Keio University

Japan Science and Technology Agency

Toyo Boseki Kabushiki Kaisha

Toyobo Co., Ltd.

Aventis Research & Technologies Gmbh & Co Kg

Nittoh Inc.

Akihiro Tagaya

Yasuhiro Koike

Yoshiyuki Okamoto

Keiichi Mochizuki

Takashi Iwamoto

Yuan Liu

Kazumasa Osumi

Hironobu Yamamoto

The present invention provides a liquid crystal display method capable of, when a screen thereof is observed through a polarizer such as sunglasses, ensuring an excellent visibility regardless of the angle of observation. In a liquid crystal display device at least having a backlight light source, a liquid crystal cell, and a polarizer disposed on a viewing side of the liquid crystal cell, a white light-emitting diode is used as the backlight light source; and a polymer film having a retardation of from 3,000 nm to 30,000 nm is used so as to be disposed on the viewing side of the polarizer so that an angle between an absorption axis of the polarizer and a slow axis of the polymer film becomes about 45 degrees.

Method for improving visibility of liquid crystal display device, and liquid crystal display device using the same

Method for improving visibility of liquid crystal display device, and liquid crystal display device using same

Provided is an illumination module capable of preventing a light exit surface from being darker along peripheral edge portions as though having borders. An illumination module () includes: a light guiding plate (), which has an end surface () and a first principal surface (); a light source () configured to emit light that enters the end surface (); and a diffusion plate (), which has alight incident surface () and a light exit surface (). The diffusion plate () includes a protruding part (), which protrudes toward the light guiding plate () side and the light source (), which is positioned so as to face a peripheral edge portion () on the end surface () side of the light guiding plate (), and which has a light incident surface () into which light exiting the peripheral edge portion () enters.

Illumination module

A copolymer of (meth)acrylic ester represented by a general formula (1) including a following repeating unit A and repeating unit B. In the general formula (1), Rand Reach independently represent hydrogen atom or methyl group; Rrepresents an alkyl group having 1 to 4 carbon atoms; Y represents an atomic group forming an aromatic ring; x represents 1 to n, n represents the number of fluorine atoms which can be contained in the aromatic ring; and a and b each independently represent an integer of 1 or more. 

Copolymer of (meth)acrylic ester, composition, optical element and electric member

A highly sensitive optical sensor in a simple structure for detecting a chemical substance dissolved or dispersed in water is provided. The optical sensor (,) comprises a detecting element (,) having a polymer thin film, a light source unit (,) for emitting light for irradiating the polymer thin film, and a photodetector (,) for detecting the intensity of light reflected from the polymer thin film. The detecting element (,), the light source unit (,), and the photo-detector (,) are integrally mounted in a housing. The polymer thin film is formed on a highly reflective substrate or an optically transparent substrate so as to interact with a chemical substance dissolved or dispersed in water flowing through a water channel (,).

Optical sensor for detecting chemical substances dissolved or dispersed in water

Growing community of inventors

Yokohama, Japan

Akihiro Tagaya