Display boards and display devices

Abstract

A display substrate and a display device, the display substrate comprising a base substrate (10), a plurality of sub-pixels (100), a pixel defining layer (200) and a plurality of spacers (300), each of the sub-pixels (100) comprising a light-emitting region (101), the pixel defining layer (200) comprising a plurality of openings (210) for defining the light-emitting regions (101) of the plurality of sub-pixels (100), the spacers (300) being located on a side of the pixel defining layer (200) away from the base substrate (10) and distributed in the intervals between adjacent openings (210). The at least one opening (210) has a shape obtained by cutting at least one apex angle (401) of a polygon (400), the corner of the opening (210) includes a first corner (1011), the corner is a corner formed after the apex angle (401) formed by two sides of the polygon (400) is cut off, at least one spacer (300) is disposed at a space between the corner and an adjacent opening (210), and a line connecting the geometric center of the opening (210) where the corner is located and the geometric center of the adjacent opening (210) passes through the corner and the spacer (300). The embodiment of the present disclosure contributes to improving process yield or improving the supporting effect of the spacer by disposing the spacer at a space between the openings of the pixel definition layer corresponding to the corner.

Description

Technical Field

[0001] This application claims the priority of Chinese Patent Application No. 202110711261.4 filed on June 25, 2021, and the content disclosed in the above Chinese patent application is incorporated herein by reference in its entirety as part of this application.

[0002] At least one embodiment of the present disclosure relates to a display substrate and a display device.

Background Art

[0003] An organic light-emitting display device (Organic Light-Emitting Display, OLED) is a self-emitting device having a series of advantages such as high brightness, full viewing angle, high response speed, and flexible display. Organic light-emitting diode display devices can be classified into passive matrix OLED (Passive Matrix OLED) and active matrix OLED (Active Matrix OLED) according to the driving method. AMOLED display devices have high luminous efficiency and can be used as large high-resolution display devices.

Summary of the Invention

Means for Solving the Problems

[0004] [[ID=二十六]]At least one embodiment of the present disclosure provides a display substrate and a display device..

[0005] At least one embodiment of the present disclosure provides a display substrate comprising: a base substrate; a plurality of subpixels located on the base substrate and comprising a plurality of light-emitting regions; a pixel definition layer located on the base substrate and comprising a plurality of openings for defining the plurality of light-emitting regions; and a plurality of spacers located on the side of the pixel definition layer away from the base substrate and distributed in intervals between adjacent openings. The shape of at least one opening is a shape obtained by cutting off at least one vertex angle of a polygon, the corner of the opening comprises a first corner, the first corner is a corner formed after the vertex angle formed by two sides of the polygon is cut off, at least one spacer is installed in intervals between the first corner and an adjacent opening, and a line connecting the geometric center of the opening in which the first corner is located and the geometric center of the adjacent opening passes through the first corner and the spacer.

[0006] For example, in the embodiments of this disclosure, the ratio of the length of at least one of the two sides to the length of the side is 0.2 to 0.8.

[0007] For example, in the embodiments of the present disclosure, each spacer is installed in the space between the first corner and the opening adjacent to the first corner.

[0008] For example, in the embodiments of this disclosure, the number of openings having the first corner is equal to or greater than the number of the plurality of spacers.

[0009] For example, in embodiments of the present disclosure, the opening having the first corner is configured to define an emission region of at least one color subpixel.

[0010] For example, in embodiments of the present disclosure, the opening having the first corner includes an opening of the same type.

[0011] For example, in embodiments of the present disclosure, the opening having the first corner and configured to define a light-emitting region of the same color subpixel includes at least two types of openings, in which the vertices of the first corner are oriented in different directions toward the vertices of the opposite corners, and at least some of the plurality of spacers are distributed at the intervals corresponding to the same type of opening.

[0012] For example, in the embodiments of the present disclosure, the plurality of spacers include a plurality of first spacers, the plurality of first spacers are distributed at intervals corresponding to the first corners of the same type of opening, and the plurality of first spacers are uniformly distributed.

[0013] For example, in embodiments of the present disclosure, the at least two types of openings include a first type opening and a second type opening, the plurality of first spacers are distributed at intervals corresponding to the first corners of at least some of the first type openings, the plurality of spacers further include a plurality of second spacers, the plurality of second spacers are distributed at intervals corresponding to the first corners of at least some of the second type openings, and the plurality of second spacers are uniformly distributed.

[0014] For example, in embodiments of the present disclosure, the at least two types of openings further include a third type of opening and a fourth type of opening, wherein the vertices of the first corners of two of the first type of opening, the second type of opening, the third type of opening and the fourth type of opening are in opposite directions toward the vertices of the opposing corners, and the vertices of the first corners of two other types of openings are in opposite directions toward the vertices of the opposing corners.

[0015] For example, in embodiments of the present disclosure, at least some spacers are distributed in the space between the first corner of the opening and the opening adjacent to the first corner, which are configured to define different color subpixels.

[0016] For example, in embodiments of the present disclosure, at least two openings adjacent to at least one spacer each include the first corner, and the first corner of each of the at least two openings is the corner of the opening in which it is located that is closest to the spacer.

[0017] For example, in embodiments of the present disclosure, each subpixel includes a light-emitting element, the light-emitting element includes a stacked first electrode, a light-emitting layer, and a second electrode, the second electrode being located on the side of the light-emitting layer facing the base substrate, and the second electrode including a body electrode, the body electrode of the corresponding subpixel within the opening having at least a portion of the first corner having substantially the same shape as the opening.

[0018] For example, in embodiments of the present disclosure, the plurality of subpixels include a plurality of first color subpixels, a plurality of second color subpixels, and a plurality of third color subpixels, wherein the plurality of first color subpixels and the plurality of third color subpixels are arranged alternately along both the row and column directions to form a plurality of first pixel rows and a plurality of first pixel columns, wherein the plurality of second color subpixels are arranged in an array along both the row and column directions to form a plurality of second pixel rows and a plurality of second pixel columns, wherein the plurality of first pixel rows and the plurality of second pixel rows are arranged alternately along the column direction and offset from each other in the row direction, and the plurality The first row of pixels and the plurality of second rows of pixels are arranged alternately along the row direction and offset from each other in the column direction, and the plurality of openings include a plurality of first openings, a plurality of second openings and a plurality of third openings, the plurality of first openings configured to define the light-emitting regions of the plurality of first color subpixels, the plurality of second openings configured to define the light-emitting regions of the plurality of second color subpixels, and the plurality of third openings configured to define the light-emitting regions of the plurality of third color subpixels, and at least one of the first openings, the second openings and the third openings includes the first corner.

[0019] For example, in embodiments of the present disclosure, at least some of the plurality of spacers are distributed in the spacing between two adjacent openings arranged along at least one of the column direction and the row direction.

[0020] For example, in embodiments of the present disclosure, four second-color subpixels are installed between adjacent spacers along one of the row and column directions, and two first-color subpixels and two third-color subpixels are installed between adjacent spacers along the other of the row and column directions, or six second-color subpixels are installed between adjacent spacers along one of the row and column directions, and three first-color subpixels and three third-color subpixels are installed between adjacent spacers along the other of the row and column directions, or four second-color subpixels are installed between adjacent spacers along one of the row and column directions, and three first-color subpixels and three third-color subpixels are installed between adjacent spacers along the other of the row and column directions, or six second-color subpixels are installed between adjacent spacers along one of the row and column directions, and two first-color subpixels and two third-color subpixels are installed between adjacent spacers along the other of the row and column directions.

[0021] For example, in embodiments of the present disclosure, the opening having the first corner and configured to define a light-emitting region of the same color subpixel includes at least two types of openings, in which the vertices of the first corners are oriented in different directions toward the vertices of the opposite corners, and the plurality of spacers includes a plurality of first spacers and a plurality of second spacers, the first spacers and the second spacers are distributed at intervals corresponding to the first corners of the different types of openings.

[0022] For example, in an embodiment of the present disclosure, along one of the row direction and the column direction, four of the second color sub-pixels are disposed between adjacent first spacers, and along the other of the row direction and the column direction, two of the first color sub-pixels and two of the third color sub-pixels are disposed between adjacent first spacers. Along one of the row direction and the column direction, four of the second color sub-pixels are disposed between adjacent second spacers, and along the other of the row direction and the column direction, two of the first color sub-pixels and two of the third color sub-pixels are disposed between adjacent second spacers.

[0023] For example, in an embodiment of the present disclosure, at least a part of the third openings includes the first corner, and each spacer is disposed at an interval between the first corner of the third openings and the first opening adjacent thereto.

[0024] For example, in an embodiment of the present disclosure, the distance between the spacer and the first corner located on one side thereof is a first distance, the shortest distance between the spacer and the corner of the opening located on the other side thereof is a second distance, and the first distance is not less than the second distance.

[0025] For example, in an embodiment of the present disclosure, in at least one of the row direction and the column direction, a line connecting the opposing corners of two openings located on both sides of the spacer and adjacent to the spacer is located on a side away from the first corner of the geometric center of the spacer.

[0026] For example, in an embodiment of the present disclosure, two adjacent openings along at least one of the row direction and the column direction both include the first corner, and the first corners of the two openings are the two closest corners to each other.

[0027] For example, in an embodiment of the present disclosure, at least a part of the openings includes at least two first corners.

[0028] For example, in an embodiment of the present disclosure, for at least one spacer, the maximum dimension in the direction parallel to the line connecting the geometric center of the opening where the first corner is located and the geometric center of the adjacent opening is the first dimension, the maximum dimension in the direction perpendicular to the connecting line is the second dimension, and the first dimension is smaller than the second dimension.

[0029] For example, in an embodiment of the present disclosure, the display substrate includes a display area, at least a part of the plurality of spacers and the plurality of sub-pixels are located in the display area, and the ratio of the number of spacers located at the interval between the first corner and the opening adjacent to the first corner to the number of spacers located in the display area is 50% or more.

[0030] For example, in an embodiment of the present disclosure, the shapes and dimensions of the light-emitting layers of the sub-pixels of the same color are the same, and the distance between the boundary of the light-emitting layer in the pixel definition layer and the first corner corresponding to the light-emitting layer is different from the distance between the boundary of the light-emitting layer in the pixel definition layer and the other corner corresponding to the light-emitting layer.

[0031] For example, in an embodiment of the present disclosure, the corner of the opening further includes a second corner, and the distance between the intersection of two sides connecting both endpoints of the first corner or their extension lines and the geometric center of the opening is greater than the distance between the intersection of two sides forming the second corner or their extension lines and the geometric center of the opening.

[0032] At least one embodiment of the present disclosure provides a display device, including any of the above display substrates.

[0033] To more clearly explain the technical solutions of the embodiments of the present disclosure, the drawings of the embodiments will be briefly described below. Obviously, the drawings described below only relate to some embodiments of the present disclosure and do not limit the present disclosure.

