Patent ID: 7714497

Claim:
A color liquid crystal display apparatus including a transmissive color liquid crystal display panel, having a color filter, and a backlight device for illuminating said color liquid crystal display panel with white light from a backside thereof, said backlight device comprising: a light source made up of light emitting diodes emitting three prime colors, namely a red light emitting diode, emitting red light having a peak wavelength λpr such that 640 nm ≦λpr≦645 nm, a green light emitting diode, emitting green light having a peak wavelength λpg such that 525 nm≦λpg≦530 nm, and a blue light emitting diode, emitting blue light having a peak wavelength λpb such that 440 nm≦λpb≦450 nm, and one or more of complementary color light emitting diodes including at least one of a cyan light emitting diode, emitting cyan light, a yellow light emitting diode, emitting yellow light and a magenta light emitting diode, emitting magenta light; and color mixing means for mixing the color light emitted from said light source to generate white color, wherein, said color filter includes a tristimulus color filter, made up of a red filter, a green filter and a blue filter; said red filter having a peak wavelength Fpr of a transmission wavelength range such that 685 nm≦Fpr≦690 nm, and having zero transmittance for the transmission wavelength range of said blue filter; said green filter having a peak wavelength Fpg of a transmission wavelength range of 530 nm and a half value width Fhwg of said transmission wavelength range such that 80 nm≦Fhwg≦100 nm; said blue filter having a peak wavelength Fpb of a transmission wavelength range such that 440 nm≦Fpb≦460 nm, and said color filter further includes one or more complementary color filters including at least one of a cyan filter of a transmission wavelength range corresponding to cyan light, a yellow filter of a transmission wavelength range corresponding to yellow light and a magenta filter of a transmission wavelength range corresponding to magenta light.