A novel large area color LCD backlight system

The authors describe a field sequential color system in which video information for each primary color is loaded into the liquid crystal array, one complete color field at a time. The liquid crystal cells will synchronously modulate the light from a corresponding temporally sequenced three-color light source. With a high enough sequencing rate, a view can see a full color image with a color gamut that is limited by the chromaticity coordinates of the three-color light sources. There is no light attenuation resulting from the presence of a filter, and each picture element corresponds to a single liquid crystal cell instead of a group of three or more cells which form a color filter pixel. This display thus features much higher brightness and resolution than a color filter liquid crystal display for a given power input and display size. Experiments on this novel concept are described