International Business Machines Corporation

Leah Marie P Pastel

John Maxwell Cohn

David P Vallett

Thomas Gregory Sopchak

A method for implementing defect inspection of an integrated circuit includes configuring a power bus grid structure on a first metal interconnect level, the power bus grid structure including a first plurality of wire pairs. The first plurality of wire pairs is arranged in a manner such that a first wire in each of the first plurality of wire pairs is electrically coupled to conductive structures beneath the first metal interconnect level, and a second wire in each of the first plurality of wire pairs is initially electrically isolated from the conductive structures beneath the first metal interconnect level. The first wire in each of the first plurality of wire pairs is biased to a known voltage, and a charge contrast inspection is performed between the first wire and the second wire of each of the first plurality of wire pairs.

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Essex, VT, United States of America

Leah Marie P Pastel