Abstract
AbstractThrough-silicon via (TSV) structures with various material and geometry configurations are assessed to study their impact on reliability, isolation and performance. Oxide liner insulators show a larger performance impact as compared to low-k liners and the effect decreases with increasing liner insulator thickness. Higher density of the TSV array causes greater stress impact on carrier mobility and increases the parasitic capacitance. Additionally, low-k liner reduces the parasitic capacitance, but exhibits lower strength and adhesion, therefore degraded reliability. These results provide an important perspective of performance and reliability trade-offs necessary for a robust TSV design.
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