Display substrate and display apparatus

A display substrate, comprising:

• a base substrate and a gate drive circuit disposed on the base substrate, wherein the gate drive circuit comprises multiple stages of shift register circuits, a shift register circuit comprises an oxide output transistor and a plurality of oxide switching transistors;
• the oxide output transistor comprises a first bottom gate layer, a first top gate layer, and an active layer at least partially located between the first bottom gate layer and the first top gate layer;
• an oxide switching transistor comprises a second bottom gate layer, a second top gate layer, and an active layer at least partially located between the second bottom gate layer and the second top gate layer;
• the first bottom gate layer and the second bottom gate layer are independent of each other;
• the first bottom gate layer is coupled with the first top gate layer;
• second bottom gate layers of at least some oxide switching transistors among the plurality of oxide switching transistors are coupled with each other.