Patent ID: 7414599

Claim:
A pixel circuit in an organic light emitting device, comprising: a first transistor for delivering a data signal voltage in response to a current scan line signal; a second transistor for generating a driving current depending on the data signal voltage delivered through the first transistor; a third transistor for detecting and self-compensating threshold voltage deviation in the second transistor; a fifth transistor for providing a power supply voltage for the second transistor in response to a current light-emitting signal; a sixth transistor which is coupled in series between the second transistor and an electroluminescent element and for providing the driving current for the electroluminescent element through the second transistor in response to the current light-emitting signal; and a capacitor for storing the data signal voltage delivered to the second transistor, wherein the electroluminescent element emitts light corresponding to the driving current generated through the second transistor.