virtual fab

**Virtual Fab** is a **comprehensive simulation environment that models the entire semiconductor manufacturing flow** — from wafer start to finished product, including process steps, equipment behavior, lot scheduling, and yield, enabling factory-level optimization without physical experiments. **Virtual Fab Capabilities** - **Process Simulation**: Model each unit process (lithography, etch, deposition) with physical or empirical models. - **Factory Simulation**: Discrete-event simulation of lot flow, queuing, tool utilization, and cycle time. - **Yield Modeling**: Statistical yield models based on defect density, parametric distributions, and process windows. - **Cost Modeling**: Calculate cost-per-wafer incorporating tools, materials, labor, and overhead. **Why It Matters** - **New Process Introduction**: Simulate a new process flow before committing silicon. - **Bottleneck Analysis**: Identify capacity bottlenecks and optimize tool investment. - **Training**: Train new engineers on virtual fab operations without production risk. **Virtual Fab** is **the semiconductor flight simulator** — modeling the entire factory for optimization, training, and planning without risking real production.