Polarizing film, optical film laminate comprising polarizing film, and stretched laminate for manufacturing the same

摘要

Provided is a continuous web of polarizing film for an organic EL display device which has a thickness of 10 µm or less and exhibits high optical characteristics. The polarizing film for an organic EL display device is made of a polyvinyl alcohol type resin having a molecularly oriented dichroic material, and formed through stretching to have a thickness of 10 µm or less and exhibit optical characteristics satisfying the following conditions: T ‰¥ 43; and P ‰¥ 99.5, wherein T is a single layer transmittance, and P is a polarization rate. The polarizing film for an organic EL display device may be prepared by subjecting a laminate comprising a non-crystallizable ester type thermoplastic resin substrate and the polyvinyl alcohol type resin layer formed on the substrate, to 2-stage stretching consisting of preliminary in-air stretching and in-boric-acid-solution stretching.