Display substrate and preparation method thereof, and display device

A display substrate, comprising a display region and a non-display region, the display substrate comprising:

• a substrate, and a drive structure layer and a light-emitting structure layer that are stacked on the substrate and located in the display region, the display substrate further comprising:
• M rows of scanning signal lines and M rows of light-emitting signal lines;
• wherein the light-emitting structure layer comprises:
• M rows and N columns of light-emitting structures, the drive structure layer comprises a pixel circuit array and a drive circuit array that extend in a column direction, and the pixel circuit array and the drive circuit array are arranged in a row direction;
• wherein the pixel circuit array comprises:
• M rows and N columns of pixel circuits, the pixel circuits are in one-to-one correspondence with the light-emitting structures and electrically connected to corresponding light-emitting structures, and an ith row of pixel circuits are electrically connected to an ith row of scanning signal line and an ith row of light-emitting signal line, where 1≤i≤M;
• and
• the drive circuit array comprises:
• at least one scanning drive circuit and at least one light-emitting drive circuit, the scanning drive circuit is arranged to provide a drive signal to a scanning signal line, and the light-emitting drive circuit is arranged to provide a drive signal to a light-emitting signal line.