POLYESTER FILM AND MANUFACTURING METHOD OF THE SAME

摘要

PURPOSE: A polyester film and a manufacturing method thereof are provided to display uniform brightness by indicating a haze value uniform over the entire surface of a film when adopting an optical film. CONSTITUTION: A polyester film includes: on one surface thereof a film which enables optical diffusion; and on the other surface thereof a polyester polymer base material film which has slip property and/or antistatic property. The polyester polymer base material film except the film which enables optical diffusion has a matrix shaped polyester resin having a melting point of Tm1. The film which enables optical diffusion includes optical diffusing particle having particles of 5 ~ 25μm, and a transparent resin matrix comprises a homopolyester resin of 30-50weight% and a copolymer resin of 50-60weight%.