Abstract: The color filter of this invention comprises a transparent substrate, a porous activated film layer formed on the substrate and made of activated alumina or activated silica or a mixture thereof, a colored area or a pattern formed by the dye fixed in the minute pores of the activated film layer, and a coating layer sealingly closing the upper portions of the minute pores of said activated film layer. This color filter is relatively simple and easy to manufacture, superior in resistivity to heat, water, chemicals, solvents, etc. and suitable for use as a color filter in various display devices, particularly liquid crystal display devices.

Abstract: A process for preparing a transparent electrode substrate comprising forming, on an insulated transparent substrate film (A), a polymer compound layer (B) formed from at least one class consisting of polyurethane resin, a polyester resin and an epoxy resin, forming partly thereon a water-soluble coating layer (C), further forming conductive layer (D) having a surface electric resistance of 10 to 10.sup.4 ohm/.quadrature., and dissolving and removing the water-soluble coating layer (C) and the transparent conductive layer (D) thereon by the aid of washing.