Patent ID: 6469609
Filing Date: 2002-10-22
Classification: H01F,Y10T

Abstract:
A method of fabricating an inductor, comprising:a first step of forming a first metal layer on a first insulating layer formed on a semiconductor substrate, patterning said first metal layer, and forming a second insulating layer on the first metal layer; a second step of patterning said second insulating layer to form a via hole and forming a plug in said via hole; a third step of forming a third insulating layer on the structure formed in the second step and patterning said third insulating layer to form a spiral groove; a fourth step of forming a second metal layer in said spiral groove to form an inductor, said fourth step including a step of successively forming a diffusion barrier layer for preventing said second metal layer from being diffused and a seed layer for facilitating formation of said second metal layer in said spiral groove, before formation of said second metal layer, thereby a multi-layer of said diffusion barrier layer, said seed layer and said second metal layer constitutes a metal line of said inductor; and a fifth step of forming a fourth insulating layer for protecting said inductor from a mechanical force or materials causing a chemical reaction.