Patent ID: 6368952
Filing Date: 2002-04-09
Classification: H01L

Abstract:
A method for forming a microelectronic fabrication comprising:providing a substrate; forming over the substrate a microelectronic device passivated with a patterned first dielectric layer in turn annularly surrounded by a patterned second dielectric layer; and forming over the substrate a patterned conductor layer separated from the microelectronic device by the patterned first dielectric layer and the patterned second dielectric layer, wherein: the patterned first dielectric layer is formed from a first dielectric material having a first diffusion coefficient with respect to a conductor material from which is formed the patterned conductor layer; the patterned second dielectric layer is formed from a second dielectric material having a second diffusion coefficient with respect to the conductor material from which is formed the patterned conductor layer; and the first diffusion coefficient is greater than the second diffusion coefficient.