Electrically conductive projections and semiconductor processing

Details Electrically conductive projections and semiconductor processing Electrically conductive projections and semiconductor processing

1994-03-07

1995-12-26

Thomas, Tom

Fishing, trapping, and vermin destroying

437183, 437187, 437944, H01L 2144

Patent

active

054787793

ABSTRACT:
An electrically conductive apparatus includes, a) an electrically non-conducting substrate, the substrate having a base surface and an adjacent elevated surface, the elevated surface being spaced from the base surface by a first distance thereby defining a step having a step wall; b) a capping layer of first electrically conductive material coating the elevated surface only portions of the step wall, the capping layer having outer top and outer side portions; and c) a conductive trace of second electrically conductive material which is different from the first electrically conductive material; the conductive trace overlying the substrate, portions of the step wall not covered by the capping layer, and the outer side portions of the capping layer. Methods are disclosed for producing such a construction, for forming an electrically conductive projection outwardly extending from a substrate, and for providing an electrical interconnection between adjacent different elevation areas on a substrate.

REFERENCES:
patent: 4312117 (1982-01-01), Robillard et al.
patent: 4499656 (1985-02-01), Fabian et al.
patent: 4585991 (1986-04-01), Reid et al.
patent: 4952272 (1990-08-01), Okino et al.
patent: 5032541 (1991-07-01), Sakamoto et al.
patent: 5326428 (1994-07-01), Farnworth et al.

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