PURPOSE: A negative type photosensitive resin composition suitable for forming a material for a spacer having high sensitivity, excellent development characteristics with no development residue, resistance to alkali, and waterproofness, and a spacer and a liquid crystal display device formed of the resin composition are provided. CONSTITUTION: The photosensitive resin composition and the spacer formed thereby comprises an alkali-soluble resin (A), an alkali-insoluble epoxy-group- containing vinyl polymer, an ethylenic-double-bond-containing compound, an organic peroxide having a benzophenone structure, and a photosensitizer having a coumarin structure, wherein the alkali-soluble resin (A) is obtained by the copolymerization of an unsaturated carboxylic acid monomer (a-1) and a radical polymerizable monomer other than (a-1) containing the compound shown by the following formula 1, wherein R1 is a hydrogen or a methyl group; R2 is a hydrogen or an alkyl group having a carbon number of 1 to 5; and n is an integer of 0 to 5.
Photosensitive resin compositions spacer forming materials color filter forming materials and liquid crystal display elements