Patent ID: 7564451

Claim:
An organic light emitting device driver for driving an organic light emitting device including a plurality of unit pixels each of which includes an organic light emitting element, the organic light emitting device driver comprising: a discharge unit for generating a discharge current during a discharge period to thereby discharge a charge charged in the unit pixel, wherein the discharge unit includes: a switching unit for transferring a reference current in response to a predetermined voltage supplied to the unit pixel; and a current mirroring unit for outputting the discharge current generated by mirroring the reference current transferred by the switching unit, wherein the current mirroring unit includes: a first MOS transistor which is diode connected, a gate and one terminal of the first MOS transistor receiving the reference current and the other terminal of the first MOS transistor being coupled to a ground voltage; and a second MOS transistor for outputting the discharge current to the ground voltage, wherein a gate and one terminal of the second MOS transistor are respectively coupled to the gate of the first MOS transistor and the unit pixel and the other terminal of the second MOS transistor is coupled to the ground voltage.