Brief Description of the Drawings

[0034] [Figure 1] FIG. 1 is a partial plane structure schematic diagram of pixel arrangement according to an example of an embodiment of the present disclosure. [Figure 2] Figure 2 is a schematic diagram of the planar structure of a pixel definition layer and spacer according to an example of an embodiment of the present disclosure. [Figure 3] Figure 3 is a schematic diagram of a partial cross-sectional structure cut along the line AB shown in Figures 1 and 2. [Figure 4A] Figure 4A is a schematic diagram of the shape of the opening shown in Figure 2. [Figure 4B] Figure 4B is a schematic diagram of the shape of another light-emitting region. [Figure 5A] Figure 5A is a schematic diagram of the planar structure of the pixel definition layer and spacers. [Figure 5B] Figure 5B is a schematic diagram of a partial planar structure of an example of the pixel definition layer and spacer shown in Figure 2. [Figure 5C] Figure 5C is a schematic diagram of a partial planar structure of another example of the pixel definition layer and spacer shown in Figure 2. [Figure 6] Figure 6 is a schematic diagram of the planar structure of a pixel definition layer and spacer according to another embodiment of the present disclosure. [Figure 7] Figure 7 is an enlarged view of the opening shown in Figure 2. [Figure 8A] Figure 8A is a schematic diagram of the planar structure of a pixel definition layer and spacer according to another embodiment of the present disclosure. [Figure 8B] Figure 8B is a schematic diagram of the planar structure of a pixel definition layer and spacer according to another embodiment of the present disclosure. [Figure 8C] Figure 8C is a schematic plan view of the display board. [Figure 9] Figure 9 is a schematic diagram of the planar structure of a pixel definition layer and spacer according to another embodiment of the present disclosure. [Figure 10A] Figure 10A is a schematic diagram of the planar structure of a pixel definition layer and spacer according to another embodiment of the present disclosure. [Figure 10B] Figure 10B is a schematic diagram of the planar structure of a pixel definition layer and spacer according to another embodiment of the present disclosure. [Figure 10C] Figure 10C is a schematic diagram of the planar structure of a pixel definition layer and spacer according to another example of the embodiments of this disclosure. [Figure 11A]Figure 11A is a schematic diagram of the planar structure of a pixel definition layer and spacer according to another embodiment of the present disclosure. [Figure 11B] Figure 11B is a schematic diagram showing the correspondence between the light-emitting layer of some subpixels and their corresponding apertures. [Figure 12] Figure 12 is an equivalent diagram of the pixel circuit. [Figure 13] Figure 13 is a schematic diagram of a partial planar structure of the active semiconductor layer. [Figure 14] Figure 14 is a schematic diagram of the partial planar structure of the first conductive layer. [Figure 15] Figure 15 is a schematic diagram of the partial planar structure of the second conductive layer. [Figure 16] Figure 16 is a schematic diagram of a partial planar structure of the source-drain metal layer. [Figure 17] Figure 17 is a schematic diagram of the planar structure of the second electrode of some subpixels. [Figure 18] Figure 18 shows a stacked view of the light-emitting region of some subpixels, the active semiconductor layer, the first conductive layer, the second conductive layer, and the source-drain metal. [Modes for carrying out the invention]

[0035] To further clarify the purpose, technical solutions, and advantages of the embodiments of this disclosure, the technical solutions of the embodiments of this disclosure will be described clearly and completely below with reference to the drawings of the embodiments of this disclosure. Clearly, the embodiments described are a part of the embodiments of this disclosure, but not all of them. All other embodiments obtained by a person skilled in the art without requiring any creative work based on the embodiments of this disclosure described are all within the scope of this disclosure.

[0036] Unless otherwise defined, technical or scientific terms used in this disclosure have the general meanings that are understandable to those skilled in the art. The terms “First,” “Second,” and similar terms used in this disclosure do not indicate any order, number, or importance, but are merely used to distinguish different components. Similar terms such as “Includes” or “Incorporates” are intended to include, but not exclude, other elements or components, the element or component listed before the term and its equivalents listed after the term.

[0037] Embodiments of the present disclosure provide a display substrate and a display device. The display substrate includes a base substrate, a plurality of subpixels located on the base substrate, a pixel definition layer, and a plurality of spacers. The plurality of subpixels include a plurality of light-emitting regions, the pixel definition layer includes a plurality of openings for defining the plurality of light-emitting regions, and the plurality of spacers are located on the side of the pixel definition layer away from the base substrate and distributed in the spacing between adjacent openings. The shape of at least one opening is a shape obtained by cutting off at least one vertex angle of a polygon, the corner of the opening includes a first corner, the first corner is a corner formed after the vertex angle formed by two sides of the polygon is cut off, and at least one spacer is installed in the spacing between the first corner and an adjacent opening, and the line connecting the geometric center of the opening where the first corner is located and the geometric center of the adjacent opening passes through the first corner and the spacer. Embodiments of the present disclosure contribute to improving process yield or improving the support function of spacers by installing spacers at the spacing positions of the openings in the pixel definition layer corresponding to the first corner.

[0038] A schematic diagram of the display board according to the embodiment of this disclosure will be described below with reference to the drawings.

[0039] Figure 1 is a schematic diagram of a partial planar structure of pixel arrangement according to an example embodiment of the present disclosure, Figure 2 is a schematic diagram of the planar structure of a pixel definition layer and spacers according to an example embodiment of the present disclosure, and Figure 3 is a schematic diagram of a partial cross-sectional structure cut along the A-B line shown in Figures 1 and 2. As shown in Figures 1 to 3, the display substrate includes a base substrate 10, a plurality of subpixels 100 located on the base substrate 10, a pixel definition layer 200, and a plurality of spacers (Photo Spacers, PS) 300 located on the side of the pixel definition layer 200 away from the base substrate 10. The plurality of subpixels 100 include a plurality of light-emitting regions 101, for example each subpixel 100 includes a light-emitting region 101, and the pixel definition layer 200 includes a plurality of openings 210 for defining the light-emitting regions 101 of the plurality of subpixels 100.

[0040] For example, as shown in Figures 1 to 3, the shape of the light-emitting region 101 of each subpixel 100 is substantially the same as the shape of the opening of the pixel definition layer 200. For example, each subpixel 100 includes a light-emitting element 1000, which includes a stacked first electrode 1100, a light-emitting layer 1300, and a second electrode 1200, with the second electrode 1200 located on the side of the light-emitting layer 1300 facing the base substrate 10. For example, at least a portion of the second electrode 1200 is located on the side of the pixel definition layer 200 facing the base substrate 10. When the light-emitting layer 1300 is formed in the opening 210 of the pixel definition layer 200, the first electrode 1100 and the second electrode 1200 located on both sides of the light-emitting layer 1300 can drive the light-emitting layer 1300 in the opening 210 of the pixel definition layer 200 to emit light. For example, a functional layer is further provided between the light-emitting layer 1300 and the first electrode 1100, and between the light-emitting layer 1300 and the second electrode 1200. For example, the functional layer includes any one or multiple layers from among hole injection layers, hole transport layers, electron transport layers, hole barrier layers, electron barrier layers, electron injection layers, auxiliary light-emitting layers, interface improvement layers, anti-reflective layers, etc.

[0041] For example, as shown in Figures 1 to 3, the orthographic projection of the aperture 210 of the pixel definition layer 200 on the base substrate 10 lies within the orthographic projection of the corresponding light-emitting layer 1300 on the base substrate 10, that is, the light-emitting layer 1300 covers the aperture 210 of the pixel definition layer 200. For example, the area of ​​the light-emitting layer 1300 is larger than the area of ​​the corresponding aperture 210 of the pixel definition layer 200, that is, the light-emitting layer 1300 further includes a portion that covers at least the physical structure of the pixel definition layer 200, excluding the portion located inside the aperture 210 of the pixel definition layer 200. Typically, the light-emitting layer 1300 covers the physical structure of the pixel definition layer 200 at each boundary of the aperture 210 of the pixel definition layer 200.

[0042] As shown in Figures 1 to 3, the multiple spacers 300 are distributed in the spacing between adjacent apertures 210 of the pixel definition layer 200. For example, the spacing refers to the physical structure of the pixel definition layer 200 between adjacent apertures 210, and the spacers 300 are located within the physical structure of the pixel definition layer 200.

[0043] For example, as shown in Figures 1 to 3, the embodiments of this disclosure have two independent structures for the pixel definition layer 200 and the spacer 300, but are not limited to this. The spacer and the pixel definition layer may be an integrated structure, for example, formed integrally in the same patterning process without a clear boundary. For example, the boundary between the spacer and the pixel definition layer may be the position where an inflection point occurs in the gradient angle curve. For example, in the case of the pixel definition layer itself, the gradient angle may tend to be large to small from the edges of the openings located on both sides of its centerline in the extension direction towards the centerline in the extension direction of the pixel definition layer, and the gradient angle may be approximately 0° to 5° up to the nearly flat surface of the pixel definition layer, and the gradient angle tends to increase up to the boundary of the spacer on the nearly flat surface of the pixel definition layer, for example, at the boundary of the spacer, the gradient angle may increase from approximately 0° to about 10° (e.g., 5° to 10°), or become 10° or more. The above gradient angle may also be the angle between the outer tangent line drawn at the measurement point and the plane on which the surface of the nearest second electrode (e.g., anode) away from the base substrate is located. For example, the thickness of the pixel definition layer portion without a spacer is the first thickness (e.g., the average thickness of the nearly flat portion), and the maximum thickness of the pixel definition layer portion with a spacer is the second thickness. Regarding the boundary between the spacer and the pixel definition layer, the portion from the surface of the pixel definition layer closer to the base substrate to the first thickness is the pixel definition layer itself, and the portion beyond the first thickness to the second thickness is the spacer portion. For example, the first thickness (e.g., the average thickness of the nearly flat portion) may be 0.8 to 1.8 μm. For example, the first thickness may be 1.1 μm or more. For example, the first thickness may be less than 3 μm. The pixel definition layer functions as part of the package organic layer barrier dam, and if the thickness is too small, organic layer overflow can easily occur, potentially affecting the package effect. If the first thickness of the pixel definition layer is too thick, it is easy to greatly restrict the light emission angle, affecting the luminescence efficiency.

[0044] For example, the gradient angle of the part of the pixel definition layer 200 closest to the aperture 210 may be 15° to 25°. For example, the gradient angle of the part of the pixel definition layer 200 closest to the aperture 210 may be 17° to 21°. For example, the gradient angle of the part of the pixel definition layer 200 closest to the aperture 210 may be 18° to 20°.

[0045] For example, Figure 3 schematically shows that a spacer is placed in the pixel definition layer, but it is not limited to this, and the spacer may be placed in other film layers, for example, the spacer may be placed on the opposing substrate.

[0046] Figure 4A is a schematic diagram of the shape of the opening shown in Figure 2. As shown in Figures 1 to 4A, the shape of at least one opening 210 is the shape obtained by cutting off at least one vertex angle 401 of the polygon 400, and the corner of the opening 210 includes a first corner 1011, which is the first corner 1011 formed after the vertex angle 401 made by two sides 410 of the polygon 400 has been cut off. For example, the cutting line 402 for cutting off the vertex angle 401 of the polygon 400 may include a line segment having a regular shape such as a curve or a straight line, or it may be a line segment with an irregular shape.

[0047] For example, each side or extension of each opening 210 is sequentially connected to form a polygon 400, and at least some of the vertices of the polygon 400 have regions that do not overlap with the corresponding corners of the opening, and at least one of the corners of the opening 210 includes at least a first corner 1011, and the area of ​​the first corner 1011 and the region that does not overlap with the corresponding vertices of the polygon 400 is larger than the area of ​​each corner in at least some of the other corners and the region that does not overlap with the corresponding vertices of the polygon 400.

[0048] For example, the embodiments of this disclosure schematically show that the polygon 400 is a quadrilateral, and the shape of the polygon 400 corresponding to at least one opening 210 may be a rhombus, rectangle, or square, but is not limited thereto. The polygon 400 may also be a triangle, pentagon, or hexagon, and the embodiments of this disclosure are not limited thereto. For example, the angles of each corner of the polygon may or may not be equal.

[0049] For example, as shown in Figure 4A, the first corner 1011 includes a vertex P, which may lie on the connecting line 403, and the first corner 1011 has a rounded chamfer formed by the curve (i.e., the outer edge of the corner) formed by the portions of the two sides connected to both ends of the first corner 1011 that extend to and intersect with vertex P, in which case the first corner 1011 may be a range along a contour x microns centered on vertex P, where the value of x microns may be 2 to 7 microns. For example, the corner of the opening 210 further includes a second corner 1012, and the distance between the intersection of the two sides or extensions connecting both ends of the first corner 1011 and the geometric center of the opening 210 is greater than the distance between the intersection of the two sides or extensions forming the second corner 1012 and the geometric center of the opening 210. For example, when the first corner is a rounded chamfer, and the corner opposite the first corner in the shape of the opening (for example, the second corner) is a right angle or an acute angle, the distance between the intersection of the extensions of the two right sides connected to both ends of the first corner and the geometric center O of the opening 210 is greater than the distance between the intersection of the extensions of the two right sides forming the corner opposite the first corner and the geometric center O.

[0050] The "rounded chamfer" described above is a corner formed by a curve, and this curve may be a circular arc, an irregular curve, such as a curve cut from an ellipse, or a wavy line. The embodiments of this disclosure schematically show that the curve has a shape that is convex outward with respect to the geometric center O of the opening 210, but are not limited thereto, and the curve may have a shape that is concave inward with respect to the geometric center O of the opening 210. For example, when the curve is a circular arc that is convex outward, the centroid angle of the arc may be in the range of 10° to 150°. For example, the centroid angle of the arc may be in the range of 60° to 120°. For example, the centroid angle of the arc may be in the range of 90°. For example, the curve length of the rounded chamfer included in the first corner 1011 may be 10 to 60 microns.

[0051] For example, when the first corner 1011 has a rounded chamfer, its radius of curvature may be 5 to 20 microns.

[0052] For example, Figure 4B is a schematic diagram of the shape of another light-emitting region. As shown in Figure 4B, the first corner portion may be a line segment (i.e., the outer edge of the corner portion) formed by extending and intersecting the vertices P of two sides that form a certain vertex angle, thereby making the first corner portion a planar cut. For example, the first corner portion 1011 includes a planar cut, and the vertex of the first corner portion may be on the connecting line 403, for example, at the intersection of the connecting line 403 and the planar cut.

