A compound represented by the following Chemical Formula 1: in the Chemical Formula 1, R 1 and R 2 are each independently hydrogen, or two R 1 s or two R 2 s are joined together to form a substituted or unsubstituted C 6-60 aromatic ring; a substituted or unsubstituted C 6-60 non-aromatic ring; or a substituted or unsubstituted C 2-60 heterocyclic ring containing any one or more heteroatoms selected from the group consisting of N, O, S and Si, at least one of the two R 1 s or the two R 2 s are joined together to form the C 6-60 non-aromatic ring; or the C 2-60 heterocyclic ring, L is a substituted or unsubstituted C 6-60 arylene; or a substituted or unsubstituted C 2-60 heteroarylene containing any one or more heteroatoms selected from the group consisting of N, O and S, X is O, S, NZ 3 , or SiZ 4 Z 5 , Z 1 is a substituted or unsubstituted C 6-60 aryl, Z 2 to Z 5 are each independently a substituted or unsubstituted C 1-60 alkyl; a substituted or unsubstituted C 1-60 haloalkyl; a substituted or unsubstituted C 3-60 cycloalkyl; a substituted or unsubstituted C 7-60 aralkyl; a substituted or unsubstituted C 6-60 aryl; or a substituted or unsubstituted C 2-60 heteroaryl containing any one or more heteroatoms selected from the group consisting of N, O and S, the L and Z 2 ; Z 2 and Z 3 ; or Z 4 and Z 5 are optionally connected to each other to form a 5-membered-heterocyclic ring, with the proviso that Z 1 and LX-Z 2 are different from each other and are not connected to each other, L 1 and L 2 are each independently a single bond; a substituted or unsubstituted C 6-60 arylene; or a substituted or unsubstituted C 2-60 heteroarylene containing any one or more heteroatoms selected from the group consisting of N, O and S, and Ar 1 to Ar 4 are each independently a substituted or unsubstituted C 6-60 aryl; or a substituted or unsubstituted C 2-60 heteroaryl containing any one or more heteroatoms selected from the group consisting of N, O and S. R 1 and R 2 are each independently hydrogen, or two R 1 s or two R 2 s are joined together to form a substituted or unsubstituted C 6-60 aromatic ring; a substituted or unsubstituted C 6-60 non-aromatic ring; or a substituted or unsubstituted C 2-60 heterocyclic ring containing any one or more heteroatoms selected from the group consisting of N, O, S and Si, at least one of the two R 1 s or the two R 2 s are joined together to form the C 6-60 non-aromatic ring; or the C 2-60 heterocyclic ring, L is a substituted or unsubstituted C 6-60 arylene; or a substituted or unsubstituted C 2-60 heteroarylene containing any one or more heteroatoms selected from the group consisting of N, O and S, X is O, S, NZ 3 , or SiZ 4 Z 5 , Z 1 is a substituted or unsubstituted C 6-60 aryl, Z 2 to Z 5 are each independently a substituted or unsubstituted C 1-60 alkyl; a substituted or unsubstituted C 1-60 haloalkyl; a substituted or unsubstituted C 3-60 cycloalkyl; a substituted or unsubstituted C 7-60 aralkyl; a substituted or unsubstituted C 6-60 aryl; or a substituted or unsubstituted C 2-60 heteroaryl containing any one or more heteroatoms selected from the group consisting of N, O and S, the L and Z 2 ; Z 2 and Z 3 ; or Z 4 and Z 5 are optionally connected to each other to form a 5-membered-heterocyclic ring, with the proviso that Z 1 and LX-Z 2 are different from each other and are not connected to each other, L 1 and L 2 are each independently a single bond; a substituted or unsubstituted C 6-60 arylene; or a substituted or unsubstituted C 2-60 heteroarylene containing any one or more heteroatoms selected from the group consisting of N, O and S, and Ar 1 to Ar 4 are each independently a substituted or unsubstituted C 6-60 aryl; or a substituted or unsubstituted C 2-60 heteroaryl containing any one or more heteroatoms selected from the group consisting of N, O and S. <EOS>