| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a polyester film for protecting a polarizing plate, which can reduce light interference coloring caused when disposed in a crossed Nicol state as a polarizing plate. <P>SOLUTION: There are provided a polyester film for protecting a polarizing plate in which the film has an in-plane retardation of 500 nm or less and a plane orientation degree ΔP of 0.110 or less and a method for manufacturing the polyester film for protecting a polarizing plate in which a melt extrusion polyester sheet is biaxially stretched and heat-treated to form a film and a draw ratio in a lateral direction of the film is 4.0 times or more. <P>COPYRIGHT: (C)2013,JPO&INPIT |
