Patent ID: 9541689
Date: 2017-01-10
CPC Classifications: B32B,G02B

Claim:
1. A multilayer optical film having a structure in which a first resin layer and a second resin layer are alternately laminated, wherein the first resin layer comprises a crystalline naphthalene dicarboxylic-acid polyester and the second resin layer comprises polyethylene terephthalate glycol (PETG), wherein the crystalline naphthalene dicarboxylic-acid polyester of the first resin layer is polyethylenenaphthalate (PEN) manufactured by polycondensation of naphthalatedicarboxylic-acid and ethyleneglycol, wherein a glass transfer temperature of the second resin layer is 100 to 140° C., and wherein the PETG of the second resin layer comprises an amount of cyclohexanedimethanol (CHDM) of 60% to 70%.