JP2017127980A5 - - Google Patents

Claims (6)

A polyester film that is used by being bonded to a transparent conductive substrate made of an amorphous resin, and satisfies the following (1) to (3).
(1) The thermal shrinkage after heat treatment at 150 ° C. for 30 minutes in the MD and TD directions is −0.3% or more and 0.3% or less.
(2) The linear expansion coefficient from 50 ° C. to 150 ° C. is 35 ppm / ° C. or more and 60 ppm / ° C. or less as an average value in the MD and TD directions.
(3) The film haze is 2.0% or less. The polyester film used by being bonded to a transparent conductive substrate made of an amorphous resin according to claim 1, wherein the sum of Young's modulus at 120 ° C. in the MD direction and the TD direction is 1.0 GPa or more and 2.0 GPa or less. The laminated body which laminated | stacked the polyester film of Claim 1 or Claim 2 on the at least one surface of the transparent conductive substrate which consists of an amorphous resin. The laminated body of Claim 3 whose linear expansion coefficient of 50 to 150 degreeC of the transparent conductive substrate which consists of an amorphous resin is 50 ppm / degrees C or more and 120 ppm / degrees C or less by the average value of MD and TD direction. The laminate according to claim 3 or 4, wherein the amorphous resin contains at least one selected from a cycloolefin polymer (COP), a cycloolefin copolymer (COC), and a polycarbonate (PC). The laminate according to any one of claims 3 to 5 , wherein the laminate is used for a purpose of providing a transparent conductive film on the transparent conductive substrate, and the transparent conductive film provided on the transparent conductive substrate is made of indium tin oxide (ITO). body.