Patent ID: 8389983

Claim:
An organic light emitting apparatus comprising: a substrate; a barrier layer arranged on the substrate; an organic light emitting device comprising a first electrode, an organic light emitting layer, and a second electrode that are sequentially arranged on the barrier layer; and an encapsulation layer covering the organic light emitting device, wherein at least one of the barrier layer and the encapsulation layer is a composite layer arrangement comprising a first inorganic layer, a first organic layer, and a second inorganic layer that are sequentially stacked, wherein a thickness of the first organic layer is in the range of about 1 nm to about 1 μm, and wherein the first organic layer is a polyimide layer produced by a dry process that adjusts said thickness of the first organic layer, the process comprising: depositing a monomer via a technique selected from a group consisting of a thermal evaporation technique, a plasma enhanced chemical vapor deposition (PECVD) technique and an atomic layer deposition (ALD) technique; and then heating the monomer.