Display substrate and display device

Abstract

A display substrate and a display device. The display substrate includes a first sub-pixel, a second sub-pixel and a first spacer; a line connecting the center of the first sub-pixel and the center of the color sub-pixel is a center line, and the center line is not perpendicular to a first direction, and the first direction is at least one of a row direction or a column direction; the first spacer is arranged between the first sub-pixel and the second sub-pixel, and the extension direction of the first spacer between the first sub-pixel and the second sub-pixel is not perpendicular to the first direction. Thus, the display substrate can improve the color deviation of different viewing angles and enhance the display quality.

Description

[0001] This application is a divisional application of Chinese patent application No. 201810135948.6 filed on February 9, 2018. The contents disclosed in the above Chinese patent application are cited in full as part of this application. Technical Field

[0002] Embodiments of the present disclosure relate to a display substrate and a display device. Background Art

[0003] With the continuous development of display technology, people have higher and higher requirements for the resolution of display devices. Due to the advantages of high display quality, the application range of high-resolution display devices is also getting wider and wider. Generally, the resolution of a display device can be improved by reducing the size of pixels and reducing the spacing between pixels. However, the reduction of the size of pixels and the spacing between pixels also places higher and higher requirements on the precision of the manufacturing process, which will lead to an increase in the difficulty of the manufacturing process of the display device and the increase in the manufacturing cost.

[0004] On the other hand, sub-pixel rendering (SPR) technology can take advantage of the difference in the human eye's resolution of sub-pixels of different colors, change the conventional red, green, and blue sub-pixels that simply define a pixel, and share certain sub-pixels of color that are not sensitive to resolution between different pixels. By using a relatively small number of sub-pixels, it can simulate the same pixel resolution performance, thereby reducing the difficulty and cost of the production process.

[0005] In a display device, spacers are usually provided to play a supporting role. Summary of the invention

[0006] Embodiments of the present disclosure provide a display substrate and a display device to reduce color deviation at different viewing angles and improve display quality.

[0007] At least one embodiment of the present disclosure provides a display substrate, including: a first sub-pixel, a second sub-pixel, and a first spacer;

[0008] The line connecting the center of the first sub-pixel and the center of the second sub-pixel is a center line, the center line is not perpendicular to a first direction, and the first direction is at least one of a row direction or a column direction;

[0009] The first spacer is disposed between the first sub-pixel and the second sub-pixel, and an extending direction of the first spacer between the first sub-pixel and the second sub-pixel is not perpendicular to the first direction.

[0010] At least one embodiment of the present disclosure provides a display device, including the display substrate provided by at least one embodiment of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings of the embodiments will be briefly introduced below. Obviously, the drawings in the following description only relate to some embodiments of the present disclosure, but are not intended to limit the present disclosure.

[0012] Figure 1A is a schematic diagram of a display substrate;

[0013] Figure 1B is a cross-sectional schematic diagram of a display substrate;

[0014] Figure 1C A schematic diagram of viewing a display device at a certain viewing angle.

[0015] Figure 2A A schematic diagram of a display substrate provided in one embodiment of the present disclosure;

[0016] Figure 2B A schematic diagram of a display substrate provided in another embodiment of the present disclosure;

[0017] Figure 2C A schematic diagram of a display substrate provided in another embodiment of the present disclosure;

[0018] Figure 2D A schematic diagram of a display substrate provided in one embodiment of the present disclosure;

[0019] Figure 2E A schematic diagram of a pixel arrangement structure in a display substrate provided by an embodiment of the present disclosure;

[0020] Figure 3A A schematic diagram of a pixel arrangement structure in a display substrate provided by an embodiment of the present disclosure;

[0021] Figure 3B A schematic diagram of a pixel arrangement structure in a display substrate provided by another embodiment of the present disclosure;

[0022] Figure 3C A schematic diagram of a pixel arrangement structure in a display substrate provided by another embodiment of the present disclosure;

[0023] Figure 4 A schematic diagram of a pixel arrangement structure in a display substrate provided by an embodiment of the present disclosure;

[0024] Figure 5A A schematic diagram of a pixel arrangement structure in a display substrate provided by another embodiment of the present disclosure;

[0025] Figure 5B A schematic diagram of a pixel arrangement structure in a display substrate provided by another embodiment of the present disclosure;

[0026] Figure 6 A schematic diagram of a pixel arrangement structure in a display substrate provided by another embodiment of the present disclosure;

[0027] Fig. 7A A schematic diagram of a pixel arrangement structure in a display substrate provided by another embodiment of the present disclosure;

[0028] Figure 7B A schematic diagram of a pixel arrangement structure in a display substrate provided by another embodiment of the present disclosure;

[0029] Figure 8 A schematic diagram of a pixel arrangement structure, a driving line and a data line of a display substrate provided in another embodiment of the present disclosure;

[0030] Fig. 9 A schematic diagram of a display substrate is shown;

[0031] Fig.10 A schematic diagram of a display substrate provided by one or more embodiments of the present disclosure is shown. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the embodiments of the present disclosure clearer, the technical solution of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0033] Unless otherwise defined, the technical terms or scientific terms used in the present disclosure should be understood by people with ordinary skills in the field to which the present disclosure belongs. "First", "second" and similar words used in the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

[0034] Figure 1A A display substrate is shown in FIG. Figure 1AAs shown, the display substrate includes a pixel arrangement structure, which is a typical pentile arrangement. A minimum repeating unit includes two green sub-pixels 0111, a red sub-pixel 0112 and a blue sub-pixel 0113. The pixel arrangement is evenly distributed, and high PPI (Pixel Per Inch) display is easily achieved. In each row, the minimum repeating units are arranged along the first direction X, and spacers 010 are arranged between adjacent sub-pixels in the same minimum repeating unit and between different minimum repeating units. The spacers 010 extend along the second direction Y. The first direction X is perpendicular to the second direction Y.

