Electrically conductive projections and semiconductor processing

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

1997-04-30

1998-12-15

Picardat, Kevin

Semiconductor device manufacturing: process

Coating with electrically or thermally conductive material

To form ohmic contact to semiconductive material

438670, 438686, 438902, H01L 2144

Patent

active

058496335

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.

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