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US 5,610,309 AGranted
Electroluminescent device comprising oxadiazole compounds luminescent material, oxadiazole compounds for the device, and method of producing oxadiazole compounds
AssigneeRicoh Company, Ltd.
InventorsMasafumi Ohta, Yohta Sakon, Toshihiko Takahashi, Chihaya Adachi, Kazukiyo Nagai
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Abstract
An electroluminescent device is composed of a negative electrode, a positive electrode, and an organic compound layer which is interposed between the negative electrode and the positive electrode and includes at least one oxadiazole compound with a plurality of aryl oxadiazole structures. Novel oxadiazole compounds for use in the electroluminescent device and a method of producing the oxadiazole compounds are disclosed.
Claims3
A novel oxadiazole compound represented by formula (III-1):
- ##STR343## wherein Ar.sup.21 and Ar.sup.22 each is selected from the group consisting of naphthyl group, anthryl group, phenanthryl group, biphenylyl group and an aromatic heterocyclic group.
Dependencies are inferred from the claim text.