Patent ID: 8896514

Claim:
A display device, comprising: a display panel displaying a still image and a moving image; and a signal controller controlling signals to drive the display panel, wherein the signal controller includes a frame memory storing image data of the still image and providing the image data to the display panel, and the display panel is driven with a first scan ratio when displaying the moving image and is driven with a second scan ratio that is lower than the first scan ratio when displaying the still image, wherein the display panel includes a gate line and a data line, the display device further includes a gate drive driving the gate line, and a data driver driving the data line, and the signal controller transmits a scanning start (STV) signal and a gate clock (CPV) signal to the gate driver, wherein the signal controller controls a width of the CPV signal to be the same when the display panel is driven with the first scan ratio and the second scan ratio, wherein the signal controller controls the width of the CPV signal to have the same width as a clock signal of n pulses when the display panel is driven with the first scan ratio, and the width of the CPV signal to have the same width as a clock signal of m pulses, which is less than the n pulses, when the display panel is driven with the second scan ratio, wherein n and m are integers greater than 0.