Display substrate and manufacturing method thereof, display panel and display apparatus

A display panel, comprising:

• a display substrate, comprising:
• a base substrate;
• an optical compensation control thin film transistor on a side of the base substrate, the optical compensation control thin film transistor comprising:
• an active layer on the base substrate;
• a gate insulating layer on a side of the active layer facing away from the base substrate;
• a gate on a side of the gate insulating layer facing away from the base substrate;
• an interlayer dielectric layer on a side of the gate facing away from the base substrate;
• and
• a source electrode and a drain electrode on a side of the interlayer dielectric layer facing away from the base substrate;
• a conductor pattern layer on a side of the optical compensation control thin film transistor facing away from the base substrate;
• an optical detecting device on a side of the conductor pattern layer facing away from the base substrate;
• a light shielding layer on the base substrate;
• and
• a buffer layer on a side of the light shielding layer facing away from the base substrate, the optical compensation control thin film transistor being disposed on the buffer layer, and an orthographic projection of the active layer on the base substrate being located within an orthographic projection of the light shielding layer on the base substrate;
• wherein the optical detecting device is electrically connected with the source electrode or the drain electrode through the conductor pattern layer, and an orthographic projection of the optical detecting device on the base substrate and an orthographic projection of the conductor pattern layer on the base substrate are at least partially overlapped.