Patent ID: 7211335

Claim:
A red organic light-emitting compound represented by the following chemical formula 2, wherein X is C, O, S, SO 2 or N; R 1 , R 2 , and R 3 can be the same or different, and are hydrogen, substituted or non-substituted alkyl group containing from 1 to 20 carbon atoms, substituted or non-substituted alkoxy group containing from 1 to 5 carbon atoms, substituted or non-substituted aryl or heteroaryl group containing from 4 to 24 carbon atoms, substituted or non-substituted heterocyclic group containing from 4 to 6 carbon atoms, or fused ring group containing from 4 to 24 carbon atoms; R 4 and R 5 can be the same or different and contain O, and R 4 and R 5 are connected to form a heterocyclic ring; R 7 and R 8 can be the same or different, and are the functional group defined for R1; and n is 1, 2 or 3.