Mitsubishi Chemical Corporation

Shin Kawana

Naoto Kijima

Hideaki Kaneda

Shingo Ikeda

Naoki Sako

Toshiyuki Urano

Ryuichiro Takasaki

Takayuki Hisamune

Etsuko Hino

Fumiyuki Matsuo

Noriko Endou

Yasuyuki Taniguchi

Takeshi Ohmori

Reiji Ootsuka

Koji Mori

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&#x2267;&#x2212;0.38 W+51 (wherein W&#x2267;87).

Color image display device

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 M, element A, element D, element E and element X, where Mis 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 M, 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.

Blue color composition for color filter, color filter, and color image display device

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.

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.

Color liquid crystal display devices

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.

Color filter and black resist composition

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.

Growing community of inventors

Yokohama, Japan

Shin Kawana