Patent ID: 8111217
Filing Date: 2012-02-07
Classification: G09G

Abstract:
1. A driving circuit for an OLED diode, the driving circuit comprising: a first voltage terminal and a second voltage terminal; an input terminal structured to receive an input voltage signal and an output terminal structured to output a driving current for the OLED diode; a driver transistor having a first conduction terminal coupled to the first voltage terminal, a second conduction terminal coupled to the output terminal, and a control terminal; a first capacitor and a second capacitor, the first capacitor directly connected to the control terminal and an inner circuit node and the second capacitor directly connected to the inner circuit node and the second voltage terminal; a first switch driven by a first select voltage signal and coupled between the input terminal and the inner circuit node; a second switch and a third switch structured to be driven by a second select voltage signal, the second switch coupled between the first conduction terminal and the control terminal of the driver transistor, and the third switch coupled between the inner circuit node and the second voltage terminal and being in parallel with the second capacitor; and a fourth switch driven by a third select voltage signal and inserted between the first voltage terminal and the first conduction terminal of the driver transistor, wherein the second capacitor and the third switch are directly connected to the OLED diode cathode, and the second conduction terminal of the driver transistor is directly connected to the OLED diode anode.