Patent ID: 8446344
Filing Date: 2013-05-21
Classification: G09G

Abstract:
1. A pixel of an organic light emitting display, the pixel comprising: an organic light emitting diode; a pixel circuit comprising a drive transistor for controlling an amount of electric current that flows from a first power source to a second power source via the organic light emitting diode; and a compensation unit between a gate electrode of the drive transistor and a first electrode of the drive transistor for controlling a voltage at the gate electrode of the drive transistor to correspond to the deterioration of the organic light emitting diode, wherein the compensation unit comprises a compensation transistor and a first capacitor coupled in series between the gate electrode of the drive transistor and the first electrode of the drive transistor, and wherein the compensation transistor is configured to turn off during a period in which a data signal is supplied to the pixel circuit.