Provided is an organic EL device capable of maintaining an excellent luminous efficiency over an extended period of time, particularly in a top emission-type EL device. The organic EL device of the invention includes a substrate and an organic EL element formed on the substrate. The organic EL element is composed of a bottom electrode, an organic EL layer, a top electrode and a protective layer. The protective layer is composed of one or a plurality of inorganic films, and at least one of the one or plurality of inorganic films is an SiON:H film having stretching-mode peak area ratios, as determined by infrared absorption spectroscopy, that include an absorption area ratio of N—H bonds to Si—N bonds in the SiON:H film which is not less than 0.04 but not more than 0.07 and an absorption area ratio of Si—H bonds to Si—N bonds which is not more than 0.15.