The film and a manufacturing method thereof, a polarizing plate and a liquid crystal display device using the same

The present invention provides a film and a manufacturing method thereof suitable for polarizing plate of the thin film curl is improved, the polarizing plate and the liquid crystal display device using the same. This film is a film that is stuck to the polarizer of the polarizing plate, the film thickness is 10μm or more and 70μm or less, has a B-side which faces the A surface and said A face, A face of the film the refractive index difference between the a face and the opposing surface B 5 × 10