Patent ID: 7773065
Filing Date: 2010-08-10
Classification: G02F,G09G

Abstract:
1. A liquid crystal display comprising: a liquid crystal panel; a panel driving portion for driving the liquid crystal panel; a light source provided on a back surface of the liquid crystal panel; and a light source driving portion for driving the light source in such a manner that a black insertion period during which the light source is turned OFF and a light-ON period during which the light source is turned ON are provided within one vertical period and PWM-driving the light source so as to be turned ON and turned OFF repetitively during the light-ON period, wherein: the light source includes M light sources provided, respectively, in divided regions obtained by dividing the liquid crystal panel by M in a vertical direction; and the light source driving portion drives the M light sources in such a manner that the black insertion period and the light-ON period are provided within the one vertical period while being delayed by a 1/M cycle of a vertical synchronization signal with respect to one to another, and PWM-drives the M light sources so as to be turned ON and turned OFF repetitively during the light-ON period.