Lg Chem, Ltd

Eungki Lee

Ji Young Kim

Jin Yong Park

Taek Geun Nam

Kyun Il Rah

Hye Min Yu

Eung Jin Jang

Yoonkyung Kwon

Young Gon Kim

Sanghun Han

Yeon Soo Kim

Ho Kyung Lee

Mi So Lee

Deok Woo Park

Hyung Koo Kang

Hae Sung Cho

Jae Il Ryu

You Kyeong Kim

Jin Ah Seok

Jun Gu Yeo

Chang Song Lee

Daehyeon Kim

Yoobin Kim

Su Youn Choi

The present specification relates to a method for manufacturing a polarizer and a polarizer manufactured by using the same, and more particularly, to a method for manufacturing a polarizer, which includes a cross-linking and elongating step using an aqueous solution including a polyvalent carboxylic acid compound and a boric acid compound, and a polarizer manufactured by using the same.

Method for manufacturing polarizer and polarizer manufactured by the same

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.

Method for manufacturing polarizer and polarizer manufactured thereby

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.

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

An apparatus for controlling a color of a film includes a dyeing bath to dip a washed PVA film in an aqueous iodine solution and an aqueous potassium solution and then dye the PVA film therewith, a complementary bath to dip the PVA film in an aqueous potassium solution and then dye the PVA film therewith, a device oven to dry the PVA film having the oriented iodine and potassium, a 4-stage oven to dry the PVA film dried in the device oven, and a central controller to predict a color value of the polarizing film.

Apparatus for controlling color of polarizing film and method of controlling the same

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Daejeon, South Korea

Eungki Lee