Pixel circuit and method for driving a light emitting device and organic light emitting display panel

Abstract

There are provided a pixel circuit, a method for driving the light emitting device () and an organic light emitting display panel. The initializing module () is added to the pixel circuit. In the initializing phase, the initializing module () initializes the driving module () and the light emitting device (); in the writing phase, the charging module () writes the data signal inputted from the data signal terminal into the control terminal of the driving module (); and in the light emitting phase, the charging module () loads the first reference signal inputted from the data signal terminal (Data) to the control terminal of the driving module (), and the initializing module () connects the output terminal of the driving module () with the input terminal of the light emitting device () so that the driving module () drives the light emitting device () to emit light. The pixel circuit initializes the driving module () and the light emitting device () in the initialization phase, which eliminates the influence of the voltage difference in a previous phase on a subsequent phase, provides a compensating voltage and a driving voltage for the driving module () in the writing phase, which avoids the influence of change of the threshold voltage on the light emitting luminance of the light emitting device (), so that the quality of the display picture is ensured.