Toppan Printing Co., Ltd.

Sohei Kadota

Koichi Minato

Mie Shimizu

Hidesato Hagiwara

Yasuhiro Hibayashi

Disclosed is a liquid crystal display device including a liquid crystal cell provided with a color filter, a pair of polarizing plates arranged on both outside surfaces of the liquid crystal cell, and an optical compensation layer disposed inside of each polarizing plate, wherein, when a chromaticity (u, v) represented in CIE1960 color system is measured in a black state of the liquid crystal display device, a color difference &#x394;uv given by equation (1) described below is 0.02 or less in an range of 0&#x3c;&#x3b8;&#x2266;60:&#x394;(&#x22a5;)&#x2212;(&#x3b8;)}(&#x22a5;)&#x2212;(&#x3b8;)}]&#x2003;&#x2003;(1)wherein (u(&#x22a5;), v(&#x22a5;)) is chromaticity as viewed from a vertical direction and (u(&#x3b8;), v(&#x3b8;)) is chromaticity as viewed from a direction inclined at an angle of &#x3b8; degrees with a direction of a normal line of a display surface.

Color filter and liquid crystal display device

A coloring composition for a color filter includes a transparent resin, an organic pigment dispersed in the transparent resin, and a retardation-regulating agent dispersed in the transparent resin and containing a compound which is capable of increasing retardation in the thickness direction to minimize the difference in retardation among colored pixels. A color filter having colored pixels formed on a transparent substrate uses this coloring composition. A liquid crystal display device using this color filter may have improved black image quality and contrast.

Color filter having a retardation-regulating agent, coloring composition for a color filter, and liquid crystal display device having a color filter

A coloring composition for a color filter, which includes a transparent resin, an organic pigment dispersed in the transparent resin, and a retardation-regulating agent containing a compound which is capable of increasing a retardation. A color filter which is provided with colored pixels formed on a transparent substrate by using this coloring composition. A liquid crystal display device which is provided with this color filter.

Growing community of inventors

Tokyo, Japan

Sohei Kadota