Patent ID: 8614657

Claim:
An organic light emitting display device, comprising: a display unit comprising pixels coupled to scan lines and data lines; control lines coupled to the pixels; a control line driver configured to supply control signals to the pixels through the control lines; a first power driver configured to apply first power, which changes between a first low level and a first high level, to the pixels; and a second power driver configured to apply second power, which changes between a second low level and a second high level, to the pixels, wherein each of the pixels comprises: an organic light emitting diode; a driving transistor configured to control an amount of current supplied to the organic light emitting diode; an initializing transistor coupled to an anode electrode of the organic light emitting diode and configured to be turned on during a reset period in one frame to supply a reset voltage, which is lower than the first high level of the first power, to the anode electrode of the organic light emitting diode; a second capacitor comprising a first terminal and a second terminal, the first terminal being coupled to a gate electrode of the driving transistor; a first transistor coupled between a corresponding data line of the data lines and the second terminal of the second capacitor, and configured to be turned on when a scan signal is supplied to a corresponding scan line of the scan lines; a first capacitor coupled between the second terminal of the second capacitor and the first power driver; and a third transistor coupled between the anode electrode of the organic light emitting diode and the gate electrode of the driving transistor and configured to be turned on when a corresponding one of control signals is supplied to a corresponding control line of the control lines, wherein the initializing transistor is coupled between the anode electrode of the organic light emitting diode and a reset power supply configured to supply the reset voltage, the initializing transistor being configured to be turned on earlier than the third transistor.