Patent ID: 6194318
Filing Date: 2001-02-27
Classification: H01L

Abstract:
A process of making a multiple layered wiring structure, comprising:providing at least one fuse within an area portion of a film over a substrate;forming a plurality of wiring layers over the remaining area portion of said film, such that each said wiring layer is separated by an insulator film;forming, by etching, at least one hole through said insulator film for establishing an electrical interconnection between the adjacent two wiring layers separated by said insulator film;removing, by etching, at least partially said insulator film at a portion above said fuse upon said forming at least one hole;forming a protective film over said plurality of wiring layers;forming, by dry etching using a photoresist as a mask, at least one aperture through said protective film to expose a pad of the adjacent wiring layer beneath said protective film;removing said protective film at a portion above said fuse upon said forming said at least one aperture through said protective film;conducting testing by contacting an electrical probe with said pad; andfocusing laser energy to said fuse in response to result from said conducting testing.