Compound for organic optoelectronic device, composition for organic optoelectronic device and organic optoelectronic device and display deivce

A composition for an organic optoelectronic device, the composition comprising:

• a first compound and a second compound, wherein:
• the compound is represented by Chemical Formula 1, and
• the second compound is represented by Chemical Formula 2;
• or a combination of Chemical Formula 3 and Chemical Formula 4,
• wherein, in Chemical Formula 1,
• R1 to R4 are each independently hydrogen, deuterium, a substituted or unsubstituted Cl to C6 alkyl group, or a substituted or unsubstituted phenyl group,
• n is 0, 1, or 2,
• Ar1 and Ar2 are each independently a substituted or unsubstituted C6 to C30 aryl group or a group represented by Chemical Formula A, provided that at least one of Ar1 and Ar2 is a group represented by Chemical Formula A:
• wherein, in Chemical Formula A,
• X1 is O or S,
• R5 to R7 are each independently hydrogen, deuterium, a substituted or unsubstituted C1 to C6 alkyl group, or a substituted or unsubstituted phenyl group, and
• * is a linking point,
• wherein, in Chemical Formula 2,
• Y1 and Y2 are each independently a substituted or unsubstituted C6 to C20 aryl group, or a substituted or unsubstituted C2 to C30 heterocyclic group,
• L1 and L2 are each independently a single bond, or a substituted or unsubstituted C6 to C20 arylene group,
• Ra and R8 to R11 are each independently hydrogen, deuterium, a cyano group, a substituted or unsubstituted C1 to C10 alkyl group, a substituted or unsubstituted C6 to C20 aryl group, or a substituted or unsubstituted C2 to C30 heterocyclic group, and
• m is 0, 1, or 2;
• wherein, in Chemical Formulae 3 and 4,
• Y3 and Y4 are each independently a substituted or unsubstituted C6 to C20 aryl group, or a substituted or unsubstituted C2 to C30 heterocyclic group,
• adjacent two *'s of Chemical Formula 3 are bonded with Chemical Formula 4,
• other adjacent two *'s of Chemical Formula 3 not being bonded with Chemical Formula 4* are each independently C-La-Rb,
• La, L3, and L4 are each independently a single bond, or a substituted or unsubstituted C6 to C20 arylene group, and
• Rb and R12 to R15 are each independently hydrogen, deuterium, a cyano group, a substituted or unsubstituted C1 to C10 alkyl group, a substituted or unsubstituted C6 to C20 aryl group, or a substituted or unsubstituted C2 to C30 heterocyclic group.