Patent ID: 9360704
Filing Date: 2016-06-07
CPC Classification: G02F,G09G

Claim Text:
1. A liquid crystal display device comprising: a light source for monitor use; a liquid crystal layer; a backlight for emitting light to the liquid crystal layer; a light sensor used to detect an intensity of light passing through the liquid crystal layer from the light source for monitor use; a unit configured to determine a timing of the backlight to be turned on or a timing of the backlight to be turned off based on successive comparisons in a single frame period between a luminance threshold value and the intensity of light from the light source for monitor use that is detected by the light sensor; and a unit configured to control the backlight based on the timing of the backlight to be turned on or on the timing of the backlight to be turned off that is determined, wherein the liquid crystal display device is configured so that the backlight is turned on once per frame period or turned off once per frame period according to the timing that is determined.