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:
Sep. 14, 2004
Filed:
Feb. 19, 2002
Takaaki Tanaka, Matsumoto, JP;
Yasushi Yamazaki, Suwa, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
A liquid crystal device has inorganic alignment layers ( ) disposed on a surface of a liquid crystal layer side of a pair of the substrates, when the range of the average pre-tilt angle &thgr; of liquid crystal molecules of the liquid crystal layer is 5 degrees≦&thgr;≦20 degrees, twist angle &phgr; of the liquid crystal molecules ( ) of the liquid crystal layer, cell gap d, and helical pitch P of the liquid crystal molecules of the liquid crystal layer satisfy the relationship of (0.6/360)&phgr;<d/P<(1.4/360)&phgr;, and when the range of the average pre-tilt angle &thgr; of liquid crystal molecules of the liquid crystal layer is &thgr;>20 degrees, twist angle &phgr; of the liquid crystal molecules ( ) of the liquid crystal layer, cell gap d, and helical pitch P of the liquid crystal molecules of the liquid crystal layer satisfy the relationship of (0.8/360)&phgr;<d/P<(1.6/360)&phgr;.