2011
DOI: 10.1149/1.3567673
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Glue Layer Study of Inter Via between Cu and Al Metal Lines

Abstract: A 0.13um Cu-Al hybrid backend between a dual damascene process with Cu line and a conventional process with Al line is introduced in this paper. First 3 metal layers (M1~M3) interconnects with Cu line for process capability and circuit speed concern. Whereas following metal layers (M4~M7) interconnects with Al line for cost concern. The interconnection via between Cu and Al interface is the key process for Cu-Al hybrid process. This paper mainly focused on via process study between Cu and Al interconnection.

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“…3. It was shown in [3] that, due to DIBL, an effective drive current, Ieff, needs to be used to calculate the actual delay of an inverter instead of Ion since the actual switching current could be significantly lower than the Ion. The value of Ieff is an averaged value of I high and I low .…”
Section: Device Characteristicsmentioning
confidence: 99%
“…3. It was shown in [3] that, due to DIBL, an effective drive current, Ieff, needs to be used to calculate the actual delay of an inverter instead of Ion since the actual switching current could be significantly lower than the Ion. The value of Ieff is an averaged value of I high and I low .…”
Section: Device Characteristicsmentioning
confidence: 99%