Novel compound and organic light-emitting device comprising the same

A compound represented by the following Chemical Formula 1:

• in Chemical Formula 1,
• X is a single bond, O, or S,
• R1 and R2 are each independently, hydrogen;
• deuterium;
• a halogen group;
• a nitrile group;
• a silyl group;
• a substituted or unsubstituted C6-60 aryl;
• or a substituted or unsubstituted C2-60 heteroaryl containing one or more selected from the group consisting of N, O, and S,
• a is an integer of 0 to 3,
• b is an integer of 0 to 4,
• L1 to L3 are each independently a single bond;
• a substituted or unsubstituted C6-60 arylene;
• or a substituted or unsubstituted C2-60 heteroarylene containing one or more selected from the group consisting of N, O, and S, and
• Ar1 and Ar2 are each independently a substituted or unsubstituted C6-60 aryl;
• or a substituted or unsubstituted C2-60 heteroaryl containing one or more selected from the group consisting of N, O, and S;
• wherein at least one of Ar1 and Ar2 is a substituent represented by Chemical Formula 2 below;
• in Chemical Formula 2,
• R3 is deuterium;
• a halogen group;
• a nitrile group;
• a silyl group;
• a substituted or unsubstituted C6-60 aryl;
• or a substituted or unsubstituted C2-60 heteroaryl containing one or more selected from the group consisting of N, O, and S,
• R11 to R14 are each independently —CH3, —CH2D, —CHD2, or —CD3,
• c is an integer of 0 to 7, and
• the silyl group is —Si(Z1)(Z2)(Z3), wherein Z1 to Z3 are each independently a substituted or unsubstituted C1-60 alkyl;
• or a substituted or unsubstituted C6-60 aryl.