a gate driving circuit including a first TFT (thin film transistor) receiving a first clock, a second TFT receiving a second clock, and a third TFT receiving a third clock, at least two of the first clock, the second clock and the third clock having a different waveform, at least part of an on level of the first clock overlapping with the second clock and the third clock, at least part of an on level of the second clock partially overlapping with the first clock and the third clock, and at least part of an on level of the third clock partially overlapping with the first clock and the second clock; and

a pixel circuit electrically connected with the gate driving circuit, the pixel circuit including a driving TFT, at least one switching TFT including an oxide TFT, and an OLED (organic light emitting diode).