TECHNOLOGY FOCUS - INSTRUMENTATION AND TESTING - Preferred Components: The organic electroluminescent device is an organic display comprising an organic electroluminescent compound having the electroluminescent peak with wavelength of not more than 500 nm, and an organic electroluminescent compound having the electroluminescent peak with wavelength of not less than 560 nm, at the same time.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preparation (Disclosed): Preparation of (I) comprises: reacting 2,7-dichloro-anthraquinone with bromine compound of formulae (R1-Br) (a1) and (R2-Br) (b1) in the presence of n-butyl lithium to give a substituted anthraquinone compound of formula (A1); reacting (A1) with sodium hypophosphite to give another substituted anthraquinone compound of formula (A2); and reacting (A2) with substituted aryl amine compounds of formulae (Ar1-NH-Ar2) (c1) and (Ar3-NH-Ar4) to give (I). Preferred Components: The organic layer comprises arylamine compounds or styrylarylamine compounds. The organic layer comprises one or more metal(s), which are organic metals of group 1, group 2, fourth period and fifth period transition metals, lanthanide metals or d-transition elements. The organic layer comprises an electroluminescent layer (5) and a charge generating layer. In the organic electroluminescent device, a mixed region of reductive dopant and organic substance, or a mixed region of oxidative dopant and organic substance is placed on the inner surface of one or both electrode(s) among the pair of electrodes. SPECIFIC COMPOUNDS - 5137 Compounds (I) are disclosed e.g. 9,10-dicyclohexyl-N,N,N',N'-tetraphenyl-anthracene-2,7-diamine of formula (Ia), 9,10-di-tert-butyl-N,N,N',N'-tetraphenyl-anthracene-2,7-diamine, 9,10-di-tert-butyl-N,N,N',N'-tetra-naphthalen-2-yl-anthracene-2,7-diamine, 9,10-di-tert-butyl-N,N,N',N'-tetra-naphthalen-1-yl-anthracene-2,7-diamine and N,N,N',N'-tetrakis-biphenyl-4-yl-9,10-di-tert-butyl-anthracene-2,7-diamine.    EXAMPLE - Bromocyclohexane (44.1 g) was dissolved in dry tetrahydrofuran solvent (500 ml), and then 2.5M n-butyl lithium (in n-hexane) (130 ml) was added at -78 degrees C. After stirring for 1 hour, 2,7-dichloroanthracene-9,10-dione (30 g) was added to the mixture, and the resultant mixture was stirred while slowly raising the temperature to room temperature. After 17 hours, water was added, and the mixture was stirred for 30 minutes and extracted with ethyl acetate (500 ml). The extract was washed with water (500 ml), and worked up to give 2,7-dichloro-9,10-dicyclohexyl-9,10-dihydro-anthracene-9,10-diol (AA1). A reaction vessel was charged with (AA1) (21.3 g), potassium iodide (31.7 g), sodium hydrophosphite (40.5 g) and acetic acid (300 ml), and the mixture was stirred under reflux at 120 degrees C. After 15 hours, water (500 ml) was added to the mixture, and the resultant mixture was stirred for 1 hour. The precipitate obtained from filtration under reduced pressure was washed three times with water (300 ml) and once with acetone (300 ml), and dried to give 2,7-dichloro-9,10-dicyclohexyl-anthracene (BB1). A reaction vessel was charged with (BB1) (12.5 g), diphenylamine (15.4 g), palladium acetate (0.34 g), tributylphosphine (0.6 g), sodium tert-butoxide (9.3 g) and toluene (250 ml), and the mixture was stirred under reflux in the presence of nitrogen atmosphere. After 8 hours, the mixture was cooled to room temperature, and extracted with ethyl acetate (400 ml), and the extract was dried under reduced pressure and worked up to give 9,10-dicyclohexyl-N,N,N',N'-tetraphenyl-anthracene-2,7-diamine (9.2 g, 44%).