FUNCTIONAL FILM AND METHOD FOR PRODUCING FUNCTIONAL FILM

摘要

The present invention addresses the problem of providing: a low-cost functional film which is free from damage on an inorganic layer or the like and stably exhibits an aimed performance; and a method for producing this functional film. The problem is solved by a functional film wherein: the retardation value of a gas barrier supporting body is 300 nm or less; the lowermost layer and the uppermost layer of an organic-inorganic laminate are inorganic layers; the difference between the linear expansion coefficient of the gas barrier supporting body and the linear expansion coefficient of a backside protective film is 0-80 ppm/°C; the melting point of a frontside protective film is 80-170°C; the adhesive force between the gas barrier supporting body and an adhesive layer is from 0.01 N/25 mm to 0.15 N/25 mm; and the adhesive force between the frontside protective film and an inorganic layer is from 0.02 N/25 mm to 0.06 N/25 mm.