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. 15, 1992
Filed:
Jan. 31, 1992
Applicant:
Inventors:
Assignee:
Showa Shell Sekiyu K.K., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C09K / ; C09K / ; C09K / ; C09K / ; C07D / ;
U.S. Cl.
CPC ...
25229961 ; 25229964 ; 25229965 ; 25229966 ; 25229967 ; 25229901 ; 549375 ;
Abstract
Novel ferroelectric and antiferroelectric liquid crystal compounds of the invention, which comprise those showing optically tristable states in phase S*.sub.(3), have a wide range of phase transition temperature so as to be not only preferably used solely as display element material but also mixed with any other liquid crystal to desiredly expand the above range wider and make optical response time faster. Typical compounds are represented by ##STR1## in which Z means CF.sub.3, C.sub.2 F.sub.5, CHF.sub.2, CH.sub.2 F, CClF.sub.2, CCl.sub.2 F, CF.sub.3 CCl.sub.2 or C.sub.3 F.sub.7, m' and n' are same or different with each other and each is an integer of 1-20.