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:
Oct. 02, 2012
Filed:
Sep. 08, 2008
Applicant:
Jianmin Chen, Superior, CO (US);
Inventor:
Jianmin Chen, Superior, CO (US);
Assignee:
RealD Inc., Beverly Hills, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C09K 19/02 (2006.01); G02F 1/1335 (2006.01); G02F 1/13 (2006.01);
U.S. Cl.
CPC ...
Abstract
A super-twist nematic (STN) liquid crystal (LC) light shutter with improved contrast performance, lower power requirements and enhanced off-axis performance. Compensator components may be disposed in front of and, in some cases, behind the liquid crystal cell. In some embodiments, a STN LC cell with a twist angle of 270 degrees may be used. In other embodiments, a STN LC cell with a twist angle ranging between just greater than 270 degrees and 285 degrees may be used. Also disclosed is a system incorporating the various disclosed STN LC shutters.