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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.:

US 9557450 B1

PDFFull Text
Date of Patent:
Jan. 31, 2017

Filed:

May. 24, 2012

Pressure-sensitive adhesive layer-attached polarizing film and image display

Applicants:

Atsushi Yasui, Ibaraki, JP;

Yuusuke Toyama, Ibaraki, JP;

Tomoyuki Kimura, Ibaraki, JP;

Masayuki Satake, Ibaraki, JP;

Shusaku Goto, Ibaraki, JP;

Takeharu Kitagawa, Ibaraki, JP;

Minoru Miyatake, Ibaraki, JP;

Tomohiro Mori, Ibaraki, JP;

Takashi Kamijo, Ibaraki, JP;

Inventors:

Atsushi Yasui, Ibaraki, JP;

Yuusuke Toyama, Ibaraki, JP;

Tomoyuki Kimura, Ibaraki, JP;

Masayuki Satake, Ibaraki, JP;

Shusaku Goto, Ibaraki, JP;

Takeharu Kitagawa, Ibaraki, JP;

Minoru Miyatake, Ibaraki, JP;

Tomohiro Mori, Ibaraki, JP;

Takashi Kamijo, Ibaraki, JP;

Assignee:

NITTO DENKO CORPORATION, Ibaraki-shi, Osaka, JP;

Attorney:

Westerman, Hattori, Daniels & Adrian, LLP

Primary Examiner:

Ricky D Shafer

Int. Cl.
CPC ...
G02B 5/30 (2006.01); G02B 1/16 (2015.01); B32B 23/08 (2006.01); B32B 23/20 (2006.01); B32B 27/08 (2006.01); B32B 27/30 (2006.01); B32B 27/36 (2006.01); C09J 7/02 (2006.01); C09J 133/06 (2006.01); G02B 1/14 (2015.01); G02B 1/08 (2006.01); G02F 1/1335 (2006.01); C08K 3/00 (2006.01); C08K 3/24 (2006.01);
U.S. Cl.
CPC ...
G02B 1/16 (2015.01); B32B 23/08 (2013.01); B32B 23/20 (2013.01); B32B 27/08 (2013.01); B32B 27/306 (2013.01); B32B 27/308 (2013.01); B32B 27/36 (2013.01); C09J 7/0246 (2013.01); C09J 7/0296 (2013.01); C09J 133/066 (2013.01); G02B 1/08 (2013.01); G02B 1/14 (2015.01); G02B 5/305 (2013.01); G02B 5/3033 (2013.01); G02F 1/133533 (2013.01); B32B 2250/02 (2013.01); B32B 2250/03 (2013.01); B32B 2250/04 (2013.01); B32B 2250/40 (2013.01); B32B 2255/10 (2013.01); B32B 2255/26 (2013.01); B32B 2307/21 (2013.01); B32B 2307/4026 (2013.01); B32B 2307/412 (2013.01); B32B 2307/42 (2013.01); B32B 2307/516 (2013.01); B32B 2307/702 (2013.01); B32B 2307/704 (2013.01); B32B 2307/706 (2013.01); B32B 2307/708 (2013.01); B32B 2457/202 (2013.01); C08K 3/0083 (2013.01); C08K 3/24 (2013.01); C09J 2201/606 (2013.01); C09J 2203/318 (2013.01); C09J 2205/102 (2013.01); C09J 2433/00 (2013.01); G02B 5/3025 (2013.01);
Abstract

A pressure-sensitive adhesive layer-attached polarizing film of the invention includes: a polarizing film; and a pressure-sensitive adhesive layer provided on the polarizing film, wherein the polarizing film includes a polarizer and a transparent protective film provided on only one side of the polarizer, the pressure-sensitive adhesive layer is provided on a side of the polarizer where the transparent protective film is absent, and the pressure-sensitive adhesive layer is made of a pressure-sensitive adhesive composition containing a (meth)acryl-based polymer (A) and an alkali metal salt (B). The pressure-sensitive adhesive layer-attached polarizing film has a pressure-sensitive adhesive layer with an antistatic function and satisfactory durability and whose optical properties are less likely to be degraded.

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