Compound for organic electronic element, organic electronic element using same, and electronic device thereof

A compound of Formula 1:

• wherein:
• X is O or S,
• R1 to R4 are each independently selected from the group consisting of hydrogen, deuterium, halogen, a C6-C60 aryl group, a fluorenyl group, a C2-C60 heterocyclic group containing at least one heteroatom selected from the group consisting of O, N, S, Si, and P, a fused ring group of a C3-C60 aliphatic ring and a C6-C60 aromatic ring, a C1-C50 alkyl group, a C2-C20 alkenyl group, a C2-C20 alkynyl group, a C1-C30 alkoxyl group, a C6-C30 aryloxy group and -L′-N(Ra)(Rb), and neighboring R1 groups, neighboring R2 groups, neighboring R3 groups, or neighboring R4 groups are optionally linked to each other to form a ring,
• a is an integer of 0 to 4, and b, c and d are each an integer of 0 to 3, and when each of a, b, c and d is an integer of 2 or more, each of the plurality of R1s to R4s may be the same or different from each other,
• Ar1 to Ar3 are each independently selected from the group consisting of a C6-C60 aryl group, a fluorenyl group, a C2-C60 heterocyclic group containing at least one heteroatom selected from the group consisting of O, N, S, Si, and P, a fused ring group of a C3-C60 aliphatic ring and a C6-C60 aromatic ring, a C1-C50 alkyl group, a C2-C20 alkenyl group, a C2-C20 alkynyl group, a C1-C30 alkoxyl group, a C6-C30 aryloxy group and -L′-N(Ra)(Rb), with the proviso that where Ar1 is the heterocyclic group, Ar1 is not C8-C9-heterocyclic group,
• L′ is selected from the group consisting of a single bond, a C6-C60 arylene group, a fluorenylene group, a fused ring group of a C3-C60 aliphatic ring and a C6-C60 aromatic ring, and a C2-C60 heterocyclic group containing at least one heteroatom selected from the group consisting of O, N, S, Si, and P,
• Ra and Rb are each independently selected from the group consisting of a C6-C60 aryl group, a fluorenyl group, a fused ring group of a C3-C60 aliphatic ring and a C6-C60 aromatic ring, and a C2-C60 heterocyclic group containing at least one heteroatom selected from the group consisting of O, N, S, Si, and P, and
• the above aryl group, fluorenyl group, heterocyclic group, fused ring group, alkyl group, alkenyl group, alkynyl group, alkoxyl group, aryloxyl group, arylene group and fluorenylene group are each optionally further substituted with one or more substituents selected from the group consisting of deuterium, halogen, a silane group, a siloxane group, a boron group, a germanium group, a cyano group, a nitro group, a C1-C20 alkylthio group, a C1-C20 alkoxyl group, a C1-C20 alkyl group, a C2-C20 alkenyl group, a C2-C20 alkynyl group, a C6-C20 aryl group, a C6-C20 aryl group substituted with deuterium, a fluorenyl group, a C2-C20 heterocyclic group containing at least one heteroatom selected from the group consisting of O, N, S, Si, and P, a C3-C20 cycloalkyl group, a C7-C20 arylalkyl group and a C8-C20 arylalkenyl group.