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Foundry integration and manufacturing challenges for 2.5D TSV technology are discussed, with focus on in-line defectivity and warpage control. The major defect types and yield correlation are scrutinized. The results show that Cu out-diffusion from TSV due to oxide liner isolation defects has a bigger impact on yield compared to open TSV. The model suggests that one redundant TSV is enough to mitigate...
This paper presents challenges in the advanced process technologies, and the need to adopt a new collaboration model between the designer and the foundry.
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