Patent ID: 8586206

Claim:
An organic electroluminescence device comprising: a cathode, an anode, and one or more organic thin films including an emitting layer therebetween, wherein one or more layers of the organic thin films comprise an aromatic amine derivative represented by the following formula (1): wherein one or more of Ar 1 to Ar 3 are represented by the following formula (2): wherein X 1 to X 3 are independently a nitrogen atom or CR 2 , provided that two of X 1 to X 3 are a nitrogen atom and X 1 and X 3 are not simultaneously a nitrogen atom, R 1 is a linear or branched alkyl group having 1 to 10 carbon atoms, a cycloalkyl group having 3 to 10 ring carbon atoms, a substituted or unsubstituted silyl group, an aryl group having 6 to 50 ring carbon atoms, a heteroaryl group having 5 to 50 ring atoms, a halogen atom or a cyano group, R 2 is a hydrogen atom or a group represented by R 1 , a is an integer of 1 to 2 and n is an integer of 0 to 3, L 1 is a substituted or unsubstituted arylene group having 6 to 50 ring carbon atoms, L 2 is a substituted or unsubstituted arylene group having 6 to 50 ring carbon atoms, or a substituted or unsubstituted heteroarylene group having 5 to 50 ring atoms, Ar 1 to Ar 3 that are not the group of formula (2) are independently a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms, when L 1 , L 2 and Ar 1 to Ar 3 that are not the group of formula (2) have a substituent, the substitutes are independently a linear or branched alkyl group having 1 to 10 carbon atoms, a cycloalkyl group having 3 to 10 ring carbon atoms, a substituted or unsubstituted silyl group, an aryl group having 6 to 14 ring carbon atoms, a heteroaryl group having 5 to 20 ring atoms, a halogen atom or a cyano group, when two or more of Ar 1 to Ar 3 are the groups of formula 2, the groups of formula (2) may be the same or different, when a is 2, R 1 s may be the same or different, and when n is 2 or more, L 2 s may be the same or different.