Patent ID: 8025986

Claim:
An organic electroluminescent element in which organic layers having an emitting layer for emitting red light are formed between the anode and the cathode, characterized in that the emitting layer is formed from a mixture comprised of at least one species of the styryl compounds represented by the general formula given below and an electron transporting material selected from the group consisting of 8-hydroxyquinoline aluminum (Alq 3 ), anthracene, naphthalene, phenanthrene, pyrene, chrysene, perylene, butadiene, coumarin, acridine, and stilbene, and derivatives thereof, and further comprising at least one member from the group consisting of DCM, porphins, phthalocyanines, perylene compounds, Nile red, or squarilium compounds, Y—CH═CH—X General formula where, in the general formula, X denotes any group represented by the general formulas (1) to (13) shown below; (where, in the general formula, R 1 to R 5 may be identical or different, and at least one of them is a group selected from halogen atom, nitro group, cyano group, trifluoromethyl group, alkyl group (optionally substituted), and alkoxyl group (optionally substituted); and in the general formulas (2) to (13), each of R 6 to R 109 , which may be identical or different, denotes a group selected from halogen atom, nitro group, cyano group, trifluoromethyl group, alkyl group (optionally substituted), and alkoxyl group (optionally substituted); also, in the general formula, Y denotes any group represented by the general formulas (14) to (16) shown below; (where, in the general formula (14) above, each of Z 1 and Z 2 , which may be identical or different, is a group selected from hydrogen atom, alkyl group (optionally substituted), and aryl group (optionally substituted); and in the general formulas (15) and (16) above, each of R 110 to R 126 ,which may be identical or different, denotes a group selected from hydrogen atom, alkyl group (optionally substituted), aryl group (optionally substituted), alkoxyl group (optionally substituted), halogen atom, nitro group, cyano group, and trifluoromethyl group).