A pixel circuit and a driving method and a display device

The present application discloses a pixel circuit, comprising: a first capacitor, a second capacitor, a second transistor, a third transistor and a light emitting coupled between the first common branch electrode and the second common electrode. A first branch comprising a light emitting transistors in series, the fourth transistor and the light emitting element; a second electrode coupled to a first electrode of the first transistor to the fourth transistor, the third node coupled to the node; fourth transistor control input a second scan control signal, the fourth transistor in response to a second control signal for switching scanning branch on and off the light emitting state. In the programming phase, the threshold voltage of the first input transistor via a third transistor to the first node and stored; emission phase, the driving device generates a driving current driven light emitting light according to a pressure difference across the first capacitor. The pixel circuits capable of compensating the threshold voltage of the first transistor and the light emitting device displacement. The present application also discloses a method of driving the display based on the pixel circuits and a device.