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. 16, 1997
Filed:
May. 29, 1996
Applicant:
Inventor:
Yoshihiro Furuta, Kobe, JP;
Assignee:
Sanyo Electric Co., Ltd., Osaka, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02F / ; G02F / ; G02F / ;
U.S. Cl.
CPC ...
349 13 ; 349 15 ; 349 33 ; 349180 ;
Abstract
A liquid crystal shutter has a liquid crystal layer which is made of a liquid crystal material prepared from a nematic liquid crystal. The ratio d/p of the thickness d of the liquid crystal layer to the chiral pitch p of the liquid crystal material and a twist angle .theta. which is set by a pair of alignment layers for liquid crystal molecules of the liquid crystal layer satisfy the relation of .theta./360.degree.<d/p.