Display substrate and display device

Abstract

To provide a display substrate and a display.SOLUTION: A display substrate comprises first sub-pixels (111), second sub-pixels (112), and first spacers (0101). A connection line between a center (C1) of the first sub-pixel (111) and a center (C2) of the second sub-pixel (112) is a center connection line (CL1). The center connection line (CL1) is not perpendicular to a first direction (X). The first direction (X) is at least either one of a row direction or a column direction. The first spacer (0101) is installed between the first sub-pixel (111) and the second sub-pixel (112), and an extension direction (E01) of the first spacer (0101) located between the first sub-pixel (111) and the second sub-pixel (112) is not perpendicular to the first direction (X). Consequently, the display substrate can solve color fogging at different visual angles to improve display quality.SELECTED DRAWING: Figure 2A

Description

[Technical Field]

[0001] This patent application claims priority to Chinese Patent Application No. 201810135948.6 filed on February 9, 2018, the entire contents of which are incorporated herein by reference in their entirety.

[0002] The embodiments of the present disclosure relate to a display substrate and a display device. [Background technology]

[0003] With the continuous development of display technology, the demand for display device resolution is increasing. Due to advantages such as high display quality, the application range of high-resolution display devices is also expanding. Typically, the resolution of a display device can be increased by reducing the pixel size and the spacing between pixels. However, the reduction in pixel size and the spacing between pixels requires increasingly higher precision in the manufacturing process, which results in increased difficulty and manufacturing costs for the display device.

[0004] On the other hand, sub-pixel rendering (SPR) technology takes advantage of the difference in resolution of the human eye for sub-pixels of different colors. Unlike the usual three sub-pixels of red, green, and blue, SPR technology simply defines the pixel mode and shares sub-pixels of colors that are insensitive to resolution at certain positions between different pixels, thereby simulating and achieving the same pixel resolution performance with relatively fewer sub-pixels, thereby reducing the difficulty of the manufacturing process and reducing manufacturing costs.

[0005] In a display device, spacers are usually provided to provide support. Summary of the Invention [Problem to be solved by the invention]

[0006] The embodiments of the present disclosure provide a display substrate and a display device to reduce color cast and improve display quality at different viewing angles. [Means for solving the problem]

[0007] At least one embodiment of the present disclosure provides a display substrate, comprising a first subpixel, a second subpixel, and a first spacer. A connecting line between a center of the first subpixel and a center of the second subpixel is a central connecting line, the central connecting line is not perpendicular to a first direction, and the first direction is at least one of a row direction and a column direction. The first spacer is disposed between the first subpixel and the second subpixel, and an extension direction of the first spacer between the first subpixel and the second subpixel is not perpendicular to the first direction.

[0008] For example, the extending direction of the first spacers forms an angle with the first direction in the range of 40° to 50° or 130° to 140°.

[0009] For example, the included angle is 45° or 135°.

[0010] For example, the central connecting line is not parallel to the first direction.

[0011] For example, the display substrate includes a plurality of pixel groups each having a first subpixel, a second subpixel, a third subpixel, and a fourth subpixel, and the first spacer is located between the first subpixel and the second subpixel belonging to different pixel groups.

[0012] For example, in the pixel group, the connecting line between the center of the second subpixel and the center of the third subpixel is a first line segment, the first subpixel and the fourth subpixel are located between the second subpixel and the third subpixel and are respectively disposed on both sides of the first line segment, and the connecting line between the center of the first subpixel and the center of the fourth subpixel is a second line segment whose length is shorter than that of the first line segment.

[0013] For example, the ratio of the length of the second line segment to the length of the first line segment is 3 / 4 or less.

[0014] For example, the display substrate further includes a second spacer, the second spacer being located between adjacent pixel groups and being installed between a fourth subpixel and a second subpixel of a different pixel group or between a fourth subpixel and a third subpixel of a different pixel group, and the extension direction of the second spacer between the fourth subpixel and the second subpixel or between the fourth subpixel and the third subpixel is not perpendicular to the first direction.

[0015] For example, the first spacer is disposed between the first and second sub-pixels of adjacent pixel groups, and / or between the first and fourth sub-pixels of adjacent pixel groups.

[0016] For example, the first spacer and the second spacer located around the second subpixel or the fourth subpixel form a spacer pair, and the first spacer and the second spacer in the spacer pair are located on the same side of the second subpixel or the third subpixel.

[0017] For example, in the same pixel group, no spacer is provided between the first subpixel, the second subpixel, the third subpixel, and the fourth subpixel.

[0018] For example, in the pixel group, the first sub-pixel and the fourth sub-pixel are both elongated, and the extending direction of the first sub-pixel does not overlap with the extending direction of the fourth sub-pixel.

[0019] For example, the angle between the extending direction of the first sub-pixel and the extending direction of the fourth sub-pixel is 70° to 100°.

[0020] For example, the first subpixel and the fourth subpixel are arranged symmetrically with respect to the first line segment, and / or the second subpixel and the third subpixel are arranged symmetrically with respect to the second line segment.

[0021] For example, the first line segment extends in a first direction, the second line segment extends in a second direction, the multiple pixel groups are arranged in an array to form multiple rows and multiple columns, the pixel groups in even rows are staggered from the pixel groups in odd rows, the length of the central connecting line between adjacent second and third subpixels in two adjacent pixel groups in the first direction is smaller than the length of the first line segment, and the length of the central connecting line between adjacent first and fourth subpixels in two adjacent pixel groups in the second direction in adjacent odd rows or adjacent even rows is larger than the length of the second line segment.

[0022] For example, the extension of the second line segment of each pixel group passes through the midpoint of the center connecting lines of two pixel groups that are adjacent to the pixel group in the second direction and are in the same row.

[0023] For example, in adjacent odd rows or adjacent even rows, the intersection of the central connecting line of two third subpixels in two adjacent pixel groups arranged in the second direction and the first line segment in the pixel group located between the two third subpixels is located between the center of the first line segment and the center of the second subpixel.

[0024] For example, at least one of the first subpixel and the fourth subpixel is a subpixel of a color to which the human eye is sensitive.

[0025] For example, along the first direction, the widths of the first subpixel, the second subpixel, the third subpixel, and the fourth subpixel are the same.

[0026] For example, the first line segment extends in the first direction, the second line segment extends in the second direction, the first spacer and the second spacer are strip-shaped, and the extension direction of the strip is different from both the first direction and the second direction.

[0027] For example, at least one of the first spacer and the second spacer does not overlap with the central connecting line between the first sub-pixel and the third sub-pixel.

[0028] For example, the first line segment extends in the first direction, the second line segment extends in the second direction, and a direct projection of the first spacer on a straight line along the first direction does not overlap or partially overlaps with a direct projection of at least one of the second subpixel and the third subpixel on a straight line along the first direction.

[0029] For example, the ratio of the total number of the first spacers and the second spacers to the number of subpixels is 0.3 to 1, and the subpixels include the first subpixel, the second subpixel, the third subpixel, and the fourth subpixel.

[0030] For example, the first spacer and the second spacer are both transparent spacers.

[0031] At least one embodiment of the present disclosure further provides a display substrate, a pixel array structure including a plurality of pixel groups, each pixel group including a first sub-pixel, a second sub-pixel, a third sub-pixel, and a fourth sub-pixel, wherein in each pixel group, a connecting line between a center of the second sub-pixel and a center of the third sub-pixel is a first line segment, the first sub-pixel and the fourth sub-pixel are located between the second sub-pixel and the third sub-pixel and are respectively disposed on both sides of the first line segment, and the connecting line between the center of the first sub-pixel and the center of the fourth sub-pixel is a second line segment whose length is shorter than that of the first line segment; The display substrate is a first spacer located between adjacent first and second subpixels in adjacent pixel groups; a second spacer located between adjacent fourth and second subpixels in adjacent pixel groups; and a third spacer located between a first sub-pixel and a fourth sub-pixel in the pixel group.

[0032] For example, the plurality of pixel groups are arranged in an array to form a plurality of rows and a plurality of columns, and the pixel groups in the even rows and the pixel groups in the odd rows are staggered.

[0033] For example, pixel groups in even-numbered rows and pixel groups in odd-numbered rows are shifted in a first direction, which is the row direction, by half the length of the pixel groups in the first direction.

[0034] At least one embodiment of the present disclosure further provides a display device including a display substrate according to at least one embodiment of the present disclosure.

