US 2017/0285236 A1Published application

Method for manufacturing polarizer, and polarizer and polarizing plate manufactured using same

AssigneeLG Chem, Ltd.

InventorsJae Il RYU, Eung Jin JANG, Jin Yong PARK, Eungki LEE, Hyung Koo KANG, Taek Geun NAM, Deok Woo PARK, Young Gon KIM, Yeon Soo KIM, You Kyeong KIM

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Abstract

The present invention relates to a method for manufacturing a polarizer, including: a) immersing and swelling a polyvinyl alcohol-based film in an aqueous solution containing an azo-based dye having an absorption wavelength of 300 nm to 550 nm; b) dyeing the swollen polyvinyl alcohol-based film with an iodine-based dye; and c) stretching the dyed polyvinyl alcohol-based film, and a polarizer manufactured using the method.

Claims14

Dependent claims

A method for manufacturing a polarizer, the method comprising:

a) immersing and swelling a polyvinyl alcohol-based film in an aqueous solution containing an azo-based dye having an absorption wavelength of 300 nm to 550 nm;
b) dyeing the swollen polyvinyl alcohol-based film with an iodine-based dye;
and
c) stretching the dyed polyvinyl alcohol-based film.

1 more element

Dependencies are inferred from the claim text.

Facts

Application: 15/510,495Filed 21 Sep 2015
Priority: KR 10-2014-013058229 Sep 2014
Published: 5 Oct 2017
Term ends: Not estimatedThe source records don’t support an estimate.

Classification20 codes

G02B 5/3025
Polarising elements: polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
B29C 55/005
Shaping by stretching, e.g. drawing through a die; Apparatus therefor: characterised by the choice of materials
B29C 55/02
Shaping by stretching, e.g. drawing through a die; Apparatus therefor: of plates or sheets
B29D 11/00644
Production of filters: polarizing