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:
May. 09, 2006
Filed:
Nov. 03, 2003
Shuichi Nakanishi, Tokyo, JP;
Atsushi Kato, Tokyo, JP;
Shuichi Nakanishi, Tokyo, JP;
Atsushi Kato, Tokyo, JP;
NEC Viewtechnology, Ltd., Tokyo, JP;
Abstract
In order to provide a liquid crystal projector that prevents the image burn-in phenomenon or image sticking in a liquid crystal projector of ferroelectric liquid crystal, and moreover, that provides a bright projected image, the polarization directions of linearly polarized light beams that are irradiated upon a liquid crystal display device are switched in synchronization with the alternate reversal of the polarity of the liquid crystal display device, whereby a negative image, which could not be displayed in the prior art, can be converted to a positive image and displayed. In addition, in order to provide a liquid crystal projector that presents a bright projected image while preventing the burn-in phenomenon in a liquid crystal display device of ferroelectric liquid crystal, and further, that can be used in displaying a stereoscopic image, a P-polarized light beam and an S-polarized light beam are alternately generated, and an S-polarized light beam image light and a P-polarized light beam image light are produced from two liquid crystal display devices and alternately projected. When displaying a stereoscopic image, the left-eye image light of the S-polarized light beam and the right-eye image light of the P-polarized light beam are alternately produced and alternately projected.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile