Patent ID: 7391486

Claim:
A color image display method for a field sequential liquid crystal display device that includes a liquid crystal panel having an upper substrate, a lower substrate, a liquid crystal layer therebetween, and a plurality of pixels; a backlight device under the liquid crystal panel for irradiating light to the liquid crystal panel and having Red, Green and Blue light sources; and an image signal processor controlling a sequential lighting order and combination of the Red, Green and Blue light sources, the method comprising the steps of: dividing one frame into first, second and third subframes, wherein each subframe has a period of approximately one-third of one frame period; applying an image signal to each pixel of the liquid crystal panel through the image signal processor; and lighting at least two of the Red, Green and Blue light sources at each subframe through the image signal processor by way of controlling the lighting order and the combination of the Red, Green and Blue light sources, wherein the combination of the Red (R), Green (G), and Blue (B) light sources turned on each subframe is one of sequential combinations consisting of B+G, R+B and R+G to display Cyan (C), Magenta (M) and Yellow (Y) colors, respectively, when the displayed image requires a higher brightness.