[0053] As shown in Figures 1 to 4A, at least one spacer 300 is installed in the space between the first corner 1011 and the adjacent opening 210, and the first corner 1011 is located on the side of the geometric center of the opening 210 that is closer to the adjacent opening 210, such that the first corner 1011 faces the adjacent opening 210. When the outer edge of the first corner 1011 is a curve that is convex outward, the first corner 1011 facing the adjacent opening means that the outer edge of the first corner 1011 protrudes into the adjacent opening.

[0054] As shown in Figures 1 to 4A, the line C01 connecting the geometric center of the opening 201 where the first corner 1011 is located and the geometric center of the adjacent opening 210 passes through the first corner 1011 and the spacer 300.

[0055] The embodiments of this disclosure contribute to improving process yield or the support function of spacers by installing spacers at the spacing positions of the apertures in the pixel definition layer corresponding to the first corner. The "spacing positions of the apertures in the pixel definition layer corresponding to the first corner" refers to the spacing in contact with the outer edge of the corner.

[0056] Embodiments of this disclosure allow for the placement of spacers at intervals corresponding to the first corners, increasing the distance between the spacers and the openings, and / or increasing the dimensions of the spacers, thereby reducing the probability of spacer detachment and contributing to an improvement in the process yield of the product.

[0057] When depositing film layers such as the light-emitting layer of subpixels, the spacer can support the fine metal mask template (FMM) for depositing the light-emitting layer. The FMM has multiple through-holes, which may be formed by etching. The deposited material passes through the through-holes from bottom to top and is deposited on the pixel definition layer. Because the FMM is made of metal, it is prone to damaging the material deposited on the base substrate when it comes into contact with the base substrate. To prevent the FMM from damaging the film layers of the display substrate, a spacer is placed on the pixel definition layer to support the FMM during deposition and prevent the FMM from damaging the surface of film layers such as the pixel definition layer. During deposition, the spacer is in close contact with the FMM above where the base substrate is placed. Embodiments of this disclosure can be configured to place spacers at intervals corresponding to the corners, increasing the distance between the spacer and the opening, and / or increasing the dimensions of the spacer, which contributes to improving the support function of the spacer on the fine metal mask template.

[0058] For example, as shown in Figures 1 to 4A, if the first corner 1011 of the opening 210 is facing downward (opposite to the direction indicated by the Y-direction arrow shown in Figure 2), a spacer 300 is installed in the lower space of the opening 210. Embodiments of this disclosure are not limited thereto. If the first corner of the opening is facing upward (opposite to the direction indicated by the Y-direction arrow shown in Figure 2), a spacer is installed in the upper space of the opening. If the first corner of the opening is facing to the right (opposite to the direction indicated by the X-direction arrow shown in Figure 2), a spacer is installed in the right space of the opening. If the first corner of the opening is facing left (opposite to the direction indicated by the X-direction arrow shown in Figure 2), a spacer is installed in the left space of the opening. In the embodiments of this disclosure, the orientation of the first corner of the opening is not limited to the upward, downward, leftward, or rightward directions described above (all of these orientations are substantially parallel to the row and column directions), but may also be in the inclination direction, where the inclination direction intersects both the row and column directions. For example, the angle between the inclination direction and the row direction may be 20 to 80 degrees, 30 to 70 degrees, or 45 to 60 degrees. For example, the orientation of the first corner of the opening may be diagonally upward (e.g., diagonally upward to the left, or diagonally upward to the right), or diagonally downward (e.g., diagonally downward to the left, or diagonally downward to the right).

[0059] For example, as shown in Figures 1 to 4A, two adjacent openings 210 are provided on both sides of the spacer 300 in one direction, a first corner portion 1011 is provided in at least one of the openings 210, and the first corner portion 1011 is located between the spacer 300 and the geometric center of the at least one opening 210.

[0060] For example, as shown in Figures 1 to 4A, if the first corner portion 1011 is installed in at least one opening 210 adjacent to the spacer 300, the first corner portion 1011 is the corner of the opening 210 that is closest to the spacer 300.

[0061] For example, as shown in Figures 1 to 4A, the ratio of the length L1 of at least one cut-off portion of two sides of polygon 400 (e.g., the first side 410) to the length of the side 410 is 0.2 to 0.8. After the first line segment L1 of the first side 410 of polygon 400 is cut off, the remaining portion L2 forms a side that connects the opening 210 of the first corner 1011. For example, both ends of the first corner 1011 are connected to two right sides of the opening 210, and at least one of these two right sides is the straight side that remains after the first line segment L1 of the first side 410 of polygon 400 is cut off.

[0062] For example, at least one first vertex angle 401 can be cut off from a polygon 400 to form at least one first corner portion 1011. For example, the degrees of multiple first vertex angles 401 included in a single polygon 400 are equal, and the parameters such as the shape and dimensions of the multiple first corner portions 1011 formed after the multiple first vertex angles 401 have been cut off are all equal.

[0063] For example, as shown in Figures 1 and 4A, the ratio of the length of the first line segment L1 to the length of the first side 410 is 0.3 to 0.7. For example, the ratio of the length of the first line segment L1 to the length of the first side 410 is 0.4 to 0.6. For example, the ratio of the length of the first line segment L1 to the length of the first side 410 is 0.5.

[0064] For example, as shown in Figures 1 and 4A, the ratio of the length of the first line segment L1 to the length of the remaining part L2 is 0.25 to 4. For example, the ratio of the length of the first line segment L1 to the length of the remaining part L2 is 1 to 3. The ratio of the length of the first line segment L1 to the length of the remaining part L2 is 0.5 to 2.

[0065] For example, as shown in Figures 1 to 4A, each spacer 300 is installed in the space between the first corner 1011 and the opening 210 adjacent to the first corner 1011. For example, all spacers 300 are installed at a distance close to the first corner 1011, further improving process yield and the support function of the spacers.

[0066] For example, as shown in Figures 1 to 4A, the number of openings 210 having a first corner 1011 is greater than or equal to the number of spacers 300. For example, the number of openings 210 having a first corner 1011 is greater than the number of spacers 300, and spacers 300 are installed near some of the openings 210 having a first corner 1011, while spacers 300 are not installed near other openings 210. Of course, the embodiments of this disclosure are not limited thereto, and spacers may be installed at a high density. For example, the number of spacers may be approximately equal to the number of openings having a first corner, and spacers may be installed at intervals corresponding to the first corners of the openings where the first corners are installed.

[0067] For example, in the direction of the line connecting the centers of adjacent openings 210, the ratio of the dimension of the spacer 300 to the dimension of the distance between the openings 210 may be 0.8 to 1.2.

[0068] For example, the maximum dimension of at least one spacer 300 in the direction parallel to the line C0 connecting the geometric center of the opening 210 where the first corner portion 1011 is located and the geometric center of the adjacent opening 210 is a first dimension SZ1, the maximum dimension in the direction perpendicular to the line C0 is a second dimension SZ2, and the first dimension SZ1 is smaller than the second dimension SZ2.

[0069] For example, the orthographic projection shape of at least one spacer 300 on the base substrate 10 is elongated, and the minor axis of the elongated shape is substantially parallel to the line C0 connecting the geometric center of the opening where the first corner portion 1011 is located and the geometric center of the adjacent opening.

[0070] Figure 2 schematically shows that the orthographic projection shape of the spacer 300 on the base substrate 10 is rectangular, with the longer side of the rectangle being the side adjacent to the first corner 1011 of the opening 210.

[0071] The embodiments of this disclosure are not limited to the orthographic projection shape on the base substrate of the spacer being rectangular. For example, the orthographic projection shape on the base substrate of the spacer may be selected from at least one of a rounded rectangle, an ellipse, or a circle. For example, the orthographic projection on the base substrate of the spacer may be an axisymmetric figure. For example, the spacer is located at the intersection of portions of the pixel-defining layer in different stretching directions (e.g., the intersection covering portions of the pixel-defining layer in different stretching directions) and has two axes of symmetry, each of which is substantially parallel to the two stretching directions of the pixel-defining layer on which it is located. For example, the dimension in the long axis direction of the orthographic projection on the base substrate of the spacer may be in the range of 20 to 50 μm. For example, the dimension in the short axis direction of the orthographic projection on the base substrate of the spacer may be in the range of 12 to 30 μm. For example, the range of the orthographic projection on the base substrate of the spacer is smaller than 48 μm * 26 μm. For example, the range of the orthographic projection on the base substrate of the spacer is smaller than 41 μm * 25 μm. For example, the range of the orthographic projection on the base substrate of the spacer is smaller than 33 μm * 20 μm. For example, the orthographic projection area of ​​the spacer on the base substrate is smaller than 25 μm * 15 μm.

[0072] For example, as shown in Figures 1 to 4A, the opening 210 having a first corner 1011 is configured to define the light-emitting region 101 of at least one color subpixel 100. For example, the at least one color subpixel 100 includes at least one of a blue subpixel, a green subpixel, and a red subpixel. Figures 1 to 4A schematically show that an opening configured to define the light-emitting region of a color subpixel includes a first corner, but are not limited to this. Openings configured to define the light-emitting regions of other color subpixels may also include a first corner and can be installed as required by the actual product.

[0073] Figure 5A is a schematic diagram of the planar structure of the pixel definition layer and spacer. As shown in Figure 5A, the shape of each opening 021 included in the pixel definition layer 020 is polygonal, and the vertex angles of the polygon are not cut off. The spacer 030 is located in the space between the opposing vertex angles 0211 and 0212 of two adjacent openings 021, and these two vertex angles 0211 and 0212 are both non-rounded chamfers or non-planar chamfers, and may be acute angles or right angles, for example. As shown in Figure 5A, the two distances between the spacer 030 and the two vertex angles 0211 and 0212 may be equal, for example, both being S0. Figure 5A schematically shows that the distance between spacer 030 and vertex angle 0211 (or vertex angle 0212) is the distance S0 between the edge of spacer 030 near vertex angle 0211 (or vertex angle 0212) and vertex angle 0211 (or vertex angle 0212), but is not limited to this, and the distance between spacer and vertex angle may be the distance between the geometric center of spacer and vertex angle. As shown in Figure 5A, the dimension of spacer 030 located between the two vertex angles 0211 and 0212 in the Y direction (the direction of arrangement of the two openings including the two vertex angles 0211 and 0212), for example, the width, is W0.

[0074] Figure 5B is a schematic diagram of a partial planar structure of an example of the pixel definition layer and spacer shown in Figure 2. As shown in Figure 5B, the distance between the spacer 300 and the first corner 1011 located on one side is the first distance S1, the shortest distance between the spacer 300 and the corner 1013 of the opening 210 located on the other side is the second distance S2, and the first distance S1 is greater than or equal to the second distance S2. For example, the first distance S1 may be greater than the second distance S2. For example, the first distance S1 may be equal to the second distance S2.

[0075] For example, the shape of the opening 210 having a corner 1013 shown in Figure 5B and its positional relationship with the spacer 300 are the same as the shape of the opening 021 having a vertex angle 0212 shown in Figure 5A and its positional relationship with the spacer 030, and the second distance S2 may be equal to the distance S0. The dimension W1 in the direction of arrangement (Y direction) of the two openings 210 of the spacer 300 shown in Figure 5B may be approximately equal to the dimension W0 in the direction of arrangement (Y direction) of the two openings 021 of the spacer 030 shown in Figure 5A. The first corner portion 1011 adjacent to the spacer 300 shown in Figure 5B may be the first corner portion 1011 formed after the vertex angle 0211 adjacent to the spacer 030 shown in Figure 5A has been cut off (the opening 021 where the vertex angle 0211 is located may be a polygon forming the opening 210 where the first corner portion 1011 is located), and the first distance S1 between the first corner portion 1011 and the spacer 300 shown in Figure 5B may be greater than the distance S0 between the vertex angle 0211 and the spacer 030 shown in Figure 5A, and the first distance S1 is greater than the second distance S2, which increases the distance between the spacer and the opening and contributes to improving the process yield.

[0076] For example, the shape and relative position of the openings 212 located on both sides in the X direction of the spacer 300 shown in Figure 5B are the same as the shape and relative position of the openings located on both sides in the X direction of the spacer 030 shown in Figure 5A. For example, as shown in Figure 5B, when the openings 212 located on both sides in the X direction of the spacer 300 are distributed symmetrically with respect to the line C0 connecting them, the two distances between the spacer 300 and the two openings 212 located on both sides of it in the X direction are equal. For example, the openings 212 located on both sides in the X direction of the spacer 300 may or may not include a first corner, and the embodiments of this disclosure are not limited thereto.

