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:
Jan. 12, 1993
Filed:
Apr. 10, 1991
Applicant:
Inventors:
Takamasa Harada, Inzai, JP;
Norbert Rosch, Frankfurt am Main, DE;
Peter Wegener, Konigstein/Taunus, DE;
Assignee:
Hoechst Aktiengesellschaft, Frankfurt am Main, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C09K / ; C09K / ; C09K / ; C09K / ;
U.S. Cl.
CPC ...
2522996 ; 25229901 ; 25229961 ; 25229963 ; 2522992 ; 25229964 ; 25229965 ; 25229966 ; 25229967 ; 2522995 ;
Abstract
A liquid crystal mixture composed of at least two components containing as one component a macrocyclic compound of the general formula (1) ##STR1## in which a, b, c, d, e, f, independently of one another, are an integer from zero to 4, a+b+c+d+e+f being greater than 7, and --A--, --B--, --C--, --D--, --E--, --F--, identical or different, are, for example, --CH.sub.2 --, --CH.dbd.CH--, --CO-- or --COO--, leads in FLC displays to the formation of a uniform alignment and avoids twist states, which is reflected in a significantly improved contrast.