Asymmetric variability

Asymmetric variability issues could impact 7nm processes

By Luke Collins, Tech Design Forum

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New variability issues highlighted by a massive process simulation exercise could make it more difficult than expected to achieve the performance advantages of emerging 7nm and 5nm processes.

Nano-electronics research centre imec has worked with Coventor to simulate the process variability of its 7nm BEOL fabrication processes using Coventor’s SEMulator3D virtual fabrication platform. The simulation of a full process window, looking at how multiple parameters of multiple processes interact, would have taken one million wafers to complete using conventional methods.

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