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:
Oct. 13, 2009
Filed:
Feb. 15, 2006
Naoki Koishi, Ibaraki, JP;
Shuuji Yano, Ibaraki, JP;
Kenji Yoda, Ibaraki, JP;
Kentarou Kobayashi, Ibaraki, JP;
Masatoshi Tomonaga, Ibaraki, JP;
Naoto Ooe, Ibaraki, JP;
Naoki Koishi, Ibaraki, JP;
Shuuji Yano, Ibaraki, JP;
Kenji Yoda, Ibaraki, JP;
Kentarou Kobayashi, Ibaraki, JP;
Masatoshi Tomonaga, Ibaraki, JP;
Naoto Ooe, Ibaraki, JP;
Nitto Denko Corporation, Osaka, JP;
Abstract
It is the object of the present invention to provide a polarizing element capable of increasing a contrast ratio in an oblique direction and reducing a color shift in an oblique direction of a liquid crystal display apparatus. A polarizing element according to the present invention includes a polarizer, a negative C plate, a positive A plate, and a positive C plate each arranged on one side of the polarizer. The positive A plate is arranged between the polarizer and the positive C plate such that a slow axis of the positive A plate is substantially perpendicular to an absorption axis of the polarizer. The positive C plate has Rth[590] of −60 nm or less.