Patent ID: 8018414

Claim:
An active matrix organic light emitting diode (OLED) pixel unit, comprising: a first switch, having its first end receiving a data signal, its second end coupled to a first node and its control end receiving a first scan signal; a second switch, having its first end coupled to the first node, a second end coupled to a second node and a control end receiving a second scan signal; a first transistor, having its first end coupled to the first node, a second end directly connected to a fourth node and a control end coupled to the first node; a second transistor, having its first end coupled to a third node, a second end directly connected to the fourth node and a control end coupled to the second node; an OLED, connected between the third node and a fifth node coupled to a positive voltage or a ground; and an energy storage device, coupled between the second node and the fifth node, wherein the OLED is coupled between the second transistor and the energy storage device.