Spiro-type compound and organic light emitting element comprising same

A compound represented by the following Chemical Formula 1:

• wherein, in Chemical Formula 1,
• L is a direct bond;
• a substituted or unsubstituted arylene group;
• or a substituted or unsubstituted heteroarylene group,
• HAr is a substituted or unsubstituted heterocyclic group;
• or a substituted or unsubstituted phosphine oxide group,
• R1 to R4 are the same as or different from each other, and each independently hydrogen;
• deuterium;
• a halogen group;
• a nitrile group;
• a nitro group;
• a hydroxyl group;
• a carbonyl group;
• an ester group;
• an imide group;
• a substituted or unsubstituted amine group;
• a substituted or unsubstituted silyl group;
• a substituted or unsubstituted boron group;
• a substituted or unsubstituted alkyl group;
• a substituted or unsubstituted cycloalkyl group;
• a substituted or unsubstituted alkoxy group;
• a substituted or unsubstituted aryloxy group;
• a substituted or unsubstituted alkylthioxy group;
• a substituted or unsubstituted arylthioxy group;
• a substituted or unsubstituted alkylsulfoxy group;
• a substituted or unsubstituted arylsulfoxy group;
• a substituted or unsubstituted alkenyl group;
• a substituted or unsubstituted aralkyl group;
• a substituted or unsubstituted aralkenyl group;
• a substituted or unsubstituted alkylaryl group;
• a substituted or unsubstituted alkylamine group;
• a substituted or unsubstituted aralkylamine group;
• a substituted or unsubstituted heteroarylamine group;
• a substituted or unsubstituted arylamine group;
• a substituted or unsubstituted arylheteroarylamine group;
• a substituted or unsubstituted arylphosphine group;
• a substituted or unsubstituted phosphine oxide group;
• a substituted or unsubstituted aryl group;
• or a substituted or unsubstituted heterocyclic group, or bond to an adjacent group to form a substituted or unsubstituted ring,
• a is an integer of 0 to 7, b is an integer of 0 to 7, c is an integer of 0 to 5, d is an integer of 0 to 4, n is an integer of 0 to 10, and when a, b, c, d and n are each 2 or greater, structures in the parentheses are the same as or different from each other.