Patent ID: 7897472

Claim:
A method for forming inductors on a semiconductor wafer comprising: applying a first plating layer over a semiconductor wafer that includes a plurality of integrated circuit dice, wherein the first plating layer includes a seed layer covered by an adhesion layer; applying a first photoresist layer over the first plating layer; etching a first set of one or more recess regions in the first photoresist layer using photolithographic techniques to expose portions of the underlying first plating layer; electroplating metal into the first set of recess regions in the first photoresist layer to form a plurality of magnetic core inductor members, wherein the electroplating of the metal into the first set of recess regions includes stripping away the adhesion layer to expose portions of the seed layer, applying electrical voltage to the semiconductor wafer and plating metal onto the exposed portions of the seed layer; applying a dielectric insulating layer over the plurality of magnetic core inductor members; applying a second plating layer over the dielectric insulating layer; applying a second photoresist layer over the second plating layer; etching a second set of one or more recess regions in the second photoresist layer using photolithographic techniques to expose portions of the underlying second plating layer; electroplating metal into the second set of recess regions to form a plurality of inductor coils; and applying magnetic paste over the plurality of inductor coils wherein the forming of the magnetic core inductor members, the inductor coils and the application of the magnetic paste over the semiconductor wafer forms one or more inductors on each die of the semiconductor wafer.