[0035] Figure 1B A cross-sectional view of a display substrate is shown, which can be Figure 1A The cross-sectional view along the AB direction. Figure 1B As shown in FIG. 1 , a green sub-pixel 0111, a red sub-pixel 0112, a blue sub-pixel 0113 and a spacer 010 are arranged on a base substrate 101. When the display substrate is viewed at a certain angle, the spacer has different effects on the luminance of each sub-pixel, resulting in color deviation of the viewing angle. For example, along the first direction X, when the display substrate is viewed at different angles, the spacer 010 blocks the light of some sub-pixels from entering the human eye, thereby forming color deviation under different viewing angles. That is, from the first direction X to the second direction X, the spacer 010 blocks the light of some sub-pixels from entering the human eye, thereby forming color deviation under different viewing angles. Figure 1B When the left and right sides view the same picture, there is visual bias.

[0036] Figure 1C Schematic diagram of viewing a display device at a certain viewing angle is shown in FIG. Figure 1C Taking viewing from the right side of the display device as an example, since the spacer 010 blocks the light of some sub-pixels, when viewing the display device from the left side, the color of the same picture is different from that when viewing from the right side.

[0037] Figure 2A A display substrate provided according to at least one embodiment of the present disclosure is shown, and the display substrate includes: a first sub-pixel 111, a second sub-pixel 112, and a first spacer 0101. A line connecting the center C1 of the first sub-pixel 111 and the center C2 of the second sub-pixel 112 is a center line CL1, and the center line CL1 is not perpendicular to a first direction X, and the first direction X is at least one of a row direction or a column direction.

[0038] The first spacer 0101 is disposed between the first sub-pixel 111 and the second sub-pixel 112 , and an extending 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.

[0039] For example, the first spacer 0101 extends between the first sub-pixel 111 and the second sub-pixel 112, and the extension direction E01 of the first spacer 0101 is not perpendicular to the first direction X. In the embodiment of the present disclosure, the first direction X is taken as a row direction for example.

[0040] At least one embodiment of the present disclosure provides a display substrate in which the arrangement of spacers is adjusted. When the extension direction E01 of the first spacer 0101 is not perpendicular to the first direction X, the first spacer can reduce the shielding of the first sub-pixel 111, thereby reducing the color deviation of the visual field when viewing the picture at different viewing angles.

[0041] like Figure 2A As shown, according to the display substrate provided by one or more embodiments of the present disclosure, in order to reduce the shielding of the first sub-pixel 111 by the first spacer, the extension direction E01 of the first spacer 0101 and the first direction X have an angle θ1, for example, the angle θ1 ranges from 40° to 50° or 130° to 140°. For further example, the angle θ1 is 45° or 135°. In this case, the shielding of the first sub-pixel 111 by the first spacer is minimal, which can greatly improve the color deviation of the viewing angle.

[0042] like Figure 2A As shown, according to the display substrate provided by one or more embodiments of the present disclosure, the center line CL1 is not parallel to the first direction X.

[0043] like Figure 2A As shown, according to the display substrate provided by one or more embodiments of the present disclosure, the second sub-pixel 112 is included in the first pixel group 011, and the first sub-pixel 111 is included in the second pixel group 012. The first pixel group 011 also includes the first sub-pixel 111, the third sub-pixel 113 and the fourth sub-pixel 114, and the second pixel group 012 also includes the second sub-pixel 112, the third sub-pixel 113 and the fourth sub-pixel 114. In the first pixel group 011 and the first pixel group 011, the line connecting the center C2 of the second sub-pixel 112 and the center C3 of the third sub-pixel 113 is the first line segment LS1; the first sub-pixel 111 and the fourth sub-pixel 114 are located between the second sub-pixel 112 and the third sub-pixel 113 and are respectively arranged 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 are misaligned 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.

[0044] like Figure 2AAs shown, according to the display substrate provided by one or more embodiments of the present disclosure, in the first pixel group 011 and the second pixel group 012, the line connecting the center C1 of the first sub-pixel 111 and the center C4 of the fourth sub-pixel 114 is the second line segment LS2; the ratio of the length of the second line segment LS2 to the first line segment LS1 is less than or equal to 3 / 4. Therefore, when the first sub-pixel and the fourth sub-pixel are sub-pixels of the same color, the light-emitting layer patterns of the first sub-pixel and the fourth sub-pixel in the same pixel group can be formed by evaporation using the same opening of the mask.

[0045] According to the display substrate provided by one or more embodiments of the present disclosure, the first spacer 0101 may be disposed between the first sub-pixel 111 and the second sub-pixel 112 of adjacent pixel groups, and / or between the first sub-pixel 111 and the fourth sub-pixel 114 of adjacent pixel groups.

[0046] like Figure 2A As shown, the display substrate provided according to one or more embodiments of the present disclosure further includes a second spacer 0102, the second spacer 0102 is located between adjacent pixel groups 01, the second spacer 0102 is arranged between the fourth sub-pixel 114 and the second sub-pixel 112 of different pixel groups, or between the fourth sub-pixel 114 and the third sub-pixel 112 of different pixel groups; the extension direction of the second spacer 0102 between the fourth sub-pixel 114 and the second sub-pixel 115 or between the fourth sub-pixel 114 and the third sub-pixel 113 is not perpendicular to the first direction X.

[0047] For example, the second spacer 0102 extends between the fourth sub-pixel 114 and the second sub-pixel 112 of the different pixel group 01, or extends between the fourth sub-pixel 114 and the third sub-pixel 113 of the different pixel group 01. The extension direction E02 of the second spacer 0102 is not perpendicular to the first direction X.

[0048] For example, the display substrate includes a plurality of first pixel groups 011 located in odd rows and a plurality of second pixel groups 012 located in even rows. The display substrate further includes a second spacer 0102, and the second spacer 0102 extends between a fourth sub-pixel 114 in at least one of each first pixel group 011 and each second pixel group 012 and at least one of a second sub-pixel 112 and a third sub-pixel 113 adjacent thereto in the column direction. An extension direction E02 of the second spacer 0102 is not perpendicular to the first direction X.

