Patent ID: 7999907

Claim:
A method for producing a color filter comprising the steps of: an inorganic protection film forming step for forming an inorganic protection film on a colored film-side surface of a substrate with the colored film formed thereon by applying direct current to a first target, which includes SnO 2 and an impurity for increasing the electroconductivity thereof, in order to generate plasma for spattering the first target; a transparent electrode forming step for forming a transparent electrode on the surface of the inorganic protection film by applying direct current to a second target which is composed mainly of a transparent electroconductive material in order to generate plasma for spattering the second target; and a transparent electrode patterning step for patterning a transparent electrode by bring the transparent electrode into contact with an etching liquid which dissolves the inorganic protection film at a speed slower than the speed in dissolving the transparent electrode.