Organic electroluminescent device
AssigneeFuji Photo Film Co., Ltd.
InventorsKazuki Yamazaki, Masayuki Mishima
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Abstract
The invention provides an organic electroluminescent device having one or more organic compound layers between a pair of electrodes, the one or more organic compound layers including at least a luminescent layer, wherein a host material and at least two different luminescent materials including at least one phosphorescent material are contained in the same luminescent layer, and the luminescent layer has a region containing the host material and one luminescent material and a region containing the host material and at least two luminescent materials in the thickness direction of the luminescent layer.
Claims18
An organic electroluminescent device comprising one or more organic compound layers between a pair of electrodes, the one or more organic compound layers comprising at least a luminescent layer, wherein a host material and at least two different luminescent materials including at least one phosphorescent material are contained in the same luminescent layer, and the luminescent layer has a region containing the host material and one luminescent material and a region containing the host material and at least two luminescent materials in the thickness direction of the luminescent layer.
Dependencies are inferred from the claim text.