Patent ID: 8178885

Claim:
A light emitting device comprising: an anode; a first layer over the anode, the first layer comprising an organic compound; and a cathode over the first layer, wherein the organic compound is represented by General Formula (1) wherein: each of Ar 1 to Ar 3 represents an aryl group having 6 to 12 carbon atoms or a heteroaromatic group having 4 to 9 carbon atoms; each of R 1 to R 3 represents an alkyl group having 1 to 4 carbon atoms or an aryl group having 6 to 25 carbon atoms; each of R 11 to R 13 represents a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, or an aryl group having 6 to 25 carbon atoms; and each of R 21 to R 23 represents a hydrogen atom, a methyl group, or a methoxy group.