POLYESTER FILM FOR OPTICAL USE, AND POLARIZING PLATE AND TRANSPARENT CONDUCTIVE FILM USING THE SAME

Japanese Patent JP2015232120

A

PROBLEM TO BE SOLVED: To provide a polyester film that is a biaxially oriented polyester film but shows no interference colors when mounted on a display device such as a liquid crystal display with a large screen, and that has excellent long-term reliability in a high-temperature environment.SOLUTION: The polyester film for an optical use shows a retardation of 1500 nm or less at an angle tilted by 50° with respect to a plane orthogonal to an incident direction of a luminous flux, and has a film density of 1.34 g/cmor more and 1.39 g/cmor less.

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SHIOMI ATSUSHI
MANABE ISAO
SAKAMOTO MITSUTAKA
TAKADA HAGUMU

JP2015097152A

December 24, 2015

May 12, 2015

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TORAY INDUSTRIES

C08J5/18; B32B27/36; D02J1/00; D06M15/643; G02B5/30; H01B5/14

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