Lowe Hauptman Ham & Berner, LLP
Polarizing film, optical film laminate comprising polarizing film, and stretched laminate for manufacturing the same
A polarizing film includes 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 10 μm or less, and. The polarizing film has optical properties which satisfy conditions represented by formulae:P>−(100.929T-42.4−1)×100 (where T<42.3); andP≧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.
Nitto Denko Corporation
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Takashi Tomohiro Takeharu Shusaku Minoru
Kamijo Mori Kitagawa Goto Miyatake