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Multi silicon dies stack using through silicon via (TSV) is required for higher performance, greater package miniaturization and more functionality electronic device. A through silicon interposer (TSI) enables interconnect pitch matching between a high I/Os top chip and a low cost organic substrate. TSI also mitigates the risk of extreme low-K (ELK) layers delamiantion. This paper demonstrates the...
In this paper, a heat spreader attachment with indium solder for high-power flip chip-in-package application was investigated. The Cu heat spreader was metallized with Ni/Au and the flip chip die backside metallization was Ti/Au. A low voiding attachment process was achieved with vacuum soldering. The Au thin film was converted into AuIn2 completely after initial soldering, but no intermetallic compund...
One promising application of CNTs in microelectronics is to use vertically aligned CNT (VACNT) arrays as novel thermal interface materials (TIMs). No doubt that the vertical alignment makes the best of the extremely high longitudinal thermal conductivity of individual CNTs; however, it is the CNT/substrate interface that exerts the main restriction on phonon transport through a TIM layer. There are...
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