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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 10144831 B1

PDFFull Text
Date of Patent:
Dec. 04, 2018

Filed:

Sep. 30, 2014

Optical film comprising primer layer containing polyester resin and polarizing plate using same

Applicant:

Lg Chem, Ltd., Seoul, KR;

Inventors:

Hwa-Sub Shim, Daejeon, KR;

Jun-Wuk Park, Daejeon, KR;

Yi-Rang Lim, Daejeon, KR;

Kyoung-Won Kim, Daejeon, KR;

Assignee:

LG CHEM, LTD., Seoul, KR;

Attorney:

Dentons US LLP

Primary Examiner:

Stephone B Allen

Assistant Examiner:

Adam W Booher

Int. Cl.
CPC ...
C09D 5/00 (2006.01); G02B 1/14 (2015.01); B32B 7/02 (2006.01); B32B 27/08 (2006.01); B32B 27/16 (2006.01); B32B 27/18 (2006.01); B32B 27/30 (2006.01); B32B 27/36 (2006.01); C08J 7/04 (2006.01); C09D 151/06 (2006.01); C09D 167/02 (2006.01); G02B 1/11 (2015.01); G02B 5/30 (2006.01); C09D 151/08 (2006.01); G02B 1/111 (2015.01);
U.S. Cl.
CPC ...
C09D 5/002 (2013.01); B32B 7/02 (2013.01); B32B 27/08 (2013.01); B32B 27/16 (2013.01); B32B 27/18 (2013.01); B32B 27/308 (2013.01); B32B 27/36 (2013.01); C08J 7/042 (2013.01); C08J 7/045 (2013.01); C08J 7/047 (2013.01); C09D 151/08 (2013.01); C09D 167/02 (2013.01); G02B 1/11 (2013.01); G02B 1/111 (2013.01); G02B 1/14 (2015.01); G02B 5/3016 (2013.01); G02B 5/3025 (2013.01); B32B 2255/10 (2013.01); B32B 2255/26 (2013.01); B32B 2264/00 (2013.01); B32B 2264/12 (2013.01); B32B 2307/418 (2013.01); B32B 2307/42 (2013.01); B32B 2307/516 (2013.01); B32B 2307/732 (2013.01); B32B 2551/00 (2013.01); C08J 2333/00 (2013.01); C08J 2333/02 (2013.01); C08J 2451/08 (2013.01); C08J 2467/02 (2013.01);
Abstract

The present invention relates to an optical film including: a base material film; and a primer layer containing a polyester resin and water-dispersible minute particulates on at least one surface of the base material film and having a refractive index difference of 0.03 or less from the base material film, in which the polyester resin includes polyester glycol formed by a reaction of polybasic acid including an aromatic carboxylic acid compound and an aliphatic carboxylic acid compound at a mole ratio of 1:9 to 9:1 and polyol, adhesion force between the optical film and a functional coating layer is excellent, and a rainbow phenomenon is reduced and an optical property is excellent due to a small refractive index difference.

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