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:
Nov. 08, 2011
Filed:
Sep. 22, 2008
Shun Nakamura, Minami-Ashigara, JP;
Masayoshi Toyoda, Minami-Ashigara, JP;
Shun Nakamura, Minami-Ashigara, JP;
Masayoshi Toyoda, Minami-Ashigara, JP;
FUJIFILM Corporation, Minato-Ku, Tokyo, JP;
Abstract
A laminated optical film including a first optical anisotropic layer, and a second optical anisotropic layer, wherein Relationship (1), −10 nm≦ΔRe1−ΔRe2≦10 nm, is satisfied when a slow phase axis of the first optical anisotropic layer is substantially perpendicular to a slow phase axis of the second optical anisotropic layer, wherein Relationship (2), −10 nm≦ΔRe1+ΔRe2≦10 nm, is satisfied when the slow phase axis of the first optical anisotropic layer is substantially parallel to the slow phase axis of the second optical anisotropic layer, wherein an in-plane retardation value Re of the film as a whole satisfies 30 nm≦Re≦500 nm, where ΔRe1 denotes a value calculated from 'Re1 (at a temperature of 50° C.)−Re1 (at a temperature of 25° C.)' concerning the first optical anisotropic layer, and ΔRe2 denotes a value calculated from 'Re2 (at a temperature of 50° C.)−Re2 (at a temperature of 25° C.)' concerning the second optical anisotropic layer.