[0049] For example, in order to reduce the shielding of the fourth sub-pixel 114 by the second spacer, the extension direction E02 of the second spacer 0102 has an angle θ2 with the first direction X, for example, the angle θ2 ranges from 40° to 50° or from 130° to 140°. For further example, the angle θ2 is 45° or 135°. In this case, the shielding of the fourth sub-pixel 114 by the second spacer is minimal, and the color deviation of the viewing angle can be improved to a large extent.

[0050] like Figure 2A As shown, the line connecting the center of the fourth sub-pixel 114 in the second pixel group 012 and the center of the third sub-pixel 113 or the fourth sub-pixel 114 in the first pixel group 011 adjacent to the fourth sub-pixel 114 is the center line CL2, and the center line CL2 is not perpendicular to the first direction X.

[0051] According to the display substrate provided by one or more embodiments of the present disclosure, at least one of the first sub-pixel 111 and the fourth sub-pixel 114 is a sub-pixel of a color that is sensitive to the human eye. For example, the second sub-pixel 112 and the third sub-pixel 113 may be sub-pixels of a color that is not sensitive to the human eye. In the embodiments of the present disclosure, by reducing the shielding of the sensitive color sub-pixel by the first spacer and / or the second spacer, the color shift under different viewing angles can be reduced. For example, the first spacer and / or the second spacer may be located between the sensitive color sub-pixel and the insensitive color sub-pixel.

[0052] like Figure 2A As shown, according to the display substrate provided by one or more embodiments of the present disclosure, the first spacer 0101 and the second spacer 0102 located around the second sub-pixel 112 or the fourth sub-pixel 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 sub-pixel 112 or the third sub-pixel 113. Figure 2A In the example, the spacer pair 01012 is located on the same side of the second sub-pixel 112. The spacer pair 01012 is located around the non-sensitive color sub-pixel, thereby reducing the influence of the spacer pair 01012 on the displayed color and reducing the color deviation of the viewing angle.

[0053] For AMOLED display substrates, spacers have two functions: one is to support the mask for evaporation of the light-emitting layer pattern, and the other is to support the cover plate during packaging.

[0054] like Figure 2AAs shown, in the display substrate provided according to one or more embodiments of the present disclosure, in order to reduce the number of spacers in the display substrate and reduce color deviation under different viewing angles, 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 sub-pixel 111, the second sub-pixel 112, the third sub-pixel 113, and the fourth sub-pixel 114. For example, in this case, spacer pairs may be provided between the pixel groups. For example, three spacer pairs may be formed around each pixel group 01, thereby facilitating the support of the mask when the light-emitting layer is manufactured.

[0055] Figure 2B A display substrate provided according to at least one embodiment of the present disclosure is shown. In the display substrate, a first spacer 0101 and a second spacer 0102 in a pair of spacers 01012 are located on the same side of a third sub-pixel 113 .

[0056] Figure 2C A display substrate provided according to at least one embodiment of the present disclosure is shown. The display substrate includes two types of spacer pairs 01012. One type of spacer pair 01012 is located on the same side (e.g., the left side) of the third sub-pixel 113 in the first pixel group 011. The other type of spacer pair 01012 is located on the same side (e.g., the right side) of the second sub-pixel 112 in the second pixel group 012.

[0057] Figure 2D A display substrate provided according to at least one embodiment of the present disclosure is shown. The display substrate includes a first spacer 0101 and a third spacer 0103. The third spacer 0103 can be arranged between two non-sensitive colors of different pixel groups 01. For example, it can be arranged between the second sub-pixel 112 and the third sub-pixel 113.

[0058] In order to facilitate the description of the pixel arrangement structure, the spacers in the display substrate are removed and the pixel arrangement structure is described below.

[0059] like Figure 2EAs shown, at least one embodiment of the present disclosure provides a display substrate, and the pixel arrangement structure includes a plurality of pixel groups 01. Each pixel group 01 includes a first sub-pixel 111, a second sub-pixel 112, a third sub-pixel 113, and a fourth sub-pixel 114. The line connecting the center C2 of the second sub-pixel 112 and the center C3 of the third sub-pixel 113 is a first line segment LS1; the first sub-pixel 111 and the fourth sub-pixel 114 are located between the second sub-pixel 112 and the third sub-pixel 113 and are arranged on both sides of the first line segment LS1. For example, the line connecting the center C1 of the first sub-pixel 111 and the center C4 of the fourth sub-pixel 114 is a second line segment LS2; the length of the second line segment LS2 is less than the length of the first line segment LS1. For example, in order to obtain a better pixel dense packing effect, the ratio of the length of the second line segment LS2 to the length of the first line segment LS1 is less than or equal to 3 / 4.

[0060] According to the display substrate provided by at least one embodiment of the present disclosure, in the pixel arrangement structure of the display substrate, the distance between the first sub-pixel and the fourth sub-pixel in the same pixel group is reduced. On the one hand, the pixel arrangement can be made closer, the risk of color mixing can be reduced, the color edge can be improved, and the visual graininess can be improved. On the other hand, the spacing between the sub-pixels can be enlarged to facilitate production. Alternatively, the compactness of the pixel arrangement and the spacing between the sub-pixels can be taken into account, and a balance can be sought between the two, so that the pixel arrangement is relatively compact and the spacing between the sub-pixels (pixel definition layer spacing) is enlarged to a certain extent, so as to achieve the effect of reducing the risk of color mixing, improving the color edge, improving the visual graininess, and enlarging the spacing between the sub-pixels. For example, the shape of each sub-pixel given in the embodiment of the present disclosure can be defined by the pixel definition layer, but is not limited thereto. For example, each sub-pixel in the accompanying drawings is an actual light-emitting area. The specific shape of each sub-pixel can be set according to the preparation process. For example, the actual light-emitting area can be determined by the shape of at least one of the electrode, the light-emitting layer, and the pixel definition layer.

