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. 08, 2013
Filed:
Nov. 19, 2008
Megumi Katou, Ibaraki, JP;
Hiroaki Mizushima, Ibaraki, JP;
Mie Nakata, Ibaraki, JP;
Takemichi Yoshida, Ibaraki, JP;
Megumi Katou, Ibaraki, JP;
Hiroaki Mizushima, Ibaraki, JP;
Mie Nakata, Ibaraki, JP;
Takemichi Yoshida, Ibaraki, JP;
Nitto Denko Corporation, Ibaraki-shi, Osaka, JP;
Nippon Shokubai Co., Ltd., Osaka-shi, JP;
Abstract
A polarizing plate of the present invention includes a polyvinyl alcohol-based polarizer; and transparent protective films provided on both sides of the polarizer with an adhesive layer interposed between the polarizer and each transparent protective film, wherein the transparent protective film on one side comprises a lactone ring structure-containing (meth)acrylic resin and has an in-plane retardation of less than 40 nm and a thickness direction retardation of less than 80 nm, and the transparent protective film on the other side is a retardation plate that comprises a cellulose ester and satisfies the relation: nx>ny>nz, wherein nx is a refractive index in an X-axis direction where the in-plane refractive index is maximum, ny is a refractive index in a Y-axis direction perpendicular to the X-axis, and nz is a refractive index in a Z-axis direction corresponding to the thickness direction. The polarizing plate can satisfy durability and display uniformity (unevenness).