International Business Machines Corporation

Patrick E Spencer

David Clifford Long

Jon Alfred Casey

Mark J LaPlante

Thomas Anthony Wassick

Krystyna Waleria Semkow

Brian Richard Sundlof

Robert Anthony Rita

Richard Francis Indyk

Donald Rene Wall

Glenn A Pomerantz

James G Balz

Kathleen M Wiley

Lori A Maiorino

Arthur Gilman Merryman

Michael Berger

Charles J Hendricks

Richard Philip Surprenant

Jerome D Cohen

A multilayer ceramic repair process which provides a new electrical repair path to connect top surface vias. The repair path is established between a defective net and a redundant repair net contained within the multilayer ceramic substrate. The defective net and the repair net each terminate at surface vias of the substrate. A laser is used to form post fired circuitry on and in the substrate. This is followed by the electrical isolation of the defective net from the electrical repair structure and passivation of the electrical repair line.

Electronic package repair process

A method and structure to form surface plating metallization on a substrate. Two layers of tape are applied to the surface of the substrate. A first path is cut through both layers of tape exposing the substrate surface. The first path connects at least one conductive via on the top surface of the substrate. A second path is cut through the second layer of tape exposing the first layer of tape. The second path is routed from the first path to an edge of the substrate A seed layer is deposited over the surface of the second layer of tape thereby creating a seeded plating path in the first path and a sacrificial seeded conduction path in the second path. Connecting the sacrificial seeded conduction path to a plating potential at the edge of the substrate creates a plated path on the surface of the substrate. The sacrificial path is removed when the tape is removed.

Method of selective plating on a substrate

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Rochester, NY, United States of America

Patrick E Spencer