[0061] For example, when this pixel arrangement structure is applied to an OLED display substrate and the first sub-pixel and the fourth sub-pixel are of the same color, the light-emitting layer patterns of the first sub-pixel and the fourth sub-pixel in the same pixel group can also be formed by evaporation using the same opening of a mask.

[0062] For example, the first sub-pixel 111 and the fourth sub-pixel 114 may be sub-pixels of colors that are sensitive to human eyes, such as green sub-pixels, yellow sub-pixels, white sub-pixels, etc. For example, compared with the second sub-pixel 112 and the third sub-pixel 113, the areas of the first sub-pixel 111 and the fourth sub-pixel 114 are relatively small, for example, the area of ​​the first sub-pixel 111 is smaller than that of the second sub-pixel 112, and / or the area of ​​the first sub-pixel 111 is smaller than that of the third sub-pixel 113. Similarly, the fourth sub-pixel 114 may refer to the above description of the area of ​​the first sub-pixel 111.

[0063] According to the display substrate provided by at least one embodiment of the present disclosure, the pixel arrangement structure therein can improve the distribution uniformity of sensitive color sub-pixels by adjusting the spacing of visual position sensitive color sub-pixels, thereby improving the visual resolution of the pixel arrangement structure and enhancing the display quality.

[0064] The second sub-pixel 112 and the third sub-pixel 113 may be sub-pixels to which the human eye is not sensitive. For example, one of the second sub-pixel 112 and the third sub-pixel 113 is a red sub-pixel and the other is a blue sub-pixel, but the present invention is not limited thereto. In the embodiments of the present invention, the second sub-pixel 112 is a red sub-pixel and the third sub-pixel 113 is a blue sub-pixel. It should be noted that when the pixel arrangement structure adopts a red, green and blue (RGB) mode, the above-mentioned human eye sensitive color may be green.

[0065] like Figure 2E As shown, the first line segment LS1 may extend along the first direction X, and the second line segment LS2 may extend along the 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 sub-pixel 111 and the fourth sub-pixel 114 are arranged with the first direction X as the axis of symmetry, so that the pixel structure is arranged more uniformly. For example, the first sub-pixel 111 is uniformly arranged relative to the second sub-pixel 112 and the third sub-pixel 113, and remains consistent, so that the pixel structure is arranged more uniformly.

[0066] like Figure 2E As shown, in the display substrate provided according to one or more embodiments of the present disclosure, in the pixel arrangement structure, the second line segment LS2 is perpendicular to the first line segment LS1. Thus, the pixel arrangement can be made more uniform. For example, the second line segment LS2 is located on the perpendicular midline of the first line segment LS1. At this time, the widths of the sub-pixels of each color in the first direction X can be the same, but are not limited to this. Thus, the pixel structure distribution can be made more uniform, the picture display quality is higher, and the display graininess problem at a lower PPI is improved.

[0067] like Figure 2E As shown, for the convenience of description, a plurality of square dotted frames are provided, the length of each dotted frame is 1 / 2L, and four dotted frames can form a square with a side length of L. Figure 2E The dark rectangular dotted frame in the figure is a pixel group 01. The pixel group 01 may be the minimum repeating unit of the pixel arrangement structure. For example, the pixel arrangement structure may be obtained by translationally copying the minimum repeating unit. For example, the minimum repeating unit does not include a sub-unit that can be translated and repeated to be arranged to form a pixel structure.

[0068] like Figure 2EAs shown, 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 the pixel group 01, the maximum area enclosed by the lines connecting the centers of the first sub-pixel 111, the second sub-pixel 112, the fourth sub-pixel 114, and the third sub-pixel 113 is a rhombus, and the first line segment SL1 and the second line segment SL2 are the diagonals of the rhombus, respectively.

[0069] like Figure 2E As shown, in the pixel group 01, the distance between the center C1 of the first sub-pixel 111 and the center C4 of the fourth sub-pixel 114 may be greater than or equal to 1 / 2L, for example, the distance may range from 1 / 2L to L. For example, the first sub-pixel 111 and the fourth sub-pixel may use sub-pixels of the same color. When the first sub-pixel 111 and the fourth sub-pixel use sub-pixels of the same color, for example, when both are first sub-pixels 111, the setting of the distance may also avoid the situation where two adjacent first sub-pixels are difficult to distinguish due to the close distance between adjacent first sub-pixels, and are visually combined into one by the human eye, thereby avoiding the resulting graininess. As a result, the pixel arrangement structure may improve the distribution uniformity of the first sub-pixels, thereby improving the visual resolution, and also improving the display quality.

[0070] like Figure 2E As shown, the distance between the center C3 of the third sub-pixel 113 and the center C2 of the second sub-pixel 112 may be 4 / 3L. In order to make the ratio of the length of the second line segment LS2 to the length of the first line segment LS1 less than or equal to 3 / 4, the distance between the third sub-pixel 113 and the second sub-pixel 112 in the same pixel group may be increased, and / or the distance between the first sub-pixel 111 and the fourth sub-pixel 114 may be reduced, if the process allows.

[0071] like Figure 2E As shown, according to the display substrate provided by one or more embodiments of the present disclosure, in order to obtain a closely arranged pixel structure, the ratio of the length of the second line segment LS2 to the length of the first line segment LS1 may be greater than or equal to 3 / 8.

[0072] Figure 3A The removal of Figure 2E The pixel arrangement structure of the dotted line given in the embodiment of the present disclosure is for the convenience of describing the given virtual line and virtual center. For example, the center can be the centroid, the intersection of the perpendicular bisectors of the opposite sides, etc., but is not limited thereto.

