Display substrate and display device

A display substrate, comprising a display area, wherein the display area comprises:

• a first display sub-area;
• and
• a second display sub-area;
• wherein a distribution density of pixels in the first display sub-area is higher than a distribution density of pixels in the second display sub-area;
• the first display sub-area comprises:
• a plurality of first pixel elements;
• and a plurality of second pixel elements;
• the second display sub-area comprises:
• a plurality of third pixel elements;
• wherein at least one of the plurality of first pixel elements comprises:
• a first sub-pixel, and a second sub-pixel;
• at least one of the plurality of second pixel elements comprises:
• a third sub-pixel, and a fourth sub-pixel;
• and
• at least one of the third pixel element comprises:
• a fifth sub-pixel, a sixth sub-pixel, and a seventh sub-pixel adjacent to each other;
• wherein the second sub-pixel, the fourth sub-pixel and the sixth sub-pixel are green sub-pixels, the first sub-pixel and the fifth sub-pixel are red sub-pixels, and the third sub-pixel and the seventh sub-pixel are blue sub-pixels;
• wherein in the first display sub-area, a light-emitting area of the second sub-pixel is smaller than a light-emitting area of the first sub-pixel, and a light-emitting area of the fourth sub-pixel is smaller than a light-emitting area of the third sub-pixel;
• and
• wherein a light-emitting area of the fifth sub-pixel in the second display sub-area is larger than the light-emitting area of the first sub-pixel in the first display sub-area;
• wherein the plurality of third pixel elements are arranged in a checkerboard pattern in the second display sub-area;
• wherein in the first display sub-area, the first pixel elements and the second pixel elements are arranged alternately in a column direction, and the first pixel elements and the second pixel elements are arranged alternately in a row direction;
• and,
• for the first pixel element and the second pixel element arranged adjacent to each other in a same row, a distance between the second sub-pixel in the first pixel element and the fourth sub-pixel in the second pixel element is greater than a distance between the first sub-pixel in the first pixel element and the third sub-pixel in the second pixel element.