[0035] In order to more clearly explain the technical solutions of the embodiments of the present disclosure, the drawings of the embodiments will be briefly described below. It should be apparent that the drawings described below only relate to some embodiments of the present disclosure, but do not limit the present disclosure. [Brief explanation of the drawings]

[0036] [Figure 1A] FIG. 2 is a schematic diagram of a display substrate. [Figure 1B] FIG. 2 is a cross-sectional view of a display substrate. [Figure 1C] 1 is a schematic diagram of a display device viewed at a specific viewing angle. [Figure 2A] FIG. 1 is a schematic diagram of a display substrate according to an embodiment of the present disclosure. [Figure 2B] FIG. 10 is a schematic diagram of a display substrate according to another embodiment of the present disclosure. [Figure 2C] FIG. 10 is a schematic diagram of a display substrate according to another embodiment of the present disclosure. [Figure 2D] FIG. 1 is a schematic diagram of a display substrate according to an embodiment of the present disclosure. [Figure 2E] FIG. 2 is a schematic diagram of a pixel array structure on a display substrate according to an embodiment of the present disclosure. [Figure 3A] FIG. 2 is a schematic diagram of a pixel array structure on a display substrate according to an embodiment of the present disclosure. [Figure 3B] FIG. 10 is a schematic diagram of a pixel array structure on a display substrate according to another embodiment of the present disclosure. [Figure 3C] FIG. 10 is a schematic diagram of a pixel array structure on a display substrate according to another embodiment of the present disclosure. [Figure 4] FIG. 2 is a schematic diagram of a pixel array structure on a display substrate according to an embodiment of the present disclosure. [Figure 5A] FIG. 10 is a schematic diagram of a pixel array structure on a display substrate according to another embodiment of the present disclosure. [Figure 5B] FIG. 10 is a schematic diagram of a pixel array structure on a display substrate according to another embodiment of the present disclosure. [Figure 6] FIG. 10 is a schematic diagram of a pixel array structure on a display substrate according to another embodiment of the present disclosure. [Figure 7A] FIG. 10 is a schematic diagram of a pixel array structure on a display substrate according to another embodiment of the present disclosure. [Figure 7B] FIG. 10 is a schematic diagram of a pixel array structure on a display substrate according to another embodiment of the present disclosure. [Figure 8] FIG. 10 is a schematic diagram of a pixel arrangement structure and driving lines and data lines of a display substrate according to another embodiment of the present disclosure. [Figure 9] 1 shows a schematic diagram of a display substrate. [Figure 10] 1 shows a schematic diagram of a display substrate according to one or more embodiments of the present disclosure. [Figure 11] 1 shows a schematic diagram of a display substrate according to one or more embodiments of the present disclosure. [Figure 12] FIG. 2 is a cross-sectional view of a display substrate according to an embodiment of the present disclosure. DETAILED DESCRIPTION OF THE INVENTION

[0037] In order to make the objectives, technical solutions and advantages of the embodiments of the present disclosure clearer, the technical solutions of the embodiments of the present disclosure will be described clearly and completely below with reference to the drawings of the embodiments of the present disclosure. It is obvious that the described embodiments are only some of the embodiments of the present disclosure, but not all of the embodiments. Based on the described embodiments of the present disclosure, other embodiments that can be conceived by those skilled in the art without any creative efforts all belong to the scope of protection of the present disclosure.

[0038] Unless otherwise specified, technical or scientific terms used in this disclosure should have the common meaning understood by those skilled in the art. The terms "first," "second," and similar terms used in this disclosure do not denote order, quantity, or importance, but merely distinguish between different components. Similar terms such as "comprise" or "include" mean that the element or item preceding the term covers the element or item listed after the term and equivalents thereof, but does not exclude other elements or items. Similar terms such as "connect" or "coupled" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

[0039] FIG. 1A shows a display substrate. As shown in FIG. 1A, the display substrate has a pixel array structure, which is a typical pentile array, in which one minimum repeating unit includes two green subpixels 0111, one red subpixel 0112, and one blue subpixel 0113. The pixel array structure is uniformly distributed, facilitating a high pixel per inch (PPI) display. In each row, the minimum repeating units are arranged along a first direction X, and spacers 010 are disposed between adjacent subpixels of the same minimum repeating unit and between adjacent subpixels of different minimum repeating units. The spacers 010 extend in a second direction Y perpendicular to the first direction X.

[0040] FIG. 1B shows a schematic cross-sectional view of a display substrate, which may be a cross-sectional view taken along the AB direction in FIG. 1A. As shown in FIG. 1B, a green subpixel 0111, a red subpixel 0112, a blue subpixel 0113, and a spacer 010 are disposed on a base substrate 1101. When the display substrate is viewed at a certain angle, the spacer influences the luminance of each subpixel to different degrees, resulting in a color cast in the field of view. For example, when the display substrate is viewed at different angles along the first direction X, the spacer 010 blocks some of the light from the subpixels from reaching the human eye, thereby resulting in a color cast at different viewing angles. That is, when the same screen is viewed from the left and right sides of FIG. 1B, a color cast in the field of view is observed.

[0041] Figure 1C shows a schematic diagram of a display device viewed at a specific viewing angle. Figure 1C shows an example of viewing from the right side of the display device. Because the spacer 010 blocks light from some subpixels, the color of the same screen when viewed from the left side is different from the color when viewed from the right side.

[0042] 2A shows a display substrate according to at least one embodiment of the present disclosure, which includes a first subpixel 111, a second subpixel 112, and a first spacer 0101. A central connecting line CL1 connects a center C1 of the first subpixel 111 to a center C2 of the second subpixel 112, and the central connecting line CL1 is not perpendicular to a first direction X, which is at least one of a row direction and a column direction.

[0043] The first spacer 0101 is disposed between the first sub-pixel 111 and the second sub-pixel 112, and the extension direction of the first spacer 0101 between the first sub-pixel 111 and the second sub-pixel 112 is not perpendicular to the first direction X.

[0044] For example, the first spacer 0101 extends between the first subpixel 111 and the second subpixel 112, and the extension direction E01 of the first spacer 0101 is not perpendicular to the first direction X. In the embodiments of the present disclosure, a case where the first direction X is the row direction will be described as an example. The extension direction E01 of the first spacer 0101 is different from both the first direction and the second direction.

[0045] In at least one embodiment of the display substrate of the present disclosure, when the arrangement of the spacers is adjusted so that the extension direction E01 of the first spacer 0101 is not perpendicular to the first direction X, the blocking of the first sub-pixel 111 by the first spacer can be reduced, and color cast in the field of view when viewing the screen from different perspectives can be reduced.

[0046] 2A , in a display substrate according to one or more embodiments of the present disclosure, the extension direction E01 of the first spacers 0101 forms an included angle θ1 with the first direction X, for example, in the range of 40° to 50° or 130° to 140°, in order to reduce the blocking of the first sub-pixels 111 by the first spacers 0101. Furthermore, for example, when the included angle θ1 is 45° or 135°, the blocking of the first sub-pixels 111 by the first spacers 0101 is minimized, thereby significantly improving the color cast of the viewing field.

[0047] As shown in FIG. 2A, in a display substrate according to one or more embodiments of the present disclosure, the central connecting line CL1 is not parallel to the first direction X.

[0048] 2A , in a display substrate according to one or more embodiments of the present disclosure, the second subpixel 112 is included in a first pixel group 011, and the first subpixel 111 is included in a second pixel group 012. The first pixel group 011 further includes a first subpixel 111, a third subpixel 113, and a fourth subpixel 114, and the second pixel group 012 further includes a second subpixel 112, a third subpixel 113, and a fourth subpixel 114. In the first pixel group 011 and the first pixel group 011, a connecting line between the center C2 of the second subpixel 112 and the center C3 of the third subpixel 113 is a first line segment LS1, and the first subpixel 111 and the fourth subpixel 114 are located between the second subpixel 112 and the third subpixel 113, respectively, on both sides of the first line segment LS1. The first pixel group 011 and the second pixel group 012 are adjacent in the column direction and offset in the row direction. For example, the first pixel group 011 and the second pixel group 012 can both be referred to as pixel group 01.

[0049] 2A , in a display substrate according to one or more embodiments of the present disclosure, in the first pixel group 011 and the second pixel group 012, the connecting line between the center C1 of the first subpixel 111 and the center C4 of the fourth subpixel 114 is the second line segment LS2, and the length ratio of the second line segment LS2 to the first line segment LS1 is 3 / 4 or less. Therefore, when the first subpixel 111 and the fourth subpixel 114 are subpixels of the same color, the light-emitting layer patterns of the first subpixel 111 and the fourth subpixel 114 in the same pixel group 01 can be formed by deposition through the same opening in a mask.

