Patent ID: 7998596

Claim:
An aromatic amine derivative represented by the following general formula (1): where: at least one of Ar 1 to Ar 3 is represented by formula (2); and at least one of Ar 1 to Ar 3 is represented by any one of formulae (3) to (7): where: R 2 to R 11 each independently represent a substituted or unsubstituted aryl group having 6 to 50 ring atoms, a substituted or unsubstituted and linear or branched alkyl group having 1 to 50 carbon atoms, a halogen atom, or a cyano group; and R 1 and R 12 each independently represent a hydrogen atom, a substituted or unsubstituted aryl group having 6 to 50 ring atoms, a substituted or unsubstituted and linear or branched alkyl group having 1 to 50 carbon atoms, a halogen atom, or a cyano group; a represents an integer of 0 to 2; b, c, d, f, h, and j each represent an integer of 0 to 4; and e, g, and i each represent an integer of 0 to 3; X represents sulfur or oxygen; and L 1 and L 4 to L 6 each independently represent a substituted or unsubstituted arylene group having 6 to 50 ring atoms; and L 2 and L 3 each independently represent a single bond or a substituted or unsubstituted arylene group having 6 to 50 ring atoms; and where, in formula (1), Ar 1 to Ar 3 which are the groups other than the groups represented by formulae (2) to (7) each independently represent a substituted or unsubstituted aryl group having 6 to 50 ring atoms, wherein a substituent of the aryl group comprises an aryl group having 6 to 50 ring atoms, a linear or branched alkyl group having 1 to 50 carbon atoms, a halogen atom, a cyano group, or a group represented by formula (8): where: L 7 represents a substituted or unsubstituted arylene group having 6 to 50 ring atoms; and Ar 5 and Ar 6 each independently represent a substituted or unsubstituted aryl group having 6 to 50 ring atoms or a substituted or unsubstituted heteroaryl group having 6 to 50 ring atoms, with the proviso that at least one of the following conditions (i) to (iii) is satisfied: condition (i): in formula (1), Ar 1 is represented by formula (2) and Ar 2 and Ar 3 are each represented by any one of formulae (2) to (7); condition (ii): in formula (1), Ar 1 and Ar 2 are each represented by formula (2) and Ar 3 is represented by any one of formulae (2) to (7); and condition (iii): in formula (2), L 1 represents a phenylene group, a biphenylene group, or a fluorenylene group; R 1 represents a phenyl group, a naphthyl group, or a phenanthrenyl group; and a represents 0.