[0077] For example, as shown in Figure 5B, the openings 210 surrounding the spacer 300 include two openings arranged in the row direction and two openings arranged in the column direction, and at least one of the four openings 210 includes a first corner 1011, for example, one of the four openings includes a first corner 1011 facing the spacer 300, the distance between the spacer 300 and the first corner 1011 is the first distance, the distance between the spacer 300 and another opening 210 arranged in the row or column direction with respect to the opening where the first corner 1011 is located is the second distance, and the distances between the spacer 300 and the remaining two openings 210 arranged in the column or row direction are the third distance and the fourth distance, respectively. For example, the distances between the spacer 300 and the openings 212 located on both sides of the spacer 300 in the X direction may be the third distance and the fourth distance, respectively, and the third distance and the fourth distance may or may not be equal. For example, the first distance may be greater than the third distance, and the second, third, and fourth distances may all be equal. For example, the first and second distances may be equal, the third and fourth distances may be equal, and the first distance may be greater than the third distance.

[0078] For example, when the dimension W0 of spacer 030 in Figure 5A is equal to the dimension W1 of spacer 300 in Figure 5B, by adjusting the distance between spacer 300 in Figure 5B and the two adjacent openings 210 located on either side of it in the Y direction, the first distance S1 and the second distance S2 become essentially equal, and both the first distance S1 and the second distance S2 are greater than the distance S0 shown in Figure 5A. Embodiments of this disclosure can increase the distance between a spacer and the two openings located on either side of it by adjusting the distance between the spacer and the openings, thereby reducing the probability of spacer detachment and contributing to improved process yield.

[0079] Figure 5C is a schematic partial planar structure of another example of the pixel definition layer and spacer shown in Figure 2. As shown in Figure 5A, the line L0 connecting the opposing corners 0213 and 0214 of the two openings 021 located on both sides of the spacer 030 in the X direction and adjacent to the spacer 030 passes through the geometric center 031 of the spacer 030. As shown in Figure 5C, the first distance S1 and the second distance S2 between the spacer 300 and the two openings 210 located on both sides of it in the X direction may both be equal to the distance S0 shown in Figure 5A, and the dimension W1 (e.g., width) of the spacer 300 in the Y direction shown in Figure 5C is greater than the dimension W0 of the spacer 030 in the Y direction shown in Figure 5A. Embodiments of this disclosure can improve the support function of the spacer while ensuring process yield by increasing the dimensions of the spacer without reducing the distance between the spacer and the openings.

[0080] In the example shown in Figure 5C, the opening 210 located on one side of the spacer 300 in the Y direction (or X direction) has a first corner portion 1011, the opening 210 on the other side of the spacer 300 in the Y direction (or X direction) does not have a first corner portion 1011, the openings 210 located on both sides of the spacer 300 in the X direction (or Y direction) are distributed symmetrically, and neither of them has a first corner portion 1011, nor does it have a first corner portion 1011, and the first corner portions 1011 of the two openings 210 are distributed symmetrically.

[0081] For example, as shown in Figure 5C, the line L01 connecting the opposing corners 1014 and 1015 of two openings 210 located on both sides of the spacer 300 and adjacent to the spacer 300 in at least one of the row and column directions is located on the side away from the first corner 1011 of the geometric center 301 of the spacer 300.

[0082] For example, the first distance, second distance, third distance, and fourth distance may all be equal.

[0083] Of course, the embodiments of this disclosure are not limited to the setting of the dimensions of the spacer and the distance between the spacer and the opening. For example, the dimension W1 of the spacer 300 shown in Figure 5B may be larger than the dimension W0 of the spacer 030 shown in Figure 5A, and the distance between the spacer 300 and at least one opening (at least one of the first distance and the second distance) may be larger than the distance S0 between the spacer 030 and the opening shown in Figure 5A. By simultaneously increasing the dimensions of the spacer and the distance between the spacer and the opening, it is possible to reduce the probability of spacer detachment and further improve the process yield of the product and the support function of the spacer.

[0084] Referring to Figures 5A to 5C, when a first corner is installed in at least one opening, the distance between the first corner and the adjacent corner located in an adjacent opening and facing the first corner increases. In this case, only the dimensions of the spacer may be increased, only the distance between the spacer and the opening may be increased, or both the dimensions of the spacer and the distance between the spacer and the opening may be increased. This reduces the probability of the spacer falling out and contributes to improving the process yield of the product and the support function of the spacer.

[0085] For example, Figure 6 is a schematic diagram of the planar structure of a pixel definition layer and spacers according to another example of an embodiment of the present disclosure. As shown in Figure 6, for example, the openings 210 having the first corner portion 1011 include openings of the same type, for example, each opening 210 having the first corner portion 1011 may include the first corner portion 1011, and the orientation of the first corner portion 1011 of each opening 210 is the same, for example, each first corner portion 1011 of each opening 210 is upward, or downward, or to the right, or to the left, or diagonally upward-left, or diagonally downward-left, or diagonally upward-right, or diagonally downward-right, and the multiple spacers 300 are distributed at intervals corresponding to the first corner portions 1011 with the same orientation. The above-mentioned "openings of the same type" refer to openings with the same orientation of corners, and such openings of the same type may include only openings configured to define the light-emitting regions of the same color subpixel, or they may include openings configured to define the light-emitting regions of different color subpixels. For example, openings of the same type may include only openings that define the light-emitting region of a blue subpixel, or openings that define the light-emitting region of a green subpixel, or openings that define the light-emitting region of a red subpixel, or openings that define the light-emitting region of a blue subpixel and an opening that defines the light-emitting region of a red subpixel, or openings that define the light-emitting region of a green subpixel and an opening that defines the light-emitting region of a red subpixel, or they may include openings that define the light-emitting region of a blue subpixel, an opening that defines the light-emitting region of a red subpixel, and an opening that defines the light-emitting region of a green subpixel.

[0086] Figure 6 schematically shows that an aperture configured to define the light-emitting region of a color subpixel includes the first corner, but is not limited to this. An aperture configured to define the light-emitting region of other color subpixels may also include the first corner and can be set according to the requirements of the actual product.

[0087] For example, as shown in Figures 1 to 4A, an aperture 210 having a first corner 1011 and configured to define a light-emitting region 101 of the same color subpixel 100 includes at least two types of apertures, where the direction in which the vertex of the first corner 1011 points toward the vertex of the opposite corner is different.

[0088] In embodiments of the present disclosure, different types of openings are openings in which the direction in which the vertex of one corner points toward the vertex of the opposite corner is different. For example, the opening may include four corners, in which case the opening may include one first corner, one of three other corners facing the first corner; the opening may further include two first corners and two other corners, each first corner facing one corresponding other corner, in which case the two corners are adjacent corners, and one of the corners is designated as a reference corner for determining different types of openings based on the relative positional relationship of the two corners, and the direction in which the reference corner points toward the opposite corner is designated as the reference direction; the opening may further include three corners and one other corner, and the corner facing the other corner is designated as the reference corner for determining different types of openings, and the direction in which the reference corner points toward the opposite corner is designated as the reference direction.

[0089] For example, Figure 7 is an enlarged view of the opening shown in Figure 2. As shown in Figures 2 and 7, in at least one opening 210, the line L connecting the vertices of the two corners other than the reference first corner 1011 and the corner opposite it divides the opening 210 into two parts: one part is where the first corner 1011 is located, and the other part is where the corner 1012 (for example, the second corner 1012) opposite the first corner 1011 is located. For example, the ratio of the area of ​​the part where the first corner 1011 is located to the area of ​​the part where the second corner 1012 is located may be 0.1 to 0.99. For example, the ratio of the area of ​​the part where the first corner 1011 is located to the area of ​​the part where the second corner 1012 is located may be 0.2 to 0.9. For example, the ratio of the area of ​​the part where the first corner 1011 is located to the area of ​​the part where the second corner 1012 is located may be 0.3 to 0.8. For example, the ratio of the area of ​​the part where the first corner 1011 is located to the area of ​​the part where the second corner 1012 is located may be 0.4 to 0.7.

[0090] For example, as shown in Figure 7, the distance d1 between the vertex of the first corner 1011 and the line L connecting them is smaller than the distance d2 between the vertex of the second corner 1012 and the line L connecting them. For example, the ratio d1 / d2 of the distance d1 between the vertex of the first corner 1011 and the line L connecting them to the vertex of the second corner 1012 and the line L connecting them to the vertex may be in the range of 0.1 to 0.9. For example, d1 / d2 may be in the range of 0.2 to 0.8. For example, d1 / d2 may be in the range of 0.4 to 0.6. For example, d1 / d2 may be in the range of 0.7 to 0.9.

[0091] For example, as shown in Figure 7, the length of the line connecting the vertex of the first corner 1011 and the vertex of the second corner 1012 may be a (i.e., the sum of the above-mentioned distances d1 and d2), the length of the connecting line L may be b, and the ratio of a to b may be in the range of 0.6 to 0.9. For example, the ratio of a to b may be in the range of 0.7 to 0.8.

[0092] For example, as shown in Figure 2, the orientation of the first corner 1011 may include upward, downward, leftward, rightward, diagonally upward-left, diagonally downward-left, diagonally upward-right, or diagonally downward-right, and the direction in which the vertex of the first corner 1011 points toward the vertex of the opposite corner may include multiple directions, for example, in at least two types of openings 210, the direction in which the vertex of the first corner 1011 points toward the vertex of the opposite corner may include at least two directions D1, D2, D3, and D4, and each direction is different. For example, the directions in which the vertex of the first corner 1011 points toward the vertex of the opposite corner in two types of openings 210 may be parallel and opposite, or intersect.

[0093] For example, as shown in Figures 1 to 4A, at least some of the multiple spacers 300 are distributed at intervals corresponding to the same type of opening. For example, spacers 300 distributed at intervals corresponding to the same type of opening are uniformly distributed, which contributes to reducing the difficulty of the spacer manufacturing process.

[0094] For example, as shown in Figure 2, at least two types of openings 210 include at least two of the first type opening 1001, the second type opening 1002, the third type opening 1003, and the fourth type opening 1004. For example, as shown in Figure 2, the direction in which the vertex of the first corner 1011 of the first type opening 1001 moves toward the vertex of the opposite corner may be direction D2, the direction in which the vertex of the first corner 1011 of the second type opening 1002 moves toward the vertex of the opposite corner may be direction D3, the direction in which the vertex of the first corner 1011 of the third type opening 1003 moves toward the vertex of the opposite corner may be direction D4, and the direction in which the vertex of the first corner 1011 of the fourth type opening 1004 moves toward the vertex of the opposite corner may be direction D1. For example, at least some of the multiple spacers 300 may be uniformly distributed at intervals corresponding to the first type of opening 1001, or at least some of the multiple spacers 300 may be uniformly distributed at intervals corresponding to the second type of opening 1002, or at least some of the multiple spacers 300 may be uniformly distributed at intervals corresponding to the third type of opening 1003, or at least some of the multiple spacers 300 may be uniformly distributed at intervals corresponding to the fourth type of opening 1004.

[0095] For example, as shown in Figure 2, the orientation of the first corner 1011 of two of the four types of openings—the first type opening 1001, the second type opening 1002, the third type opening 1003, and the fourth type opening 1004—is opposite, and the orientation of the first corner 1011 of two other types of openings is also opposite. For example, the direction D1 of the fourth type opening 1004 is opposite to the direction D4 of the third type opening 1003, and the orientation of the first corner 1011 of the fourth type opening 1004 is opposite to the orientation of the first corner 1011 of the third type opening 1003. For example, the direction D2 of the first type opening 1001 is opposite to the direction D3 of the second type opening 1002, and the orientation of the first corner 1011 of the first type opening 1001 is opposite to the orientation of the first corner 1011 of the second type opening 1002. The embodiments of this disclosure do not limit the names of the four types of openings described above, and the names "Type 1 opening," "Type 2 opening," "Type 3 opening," and "Type 4 opening" can be interchanged.

[0096] For example, Figure 8A is a schematic diagram of the planar structure of a pixel definition layer and spacers according to another embodiment of the present disclosure. As shown in Figure 8A, the plurality of spacers 300 include a plurality of first spacers 310, the plurality of first spacers 310 are distributed at intervals corresponding to the first corners 1011 of the same type of opening, and the plurality of first spacers 310 are uniformly distributed.

