Organic electroluminescence device having current injection layer between light emitting layer and cathode

Abstract

Provided is an organic electroluminescence device which operates at a low voltage, has a uniform light emission surface, and can display high-quality images. In an organic electroluminescence device, an anode, a hole transport layer made of an organic compound, a light emitting layer made of an organic compound, and a cathode are stacked in the order named, and an electron injection layer containing a lanthanoid oxide is formed between the light emitting layer and cathode. The anode and/or cathode is made of a transparent conductive material. In another organic electroluminescence device, an anode, a hole transport layer made of an organic compound, a light emitting layer made of an organic compound, and a cathode are stacked in the order named, and an electron injection layer formed by mixing a lanthanoid metal oxide and organic compound is formed between the light emitting layer and cathode.

Dependencies are inferred from the claim text.