Display substrate and method for manufacturing the same, display device

A display substrate, comprising a base, a plurality of pixel circuits arranged in rows and columns on the base, a plurality of gate lines extending in a row direction, a plurality of power lines extending in a column direction and a plurality of data lines extending in the column direction, one of the data lines and one of the power lines are arranged between any adjacent two columns of pixel circuits, and one of the gate lines is arranged between any adjacent two rows of pixel circuits, each row of pixel circuits are electrically coupled to one of the gate lines, and each column of pixel circuits are electrically coupled to at least one of two power lines at both sides thereof along the row direction,

• each of the pixel circuits comprises a first switching transistor, a driving transistor, a first compensation transistor, a second compensation transistor, and a light emitting device, a gate electrode of the first switching transistor is electrically coupled to the gate line corresponding thereto, a first electrode of the first switching transistor is electrically coupled to the data line corresponding thereto, a second electrode of the first switching transistor is electrically coupled to a first electrode of the driving transistor;
• a second electrode of the driving transistor is electrically coupled to a first electrode of the second compensation transistor, a portion of an active layer between a gate electrode of the second compensation transistor and a gate electrode of the first compensation transistor is made conductive, the gate electrode of the second compensation transistor and the gate electrode of the first compensation transistor are arranged in the same layer as and integrated with the gate line corresponding thereto, a second electrode of the first compensation transistor is electrically coupled to a gate electrode of the driving transistor, the first electrode of the driving transistor is electrically coupled to the power line, the second electrode of the driving transistor is electrically coupled to the light emitting device, and active layers of the first compensation transistor and the second compensation transistor are located on a side of the gate electrodes of the first compensation transistor and the second compensation transistor facing the base;
• each of the pixel circuits further comprises a second capacitor, a first electrode of the second capacitor is formed by the conductive portion of the active layer between the second compensation transistor and the first compensation transistor, a second electrode of the second capacitor is located on a side, facing the base, of the active layer of the first compensation transistor, and the second electrode of the second capacitor is electrically coupled to one of the power lines adjacent thereto through a via hole.