A power management integrated circuit includes a flip-flop circuit configured to perform a logic operation on a start clock signal which sets a driving start time point of a gate driving circuit and an on-clock signal which sets an output start time point of the gate driving circuit; a first AND gate circuit configured to receive one among output signals of the flip-flop circuit and the start clock signal, to perform an AND logic operation thereon, and to generate a gate start signal; and a second AND gate circuit configured to receive the other of the output signals of the flip-flop circuit and the start clock signal, to perform an AND logic operation thereon, and to generate a gate reset signal.