[0050] According to a display substrate according to one or more embodiments of the present disclosure, the first spacer 0101 may be disposed between the first subpixel 111 and the second subpixel 112 of adjacent pixel groups, and / or between the first subpixel 111 and the fourth subpixel 114 of adjacent pixel groups.

[0051] As shown in FIG. 2A , a display substrate according to one or more embodiments of the present disclosure further includes a second spacer 0102, where the second spacer 0102 is located between adjacent pixel groups 01, and the second spacer 0102 is disposed between the fourth subpixel 114 and the second subpixel 112 of a different pixel group 01 or between the fourth subpixel 114 and the third subpixel 112 of a different pixel group 01, and the extension direction of the second spacer 0102 between the fourth subpixel 114 and the second subpixel 115 or between the fourth subpixel 114 and the third subpixel 113 is not perpendicular to the first direction X.

[0052] For example, the second spacer 0102 extends between the fourth subpixel 114 and the second subpixel 112 of a different pixel group 01, or between the fourth subpixel 114 and the third subpixel 113 of a different pixel group 01. The extension direction E02 of the second spacer 0102 is not perpendicular to the first direction X. For example, the extension direction E02 of the second spacer 0102 is different from both the first direction and the second direction.

[0053] For example, the display substrate includes a plurality of first pixel groups 011 in odd-numbered rows and a plurality of second pixel groups 012 in even-numbered rows. The display substrate further includes second spacers 0102, which extend between the fourth sub-pixels 114 in at least one of the first pixel groups 011 and the second pixel groups 012 and at least one of the second sub-pixels 112 and third sub-pixels 113 adjacent to the fourth sub-pixels 114 in the column direction. The extension direction E02 of the second spacers 0102 is not perpendicular to the first direction X.

[0054] For example, to reduce the blocking of the fourth subpixel 114 by the second spacer 0102, the extension direction E02 of the second spacer 0102 and the first direction X may form an included angle θ2, for example, in the range of 40° to 50° or 130° to 140°. Furthermore, for example, if the included angle θ2 is 45° or 135°, the blocking of the fourth subpixel 114 by the second spacer is minimized, thereby further reducing the blocking of pixels that are sensitive to the human eye and significantly improving color cast in the field of view.

[0055] 2A, the spacer may be a strip-shaped spacer whose extension direction is different from both the first direction and the second direction, and the spacer includes a first spacer 0101 and a second spacer 0102. For example, the shape of the spacer is the shape of an orthogonal projection of the spacer on the base substrate 1. Similarly, the shape of the subpixel is the shape of an orthogonal projection of the subpixel on the base substrate 1.

[0056] As shown in FIG. 2A , the connecting line between the center of the fourth subpixel 114 in the second pixel group 012 and the center of the third subpixel 113 or the fourth subpixel 114 in the first pixel group 011 adjacent to the fourth subpixel 114 is a central connecting line CL2, which is not perpendicular to the first direction X.

[0057] In a display substrate according to one or more embodiments of the present disclosure, at least one of the first subpixel 111 and the fourth subpixel 114 is a subpixel of a color to which the human eye is sensitive. For example, the second subpixel 112 and the third subpixel 113 may be a subpixel of a color to which the human eye is insensitive. In embodiments of the present disclosure, reducing the blocking of the subpixel of the sensitive color by the first spacer and / or the second spacer can reduce color cast in different viewing angles. For example, the first spacer and / or the second spacer may be located between the subpixel of the sensitive color and the subpixel of the insensitive color.

[0058] 2A , in a display substrate according to one or more embodiments of the present disclosure, a first spacer 0101 and a second spacer 0102 located around the second subpixel 112 or the fourth subpixel 114 form a spacer pair 01012, and the first spacer 0101 and the second spacer 0102 in the spacer pair 01012 are located on the same side of the second subpixel 112 or the third subpixel 113. In FIG. 2A , an example is shown in which the spacer pair 01012 is located on the same side of the second subpixel 112. The spacer pair 01012 is located around the subpixel with a low color, thereby reducing the influence of the spacer pair 01012 on color display and reducing color cast in the viewing field.

[0059] For AMOLED display substrates, the spacer plays two roles: one is to support the mask used for depositing the light-emitting layer pattern, and the other is to support the cover plate during packaging.

[0060] 2A , in a display substrate according to one or more embodiments of the present disclosure, in at least one of the first pixel group 011 and the second pixel group 012 (in the same pixel group 01), no spacers are provided between the first subpixel 111, the second subpixel 112, the third subpixel 113, and the fourth subpixel 114, in order to reduce the number of spacers in the display substrate and reduce color casts in different viewing angles. For example, in this case, a spacer pair may be provided between the pixel groups 01. For example, forming three spacer pairs around each pixel group 01 can facilitate support of a mask when fabricating an emissive layer.

[0061] 2B illustrates a display substrate according to at least one embodiment of the present disclosure, in which the first spacer 0101 and the second spacer 0102 of the spacer pair 01012 are located on the same side of the third subpixel 113.

[0062] 2C illustrates a display substrate according to at least one embodiment of the present disclosure. The display substrate includes two types of spacer pairs 01012. One type of spacer pair 01012 is located on the same side (e.g., left side) of the third subpixel 113 in the first pixel group 011. The other type of spacer pair 01012 is located on the same side (e.g., right side) of the second subpixel 112 in the second pixel group 012.

[0063] 2D illustrates a display substrate according to at least one embodiment of the present disclosure, including a first spacer 0101 and a third spacer 0103. The third spacer 0103 may be disposed between two insensitive colors of different pixel groups 01, for example, between the second subpixel 112 and the third subpixel 113.

[0064] In the following, for ease of explanation of the pixel array structure, the spacers on the display substrate will be omitted from the explanation of the pixel array structure. In the embodiments of the present disclosure, the first spacer 0101, the second spacer 0102, the third spacer 0103, etc. may be disposed in the pixel array structure described below.

[0065] As shown in FIG. 2E, at least one embodiment of the present disclosure provides a display substrate, whose pixel arrangement structure includes a plurality of pixel groups 01. Each pixel group 01 includes a first subpixel 111, a second subpixel 112, a third subpixel 113, and a fourth subpixel 114. A first line segment LS1 connects the center C2 of the second subpixel 112 to the center C3 of the third subpixel 113. The first subpixel 111 and the fourth subpixel 114 are located between the second subpixel 112 and the third subpixel 113, respectively, on either side of the first line segment LS1. For example, a second line segment LS2 connects the center C1 of the first subpixel 111 to the center C4 of the fourth subpixel 114. For example, to achieve a good effect of closely arranging the pixels, the ratio of the lengths of the second line segment LS2 and the first line segment LS1 is 3 / 4 or less.

[0066] In a display substrate according to at least one embodiment of the present disclosure, the pixel arrangement structure of the display substrate shortens the distance between the first subpixel and the fourth subpixel in the same pixel group, thereby enabling the pixels to be arranged more closely, reducing the risk of color mixing, improving color bleeding, and improving visual graininess. On the other hand, the spacing between subpixels can be increased to facilitate manufacturing. Alternatively, the tightness of the pixel arrangement and the spacing between subpixels can be simultaneously considered and balanced, allowing the pixel arrangement to be tightly arranged while increasing the spacing between subpixels (the spacing between pixel-defining layers) to a certain extent, thereby simultaneously achieving the effects of reducing the risk of color mixing, improving color bleeding, improving visual graininess, and increasing the spacing between subpixels. For example, the shape of each subpixel provided in the embodiments of the present disclosure may be defined by a pixel-defining layer, but is not limited thereto. For example, each subpixel in the drawings is an actual light-emitting area. The specific shape of each subpixel can be determined depending on the manufacturing process. For example, the actual light-emitting area may be determined by the shape of at least one of the electrodes, the light-emitting layer, and the pixel-defining layer.

[0067] For example, when this pixel array structure is used in an OLED display substrate and the first subpixel and the fourth subpixel have the same color, the light-emitting layer patterns of the first subpixel and the fourth subpixel in the same pixel group may be formed by evaporation through the same opening in the mask.

