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US 7,598,667 B2Granted
Arylamine compound and organic electroluminescence device containing the same
AssigneeIdemitsu Kosan Co., Ltd.
InventorsHisayuki Kawamura, Tetsuya Inoue, Chishio Hosokawa
Life of this patent
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Abstract
Arylamine compounds having at least one spiro bond are provided to the layers of an electroluminescent device. The compounds act as hole transporting and luminescent host materials for both fluorescent and phosphorescent emission. Electroluminescent devices employing the arylamine compounds exhibit excellent luminous efficiency, heat resistance and device life.
Claims10
An arylamine compound represented by the following Formula (1):
- wherein X is a substituted or non-substituted aromatic hydrocarbon group having 6 to 40 carbon atoms or a substituted or non-substituted heterocyclic group having 5 to 40 carbon atoms;
- Ar1, Ar2, Ar3 and Ar4 each are independently a substituted or non-substituted group having 6 to 40 carbon atoms or a substituted or non-substituted heterocyclic group having 5 to 40 carbon atoms;
- provided that at least two of Ar1, Ar2, Ar3 and Ar4 is a group represented by the following Formulae (1-1) to (1-15);
- Ar1, Ar2, Ar3 and Ar4 may be the same as or different from each other, and they may be combined with adjacent ones to form a saturated or unsaturated ring;
- and p is an integer of 1 or 2:
2 more elements
Dependencies are inferred from the claim text.