the present invention provides an improved process for forming a color filter for a color display . the process comprises : forming a transparent electroconductive layer on a substrate , forming a negative type photosensitive resin layer having a desired color by electrodeposition on the transparent electroconductive layer , exposing the photosensitive resin layer to light through a negative mask having a desired pattern followed by developing to form a patterned color layer , and effecting the steps and necessary times to form patterned layers having required colors .