To provide a liquid crystal display device, in which the quality of a screen is dramatically improved, by making the supply of current being applied to gate driver ICs constant to thereby reduce a voltage drop, when signal lines that drive gate driver ICs are formed within a panel and correcting voltage distortion, to thereby reduce voltage differences among the gate driver ICs.

The liquid crystal display includes a gate drive power supply unit which supplies analog signals, a control circuit unit which applies control signals to the analog signals outputted by the gate drive power supply unit, a correction circuit unit which is applied with a control signal from the control circuit unit to correct the waveforms of the analog signals outputted from the gate drive power supply unit into a sawtooth type and a correction power supply unit which supplies the sawtooth waveform type signals corrected in the correction circuit unit to the gate driver ICs.