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公开(公告)号：US20210394502A1
公开(公告)日：2021-12-23
申请号：US17287894
申请日：2020-01-10
Applicant: LG CHEM, LTD.
Inventor： Hyun Soo LEE , Gae Sung KIM , Young Gon KIM , Tae Woo KIM , Young Tae KIM , Jin Yong PARK , Sang Hyun NAH
Abstract: The present application relates to a polymer film and a method for producing a polarizing plate. The present application can provide a polymer film satisfying optical and mechanical durability required in a polarizing plate effectively and capable of forming a polarizing plate without causing bending when applied to a display device, and a method for producing a polarizing plate to which the polymer film is applied. The present application can provide a polymer film capable of realizing the required optical and mechanical durability without causing bending even in a polarizing plate applied to a thin display device and/or a thin polarizing plate, and a method for producing a polarizing plate to which the polymer film is applied.
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公开(公告)号：US20200341316A1
公开(公告)日：2020-10-29
申请号：US16962191
申请日：2019-03-27
Applicant: LG CHEM, LTD.
Inventor： Tae Woo KIM , Jin Yong PARK , Won Chul LEE , Jun Cheol SHIN , Ki Jun JUNG , Jae Min CHOI
IPC: G02F1/13363 , G02B1/14 , G02B5/30 , G02F1/1335
Abstract: Provided is a polarizing plate and a display device. The polarizing plate has excellent durability against an external environment, for example, moisture, due to a protective film of a polarizer, and can prevent color distortion upon observation with polarized sunglasses, and a display device comprising the polarizing plate.
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公开(公告)号：US20190025642A1
公开(公告)日：2019-01-24
申请号：US16071704
申请日：2017-02-03
Applicant: LG CHEM, LTD.
Inventor： Sung Hyun NAM , Kyung Ki HONG , Yeong Rae CHANG , Heon KIM , Kyun Il RAH , Jong Hyun JUNG , Byung Sun LEE , Eung Jin JANG , Jin Yong PARK , Deok Woo PARK , Ji Young KIM
IPC: G02F1/1335 , G02B5/30
Abstract: The present application relates to a polarizing plate and a display device. In the present application, a polarizing plate can be provided, which can be applied to a display device comprising a highly reflective panel to solve disadvantages while maintaining advantages of the device. In the present application, a display device comprising the polarizing plate and the highly reflective panel can also be provided.
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公开(公告)号：US20180134854A1
公开(公告)日：2018-05-17
申请号：US15572685
申请日：2016-06-03
Applicant: LG CHEM, LTD.
Inventor： Ji Young KIM , Ji Young KIM , Hye Min YU , Kyun Il RAH , Jin Yong PARK , Eungki LEE , Taek Geun NAM
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.
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公开(公告)号：US20190196081A1
公开(公告)日：2019-06-27
申请号：US16329976
申请日：2017-08-29
Applicant: LG CHEM, LTD.
Inventor： Min Yeong JO , Jin Yong PARK , Dong Min PARK , Won Chul LEE , Ki Jun JUNG
Abstract: The present application relates to a device for testing optical properties and a method for testing optical properties using the same. The device of the present application has inexpensive manufacturing and maintenance costs, is capable of testing a wide range of plane directional phase differences, and provides the method for testing optical properties with improved identification efficiency of the phase retardation axis.
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Patent Agency Ranking
6.发明申请公开(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
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.
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公开(公告)号：US20210356640A1
公开(公告)日：2021-11-18
申请号：US17287310
申请日：2020-01-10
Applicant: LG CHEM, LTD.
Inventor： Tae Woo KIM , Gae Sung KIM , Hyun Soo LEE , Khyung Sik CHO , Jin Yong PARK , Sang Hyun NAH
IPC: G02B5/30 , G02B1/14 , G02F1/1335
Abstract: The present application relates to a polarizing plate. The present application can provide a polarizing plate having excellent optical and mechanical durability even when it is formed in a thin thickness or is applied to a thin display device and without causing bending or twisting when applied to a display device.
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公开(公告)号：US20210402722A1
公开(公告)日：2021-12-30
申请号：US17293419
申请日：2020-02-11
Applicant: LG CHEM, LTD.
Inventor： Young Sik KIM , Jin Yong PARK , Yeon Ok JUNG , Min Woo HWANG , Jung Geun KWON , Yong Su JU , Chan Youn KIM , Ji Hoon PARK , Seong Min LIM
Abstract: Provided is a method for manufacturing a polarizing plate, comprising a step of irradiating an optical laminate with ultraviolet rays having an emission wavelength band of 380 nm to 410 nm. The optical laminate sequentially comprises a first base film, a first adhesive layer, a linear polarizer, a second adhesive layer, a second base film and a reverse dispersion liquid crystal layer. The first adhesive layer and the second adhesive layer each comprise a photosensitizer for initiating a curing reaction in a wavelength band of 350 nm to 410 nm, and the ultraviolet rays are irradiated on the first base film side of the optical laminate.
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公开(公告)号：US20210048708A1
公开(公告)日：2021-02-18
申请号：US16967105
申请日：2019-09-20
Applicant: LG CHEM, LTD.
Inventor： Jae Min CHOI , Jin Yong PARK , Sang Hyun NAH , Won Chul LEE , Jun Cheol SHIN
IPC: G02F1/1335 , G02F1/1333 , G02F1/1337
Abstract: Provided is a liquid crystal display comprising: a liquid crystal cell; an upper polarizing plate provided on one surface of the liquid crystal cell and including a first polarizer and a low moisture-permeable film disposed on one surface of the first polarizer so as to face the liquid crystal cell; and a lower polarizing plate provided on the other surface of the liquid crystal cell and including a second polarizer, wherein a ratio of a shrinkage force in a direction parallel to the absorption axis of the second polarizer of the low moisture-permeable film to a shrinkage force in an absorption-axial direction of the second polarizer is 30% or more.
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公开(公告)号：US20200166673A1
公开(公告)日：2020-05-28
申请号：US16630662
申请日：2018-07-24
Applicant: LG CHEM, LTD
Inventor： Min Yeong JO , Jin Yong PARK , Tae Woo KIM , Eung Ki LEE
IPC: G02B1/14 , B32B27/08 , B32B27/30 , G02F1/1335
Abstract: The present invention relates to a polarizing plate capable of suppressing bending of a liquid crystal display device, and a liquid crystal display device including the same.
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