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. 15, 2013
Filed:
May. 17, 2005
Hajime Nakayama, Minami-Ashigara, JP;
Tadashi Ito, Minami-Ashigara, JP;
Takako Nishiura, Odawara, JP;
Yousuke Nishiura, Odawara, JP;
Hajime Nakayama, Minami-Ashigara, JP;
Tadashi Ito, Minami-Ashigara, JP;
FUJIFILM Corporation, Minato-Ku, Tokyo, JP;
Abstract
An optical compensation polarizing plate comprising: a first transparent protective film; a polarizer; a second transparent protective film; and an optical compensation layer in this order, wherein at least one of the first and second transparent protective films is a cellulose acylate film having a retardation value in plane Re (nm) and a retardation value in film thickness direction Rth (nm) which fulfill the following formulae (I) and (II), and Nz and Redefined by the following formulae (III) and (IV), of the optical compensation layer fulfill the following formulae (V) and (VI): (I) |Re|≦10, (II) |Rth|≦25, (III) Nz=(nx−nz)/(nx−ny), (IV) Re=(nx−ny)×d, (V) 0.4≦Nz≦0.6 (VI) 100≦Re≦350, wherein Reis a retardation value in plane (nm) at a wavelength of 590 nm; Nz is an Nz factor at a wavelength of 590 nm; nxis a refractive index along a slow axis in a film plane; nyis a refractive index along a direction perpendicular to the slow axis in a film plane; nzis a refractive index along a thickness direction of the film; and dis a thickness of the film (nm).