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:
Jul. 19, 1994
Filed:
May. 25, 1993
Applicant:
Inventors:
Assignee:
Showa Shell Sekiyu Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09K / ; C09K / ; C07C / ;
U.S. Cl.
CPC ...
25229962 ; 25229901 ; 25229967 ; 560 59 ; 560 63 ; 560 65 ; 560 86 ; 560 89 ; 560100 ;
Abstract
Disclosed are novel liquid crystal compounds containing a naphthalene ring, having an excellent light leaking ratio at tristable states, and represented by the following formula: ##STR1## wherein R.sub.1 is a C.sub.6 -C.sub.16 linear alkyl group or C.sub.6 -C.sub.16 linear alkoxy group, R.sub.2 is a C.sub.4 -C.sub.12 linear alkyl group, R.sub.3 is a C.sub.1 -C.sub.3 alkyl group or C.sub.1 -C.sub.3 haloalkyl group, and C having an asterisk indicates an asymmetric atom. The liquid crystal compounds are expected to find their applications in electrooptical devices and liquid crystal displays utilizing a S*.sub.(3) liquid crystal phase which shows tristable states.