Display substrate and display device

The invention discloses a display substrate and a display device. The display substrate comprises a plurality of sub-pixels, each sub-pixel comprises a light-emitting element, the light-emitting element comprises a light-emitting area, and the light-emitting element comprises a light-emitting functional layer, a first electrode and a second electrode. An isolation part is arranged between the adjacent sub-pixels, the light-emitting functional layer and the second electrode are disconnected at the edge of the isolation part, and the second electrodes of the adjacent sub-pixels are at least partially and continuously arranged to form a net-shaped path; the net-shaped channel comprises a plurality of channels which are arranged in a crossed mode, at least one channel is a channel which is uneven in width, and the width of the portion, overlapped with the light-emitting area, in the channel is larger than the width of the portion, overlapped with at least part of the position outside the light-emitting area, in t