PIXEL CIRCUIT, DISPLAY PANEL AND DRIVING METHOD THEREOF

摘要

A pixel circuit comprises a charging module, a light emitting device and a capacitor. The charging module is connected with a first end of the capacitor and used to charge the capacitor by use of a data signal voltage under the control of a scanning signal; a first end of the light emitting device is connected with the first end of the capacitor, a second end of the light emitting device is connected with a low-level voltage line; a second end of the capacitor is connected with a reference voltage line; the reference voltage line is used to enable the light emitting device to begin emitting light continuously at a moment during the process of gradual rise of a voltage signal until expiration of a frame period, and the moment is related to the value of the data signal voltage. Also provided are a display panel comprising the pixel circuit and a driving method of the display panel. Pulse width modulation driving with identical pixel data refresh frequency and frame frequency is realized, and the problems of high working current and low service life of the light emitting device in pixels are solved; the pixel circuit is low in power consumption, simple in structure and easy to implement.