Patent ID: 8324617

Claim:
An organic electroluminescence element, comprising: a substrate; an anode metal layer above the substrate, the anode metal layer including an inner region between a pair of outer regions; a metal oxide layer on the inner region and the outer regions of the anode metal layer, the metal oxide layer formed by oxidation of a top surface of the anode metal layer; an insulating layer above the metal oxide layer and the outer regions of the anode metal layer; a hole transport layer above the metal oxide layer and the inner region of the anode metal layer, the hole transport layer comprising a hole-transporting organic material; an organic luminescent layer above the hole transport layer; and a cathode layer above the organic luminescent layer for injecting electrons into the organic luminescent layer, wherein a thickness of the metal oxide layer on the inner region of the anode metal layer is greater than a thickness of the metal oxide layer on the outer regions of the anode metal layer.