Metal/Dielectric-Film Interference Color Filters

Color interference filters for individual pixels in solid-state electronic image and display devices would be made of thin metal and dielectric films, according to a proposal. The proposed filters would overcome the primary disadvantage (high cost) of dye color filters like those used in liquid-crystal display devices, digital cameras, and camcorders. The proposed filters would also offer advantages of cost and functionality over color interference filters made of alternating dielectric layers with different indices of refraction.