Patent ID: 6972081

Claim:
A process for fabricating a vertical spiral inductor within a multichip module package, comprising: electroplating a pattern of bottom metal lines on a substrate; depositing an insulation pattern over a portion of the bottom metal lines; electroplating a pattern of magnetically permeable material to form a magnetically permeable core over a portion of the insulation pattern; depositing polyimide, wherein the insulation pattern, the pattern of magnetically permeable material and the polyimide are deposited in a pattern that defines vias between the polyimide and a core insulation defined by the insulation pattern at the time of depositing the polyimide; electroplating the vias to form electrical connectors that connect the bottom metal lines and are exposed at a top surface of the polymide; electroplating a pattern of top metal lines which is electrically connected to the bottom metal lines through the electrical connectors, wherein the vias are perpendicular to the longitudinal plane of the substrate and the top metal lines and bottom metal lines are arranged to form a number of turns around the core to form the vertical spiral inductor, wherein the top metal lines are staggered with respect to the bottom metal lines; and depositing a top protective layer.