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.

Date of Patent:
Sep. 02, 2014

Filed:

Oct. 21, 2008
Applicants:

Naoki Tomoguchi, Ibaraki, JP;

Youichirou Sugino, Ibaraki, JP;

Nobuaki Iwamoto, Ibaraki, JP;

Megumi Katou, Ibaraki, JP;

Inventors:

Naoki Tomoguchi, Ibaraki, JP;

Youichirou Sugino, Ibaraki, JP;

Nobuaki Iwamoto, Ibaraki, JP;

Megumi Katou, Ibaraki, JP;

Assignees:

Nitto Denko Corporation, Ibaraki-shi, JP;

Nippon Shokubai Co., Ltd, Osaka-shi, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 5/30 (2006.01); G02F 1/1335 (2006.01); G02B 1/10 (2006.01);
U.S. Cl.
CPC ...
G02B 5/3033 (2013.01); G02B 1/105 (2013.01);
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 films each comprise a lactone ring structure-containing (meth)acrylic resin, each one of the transparent protective films has a thickness T(μm) of 10 to 35 μm, and the polarizer has a thickness T(μm) which satisfies that the ratio (T/T) of Tto the thickness Tof each one of the transparent protective films falls within the range of 0.8 to 1.8. The polarizing plate is designed to be thin and can satisfy durability.


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