Patent ID: 8194012

Claim:
A pixel comprising: an organic light emitting diode; a second transistor for controlling an electric current capacity flowing from a first power source to a second power source via the organic light emitting diode; a first capacitor coupled between a gate electrode of the second transistor and a power line or a control line; a first transistor coupled to a scan line and a data line and for turning on, when a scan signal is supplied to the scan line, to supply a data signal, supplied by the data line, to the gate electrode of the second transistor; and a compensation unit for controlling a voltage of the gate electrode of the second transistor to correspond to a degradation of the organic light emitting diode; wherein the compensation unit comprises: first and second feedback capacitors coupled in series between an anode electrode of the organic light emitting diode and the gate electrode of the second transistor; and a third transistor coupled between a common node of the first and second feedback capacitors and a reset power source and for turning on when a control signal is supplied to the control line.