Conductive Thin Film Fail Detection in 20 nm and 14 nm Technologies

Autor: Y. Ma, K. Kalaiazhagan, Satish Kodali, C. Zhang, T. Vijay, Felix Beaudoin, C.-K. Oh, T. Schaeffer, J. Yu, Donald Nedeau, S. Arva
Rok vydání: 2016
Předmět:
Zdroj: International Symposium for Testing and Failure Analysis.
ISSN: 0890-1740
DOI: 10.31399/asm.cp.istfa2016p0249
Popis: Conductive thin film residues often referred to as puddles could be challenging fails to detect. A large extant film with no distinct boundaries would make the task more challenging for a comparison between good and bad region. Advanced node 20nm and 14nm technologies mandate use of several conductive thin films in the front end of line processes, and hence a potential for high defects during initial product development stage. Use of other electrical characterization techniques in combination with scanning electron microscopy inspection will be a very powerful tool to detect the root cause affirmatively. Cross-sectional images are necessary to understand the root cause of the fails for corrective actions. This work uses three cases of power supply shorts as a platform to demonstrate the idea, demonstrating a few situations where traditional techniques might reach its limits while the authors depend on additional characterization tools to confidently detect and confirm fails.
Databáze: OpenAIRE