the present invention relates to a photosensitive resin composition for color filter and application thereof . the aforementioned photosensitive resin composition includes an alkali - soluble resin , a compound having a vinyl unsaturated group , a photo - initiator , an organic solvent , and a pigment . the alkali - soluble resin is obtained by copolymerizing a vinyl unsaturated monomer having a carboxylic group , a vinyl unsaturated monomer having a silane group , a vinyl unsaturated monomer having an oxetanyl group and an other copolymerizable vinyl unsaturated monomer .