Patent ID: 7064411
Filing Date: 2006-06-20
Classification: H01F,H01L

Abstract:
1. A spiral inductor comprising: n levels (n≧2) of electrically conductive films; insulators inserted between pairs of the levels of the electrically conductive films; a continuous spiral interconnect having a spiral shape and including continuous spiral turns, an internal end located inside the spiral shape, and an external end located outside the spiral shape, the spiral interconnect being disposed entirely in an i-th layer (2≦i≦n) of the electrically conductive films, and being electrically connected by contact plugs to an electrically conductive film in a layer adjacent to the i-th layer; a first underpass interconnect, including a k-th layer (1≦k≦n−1) of the electrically conductive films, that is electrically connected to an electrically conductive film in a layer adjacent to the k-th layer, and that is electrically connected through contact plugs to the internal end of the spiral interconnect, where the spiral interconnect and the first underpass interconnect are opposite each other, wherein,