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EP-3751336-B1 - DISPLAY SUBSTRATE AND DISPLAY DEVICE

EP3751336B1EP 3751336 B1EP3751336 B1EP 3751336B1EP-3751336-B1

Inventors

  • LIU, Libin
  • YANG, QIAN
  • WANG, HONGLI
  • HUANGFU, LUJIANG

Dates

Publication Date
20260506
Application Date
20181228

Claims (11)

  1. A display substrate, comprising: a plurality of pixel groups (01), a first spacer (0101) and a second spacer (0102), each of the plurality of pixel groups (01) comprising one first sub-pixel (111), one second sub-pixel (112), one third sub-pixel (113) and one fourth sub-pixel (114), all of the first sub-pixel (111), the second sub-pixel (112), the third sub-pixel (113) and the fourth sub-pixel (114) being directly adjacent to each other; wherein 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), and the first direction (X) is at least one selected from the group consisting of a row direction and a column direction, the row direction and the column direction are arrangement directions of an array formed by the plurality of pixel groups (01); the first spacer (0101) is between the first sub-pixel (111) and the second sub-pixel (112) which belong to directly adjacent ones of the plurality of pixel groups (01), and an 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), the first spacer (0101) and the second spacer (0102) are configured to support a mask plate for vapor deposition of a light emitting layer pattern, which is characterized in that , the second spacer (0102) is between the fourth sub-pixel (114) and the second sub-pixel (112) which belong to directly adjacent ones of the plurality of pixel groups (01), an extension direction of the second spacer (0101) between the fourth sub-pixel 114 and the second sub-pixel 112 is not perpendicular to the first direction X, the first spacer (0101) and the second spacer (0102) around the same second sub-pixel (112) form a spacer pair (01012), and the first spacer (0101) and the second spacer (0102) in the spacer pair (01012) are located at the same side of the second sub-pixel (112).
  2. The display substrate according to claim 1, wherein the extension direction of the first spacer (0101) has an included angle with the first direction (X), and a range of the included angle is 40° - 50° or 130° - 140°, preferably, the included angle is 45° or 135°.
  3. The display substrate according to claim 1 or 2, wherein the center connection line (CL1) is not parallel to the first direction (X).
  4. The display substrate according to any one of claims 1-3, wherein, in each of the plurality of pixel groups (01), a connection line between the center (C2) of the second sub-pixel (112) and a 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 between the second sub-pixel (112) and the third sub-pixel (113), and are respectively on two sides of the first line segment (LS1); a connection line between the center (C1) of the first sub-pixel (111) and a center (C4) of the fourth sub-pixel (114) is a second line segment (LS2); a length of the second line segment (LS2) is smaller than a length of the first line segment (LS1), preferably, a 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.
  5. The display substrate according to any one of claims 1-3, wherein, in each of the plurality of pixel groups (01), the first sub-pixel (111) and the fourth sub-pixel (114) are both strip-shaped, and an extension direction of the first sub-pixel (111) and an extension direction of the fourth sub-pixel (114) do not coincide, preferably, an included angle between the extension direction of the first sub-pixel (111) and the extension direction of the fourth sub-pixel (114) ranges from 70° to 100°.
  6. The display substrate according to claim 4, wherein the first line segment (LS1) extends in the first direction (X) and the second line segment (LS2) extends in a second direction (Y); the pixel groups in the plurality of pixel groups (01) form a plurality of rows and a plurality of columns, and pixel groups (01) of even rows and pixel groups (01) of odd rows are arranged in a staggered way, the pixel groups in rows are staggered alternatingly in a column direction; a length of a center connection line (LS3) between the second sub-pixel (112) and third sub-pixel (113) which are adjacent to each other in two adjacent ones of the plurality of pixel groups (01) in the first direction is less than the length of the first line segment (LS1); in two adjacent ones of the odd rows or in two adjacent ones of the even rows, a length of a center connection line (L14) between the first sub-pixel (111) and fourth sub-pixel (114) which are adjacent to each other in two adjacent ones of the plurality of pixel groups (01) in the second direction is greater than the length of the second line segment (LS2), preferably, an extension line of the second line segment (LS2) of each pixel group (01) passes through a midpoint of a center connection line (LSC) between two pixel groups (01) which are adjacent to the pixel group (01) in the second direction (Y) and are in the same row.
  7. The display substrate according to any one of claims 1-6, wherein at least one selected from the group consisting of the first sub-pixel (111) and the fourth sub-pixel (114) is a sub-pixel with a human eye sensitive color.
  8. The display substrate according to any one of claims 1-6, wherein, in the first direction, widths of the first sub-pixel (111), the second sub-pixel (112), the third sub-pixel (113) and the fourth sub-pixel (114) are the same.
  9. The display substrate according to claim 4, wherein the first line segment (LS1) extends in the first direction (X) and the second line segment (LS2) extends in the second direction (Y), and an orthographic projection of the first spacer (0101) on a straight line in the first direction (X) does not overlap or partially overlap with an orthographic projection of at least one selected from the group consisting of the second sub-pixel (112) and the third sub-pixel (113) on the straight line in the first direction (X).
  10. The display substrate according to any one of claims 1-9, wherein a ratio of a sum of numbers of the first spacer (0101) and the second spacer (0102) to a number of sub-pixels is 0.3-1, and the sub-pixels comprise the first sub-pixel (111), the second sub-pixel (112), the third sub-pixel (113) and the fourth sub-pixel (114).
  11. A display device, comprising the display substrate according to any one of claims 1-10.

