Patent ID: 6872476

Claim:
An organic electro-luminescent device comprising one or more organic compound layers sandwiched between a pair of electrodes including an anode and a cathode, at least one of which is transparent or semi-transparent, wherein at least one of the one or more organic compound layers contains at least one of polyurethane compound having a repeating unit represented by the following general formula (I): —(OCONH-A-NHCOO—B) n — General Formula (I) in the general formula (I), A and B each independently represent a substituted or unsubstituted divalent aliphatic or aromatic hydrocarbon, at least one of A and B represents a divalent group represented by one of the following general formulae (II) to (VI), and n represents a number from 10 to 2000, in general formula (II), R 1 represents an alkyl group, an aryl group, a halogen atom, a nitro group, an acyl group, or an amino group, X represents an oxygen atom or a group represented by the above formulae (II-1) to (II-3) in which R 3 and R 4 each independently represent an alkyl group or an aryl group, and m represents an integer from 0 to 2, in general formula (III), R 1 and R 2 each independently represent an alkyl group, an aryl group, a halogen atom, a nitro group, an acyl group, or an amino group, X represents an oxygen atom or a group represented by the above formulae (III-1) to (III-3) in which R 3 and R 4 each independently represent an alkyl group or an aryl group, and m and l each independently represent an integer from 0 to 2, in general formula (IV), R 1 , R 2 , X, m, and l each independently have the same meaning as R 1 , R 2 , X, m, and l in the general formula (III), respectively, and Y represents the chemical structure C═X, wherein C is a carbon in the ring structure and in which X has the same meaning as X in general formula (III), O, S, SO 2 , or NR 5 in which R 5 represents a hydrogen atom, an alkyl group, an aryl group, or an acyl group, in general formula (V), R 1 , R 2 , X, m, and l each independently have the same meaning as R 1 , R 2 , X, m, and l in general formula (III), respectively, in general formula (VI), R 1 , R 2 , X, m, and l each independently have the same meaning as R 1 , R 2 , X, m, and l in general formula (III), respectively.