Yellow light emitting compound and organic electroluminescent device of the same

#This application claims the benefit of the Korean Application No. P 2002-4624 filed on Jan. 26, 2002, which is hereby incorporated by reference.

#1. Field of the Invention

#The present invention relates to yellow light emitting compound, and more particularly, to yellow light emitting compound and organic electroluminescent (EL) device of the same.

#The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention:

#In the drawings:

#FIG. 1 illustrates a graph showing an EL efficiency of a yellow light emitting compound in accordance with a preferred embodiment of the present invention;

#Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings.

#The present invention suggests a yellow light emitting compound having the following formula. 3

#Where, X represents O, S, or N—R, wherein R represents a hydrogen, an aliphatic hydrocarbon, or a heterocyclic compound, and Y represent an alkyl group, a cyclic compound, or a heterocyclic compound containing at least one electron absorptive group. As examples of the electron absorptive group, there are cyano group, oxycarbonyl group, acyl group, sulfonyl group, and carbamoyl group.