Patent ID: 6248656
Filing Date: 2001-06-19
Classification: H01L

Abstract:
A process for forming metallic features on a base comprising the steps of:(a) providing a base with a first electrically conductive layer on a first surface of the base;(b) depositing a first resist over the conductive layer;(c) applying and patterning a main resist atop said first resist so as to leave openings in said main resist at locations where metallic features are to be formed;(d) forming openings in said first resist in registration with the openings in the main resist so that the conductive layer is exposed in said openings of said main resist; then(e) depositing a principal metal in said openings; then(f) removing said main resist while leaving said first resist, thereby exposing edges of the principal metal; and then(g) depositing a jacket of a cover metal onto the edges of the principal metal.