公开(公告)号：US20220152980A1

公开(公告)日：2022-05-19

申请号：US17440144

申请日：2020-01-31

Applicant: LG CHEM, LTD.

Inventor： Na Young SHIN ,  Kyun Il RAH ,  Jae Il RYU ,  Seung Kyu PARK ,  Ji Young KIM ,  You Kyeong KIM

IPC: B32B7/023 ,  B32B27/08 ,  B32B27/30 ,  G02B5/30 ,  G02B1/111

Abstract: The present disclosure relates to an optical laminate or a reddening-resistant layer. The present disclosure can provide an optical laminate that does not cause a so-called reddening phenomenon even when driven or maintained under extremely harsh conditions (e.g., very high temperature conditions), or a reddening-resistant layer applied thereto.

公开(公告)号：US20170285236A1

公开(公告)日：2017-10-05

申请号：US15510495

申请日：2015-09-21

Applicant: LG CHEM, LTD.

Inventor： Jae 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

IPC: G02B5/30 ,  B32B27/30 ,  C09B67/36 ,  C08J5/18 ,  C09B67/02 ,  B29D11/00 ,  G02B1/14

CPC classification number: G02B5/3025 ,  B29C55/005 ,  B29C55/02 ,  B29D11/00644 ,  B29K2029/04 ,  B32B27/30 ,  B32B2307/42 ,  C08J5/18 ,  C08J2329/04 ,  C09B67/0079 ,  C09B67/0097 ,  G02B1/14 ,  G02B5/3033

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.

公开(公告)号：US20220228994A1

公开(公告)日：2022-07-21

申请号：US17611873

申请日：2020-03-09

Applicant: LG CHEM, LTD.

Inventor： Jae Il RYU ,  Taek Geun NAM ,  Je Hyuk YOO

IPC: G01N21/94 ,  G02B5/30 ,  G02B1/14 ,  G01N21/55

Abstract: A device for inspecting a liquid crystal stain of a polarization plate, the device comprising a surface light source; a first polarization member; a polarization plate including a liquid crystal film; a second polarization member; and an inspection source, and a method using the device, the device and the method capable of easily inspecting liquid crystal stains generated on a polarization plate with excellent visibility.