Patent ID: 7776671
Filing Date: 2010-08-17
Classification: H01L

Abstract:
1. A method of fabricating an inductor for a semiconductor device, comprising: forming a first interlayer dielectric on a top of a silicon substrate; forming two or more first metal wires on a top of the first interlayer dielectric; forming a second interlayer dielectric on a top of the first interlayer dielectric to cover the first metal wire; forming two or more second metal wires on a top of the second interlayer dielectric so that the second metal wire is connected to the first metal wire; and forming an upper protective film on the top of the second interlayer dielectric to cover the second metal wire, wherein the first and second metal wires are alternately arranged and are formed in a spiral structure, wherein the forming the second interlayer dielectric further comprises forming three or more vias in the second interlayer dielectric, wherein each of the vias connects one of the first metal wires to one of the second metal wires.