Heterocyclic compound and organic light-emitting device comprising same

A heterocyclic compound represented by the following Chemical Formula 1:

• wherein, in Chemical Formula 1,
• L1 to L3 are the same as or different from each other, and are each independently a direct bond;
• a substituted or unsubstituted C6 to C60 arylene group;
• or a substituted or unsubstituted C2 to C60 heteroarylene group,
• R1 is a substituted or unsubstituted C6 to C60 aryl group;
• or a substituted or unsubstituted C2 to C60 heteroaryl group,
• R2 and R3 are the same as or different from each other, and are each independently a substituted or unsubstituted C6 to C60 aryl group;
• a substituted or unsubstituted C2 to C60 heteroaryl group;
• or —N(Ra)(Rb), and at least one of R2 and R3 is —N(Ra)(Rb),
• Ra and Rb are the same as or different from each other, and are each independently a substituted or unsubstituted C6 to C60 aryl group;
• or a substituted or unsubstituted C2 to C60 heteroaryl group,
• R4 to R5 are the same as or different from each other, and are each independently hydrogen;
• deuterium;
• a halogen group;
• a cyano group;
• a substituted or unsubstituted C1 to C60 alkyl group;
• a substituted or unsubstituted C3 to C60 cycloalkyl group;
• a substituted or unsubstituted C2 to C60 heterocycloalkyl group;
• a substituted or unsubstituted C6 to C60 aryl group;
• or a substituted or unsubstituted C2 to C60 heteroaryl group,
• a is an integer from 0 to 3, b is an integer from 0 to 5, and when a and b are each an integer of 2 or higher, substituents in the parenthesis are the same as or different from each other, and
• p, q and r are each an integer from 0 to 4, and when p, q and r are each an integer of 2 or higher, substituents in the parenthesis are the same as or different from each other.