DISPLAY SUBSTRATE AND DISPLAY DEVICE

A display substrate and a display device. The display substrate comprises a plurality of sub-pixels 10 and a pixel defining pattern 400. Each sub-pixel 10 comprises a light-emitting element 100 comprising a light-emitting region 101. The light-emitting element 100 comprises a light-emitting functional layer 130, a first electrode 110, and a second electrode 120. The second electrode 120 covers the light-emitting region 101 of each sub-pixel 10. The pixel defining pattern 400 comprises a plurality of first openings 410. One sub-pixel 10 corresponds to at least one first opening 410, the light-emitting element 100 of the sub-pixel 10 is at least partially located in the first opening 410 corresponding to the sub-pixel 10, and the first opening 410 is configured to expose the first electrode 110. The pixel defining pattern 400 further comprises a plurality of second openings 420. The plurality of second openings 420 are located between at least part of the sub-pixels 10. At least one layer of the light-emitting