Patent ID: 8786591

Claim:
A pixel comprising: an organic light emitting diode (OLED) comprising a cathode electrode coupled to a second power source; a first transistor comprising a gate electrode coupled to and sharing a voltage of a first node for controlling an amount of current that flows from a first power source coupled to a first electrode of the first transistor, to the second power source via the OLED; a second transistor coupled between a data line and the first electrode of the first transistor, and configured to turn on when a scan signal is supplied to an ith (i is a natural number) scan line; a third transistor and a fourth transistor serially coupled between a second electrode of the first transistor and an initializing power source, a first electrode of the third transistor being coupled to the second electrode of the first transistor, a second node being a common node between the third transistor and the fourth transistor and sharing a common voltage between a second electrode of the third transistor and a first electrode of the fourth transistor; and a fifth transistor coupled between the first node and the second node, and configured to electrically disconnect the first node from the second node in a period when the current is supplied to the OLED.