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AssigneeSumitomo Chemical Company, Limited
InventorsTsuyoshi Nakano, Shuji Doi, Takanobu Noguchi, Toshihiro Ohnishi, Yasushi Iyechika
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Disclosed is an organic electroluminescence device having a light emitting layer or a light emitting layer and a charge transport layer disposed between a pair of electrodes at least one of which is transparent or semi-transparent, the light emitting layer comprising a conjugated polymer having a repeating unit represented by the general formula (1): --Ar.sub.1 --CH.dbd.CH-- (1) where Ar.sub.1 represents an aromatic hydrocarbon group having 6 to 14 carbon atoms or a nuclear-substituted group in which the aromatic hydrocarbon group is substituted by one or two selected from the group consisting of hydrocarbon groups having 1 to 22 carbon atoms and alkoxy groups having 1 to 22 carbon atoms. According to the present invention, the use of a polymer intermediate of the conjugated polymer or the conjugated polymer soluble to a solvent as a light emitting material, a charge transport material or a buffer layer to an electrode enables an EL device having a large area to be easily made.
An organic electroluminescence device having a light emitting layer and a charge transport layer disposed between a pair of electrodes at least one of which is transparent or semi-transparent, said charge transport layer comprising a conducting polymer having a repeating unit represented by the general formula (2):
An organic electroluminescence device having a light emitting layer and a charge transport layer disposed between a pair of electrodes at least one of which is transparent or semi-transparent, comprising a conducting polymer layer as a buffer layer disposed between said charge transport layer and said electrode, said conducting polymer having a repeating unit represented by the general formula (2):
Dependencies are inferred from the claim text.