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2013
Conference Paper
Titel
Investigations on partially filled HAR TSVs for MEMS applications
Abstract
For considerations of stress reduction HAR-TSVs were only partially filled with copper. A comparison was made to ring shaped TSVs (i.e. copper ring with silicon core). Two approaches regarding the way of TSV implementation (before and after wafer bonding/ thinning, resp.) are discussed, concerning process ability and yield aspects. Electrical measurement yield 11 MO for a single TSV and 76 MO for a 4-point TSV-chain (incl. RDL).