Toray Industries, Inc.

Shigetaka Kasai

Tetsuo Yamashita

Harushi Nonaka

Masahiro Yoshioka

Hiroyuki Sasaki

Hideyuki Kojima

Ikumi Hada

Ryoji Okuda

Seiji Fukuda

Nana Takeuchi

A polishing pad includes at least a cushion layer and a polishing layer including a groove, on a polishing surface, having side surfaces and a bottom surface, wherein at least one of the side surfaces includes a first side surface that extends continuously to the polishing surface and forms an angle &#x3b1; with the polishing surface, and a second side surface that extends continuously to the first side surface and forms an angle &#x3b2; with a plane parallel to the polishing surface, the angle &#x3b1; is larger than 90 degrees, the angle &#x3b2; is not smaller than 85 degrees, and the angle &#x3b2; is smaller than the angle &#x3b1;, a bending point depth is not less than 0.4 mm and not more than 3.0 mm, and the cushion layer has a distortion constant of not less than 7.3&#xd7;10&#x3bc;m/Pa and not more than 4.4&#xd7;10&#x3bc;m/Pa.

Polishing pad

The present invention provides a color filter comprising a transmission area and reflection area in which at least one color pixel of red, green and blue pixels is formed of the same material, wherein a transparent area having no color layer is formed in a part of the reflection area, at least one sub-area is formed in the transparent area, and the size of the sub-area is 20 &#x3bc;m or more and 2,000 &#x3bc;m or less. The present invention also provides a liquid crystal display for both transmission display and reflection display with a cheap manufacturing cost, wherein the difference of chromaticity between the transmission display and reflection display is small, and the surface of the transmission area and reflection area have small step heights.

Color filter and liquid crystal display device

Growing community of inventors

Tokyo, Japan

Shigetaka Kasai