1012 in the outermost circle are arranged in abutment with the first barrier wall 11.

[0121] It can be understood that, since the radius of curvature of the first barrier wall 11 at the corner 16 is equal to the radius of curvature of the boundary of the display area AA at the corner 16, and the plurality of second openings 1012 located at the outermost circle are arranged in abutment with the first barrier wall 11, the plurality of second openings 1012 located at the outermost circle are arranged in abutment with the first barrier wall 11 at the corner to form an arc with the same radius of curvature as the boundary of the display area AA, so that the ink storage space with the same distance between the boundary of the display area AA and the first barrier wall 11 can be formed, the solvent atmosphere tends to be consistent at any position of the corner 16, and the film forming uniformity of the display panel at the corner 16 is further improved, and the display uniformity of the display panel is improved.

[0122] Further, in some embodiments, the boundary of the display area AA and the first barrier wall 11 have a first distance L1 at the corner 16, and the boundary of the display area AA and the first barrier wall 11 have a second distance L2 at the side edge 15, the first distance L1 is equal to the second distance L2; in addition, the distance between the boundary of the display area AA and the first barrier wall 11 along the second direction Y is the same at the corner 16. It can be understood that, in the embodiments of the present application, the distance between the first barrier wall 11 and the boundary of the display area AA is equal at each position of the display panel, and since the plurality of openings 101 located at the outermost circle are arranged in abutment with the first barrier wall 11, the ink storage space with the same distance between the boundary of the display area AA and the first barrier wall 11 can be formed, the solvent atmosphere tends to be consistent at any position of the edge of the display panel, and the film forming uniformity of the display panel at the edge is further improved, and the display uniformity of the display panel is improved.

[0123] In some embodiments, at least at the corner 16, the minimum distance between the second opening 1012 and the first ink storage groove 102 is less than or equal to the width of the second barrier wall 12, or the minimum distance between the second opening 1012 and the first ink storage groove 102 is less than or equal to the width of the third barrier wall 13.

[0124] Further, the height of the second barrier wall 12 is greater than the height of the third barrier wall 13, so that the second barrier wall 12 is used to block the ink, and in the embodiments of the present application, the minimum distance between the second opening 1012 and the first ink storage groove 102 at least at the corner 16 can be less than or equal to the width of the second barrier wall 12; that is, the width of the first barrier wall 11 at least at the corner 16 is less than or equal to the width of the second barrier wall 12; and the total area of the second opening 1012 at the corner 16 can be increased, the ink storage amount of the corner 16 is increased, and the film forming uniformity at the corner 16 is further improved.

[0125] Correspondingly, the pixel definition layer 10 further comprises at least one fourth barrier wall 14 located on the side of the first barrier wall 11 away from the display area AA, and the first ink storage groove 102 can be located between the first barrier wall 11 and the fourth barrier wall 14, and the fourth barrier wall 14 is arc-shaped at the corner 16 and has a second radius of curvature.

[0126] In some embodiments, at least one second ink storage groove 103 located on the side of the first ink storage groove 102 away from the display area AA is further formed in the pixel definition layer 10, and the second ink storage groove 103 is arranged around the plurality of openings 101; and the second ink storage groove 103 is arc-shaped at the corner 16 and has a second radius of curvature.

[0127] Correspondingly, the pixel definition layer 10 further comprises at least two fourth barrier walls 14 located on the side of the first barrier wall 11 away from the display area AA; and the first ink storage groove 102 can be located between the first barrier wall 11 and the fourth barrier wall 14, and the second ink storage groove 103 can be located between two adjacent fourth barrier walls 14; specifically, when the number of the second ink storage groove 103 is one, the number of the fourth barrier wall 14 is two, and the second ink storage groove 103 is located between the two fourth barrier walls 14; when the number of the second ink storage groove 103 is more than two, the number of the fourth barrier wall 14 is more than two, and each second ink storage groove 103 is located between two adjacent fourth barrier walls 14; wherein the fourth barrier wall 14 is arc-shaped at the corner 16 and has a second radius of curvature.

[0128] In some embodiments, the light-emitting functional layer 20 can further comprise a virtual part 22 arranged in the second ink storage groove 103.

[0129] It should be noted that the display panel can have a plurality of corners 16, and at least one corner 16 of the display panel provided in the embodiments of the present application can be arranged as the structure shown in Figure 1 , or all corners 16 can be arranged as the structure shown in Figure 1 .

