Patent ID: 7185428

Claim:
A method of making a circuitized substrate comprising the step of: providing a substrate having an upper surface; forming a conductive layer having a substantially planar upper surface on and in direct mechanical contact with said upper surface of said substrate; forming a layer of patternable material on and in direct mechanical contact with said substantially planar upper surface of said conductive layer, wherein the layer of patternable material has a total thickness in a direction perpendicular to the substantially planar upper surface of said conductive layer; removing a portion of said layer of patternable material to form a side wall in said patternable layer and to expose a predetermined pattern on said substantially planar upper surface of said conductive layer; removing a portion of said conductive layer under said predetermined pattern to form an interim side wall in said conductive layer; and removing portions of said interim side wall in said conductive layer to form a second side wall and a bottom wall, said bottom wall defined by said upper surface of said substrate, said second side wall being substantially perpendicular with said bottom wall, wherein after the step of removing portions of said interim side wall is performed a remaining portion of said layer of patternable material is in direct mechanical contact with the substantially planar upper surface of the conductive layer and has said total thickness in said direction perpendicular to the substantially planar upper surface of said conductive layer.