Patent ID: 6884477

Claim:
An electroluminescence device comprising a pair of electrodes and a luminescence layer and a carrier transporting layer disposed between the electrodes, wherein the carrier transporting layer comprises a liquid crystal compound represented by the following formula (I): R—X—A—B—X′—R′ (I), wherein A and B independently denote a naphthalene-2,6-diyl skeleton optionally substituted with one or two substituents selected from the group consisting of F, Cl, Br, CH 3 and CF 3 , at least one of A and B comprising a naphthalene-2,6-diyl skeleton having one to four CH groups replaced with N; wherein X and X′ independently denote a single bond, —O—, —S—, —OOC— or —COO—; and wherein one of R and R′ denotes H, F, Cl, Br, CF 3 or a linear or branched alkyl group having 1-20 carbon atoms, and the other one of R and R′ denotes a linear or branched alkyl group having 3-20 carbon atoms, said alkyl groups for R and R′ being independently capable of including one methylene group which can be replaced with —O—, —S—, —CH═CH— or —C═C— with the proviso that heteroatoms are not adjacent to each other.