[0130] In summary, the embodiments of the present application arrange the second opening 1012 in the corner 16 of the display panel in the non-display area NA, and then the virtual part 22 can be arranged in the second opening 1012, and then the second opening 1012 can be used to accommodate ink during the formation of the light-emitting functional layer 20, so as to improve the ink capacity at the corner 16, improve the uniformity of ink solvent evaporation at the corner 16, and facilitate the improvement of the film formation uniformity of the light-emitting part 21; and the size of the second opening 1012 is different from the size of the first opening 1011 in the display area NA, that is, the size of the second opening 1012 can be adjusted according to the shape of the corner 16 to be arranged in accordance with the topography of the corner 16, which is conducive to improving the uniformity of accommodating ink at the corner 16, further improving the uniformity of ink solvent evaporation at the corner 16 and the film formation uniformity of the light-emitting part 21.

[0131] In addition, refer to Figure 6 The display device 50 comprises the display panel 51, and the display panel 51 can be the display panel described in the above embodiments.

[0132] It can be understood that the display device 50 has the same display panel 51 as the above embodiments, and the display device 50 has the same beneficial effects as the display panel 51, which will not be described here.

[0133] In the description of the present application, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0134] In the above embodiments, the description of each embodiment has its own emphasis, and the parts not described in detail in a certain embodiment can refer to the related description of other embodiments.

[0135] The embodiments, implementation manners and related technical features of the present application can be combined or replaced with each other without conflict.

[0136] The above is only the preferred embodiment of the present application, and does not limit the present application in any form. Any simple modification, equivalent change and modification made to the above embodiment according to the technical essence of the present application without departing from the technical solution content of the present application, still belongs to the scope of the technical solution of the present application.

Claims

1. A display panel, characterized by, The display panel comprises a plurality of side edges and corners connected between adjacent side edges, and the display panel comprises a display area and a non-display area adjacent to the display area; The display panel further comprises: a pixel definition layer, a plurality of openings in the display area and the non-display area and a first barrier wall in the non-display area are formed in the pixel definition layer, and the first barrier wall is arranged around the display area and the plurality of openings, the plurality of openings comprise a plurality of first openings and a plurality of second openings, the first openings are located in the display area, and the second openings are located at least in the non-display area and adjacent to the first barrier wall; a light-emitting functional layer arranged at least in the first openings and the second openings; At least at the corners, the size of at least part of the second openings is smaller than the size of the first openings, or the size of at least part of the second openings is greater than the size of the first openings.

2. The display panel of claim 1, wherein, At the corners, the size of at least part of the second openings near the center of the corners is greater than the size of the second openings near the side edges.

3. The display panel of claim 1, wherein, The pixel definition layer further comprises a plurality of second barrier walls and a plurality of third barrier walls in the enclosed area of the first barrier wall, the plurality of second barrier walls are arranged along a first direction, the second barrier walls extend along a second direction, the first direction intersects the second direction, the plurality of third barrier walls are arranged along the second direction, and the third barrier walls extend along the first direction; The pixel definition layer further comprises a first ink storage groove on the side of the first barrier wall away from the display area, and at least at the corners, the minimum distance between the second openings and the first ink storage groove is less than or equal to the width of the second barrier wall, or the minimum distance between the second openings and the first ink storage groove is less than or equal to the width of the third barrier wall.

4. The display panel of claim 3, wherein, When the size of at least part of the second openings is greater than the size of the first openings; At the corners, the second openings are located between the first barrier wall and the third barrier wall along the second direction, at least part of the third barrier wall extends from the display area to the non-display area, the part of the third barrier wall extending into the non-display area is adjacent to at least one second opening along the second direction, and the two ends of the third barrier wall along the first direction are spaced apart from the first barrier wall.

5. The display panel of claim 3, wherein, When the size of at least part of the second openings is smaller than the size of the first openings; At least at the corners, the opposite ends of the second barrier wall along the second direction are connected to the first barrier wall, and the opposite ends of the third barrier wall along the first direction are connected to the first barrier wall.

6. The display panel of claim 3, wherein, The height of the second barrier wall is greater than the height of the third barrier wall, the plurality of second barrier walls and the plurality of third barrier walls intersect, and together with the first barrier wall, the plurality of second barrier walls and the plurality of third barrier walls define a plurality of openings; The first openings are located between two adjacent third barrier walls along the second direction, and the first openings are located between two adjacent second barrier walls along the first direction. The second opening is located between the first barrier wall and the third barrier wall adjacent in the second direction, and is located between two second barrier walls adjacent in the first direction.

