BLUE COLOR COMPOSITION FOR COLOR FILTER, COLOR FILTER, AND COLOR IMAGE DISPLAY DEVICE

摘要

There are provided a blue color composition for color filter, a color filter, and a color image display device capable of realizing an image of high purity. A color image display device is formed by a combination of an optic shutter, a color filter having at least three color elements: red, green, and blue corresponding to the optic shutter, and a backlight for transmission lighting. The backlight includes an LED in its structure. When the wavelength of the visible light range 380 to 780 nm for each 5 nm is lambdannm, the spectral transmittance (%) at the wavelength lambdannm by the red color pixel of the color filter is T<R>(lambdan), and the relative light emission intensity normalized by the entire light emission intensity at the wavelength lambdannm from the backlight is I(lambdan), these satisfy the condition (1) as follows: I(620 - 680) x T<R>(620 - 680) >= 1.1 ......(1)