Organic electroluminescence element and illumination device

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United States of America Patent

PATENT NO 9871222
SERIAL NO

15152068

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Abstract

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An object is providing an organic electroluminescence element and an illumination device in which a driving voltage does not increase even when a high-productivity sputtering method is used to form a transparent conductive layer of the organic electroluminescence element of a top or top-and-bottom emission type, and hence which has an improved driving voltage. The organic electroluminescence element includes at least a light emitting layer and a transparent conductive layer. Between the light emitting layer and the transparent conductive layer, a transparent protective layer is disposed. The light emitting layer contains a phosphorescence emitting compound. The transparent protective layer contains a metal oxide. The metal oxide is a molybdenum (VI) oxide, a rhenium (VI) oxide or a nickel (II) oxide in an oxygen deficient state.

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Patent Owner(s)

  • KONICA MINOLTA, INC.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hakii, Takeshi Sagamihara, JP 51 144
Ishidai, Hiroshi Hachioji, JP 25 84

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