[0073] Figure 3BThe display substrate provided according to one or more embodiments of the present disclosure is shown. In the same pixel group 01, the first sub-pixel 111 and the fourth sub-pixel 114 use the same color. For example, both are the first sub-pixel 111. Since there is no color mixing problem for sub-pixels of the same color, the light-emitting layer patterns of the first sub-pixel 111 and the fourth sub-pixel 114 in the same pixel group 01 can be evaporated using the same opening of the mask, thereby facilitating the stretching of the mask, reducing the stretching pressure, and improving the quality of the stretching.

[0074] like Figure 3B As shown, since the slope of the first sub-pixels 111 in the same row is relatively low, when the first sub-pixels 111 in the same row display a straight line together, due to the low slope ( Figure 3B The first sub-pixel of the adjacent pixel group has a small fluctuation amplitude, thereby avoiding the situation that the two straight lines generated by the large fluctuation amplitude interlocking with the straight lines displayed in the adjacent row are difficult to distinguish and are visually combined into one by the human eye. Therefore, the pixel arrangement structure can improve the visual resolution.

[0075] Figure 3C FIG. 2 shows a display substrate provided according to one or more embodiments of the present disclosure. Figure 3C As shown, in each pixel group 01, the first sub-pixel 111 and the fourth sub-pixel 114 are sub-pixels of the same color, for example, two types of pixel groups may be included, in which the paired sub-pixels of the same color in one type of pixel group are the first sub-pixels (for example, green sub-pixels), and the paired sub-pixels of the same color in another type of pixel group are the fourth sub-pixels (for example, white sub-pixels or yellow sub-pixels). The colors of the two sub-pixels arranged in pairs between the second sub-pixel and the third sub-pixel in the pixel groups adjacent in the diagonal direction of each pixel group are different from the colors of the sub-pixels arranged in pairs between the second sub-pixel and the third sub-pixel in the pixel group.

[0076] Figure 4 A display substrate provided according to one or more embodiments of the present disclosure is shown. Figure 4 As shown, the first line segment LS1 can extend along the first direction X, and the length D1 of the center line LS3 between the adjacent second sub-pixels 112 and the third sub-pixels 113 in two adjacent pixel groups 01 in the first direction X is smaller than the length of the first line segment LS1, so that the pixels can be closely arranged. Figure 4 The length of the first line segment LS1 is 4 / 3L as an example for illustration, but the invention is not limited thereto. For example, the length of the first line segment LS1 may range from 11 / 9L to 13 / 9L.

[0077] For example, in order to arrange the pixels as closely as possible and in accordance with the process conditions, the ratio of the length D1 of the center line LS3 between the center of the adjacent second sub-pixel 112 and the center of the third sub-pixel 113 in two adjacent pixel groups 01 in the first direction to the first line segment LS1 is less than or equal to 1 / 2. Figure 4 In the description, the length of the distance D1 is 2 / 3L, but the invention is not limited thereto. For example, the length of the distance D1 may range from 5 / 9L to 7 / 9L.

[0078] like Figure 4 As shown, in a display substrate provided according to one or more embodiments of the present disclosure, in a pixel arrangement structure, a plurality of pixel groups 01 are arranged in an array, including a plurality of rows and a plurality of columns, for example, a plurality of first pixel groups 011 located in odd rows and a plurality of second pixel groups 012 located in even rows. For example, the pixel groups in even rows and the pixel groups in odd rows are arranged in a staggered manner. The second line segment LS2 may extend along the second direction Y. For example, in order to achieve dense pixel arrangement in the column direction, in adjacent odd rows or in adjacent even rows, the length D2 of the center line L14 of the adjacent first sub-pixel 111 and the fourth sub-pixel 114 in two adjacent pixel groups 01 in the second direction Y is greater than the length of the second line segment LS2. For example, in adjacent odd rows or in adjacent even rows, the ratio of the length D2 of the center line L14 of the adjacent first sub-pixel 111 and the fourth sub-pixel 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.

[0079] For example, in adjacent odd rows or adjacent even rows, the length D2 of the center line L12 of adjacent first sub-pixels 111 and fourth sub-pixels 114 in two adjacent pixel groups 01 in the second direction Y is greater than the length of the second line segment LS2.

[0080] Thus, a pixel structure in which six pixel groups are closely packed around one pixel group can be formed. The pixel groups in odd rows and the pixel groups in even rows are arranged in a staggered manner. For example, the length of half the pixel group in the first direction Y can be staggered in the first direction Y, for example, the staggered length is L, but is not limited thereto. For example, in adjacent odd rows or in adjacent even rows, the ratio of the length D2 of the center line connecting the adjacent first sub-pixel 111 and the fourth sub-pixel 114 in two adjacent pixel groups 01 in the second direction to the length of the second line segment LS2 is greater than or equal to 1 and less than or equal to 3.

[0081] like Figure 4As shown, in a display substrate provided according to one or more embodiments of the present disclosure, in a pixel arrangement structure, an extension line of the second line segment LS2 of each pixel group 01 passes through a midpoint C0 of a center line LSC of two pixel groups 01 adjacent to the pixel group 01 and located in the same row in the second direction Y. The center of each pixel group 01 is C1, and a line connecting the centers C1 of two adjacent pixel groups 01 is a center line LSC. For example, the center C1 of the pixel group 01 may be an intersection of the first line segment LS1 and the second line segment LS2.

[0082] For example, the extension line of the second line segment LS2 of each first pixel group 011 passes through the center C5 of the center line LS3 of the adjacent third sub-pixels 113 and the second sub-pixels 112 of two second pixel groups 012 adjacent to the first pixel group 011 and located in the same row. For example, the center C5 and the center C0 may be the same point.

