Compound, organic light emitting device including the compound, and flat display device including the organic light emitting device

A compound having an electron injection capability and/or electron transport capability, the compound represented by Formula 1 below:

• wherein R1 and R2 are each independently hydrogen, deuterium, a substituted or unsubstituted C5-C60 alkyl group, a substituted or unsubstituted C6-C60 aryl group, or a substituted or unsubstituted C6-C60 condensed polycyclic group;
• R3 is hydrogen, deuterium, a substituted or unsubstituted C6-C60 aryl group, a substituted or unsubstituted C2-C60 heteroaryl group, or a substituted or unsubstituted C6-C60 condensed polycyclic group;
• X is a connector that is a substituted or unsubstituted C6-C10 arylene group except an anthracene, a substituted or unsubstituted C2-C11 heteroarylene group, or a substituted or unsubstituted C6-C60 condensed polycyclic group;
• Ar1 and Ar2 are each independently a substituted or unsubstituted C2-C60 heteroaryl group, a C6-C60 aryl group substituted with an electron withdrawing group, or a C6-C60 condensed polycyclic group substituted with an electron withdrawing group;
• and
• n is an integer of 1 to 10.