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:
Dec. 18, 2007
Filed:
Jul. 29, 2004
Yuko Sato, Tokyo, JP;
Jin Matsushima, Tokyo, JP;
Mitsuhiro Sugimoto, Tokyo, JP;
Ken Sumiyoshi, Tokyo, JP;
Yuko Sato, Tokyo, JP;
Jin Matsushima, Tokyo, JP;
Mitsuhiro Sugimoto, Tokyo, JP;
Ken Sumiyoshi, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
An LCD device in an LCD projector includes a TFT substrate, a counter substrate, an LC layer sandwiched between the TFT substrate and the counter substrate, and a pair of compensation substrates attached onto the outer surfaces of the TFT substrate and the counter substrate far from the LC layer. The compensation substrate has a negative coefficient of thermal expansion (CTE) for compensating the retardation caused by a temperature rise of the TFT substrate and the counter substrate due to irradiation thereof by a light source.