Patent ID: 7545395

Claim:
A color image display device, comprising: a display panel including pixel regions and a color filter, the color filter including, in each pixel region: a red filter region and a cyan filter region arranged adjacent to each other in a first direction and parallel to each other in a second direction, a green filter region and a magenta filter region arranged adjacent to each other in the first direction and parallel to each other in the second direction, a blue filter region and a yellow filter region arranged adjacent to each other in the first direction and parallel to each other in the second direction, and a color calculating unit for, based on an RGB input signal from an external source, generating six color output signals including a red output signal, a green output signal, a blue output signal, a yellow output signal, a magenta output signal, and a cyan output signal; and a control unit for, based on the six color output signals, controlling the display panel, at the red filter region, the green filter region, the blue filter region, the yellow filter region, the magenta filter region, and the cyan filter region, to display an image corresponding to the RGB input signal, wherein the color calculating unit is configured to: generate the yellow output signal by performing a logical AND operation on a red input signal and a green input signal included in the RGB input signal; generate the magenta output signal by performing a logical AND operation on the red input signal and a blue input signal included in the RGB input signal; and generate the cyan output signal by performing a logical AND operation on the green input signal and the blue input signal included in the RGB input signal, and generate the red output signal, the green output signal, and the blue output signal using the following relationships: Rout= b {Sr−a (Yout+Mout)}; Gout= b {Sg−a (Yout+Cout)}; Bout= b {Sb−a (Mout+Cout)}; wherein Sr is the red input signal, Sg is the green input signal, Sb is the blue input signal, Rout is the red output signal, Gout is the green output signal, Bout is the blue output signal, Yout is the yellow output signal, Cout is the cyan output signal, Mout is the magenta output signal, and a and b are coefficients of an intensity component of the six color output signals.