[0097] For example, Figure 8A schematically shows that a plurality of first spacers 310 are distributed at intervals corresponding to the first corners 1011 of at least some of the first type openings 1001, but is not limited to this, and may be distributed at intervals corresponding to the first corners 1011 of other types of openings (e.g., a second type opening 1002, a third type opening 1003, or a fourth type opening 1004). Of course, embodiments of this disclosure are not limited to the distribution of first spacers at intervals corresponding to the corners of the same type of opening, for example, some of the first spacers may be distributed at intervals corresponding to the corners of one type of opening, and other parts of the first spacers may be distributed at intervals corresponding to the corners of at least one of the other types of openings, and the first spacers just need to be installed regularly.

[0098] For example, as shown in Figure 8A, the plurality of spacers 300 further include a plurality of second spacers 320, the plurality of second spacers 320 distributed at intervals corresponding to the first corners 1011 of at least some of the second type openings 1002, and the plurality of second spacers 320 are uniformly distributed. While embodiments of the present disclosure schematically show that the second type opening 1002 is an opening in which the orientation of the first corner 1011 is leftward, the present disclosure does not limit the second type opening to any one type of opening in which the corner is upward, downward, or rightward.

[0099] For example, as shown in Figure 8A, both the first spacer 310 and the second spacer 320 may be elongated, and the long sides of both elongated forms may be parallel or intersecting, and the embodiments of this disclosure are not limited thereto.

[0100] For example, the number of first spacers 310 and second spacers 320 may be the same or different. For example, the ratio of the two numbers (which may be the ratio of the number of first spacers 310 to the number of second spacers 320, or the ratio of the number of second spacers 320 to the number of first spacers 310) may be 0.1 to 1, or 0.2 to 0.9, or 0.3 to 0.8, or 0.4 to 0.7, or 0.5 to 0.6.

[0101] For example, as shown in Figures 2 and 8A, the number of spacers 300 adjacent to one opening 210 may be one or two. For example, when there are two spacers 300 adjacent to one opening 210, these two spacers 300 may be positioned at intervals corresponding to two adjacent corners of the opening 210, or at intervals corresponding to two opposing corners of the opening 210, and the embodiments of this disclosure are not limited thereto.

[0102] The embodiments of this disclosure are not limited thereto, and for example, the number of spacers adjacent to one opening may be three or four, and can be set according to the needs of the actual product.

[0103] The embodiments of the present disclosure are not limited to the spacers comprising only a first spacer and a second spacer. For example, the spacers may further include a third spacer, which may be distributed at intervals corresponding to the first corner of a third type of opening or a fourth type of opening, for example, the third spacer may be uniformly distributed. For example, the spacers may further include a fourth spacer, which may be distributed at intervals corresponding to the first corner of the remaining one type of opening, for example, the fourth spacer may be uniformly distributed.

[0104] For example, the spacers may be distributed arbitrarily at intervals corresponding to the first corner, and may also be distributed regularly. Here, "regularly distributed" means that the spacers are distributed at basically equal intervals in the row direction, for example, with four openings (not limited to four openings, but could be two, six, etc.) between any two adjacent spacers, and the spacers are distributed at basically equal intervals in the column direction, for example, with four openings (not limited to four openings, but could be two, six, etc.) between any two adjacent spacers.

[0105] For example, the shape and size of the first spacer 310 and the second spacer 320 may be the same or different. Figure 8A schematically shows that the shape and size of the first spacer 310 and the second spacer 320 are the same, that is, all spacers 300 have the same shape and size. In the embodiments of this disclosure, the shape of the spacer may be the orthographic projection shape of the spacer on the base substrate, and the size of the spacer may be the orthographic projection area of ​​the spacer on the base substrate.

[0106] For example, Figure 8B is a schematic diagram of the planar structure of a pixel definition layer and spacers according to another example of an embodiment of the present disclosure. The difference between the example shown in Figure 8B and the example shown in Figure 8A is that at least some of the spacers are of different sizes. For example, the first spacer 310 and the second spacer 320 have different shapes and sizes. For example, the first spacer 310 and the second spacer 320 have the same shape but different sizes.

[0107] For example, the spacer 300 may include a maximum dimension along any direction, and the area of ​​the spacer will differ depending on the direction in which the maximum dimension extends. For example, the area of ​​the spacer 300 located at the interval corresponding to the first corner 1011 will be different from the area of ​​the spacer located at the interval not corresponding to the first corner.

[0108] The embodiments of this disclosure do not limit the shapes of the first and second spacers. For example, the shapes of the first and second spacers may be regular shapes such as circles, ellipses, rhombuses, or squares, or they may be irregular shapes, and can be set according to the requirements of the actual product.

[0109] Figure 8C is a schematic plan view of the display board. As shown in Figures 2, 8A to 8C, the display board includes a display area AA and a non-display area NA surrounding the display area AA. Figures 2 and 3 show a portion of the display area. For example, the plurality of subpixels 100 are located in the display area AA, and at least a portion of the plurality of spacers 300 are located in the display area AA. For example, the spacers 300 in the display area AA may include spacers located in the space between the first corner 1011 and the opening 210 adjacent to the first corner 1011, and spacers in other positions, and the ratio of the number of spacers 300 located in the space between the first corner 1011 and the opening 210 adjacent to the first corner 1011 to the number of spacers 300 located in the display area AA is 50% or more.

[0110] For example, the ratio of the number of spacers 300 located in the space between the first corner 1011 and the opening 210 adjacent to the first corner 1011 to the number of spacers 300 located in the display area AA is 60% or more. For example, the ratio of the number of spacers 300 located in the space between the first corner 1011 and the opening 210 adjacent to the first corner 1011 to the number of spacers 300 located in the display area AA is 70% or more. For example, the ratio of the number of spacers 300 located in the space between the first corner 1011 and the opening 210 adjacent to the first corner 1011 to the number of spacers 300 located in the display area AA is 80% or more. For example, the ratio of the number of spacers 300 located in the space between the first corner 1011 and the opening 210 adjacent to the first corner 1011 to the number of spacers 300 located in the display area AA is 90% or more.

[0111] For example, as shown in Figures 2 and 8A, the apertures 210 include apertures configured to define different color subpixels, such that, for example, in at least one direction such as row, column, or diagonal, two adjacent apertures 210 are configured to define the light-emitting regions of different color subpixels. For example, the apertures configured to define different color subpixels may include a first aperture 211, a second aperture 212, and a third aperture 213, where one of the first aperture 211, the second aperture 212, and the third aperture 213 is used to define the light-emitting region of a red subpixel, another is used to define the light-emitting region of a blue subpixel, and the remaining aperture is used to define the light-emitting region of a green subpixel.

[0112] For example, as shown in Figures 2 and 8A, at least some of the spacers 300 are distributed in the space between the first corner 1011 of an opening 210 configured to define different color subpixels and the opening 210 adjacent to the first corner 1011. For example, the spacers 300 may be distributed in the space between the first corner 1011 of a third opening 213 and the first opening 211.

[0113] For example, the spacer 300 may be distributed between two apertures 210 that define the same color subpixel, or, for example, the spacer 300 may be distributed between two second apertures 212, and the corner of the second aperture 212 toward the spacer 300 may be a first corner or not, and the embodiments of this disclosure are not limited thereto.

[0114] For example, Figure 9 is a schematic diagram of the planar structure of a pixel definition layer and spacer according to another embodiment of the present disclosure. As shown in Figure 9, at least two openings 210 adjacent to at least one spacer 300 each include a first corner 1011, and the first corners 1011 of at least two openings 210 each face the spacer 300.

[0115] For example, as shown in Figure 9, both the first opening 211 and the third opening 213 include a first corner 1011, and the first corners 1011 of both openings 210 face the spacer 300 located between the two openings 210. Furthermore, the distance between the opposing corners of the two openings located on either side of the spacer is increased, thereby increasing only the dimensions of the spacer, increasing only the distance between the spacer and the opening, or increasing both the dimensions of the spacer and the distance between the spacer and the opening. This reduces the probability of spacer detachment and contributes to improving the process yield of the product and the support function of the spacer.

[0116] Embodiments of the present disclosure are not limited to the case where at least two openings 210 adjacent to the spacer 300 (the first opening 211 and the third opening 213 shown in Figure 9) each include a first corner 1011 and the first corners 1011 of both openings 210 all face the spacer 300. For example, three openings adjacent to the spacer 300 include, for example, a first opening 211, a third opening 213, and one second opening 212, each including a first corner 1011, and the first corners 1011 of all three openings 210 all face the spacer 300. For example, three openings 210 adjacent to the spacer 300 include, for example, two second openings 212 and one first opening 211 or one third opening 213, each including a corner, and the first corners 1011 of all three openings 210 face the spacer 400. For example, the four openings adjacent to the spacer 300 include, for example, a first opening 211, a third opening 213, and two second openings 212, each including a first corner 1011, and the first corners 1011 of all four openings 210 face the spacer 300.

[0117] For example, as shown in Figures 1 to 9, the display board includes a plurality of subpixels 100. As shown in Figure 1, the plurality of subpixels 100 includes a plurality of first-color subpixels 110, a plurality of second-color subpixels 120, and a plurality of third-color subpixels 130. The plurality of first-color subpixels 110 and the plurality of third-color subpixels 130 are arranged alternately along the row direction (the X direction shown in Figure 1) to form a first pixel row 01, and the plurality of second-color subpixels 120 are arranged along the row direction to form a second pixel row 02. The first pixel row 01 and the second pixel row 02 are arranged alternately along the column direction (the Y direction shown in Figure 1) which intersects the row direction, and are offset from each other in the row direction. For example, adjacent first-color subpixels 110 and second-color subpixels 120 are arranged along the first direction, which intersects both the row direction and the column direction. As shown in Figure 1, multiple first-color subpixels 110 and multiple third-color subpixels 130 are arranged alternately along the column direction to form multiple first-pixel rows 03, and multiple second-color subpixels 120 are arranged in an array along both the row and column directions to form multiple second-pixel rows 02 and multiple second-pixel rows 04. The multiple first-pixel rows 03 and multiple second-pixel rows 04 are arranged alternately along the row direction and offset from each other in the column direction. That is, the second-pixel row 02 where one second-color subpixel 120 is located is located between two adjacent first-pixel rows 01, and the second-pixel row 04 where the second-color subpixel 120 is located is located between two adjacent first-pixel rows 03.

[0118] In embodiments of this disclosure, the row direction and column direction are both the arrangement directions of the first and third color subpixels, and these directions may or may not be parallel to the line connecting the geometric centers of the light-emitting regions of two adjacent subpixels. For example, the row direction intersects the column direction. For example, the angle between the row direction and the column direction may be 80 to 100 degrees. For example, the angle between the row direction and the column direction may be 85 to 95 degrees. For example, the row direction may or may not be perpendicular to the column direction. In embodiments of this disclosure, the row direction and the column direction can be interchanged.

[0119] In the embodiments of this disclosure, a subpixel is a light-emitting device structure, and the first color subpixel, second color subpixel, and third color subpixel are subpixels that emit light of different colors. The embodiments of this disclosure will be explained as an example in which the first color subpixel is a red subpixel, the second color subpixel is a green subpixel, and the third color subpixel is a blue subpixel. The fact that the first color subpixel is a red subpixel, the second color subpixel is a green subpixel, and the third color subpixel is a blue subpixel does not limit the scope of protection of the embodiments of this disclosure.

[0120] For example, the area of ​​the light-emitting region of at least one blue subpixel is larger than the area of ​​the light-emitting region of at least one red subpixel, and the area of ​​the light-emitting region of at least one red subpixel is larger than the area of ​​the light-emitting region of at least one green subpixel, thereby extending the lifespan of the display board. For example, the areas of the light-emitting regions of subpixels of the same color are essentially equal.

[0121] For example, as shown in Figures 1 to 9, the multiple apertures 210 of the pixel definition layer 200 include multiple first apertures 211, multiple second apertures 212, and multiple third apertures 213, where the multiple first apertures 211 are configured to define the light-emitting regions 101 of multiple first-color subpixels 110, the multiple second apertures 212 are configured to define the light-emitting regions 101 of multiple second-color subpixels 120, and the multiple third apertures 213 are configured to define the light-emitting regions 101 of multiple third-color subpixels 130.

[0122] For example, as shown in Figures 1 to 9, at least one of the openings 210 of the first opening 211, the second opening 212, and the third opening 213 includes a first corner 1011.

