Ink composition for organic light emitting device

An ink composition for an organic light emitting device comprising:

• a compound represented by the following Chemical Formula 1,
• a compound represented by the following Chemical Formula 2, and
• a solvent:
• in Chemical Formula 1,
• L and L1 to L4 are each independently a substituted or unsubstituted C6-60 arylene,
• Ar1 and Ar2 are each independently a substituted or unsubstituted C6-60 aryl,
• R1 to R4 are each independently hydrogen, deuterium, a substituted or unsubstituted C1-60 alkyl, a substituted or unsubstituted C1-60 alkoxy, a substituted or unsubstituted C6-60 aryl, or a substituted or unsubstituted C2-60 heteroaryl containing one or more heteroatoms selected from the group consisting of N, O and S,
• Y1 to Y4 are each independently hydrogen, or —X-A, with the proviso that two or more of Y1 to Y4 are —X-A,
• X is O or S,
• A is a functional group which can be crosslinked by heat or light,
• n1 and n4 are each an integer of 0 to 4,
• n2 and n3 are each an integer of 0 to 3,
• in Chemical Formula 2,
• R is C3-60 alkyl;
• C3-60 alkenyl;
• or phenyl substituted with C3-60 alkyl, and
• n is an integer of 4 to 20.