POLARIZING FILM, OPTICAL FILM LAMINATE INCLUDING THE SAME, EXTENDED LAMINATE TO BE USED FOR MANUFACTURING OPTICAL FILM LAMINATE INCLUDING POLARIZING FILM, METHOD FOR MANUFACTURING THE SAME, AND ORGANIC EL DISPLAY DEVICE HAVING POLARIZING FILM

摘要

PROBLEM TO BE SOLVED: To provide a polarizing film of 10 μm or less in thickness that has high optical characteristics, to be used in an organic EL display device.SOLUTION: The polarizing film for an organic EL display device is a continuous web composed of a polyvinyl alcohol resin in which a dichroic substance is oriented; is made into 10 μm or less in thickness because a laminate containing the polyvinyl alcohol resin layer which forms a film on an amorphous ester-based thermoplastic resin substrate is radially extended through a two-stage extension process constituted by aerial auxiliary extension and boric acid underwater extension; and has optical characteristics satisfying the conditions: T≥42.5 and P≥99.5, where T is single transmittance and P is a degree of polarization.