CROSS REFERENCE TO RELATED APPLICATIONS

This application is the National Stage of PCT/CN2018/124881 filed on Dec. 28, 2018, which claims priority under 35 U.S.C. § 119 of Chinese Application No. 201810135948.6 filed on Feb. 9, 2018, the disclosure of which is incorporated by reference.

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.

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 first sub-pixel, a second sub-pixel and a first spacer; 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 first spacer is between the first sub-pixel and the second sub-pixel, 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.

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, the display substrate includes a plurality of pixel groups, each of the plurality of pixel groups includes one first sub-pixel, one second sub-pixel, one third sub-pixel and one fourth sub-pixel; and the first spacer is between the first sub-pixel and the second sub-pixel which belong to different ones of the plurality of pixel groups.

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 is smaller than a length of the first line segment.

For example, a ratio of the length of the second line segment to the length of the first line segment is less than or equal to 3/4.

For example, the display substrate further includes: a second spacer, the second spacer is between two adjacent ones of the plurality of pixel groups, and the second spacer is between the fourth sub-pixel and the second sub-pixel which belong to different ones of the plurality of pixel groups, or between the fourth sub-pixel and the third sub-pixel which belong to different ones of the plurality of pixel groups; an extension direction of the second spacer between the fourth sub-pixel and the second sub-pixel or between the fourth sub-pixel and the third sub-pixel is not perpendicular to the first direction.

For example, the first spacer is between the first sub-pixel and the second sub-pixel which belong to two adjacent ones of the plurality of pixel groups, and/or between the first sub-pixel and the fourth sub-pixel which belong to two adjacent ones of the plurality of pixel groups.

For example, the first spacer and the second spacer around the second sub-pixel or the fourth sub-pixel form a spacer pair, and the first spacer and the second spacer in the spacer pair are on the same side of the second sub-pixel or the third sub-pixel.

For example, in the same one of the plurality of pixel groups, no spacer is among the first sub-pixel, the second sub-pixel, the third sub-pixel and the fourth sub-pixel.

For example, in each of the plurality of pixel groups, the first sub-pixel and the fourth sub-pixel are both strip-shaped, and an extension direction of the first sub-pixel and an extension direction of the fourth sub-pixel do not coincide.

For example, an included angle between the extension direction of the first sub-pixel and the extension direction of the fourth sub-pixel ranges from 70° to 100°.

For example, the first sub-pixel and the fourth sub-pixel are symmetrically arranged relative to the first line segment, and/or the second sub-pixel and the third sub-pixel are symmetrically arranged relative to the second line segment.

For example, the first line segment extends in the first direction and the second line segment extends in a second direction; the plurality of pixel groups are arranged in an array to form a plurality of rows and a plurality of columns, and pixel groups of even rows and pixel groups of odd rows are arranged in a staggered way; a length of a center connection line between the second sub-pixel and third sub-pixel which are adjacent to each other in two adjacent ones of the plurality of pixel groups in the first direction is less than the length of the first line segment; in two adjacent ones of the odd rows or in two adjacent ones of the even rows, a length of a center connection line between the first sub-pixel and fourth sub-pixel which are adjacent to each other in two adjacent ones of the plurality of pixel groups in the second direction is greater than the length of the second line segment.

For example, an extension line of the second line segment of each pixel group passes through a midpoint of a center connection line between two pixel groups which are adjacent to the pixel group in the second direction and are in the same row.

For example, in two adjacent ones of the odd rows or in two adjacent ones of the even rows, an intersection point of a center connection line between two third sub-pixels in two adjacent ones of the plurality of pixel groups arranged in the second direction and the first line segment in one pixel group between the two third sub-pixels is between a center of the first line segment and the center of the second sub-pixel of the one pixel group.

For example, at least one selected from the group consisting of the first sub-pixel and the fourth sub-pixel is a sub-pixel with a human eye sensitive color.

For example, in the first direction, widths of the first sub-pixel, the second sub-pixel, the third sub-pixel and the fourth sub-pixel are the same.

For example, the first line segment extends in the first direction and the second line segment extends in the second direction, the first spacer and the second spacer have elongated shapes, and extension directions of the elongated shapes are different from the first direction and the second direction.

For example, at least one selected from the group consisting of the first spacer and the second spacer does not overlap with the center connection line between the first sub-pixel and the third sub-pixel.

For example, the first line segment extends in the first direction and the second line segment extends in the second direction, and an orthographic projection of the first spacer on a straight line in the first direction does not overlap or partially overlap with an orthographic projection of at least one selected from the group consisting of the second sub-pixel and the third sub-pixel on a straight line in the first direction.

For example, a ratio of a sum of numbers of the first spacer and the second spacer to a number of sub-pixels is 0.3-1, and the sub-pixels include the first sub-pixel, the second sub-pixel, the third sub-pixel and the fourth sub-pixel.

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

At least one embodiment of the present disclosure further provides a display substrate, including:

a pixel arrangement structure including a plurality of pixel groups; each of the plurality of pixel groups includes a first sub-pixel, a second sub-pixel, a third sub-pixel and a fourth sub-pixel; in each of the plurality of pixel groups, a connection 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 between the second sub-pixel and the third sub-pixel and are respectively at two sides of the first line segment; a connection line between a center of the first sub-pixel and the center of the fourth sub-pixel is a second line segment; a length of the second line segment is less than a length of the first line segment;

the display substrate further includes at least one of the following spacers:

a first spacer between the first sub-pixel and the second sub-pixel which are adjacent to each other in two adjacent ones of the plurality of pixel groups;

a second spacer between the fourth sub-pixel and the second sub-pixel which are adjacent to each other in two adjacent ones of the plurality of pixel groups; and

a third spacer between the first sub-pixel and the fourth sub-pixel in each of the plurality of pixel groups.

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

For example, the pixel groups of the even rows and the pixel groups of the odd rows are offset by a length of half a pixel group in a first direction, and the first direction is a row direction.

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

