Display substrate and display device

The utility model discloses a display substrate and a display device. The display substrate comprises a driving structure layer and a light-emitting structure layer, the driving structure layer comprises a first pixel driving circuit, a second pixel driving circuit and a third pixel driving circuit, the light-emitting structure layer comprises a first light-emitting device, a second light-emitting device and a third light-emitting device, the first light-emitting device is connected with the first pixel driving circuit, and the second light-emitting device is connected with the third pixel driving circuit. The second light-emitting device is connected with the second pixel driving circuit, and the third light-emitting device is connected with the third pixel driving circuit; the driving structure layer further comprises a first power line, a second power line, a third power line and a connecting line, the first power line is connected with the first pixel driving circuit, the second power line is connected with the second pixel driving circuit, and the third power line is connected with the third pixel driving circuit; the connecting line is connected with the first power line, the second power line or the third power line, and a grid communication structure for transmitting power signals is formed on the display substrate. The power consumption is effectively reduced.