Color filter for liquid crystal display device and method for producing the color filter

Abstract

A color filter for a liquid crystal display device comprises an optically transparent substrate, a transparent conductive layer formed on the substrate, and a color layer formed on the transparent conductive layer with red, green and blue pixels arranged in a predetermined pattern. The color layer comprises pigments for coloring purpose and transparent conductive particles having a hydrophobic surface. The transparent conductive particles are included from 5% to 50% by volume of the color layer. The color layer may preferably have a specific resistivity of from 10.sup.-1 .OMEGA..multidot.cm to 10.sup.8 .OMEGA..multidot.cm. The transparent conductive particles comprise base transparent conductive particles having a hydrophobic compound bound on their surface by coupling or graft polymerization. A typical process of the color filter production comprises the steps of: (a) forming the transparent conductive layer of a predetermined pattern on the transparent substrate, (b) preparing a micelle colloid dispersion by dispersing a pigment and transparent conductive particles having hydrophobic surface in a medium containing a redox reactive surfactant and an electrolyte, and (c) carrying out an electrolysis in the micelle colloid dispersion by utilizing the transparent conductive layer on the transparent substrate for the anode to deposit the color layer comprising the pigment and the transparent conductive particles on the transparent conductive layer.

Dependencies are inferred from the claim text.