Patent ID: 8901542

Claim:
A light-emitting device comprising: a substrate; a first electrode over the substrate; an insulator over the first electrode; a layer over the first electrode; and a second electrode over the layer, wherein the layer comprises an organic compound, the organic compound having a structure consisting of: a stilbene group substituted by an alkyl group having 1 to 4 carbon atoms at 4′-position; a carbazole group substituted by an aryl group having 6 to 25 carbon atoms at 9-position; an unsubstituted aryl group having 6 to 25 carbon atoms; and a nitrogen atom, and wherein the unsubstituted aryl group are directly bonded to the nitrogen atom, wherein the stilbene group is directly bonded to the nitrogen atom at 4-position, and wherein the carbazole group is directly bonded to the nitrogen atom at 3-position.