Patent ID: 8704242

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 (4) and wherein: each of Ar 1 and Ar 2 represents an unsubstituted aryl group or a heteroaromatic group having 4 to 9 carbon atoms; each of R 1 and R 2 represents an alkyl group having 1 to 4 carbon atoms or an aryl group having 6 to 25 carbon atoms; each of R 11 and R 12 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 31 to R 34 represents a hydrogen atom, a methyl group, or a silyl group having a substituent.