PURPOSE: To obtain a mosaic type color filter with which the roughness of picture elements is inconspicuous by putting both substrates provided with plural stripped electrodes in the state of maintaining a prescribed spacing therebetween into an electrodeposition tank contg. coloring electrodeposition painting liquid and making ingenious use of an electrodeposition painting method.

CONSTITUTION: The transparent substrate 1 on which the striped tansparent electrods Y are formed and the substrate 2 on which the striped electrodes X are formed are disposed to face each other via fixing members 2aW22d in such a manner that the stripped electrodes intersect perpendicularly with each other and that a specified spacing is maintained between both substrates 1 and 2. The substrates in such a state are inserted into the electrodeposition tank 17 in which the electrodeposition painting liquid 18 contg. a coloring agent consists of any pigment among three primary colors R, G, B. The every other three electrodes Y on the substrate 1 are commonly connected and are connected to one side of a switch 20 and the other three electrodes X are connected to one side of a switch 23. A DC power source 19 is connected between switches 20 and 23 voltages are selectively impressed to the electrodes.