Dai Nippon Printing Co., Ltd.

Hidetoshi Ozawa

Yoshinori Kinase

Atsushi Baba

Tadafumi Shindo

Tisato Kajiyama

Naoki Shimada

Wataru Saito

Yoshitaka Goto

Norihiro Kaiya

Yasuhiro Imamura

A record display medium that can display a high contrast image and is less likely to cause a lowering of contrast or disappearance of the displayed image even in low temperature and high temperature regions. The record display medium has a conductive substrate and a liquid crystal/polymer composite film provided on the conductive substrate. The liquid crystal/polymer composite film includes a smectic liquid and a dichroic dye dispersed in a polymer matrix. The liquid crystal contains a liquid crystal mixture having a specific composition and the dichroic dye is a black dichroic dye formed of a mixture of dichroic azo dyes.

Record display medium and use thereof

A record display medium is provided which can offer a high display contrast and is less likely to cause a lowering of contrast or disappearance of display even in low temperature and high temperature regions. A polymeric material for a liquid crystal/polymer composite film comprising a liquid crystal present in a polymer matrix, a liquid crystal/polymer composite film using the material, and use of the record display medium are also provided. The polymeric material for a liquid crystal/polymer composite film comprising a liquid crystal present in a polymer matrix has a glass transition temperature of 150.degree. C. or above and is insoluble in water.

Polymeric material for liquid crystal/polymer composite film, record

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Tokyo-To, Japan

Hidetoshi Ozawa