Gas barrier film, film deposition method and film deposition device

摘要

A gas barrier film comprises: a base film; and a silicon nitride layer deposited on a surface of the base film, wherein in a direction of a thickness of the silicon nitride layer, a first mean density of a region of the silicon nitride layer closer to the base film and having a 20% thickness of the silicon nitride layer is higher than a second mean density of a region opposite from the base film and having a 20% thickness of the silicon nitride layer, and a third mean density of a middle region having a 20% thickness of the silicon nitride layer lies between the first mean density and the second mean density.