Organic electroluminescent element
AssigneeRicoh Company, Ltd.
InventorsKazukiyo Nagai, Chihaya Adachi, Nozomu Tamoto, Yohta Sakon
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AssigneeRicoh Company, Ltd.
InventorsKazukiyo Nagai, Chihaya Adachi, Nozomu Tamoto, Yohta Sakon
Estimating the term…
An organic electroluminescent element having an anode, a cathode, and an organic compound layer provided between the electrodes, the organic compound layer containing an oxadiazole compound of formula (I) or (II): ##STR1## wherein A.sup.1 to A.sup.6 are each an aromatic hydrocarbon group or an aromatic heterocyclic group which may have a substituent; X is a hydrogen atom or a fluorine atom; R.sup.1 and R.sup.2 are each a hydrogen atom, a halogen atom, or an alkyl group which may have a substituent, or an alkoxyl group which may have a substituent; and R.sup.3, R.sup.4 and R.sup.5 are each a hydrogen atom, a halogen atom, an alkyl group which may have a substituent, an alkoxyl group which may have a substituent, or hydroxyl group.
An organic electroluminescent element comprising an anode, a cathode, and an organic compound layer provided between said anode and said cathode, said organic compound layer comprising an oxadiazole compound of formula (I) in an election-transporting effective amount:
Dependencies are inferred from the claim text.