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. 15, 2002
Filed:
Dec. 13, 1999
Applicant:
Inventors:
Assignee:
Minolta Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09K 1/952 ; F21V 9/00 ;
U.S. Cl.
CPC ...
C09K 1/952 ; F21V 9/00 ;
Abstract
A reflective liquid crystal light modulating device which has a pair of substrates with electrodes thereon, at least one of which is transparent, and a liquid crystal composition which contains nematic liquid crystal and a plurality of chiral agents and exhibits a cholesteric phase in a room temperature between the substrates. The chiral agents include two chiral agents which have mutually opposite helical senses (cause liquid crystal to twist in mutually opposite directions), and the total content of the chiral agents in the liquid crystal composition is 10 to 45 wt %.