JP2022105727A5 - - Google Patents

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JP2022105727A5
JP2022105727A5 JP2022086272A JP2022086272A JP2022105727A5 JP 2022105727 A5 JP2022105727 A5 JP 2022105727A5 JP 2022086272 A JP2022086272 A JP 2022086272A JP 2022086272 A JP2022086272 A JP 2022086272A JP 2022105727 A5 JP2022105727 A5 JP 2022105727A5
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Prior art keywords
meth
curable composition
resin layer
polarizer
polarizing film
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JP2022086272A
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Japanese (ja)
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JP2022105727A (en
JP7403584B2 (en
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Priority claimed from JP2018185678A external-priority patent/JP7082021B2/en
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Publication of JP2022105727A5 publication Critical patent/JP2022105727A5/ja
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Claims (8)

第１樹脂層、偏光子、配向膜、及び第２樹脂層がこの順に積層された偏光フィルムであって、
第１樹脂層は、（メタ）アクリル化合物を含む第１硬化性組成物の硬化物であり、
偏光子は、（メタ）アクリロイル基を有する重合性液晶化合物と二色性色素とを含む偏光子形成用組成物の硬化物であり、
配向膜は、（メタ）アクリル化合物を含む配向膜形成用組成物の硬化物であり、
第２樹脂層は、（メタ）アクリル化合物を含む第２硬化性組成物の硬化物であり、
第１硬化性組成物及び第２硬化性組成物はラジカル重合開始剤を含む、偏光フィルム。 A polarizing film in which a first resin layer, a polarizer, an alignment film, and a second resin layer are laminated in this order,
The first resin layer is a cured product of a first curable composition containing a (meth)acrylic compound,
The polarizer is a cured product of a polarizer-forming composition containing a polymerizable liquid crystal compound having a (meth)acryloyl group and a dichroic dye,
The alignment film is a cured product of a composition for forming an alignment film containing a (meth)acrylic compound,
The second resin layer is a cured product of a second curable composition containing a (meth)acrylic compound,
A polarizing film , wherein the first curable composition and the second curable composition contain a radical polymerization initiator . 第１硬化性組成物及び第２硬化性組成物の少なくとも一方は、（メタ）アクリル化合物として、ウレタン（メタ）アクリレート化合物を含む、請求項１に記載の偏光フィルム。 The polarizing film according to claim 1 , wherein at least one of the first curable composition and the second curable composition contains a urethane (meth)acrylate compound as the (meth)acrylic compound. 前記ウレタン（メタ）アクリレート化合物は、単位分子量あたりの（メタ）アクリロイル基数が１５×１０－４以上である、請求項２に記載の偏光フィルム。 3. The polarizing film according to claim 2 , wherein the urethane (meth)acrylate compound has 15×10 −4 or more (meth)acryloyl groups per unit molecular weight. 第１硬化性組成物及び第２硬化性組成物の少なくとも一方は、（メタ）アクリル化合物として、多官能（メタ）アクリレート化合物を含む、請求項１～３のいずれかに記載の偏光フィルム。 The polarizing film according to any one of claims 1 to 3 , wherein at least one of the first curable composition and the second curable composition contains a polyfunctional (meth)acrylate compound as the (meth)acrylic compound. 前記多官能（メタ）アクリレート化合物の（メタ）アクリロイル基の数は、６以上である、請求項４に記載の偏光フィルム。 The polarizing film according to claim 4 , wherein the polyfunctional (meth)acrylate compound has 6 or more (meth)acryloyl groups. 前記多官能（メタ）アクリレート化合物は分岐構造を有し、該分岐構造中の（メタ）アクリロイル基に最も近い分岐点と、該（メタ）アクリロイル基とを連結する鎖の原子数は３以下である、請求項４又は５に記載の偏光フィルム。 The polyfunctional (meth)acrylate compound has a branched structure, and the number of atoms in the chain connecting the branch point closest to the (meth)acryloyl group in the branched structure and the (meth)acryloyl group is 3 or less. 6. The polarizing film according to claim 4 or 5 . 第２樹脂層、配向膜、及び偏光子がこの順に積層された積層体の偏光子面に、第１硬化性組成物を塗布又は重ね合わせ、該第１硬化性組成物を硬化させる工程を含む、請求項１～６のいずれかに記載の偏光フィルムの製造方法。 A step of applying or superimposing a first curable composition on a polarizer surface of a laminate in which a second resin layer, an alignment film, and a polarizer are laminated in this order, and curing the first curable composition. The method for producing a polarizing film according to any one of claims 1 to 6 . 離型フィルム上に形成された第１硬化性組成物と、第２樹脂層、配向膜、及び偏光子がこの順に積層された積層体の偏光子面とを重ね合わせ、離型フィルム側から活性エネルギー線を照射して第１硬化性組成物を硬化させることにより、離型フィルム、第１樹脂層、偏光子、配向膜、及び第２樹脂層がこの順に積層された積層体を得、該積層体から離型フィルムを剥離する工程を含む、請求項１～６のいずれかに記載の偏光フィルムの製造方法。 The first curable composition formed on the release film is superimposed on the polarizer surface of the laminate in which the second resin layer, the alignment film, and the polarizer are laminated in this order, and the activation is performed from the release film side. By curing the first curable composition by irradiating with an energy ray, a laminate in which a release film, a first resin layer, a polarizer, an alignment film, and a second resin layer are laminated in this order is obtained, 7. The method for producing a polarizing film according to any one of claims 1 to 6 , comprising a step of peeling off the release film from the laminate.
JP2022086272A 2018-09-28 2022-05-26 Polarizing film and its manufacturing method Active JP7403584B2 (en)

