Pixel circuit, organic light-emitting display device and driving method thereof

Disclosed is a pixel circuit, an organic light-emitting display device and a driving method thereof. The organic light emitting display device includes: a display panel including a plurality of gate lines, a plurality of data lines crossing the plurality of gate lines, and a plurality of pixels; and a data driver that transmits the data signals to the pixels of the display panel; and a gate driverfor transmitting a plurality of gate signals and a plurality of illumination control signals to pixels of the display panel; a first one of the plurality of pixels is initialized in response to the first gate signal, receives the input first data signal in response to the second gate signal generated after the first gate signal, and is controlled by one illumination control signal to emit light according to the first data signal; a second one of the plurality of pixels is initialized in response to the second gate signal, receives the input second data signal in response to the third gate signal generated after the s