NOVELTY - An organic electroluminescent (EL) compound is new.    USE - Organic electroluminescent compound for organic EL device particularly organic display or organic solar cell (claimed).    ADVANTAGE - The organic EL compound exhibits high luminous efficiency and improved lifetime.    DETAILED DESCRIPTION - An organic EL compound of formula (I) is new.    L=organic ligand;    R1-R4=1-60C alkyl, 1-60C alkoxy, 3-60C cycloalkyl, halo, tri(1-60C)alkyl silyl, or tri(6-60C) aryl silyl;    R5=H, 1-60C alkyl, halo, or 6-60C aryl;    R6, R7=H, 1-60C alkyl optionally with halo substituent(s), 6-60C aryl, halo, CN, tri(1-60C)alkylsilyl, tri(6-60C)arylsilyl, (1-60C)alkoxy, (1-60C)alkylcarbonyl, (6-60C)arylcarbonyl, di(1-60C)alkylamino, di(6-60C)arylamino, or may be linked via (3-12C) alkylene or (3-12C) alkenylene optionally with fused ring to form an alicyclic ring, or a monocyclic or polycyclic aromatic ring; where the alkyl or aryl of R6 and R7, alicyclic ring, or monocyclic or polycyclic aromatic ring by linkage via (3-12C) alkylene or (3-12C) alkenylene optionally with a fused ring may be further substituted by one or more substituent(s) particularly (1-60C) alkyl optionally with halo substituent(s), halo, CN, tri(1-60C) alkylsilyl, tri(6-60C)arylsilyl, (1-60C) alkoxy, (1-60C) alkylcarbonyl, (6-60C) arylcarbonyl, di(1-60C) alkylamino, di(6-60C) arylamino, Ph, naphthyl, anthryl, fluorenyl, spirobifluorenyl, or indene fluorene containing compound of formula (Ia);and    n=1-3.    An INDEPENDENT CLAIM is included for organic EL device particularly organic display comprising two electrodes and organic layer(s) between the two electrodes. The organic layer comprises EL region comprising organic EL compound and two hosts. The first host(s) is 1,3,5-tricarbazolylbenzene, polyvinylcarbazole, m-biscarbazolylphenyl, 4,4'4''-tri(N-carbazolyl)triphenylamine, 1,3,5-tri(2-carbazolylphenyl)benzene, 1,3,5-tris(2-carbazolyl-5-methoxyphenyl)benzene, bis(4-carbazolylphenyl)silane. The second host(s) is compounds of formulae (8)-(11).    ring A=oxazole, thiazole, imidazole, oxadiazole, thiadiazole, benzothiazole, benzimidazole, pyridine, or quinoline;    ring B=pyridine or quinoline or may be further substituted by 1-60C alkyl, Ph, or naphthyl optionally with 1-60C alkyl substituent(s);    L1, L2= benzene containing compounds of formulae (IIA)-(IIB);    M1=bivalent or trivalent metal;    R91-R94,R101-R104=H, halo, 1-60C alkyl, 6-60C aryl, 4-60C heteroaryl, 5- or 6-membered heterocycloalkyl containing heteroatom(s) particularly N, O, and S, 3-60C cycloakyl, tri(1-60C) alkylsilyl, di(1-60C)alkyl(6-60C)arylsilyl, adamantyl, 7-60C bicycloalkyl, 2-60C alkenyl, 2-60C alkynyl, CN, 1-60C alkylamino, 6-60C arylamino, (6-60C)ar(1-60C)alkyl, 1-60C alkyloxy, 1-60C alkylthio, 6-60C aryloxy, 6-60C arylthio, 1-60C alkoxycarbonyl, 1-60C alkylcarbonyl, 6-60C arylcarbonyl, carboxyl, NO2, or OH;or    R91-R94=may be linked to an adjacent substituent via 3-60C alkylene or 3-60C alkenylene optionally with fused ring to form alicyclic ring, monocyclic, or polycyclic aromatic ring where the (cyclo)alkyl, alkenyl, alkynyl, heterocycloalkyl, (hetero)aryl, arylsilyl, alkylsilyl, alkylamino, or arylamino or the alicyclic ring, monocyclic, or polycyclic aromatic ring formed from it by linkage to an adjacent substituent via 3-60C alkylene or 3-60C alkenylene optionally with fused ring may be further substituted by substituent(s) particularly H, 1-60C alkyl, 6-60C aryl, 4-60C heteroaryl, 5-or 6-membered heterocyclic alkyl containing heteroatom(s) particularly N, O, and S, 3-60C cycloalkyl, tri(1-60C)alkylsilyl, di(1-60C)alkyl(6-60C)arylsilyl, tri(6-60C)aryl silyl, adamantyl, 7-60C bicycloalkyl, 2-60C alkenyl, 2-60C alkynyl, CN, 1-60C alkylamino, 6-60C arylamino, (6-60C) ar(1-60C)alkyl, 1-60C alkyloxy, 1-60C alkylthio, 6-60C aryloxy, 6-60C arylthio, 1-60C alkoxycarbonyl, 1-60C alkylcarbonyl, 6-60C arylcarbonyl, carboxyl, NO2, or OH;    Q=6-60C aryloxy or tri(6-60C)arylsilyl optionally substituted by 1-60C alkyl or 6-60C aryl;    X=O, S, or Se;and    y=0 or 1, when y=0, then M1=bivalent; when y=1 then M1=trivalent metal.