Abstract: To attain a high color reproducibility as a whole image without impairing the brightness of the entire image. A color image display device comprising a combination of light shutters, a color filter having color elements of at least three colors of red, green and blue corresponding to the light shutters, and a backlight for transmission illumination, wherein a light source to be used for the backlight comprises a combination of a blue or deep blue LED and a phosphor, and the relationship between the NTSC ratio W as a color reproduction range of the color image display element and the light use efficiency Y is represented Y??0.38 W+51 (wherein W?87).

Abstract: The present invention relates to color image display devices having a combination of light shutters, a color filter having color elements of at least three colors of red, green and blue corresponding to the light shutters, and a backlight for transmission illumination, where the backlight has a phosphor layer or a phosphor film, and the phosphor layer or the phosphor film has a compound having at least element M4, element A, element D, element E and element X, where M4 is at least one element selected from Mn, Ce, Pr, Nd, Sm, Eu, Tb, Dy, Ho, Er, Tm and Yb, and includes at least Eu, A is at least one element selected from bivalent metal elements other than the element M4, D is at least one element selected from tetravalent metal elements, E is at least one element selected from trivalent metal elements, and X is at least one element selected from O, N and F.

Abstract: The invention relates to a blue composition for a color filter to realize an image having a high color purity corresponding to the emission wavelength of an improved LED backlight, a color filter and a color image display device.

Abstract: The present invention relates to color image display devices having a combination of light shutters, a color filter having color elements of at least three colors of red, green and blue corresponding to the light shutters, and a backlight for transmission illumination, where the backlight has a phosphor layer or a phosphor film, and the phosphor layer or the phosphor film has a compound having at least element M4, element A, element D, element E and element X, where M4 is at least one element selected from Mn, Ce, Pr, Nd, Sm, Eu, Tb, Dy, Ho, Er, Tm and Yb, and includes at least Eu, A is at least one element selected from bivalent metal elements other than the element M4, D is at least one element selected from tetravalent metal elements, E is at least one element selected from trivalent metal elements, and X is at least one element selected from O, N and F.

Abstract: The invention relates to a blue composition for a color filter to realize an image having a high color purity corresponding to the emission wavelength of an improved LED backlight, a color filter and a color image display device.

Abstract: To attain a high color reproducibility as a whole image without impairing the brightness of the entire image. A color image display device comprising a combination of light shutters, a color filter having color elements of at least three colors of red, green and blue corresponding to the light shutters, and a backlight for transmission illumination, wherein a light source to be used for the backlight comprises a combination of a blue or deep blue LED and a phosphor, and the relationship between the NTSC ratio W as a color reproduction range of the color image display element and the light use efficiency Y is represented Y?0.38W+51 (wherein W?87).

Abstract: To provide a blue composition for a color filter which realizes an image with a high color purity, a color filter and a color image display device. A color image display device comprising a combination of light bulbs, a color filter having color elements of at least three colors of red, green and blue corresponding to the light bulbs, and a backlight for transmission illumination, wherein the backlight contains a LED in its structure, and under the following definitions: ?n nm represents a wavelength at every interval of 5 nm in the visible light range of from 380 to 780 nm; TR(?n) a spectral transmittance (%) at a wavelength ?n nm by a red pixel of the color filter; and I(?n) a relative emission intensity, normalized by a total emission intensity, at a wavelength ?n nm from the backlight, these satisfy the following condition (1): I(620-680)×TR(620-680)?1.

Abstract: The invention relates to a color liquid crystal display device with a combination of light shutters that utilize a liquid crystal, a color filter having color elements of at least three colors of red, green and blue corresponding to the light shutters, and a backlight for transmission illumination.

Abstract: There are provided color liquid crystal display devices with high color purity of NTSC percentage of at least 80%.

Abstract: A color filter having a resin black matrix on a transparent substrate, wherein the resin black matrix has a 20.degree. specular glossiness of from 100 to 200.

Abstract: A photopolymerizable composition for a color filter, which comprises a compound having at least one ethylenically unsaturated double bond, a photopolymerization initiator, and a red, green or blue colorant and which, when formed into a coating film having a dried film thickness of at most 1 .mu.m, has an optical density of at least 1.1.