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In this paper, the pumping behaviors of copper filler from TSV were systematically investigated. First, in-situ observation of copper pumping from TSV was conducted in scanning electronic microscope (SEM), the pumping height of copper filler and its evolution with time and temperature was recorded, it is found that the pumping rate increase with temperature and the maximum pumping height reached 12...
The influence of copper pumping on through-silicon vias (TSVs) under thermal loading was investigated using an in situ experimental technique. The morphology of the TSV and its evolution with temperature were observed by scanning electric microscopy, and the process of copper pumping and its damage to the integrity of the TSV were recorded. Some new failure modes were found. The maximum height of...
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