Display substrate and display device

1. A display substrate, comprising:

a flexible substrate body comprising a plurality of island portions spaced apart from each other, a plurality of connection areas connecting the plurality of island portions, and a penetration portion penetrating the substrate body among the plurality of connection areas, wherein at least a portion of each edge of the island portion is connected with the connection area;

each island portion is respectively provided with a plurality of pixel groups, each pixel group comprises a first pixel unit and a second pixel unit which are adjacently arranged along a first direction, an arrangement of the sub-pixels in the first pixel unit is different from an arrangement of the sub-pixels in the second pixel unit, the plurality of pixel groups form an n×m arrangement on the island portion and cover the whole island portion; the first direction is a direction parallel to one edge of the island portion;

where n represents a number of the pixel groups in a row direction, m represents a number of the pixel groups in a column direction, and n and m are integers greater than or equal to 1, respectively;

wherein a shape of the penetration portion changes when the substrate body is stretched.

2. The display substrate according to claim 1 , wherein both the sub-pixels within the first pixel unit and the sub-pixels within the second pixel unit are arranged to form a quadrangular pixel unit area.

3. The display substrate according to claim 2 , wherein the arrangement of the sub-pixels in a mirror image of the first pixel unit mirrored along a straight line parallel to the first direction is the same as the arrangement of the sub-pixels in the second pixel unit.

4. The display substrate according to claim 2 , wherein the sub-pixels within the first pixel unit and the second pixel unit are arranged to form a square pixel unit area.

5. The display substrate according to claim 4 , wherein an area of the pixel unit area formed by the sub-pixels arranged in the first pixel unit is equal to an area of the pixel unit area formed by the sub-pixels arranged in the second pixel unit.

6. The display substrate according to claim 3 , wherein a pixel unit arrangement area in the island portion is a quadrilateral, and the quadrangular pixel unit area formed by the combination arrangement of at least three sub-pixels within the first pixel unit included in the pixel group is matched with the pixel unit arrangement area.

7. The display substrate according to claim 6 , wherein the first pixel unit comprises four sub-pixels, and at least three of the four sub-pixels have different colors;

a first sub-pixel and a second sub-pixel respectively cover two ends of a first diagonal line of a pixel unit area where the first pixel unit is located, and a third sub-pixel and a fourth sub-pixel respectively cover two ends of a second diagonal line of the pixel unit area.

8. The display substrate according to claim 7 , wherein a sub-pixel of a third color within the first pixel unit is located adjacent to a sub-pixel of the third color within the second pixel unit.

9. The display substrate according to claim 7 , wherein each of the four sub-pixels is a quadrilateral.

10. The display substrate according to claim 7 , wherein the first sub-pixel and the second sub-pixel are both concave hexagons, and the third sub-pixel and the fourth sub-pixel are both quadrilaterals.

11. The display substrate according to claim 7 , wherein the third sub-pixel and the fourth sub-pixel are sub-pixels of the same color, the first sub-pixel, the second sub-pixel and the third sub-pixel are respectively sub-pixels of different colors, an area of the third sub-pixel is equal to an area of the fourth sub-pixel, and an area of the first sub-pixel is equal to an area of the second sub-pixel.

12. The display substrate according to claim 11 , wherein the area of the first sub-pixel is larger than the area of the third sub-pixel.

13. The display substrate according to claim 6 , wherein the first pixel unit comprises three sub-pixels which are respectively sub-pixels of different colors;

a first sub-pixel of the three sub-pixels covers a first end of a first diagonal line of a pixel unit area where the first pixel unit is located and a first end of a second diagonal line, a second sub-pixel covers a second end of the first diagonal line of the pixel unit area, and a third sub-pixel covers a second end of the second diagonal line of the pixel unit area.

14. The display substrate according to claim 13 , wherein each of the sub-pixels is a quadrilateral.

15. The display substrate according to claim 13 , wherein the first sub-pixel is a concave hexagon, the second sub-pixel and the third sub-pixel are quadrilaterals.

16. The display substrate according to claim 13 , wherein at least one of the three sub-pixels comprises at least two sub-pixel units of the same color.

17. The display substrate according to claim 13 , wherein the area of the first sub-pixel is larger than the area of the second sub-pixel and the area of the third sub-pixel.

18. The display substrate according to claim 6 , wherein the first pixel unit comprises three sub-pixels which are respectively sub-pixels of different colors;

the first sub-pixel and the second sub-pixel respectively cover two ends of the first diagonal line of the pixel unit area where the first pixel unit is located, and the third sub-pixel is arranged between the first sub-pixel and the second sub-pixel and covers the second diagonal line of the pixel unit area and is arranged along the second diagonal line.

19. The display substrate according to claim 18 , wherein the first sub-pixel and the second sub-pixel are triangular; the third sub-pixel is oblong.

20. A display device, comprising the display substrate according to claim 1 .