| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a laminated polyester film which is superior in color tone and also superior in adhesive force with layers used in a variety of FPD applications. Ž<P>SOLUTION: The laminated polyester film is constituted by laminating laminated films on one side or both sides of a polyester film, wherein a film thickness of the laminated film is 30 nm to 120 nm, a refractive index is 1.4 to 1.53, an irregularity of the thickness of the laminated polyester film is 1% or less, a b-value is -0.5 to 0.5 and a plane orientation coefficient fn defined by equation (1): fn=(n<SB>MD</SB>+n<SB>TD</SB>)/2-n<SB>ZD</SB>is 0.16 or more. In the equation (1), n<SB>MD</SB>is a refractive index in surface longitudinal direction, n<SB>TD</SB>is a refractive index in surface width direction and n<SB>ZD</SB>is a refractive index in surface vertical direction. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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