Abstract-We present a set of design tools for 3-D integration. Using these tools -a 3-D standard-cell placement tool, global routing tool, and layout editor -we have targeted existing standard-cell circuit netlists for fabrication using wafer bonding. We have analyzed the performance of several circuits using these tools and find that 3-D integration provides significant benefits. For example, relative to single-die placement, we observe on average 28% to 51% reduction in total wire length.
BACKGROUND Several tools are implemented in the past for different physical design stages, such as 3-D standard-cell placement tool, global routing tool and layout editor, in the tool chain of 3-D integration REF .
Design tools for 3-D integrated circuits
ASP-DAC '03
Computer Science