Organic electroluminescent device and method for producing same

A method for producing an organic electroluminescent device including:

• an element substrate including a substrate and a plurality of organic electroluminescent elements supported by the substrate;
• and
• a thin film encapsulation structure formed on the plurality of organic electroluminescent elements,
• wherein:
• the thin film encapsulation structure includes at least one complex stack body including:
• a first inorganic barrier layer,
• an organic barrier layer in contact with a top surface of the first inorganic barrier layer, the organic barrier layer including a plurality of solid portions discretely distributed, and
• a second inorganic barrier layer in contact with the top surface of the first inorganic barrier layer and a top surface of each of the plurality of solid portions of the organic barrier layer;
• and
• the plurality of solid portions include a plurality of solid portions discretely provided and each having a recessed surface,
• wherein the method comprises a step of forming the complex stack body, including the steps of:
• preparing, in a chamber, the element substrate having the first inorganic barrier layer formed thereon;
• supplying a vapor-like or mist-like photocurable resin into the chamber;
• condensing the photocurable resin on the first inorganic barrier layer to form a liquid film;
• irradiating the liquid film of the photocurable resin with light to form a photocurable resin layer;
• and
• partially ashing the photocurable resin layer to form the organic barrier layer.