Patent ID: 8963441
Filing Date: 2015-02-24
Classification: G09G,H05B,Y02B

Abstract:
1. A pixel unit driving circuit of an Active Matrix Organic Light Emitting Diode AMOLED panel, for driving an Organic Light-Emitting Diode, comprising: a switching unit, a first input terminal of which is connected to a current source for providing a charging current, a second input terminal of which is connected to the Organic Light-Emitting Diode, and an output terminal of which is connected to a first terminal of a storage capacitor to provide the charging current; the storage capacitor, a first terminal of which is connected to the output terminal of the switching unit, and a second terminal of which is connected to a low level; a driving Thin Film Transistor and a current mirror Thin Film Transistor, gates of which are connected to the first terminal of the storage capacitor, and sources of which are connected to the low level; a voltage-dividing Thin Film Transistor, a gate of which is connected to the first terminal of the storage capacitor, a source of which is connected to a drain of the driving Thin Film Transistor, and a drain of which is connected to the Organic Light-Emitting Diode; wherein the switching unit turns on a path from the first input terminal to the drain of the current mirror Thin Film Transistor and a path from a second input terminal to the drain of the driving Thin Film Transistor, and turns off a path from the first input terminal to the drain of the driving Thin Film Transistor and a path from a second input terminal to the drain of the current mirror Thin Film Transistor, during a fist time period; and the switching unit also turns off the paths from the first input terminal to the drain of the current mirror Thin Film Transistor and the drain of the driving Thin Film Transistor, and the paths from the second input terminal to the drain of the current mirror Thin Film Transistor and the drain of the driving Thin Film Transistor, during a second time period.