triple patterning

The 10nm process will see changes to multiple patterning that demands changes in the implementation flow, along with an increased focus on the effects of variability.

Sign-off lithography verification is vital as we move beyond double to multi-patterning but changing responsibilities in the flow must be handed with care.

In the absence of EUV lithography, the primary option for manufacturing on a 10nm process is to extend double patterning. But the options each have issues.