Pixel and organic light emitting display device including pixel

A pixel includes an organic light emitting diode, a first transistor, a second transistor, and a third transistor. The first transistor includes a first electrode, a second electrode, and a gate electrode and may control a current applied to the organic light emitting diode from a first power source, wherein the gate electrode is electrically connected to a first node. The second transistor is electrically connected between the organic light emitting diode and the second electrode of the first transistor and may turn on in response to a first emission control signal. The third transistor is electrically connected between the first power source and the first electrode of the first transistor and may turn on in response to a second emission control signal. The second transistor may turn on two or more times during one frame. The third transistor may turn on exactly once in the one frame.