Priority Applications (1)

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JP2022086272A JP7403584B2 (en) 2018-09-28 2022-05-26 Polarizing film and its manufacturing method

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2018185678A JP7082021B2 (en) 2018-09-28 2018-09-28 Polarizing film and its manufacturing method
JP2022086272A JP7403584B2 (en) 2018-09-28 2022-05-26 Polarizing film and its manufacturing method

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JP2022105727A JP2022105727A (en) 2022-07-14
JP2022105727A5 true JP2022105727A5 (en) 2022-11-01
JP7403584B2 JP7403584B2 (en) 2023-12-22

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JP (2) JP7082021B2 (en)
KR (1) KR20210065940A (en)
CN (2) CN112789527B (en)
TW (1) TWI826540B (en)
WO (1) WO2020066832A1 (en)

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JPWO2021235330A1 (en) * 2020-05-20 2021-11-25
JPWO2022114100A1 (en) * 2020-11-27 2022-06-02
JP7130789B2 (en) 2021-02-01 2022-09-05 住友化学株式会社 optical laminate
JP7128932B1 (en) 2021-04-15 2022-08-31 住友化学株式会社 optical laminate
JP2022164456A (en) 2021-04-16 2022-10-27 住友化学株式会社 optical laminate
JP2023076153A (en) * 2021-11-22 2023-06-01 住友化学株式会社 optical laminate

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KR101668577B1 (en) * 2008-02-04 2016-10-24 스미또모 가가꾸 가부시키가이샤 Polarizing plate, optical member, and liquid crystal display device
JP5267919B2 (en) * 2008-08-06 2013-08-21 住友化学株式会社 Polarizing plate, optical member, and liquid crystal display device
JP5267920B2 (en) * 2008-08-06 2013-08-21 住友化学株式会社 Polarizing plate, method for manufacturing the same, and liquid crystal display device
JP5120715B2 (en) * 2008-09-10 2013-01-16 住友化学株式会社 Polarizing plate, method for manufacturing the same, optical member, and liquid crystal display device
JP2013137521A (en) * 2011-11-30 2013-07-11 Sumitomo Chemical Co Ltd Composite retardation plate and composite polarizing plate using the same
JP6135134B2 (en) * 2012-06-04 2017-05-31 大日本印刷株式会社 Optical laminate and image display device
TW201534469A (en) * 2014-03-05 2015-09-16 Fujifilm Corp Hard coat film, polarizing plate and image display device containing the same, and method of manufacturing hard coat film
TWI713619B (en) * 2015-10-30 2020-12-21 日商住友化學股份有限公司 Polarizing plate, display device provided with the polarizing plate, and manufacturing method thereof
CN109477925B (en) * 2016-07-21 2022-10-25 住友化学株式会社 Elliptical polarizing plate
JP7195041B2 (en) * 2017-02-08 2022-12-23 住友化学株式会社 Polarizing film, circularly polarizing plate and display device
JP7346863B2 (en) 2018-03-23 2023-09-20 東洋紡株式会社 electroluminescent display device

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