Patent ID: 8111218

Claim:
A pixel, comprising: an organic light emitting diode; a drive transistor configured to supply an electric current to the organic light emitting diode; a pixel circuit configured to compensate a threshold voltage of the drive transistor, the pixel circuit includes a storage capacitor and is configured to diode-connect the drive transistor when a low scan signal is supplied to charge the storage capacitor with a voltage corresponding to a data signal and the threshold voltage of the drive transistor; and a compensator configured to control a voltage of a gate electrode of the drive transistor to compensate for a degradation of the organic light emitting diode, wherein the compensator includes a feedback capacitor having a first terminal coupled with the gate electrode of the drive transistor and a second terminal coupled to a common node of a first compensator transistor and a second compensator transistor, the first compensator transistor and the second compensator transistor between a voltage source and an anode electrode of the organic light emitting diode, and the compensator is configured to maintain the second terminal of the feedback capacitor at a threshold voltage of the organic light emitting diode while the storage capacitor is charged with the voltage.