发明公开
EP2426527A3 Polarizing film, optical film laminate comprising polarizing film, and stretched laminate for manufacturing the same
有权
Polarisationsfolie，optisches Filmlaminat mit dem Polarisationsfolie und gestrecktes Laminat zu dessen Herstellung
- 专利标题： Polarizing film, optical film laminate comprising polarizing film, and stretched laminate for manufacturing the same
- 专利标题（中）： Polarisationsfolie，optisches Filmlaminat mit dem Polarisationsfolie und gestrecktes Laminat zu dessen Herstellung
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申请号： EP11179965.6申请日： 2011-09-02
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公开(公告)号： EP2426527A3公开(公告)日： 2012-04-18
- 发明人: Goto, Shusaku , Kitagawa, Takeharu , Miyatake, Minoru , Mori, Tomohiro , Kamijo, Takashi
- 申请人： Nitto Denko Corporation
- 申请人地址： 1-1-2, Shimohozumi Ibaraki-shi, Osaka 567-8680 JP
- 专利权人： Nitto Denko Corporation
- 当前专利权人： Nitto Denko Corporation
- 当前专利权人地址： 1-1-2, Shimohozumi Ibaraki-shi, Osaka 567-8680 JP
- 代理机构： Walker, Philip Martin
- 优先权： JP2010197413 20100903; JP2010269002 20101202
- 主分类号： G02B5/30
- IPC分类号： G02B5/30
摘要：
[Objects]
To provide polarizing film with superior optical properties and having a thickness of 10µm or less
[Means for accomplishing the Objects]
A polarizing film in the form of a continuous web is disclosed. The polarizing film comprises a polyvinyl alcohol (PVA) type resin having a dichroic material impregnated therein. The polarizing film is formed by stretching the PVA type resin, such that the thickness of the polarizing film is decreased to 10µm or less, and. The polarizing film has optical properties which satisfy conditions represented by formulae:
P > -(10 0.929T-42.4 - 1) × 100 (where T
P≥ 99.9 (where T ≥ 42.3)
where T represents a single layer transmittance and P a polarization rate. The polarizing film can be made by providing a laminate comprising a PVA type resin layer formed on a non-crystallizable ester type thermoplastic resin substrate, and subjecting the laminate to a 2-stage stretching process comprised of a preliminary in-air stretching and an in-boric-acid-solution stretching.
To provide polarizing film with superior optical properties and having a thickness of 10µm or less
[Means for accomplishing the Objects]
A polarizing film in the form of a continuous web is disclosed. The polarizing film comprises a polyvinyl alcohol (PVA) type resin having a dichroic material impregnated therein. The polarizing film is formed by stretching the PVA type resin, such that the thickness of the polarizing film is decreased to 10µm or less, and. The polarizing film has optical properties which satisfy conditions represented by formulae:
P > -(10 0.929T-42.4 - 1) × 100 (where T
P≥ 99.9 (where T ≥ 42.3)
where T represents a single layer transmittance and P a polarization rate. The polarizing film can be made by providing a laminate comprising a PVA type resin layer formed on a non-crystallizable ester type thermoplastic resin substrate, and subjecting the laminate to a 2-stage stretching process comprised of a preliminary in-air stretching and an in-boric-acid-solution stretching.
公开/授权文献
- EP2426527B1 Optical film laminate comprising polarizing film 公开/授权日：2013-12-25
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