[0123] For example, Figure 2 schematically shows that only the third opening 213 includes the first corner 1011, and Figure 9 schematically shows that both the first opening 211 and the third opening 213 include the first corner 1011, and the embodiments of this disclosure are not limited to these. For example, the first opening, the second opening and the third opening all include the first corner, or the first opening and the second opening include the first corner, or the second opening and the third opening include the first corner, or only the first opening includes the first corner, or only the second opening includes the first corner.

[0124] For example, as shown in Figures 2, 6, and 8A, at least some of the multiple spacers 300 are distributed in the spacing between two adjacent openings 210 that are arranged along at least one of the column direction and row direction.

[0125] For example, the spacer 300 can be distributed between two second openings 212 arranged in the row direction, and between a first opening 211 and a third opening 213 arranged in the column direction. For example, the opening 210 surrounding the spacer 300 may include one first opening 211, one third opening 213, and two second openings 212, and the first opening 211 and the third opening 213 may be arranged along either the row direction or the column direction, and the two second openings 212 may be arranged along the other direction. Similarly, the subpixels 100 surrounding the spacer 300 may include one first-color subpixel 110, one third-color subpixel 130, and two second-color subpixels 120, where the first-color subpixel 110 and the third-color subpixel 130 may be arranged along either the row direction or the column direction, and the two second-color subpixels 120 may be arranged along the other of the row direction or the column direction.

[0126] For example, as shown in Figures 1 and 2, four second-color subpixels 120 are placed between adjacent spacers 300 along one of the row and column directions, and two first-color subpixels 110 and two third-color subpixels 130 are placed between adjacent spacers 300 along the other of the row and column directions. For example, four second-openings 212 are placed between adjacent spacers 300 along one of the row and column directions, and two first-openings 211 and two third-openings 213 are placed between adjacent spacers 300 along the other of the row and column directions.

[0127] For example, Figure 10A is a schematic diagram of the planar structure of a pixel definition layer and spacers according to another example of an embodiment of the present disclosure. As shown in Figures 1 and 10A, along one of the row and column directions, six second-color subpixels 120 are arranged between adjacent spacers 300, and along the other of the row and column directions, three first-color subpixels 110 and three third-color subpixels 130 are arranged between adjacent spacers 300. For example, along one of the row and column directions, six second-openings 212 are arranged between adjacent spacers 300, and along the other of the row and column directions, three first-openings 211 and three third-openings 213 are arranged between adjacent spacers 300. As schematically shown, some spacers 300 are located at intervals corresponding to the first corners 1011, and some spacers 300 are not located at intervals corresponding to the first corners 1011, and the embodiments of the present disclosure are not limited thereto. For example, by adjusting the orientation of the first corner of the opening, all spacers can be positioned at intervals corresponding to the first corner. For example, by adjusting the orientation of the first corner 1011 of all third openings 213 downwards, all spacers can be positioned at intervals corresponding to the first corner 1011. For example, by adjusting the orientation of the first corner 1011 of all first openings 211 upwards, all spacers can be positioned at intervals corresponding to the first corner 1011. For example, by installing a first corner 1011 facing right or left in the second opening 212, all spacers can be positioned at intervals corresponding to the first corner 1011.

[0128] For example, Figure 10B is a schematic diagram of the planar structure of a pixel definition layer and spacers according to another example of an embodiment of the present disclosure. As shown in Figures 1 and 10B, along one of the row and column directions, six second-color subpixels 120 are arranged between adjacent spacers 300, and along the other of the row and column directions, two first-color subpixels 110 and two third-color subpixels 130 are arranged between adjacent spacers 300. For example, along one of the row and column directions, six second openings 212 are arranged between adjacent spacers 300, and along the other of the row and column directions, two first openings 211 and two third openings 213 are arranged between adjacent spacers 300. As schematically shown, some spacers 300 are located at intervals corresponding to the first corners 1011, and some spacers 300 are not located at intervals corresponding to the first corners 1011, and embodiments of the present disclosure are not limited thereto. For example, by adjusting the orientation of the first corner of the opening, all spacers can be positioned at intervals corresponding to the first corner. For example, by adjusting the orientation of the first corner 1011 of all third openings 213 downwards, all spacers 300 can be positioned at intervals corresponding to the first corner 1011. For example, by adjusting the orientation of the first corner 1011 of all first openings 211 upwards, all spacers 300 can be positioned at intervals corresponding to the first corner 1011. For example, by installing a first corner 1011 facing right or left in the second opening 212, all spacers 300 can be positioned at intervals corresponding to the first corner 1011.

[0129] For example, Figure 10C is a schematic diagram of the planar structure of a pixel definition layer and spacers according to another example of an embodiment of the present disclosure. As shown in Figures 1 and 10C, along one of the row and column directions, four second-color subpixels 120 are arranged between adjacent spacers 300, and along the other of the row and column directions, three first-color subpixels 110 and three third-color subpixels 130 are arranged between adjacent spacers 300. For example, along one of the row and column directions, four second openings 212 are arranged between adjacent spacers 300, and along the other of the row and column directions, three first openings 211 and three third openings 213 are arranged between adjacent spacers 300. As schematically shown, some spacers 300 are located at intervals corresponding to the first corners 1011, and some spacers 300 are not located at intervals corresponding to the first corners 1011, and the embodiments of the present disclosure are not limited thereto. For example, by adjusting the orientation of the first corner of the opening, all spacers can be positioned at intervals corresponding to the first corner. For example, by adjusting the orientation of the first corner 1011 of all third openings 213 downwards, all spacers 300 can be positioned at intervals corresponding to the first corner 1011. For example, by adjusting the orientation of the first corner 1011 of all first openings 211 upwards, all spacers 300 can be positioned at intervals corresponding to the first corner 1011. For example, by installing a first corner 1011 facing right or left in the second opening 212, all spacers 300 can be positioned at intervals corresponding to the first corner 1011.

[0130] For example, as shown in Figures 1 and 8A, an aperture 210 having a first corner 1011 and configured to define a light-emitting region 101 of the same color subpixel 100 includes at least two types of apertures, in which different types of apertures the direction in which the vertex of the first corner 1011 points toward the vertex of the opposite corner is different, and the plurality of spacers 300 includes a plurality of first spacers 310 and a plurality of second spacers 320, the first spacers 310 and the second spacers 320 are distributed at intervals corresponding to the first corner 1011 of the different types of apertures.

[0131] For example, as shown in Figures 1 and 8A, along one of the row and column directions, four second-color subpixels 120 are placed between adjacent first spacers 310; along the other of the row and column directions, two first-color subpixels 110 and two third-color subpixels 130 are placed between adjacent first spacers 310; along one of the row and column directions, four second-color subpixels 120 are placed between adjacent second spacers 320; and along the other of the row and column directions, two first-color subpixels 110 and two third-color subpixels 130 are placed between adjacent second spacers 320. For example, along one of the row and column directions, four second openings 212 are provided between adjacent first spacers 310; along the other of the row and column directions, two first openings 211 and two third openings 213 are provided between adjacent first spacers 310; along one of the row and column directions, four second openings 212 are provided between adjacent second spacers 320; and along the other of the row and column directions, two first openings 211 and two third openings 213 are provided between adjacent second spacers 320.

[0132] For example, as shown in Figures 1 and 2, at least some of the third openings 213 include a first corner 1011, and each spacer 300 is installed in the space between the first corner 1011 of the third opening 213 and the adjacent first opening 211.

[0133] For example, as shown in Figure 5B, the distance between the spacer 300 and the first corner 1011 of the third opening 213 located on one side is the first distance S1, the shortest distance between the spacer 300 and the corner of the first opening 211 located on the other side is the second distance S2, and the first distance S1 is greater than or equal to the second distance S2. The relationship between the first distance S1 and the second distance S2, and the magnitude relationship with the distance S0 shown in Figure 5C, are as described above, and a detailed explanation is omitted here.

[0134] For example, Figure 5B schematically shows only a comparison of the distance relationship between the spacer 300 and the opening 210 when the third opening 213 includes the first corner 1011, and the distance relationship between the spacer 030 and the opening 021 when the first corner shown in Figure 5A is not installed, and the embodiments of this disclosure are not limited thereto. For example, as shown in Figure 9, the opposing corners of the first opening 211 and the third opening 213 may both be first corners 1011, and the spacer 300 is located between these two first corners 1011. For example, at least some of the corners of the first and third openings, excluding the opposing corners, may be installed as first corners. For example, at least one of the opposing corners of two adjacent second openings arranged in the row or column direction may be installed as a first corner 1011, and the spacer 300 is located between these two first corners.

[0135] In examples other than those shown in Figures 5B, 5C, and 9, a first corner is placed in at least one opening (which may be one, two, or three of the first, second, and third openings), and the distance between the spacer and the first corner of the opening is adjusted to increase the distance between the spacer and the two openings located on either side of it, thereby reducing the probability of spacer detachment and contributing to improved process yield.

[0136] For example, as shown in Figure 9, two adjacent openings 210 along at least one of the row and column directions each include a first corner 1011, and the first corners 1011 of the two openings 210 face each other. Embodiments of this disclosure schematically show that these two openings may be a first opening 211 and a third opening 213, but are not limited thereto, and these two openings may be two second openings 212.

[0137] For example, as shown in Figures 1 and 2, the orientation of the first corner 1011 of the aperture 210, which is configured to define the light-emitting region 101 of subpixels 100 of the same color arranged along the row direction (or column direction), is different, and the line C1 connecting the geometric centers of the light-emitting regions 101 of subpixels 100 of the same color located in the same row (or column) is not a straight line, but rather a polyline, for example.

[0138] For example, an aperture 210 configured to define the light-emitting region 101 of a third color subpixel 130 includes a first corner 1011, while an aperture 210 configured to define the light-emitting region 101 of a first color subpixel 110 does not include a first corner. The line connecting the geometric centers of the light-emitting regions of multiple first color subpixels 110 and multiple third color subpixels 130 located in the same row (or column) is not a straight line, but rather a polyline, for example.

[0139] For example, Figure 11A is a schematic diagram of the planar structure of a pixel definition layer and spacer according to another example of an embodiment of the present disclosure. As shown in Figure 11A, at least some of the openings 210 include at least two first corners 1011. For example, the first opening 211 includes four first corners 1011, the second opening 212 includes two first corners 1011, and the third opening 213 includes one first corner 1011. Embodiments of the present disclosure are not limited thereto, and the first opening may include at least two first corners.

[0140] For example, as shown in Figure 11A, each of the four openings 210 surrounding the spacer 300 includes a first corner 1011, and the corner of each opening 210 closest to the spacer 300 is also the first corner 1011. This allows for an increase in the dimensions of the spacer in two directions and / or an increase in the distance between the spacer and the opening in two directions, thereby reducing the probability of spacer detachment and contributing to improved product process yield and spacer support.

[0141] For example, as shown in Figure 11A, the first opening 211, the second opening 212, and the third opening 213 all include a first corner 1011, and the number of first corners 1011 included in at least two of the openings 210 of the first opening 211, the second opening 212, and the third opening 213 is different.

[0142] For example, at least some of the openings 210 include four corners, the four corners of the first opening 211, the second opening 212, and the third opening 213 include two, three, or four first corners 1011, and at least one of the four corners of the other two openings 210 of the first opening 211, the second opening 212, and the third opening 213 includes one first corner 1011.

[0143] For example, when each aperture has four corners, the embodiments of the present disclosure do not limit the number of first corners included in an aperture configured to define the light-emitting regions of different color subpixels, and the number of first corners included in an aperture configured to define the light-emitting regions of three color subpixels may all be different, and three such numbers can be selected from 1 to 4; the number of first corners included in two apertures configured to define the light-emitting regions of two color subpixels may be the same, and the number of corners included in a third type of aperture may be different, and one number of first corners included in two apertures can be selected from 1 to 4, and another number of first corners included in a third type of aperture can be selected from 1 to 4; two apertures configured to define only the light-emitting regions of two color subpixels may include first corners, and two different apertures can be selected from 1 to 4, and the embodiments of the present disclosure can be configured according to the needs of the product.

[0144] Of course, the embodiments of this disclosure are not limited to having four first corners in each opening; there may be three, or more than four, in which case the number of first corners in the opening can be set according to the above rules.

[0145] In this embodiment, while schematically showing that all corners included in the aperture of the pixel definition layer, excluding the first corner 1011, are right angles or acute angles formed by the intersection of two right sides, the embodiment is not limited to this. At least a portion of the corners other than the first corner 1011 may be a rounded chamfer (second corner), and the second corner may be a corner formed after a corner made by two sides of a polygon has been cut off, with the ratio of at least one cut-off portion of the two sides to the side being 0.05 to 0.2. The definition method for the second corner here may be the same as the definition method for the first corner 1011, but the curvature (or arc radians or length) of the second corner is smaller than the curvature (or arc radians or length) of the first corner 1011.

