Patent ID: 8173277

Claim:
A lighting device comprising: a pair of electrodes; and a light emitting layer a quinoxaline derivative between the pair of electrodes, wherein the quinoxaline derivative is expressed by a general formula (1) wherein each of R 1 to R 12 represents one of a hydrogen atom, a halogen atom, an alkyl group, an alkoxyl group, an acyl group, a dialkyl amino group, a diarylamino group, a substituted or unsubstituted vinyl group, a substituted or unsubstituted aryl group, and a substituted or unsubstituted heterocycle group, and wherein Ar 1 represents one of a substituted or unsubstituted biphenyl group and a substituted or unsubstituted terphenyl group, and Ar 2 represents one of a substituted or unsubstituted phenyl group, a substituted or unsubstituted biphenyl group, a substituted or unsubstituted terphenyl group, and a substituted or unsubstituted monocyclic heterocycle group.