| 摘要 |
<p>The present invention provides a biaxially oriented polyester film which is facilitated in detection of defects thereon when being subjected to optical inspection and can be minimized in amount of oligomers deposited on a surface thereof, and can be suitably used not only for production of constituting members of various displays, for instance, production of constituting members of liquid crystal displays such as a polarizing plate and a retardation plate, production of PDP constituting members, and production of organic EL constituting members, but also in various optical applications, as well as a release film. The biaxially oriented polyester film comprises a polyester film having a main orientation axis which extends in a direction having an angle of not more than 11°, and a film haze value of 10 to 25%, and a coating layer comprising a silane compound which is formed on at least one surface of the polyester film, in which an amount of an oligomer deposited on a surface of the coating layer when heating the film at 180°C for 5 min is not more than 3.0 mg/m 2 ; and the release film comprises the biaxially oriented polyester film, and a release layer formed on the coating layer of the biaxially oriented polyester film, the release film having a peel force of 10 to 100 mN/cm.</p> |
