Organic Electroluminescent device with a defraction grading and luminescent layer
AssigneeNEC Corporation
InventorsAtsushi Oda, Hitoshi Ishikawa, Satoru Toguchi
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Abstract
This invention provides organic electroluminescent devices in which a diffraction grating is formed as a constituent element thereof on the reflecting surface of the cathode or on the light output side, resulting in an improvement in light output efficiency.
Claims16
An organic electroluminescent device having one or more organic layers including a luminescent layer between an anode and a cathode, wherein said device additionally includes a diffraction grating or zone plate as a constituent element which is formed at a location where the diffraction grating or zone plate suppresses total reflection at an interface of said device.
Dependencies are inferred from the claim text.