RADIATION SENSITIVE COMPOSITION FOR FORMING A COLORED LAYER, COLOR FILTER AND COLOR LIQUID CRYSTAL DISPLAY DEVICE

The invention relates to a radiation sensitive composition for forming a colored layer comprising: (A) colorant, (B) alkali soluble resins, (C) multi-functional monomer and (D) photopolymerization initiating agent, wherein (B) alkali soluble resins contains the copolymer consisted by the following compositions: (b1) at least one selected from the unsaturated carboxylic acid, the unsaturated carboxylic acid anhydride and unsaturated phenol compound; (b2) unsaturated compound with alicyclic carbocycle structure; (b3) unsaturated compound with oxacyclobutane cycle structure. In the composition, the save stability of the alkali soluble resins itself is good, the save stability of the colorant dispersion liquid and the liquid composition are excellent even under high pigment concentration, it will not have the problems of that the fogging ratio is lower in the low light exposure, the pattern edge is crumbling or sunken, it can obtain the excellent pixel and black matrix having good solventresistance and joint performance with the base plate.