Patent ID: 7508586

Claim:
A filtering arrangement comprising: a transparent substrate; and a layer stack on said substrate, said layer stack including: a first metallic layer; first and second dielectric layers on opposite sides of said first metallic layer, said first dielectric layer being nearer to said substrate than said second dielectric layer, each said dielectric layer including a first zinc-based film and including a second zinc-based film with a greater percentage of zinc than said first zinc-based film so as to function as a seed film for a particular metal, said first metallic layer being a layer of said particular metal, said second dielectric layer including an indium-based film between said first metallic layer and said first zinc-based film of said second dielectric layer, said indium-based film being spaced apart from said second zinc-based film of said second dielectric layer by said first zinc-based film of said second dielectric layer; and a repeating pattern of layers to achieve a target sheet resistance, said repeating pattern including alternating layers of metal and dielectric.