Display substrate, preparation method therefor, and display apparatus

A display substrate, comprising a drive circuit layer disposed on a substrate and a light emitting structure layer disposed at a side of the drive circuit layer away from the substrate, wherein the drive circuit layer comprises a plurality of circuit units, the light emitting structure layer comprises a plurality of light emitting devices;

• at least one circuit unit comprises a first power supply line, an initial signal line comprising a first initial signal line extending in a first direction and a second initial signal line extending in a second direction, and a pixel drive circuit;
• the first direction is intersected with the second direction, and an orthographic projection of the second initial signal line on the substrate is overlapped at least partially with an orthographic projection of the first power supply line on the substrate,
• wherein the second initial signal line in at least one circuit unit comprises an extension portion and a connection portion connected with each other, the extension portion is extended in the second direction, the connection portion is extended in the first direction,
• wherein an orthographic projection of the extension portion on the substrate is overlapped at least partially with the orthographic projection of the first power supply line on the substrate, and
• wherein the extension portion comprises a first initial portion and a second initial portion connected along the second direction, the first initial portion is parallel to the second direction, the second initial portion is deflected toward an opposite direction of the first direction, the second initial portion has a first included angle with the second direction, and the first included angle is greater than 0° and less than 90°.