[0068] For example, the first subpixel 111 and the fourth subpixel 114 may be subpixels of colors to which the human eye is sensitive, such as green, yellow, or white. For example, the areas of the first subpixel 111 and the fourth subpixel 114 are smaller than those of the second subpixel 112 and the third subpixel 113. For example, the area of ​​the first subpixel 111 is smaller than that of the second subpixel 112 and / or the area of ​​the first subpixel 111 is smaller than that of the third subpixel 113. Similarly, the area of ​​the fourth subpixel 114 can refer to the above description of the area of ​​the first subpixel 111. That is, the area of ​​the fourth subpixel 114 is smaller than that of the second subpixel 112 and / or the area of ​​the fourth subpixel 114 is smaller than that of the third subpixel 113.

[0069] According to a display substrate according to at least one embodiment of the present disclosure, the pixel array structure can improve the distribution uniformity of the sensitive color subpixels by adjusting the spacing of the sensitive color subpixels at the visual position, thereby increasing the visual resolution of the pixel array structure and improving the display quality.

[0070] The second subpixel 112 and the third subpixel 113 may be subpixels of a color to which the human eye is insensitive. For example, one of the second subpixel 112 and the third subpixel 113 may be a red subpixel and the other may be a blue subpixel, but is not limited to this. In the embodiment of the present disclosure, the second subpixel 112 is a red subpixel and the third subpixel 113 is a blue subpixel will be described as an example. However, if the pixel array structure uses a red, green, and blue (RGB) mode, the color to which the human eye is sensitive may be green.

[0071] 2E, the first line segment LS1 extends in a first direction X, and the second line segment LS2 extends in a second direction Y. For example, the first direction X is perpendicular to the second direction Y. For example, in each pixel group 01, the first subpixel 111 and the fourth subpixel 114 are arranged with the first direction X as an axis of symmetry, thereby making the pixel structure more uniformly arranged. For example, the first subpixel 111 is arranged uniformly with respect to the second subpixel 112 and the third subpixel 113 to maintain consistency, thereby making the pixel structure more uniformly arranged.

[0072] As shown in FIG. 2E, in a display substrate according to one or more embodiments of the present disclosure, the second line segment LS2 is perpendicular to the first line segment LS1 in its pixel array structure, thereby providing a more uniform pixel array. For example, if the second line segment LS2 is located on the perpendicular bisector of the first line segment LS1, the widths of the subpixels of each color in the first direction X may be, but are not limited to, the same. This results in a more uniform pixel array distribution, higher image display quality, and improved graininess at low PPI.

[0073] As shown in FIG. 2E, for ease of explanation, multiple square dotted frames are shown, each with a length of 1 / 2L, and four dotted frames can form a square with a side length of L. The dark rectangular dotted frame in FIG. 2E is a pixel group 01. The pixel group 01 may be the smallest repeating unit of the pixel array structure. For example, the pixel array structure can be obtained by copying the smallest repeating unit by shifting it in parallel. For example, the smallest repeating unit does not include any subunits that can be arranged to form a pixel structure by shifting it horizontally and repeating it. For example, as shown in FIG. 2, the dark rectangular dotted frame has a length of 2L and a width of L.

[0074] 2E, the first line segment SL1 is perpendicular to the second line segment SL2 and bisects each other perpendicularly. The first line segment SL1 bisects the second line segment SL2 perpendicularly. The second line segment SL2 also bisects the first line segment SL1 perpendicularly. For example, in pixel group 01, the largest area enclosed by the connecting lines connecting the centers of the first subpixel 111, the second subpixel 112, the fourth subpixel 114, and the third subpixel 113 is a diamond, and the first line segment SL1 and the second line segment SL2 are diagonals of the diamond.

[0075] As shown in FIG. 2E, in pixel group 01, the distance C1 between the center C4 of the first subpixel 111 and the center C4 of the fourth subpixel 114 may be greater than ½L, for example, ranging from ½L to L. For example, the first subpixel 111 and the fourth subpixel may be subpixels of the same color. When the first subpixel 111 and the fourth subpixel are both subpixels of the same color, such as the first subpixel 111, this distance setting avoids the situation where adjacent first subpixels are too close to each other and are difficult for the human eye to distinguish, resulting in visual merging and graininess. Therefore, this pixel array structure improves the distribution uniformity of the first subpixels, thereby increasing the visual resolution and further improving display quality.

[0076] 2E, the distance between the center C3 of the third subpixel 113 and the center C2 of the second subpixel 112 may be 4 / 3L. To make the ratio of the lengths of the second line segment LS2 and the first line segment LS1 equal to or less than 3 / 4, the distance between the third subpixel 113 and the second subpixel 112 in the same pixel group can be increased and / or the distance between the first subpixel 111 and the fourth subpixel 114 can be decreased, under conditions permitted by the process.

[0077] As shown in FIG. 2E, according to a display substrate according to one or more embodiments of the present disclosure, the ratio of the length of the second line segment LS2 to the length of the first line segment LS1 may be 3 / 8 or more to obtain a closely arranged pixel structure.

[0078] 2A, as shown in FIG. 2A, at least one of the first spacer 0101 and the second spacer 0102 does not overlap with the central connecting line between the first subpixel 111 and the third subpixel 113. For example, at least one of the first spacer 0101 and the second spacer 0102 does not overlap with the central connecting line between the blue subpixel and the green subpixel.

[0079] For example, to reduce color cast at different viewing angles, the orthogonal projection of the first spacer 0101 in a straight line along the first direction does not overlap or partially overlaps with the orthogonal projection of at least one of the second subpixel 112 and the third subpixel 113 in a straight line along the first direction.

[0080] For example, the ratio of the total number of the first spacers 0101 and the second spacers 0102 to the number of subpixels is 0.3 to 1. For example, the subpixels include a first subpixel 111, a second subpixel 112, a third subpixel 113, and a fourth subpixel 114. For example, in the same pixel group, the ratio of the total number of the first spacers 0101 and the second spacers 0102 to the number of subpixels is 0.3 to 1.

[0081] The above describes designing the position of the spacer to prevent the problem of color cast due to angle. However, the embodiments of the present disclosure also provide another solution for the spacer. For example, a transparent spacer can be used to prevent color cast due to angle. The position of the transparent spacer is not limited to the above-mentioned position. For example, instead of a polyimide material with low light transmittance, a material with high light transmittance, even completely transparent, and meeting the requirements of other alternative materials can be used for the transparent spacer. In this case, regardless of the angle from which the screen is viewed, the material used has high light transmittance and transmits light of different wavelengths without selectivity, so that red and blue light are not blocked by the spacer and can be normally emitted. This normal light emission is not related to the viewing angle, which to some extent alleviates the problems of color cast due to angle and asymmetry of the left and right fields of view on a white screen.

[0082] An alternative material that can be used for the spacer is silicone. Silicone films have excellent heat resistance, low-temperature flexibility, high dielectric constant, and insulating properties. Silicone films, such as polymer films made from dimethylsiloxane (PDMS), are colorless and completely optically transparent. Even when their thickness is in the millimeter range, they can achieve very high light transmittance, even reaching 90% or more, thereby providing the spacer with good transparency within the visible light range. The silicone material N-(trimethoxysilylpropyl)-4-azido-2,3,5,6-tetrafluorobenzamide (PFPA-silane) is used as an example. This silicone material has high light transmittance (close to 80%) and little difference in light transmittance at different wavelengths.

[0083] The spacer material can also be a new type of modified, colorless, and transparent polyimide material. In addition to its many excellent properties, polyimide itself has high light transmittance across the entire visible light spectrum due to modification, making it suitable for use as a transparent spacer material. For example, a polyimide / silica PI / SiO2 composite film can be used. After modification, the PI / SiO2 composite film has significantly higher light transmittance than pure polyimide, and has almost no wavelength selectivity within the visible light range, resulting in nearly uniform light transmittance at each wavelength. Both high light transmittance and no wavelength selectivity in light transmittance are advantageous for reducing color cast at different angles.

[0084] 3A shows a pixel array structure with the dashed lines shown in FIG. 2E removed. The dashed lines, centers, etc. shown in the embodiments of the present disclosure are imaginary lines or imaginary centers shown for ease of explanation. For example, the center may be, but is not limited to, the center of gravity, the intersection of the perpendicular bisectors of the opposite sides, etc.

[0085] 3B illustrates a display substrate according to one or more embodiments of the present disclosure. In the same pixel group 01, the first subpixel 111 and the fourth subpixel 114 both adopt the same color, such as the first subpixel 111. Because subpixels of the same color do not have color mixing problems, the light-emitting layer patterns of the first subpixel 111 and the fourth subpixel 114 in the same pixel group 01 may be deposited through the same opening in the mask, thereby facilitating mask netting, reducing the netting pressure, and improving the netting quality.

