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. 23, 2012
Filed:
Feb. 07, 2007
Shigeki Uehira, Minami-ashigara, JP;
Michitaka Matsuumi, Minami-ashigara, JP;
Mamoru Sakurazawa, Minami-ashigara, JP;
Masaki Okazaki, Minami-ashigara, JP;
Naoyuki Nishikawa, Haibara-gun, JP;
Shigeki Uehira, Minami-ashigara, JP;
Michitaka Matsuumi, Minami-ashigara, JP;
Mamoru Sakurazawa, Minami-ashigara, JP;
Masaki Okazaki, Minami-ashigara, JP;
Naoyuki Nishikawa, Haibara-gun, JP;
FUJIFILM Corporation, Minato-Ku, Tokyo, JP;
Abstract
An optical film, which has been subjected to an orientation treatment, containing a low-molecular weight compound, in which a birefringence Δn(550 nm) is larger than zero (0) in an orientation direction, and the optical film satisfies the following expressions (1) and (2); and a phase difference plate, a polarizing plate and a liquid crystal display using the same:0.5<Δ(450 nm)/Δ(550 nm)<1.0; and  Expression (1)1.05<Δ(630 nm)/Δ(550 nm)<1.5.  Expression (2)