Patent ID: 6159663
Filing Date: 2000-12-12
Classification: G03F,H01L,H05K

Abstract:
A method of creating a solderable metal layer on an exposed surface of a ceramic, glass, or glass ceramic member comprising the steps of:(a) providing a ceramic, glass, or glass ceramic member having an exposed surface to receive a solderable layer;(b) applying by ion vapor deposition an aluminum containing mixture film on the exposed surface of the member to thereby provide an aluminum containing mixture surface;(c) applying a dry film photoresist to the aluminum containing mixture surface to thereby provide a photoresist film;(d) applying a photomask to the photoresist film to thereby mask selected portions of the photoresist film;(e) exposing the unselected portions of the photoresist film to ultraviolet light;(f) removing the photomask to thereby expose the selected portions of the photoresist film;(g) heating the photoresist film;(h) removing the unselected portions of the photoresist film to thereby selectively expose the aluminum containing mixture surface;(i) etching the exposed aluminum containing mixture surface to remove the exposed aluminum containing mixture and thereby selectively expose the surface of the member;(j) removing the remaining photoresist film to expose the remaining aluminum containing mixture surface;(k) plating of a corrosion inhibiting metal to the remaining aluminum containing mixture surface to thereby provide a corrosion barrier between the aluminum containing mixture and any subsequently applied solderable metal; and(l) plating of a solderable metal to the corrosion barrier to thereby create a solderable metal layer on the member.