Organic light emitting compound and organic light emitting device comprising the same

An organic light emitting device, comprising:

• a first electrode;
• a second electrode;
• and
• at least one organic layer interposed between the first electrode and the second electrode, said at least one organic layer comprising an organic light emitting compound represented by Formula 1:
• where Ar is a substituted or unsubstituted C6-C26 aryl group;
• X is O, S,
• R1 and R2 are hydrogen, a halogen, a substituted or unsubstituted C1-C12 alkyl group, or a substituted or unsubstituted C6-C26 aryl group;
• R3, R4, R5, R6, R7 and R8 are each independently hydrogen or a substituted or unsubstituted C1-C12 alkyl group;
• and
• R9 through R22 are each independently selected from the group consisting of hydrogen, a substituted or unsubstituted C1-C30 alkyl group, a substituted or unsubstituted C1-C30 alkoxy group, a substituted or unsubstituted C6-C30 aryl group, a substituted or unsubstituted C6-C30 arylalkyl group, a substituted or unsubstituted C6-C30 aryloxy group, a substituted or unsubstituted C5-C30 heteroaryl group, a substituted or unsubstituted C5-C30 heteroarylalkyl group, a substituted or unsubstituted C5-C30 heteroaryloxy group, a substituted or unsubstituted C5-C20 cycloalkyl group, and a substituted or unsubstituted C5-C30 heterocycloalkyl group.