A compound of the following Chemical Formula 1: in Chemical Formula 1, R1 to R3 are the same as or different from each other, and are each independently selected from the group consisting of hydrogen; deuterium; halogen; a substituted or unsubstituted C1 to C60 alkyl; a substituted or unsubstituted C2 to C60 alkenyl; a substituted or unsubstituted C2 to C60 alkynyl; a substituted or unsubstituted C1 to C60 alkoxy; a substituted or unsubstituted C3 to C60 cycloalkyl; a substituted or unsubstituted C2 to C60 heterocycloalkyl; a substituted or unsubstituted C6 to C60 aryl; a substituted or unsubstituted C2 to C60 heteroaryl; - SiRR'R", and -P(=O)RR', wherein substituted or unsubstituted means being unsubstituted or substituted with one or more substituents selected from the group consisting of deuterium; halogen; -CN; a C1 to C60 alkyl; a C2 to C60 alkenyl; a C2 to C60 alkynyl; a C3 to C60 cycloalkyl; a C2 to C60 heterocycloalkyl; a C6 to C60 aryl; a C2 to C60 heteroaryl; - SiRR'R"; -P(=O)RR'; and -NRR', or being unsubstituted or substituted with a substituent to which two or more substituents among the exemplified substituents are linked, R, R', and R" are the same as or different from each other, and are each independently selected from the group consisting of hydrogen; deuterium; a substituted or unsubstituted C1 to C60 alkyl; a substituted or unsubstituted C3 to C60 cycloalkyl; a substituted or unsubstituted C6 to C60 aryl; and a substituted or unsubstituted C2 to C60 heteroaryl, a is an integer of 1 to 5, b is an integer of 0 to 6, c is an integer of 0 to 8, and when a, b, and c are each 2 or more, a plurality of R1, R2, and R3 is each the same as or different from each other. R1 to R3 are the same as or different from each other, and are each independently selected from the group consisting of hydrogen; deuterium; halogen; a substituted or unsubstituted C1 to C60 alkyl; a substituted or unsubstituted C2 to C60 alkenyl; a substituted or unsubstituted C2 to C60 alkynyl; a substituted or unsubstituted C1 to C60 alkoxy; a substituted or unsubstituted C3 to C60 cycloalkyl; a substituted or unsubstituted C2 to C60 heterocycloalkyl; a substituted or unsubstituted C6 to C60 aryl; a substituted or unsubstituted C2 to C60 heteroaryl; - SiRR'R", and -P(=O)RR', wherein substituted or unsubstituted means being unsubstituted or substituted with one or more substituents selected from the group consisting of deuterium; halogen; -CN; a C1 to C60 alkyl; a C2 to C60 alkenyl; a C2 to C60 alkynyl; a C3 to C60 cycloalkyl; a C2 to C60 heterocycloalkyl; a C6 to C60 aryl; a C2 to C60 heteroaryl; - SiRR'R"; -P(=O)RR'; and -NRR', or being unsubstituted or substituted with a substituent to which two or more substituents among the exemplified substituents are linked, R, R', and R" are the same as or different from each other, and are each independently selected from the group consisting of hydrogen; deuterium; a substituted or unsubstituted C1 to C60 alkyl; a substituted or unsubstituted C3 to C60 cycloalkyl; a substituted or unsubstituted C6 to C60 aryl; and a substituted or unsubstituted C2 to C60 heteroaryl, a is an integer of 1 to 5, b is an integer of 0 to 6, c is an integer of 0 to 8, and when a, b, and c are each 2 or more, a plurality of R1, R2, and R3 is each the same as or different from each other. <EOS>