Deep Trench Isolation and through Silicon via Wetting Characterization by High-Frequency Acoustic Reflectometry
2016 ◽
Vol 255
◽
pp. 129-135
◽
Keyword(s):
Wetting efficiency of microstructures or nanostructures patterned on Si wafers is a real concern in integrated circuits manufacturing. We present here a high-frequency acoustic method which enables the local determination of the wetting state of a liquid on real DTI and TSV structures. Partial wetting states for non-hydrophobic surfaces or low surface tension liquids are detectable with this method. Filling time of TSV structures has also been measured.
1992 ◽
Vol 50
(2)
◽
pp. 1406-1407
Keyword(s):