According to the present invention, there is provide a coated film which can be suitably used in various applications in which it is required to exhibit a good adhesion property to a solvent-free type resin layer, for example, as a member for a prism sheet or a microlens employed in a backlight unit for liquid crystal displays, etc. The present invention relates to a coated film comprising a polyester film and a coating layer formed on at least one surface of the polyester film which is prepared from a coating solution comprising a polyurethane resin comprising a carbon-carbon double bond moiety in an amount of not less than 0.5% by weight based on a total weight of the polyurethane resin, in which the coating film is used for forming, on a surface of the coating layer, a functional layer prepared from a solvent-free type active energy ray-curable coating material, and the carbon-carbon double bond moiety in the coating layer is capable of reacting with a carbon-carbon double bond in a compound constituting the functional layer.