The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 20, 1994
Filed:
May. 05, 1993
Mitsuhiro Koden, Nara, JP;
Tomoaki Kuratate, Nara, JP;
Fumiaki Funada, Yamatokoriyama, JP;
Kazuhiko Sakaguchi, Toyonaka, JP;
Yoshikazu Takehira, Itami, JP;
Yutaka Shiomi, Amagasaki, JP;
Tohru Kitamura, Kyoto, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Daiso Co., Ltd., Osaka, JP;
Abstract
A ferroelectric liquid crystal device having a pair of substrates each provided with voltage application means, an orientation control layer formed on at least one of the substrates, and a layer of ferroelectric liquid crystal composition formed between the pair of substrates, the device being characterized in that the ferroelectric liquid crystal composition comprises at least one compound (a) having an optically active group of the formula (I): ##STR1## and at least one compound (b) which is reverse to the compound (a) in the direction of a helical pitch induced in a nematic phase, the liquid crystal composition exhibiting at least a smectic C phase, smectic A phase and nematic phase at least 20 .mu.m in helical pitch.