White light emission organic electroluminescent element, illuminating device and display
AssigneeKonica Minolta Holdings, Inc.
InventorsYoriko Nakayama, Toshihiko Iwasaki, Kunimasa Hiyama
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Abstract
Disclosed is a coating type organic EL element having excellent chromaticity stability to driving current, excellent chromaticity stability during continuous driving and excellent color rendering property.
Claims16
A white light emission organic electroluminescent element comprising an anode side electrode, a cathode side electrode and at least one constituent layer provided between the anode side electrode and the cathode side electrode, the constituent layer comprising one or more light emission layers, in which at least one of the light emission layers contains a plurality of light emission materials having a different emission color, wherein the emission spectrum of the element has at least three emission maximums in a wavelength region of from 420 nm to 650 nm and an emission minimum in a wavelength region of from 480 nm to 510 nm, and has two adjacent emission maximum wavelengths, a wavelength difference between the two adjacent emission maximum wavelengths being from 30 nm to 70 nm.
Dependencies are inferred from the claim text.