[0086] As shown in Figure 3B, because the first sub-pixels 111 in the same row have a low slope, when the first sub-pixels 111 in the same row display a line together (dense dotted line in Figure 3B), the low slope and small variation range of the first sub-pixels in adjacent pixel groups can avoid the situation where the line interdigitates with the line displayed in the adjacent row due to a large variation range, making it difficult for the human eye to distinguish the two lines, and the pixel array structure can thereby improve the visual resolution.

[0087] 3C illustrates a display substrate according to one or more embodiments of the present disclosure. As illustrated in FIG. 3C, in each pixel group 01, the first subpixel 111 and the fourth subpixel 114 are subpixels of the same color. For example, two types of pixel groups may be included, where the paired subpixels of the same color in one type of pixel group are the first subpixels (e.g., green subpixels) and the paired subpixels of the same color in the other type of pixel group are the fourth subpixels (e.g., white subpixels or yellow subpixels). The colors of the two subpixels paired between the second and third subpixels in a diagonally adjacent pixel group in each pixel group are different from the colors of the subpixels paired between the second and third subpixels in the pixel group.

[0088] 4 illustrates a display substrate according to one or more embodiments of the present disclosure. As shown in FIG. 4, a first line segment LS1 extends in a first direction X. The length D1 of a central connecting line LS3 between adjacent second and third subpixels 112 and 113 in two adjacent pixel groups O1 in the first direction X is smaller than the length of the first line segment LS1, thereby enabling pixels to be closely arranged. While the length of the first line segment LS1 in FIG. 4 is 4 / 3L, this is not limiting. For example, the length of the first line segment LS1 may range from 11 / 9L to 13 / 9L.

[0089] For example, to arrange pixels as closely as possible, if permitted by process conditions, the ratio of the length D1 of the center connecting line LS3 between the centers of the second subpixel 112 and the third subpixel 113 adjacent to each other in two pixel groups 01 adjacent in the first direction to the first line segment LS1 is 1 / 2 or less. While the example of FIG. 4 illustrates the case where the length of the distance D1 is 2 / 3L, this is not limiting. For example, the length of the distance D1 may be in the range of 5 / 9L to 7 / 9L.

[0090] 4 , in a display substrate according to one or more embodiments of the present disclosure, the pixel arrangement structure includes a plurality of pixel groups 01 arranged in an array, including a plurality of rows and a plurality of columns, such as a plurality of first pixel groups 011 in odd-numbered rows and a plurality of second pixel groups 012 in even-numbered rows. For example, the pixel groups in the even-numbered rows and the pixel groups in the odd-numbered rows are staggered. The second line segment LS2 may extend in the second direction Y. For example, to closely arrange the pixels in the column direction, the length D2 of the central connecting line L14 between the first sub-pixel 111 and the fourth sub-pixel 114 in two adjacent pixel groups 01 in the second direction Y in adjacent odd-numbered rows or adjacent even-numbered rows is greater than the length of the second line segment LS2. For example, in adjacent odd rows or adjacent even rows, the ratio of the length D2 of the central connecting line L14 between the first subpixel 111 and the fourth subpixel 114 in two adjacent pixel groups 01 in the second direction Y to the length of the second line segment LS2 is greater than or equal to 1 and less than or equal to 3.

[0091] For example, in adjacent odd rows or adjacent even rows, the length D2 of the central connecting line L14 between adjacent first subpixel 111 and fourth subpixel 114 in two adjacent pixel groups 01 in the second direction Y is greater than the length of the second line segment LS2.

[0092] This allows for the formation of a pixel structure in which six pixel groups are closely arranged around one pixel group. The pixel groups in odd-numbered rows and the pixel groups in even-numbered rows are staggered. For example, the pixel groups are staggered in the first direction X by half the length of the pixel groups in the first direction X, e.g., but not limited to, L. For example, in adjacent odd-numbered rows or adjacent even-numbered rows, the ratio of the length D2 of the central connecting line between the first sub-pixel 111 and the fourth sub-pixel 114 in two pixel groups 01 adjacent in the second direction Y to the length LS2 is greater than or equal to 1 and less than or equal to 3.

[0093] 4 , in a display substrate according to one or more embodiments of the present disclosure, in its pixel array structure, an extension of the second line segment LS2 of each pixel group 01 passes through the midpoint C0 of the center connecting line LSC of two pixel groups 01 adjacent to the pixel group 01 in the second direction Y and in the same row. The center of each pixel group 01 is C1, and the connecting line between the centers C1 of two adjacent pixel groups 01 is the center connecting line LSC. For example, the center C1 of a pixel group 01 may be the intersection of the first line segment LS1 and the second line segment LS2.

[0094] For example, an extension of the second line segment LS2 of each first pixel group 011 passes through the center C5 of the central connecting line LS3 between the adjacent third sub-pixel 113 and second sub-pixel 112 of two second pixel groups 012 that are adjacent to the first pixel group 011 and in the same row. For example, the center C5 and the center C0 may be the same point.

[0095] 4 , in a display substrate according to one or more embodiments of the present disclosure, an intersection IP1 between a central connecting line LS4 of two third subpixels 113 in two adjacent pixel groups O1 (two adjacent first pixel groups O11 or two adjacent second pixel groups O12) arranged in the second direction Y in adjacent odd-numbered rows or adjacent even-numbered rows and a first line segment LS1 in the pixel group O1 located between the two third subpixels 113 is located between a center IP0 of the first line segment LS1 and a center C2 of the second subpixel 112. For example, the center IP0 of the first line segment LS1 may be the center C1 of the pixel group O1. For example, the intersection IP1 is located at the midpoint of the connecting line between the center IP0 of the first line segment LS1 and the center C2 of the second subpixel 112.

[0096] For example, in adjacent odd-numbered rows, the intersection IP1 between the central connecting line LS4 of two third subpixels 113 of adjacent first pixel groups 011 in the same column and the first line segment LS1 of the second pixel group 012 adjacent to the third subpixels 113 is located between the intersection IP0 of the first line segment LS1 and the second line segment LS2 of the second pixel group 012 and the center C2 of the second subpixel 112. The third subpixel 113 in the above description can also be replaced with the second subpixel 112.

[0097] For example, in adjacent odd rows or adjacent even rows, the intersection of the center connecting line between two second subpixels 112 in two adjacent pixel groups 01 (two adjacent first pixel groups 011 or two adjacent second pixel groups 012) arranged in the second direction Y and a first line segment LS1 in the pixel group 01 located between the two second subpixels 112 is located between the center IP0 of the first line segment LS1 and the center C3 of the third subpixel 113. For example, the intersection is located at the midpoint of the connecting line between the center IP0 of the first line segment LS1 and the center C3 of the third subpixel 113.

[0098] For example, a first spacer 0101 is placed between adjacent groups of pixels in different rows, and a second spacer 0102 is placed between adjacent groups of pixels in different rows.

[0099] As shown in FIG. 4 , according to the pixel arrangement structure according to one or more embodiments of the present disclosure, in the same pixel group, the closest distance between the second subpixel 112 and the first subpixel 111 is L1, the closest distance between the second subpixel 112 and the fourth subpixel 114 is L2, the closest distance between the third subpixel 113 and the first subpixel 111 is L3, and the closest distance between the third subpixel 113 and the fourth subpixel 114 is L4, where L1=L2=L3=L4.

[0100] As shown in FIG. 4, according to the pixel arrangement structure according to one or more embodiments of the present disclosure, the closest distances between the first subpixel 111 or the fourth subpixel 114 and the second subpixel 112 and the third subpixel 113 in the pixel group adjacent to them in the second direction but not located in the same row are L5 and L6, respectively, where L5=L6.

[0101] For example, in one embodiment, L1=L2=L3=L4=L5=L6.

[0102] For example, for L1, L2, L3, L4, L5, and L6, refer to the notes regarding the minimum process distance d in Figures 7A and 7B. Each closest distance is the minimum distance between two subpixels. For example, in actual manufacturing, L1, L2, L3, L4, L5, and L6 can be made as close as possible to the minimum process distance d. For example, the closest distance is the distance between the two closest points on the outer edges of the two subpixels.

