Michael Allen Rodder, Gina Cha, Gil Tovar, Kah Chin Cheong, Christopher Penley
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Defect Isolation in Advanced Nodes Large Circuitry Structures using a Combination of FIB Circuit Edits and Passive Voltage Contrast
Abstract In this paper, we discuss and showcase a 2-step defect isolation methodology by combining Focused Ion Beam “circuit editing” (FIB circuit edit) and Passive Voltage Contrast (PVC) imaging. The combo technique is an effective, robust, and time saving method for isolating defects in large area circuit structures for advanced nodes. The application of FIB circuit edits successfully enhanced the PVC efficiency in defect isolation. More importantly, the developed 2-step methodology improves failure analysis (FA) success rate and quality, and reduces FA turn-aroundtime (TAT).
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