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:
Mar. 07, 1995
Filed:
Feb. 10, 1993
Applicant:
Inventors:
Hitoshi Suenaga, Itami, JP;
Masaaki Taguchi, Tokyo, JP;
Assignees:
Seiko Instruments Inc., both of, JP;
Teikoku Chemical Industry Co., Ltd., both of, JP;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C09K / ; C09K / ; G02F / ;
U.S. Cl.
CPC ...
25229961 ; 25229901 ; 25229966 ; 359103 ; 359104 ;
Abstract
A ferroelectric liquid crystal electro-optical device comprises a pair of plates having driving electrodes and ferroelectric liquid crystal material having a negative dielectric anisotropy. The ferroelectric liquid crystal material comprises a ferroelectric liquid crystal composition 10 to 80% by weight of a compound of the general formula: ##STR1## wherein R.sub.1 represents a straight-chain alkyl or alkoxy group, or an alkyl, alkoxy, alkoxyalkyl or acyloxy group each having an asymmetric carbon atom, and R.sub.2 represents a straight-chain alkyl group having an assymmetric carbon.