The invention provides a method for producing a partition wall for a color filter having: forming a photosensitive resin layer containing a radical polymerizable monomer, a photopolymerization initiator, a binder and a colorant on at least one surface of a substrate; and exposing the photosensitive resin layer to light at an illumination intensity of 50 mW/cm2 or more in a pattern shape and developing the photosensitive resin layer to form a partition wall that separates color pixel portions, wherein liquid droplets are applied to form the color pixel portions. The invention further provides a substrate having the partition wall for a color filter, a color filter for display element having the substrate and color pixel portions, a method for producing the color filter, and a display device having the color filter for a display element and a method for producing the display device.