[0083] like Figure 4 As shown, according to the display substrate provided by one or more embodiments of the present disclosure, in adjacent odd rows or adjacent even rows, the intersection IP1 of the center line LS4 of two third sub-pixels 113 in two adjacent pixel groups 01 arranged in the second direction Y and the first line segment LS1 in the pixel group 01 located between the two third sub-pixels 113 is located between the center IP0 of the first line segment LS1 and the center C4 of the fourth sub-pixel 114. For example, the center IP0 of the first line segment LS1 may be the center C1 of the pixel group 01.

[0084] For example, in adjacent odd rows, the intersection point IP1 of the center line LS4 of two third sub-pixels 113 of adjacent first pixel groups 011 located in the same column and the first line segment LS1 of the second pixel group 012 adjacent to the third sub-pixel 113 is located between the intersection point IP0 of the first line segment LS1 and the second line segment LS2 of the first line segment LS1 of the second pixel group 012 and the center C2 of the second sub-pixel 112. The third sub-pixel 113 in the above description may also be replaced by the second sub-pixel.

[0085] For example, the first spacer 0101 is disposed between adjacent pixel groups in different rows. For example, the second spacer 0102 is disposed between adjacent pixel groups in different rows.

[0086] like Figure 4As shown, according to the pixel arrangement structure provided by one or more embodiments of the present disclosure, in the same pixel group, the closest distance between the second sub-pixel 112 and the first sub-pixel 111 is L1, the closest distance between the second sub-pixel 112 and the fourth sub-pixel 114 is L2, the closest distance between the third sub-pixel 113 and the first sub-pixel 111 is L3, and the closest distance between the third sub-pixel 113 and the fourth sub-pixel 114 is L4, L1=L2=L3=L4.

[0087] like Figure 4 As shown, according to the pixel arrangement structure provided by one or more embodiments of the present disclosure, the closest distances between the first sub-pixel 111 or the fourth sub-pixel 114 and the second sub-pixel 112 and the third sub-pixel 113 in the pixel group adjacent to it in the second direction and not in the same row are L5 and L6 respectively, and L5=L6.

[0088] For example, in one embodiment, L1 = L2 = L3 = L4 = L5 = L6.

[0089] For example, L1, L2, L3, L4, L5 and L6 can be found in Fig. 7A and 7B There is a note about the minimum process spacing d. Each closest distance is the minimum distance between two sub-pixels. For example, in actual production, L1, L2, L3, L4, L5 and L6 can be made as close to the minimum process spacing d as possible.

[0090] like Figure 4 As shown, according to the pixel arrangement structure provided by one or more embodiments of the present disclosure, in adjacent sub-pixels, the relative sides are approximately parallel or the angle between them is less than 45°, and the adjacent sub-pixels include any two adjacent ones of the first sub-pixel 111, the second sub-pixel 112, the third sub-pixel 113 and the fourth sub-pixel 114.

[0091] like Figure 5AAs shown, according to a display substrate provided by one or more embodiments of the present disclosure, in the pixel arrangement structure, the first sub-pixel 111 and the fourth sub-pixel 114 are both strip-shaped, and the extension direction A1 of the first sub-pixel 111 does not overlap with the extension direction A2 of the fourth sub-pixel 114. For example, the extension direction A1 of the first sub-pixel 111 intersects or has an angle with the extension direction A2 of the fourth sub-pixel 114. For example, in each pixel group, the first sub-pixel 111 and the fourth sub-pixel 114 are arranged with the first direction X as the axis of symmetry and are tilted at a certain angle. For example, the angle of inclination and the first direction are in the range of 30°-50°, and further for example, 45°, but not limited thereto. For example, the extension direction A1 of the first sub-pixel 111 may be the long axis direction of the first sub-pixel 111, but not limited thereto. For example, the extension direction A2 of the fourth sub-pixel 114 may be the long axis direction of the fourth sub-pixel 114, but not limited thereto.

[0092] like Figure 5A As shown, according to the pixel arrangement structure provided by 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 symmetrically arranged relative 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 asymmetrically arranged relative to the second line segment LS2.

[0093] 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 the present invention is not limited thereto.

[0094] For example, in the embodiments of the present disclosure, a stripe 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 other directions. The stripe is not limited to a rectangle, and may be other shapes, for example, an elongated hexagon, an elongated ellipse, a trapezoid, or other shapes. In the embodiments of the present disclosure, the shape of each sub-pixel is not limited to a regular shape, and may also be an irregular shape.

[0095] For example, the angle between the extension direction A1 of the first sub-pixel 111 and the extension direction A2 of the fourth sub-pixel 114 is 70°-100°, further, 80°-95°, and further, 90° (right angle), so that the first sub-pixel 111 and the fourth sub-pixel 114 with a larger area can be used to increase the light output area and facilitate the stretching of the mask during the production of the mask. For example, in the case of a right angle, a deviation of several degrees above or below can be allowed. For example, it can deviate by 5° above or below 90°.

[0096] Figure 5BA display substrate provided according to one or more embodiments of the present disclosure is shown, wherein in a pixel arrangement structure, an angle between an extension direction A1 of a first sub-pixel 111 and an extension direction A2 of a fourth sub-pixel 114 is a right angle, and, in the same pixel group 01, the first sub-pixel 111 and the fourth sub-pixel 114 are sub-pixels of the same color.

[0097] Figure 6 FIG. 2 shows a display substrate provided according to one or more embodiments of the present disclosure. Figure 6 As shown, the second sub-pixel 112 and the third sub-pixel 113 may be in a rhombus or approximately rhombus shape. Approximate rhombuses include, for example, rounded rhombuses, chamfered rhombuses, etc., but are not limited thereto. Sub-pixel shapes in a rhombus or approximately rhombus shape are more conducive to dense pixel arrangement. For example, the first sub-pixel can be relatively symmetrically surrounded by the third sub-pixel and the second sub-pixel, with the long sides of the first sub-pixel 111 facing the second sub-pixel 112 and the short sides facing the third sub-pixel 113, so as to maximize the uniformity of the pixel arrangement. The more uniform arrangement of the first sub-pixel 111 can improve the color edge to a certain extent, which is conducive to the realization of HPPI and can increase the pixel aperture ratio as much as possible.

