PIXEL UNIT DRIVE CIRCUIT AND METHOD, PIXEL UNIT, AND DISPLAY APPARATUS

摘要

The present invention provides a driving circuit and a method for a pixel unit, a pixel unit and a display apparatus. The driving circuit for a pixel unit comprises: a driving thin-film transistor, a first switching element, a storage capacitor and a driving control unit; a source of the driving thin-film transistor is connected to a data line via the first switching element; a drain of the driving thin-film transistor is connected to an anode of the OLED and a low level output of the driving power supply respectively via said driving control unit, a source of said driving thin-film transistor is connected to the high level output of the driving power supply, and a gate of the driving thin-film transistor is connected to the drain of the driving thin-film transistor; said driving control unit is used to control said storage capacitor to be charged/discharged so as to control said driving thin-film transistor to operate in a saturation region, so that the threshold voltage Vth of said driving thin-film transistor is compensated by utilizing the gate-source voltage of said driving thin-film transistor. The present invention can address the problems of ununiformity and attenuation of the brightness of OLED panel.