[0146] Figure 11B is a schematic diagram of the correspondence between the light-emitting layers of some subpixels and their corresponding apertures. As shown in Figure 11B, the shape and dimensions of the light-emitting layers 1300 of subpixels of the same color are the same, and the light-emitting layers of the third color subpixels are schematically shown, with the shape and dimensions of the light-emitting layers of the third color subpixels being the same in all cases. For example, the shape and dimensions of the light-emitting layers of other color subpixels, such as the first color subpixels, are all the same, and the shape and dimensions of the light-emitting layers of the first color subpixels are all the same.

[0147] For example, as shown in Figure 11B, the light-emitting layer 1300 includes a portion located within the opening 210 and other portions located in the pixel definition layer 200, the portion of the light-emitting layer 1300 in the pixel definition layer 200 has a boundary, and the distance S5 between the boundary and the first corner 1011 corresponding to the light-emitting layer 1300 is different from the distance S6 between the boundary and the other corner corresponding to the light-emitting layer 1300.

[0148] For example, the distance S5 between the boundary of the light-emitting layer 1300 and the first corner of the opening 210 corresponding to the light-emitting layer 1300 is greater than the distance S6 between the boundary and the other corners corresponding to the light-emitting layer 1300. For example, the distances S6 between the boundary and the other corners corresponding to the light-emitting layer 1300 may all be equal. For example, the ratio of distance S5 to distance S6 may be in the range of 1.1 to 10. For example, the ratio of distance S5 to distance S6 may be in the range of 1.2 to 7. For example, the ratio of distance S5 to distance S6 may be in the range of 1.3 to 5. For example, the ratio of distance S5 to distance S6 may be in the range of 1.4 to 3. For example, the ratio of distance S5 to distance S6 may be in the range of 1.5 to 2. For example, the ratio of distance S5 to distance S6 may be in the range of 1.6 to 1.8.

[0149] For example, as shown in Figure 11B, the orientation of the first corner 1011 of the aperture 210, which is configured to define the light-emitting region of the same color subpixel, may differ, but the light-emitting layer 1300 formed within the aperture 210 that defines the light-emitting region of the same color subpixel may have essentially the same shape and dimensions.

[0150] For example, each subpixel further includes a pixel circuit, which is connected to a light-emitting element and configured to drive the light-emitting element to emit light. For example, Figure 12 is an equivalent diagram of a pixel circuit. As shown in Figure 12, the pixel circuit 2000 includes a second reset transistor T1, a second light emission control transistor T5, a first light emission control transistor T6, a data writing transistor T4, a drive transistor T3, a threshold compensation transistor T2, a first reset control transistor T7, and a storage capacitor C. For example, the display board further includes a reset power signal line, a scan signal line, a power signal line, a reset control signal line, a light emission control signal line, and a data line.

[0151] For example, the first pole of the threshold compensation transistor T2 is connected to the first pole of the drive transistor T3, the second pole of the threshold compensation transistor T2 is connected to the gate of the drive transistor T3, the first pole of the first reset control transistor T7 is connected to the reset power signal line to receive the reset signal Vinit, the second pole of the first reset control transistor T7 is connected to the second electrode of the light-emitting element 1000, the first pole of the data writing transistor T4 is connected to the second pole of the drive transistor T3, the second pole of the data writing transistor T4 is connected to the data line to receive the data signal Data, the gate of the data writing transistor T4 is electrically connected to the scan signal line to receive the scan signal Gate, the first pole of the storage capacitor C is electrically connected to the power signal line, the second pole of the storage capacitor C is electrically connected to the gate of the drive transistor T3, the gate of the threshold compensation transistor T2 is electrically connected to the scan signal line to receive the compensation control signal, and the first reset transistor The gate of transistor T7 is electrically connected to the reset control signal line to receive the reset control signal Reset(N+1), the first pole of the second reset transistor T1 is electrically connected to the reset power signal line to receive the reset signal Vinit, the second pole of the second reset transistor T1 is electrically connected to the gate of the drive transistor T3, the gate of the second reset transistor T1 is electrically connected to the reset control signal line to receive the reset control signal Reset(N), the gate of the first light emission control transistor T6 is electrically connected to the light emission control signal line to receive the light emission control signal EM, the first pole of the second light emission control transistor T5 is electrically connected to the power signal line to receive the first power signal VDD, the second pole of the second light emission control transistor T5 is electrically connected to the second pole of the drive transistor T3, the gate of the second light emission control transistor T5 is electrically connected to the light emission control signal line to receive the light emission control signal EM, and the first electrode of the light-emitting element 1000 is connected to the voltage terminal VSS. The power signal line mentioned above is a signal line that outputs the voltage signal VDD, and can be connected to a voltage source to output a constant voltage signal, such as a positive voltage signal.

[0152] In the embodiments of this disclosure, the pixel circuit may be a 7T1C (i.e., seven transistors and one capacitor) structure as shown in Figure 12, or it may be a structure including other numbers of transistors, such as a 7T2C structure, a 6T1C structure, a 6T2C structure, or a 9T2C structure, and the embodiments of this disclosure are not limited thereto.

[0153] For example, Figure 13 is a schematic diagram of a partial planar structure of the active semiconductor layer, Figure 14 is a schematic diagram of a partial planar structure of the first conductive layer, Figure 15 is a schematic diagram of a partial planar structure of the second conductive layer, Figure 16 is a schematic diagram of a partial planar structure of the source-drain metal layer, Figure 17 is a schematic diagram of the planar structure of the second electrode of some subpixels, and Figure 18 is a stacking diagram of the light-emitting region of some subpixels and the active semiconductor layer, first conductive layer, second conductive layer and source-drain metal layer.

[0154] For example, as shown in Figure 13, the active semiconductor layer 3100 may be formed by patterning a semiconductor material. The active semiconductor layer 3100 may be used to manufacture the active layers of the second reset transistor T1, threshold compensation transistor T2, drive transistor T3, data writing transistor T4, second light emission control transistor T5, first light emission control transistor T6, and first reset control transistor T7. The active semiconductor layer 3100 includes the active layer pattern (channel region) and doping region pattern (source-drain doping region) for each transistor in each subpixel, and the active layer pattern and doping region pattern for each transistor in the same pixel circuit are set integrally.

[0155] Furthermore, the active layer may include an integrally formed low-temperature polycrystalline silicon layer, and the source and drain regions can be made conductive by doping or other means to achieve electrical connection between each structure. That is, the active semiconductor layer of each transistor in each subpixel is an overall pattern formed of p-silicon, and each transistor in the same pixel circuit includes a doping region pattern (i.e., source and drain regions) and an active layer pattern, and the active layers of different transistors are separated by a doping structure.

[0156] For example, the active semiconductor layer 3100 may be made from amorphous silicon, polycrystalline silicon, oxide semiconductor material, etc. The source region and drain region may be regions doped with n-type impurities or p-type impurities.

[0157] In Figure 13, each dashed rectangular frame indicates the portion where the first conductive layer 3200 and the active semiconductor layer 3100 overlap. As the channel region of each transistor (i.e., the active layer pattern), the active semiconductor layers on both sides of each channel region are made conductive by a process such as ion doping, as the first and second poles of each transistor (i.e., the doping region pattern). Since the source and drain of a transistor may be structurally symmetrical, there may be no physical distinction between the source and drain. In embodiments of this disclosure, it is directly stated that, except for the gate which is the control pole, one pole is the first pole and the other pole is the second pole in order to distinguish the transistors, and therefore, the first and second poles of all or some transistors in embodiments of this disclosure may be interchangeable as needed.

[0158] For example, the display substrate includes a gate insulating layer located away from the base substrate of the active semiconductor layer, for insulating the active semiconductor layer 3100 from a first conductive layer 3200 (i.e., a gate metal layer) that is formed later. Figure 14 shows the first conductive layer 3200 included in the display substrate, which is placed on the gate insulating layer and thereby insulated from the active semiconductor layer 3100. The first conductive layer 3200 may include the second electrode CC2 of the capacitor C, a plurality of scan signal lines 043 extending along the X direction, a plurality of reset control signal lines 044, a plurality of light emission control signal lines 045, and the gates of a second reset transistor T1, a threshold compensation transistor T2, a drive transistor T3, a data writing transistor T4, a second light emission control transistor T5, a first light emission control transistor T6, and a first reset control transistor T7.

[0159] For example, as shown in Figures 13 and 14, the gate of the data writing transistor T3 may be in the portion where the scan signal line 043 and the active semiconductor layer 3100 overlap, the gate of the first light emission control transistor T6 may be in the first portion where the light emission control line 045 and the active semiconductor layer 3100 overlap, and the gate of the second light emission control transistor T5 may be in the second portion where the light emission control line 045 and the active semiconductor layer 3100 overlap. The gate of the second reset transistor T1 is in the first portion where the reset control line 044 and the active semiconductor layer 3100 overlap, and the gate of the first reset control transistor T7 is in the second portion where the reset control line 044 and the active semiconductor layer 3100 overlap. The threshold compensation transistor T2 may be a thin-film transistor with a dual-gate structure. The first gate of the threshold compensation transistor T2 may be the portion where the scan signal line 043 and the active semiconductor layer 3100 overlap, and the second gate of the threshold compensation transistor T2 may be the portion where the protruding structure P protruding from the scan signal line 043 overlaps with the active semiconductor layer 3100. As shown in Figure 14, the gate of the drive transistor T1 may be the second pole CC2 of the capacitor C.

[0160] For example, a first insulating layer is formed on the first conductive layer 3200, and this is used to insulate the first conductive layer 3200 from a second conductive layer 3300 that is formed later.

[0161] For example, as shown in Figures 13 to 15, the second conductive layer 3300 includes the first electrode CC1 of capacitor C and a plurality of reset power signal lines 041 extending along the X direction. The first electrode CC1 of capacitor C overlaps at least partially with the second electrode CC2 of capacitor C to form capacitor C.

[0162] For example, as shown in Figure 15, the display substrate further includes a plurality of covering portions S, and each threshold compensation transistor T2 includes two gates and an active semiconductor layer 3100 located between the two gates. Along the direction perpendicular to the base substrate, the covering portions S overlap with the active semiconductor layer 3100 between the two gates, the data line 910 (described later), and the power signal line 920 (described later).

[0163] For example, a second insulating layer is formed on the second conductive layer 3300, and this is used to insulate the second conductive layer 3300 from a source-drain metal layer 3400 that is formed later.

[0164] For example, as shown in Figure 16, the source-drain metal layer 3400 includes data lines 910 and power signal lines 920 extending along the Y direction. The data line 910 is electrically connected to the second pole of the data writing transistor T2 via via holes penetrating the gate insulating layer, the first insulating layer, and the second insulating layer. The power signal line 920 is electrically connected to the first pole of the second light emission control transistor T5 via via holes penetrating the gate insulating layer, the first insulating layer, and the second insulating layer. The power signal line 920 and the data line 910 are arranged alternately along the X direction. The power signal line 920 is electrically connected to the first pole CC1 of the capacitor C via a via hole penetrating the second insulating layer.

[0165] For example, a passivation layer and a planarization layer may be installed on the side of the source-drain metal layer 3400 that is away from the base substrate to protect the source-drain metal layer 3400.

[0166] For example, as shown in Figure 16, each pixel circuit further includes connection sections 052 and 053 located on the same layer as the data line 910, wherein connection section 052 is configured to connect the second pole of the threshold compensation transistor T2 to the gate of the drive transistor T3, and connection section 053 is configured to connect the first pole of the first reset control transistor T7 to the reset power signal line 041. For example, one end of connection section 052 is electrically connected to the second pole of the threshold compensation transistor T2 via a via hole penetrating the gate insulating layer, the first insulating layer, and the second insulating layer, and the other end of connection section 052 is electrically connected to the gate of the drive transistor T3 (i.e., the second pole CC2 of capacitor C) via a via hole penetrating the first insulating layer and the second insulating layer. One end of the connection portion 053 is electrically connected to the reset power signal line 041 via a via hole penetrating the second insulating layer, and the other end of the third connection portion 053 is electrically connected to the first pole of the first reset control transistor T7 via a via hole penetrating the gate insulating layer, the first insulating layer, and the second insulating layer.

[0167] For example, as shown in Figure 16, each pixel circuit further includes a connection section 055 located on the same layer as the data line 910, and the connection section 055 is used to connect the second electrode of the light-emitting element to the second pole of the first reset control transistor T7.