[0098] The shape of each sub-pixel is not limited to the above, and the shape of the sub-pixel can be adjusted as needed. Area maximization is the main principle for determining the shape of the sub-pixel.

[0099] To avoid color mixing, the spacing between sub-pixels of different colors needs to be greater than the minimum process spacing d of the patterning process. Considering some special process symmetry requirements, for example, the FMM network hopes that the opening pattern and distribution are symmetrical. The shapes of the first sub-pixel and the fourth sub-pixel can be symmetrical pentagons with right-angled bottom angles (such as Figure 2E As shown in the figure, it can be seen that the spacing between the second and third sub-pixels between adjacent pixel groups with symmetrical sub-pixels is significantly larger than the spacing between other sub-pixels of different colors (the minimum process spacing d), that is, there is still available area in the design. When the FMM stretching technology allows or other processes that are not sensitive to symmetry (such as CF) are used, an asymmetric sub-pixel shape can be used to achieve the maximum sub-pixel area.

[0100] Fig. 7A and Figure 7B FIG. 2 shows a pixel arrangement structure in a display substrate provided according to one or more embodiments of the present disclosure. Fig. 7A and Figure 7B As shown, under the condition that an asymmetric sub-pixel shape is allowed, according to different minimum process spacings d of the imaging process, the second sub-pixel 112 and the third sub-pixel 113 can be a right-angled trapezoid or a right-angled trapezoid with sharp angles cut off to maximize the area.

[0101] like Fig. 7AAs shown, since the shapes of the second sub-pixel 112 and the third sub-pixel 113 are both right-angled trapezoids, compared with the case where the shapes of the second sub-pixel 112 and the third sub-pixel 113 are both hexagons (two right-angled bottom angle symmetrical pentagons form a hexagon together), the acute angle portion 190 of the second sub-pixel 112 and the third sub-pixel 113 can further increase the area of ​​the second sub-pixel 112 and the third sub-pixel 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.

[0102] like Figure 7B As shown, the shapes of the second sub-pixel 112 and the third sub-pixel 113 are both isosceles trapezoids with sharp angles cut off. Therefore, under the condition of a certain process precision, that is, under the condition of a certain distance between the first sub-pixel 111 and the second sub-pixel 112 and the third sub-pixel 113, the areas of the second sub-pixel 112 and the third sub-pixel 113 are increased, thereby improving the utilization rate of the space in the pixel group.

[0103] According to the pixel arrangement structure in the display substrate provided by one or more embodiments of the present disclosure, the shapes of the second sub-pixel 112 and the third sub-pixel 113 include at least one of an isosceles trapezoid, a hexagon, and a rhombus, and the second sub-pixel 112 includes at least one of a pentagon, a rectangle, and an approximate rectangle. The approximate rectangle includes, for example, a rounded rectangle, but is not limited thereto.

[0104] Figure 8 FIG. 2 shows a display substrate provided according to one or more embodiments of the present disclosure. Figure 8 As shown, in the same row of pixel groups, the third sub-pixel 113 and the first sub-pixel 111 can be driven by the first driving line DL1, and the second sub-pixel 112 and the fourth sub-pixel 114 can be driven by the 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.

[0105] like Figure 8 As shown, the first sub-pixel 111 and the fourth sub-pixel 114 in the odd-numbered column pixel group can use the first data line DT1 to input data signals, and the second sub-pixel 112 and the third sub-pixel 113 located between two adjacent first data lines DT1 can use the second data line DT2 to input data signals. For example, the data signal includes voltage and / or current. The first data line DT1 extends along the E2 direction, and the second data line DT2 also extends along the E2 direction, and the E2 direction is parallel to the second direction Y.

[0106] Fig. 9 A schematic diagram of a display substrate is shown. In the display substrate, the widths of the sub-pixels in the first direction X are different. Therefore, the widths of the sub-pixels are different, and color deviation is easily generated when viewed at different viewing angles.

[0107] Fig.10 Schematic diagram of a display substrate provided by one or more embodiments of the present disclosure is shown. Along the first direction X, the widths of the first sub-pixel 111, the second sub-pixel 112, the third sub-pixel 113 and the fourth sub-pixel 114 in the first direction X are the same. Thus, the color deviation of the viewing angle when viewed at different viewing angles can be reduced.

[0108] For example, a pixel unit group 01 includes two pixel units, for example, the first sub-pixel 111 and the second sub-pixel 112 form one pixel unit, and the third sub-pixel 113 and the fourth sub-pixel 114 form another pixel unit. Each pixel unit can share the third sub-pixel 111 or the fourth sub-pixel 114 adjacent thereto to form a virtual pixel. Display is achieved by sharing sub-pixels.

[0109] At least one embodiment of the present disclosure provides a display device, including any of the above-mentioned display substrates. Therefore, the color deviation of different viewing angles can be improved and the display quality can be improved. When the display device adopts the display panel of the pixel arrangement structure provided in the embodiment of the present disclosure, the resolution of the display device can be further improved, and thus a display device with real high resolution can be provided. In addition, since the pixel arrangement structure provided in the embodiment of the present disclosure can have good symmetry, the uniformity of pixel distribution can be improved, and the display effect of the display device can be improved.

[0110] For example, in some examples, the display device may be any product or component with a display function, such as a smart phone, a tablet computer, a television, a monitor, a laptop computer, a digital photo frame, a navigator, or the like.

[0111] There are a few points to note:

[0112] (1) In the drawings of the embodiments of the present disclosure, only the structures related to the embodiments of the present disclosure are involved, and other structures can refer to the general design.

[0113] (2) In the absence of conflict, features in the same embodiment or in different embodiments of the present disclosure may be combined with each other.

