An ink composition for an organic light emitting device comprising: 1) a compound represented by the following Chemical Formula 1, 2) a first solvent of aromatic esters having a boiling point of 260 to 400°C, and 3) a second solvent of aliphatic ethers or aliphatic esters having a boiling point of 200 to 400°C, wherein the boiling point of the first solvent is higher than that of the second solvent: wherein, in Chemical Formula 1, L and L 1 to L 4 are each independently a substituted or unsubstituted C 1-60 alkylene; or a substituted or unsubstituted C 6-60 arylene, Ar 1 and Ar 2 are each independently a substituted or unsubstituted C 6-60 aryl; or a substituted or unsubstituted C 2-60 heteroaryl containing one or more heteroatoms selected from the group consisting of N, O and S, and R 1 to R 4 are each independently hydrogen, deuterium, a substituted or unsubstituted C 1-60 alkyl, a substituted or unsubstituted C 1-60 alkoxy, a substituted or unsubstituted C 6-60 aryl, or a substituted or unsubstituted C 2-60 heteroaryl containing one or more heteroatoms selected from the group consisting of N, 0 and S, Y 1 to Y 4 are each independently hydrogen, or -X-A, with the proviso that at least two of Y 1 to Y 4 are -X-A, X is a single bond, 0, or S, A is a functional group that can be crosslinked by heat or light, 1) a compound represented by the following Chemical Formula 1, 2) a first solvent of aromatic esters having a boiling point of 260 to 400°C, and 3) a second solvent of aliphatic ethers or aliphatic esters having a boiling point of 200 to 400°C, wherein the boiling point of the first solvent is higher than that of the second solvent: wherein, in Chemical Formula 1, L and L 1 to L 4 are each independently a substituted or unsubstituted C 1-60 alkylene; or a substituted or unsubstituted C 6-60 arylene, Ar 1 and Ar 2 are each independently a substituted or unsubstituted C 6-60 aryl; or a substituted or unsubstituted C 2-60 heteroaryl containing one or more heteroatoms selected from the group consisting of N, O and S, and R 1 to R 4 are each independently hydrogen, deuterium, a substituted or unsubstituted C 1-60 alkyl, a substituted or unsubstituted C 1-60 alkoxy, a substituted or unsubstituted C 6-60 aryl, or a substituted or unsubstituted C 2-60 heteroaryl containing one or more heteroatoms selected from the group consisting of N, 0 and S, Y 1 to Y 4 are each independently hydrogen, or -X-A, with the proviso that at least two of Y 1 to Y 4 are -X-A, X is a single bond, 0, or S, A is a functional group that can be crosslinked by heat or light, wherein the boiling point of the first solvent is higher than that of the second solvent: wherein, in Chemical Formula 1, L and L 1 to L 4 are each independently a substituted or unsubstituted C 1-60 alkylene; or a substituted or unsubstituted C 6-60 arylene, Ar 1 and Ar 2 are each independently a substituted or unsubstituted C 6-60 aryl; or a substituted or unsubstituted C 2-60 heteroaryl containing one or more heteroatoms selected from the group consisting of N, O and S, and R 1 to R 4 are each independently hydrogen, deuterium, a substituted or unsubstituted C 1-60 alkyl, a substituted or unsubstituted C 1-60 alkoxy, a substituted or unsubstituted C 6-60 aryl, or a substituted or unsubstituted C 2-60 heteroaryl containing one or more heteroatoms selected from the group consisting of N, 0 and S, Y 1 to Y 4 are each independently hydrogen, or -X-A, with the proviso that at least two of Y 1 to Y 4 are -X-A, X is a single bond, 0, or S, A is a functional group that can be crosslinked by heat or light, <EOS>