Patent ID: 6660408
Filing Date: 2003-12-09
Classification: C09K,H01L,H05B,Y10S

Abstract:
An organic EL device comprising an anode, a cathode and one or more than one organic thin-film layers including a light-emitting layer between said anode and said cathode, wherein at least one of said organic thin-film layers contains, either singly or as a mixture, a compound represented by one of the following formulas (1), (2) or (3): where Ar1, Ar1â€² and Ar2 each independently represents a group represented by one of the following formulas (4), (5) and (6), and wherein Ar1 and Ar1â€² are different from each other: and wherein Ar3 and Ar4 each independently represents a divalent group represented by one of the following formulas (7) to (11), where R1-R14 represent each independently a hydrogen atom, a halogen atom, a nitro group, a cyano group, a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkenyl group excluding a substituted or unsubstituted styryl group, a substituted or unsubstituted aromatic hydrocarbon group, a substituted or unsubstituted aromatic heterocyclic group, a substituted or unsubstituted amino group, a substituted or unsubstituted alkoxy group, a substituted or unsubstituted aryloxy group, a substituted or unsubstituted alkoxycarbonyl group or a carboxyl group; and each pair of two of R1 to R3, R5-R6, R7-R8, R9-R10, and R13-R14 may form a ring, A1 to A13 represent an atomic group forming a substituted or unsubstituted condensed hydrocarbon ring, wherein when Ar2 is represented by formula (4) or (6), A1 forms a substituted or unsubstituted 1-naphthyl group and A4 and A5 form a substituted or unsubstituted 1-anthryl group or a substituted or unsubstituted 2-anthryl group, and wherein at least one of the substituent groups R1 to R14 or ones existing in the ring structures represented by A1 to A13 is a diarylamino group represented by the formula â€”NAr5Ar6, wherein Ar5 and Ar6 each independently represents a substituted or unsubstituted aryl group having 6-20 carbon atoms.