FORMATION OF COLOR FILTER LAYER OF COLOR LIQUID CRYSTAL DISPLAY DEVICE

摘要

PURPOSE:To eliminate the positional deviation between an electrode part and a color filter part by making transparent the thin metallic film formed on the transparent conductive films by an anodic oxidation method then dyeing the anodized thin metallic film by a dye and subjecting the film to a sealing treatment. CONSTITUTION:The transparent conductive film consisting of tin-added indium oxide ITO is formed on a glass substrate and the thin metallic film which is easily anodized is formed thereon. Al and Mg are adequate to obtain the porous film as the easily anodized metal. Both are then etched to the same pattern and thereafter the ITO provided under the metallic electrode is etched by an etching soln. consisting of ferric chloride. DC or AC is impressed to the glass substrate as an anode side and carbon, iron or stainless steel as a cathode. The anodized film is dyed by the dye at the point of the time when the thin metallic film on the ITO is thoroughly anodized and is made transparent.