7. The display panel of claim 3, wherein, When the size of at least part of the second opening is smaller than the size of the first opening, at least at the corner, the length of the part of the second barrier wall adjacent to the second opening in the second direction is smaller than the length of the part of the second barrier wall adjacent to the first opening in the second direction. When the size of at least part of the second opening is larger than the size of the first opening, at least at the corner, the length of the part of the second barrier wall adjacent to the second opening in the second direction is larger than the length of the part of the second barrier wall adjacent to the first opening in the second direction.

8. The display panel of claim 3, wherein, The boundary of the display area is arc-shaped at the corner of the display panel and has a first radius of curvature, and the first ink storage groove is arc-shaped at the corner of the display panel and has a second radius of curvature, and the first radius of curvature is equal to the second radius of curvature.

9. The display panel of claim 8, wherein, At least one second ink storage groove is further formed in the pixel definition layer and located on the side of the first ink storage groove away from the display area, and the second ink storage groove is arranged around a plurality of the openings. The second ink storage groove is arc-shaped at the corner of the display panel and has the second radius of curvature.

10. The display panel of claim 9, wherein, The pixel definition layer further includes at least two fourth barrier walls located on the side of the first barrier wall away from the display area, the first ink storage groove is located between the first barrier wall and the fourth barrier wall, and the second ink storage groove is located between two adjacent fourth barrier walls. The fourth barrier wall is arc-shaped at the corner and has the second radius of curvature.

11. The display panel of claim 1, wherein, The plurality of openings are arranged in a first direction and a second direction, and the first direction intersects the second direction. At least at the corner, the length of at least part of the second opening in the second direction is smaller than the length of the first opening in the second direction.

12. The display panel of claim 1, wherein, The plurality of openings are arranged in a first direction and a second direction, and the first direction intersects the second direction. At least at the corner, the length of at least part of the second opening in the second direction is larger than the length of the first opening in the second direction.

13. The display panel of claim 11 or 12, wherein, For the second opening adjacent to the first barrier wall in the second direction, the side wall of the first barrier wall close to the side of the display area is multiplexed as the inner wall of the second opening away from the side of the display area.

14. The display panel of claim 11 or 12, wherein, The materials of the light-emitting functional layer in two openings adjacent in the first direction are different, and the materials of the light-emitting functional layer in a plurality of openings arranged in the second direction are the same, the light-emitting functional layer includes a light-emitting part arranged in the first opening and a virtual part arranged 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 of claim 14, wherein, The plurality of openings further include a plurality of third openings, the third openings overlap with the boundary of the display area, an area of the third openings located in the display area accounts for greater than or equal to 50% of a total area of the third openings, and the light emitting part is arranged in the third openings; And / or, the plurality of openings further include a plurality of fourth openings, the fourth openings overlap with the boundary of the display area, an area of the fourth openings located in the non-display area accounts for greater than 50% of a total area of the fourth openings, and the virtual part is arranged in the fourth openings.

16. The display panel of claim 15, wherein, At least at the corner of the display panel, the third openings are arranged between the first openings and the second openings arranged along the second direction; Or, at least at the corner, the fourth openings are arranged between the first openings and the second openings arranged along the second direction; Or, at least at the corner, the first openings and the second openings arranged along the second direction are arranged adjacently.

17. The display panel of claim 15, wherein, At least at the corner, when at least part of the second openings has a size smaller than that of the first openings, the plurality of openings further include fifth openings arranged in the non-display area, the fifth openings are located between the second openings and the boundary of the display area, and the light emitting functional layer further includes the virtual part arranged in the fifth openings; At least at the corner, the fifth openings are located between the first openings and the second openings arranged along the second direction; Or, at least at the corner, the fifth openings are located between the third openings and the second openings arranged along the second direction; Or, at least at the corner, the fifth openings are located between the fourth openings and the second openings arranged along the second direction.

18. The display panel of claim 17, wherein, A length of the fifth openings along the second direction is equal to a length of the first openings along the second direction.

19. The display panel of claim 1, wherein, At the corner, a first spacing between the boundary of the display area and the first barrier wall is equal to a second spacing between the boundary of the display area and the first barrier wall at the side.

20. A display device comprising: The display device includes the display panel as claimed in any one of claims 1 to 19.

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