[0103] As shown in FIG. 4 , according to the pixel array structure according to one or more embodiments of the present disclosure, in adjacent subpixels, the opposite sides are substantially parallel or the included angle is less than 45°, and the adjacent subpixels include any adjacent two of the first subpixel 111, the second subpixel 112, the third subpixel 113, and the fourth subpixel 114.

[0104] As shown in FIG. 5A , in a display substrate according to one or more embodiments of the present disclosure, the pixel arrangement structure includes first subpixels 111 and fourth subpixels 114 each having an elongated shape, and the extension direction A1 of the first subpixels 111 does not overlap with the extension direction A2 of the fourth subpixels 114. For example, the extension direction A1 of the first subpixels 111 intersects with or forms an included angle with the extension direction A2 of the fourth subpixels 114. For example, in each pixel group, the first subpixels 111 and the fourth subpixels 114 are arranged with the first direction X as the axis of symmetry and are tilted at a certain angle. For example, the included angle between the tilt angle and the first direction X ranges from 30° to 50°, and may be, for example, 45°, but is not limited thereto. For example, the extension direction A1 of the first subpixels 111 may be, but is not limited to, the long axis direction of the first subpixels 111. For example, the extension direction A2 of the fourth subpixel 114 may be the long axis direction of the fourth subpixel 114, but is not limited to this.

[0105] 5A , according to a pixel arrangement structure according to one or more embodiments of the present disclosure, in each pixel group 01, the first sub-pixel 111 and the fourth sub-pixel 114 are arranged symmetrically with respect to the first line segment LS1. For example, in each pixel group 01, the first sub-pixel 111 and the fourth sub-pixel 114 are arranged asymmetrically with respect to the second line segment LS2.

[0106] For example, the second sub-pixel 112 and the third sub-pixel 113 are arranged symmetrically with respect to the second line segment LS2, but this is not limiting.

[0107] For example, in the embodiments of the present disclosure, elongated means that the length in one direction is greater than the length in another direction, or the size in one direction is greater than the size in another direction. The elongated shape is not limited to a rectangle, but may be other shapes, such as a long hexagon, a long oval, a trapezoid, etc. In the embodiments of the present disclosure, the shape of each subpixel is not limited to a regular shape, but may be an irregular shape.

[0108] For example, the included angle between the extension direction A1 of the first subpixel 111 and the extension direction A2 of the fourth subpixel 114 is 70° to 100°, or may be 80° to 95°, or even 90° (a right angle), thereby allowing the first subpixel 111 and the fourth subpixel 114 to have a larger area, thereby increasing the light-emitting area and facilitating netting during the manufacture of a mask for manufacturing an emitting layer pattern. For example, when the angle is a right angle, a deviation of several degrees above or below the 90° angle is permitted. For example, the angle may be 5° above or below the 90° angle.

[0109] FIG. 5B shows a display substrate according to one or more embodiments of the present disclosure, in which the pixel array structure includes a right angle between the extension direction A1 of the first subpixel 111 and the extension direction A2 of the fourth subpixel 114, and in the same pixel group 01, the first subpixel 111 and the fourth subpixel 114 are subpixels of the same color.

[0110] FIG. 6 illustrates a display substrate according to one or more embodiments of the present disclosure. As shown in FIG. 6, the second subpixel 112 and the third subpixel 113 may have a diamond or approximately diamond shape. Examples of approximately diamond shapes include, but are not limited to, rounded diamonds and chamfered diamonds. A diamond or approximately diamond shape of the subpixels is more advantageous for closely arranging pixels. For example, the first subpixel 111 may be symmetrically surrounded by the third subpixel 113 and the second subpixel 112, with both long sides of the first subpixel 111 facing the second subpixel 112 and both short sides facing the third subpixel 113, thereby maximizing the uniformity of the pixel arrangement. This more uniform arrangement of the first subpixels 111 reduces color bleeding to a certain extent, which is beneficial for achieving a high PPI and maximizing the pixel aperture ratio.

[0111] The shape of each sub-pixel is not limited to the above and can be adjusted as needed. Maximizing the area is the main principle when determining the shape of the sub-pixel.

[0112] To avoid color mixing, the spacing between subpixels of different colors must be greater than the minimum process spacing d of the patterning process. Furthermore, considering the symmetry requirements of certain processes, such as FMM netting, where symmetry of the hole pattern and distribution is desirable, the shapes of the first and fourth subpixels may each be symmetrical pentagons with right-angled base angles (see Figure 2E). As can be seen, the spacing between the second and third subpixels between adjacent pixel groups of symmetrically shaped subpixels is significantly greater than the spacing between other subpixels of different colors (the minimum process spacing d), meaning there is available area in the design. If other processes (such as CF) that are not sensitive to symmetry are permitted or adopted for FMM netting technology, asymmetric subpixel shapes can be adopted to maximize the subpixel area.

[0113] 7A and 7B show pixel arrangement structures on a display substrate according to one or more embodiments of the present disclosure. As shown in FIG. 7A and 7B, under the condition that asymmetric subpixel shapes are permitted, the shapes of the second subpixel 112 and the third subpixel 113 may be right-angled trapezoids or right-angled trapezoids with truncated acute angles, thereby maximizing the area, depending on the minimum process distance d of the patterning process.

[0114] 7A , since the shapes of the second subpixel 112 and the third subpixel 113 are both right-angled trapezoids, compared to when the shapes of the second subpixel 112 and the third subpixel 113 are both hexagonal (a hexagon formed by combining two symmetrical pentagons with right-angled base angles), the acute corners 190 of the second subpixel 112 and the third subpixel 113 can further increase the areas of the second subpixel 112 and the third subpixel 113, thereby further improving the space utilization rate within the pixel group. This pixel arrangement structure can improve the space utilization rate within the pixel group.

[0115] 7B, the second subpixel 112 and the third subpixel 113 are both shaped as an isosceles trapezoid with acute angles truncated, so that when the process precision is constant, that is, when the distances between the first subpixel 111 and the second subpixel 112 and the third subpixel 113 are constant, the areas of the second subpixel 112 and the third subpixel 113 are increased, thereby improving the space utilization rate within the pixel group.

[0116] According to the pixel arrangement structure of the display substrate in accordance with one or more embodiments of the present disclosure, the shapes of the second subpixel 112 and the third subpixel 113 include at least one of an isosceles trapezoid, a hexagon, and a rhombus, and the second subpixel 112 includes at least one of a pentagon, a rectangle, and an approximately rectangular shape, for example, but not limited to, a rectangle with rounded corners.

[0117] 8 illustrates a display substrate according to one or more embodiments of the present disclosure. As shown in FIG. 8, in a pixel group in the same row, the third subpixel 113 and the first subpixel 111 may be driven by a first driving line DL1, and the second subpixel 112 and the fourth subpixel 114 may be driven by a second driving line DL2. The first driving line DL1 extends along the E1 direction, and the second driving line DL2 extends along the E1 direction. For example, the E1 direction is parallel to the first direction X.

[0118] 8, the first and fourth subpixels 111 and 114 in the pixel group in odd-numbered columns receive data signals via the first data line DT1, and the second and third subpixels 112 and 113 located between two adjacent first data lines DT1 receive data signals via the second data line DT2. For example, the data signals may include a voltage and / or a current. The first data line DT1 extends along the E2 direction, and the second data line DT2 also extends along the E2 direction, which is parallel to the second direction Y.

[0119] 9 is a schematic diagram of a display substrate, in which each sub-pixel has a different width in the first direction X. Because each sub-pixel has a different width, color casts tend to occur when viewed from different viewing angles.

[0120] 10 shows a schematic diagram of a display substrate according to one or more embodiments of the present disclosure. Along a first direction X, the first subpixel 111, the second subpixel 112, the third subpixel 113, and the fourth subpixel 114 have the same width in the first direction X, thereby reducing color cast when viewed from different viewing angles.

[0121] For example, one pixel unit group includes two pixel units, e.g., the first subpixel 111 and the second subpixel 112 form one pixel unit, and the third subpixel 113 and the fourth subpixel 114 form another pixel unit. Each pixel unit can share the adjacent third subpixel 111 or fourth subpixel 114 to achieve full-color display. Display is achieved by sharing subpixels. The division method of the pixel units is not limited to the above description. The pixel units here may be referred to as virtual pixels. The division of the virtual pixels is related to the driving method. The specific division method of the virtual pixels can be determined depending on the actual driving method, and the present disclosure does not particularly limit this.

