Pixel circuit and driving method thereof, display substrate and display apparatus

Abstract

A pixel circuit and a driving method thereof, a display substrate and a display apparatus are provided, wherein the pixel circuit includes a first node control sub-circuit, a second node control sub-circuit, a light emitting control sub-circuit and a driving sub-circuit; the working process of the pixel circuit includes: a first initialization stage, a data writing stage, a second initialization stage and a light emitting stage; the second node control sub-circuit is configured to provide the signal of the second initial signal terminal to the fourth node under the control of the second reset signal terminal; the second initialization stage occurs between the data writing stage and the light emitting stage, and the signal of the second reset signal terminal is an effective level signal in the second initialization stage.