Patent ID: 8227980

Claim:
An organic EL device comprising: a substrate having a plurality of sides that form a polygon; a light emitting unit formed on the substrate, and including a first electrode of a first surface shape, a second electrode of a second surface shape and having an electric resistance lower than that of the first electrode, and an organic light emitting layer formed between the first electrode and the second electrode; a first external terminal formed on the substrate and connected to the first electrode, the first external terminal being formed along one of said sides; and a second external terminal formed on the substrate and connected to the second electrode, the second external terminal being formed at a vertex formed between said sides, wherein a first connecting surface of the first external terminal is connected to external power that is applied to the first connecting surface, a second connecting surface of the second external terminal is connected to external power that is applied to the second connecting surface, and a size of the first connecting surface is larger than a size of the second connecting surface.