Backlight device and color liquid crystal display apparatus

A color liquid crystal display apparatus comprising a transmissive color liquid crystal display panel, including a color filter constituted by a tristimulus filter for wavelength-selecting and transmitting red light, green light and blue light, and a backlight device for illuminating said color liquid crystal display panel with white light from a backside thereof, said backlight device including

• a light source, made up by a red light emitting diode emitting red light with a half-value width hwr such that 15 nm≦hwr≦30 nm, a green light emitting diode emitting green light with a half-value width hwg such that 25 nm≦hwg≦50 nm and a blue light emitting diode emitting blue light with a half-value width hwb such that 15 nm≦hwb≦30 nm;
• and
• color mixing means for mixing the red light, green light and blue light emitted by said light source to generate said white light.

A backlight device for illuminating a transmissive color liquid crystal display panel from a backside thereof with white light, said color liquid crystal display panel including a color filter constituted by a tristimulus filter for wavelength-selecting and transmitting red light, green light and blue light, said backlight device comprising:

• a light source made up by a red light emitting diode, a green light emitting diode and a blue light emitting diode, said red light emitting diode emitting red light having a chromaticity point in an xy chromaticity diagram in the XYZ color system as prescribed by the Commission Internationale de l'Eclairage (CIE) such that 0.65≦x≦0.75 and 0.27≦y≦0.33, said green light emitting diode emitting green light having a chromaticity point in said xy chromaticity diagram such that 0.12≦x≦0.28 and 0.64≦y≦0.76 and said blue light emitting blue light having a chromaticity point in said xy chromaticity diagram such that 0.14≦x≦0.17 and 0.01≦y≦0.06;
• and
• color mixing means for mixing the red light, green light and blue light emitted by said light source to generate said white light.

A color liquid crystal display apparatus comprising a transmissive color liquid crystal display panel, and a backlight device for illuminating said color liquid crystal display panel with white light from a backside thereof, said transmissive color liquid crystal display panel including a color filter constituted by a tristimulus filter for wavelength-selecting and transmitting red light, green light and blue light, said backlight device including

• a light source made up by a red light emitting diode, a green light emitting diode and a blue light emitting diode, said red light emitting diode emitting red light having a chromaticity point in an xy chromaticity diagram in the XYZ color system as prescribed by the Commission Internationale de l'Eclairage (CIE) such that 0.65≦x≦0.75 and 0.27≦y≦0.33, said green light emitting diode emitting green light having a chromaticity point in said xy chromaticity diagram such that 0.12≦x≦0.28 and 0.64≦y≦0.76 and said blue light emitting diode emitting blue light having a chromaticity point in said xy chromaticity diagram such that 0.14≦x≦0.17 and 0.01≦y≦0.06;
• and
• color mixing means for mixing the red light, green light and blue light emitted by said light source to generate said white light.