Display substrate and manufacturing method thereof, display device

A display substrate, comprising a base substrate and a plurality of sub-pixels on the base substrate,

• wherein the plurality of sub-pixels are arranged in a plurality of sub-pixel columns in a first direction and a plurality of sub-pixel rows in a second direction, the first direction intersecting with the second direction,
• at least one of the plurality of sub-pixels comprises a first transistor, a second transistor, a third transistor, and a storage capacitor on the base substrate,
• a first electrode of the second transistor is electrically connected to the first capacitor electrode of the storage capacitor and a gate electrode of the first transistor, a second electrode of the second transistor is configured to receive a data signal, a gate electrode of the second transistor is configured to receive a first control signal, and the second transistor is configured to write the data signal to the gate electrode of the first transistor and the storage capacitor in response to the first control signal,
• a first electrode of the first transistor is electrically connected to a second capacitor electrode of the storage capacitor and configured to be electrically connected to a light emitting element, a second electrode of the first transistor is configured to receive a first power voltage, and the first transistor is configured to control a current for driving the light emitting element under control of a voltage of the gate electrode of the first transistor,
• a first electrode of the third transistor is electrically connected with the first electrode of the first transistor and the second capacitor electrode of the storage capacitor, a second electrode of the third transistor is configured to be connected with a detection circuit, a gate electrode of the third transistor is configured to receive a second control signal, and the third transistor is configured to detect an electrical characteristic of the sub-pixel to which the third transistor belongs by the detection circuit in response to the second control signal;
• the first electrode of the third transistor is electrically connected to an active layer of the third transistor through a first via hole, and the first electrode of the third transistor is configured to be electrically connected to the light emitting element through a second via hole;
• the first via hole and the second via hole are at least partially overlapped with each other in a direction perpendicular to the base substrate.