Predictive modeling of pattern-dependent etch effects in large-area fully-integrated 3D virtual fabrication

We present a predictive modeling approach for pattern-dependent etch processes implemented in a 3D virtual fabrication software platform. This technique combines long-range effects using design data and short-range effects using predictive 3D models of the design-technology interaction. For the first time, this type of pattern-dependent predictive capability is integrated into a full 3D virtual fabrication environment to enable fast accurate structural modeling of complex advanced technologies such as FinFETs, 3D memory and BEOL interconnect.