[0168] For example, as shown in Figures 2-3 and Figure 17, the second electrode 1200 of each subpixel 100 includes a main electrode 1201, and the shape of the main electrode 1201 of at least some of the second electrodes 1200 may be the same as the shape of its light-emitting region 101 or the corresponding aperture 210. For example, if the shape of the light-emitting region 101 of the first color subpixel 110 is rectangular, the shape of the main electrode of its second electrode 1210 may be rectangular.

[0169] For example, the geometric center of the main electrode 1201 may substantially overlap with the geometric center of the corresponding light-emitting region 101, or the distance between the two geometric centers may be very small.

[0170] For example, the orthographic projection of the aperture 210 of the pixel definition layer 200 on the base substrate 10 lies within the orthographic projection of the main electrode 1201 of the second electrode 1200 of the corresponding light-emitting element 1000 on the base substrate 10.

[0171] For example, the main electrode 1201 of a corresponding subpixel 100 within an opening 210 having at least a partial first corner 1011 has substantially the same shape as the opening 210. For example, a third opening 213 configured to define the light-emitting region 101 of a third color subpixel 130 includes the first corner 1011, and the main electrode 1201 of the second electrode 1230 of the third color subpixel 130 also includes a corner 2101 corresponding to the shape of the first corner 1011. Embodiments of this disclosure ensure display effectiveness and contribute to improving the transmittance of the display area where the second electrode is located by arranging the main electrode of a corresponding subpixel within an opening having a first corner to have substantially the same shape as the opening, and further contribute to the application integration of underscreen fingerprint recognition or underscreen camera technology.

[0172] For example, as shown in Figure 17, each second electrode 1200 further includes a connecting electrode 1202. For example, the connecting electrode 1202 may be an integral part of the main electrode 1201, and the connecting electrode 1202 may be configured to connect to a transistor of the pixel circuit via a via hole.

[0173] Figure 18 shows the positional relationship between the light-emitting regions of some subpixels (for example, the light-emitting region of the first subpixel 110, the light-emitting region of the second subpixel 120, and the light-emitting region of the third subpixel 130) and the active semiconductor layer, the first conductive layer, the second conductive layer, and the source-drain metal layer.

[0174] For example, the embodiments of this disclosure are not limited to the shape of the second color subpixel being rectangular, but may also be elliptical, olive-shaped (for example, a shape with a wide middle section and narrower ends), or other shapes.

[0175] Another embodiment of the present disclosure provides a display device, which includes the display substrate described above.

[0176] In the display device according to the embodiment of this disclosure, by installing spacers at the spacing positions of the apertures in the pixel definition layer corresponding to the first corner, it is possible to improve the process yield or improve the support function of the spacers.

[0177] For example, the display device according to the embodiment of this disclosure may be a light-emitting diode display device.

[0178] For example, the display device may further include a cover plate located on the display side of the display board.

[0179] For example, the display device may be any product or component having a display function, such as a television, digital camera, mobile phone, watch, tablet computer, laptop computer, or navigator, and this embodiment is not limited to these.

[0180] For example, the display device may be a display device having a camera below the screen, and the display device includes functional components, including at least one of the following: a camera module (e.g., a front-facing camera module), a 3D structured optical module (e.g., a 3D structured optical sensor), a time-of-flight 3D imaging module (e.g., a time-of-flight sensor), an infrared sensing module (e.g., an infrared sensing sensor).

[0181] The following points need to be explained.

[0182] (1) The drawings of the embodiments of this disclosure relate only to the structures relating to the embodiments of this disclosure, and other structures should refer to conventional designs.

[0183] (2) Features of identical and different embodiments of the present disclosure can be combined with each other, provided there is no inconsistency.

[0184] The foregoing are merely exemplary embodiments of the present disclosure and are not intended to limit the scope of protection of the present disclosure, which is determined by the appended claims.

Claims

1. A display board, Base board and Located on the base substrate, a plurality of subpixels including a plurality of light-emitting regions, A pixel definition layer located on the base substrate and including a plurality of apertures for defining the plurality of light-emitting regions, The pixel definition layer includes a plurality of spacers located on the side away from the base substrate and distributed in the spacing between adjacent apertures, The shape of at least one opening is the shape obtained by cutting off at least one vertex angle of a polygon, the corner of the opening includes a first corner, the first corner is a corner formed after the vertex angle formed by two sides of the polygon has been cut off, At least one spacer is placed in the space between the first corner and the adjacent opening, and the line connecting the geometric center of the opening in which the first corner is located and the geometric center of the adjacent opening passes through the first corner and the spacer. A display board in which the area of ​​the region that does not overlap with the first corner and the corresponding vertex angle of the polygon is larger than the area of ​​the region that does not overlap with each corner and the corresponding vertex angle of the polygon at at least some of the other corners, and the first corner and one other corner of the opening are diagonal.

2. The display board according to claim 1, wherein the ratio of the length of at least one cut-off portion of the two sides to the length of the side is 0.2 to 0.

8.

3. The display board according to claim 1 or 2, wherein each spacer is installed in the space between the first corner and the opening adjacent to the first corner.

4. The display board according to any one of claims 1 to 3, wherein the number of openings having the first corner portion is equal to or greater than the number of the plurality of spacers.

5. The display substrate according to any one of claims 1 to 4, wherein the opening having the first corner is configured to define the light-emitting region of at least one color subpixel.

6. The display substrate according to claim 5, wherein the opening having the first corner includes an opening of the same type.

7. The display substrate according to claim 5, wherein the opening having the first corner and configured to define a light-emitting region of the same color subpixel includes at least two types of openings, in which different types of openings the direction in which the vertex of the first corner toward the vertex of the opposite corner is different, and at least some of the plurality of spacers are distributed at the intervals corresponding to the same type of opening.

8. The display substrate according to claim 7, wherein the plurality of spacers include a plurality of first spacers, the plurality of first spacers are distributed at intervals corresponding to the first corners of the same type of opening, and the plurality of first spacers are uniformly distributed.

9. The at least two types of openings include a first type opening and a second type opening, and the plurality of first spacers are distributed at intervals corresponding to the first corners of at least some of the first type openings. The display substrate according to claim 8, wherein the plurality of spacers further comprises a plurality of second spacers, the plurality of second spacers are distributed at intervals corresponding to the first corners of at least some of the second type openings, and the plurality of second spacers are uniformly distributed.

10. The display substrate according to claim 9, wherein the at least two types of openings further include a third type of opening and a fourth type of opening, and the direction in which the vertices of the first corner of two of the first type of opening, the second type of opening, the third type of opening and the fourth type of opening move toward the vertices of the opposite corners, and the direction in which the vertices of the first corner of two other types of openings move toward the vertices of the opposite corners.

11. The display substrate according to claim 5, wherein at least some of the spacers are distributed in the spacing between the first corner of the opening and the opening adjacent to the first corner, which are configured to define different color subpixels.

12. The display board according to claim 5, wherein at least two openings adjacent to at least one spacer each include the first corner, and the first corner of each of the at least two openings is the corner of the opening in which it is located that is closest to the spacer.

13. The display substrate according to any one of claims 1 to 12, wherein each subpixel includes a light-emitting element, the light-emitting element includes a first electrode, a light-emitting layer and a second electrode stacked together, the second electrode is located on the side of the light-emitting layer facing the base substrate and the second electrode includes a main electrode, and the main electrode of the corresponding subpixel in the opening having at least a partial first corner has substantially the same shape as the opening.

14. The plurality of subpixels include a plurality of first-color subpixels, a plurality of second-color subpixels, and a plurality of third-color subpixels, the plurality of first-color subpixels and the plurality of third-color subpixels are arranged alternately along both the row and column directions to form a plurality of first-pixel rows and a plurality of first-pixel columns, the plurality of second-color subpixels are arranged in an array along both the row and column directions to form a plurality of second-pixel rows and a plurality of second-pixel columns, the plurality of first-pixel rows and the plurality of second-pixel rows are arranged alternately along the column direction and offset from each other in the row direction, the plurality of first-pixel columns and the plurality of second-pixel columns are arranged alternately along the row direction and offset from each other in the column direction, The plurality of apertures include a plurality of first apertures, a plurality of second apertures, and a plurality of third apertures, wherein the plurality of first apertures are configured to define the light-emitting regions of the plurality of first color subpixels, the plurality of second apertures are configured to define the light-emitting regions of the plurality of second color subpixels, and the plurality of third apertures are configured to define the light-emitting regions of the plurality of third color subpixels. The display substrate according to any one of claims 1 to 13, wherein at least one of the first opening, the second opening, and the third opening includes the first corner.

15. The display board according to claim 14, wherein at least some of the plurality of spacers are distributed in the spacing between two adjacent openings arranged along at least one of the column direction and the row direction.

16. Along one of the row and column directions, four second-color subpixels are arranged between adjacent spacers, and along the other of the row and column directions, two first-color subpixels and two third-color subpixels are arranged between adjacent spacers, or Along one of the row and column directions, six second-color subpixels are arranged between adjacent spacers, and along the other of the row and column directions, three first-color subpixels and three third-color subpixels are arranged between adjacent spacers, or Along one of the row and column directions, four second-color subpixels are arranged between adjacent spacers, and along the other of the row and column directions, three first-color subpixels and three third-color subpixels are arranged between adjacent spacers, or The display board according to claim 15, wherein six second-color subpixels are arranged between adjacent spacers along one of the row direction and the column direction, and two first-color subpixels and two third-color subpixels are arranged between adjacent spacers along the other of the row direction and the column direction.

17. The display substrate according to claim 15 or 16, wherein the opening having the first corner and configured to define a light-emitting region of the same color subpixel includes at least two types of openings, in which different types of openings the direction in which the vertex of the first corner is directed toward the vertex of the opposite corner is different, and the plurality of spacers include a plurality of first spacers and a plurality of second spacers, the first spacers and the second spacers are distributed at intervals corresponding to the first corners of the different types of openings.

18. The display substrate according to claim 17, wherein four second color subpixels are arranged between adjacent first spacers along one of the row direction and the column direction, two first color subpixels and two third color subpixels are arranged between adjacent first spacers along the other of the row direction and the column direction, four second color subpixels are arranged between adjacent second spacers along one of the row direction and the column direction, and two first color subpixels and two third color subpixels are arranged between adjacent second spacers along the other of the row direction and the column direction.

19. The display board according to any one of claims 14 to 18, wherein at least a portion of the third opening includes the first corner, and each spacer is installed in the space between the first corner of the third opening and the adjacent first opening.

20. The display substrate according to any one of claims 1 to 18, wherein the distance between the spacer and the first corner located on one side thereof is a first distance, the shortest distance between the spacer and the corner of the opening located on the other side thereof is a second distance, and the first distance is greater than or equal to the second distance.

21. The display board according to any one of claims 14 to 18, wherein the line connecting the opposing corners of two openings located on both sides of the spacer and adjacent to the spacer in at least one of the row direction and the column direction is located on the side away from the first corner of the geometric center of the spacer.

22. The display substrate according to any one of claims 14 to 18, wherein two adjacent openings along at least one of the row direction and the column direction each include the first corner, and the first corners of the two openings are the two corners closest to each other.

23. The display substrate according to any one of claims 1 to 18, wherein at least a portion of the openings includes at least two first corners.

24. A display board according to any one of claims 1 to 18, wherein the maximum dimension of at least one spacer in the direction parallel to the line connecting the geometric center of the opening in which the first corner is located and the geometric center of the adjacent opening is a first dimension, the maximum dimension in the direction perpendicular to the line connecting is a second dimension, and the first dimension is smaller than the second dimension.

25. The display board according to any one of claims 1 to 18, wherein the display board includes a display area, at least a portion of the plurality of spacers and the plurality of subpixels are located in the display area, and the ratio of the number of spacers located in the space between the first corner and the opening adjacent to the first corner to the number of spacers located in the display area is 50% or more.

26. The display substrate according to claim 13, wherein the shape and dimensions of the light-emitting layers of subpixels of the same color are the same, and the distance between the boundary of the light-emitting layer in the pixel definition layer and the first corner corresponding to the light-emitting layer is different from the distance between the boundary of the light-emitting layer in the pixel definition layer and the other corner corresponding to the light-emitting layer.

27. The display substrate according to any one of claims 1 to 18, wherein the corner of the opening further includes a second corner, and the distance between the intersection of two sides or extensions connecting the endpoints of the first corner and the geometric center of the opening is greater than the distance between the intersection of the two sides or extensions forming the second corner and the geometric center of the opening.

28. A display device including a display board according to any one of claims 1 to 27.

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