Compound and organic light emitting device comprising the same

A compound represented by Chemical Formula 1 below:

• In Chemical Formula 1,
• X1 is S or O,
• L1 is a direct bond;
• a substituted or unsubstituted arylene group;
• or a substituted or unsubstituted heteroarylene group,
• Z1 is hydrogen;
• a substituted or unsubstituted N-containing heterocyclic group;
• a substituted or unsubstituted amine group;
• or —P(═O)RaRb,
• m is an integer of 0 to 4, and each L1 is the same as or different from each other when m is 2 or higher,
• n is an integer of 1 to 4, and each Z1 is the same as or different from each other when n is 2 or higher,
• Ar1 is a substituted or unsubstituted aryl group;
• or a substituted or unsubstituted heteroaryl group,
• R1 to R9, Ra, and Rb are the same as or different from each other, and each, independently, selected from the group consisting of hydrogen;
• deuterium;
• a halogen group;
• —CN;
• a substituted or unsubstituted alkyl group;
• a substituted or unsubstituted alkenyl group;
• a substituted or unsubstituted alkynyl group;
• a substituted or unsubstituted alkoxy group;
• a substituted or unsubstituted cycloalkyl group;
• a substituted or unsubstituted heterocycloalkyl group;
• a substituted or unsubstituted aryl group;
• a substituted or unsubstituted heteroaryl group;
• —SiRR′R″;
• —P(═O)RR′;
• and an amine group substituted or unsubstituted with an alkyl group, an aryl group, or a heteroaryl group, and R, R′, and R″ are the same as or different from each other, and each, independently, hydrogen;
• deuterium;
• —CN;
• a substituted or unsubstituted alkyl group;
• a substituted or unsubstituted cycloalkyl group;
• a substituted or unsubstituted aryl group;
• or a substituted or unsubstituted heteroaryl group.