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:
Feb. 15, 2005
Filed:
Aug. 10, 2001
Akitaka Yajima, Tatsuno-machi, JP;
Mutsuya Furuhata, Hata-machi, JP;
Hisashi Iechika, Shiojiri, JP;
Toshio Matsumiya, Matsumoto, JP;
Akitaka Yajima, Tatsuno-machi, JP;
Mutsuya Furuhata, Hata-machi, JP;
Hisashi Iechika, Shiojiri, JP;
Toshio Matsumiya, Matsumoto, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
The invention provides a liquid crystal light valve that makes it possible to increase the life of a polarizer at a light-exiting-surface side of the liquid crystal light valve by reducing the burden thereon, and a projection display device that incorporates the liquid crystal light valve. In liquid crystal light valves that modulate incident light in accordance with image information, at least two corresponding polarizers are provided respectively at the light-exiting-surface sides of liquid crystal panels.