Description

TECHNICAL FIELD Embodiments of the present disclosure relates to a display substrate and a display device. BACKGROUND 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 becoming wider and wider. In general, the resolution of a display device can be improved by reducing the size of pixels and reducing the spacing between pixels. However, the reduction in the size of pixels and the spacing between pixels also requires higher and higher precision of the manufacturing process, which leads to the increase in the difficulty of the manufacturing process and the manufacturing cost of the display device. On the other hand, sub-pixel rendering (SPR) technology can make use of the difference of human eyes' resolution to sub-pixels of different colors, change the mode of defining a pixel simply by conventional red, green and blue sub-pixels, share sub-pixels of certain position resolution insensitive colors among different pixels, and use relatively few sub-pixels to simulate and realize the same pixel resolution performance capability, thus reducing the difficulty of the manufacturing process and the manufacturing cost. In display devices, spacers are usually provided to play a supporting role. CN 104051493 A discloses an organic light emitting display device which includes a display substrate including a plurality of pixel areas PA defined at least partially by a plurality of non-pixel areas; a sealing substrate facing the display substrate; and spacers located on one of the non-pixel areas of the display substrate between the display substrate and the sealing substrate to maintain the spacing between the display substrate and the sealing substrate. US2016254476 A1 discloses an organic light emitting diode display, which may include a first substrate, a circuit unit, an electrode portion including first, second, third and fourth electrodes, a pixel definition layer, a first organic emission layer, a second organic emission layer, a third organic emission layer, two or more spacers, a common electrode and a second substrate. SUMMARY Embodiments of the present disclosure provide a display substrate and a display device to reduce color shift under different viewing angles and improve display quality. At least one embodiment of the present disclosure provides a display substrate, including: a plurality of pixel groups, a first spacer and a second spacer; each of the plurality of pixel groups comprising one first sub-pixel, one second sub-pixel, one third sub-pixel and one fourth sub-pixel, all of the first sub-pixel, the second sub-pixel, the third sub-pixel and the fourth sub-pixel being directly adjacent to each other; a connection line between a center of the first sub-pixel and a center of the second sub-pixel is a center connection line, the center connection line is not perpendicular to a first direction, and the first direction is at least one selected from the group consisting of a row direction and a column direction, the row direction and the column direction are arrangement directions of an array formed by the plurality of pixel groups; the first spacer is between the first sub-pixel and the second sub-pixel which belong to directly adjacent ones of the plurality of pixel groups, and an extension direction of the first spacer between the first sub-pixel and the second sub-pixel is not perpendicular to the first direction, the first spacer and the second spacer are configured to support a mask plate for vapor deposition of a light emitting layer pattern, the second spacer is between the fourth sub-pixel and the second sub-pixel which belong to directly adjacent ones of the plurality of pixel groups, an extension direction of the second spacer between the fourth sub-pixel and the second sub-pixel is not perpendicular to the first direction, the first spacer and the second spacer around the same second sub-pixel form a spacer pair, and the first spacer and the second spacer in the spacer pair are located at the same side of the second sub-pixel. For example, the extension direction of the first spacer has an included angle with the first direction, and a range of the included angle is 40° - 50° or 130° - 140°. For example, the included angle is 45° or 135° For example, the center connection line is not parallel to the first direction. For example, in each of the plurality of pixel groups, a connection line between the 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 between the second sub-pixel and the third sub-pixel and are respectively on two sides of the first line segment; a connection line between the center of the first sub-pixel and a center of the fourth sub-pixel is a second line segment; a length of the second line segment