Goes straight to 20nm half node
TSMC has announced that it will skip the 22nm full node process and jump directly to the 20nm half node process.
The company will also have a 20nm CMOS process, but it will not offer
an 18nm process. The 20nm process will feature high-k/metal gate and
new low resistance ultra-low-k interconnects.
TSMC's rivals have not made much noise about their post-28nm processes
and it appears that TSMC will try to outpace its competition by
skipping the 22nm full node. Globalfoundries is working on a 22nm CMOS
process and it claims it will be ready for production in 2H 2012.
Intel is expected to go 22nm in Q4 2011.
TSMC claims the 20nm process is a much better choice than 22nm, as it offers better gate density and performance to cost ratio.