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:
Aug. 24, 2004
Filed:
Nov. 05, 2001
Takehiro Okada, Osaka, JP;
Masanari Hashimukai, Osaka, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A liquid crystal display (LCD) projector in which temperature rise of the polarizing plate is reduced and the liquid crystal display panels and polarizing plates are easily retained in place. In the LCD projector, at least one of the incident light side polarizing plate and the exit light side polarizing plate has a first polarizing plate disposed on the incident light side of a glass substrate and a second polarizing plate disposed on the exit light side of the glass substrate. The first polarizing plate has a low degree of polarization and the second polarizing plate has a high degree of polarization and the polarizing plates are arranged to have their axes of transmission polarization coincident. The temperature rise due to absorption of light is shared by the first and second polarizing plates and this contributes to reduction in size of the projector.