[0114] The above are only specific embodiments of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present disclosure, which should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. A display substrate, comprising: a plurality of green sub-pixels, a plurality of red sub-pixels and a plurality of blue sub-pixels, wherein: A plurality of red sub-pixels and a plurality of blue sub-pixels are alternately arranged in a first direction into a plurality of rows, wherein centers of a red sub-pixel and a blue sub-pixel adjacent to each other in one of the rows arranged in the first direction are located on a first virtual straight line parallel to the first direction and are at a first distance, and centers of another blue sub-pixel and another red sub-pixel adjacent to the one red sub-pixel and the one blue sub-pixel respectively in another row arranged in the first direction and adjacent to the one of the rows are located on a second virtual straight line parallel to the first direction and are at a second distance, and the first distance is not equal to the second distance, so that centers of the one red sub-pixel and the one blue sub-pixel and the other blue sub-pixel and the other red sub-pixel are sequentially connected to form a first virtual trapezoid; A plurality of green sub-pixels are arranged in a second direction to form a plurality of rows, and centers of two adjacent green sub-pixels in the same row are located on a third virtual straight line parallel to the second direction and a distance therebetween is a third distance, centers of another two green sub-pixels in an adjacent row that are respectively adjacent to the two green sub-pixels are located on a fourth virtual straight line parallel to the second direction and a distance therebetween is a fourth distance, The third distance and the fourth distance are not equal, so that the centers of the two green sub-pixels and the other two green sub-pixels are sequentially connected to form a second virtual trapezoid, wherein one of the two green sub-pixels is located inside the first virtual trapezoid, and the third distance is smaller than the fourth distance. One of the two red sub-pixels whose center lines form the first virtual trapezoid is located inside the second virtual trapezoid. The display substrate includes a plurality of pixel groups, each pixel group includes two green sub-pixels, one red sub-pixel and one blue sub-pixel, in each pixel group, a line connecting the center of the red sub-pixel and the center of the blue sub-pixel is a first line segment; two green sub-pixels are located between the red sub-pixel and the blue sub-pixel and are respectively arranged on both sides of the first line segment; The display substrate further includes a first spacer, which is disposed between a green sub-pixel and a red sub-pixel of adjacent pixel groups, and an extending direction of the first spacer between the green sub-pixel and the red sub-pixel of adjacent pixel groups is not perpendicular to the first direction. Half of the distance between the center lines of two blue sub-pixels adjacent to the same red sub-pixel in the first direction or half of the distance between the center lines of two red sub-pixels adjacent to the same blue sub-pixel in the first direction is L, The third distance ranges from 1 / 2L to L, and the fourth distance ranges from L to 3 / 2L.

2. The display substrate according to claim 1, wherein: The shape of at least one of the red sub-pixel and the blue sub-pixel includes a rhombus or a shape that is approximately rhombus, and the shape that is approximately rhombus includes at least one of a rounded rhombus and a cut-corner rhombus.

3. The display substrate according to claim 1, wherein: The shape of the green sub-pixel includes a stripe shape, and the stripe shape includes at least one of a rectangle, a rounded rectangle, a pentagon, a hexagon, an oblong, or a trapezoid.

4. The display substrate according to claim 1, wherein: The long sides of the four green sub-pixels whose centers are connected to form the second virtual trapezoid all face the red sub-pixel located in the second virtual trapezoid.

5. The display substrate according to claim 1, wherein: The two green sub-pixels whose center distance is the third distance are axially symmetric with respect to the first virtual straight line, and the two green sub-pixels whose center distance is the fourth distance are axially symmetric with respect to the first virtual straight line; or, the two green sub-pixels whose center distance is the third distance are axially symmetric with respect to the second virtual straight line, and the two green sub-pixels whose center distance is the fourth distance are axially symmetric with respect to the second virtual straight line.

6. The display substrate according to claim 1, wherein: The minimum spacing between two green sub-pixels whose center distance is the third distance is not greater than the maximum size of the red sub-pixel in the second direction, and the minimum spacing between two green sub-pixels whose center distance is the fourth distance is not less than the maximum size of the red sub-pixel in the second direction, or, the minimum spacing between two green sub-pixels whose center distance is the third distance is not greater than the maximum size of the blue sub-pixel in the second direction, and the minimum spacing between two green sub-pixels whose center distance is the fourth distance is not less than the maximum size of the blue sub-pixel in the second direction.

7. The display substrate according to claim 1, wherein: The long sides of the green sub-pixels are all oriented toward the red sub-pixels adjacent to the green sub-pixels, and the short sides of the green sub-pixels are all oriented toward the blue sub-pixels adjacent to the green sub-pixels.

8. The display substrate according to claim 1, wherein: The second distance is smaller than the first distance.

9. The display substrate according to claim 1, wherein: The first direction is a row direction and the second direction is a column direction, or the first direction is a column direction and the second direction is a row direction.

10. The display substrate according to any one of claims 1 to 9, wherein: In the second direction, the plurality of red sub-pixels and the plurality of blue sub-pixels are arranged alternately at a first distance and a second distance, and in the first direction, the plurality of green sub-pixels are arranged alternately at a third distance and a fourth distance.

11. The display substrate according to any one of claims 1 to 9, wherein: The first virtual trapezoid overlaps with the second virtual trapezoid, and the first virtual straight line intersects with the third virtual straight line.

12. The display substrate according to any one of claims 1 to 9, wherein: The first virtual trapezoid overlaps with the second virtual trapezoid, and the line segment constituting the first distance intersects with the line segment constituting the third distance.

13. The display substrate according to claim 12, wherein: The line segment constituting the first distance is perpendicular to the line segment constituting the third distance.

14. The display substrate according to any one of claims 1 to 7, wherein: The first virtual trapezoid overlaps with the second virtual trapezoid, a line segment constituting the first distance intersects with a line segment constituting the third distance, and the second distance is smaller than the first distance.

15. A display device comprising the display substrate according to any one of claims 1 to 14.

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