A liquid crystal display with improved display quality and a method of driving the same include a timing controller (500) which receives a main clock signal and outputs a first clock generation control signal and a second clock generation control signal which has a variable duty ratio, a clock generator (600) which receives the first clock generation control signal and the second clock generationcontrol signal and outputs a first clock signal and a second clock signal which have variable duty ratios and opposite phases, a gate driver (400) which receives the first clock signal and the secondclock signal and outputs gate signals which have variable duty ratios, and a liquid crystal panel (300) including a plurality of pixels which are turned on according to the gate signals and display an image.