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:
Mar. 31, 2015
Filed:
Sep. 27, 2012
Fujifilm Corporation, Tokyo, JP;
Jun Takeda, Kanagawa, JP;
Masato Nakao, Kanagawa, JP;
FUJIFILM Corporation, Tokyo, JP;
Abstract
A laminated optical film which exhibit a high front contrast ratio and even brightness, improve viewing angle characteristics of a liquid crystal display of a horizontal alignment mode, and have high durability. A laminated optical film comprising: a B layer; and a C layer, wherein the B layer satisfies the following three formulae (Ib) to (IIIb), the C layer satisfies the following two formulae (Ic) and (IIc), and the absolute value |ΔSP value| of a difference in SP value between the primary components of the B and C layers is not more than 1.5, the SP value being determined by Hoy's method.1.0≦Nz≦3.0;  (Ib):70 nm≦Re (550); and  (IIb):0 nm≦Rth (550)≦200 nm,  (IIIb):Re (550)≦10 nm; and  (Ic):−200 nm≦Rth (550)≦−50 nm  (IIc):