Ink composition, light conversion layer, color filter, and light conversion film

Provided is an ink composition which has excellent dispersibility of light-emitting nanocrystal particles and is capable of preventing deterioration of light-emitting characteristics. The ink composition according to the present invention is characterized by containing light-emitting nanocrystal particles, a photopolymerizable component, and a hindered amine compound, and the photopolymerizable component contains at least one photopolymerizable compound having, in Hansen Solubility Parameters (HSP), [delta] D of 16-17.5 MPa 0.5, [delta] P of 2.5-5 MPa 0.5, and [delta] H of 3-6 MPa 0.5. The photopolymerizable compound is preferably a monofunctional or polyfunctional (meth) acrylate. 提供一种发光性纳米晶体粒子的分散性优异、且可防止发光特性的降低的油墨组合物。本发明的油墨组合物的特征在于，含有发光性纳米晶体粒子、光聚合性成分和受阻胺系化合物，所述光聚合性成分含有汉森溶解度参数(HSP)中的δD为16～17.5MPa0.5、δP为2.5～5MPa0.5且δH为3～6MPa0.5的至少一种光聚合性化合物。所述光聚合性化合物优选为单官能或多官能的(甲基)丙烯酸酯。