Patent ID: 7864017
Filing Date: 2011-01-04
Classification: H01F,H01L

Abstract:
1. An electronic component module, comprising: a base having wiring; and a thin-film magnetic device provided to one side of the base, wherein the thin-film magnetic device comprises: a first magnetic film disposed facing the base; a second magnetic film disposed on an opposite side of the first magnetic film with respect to the base; and a thin-film coil wound so as to encircle the second magnetic film a plurality of times, the thin-film coil comprises: a plurality of first conductor pattern components provided between the first magnetic film and the second magnetic film; a plurality of second conductor pattern components provided on an opposite side of the second magnetic film with respect to the first magnetic film; and a plurality of connecting conductors that connect the first conductor pattern components and the second conductor pattern components in series, wherein a relative magnetic permeability of the second magnetic film is greater than a relative magnetic permeability of the first magnetic film, and a thickness of the second magnetic film is greater than a thickness of the first magnetic film.