Patent ID: 9019195
Filing Date: 2015-04-28
Classification: G09G

Abstract:
1. A backlight driving apparatus comprising: a backlight unit comprising a plurality of light sources irradiating light on a liquid crystal display panel which displays an image according to a response of liquid crystal; a backlight driver sequentially turning on the light sources in units of a frame, according to a backlight dimming signal having a duty-on period and a duty-off period; and a backlight controller generating the backlight dimming signal having a frequency equal to or higher than a frequency of a frame sync signal for the liquid crystal display panel, according to external duty-on information, wherein the backlight controller generates the backlight dimming signal having the frequency equal to the frequency of the frame sync signal for the liquid crystal display panel when the duty-on information is less than a predetermined reference duty-on information, and the backlight controller generates the backlight dimming signal having the frequency higher than the frequency of the frame sync signal for the liquid crystal display panel when the duty-on information is equal to or greater than the reference duty-on information.