Patent ID: 7612747

Claim:
A voltage-driven organic light-emitting diode pixel, comprising: an organic light-emitting diode (OLED), having a first terminal and a second terminal; a data writing circuit, electrically coupled to a data line, a sustaining voltage line and a first scan line, the data writing circuit having an output terminal and determining whether to establish an electrical communication between the output terminal and the data line or between the output terminal and the sustaining voltage line according to a first scan signal carried on the first scan line; a capacitor, having a first terminal and a second terminal, the first terminal of the capacitor electrically coupled to the output terminal of the data writing circuit; a first transistor, having first and second signal terminals and a control terminal, the first signal terminal of the first transistor electrically coupled to a first predetermined voltage, the second signal terminal of the first transistor electrically coupled to the first terminal of the OLED, and the control terminal of the first transistor electrically coupled to the second terminal of the capacitor; a second transistor, having first and second signal terminals and a control terminal, the first signal terminal of the second transistor electrically coupled to the control terminal of the first transistor, the second signal terminal of the second transistor electrically coupled to the first terminal of the OLED, and the control terminal of the second transistor configured to receive the first scan signal; a third transistor, having first and second signal terminals and a control terminal, the first signal terminal and the control terminal of the third transistor both electrically coupled to a second scan line, and the second signal terminal of the third transistor electrically coupled to the first signal terminal of the second transistor; and a first switch, having a switch terminal electrically coupled to the second terminal of the OLED, and another switch terminal electrically coupled to a second voltage, the first switch configured to turn on or turn off according to the first scan signal; wherein the first, second and third transistors are of the same type, and scan sequence of the second scan line is arranged before that of the first scan line.