[0122] 11 illustrates a schematic diagram of a display substrate according to one or more embodiments of the present disclosure. As shown in FIG. 11, the display substrate includes a third spacer 0103 located between the first subpixel 111 and the fourth subpixel 114 in the pixel group 01. For example, but not limited to, both the first subpixel 111 and the fourth subpixel 114 may be green subpixels.

[0123] In the side view, the light emitted from each subpixel is not blocked by the third spacer 0103, thereby improving to some extent the phenomenon of asymmetric color cast in the left and right views when a white screen is displayed, thereby improving image quality and display effect. The installation of the third spacer 0103 basically solves the problem of inconsistent blocking of the light emitted from each subpixel in the left and right direction, and further significantly eliminates the phenomenon of asymmetric color cast due to left and right angles. In the vertical direction, since the third spacer blocks only the first and fourth subpixels, even if color cast due to angle occurs due to blocking the first and fourth subpixels, the blocking of the first and fourth subpixels is consistent in both the up and down directions when the angle is the same, so the phenomenon of asymmetric color cast due to angle does not exist. For example, by adjusting the size and thickness of the third spacer 0103, the degree of blocking of the first subpixel 111 and the fourth subpixel 114 can be adjusted, and the degree of color cast due to angle in the vertical direction can also be adjusted.

[0124] As shown in FIG. 11, the extending direction E03 of the third spacer 0103 is perpendicular to the connecting line CL0 between the center C1 of the first sub-pixel 111 and the center C4 of the fourth sub-pixel 114, but is not limited to this.

[0125] As shown in FIG. 11, the length of the third spacer 0103 in the first direction X is greater than the length of at least one of the first subpixel 111 and the fourth subpixel 114 in the first direction X.

[0126] 11, the first subpixel 111 and the fourth subpixel 114 are both pentagonal in shape, each having a pair of parallel opposite sides and a vertical side, the vertical side being perpendicular to the pair of parallel opposite sides, and the third spacer 0103 is parallel to the vertical side of the pentagon.

[0127] FIG. 12 is a cross-sectional view of a display substrate according to one embodiment of the present disclosure. As shown in FIG. 12, the structure includes a base substrate 1001, a buffer layer 002, a first gate insulating layer 003, a second gate insulating layer 004, an interlayer dielectric layer 005, a planarization layer 006, and a pixel defining layer 007, which are sequentially disposed on the base substrate 1001. As can be seen from FIG. 12, below the subpixel is a thin-film transistor structure including a gate 302, an active layer 301, and a drain 303. The thin-film transistor may be a thin-film transistor in a pixel driving circuit. The connection relationship between the thin-film transistor and other components may be configured according to the specific pixel circuit configuration, and a detailed description thereof will be omitted here. Furthermore, a signal line 304 may be included in the same layer as the drain 303. The signal line 304 may be used as a signal line with a specific function, such as a data line or a gate line, depending on the pixel circuit configuration. As can be seen from FIG. 12, the pixel defining layer 007 may include an opening for defining the subpixel. The anode 403 of the sub-pixel and the light-emitting layer 503 of the third sub-pixel are located in the opening of the pixel defining layer 007. Note that the structure of the display substrate is not limited to that shown in FIG.

[0128] For example, the anode 403 and the light-emitting layer 503 are in contact with each other, which can drive the light-emitting layer to emit light. Therefore, the contacting portion of the anode 403 and the light-emitting layer 503 is the light-emitting active portion of the subpixel. Here, the anode 403 is used as a pixel electrode, which can apply different data voltages to different subpixels. However, in embodiments of the present disclosure, the electrode used as the pixel electrode of the subpixel is not limited to the anode. The cathode of a light-emitting diode may also be used as the pixel electrode. Therefore, in embodiments of the present disclosure, the shape of the subpixel may be the shape of the portion where the pixel electrode and the light-emitting layer are in contact with each other. For example, for each subpixel, the area of ​​the pixel electrode may be slightly larger than the area of ​​the light-emitting layer, or the area of ​​the light-emitting layer may be slightly larger than the area of ​​the pixel electrode. Embodiments of the present disclosure are not particularly limited thereto. For example, the light-emitting layer here may include an electroluminescent layer and other functional layers, such as a hole injection layer, a hole transport layer, an electron injection layer, and an electron transport layer, located on both sides of the electroluminescent layer. In some embodiments, the shape of the pixel may also be defined by a pixel-defining layer. For example, a lower electrode (e.g., an anode) of a light-emitting diode may be disposed below a pixel-defining layer, the pixel-defining layer having an opening for defining a pixel, the opening exposing a portion of the lower electrode, and when a light-emitting layer is formed in the opening of the pixel-defining layer, the light-emitting layer contacts the lower electrode, thereby enabling the light-emitting layer to be driven to emit light in this portion. Thus, in this case, the opening of the pixel-defining layer defines the shape of a sub-pixel.

[0129] For example, a pixel circuit includes at least one transistor having a gate, an active layer, and a source and a drain. In one example, a signal line is electrically connected to the source or drain of a corresponding transistor through a via that penetrates an insulating layer below it. In one example, the active layer of a transistor is formed of a polysilicon layer, and the polysilicon layer is conductive on both sides of a channel region of the active layer to form a source and a drain. For example, the signal line is electrically connected to the conductive polysilicon source or drain through a via. For example, the transistor is a top-gate transistor, and a via for electrically connecting the signal line to the source or drain of the corresponding transistor penetrates a gate metal layer and a data metal layer, and part of the metal patterns of the gate metal layer and the data metal layer may be used as a relay connector for the electrical connection through the via, although embodiments of the present disclosure are not limited thereto.

[0130] For example, the shapes of the various subpixels described in the embodiments of the present disclosure are all approximate, and it is not possible to ensure that the edges of the subpixels are strictly straight and that the corners are strictly angular when forming the light-emitting layers or various electrode layers. For example, the light-emitting layers may be formed in a deposition process using a mask, so the corners may be rounded. In some cases, metal etching has a draft angle, and therefore, when forming the light-emitting layers of the subpixels in the deposition process, one corner of the light-emitting layer may be removed. For example, in the embodiments of the present disclosure, the shapes of the subpixels are all rounded.

[0131] For example, as shown in FIG. 2A , in one pixel group, the first subpixel 111 and the second subpixel 112 are subpixels of different colors and form pixel P, while the third subpixel 113 and the fourth subpixel 114 are subpixels of different colors and form pixel P. When displaying an image, the subpixels of other surrounding pixels must be used to display the image. For example, the first subpixel 111 and the fourth subpixel 114 are green subpixels, the second subpixel 112 is a red subpixel, and the third subpixel 113 is a blue subpixel. For example, the red and green subpixels form one pixel, and the blue and green subpixels form another pixel. In this case, pixel P includes only two subpixels and requires the subpixels of other surrounding pixels to display the image. Therefore, pixel P may be referred to as a virtual pixel. At high resolutions, the green subpixel plays a crucial role in determining the perceived luminance center of each pixel. For example, the luminance center of a pixel formed by a red subpixel and a green subpixel is located between the red subpixel and the green subpixel and is closer to the green subpixel, and the luminance center of a pixel formed by a blue subpixel and a green subpixel is located between the blue subpixel and the green subpixel and is closer to the green subpixel.

[0132] For example, as shown in FIG. 2A , the second and third subpixels are all hexagonal in shape, with three pairs of opposite sides all parallel, and the first and fourth subpixels are all pentagonal in shape, with a pair of parallel opposite sides and one vertical side, where the vertical side is perpendicular to the pair of parallel opposite sides. The vertical sides of the first and fourth subpixels are adjacent to each other, and the pair of long parallel opposite sides of the second subpixel, the pair of long parallel opposite sides of the third subpixel, the pair of parallel opposite sides of the first subpixel, and the pair of parallel opposite sides of the fourth subpixel are parallel.

[0133] When designing a pixel array structure, subpixels are typically designed as regular shapes such as hexagons, pentagons, trapezoids, or other shapes. When designed, the centers of the subpixels may be the geometric centers of the regular shapes. However, in an actual manufacturing process, the shapes of the formed subpixels generally have a certain deviation from the designed regular shapes. For example, each corner of the regular shape may be rounded, and thus the subpixel shape may have a rounded corner pattern. The shapes of the actually manufactured subpixels may also have other variations from the designed shapes. For example, a subpixel designed as a hexagon may be approximately elliptical in actual manufacturing. Therefore, the centers of the subpixels may not be the exact geometric centers of the irregular shapes of the manufactured subpixels. In the embodiments of the present disclosure, the centers of the subpixels may have a certain deviation from the geometric centers of the subpixel shapes. The center of a subpixel is any point within the area enclosed by specific points on a ray from the geometric center of the subpixel to each point on the edge of the subpixel, the specific point on the ray being 1 / 3 of the length of the ray from the geometric center. This definition of the center of a subpixel can be applied to the center of a regular or irregularly shaped subpixel.

