Inventors:
Lex Kosowsky - San Jose CA, US
Assignee:
Shocking Technologies, Inc. - San Jose CA
International Classification:
H01L 23/28
US Classification:
257777, 257778, 257787, 257686, 257E23117
Abstract:
Semiconductor devices are provided that employ voltage switchable materials for over-voltage protection. In various implementations, the voltage switchable materials are substituted for conventional die attach adhesives, underfill layers, and encapsulants. While the voltage switchable material normally functions as a dielectric cmaterial, during an over-voltage event the voltage switchable material becomes electrically conductive and can conduct electricity to ground. Accordingly, the voltage switchable material is in contact with a path to ground such as a grounded trace on a substrate, or a grounded solder ball in a flip-chip package.