IDiyas

For the Inventor, By the Inventor

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 10479870 B1

PDFFull Text
Date of Patent:
Nov. 19, 2019

Filed:

Jun. 03, 2016

Method for manufacturing polarizer and polarizer manufactured thereby

Applicant:

Lg Chem, Ltd., Seoul, KR;

Inventors:

Ji Young Kim, Daejeon, KR;

Ji Young Kim, Daejeon, KR;

Hye Min Yu, Daejeon, KR;

Kyun Il Rah, Daejeon, KR;

Jin Yong Park, Daejeon, KR;

Eungki Lee, Daejeon, KR;

Taek Geun Nam, 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 ...
C08J 3/24 (2006.01); G02B 5/30 (2006.01); B29D 11/00 (2006.01); B32B 27/08 (2006.01); B32B 27/30 (2006.01); D06P 3/58 (2006.01); D06P 7/00 (2006.01); D06P 1/653 (2006.01); D06P 1/673 (2006.01); G02B 1/14 (2015.01); B29K 29/00 (2006.01); G02F 1/1335 (2006.01); D06P 1/00 (2006.01);
U.S. Cl.
CPC ...
C08J 3/24 (2013.01); B29D 11/00644 (2013.01); B32B 27/08 (2013.01); B32B 27/306 (2013.01); B32B 27/308 (2013.01); D06P 1/653 (2013.01); D06P 1/673 (2013.01); D06P 3/58 (2013.01); D06P 7/005 (2013.01); G02B 5/30 (2013.01); B29K 2029/04 (2013.01); B32B 2307/42 (2013.01); C08J 2329/04 (2013.01); D06P 1/0076 (2013.01); D06P 1/6533 (2013.01); D06P 1/67316 (2013.01); G02B 1/14 (2015.01); G02F 1/133528 (2013.01); G02F 2201/50 (2013.01);
Abstract

The present specification relates to a method for manufacturing a polarizer, the method including: a step of dyeing at least one dye of iodine and dichroic dyes on a polyvinyl alcohol-based film; a first cross-linking step of cross-linking the polyvinyl alcohol-based film and the dye by using a first aqueous solution including a polyvalent carboxylic acid compound and a boron compound; a second cross-linking step of cross-linking the polyvinyl alcohol-based film and the dye by using a second aqueous solution including a polyvalent carboxylic acid compound and a boron compound; and a third cross-linking step of cross-linking the polyvinyl alcohol-based film and the dye by using a third aqueous solution including a polyvalent carboxylic acid compound, in which in the first cross-linking step and the second cross-linking step, stretching is performed along with cross-linking, and a polarizer manufactured by using the same.

Find Patent Forward Citations

Loading…