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:
Sep. 11, 2012
Filed:
Mar. 02, 2009
Ryoko Horikoshi, Kanagawa, JP;
Ryoko Horikoshi, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Abstract
An image display apparatus includes a liquid crystal panel having a liquid crystal layer disposed between a pair of substrates, and an optical compensation plate pair including a first optical compensation plate and a second optical compensation plate, the first optical compensation plate being formed of a negative uniaxial crystal and the second optical compensation plate being formed of a positive uniaxial crystal. The optical compensation plate pair is configured such that an optical phase difference caused by a difference in thickness between the first optical compensation plate and the second optical compensation plate cancels an optical phase difference generated by the liquid crystal panel.