OPTICAL FILM COMPRISING PRIMER LAYER CONTAINING POLYESTER RESIN AND POLARIZING PLATE USING SAME

摘要

The present invention relates to an optical film comprising: a base film; and a primer layer formed on at least one surface of the base film and containing a polyester resin and water-dispersive microparticles, the difference in the refractive index between the base film and the polymer layer being 0.03 or smaller, wherein the polyester resin contains polyester glycol formed by a reaction of polybasic acid and polyol, the polybasic acid containing an aromatic carboxylic acid compound and an aliphatic carboxylic acid compound at a mole ratio of 1:9 to 9:1. Superior adhesive strength and a small refractive index difference between the optical film and a functional coating layer lead to a reduction in the rainbow phenomenon, and excellent optical properties.