Patent ID: 8432342

Claim:
A pixel of an organic light emitting display, the pixel comprising: a first transistor comprising: a first electrode coupled to a first power source; a second electrode; and a gate electrode coupled to a first node; a second transistor comprising: a first electrode coupled to a third power source; a second electrode coupled to the first node; and a gate electrode coupled to a reset control line; a third transistor comprising: a first electrode coupled to the first node; a second electrode coupled to a fourth power source; and a gate electrode; a fourth transistor comprising: a first electrode coupled to the gate electrode of the third transistor; a second electrode coupled to a scan line; and a gate electrode coupled to a data line; and an organic light emitting diode (OLED) comprising: an anode electrode coupled to the second electrode of the first transistor; and a cathode electrode coupled to a second power source.