Polarizing film, pressure-sensitive-adhesive-layer-attached polarizing film, method for producing polarizing film, and image display device

Abstract

A polarizing film is disclosed including a polarizer having a thickness of 10 μm or less, and a transparent resin layer on at least one surface of the polarizer, wherein the polarizer includes a polyvinyl alcohol-based resin, and has a single-body transmittance T and a polarization degree P representing optical properties satisfying the condition of the following formula: P>−(100.929T−42.4−1)×100 (provided that T<42.3) or P≥99.9 (provided that T≥42.3), and the transparent resin layer is a formed product of a transparent resin layer forming material including a water-based emulsion resin and has a hardness of 0.01 GPa or more. The polarizing film, using a thin-polarizer, can suppress the occurrence of defects such as nano-slits and is further restrained from being lowered in optical properties in a heating and humidifying test to have a high optical reliability.

Dependencies are inferred from the claim text.