Display substrate and display device

(canceled)

A display device, comprising a display substrate, wherein the display substrate comprises a base substrate and a plurality of sub-pixels arranged on the base substrate, wherein the sub-pixel comprises a sub-pixel driving circuit and a light-emitting element, the light-emitting element comprises an anode pattern, and the anode pattern is coupled to the sub-pixel driving circuit;

• wherein the display substrate further comprises a plurality of pixel definition patterns, wherein at least one pixel definition pattern in the plurality of pixel definition patterns comprises at least one pixel aperture, at least a portion of the light-emitting element is located in the pixel aperture, an orthographic projection of the at least one pixel definition pattern onto the base substrate covers at least a portion of an orthographic projection of the sub-pixel driving circuit onto the base substrate, and covers at least a portion of an orthographic projection of a gap between at least two adjacent sub-pixel driving circuits onto the base substrate, and the plurality of pixel definition patterns are configured to shield light;
• wherein the display device further comprises a photosensitive sensor, the photosensitive sensor is located at a non-displaying side of the display substrate and at least a portion of the photosensitive sensor is located in the second display region.