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:
Jan. 13, 2009
Filed:
Mar. 21, 2006
Wide-viewing angle compensation film and transmission type liquid-crystal display employing the same
Naoto Obara, Mie, JP;
Shinsuke Toyomasu, Mie, JP;
Naoto Obara, Mie, JP;
Shinsuke Toyomasu, Mie, JP;
Tosoh Corporation, Shunan-shi, JP;
Abstract
A wide-viewing angle compensation film contains a polarizing plate and an optical compensation film which exhibits negative birefringence and has an in-plane retardation (Re) of 60-220 nm and an orientation parameter (Nz) in the range of 0±0.05, the optical compensation film exhibiting negative birefringence and the polarizing plate being stacked so that the slow axis of the compensation film is perpendicular or parallel to the absorption axis of the polarizing plate; and a transmission type liquid-crystal display contains a liquid-crystal cell and the wide-viewing angle compensation film disposed on at least one side of the cell.