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Method of direct write desposition of a conductor on a semiconductor

Image Number 2 for United States Patent #4897150.

An improved method of patterning a conductive interconnect on a semiconductor element is disclosed. A catalytic layer of, for example, amorphous silicon is deposited on a semiconductor element. The areas over which a conductive pattern is to be formed is activated by directing a focused laser beam onto the amorphous silicon to form crystallized silicon. The amorphous silicon is then etched away after which a conductive material such as a metal is deposited on the activated crystallized silicon.

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