Patent ID: 7167073
Filing Date: 2007-01-23
Classification: H01F,H01L

Abstract:
1. A semiconductor device comprising: semiconductor elements; first, second and third metal wire layers disposed at different positions in a thickness direction for electrically connecting said semiconductor elements; a core disposed on the second metal wire layer positioned in a middle in the thickness direction; a plurality of first pieces of the first metal wire layer overlapped with the core and arranged substantially parallel to each other and arranged at a predetermined angle relative to a direction in which the core extends; and a plurality of third pieces of the third metal wire layer overlapped with the core and arranged substantially parallel to each other and arranged at a predetermined angle relative to the direction in which the core extends; wherein the plurality of first pieces and third pieces are alternately connected in series to define a first spiral coil, and an inductor is defined by the coil and the core.