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:
Oct. 03, 2000
Filed:
Feb. 12, 1999
Applicant:
Inventors:
Assignee:
Mitsubishi Gas Chemical Company, Inc., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09K / ; C09K / ; C07C / ;
U.S. Cl.
CPC ...
349182 ; 25229965 ; 560 65 ; 560 73 ;
Abstract
A ferrielectric liquid crystal compound of the general formula (1), ##STR1## wherein R is a linear alkyl group having 6 to 12 carbon atoms, either each of X and Y is a hydrogen atom or one of X and Y is a hydrogen atom and the other is a fluorine atom, m is an integer of 1 to 2, n is 1 and C* is an asymmetric carbon. The above liquid crystal compound shows a ferrielectric phase in a wide temperature range and exhibits a fast response in spite of its small spontaneous polarization, and it is therefore remarkably useful for an active-matrix liquid crystal display device.