Patent ID: 6497969
Filing Date: 2002-12-24
Classification: C08G,H01L,Y10S,Y10T

Abstract:
An electroluminescent device comprising a transparent electrode layer, a metallic electrode layer, and an organic interlayer disposed between the electrode layers wherein the organic interlayer comprises an organic luminescent layer and a hole transport layer comprising an organic luminescent material and a hole transport agent, respectively, and at least one layer of the organic luminescent and hole transport layers contains a polyetherimide of formula (IIâ€²): wherein, B is a moiety derived from a diamine compound selected from the group consisting of 4,4â€²-diaminodiphenylether, 4,4â€²-diaminodiphenylmethane, 2,2-bis(4-aminophenyl)propane, 3,5-diaminotoluene, 3,4â€²-diaminodiphenylether, 3,4â€²-diaminodiphenylmethane, 1,4-phenylene diamine, 3,3â€²-diaminodiphenylether, 3,3â€²-diaminodiphenylmethane, 2,5-dimethyl-p-phenylene diamine, 2,3,5,6-tetramethyl-p-phenylene diamine, 4,4â€²-diaminobenzophenone, 4,4â€²-diaminobiphenyl, 3,3â€²-diaminobenzophenone, 4,4â€²-diaminodiphenylsulfide, &agr;,&agr;â€²-bis(4-aminophenyl)-1,4-diisopropylbenzene, 2,2-bis[4-(4-aminophenoxy)phenyl]propane, 1,4-bis(4-aminophenoxy)benzene, 2,2-bis[4-(3-aminophenoxy)phenyl]hexafluoropropane, 2,6-diaminotoluene, 4,4â€²-diaminodiphenylsulfone, 3,3â€²-diaminodiphenylsulfone, 3,3â€²-bis(aminophenyl)-hexafluoropropane, 2,2â€²-bis(3-amino-4-hydroxylphenyl)hexafluoropropane, 4,4â€²-bis(2-chloroanilino)methane, 4,4â€²-bis(aminocyclohexyl)methane, 2,2â€²-bis(3-amino-4-methyl-phenyl)hexafluoropropane, 3,4â€²-diaminobenzophenone, 4,4â€²-diaminobibenzyl, 4,4â€²-bis(aminophenyl)hexafluoropropane, 1,3â€²-bis(m-aminophenoxy)benzene, 4,4â€²-methylene-bis-o-toluidine, 3,3â€²-diamino-4,4â€²-dihydroxybiphenyl, 4,4â€²-diaminooctafluorodiphenyl, 4,4â€²-bis(aminophenyl)selenide and 2,4-diamino-6-phenyl-1,3,5-triazine; n is an integer of 2 or higher; and C is