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Introducing a through-silicon-via (TSV) process into an existing technology node additional degradation mechanisms can be expected. The focus of the investigation was on mechanical stress from the TSV on near by MOS devices and plasma charging effects from the processing of the TSV connected to MOS devices. The significance of these additional effects on the MOS transistor reliability is assessed. It is shown that a TSV-process can introduce severe reliability degradation for MOS transistors.
Date of Conference: 17-21 Oct. 2010