[0134] As described above, due to various manufacturing errors, the shape of an actually manufactured subpixel may deviate from the designed shape of the subpixel. Therefore, in the present disclosure, the positions of the subpixel centers and the relationship between the subpixel centers and the positions of other objects may have certain errors. For example, a connecting line between the subpixel centers or a line passing through the subpixel centers may pass through an area surrounded by the centers of the above-mentioned radial lines, as long as it satisfies other corresponding requirements (e.g., extension direction). For example, the center of a subpixel being on a certain line means that the line passes through an area surrounded by the centers of the above-mentioned radial lines.

[0135] In addition, although the shape of each subpixel in the drawings includes a strict corner formed by two line segments, in some embodiments, the shape of each subpixel may have rounded corners. That is, the corners of each subpixel are rounded based on the shapes of the various figures. For example, when an emitting layer is deposited using a mask, the corners of the emitting layer may naturally have rounded corners.

[0136] At least one embodiment of the present disclosure provides a display device including any of the above display substrates. Therefore, color cast at different viewing angles can be improved, and display quality can be enhanced. When a display panel having a pixel array structure according to an embodiment of the present disclosure is used in a display device, the resolution of the display device can be further enhanced, and a display device with true high resolution can be provided. Furthermore, the pixel array structure according to an embodiment of the present disclosure has relatively good symmetry, which can further improve the uniformity of pixel distribution and enhance the display effect of the display device.

[0137] For example, in some examples, the display device may be any product or component with a display function, such as a smartphone, a tablet computer, a television, a display, a laptop computer, a digital photo frame, or a navigator.

[0138] The following points will be explained. (1) The drawings of the embodiments of the present disclosure only show the structures related to the embodiments of the present disclosure, and other structures may refer to conventional designs. (2) Features in the same embodiment and different embodiments of the present disclosure may be combined with each other unless inconsistent.

[0139] The above are merely specific embodiments of the present disclosure, but do not limit the scope of protection of the present disclosure, and all modifications and substitutions that a person skilled in the art can easily make without departing from the technical scope of the present disclosure belong to the scope of protection of the present disclosure. Therefore, the scope of protection of the present disclosure should be in accordance with the scope of protection of the claims.

Claims

1. A display substrate comprising a plurality of first sub-pixels, a plurality of second sub-pixels, a plurality of third sub-pixels, and a plurality of fourth sub-pixels, the plurality of second sub-pixels and the plurality of third sub-pixels are arranged in a plurality of groups along a first direction, the plurality of first sub-pixels and the plurality of fourth sub-pixels are arranged in a plurality of groups along a second direction, the first direction intersecting the second direction; a distance between a center of the second sub-pixel and a center of the third sub-pixel adjacent to each other in the first direction includes at least a first distance and a second distance, and the first distance is smaller than the second distance; a distance between a center of the first sub-pixel and a center of the fourth sub-pixel adjacent to each other in the second direction includes at least a third distance and a fourth distance, and the third distance is smaller than the fourth distance; the plurality of second subpixels and the plurality of third subpixels are arranged in the first direction such that a distance between centers of two adjacent subpixels alternates between the first distance and the second distance, and the plurality of first subpixels and the plurality of fourth subpixels are arranged in the second direction such that a distance between centers of two adjacent subpixels alternates between the third distance and the fourth distance, a plurality of second subpixels and a plurality of third subpixels adjacent to each other in the second direction, orthogonal projections of the second subpixels and the third subpixels on a straight line extending along the first direction overlap, and the second subpixels and the third subpixels simultaneously overlap with an imaginary rectangle extending along the second direction; and a plurality of first subpixels and a plurality of fourth subpixels adjacent to each other in the first direction, orthogonal projections of the first subpixels and the fourth subpixels on a straight line extending along the second direction overlap.

2. The display substrate of claim 1 , wherein the second sub-pixel and the third sub-pixel have a shape of a rounded diamond or a chamfered diamond.

3. 2. The display substrate of claim 1, wherein the plurality of second sub-pixels and the plurality of third sub-pixels are arranged along the first direction and the second direction, and central connecting lines of the plurality of second sub-pixels and the plurality of third sub-pixels adjacent to each other in the first direction are substantially aligned, and central connecting lines of the plurality of second sub-pixels and the plurality of third sub-pixels adjacent to each other in the second direction are at least partially not aligned.

4. 2. The display substrate of claim 1, wherein the plurality of first sub-pixels and the plurality of fourth sub-pixels are arranged along the first direction and the second direction, and central connecting lines between the plurality of first sub-pixels and the plurality of fourth sub-pixels adjacent to each other in the second direction are substantially aligned, and central connecting lines between the plurality of first sub-pixels and the plurality of fourth sub-pixels adjacent to each other in the first direction are at least partially not aligned.

5. 2. The display substrate of claim 1, wherein, in a plurality of second sub-pixels and a plurality of third sub-pixels adjacent to each other in the second direction, central connecting lines of the plurality of second sub-pixels are positioned on a substantially straight line, and central connecting lines of the plurality of third sub-pixels are positioned on a substantially straight line.

6. a connecting line between the centers of one adjacent second subpixel and one adjacent third subpixel, the distance between which is a first distance in a first direction, intersects with a connecting line between the centers of one adjacent first subpixel and one adjacent fourth subpixel, the distance between which is a fourth distance in the second direction; 5. The display substrate of claim 1, wherein a connecting line between the centers of adjacent second and third subpixels, the distance between which is the second distance in the first direction, intersects with a connecting line between the centers of adjacent first and fourth subpixels, the distance between which is the third distance in the second direction.

7. 5. The display substrate of claim 1, wherein a center connecting line between the second subpixel and the third subpixel, whose distance in the first direction is the second distance, is substantially perpendicular to a center connecting line between the first subpixel and the fourth subpixel, whose distance in the second direction is the third distance, and a center connecting line between the second subpixel and the third subpixel, whose distance in the first direction is the first distance, is substantially perpendicular to a center connecting line between the first subpixel and the fourth subpixel, whose distance in the second direction is the fourth distance.

8. 5. The display substrate of claim 1, wherein a connecting line between two first subpixels and two fourth subpixels that surround and are adjacent to one second subpixel or one third subpixel is substantially trapezoidal.

9. 5. The display substrate of claim 1, wherein a connecting line between two second subpixels and two third subpixels that surround and are adjacent to one first subpixel or one fourth subpixel is substantially trapezoidal.

10. 9. The display substrate of claim 8, wherein at least one diagonal line of the trapezoid does not pass through the center of a middle subpixel located within the trapezoid, and the middle subpixel is a subpixel surrounded by four subpixels located at the four vertices of the trapezoid.

11. a distance between the center of the first subpixel and the centers of two adjacent second subpixels is not equal, or a distance between the center of the first subpixel and the centers of two adjacent third subpixels is not equal, 5. The display substrate of claim 1, wherein the distances between the center of the fourth subpixel and the centers of the two adjacent second subpixels are unequal, or the distances between the center of the fourth subpixel and the centers of the two adjacent third subpixels are unequal.

12. a distance between the center of the first subpixel and the center of two adjacent second subpixels is equal, a distance between the center of the first subpixel and the center of two adjacent third subpixels is equal, 5. The display substrate of claim 1, wherein a distance between a center of the fourth subpixel and a center of two adjacent second subpixels is equal, and a distance between a center of the fourth subpixel and a center of two adjacent third subpixels is equal.

13. 5. The display substrate of claim 1, wherein the shape of the first subpixel includes a rectangle with rounded corners, the shape of the fourth subpixel includes a rectangle with rounded corners, and two fourth subpixels adjacent to the same first subpixel in the second direction have longitudinal directions different from the longitudinal directions of the first subpixels.

14. The display substrate of claim 1 , wherein the shape of at least one of the second sub-pixel and the third sub-pixel includes at least one of a diamond, a rounded diamond, and a chamfered diamond.

15. The display substrate of claim 1 , wherein the first sub-pixel and the fourth sub-pixel emit light of the same color, and the second sub-pixel and the third sub-pixel emit light of different colors.

16. A display device comprising the display substrate according to claim 1 .

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