multi-objective process development

**Multi-Objective Process Development** is a **systematic approach to developing semiconductor processes that simultaneously satisfies multiple quality requirements** — balancing competing objectives (CD, uniformity, defects, throughput) using structured DOE, multi-response models, and Pareto optimization. **Development Workflow** - **Define Objectives**: Identify all critical quality attributes and their specifications. - **DOE**: Design experiments that allow estimation of multi-response models. - **Model**: Fit response surface models for each quality metric. - **Optimize**: Use desirability functions or Pareto optimization to find the best compromise. **Why It Matters** - **Holistic Development**: Avoids optimizing one response at the expense of others. - **Trade-Off Visibility**: Makes trade-offs between objectives explicit and quantifiable. - **Faster Development**: Systematic approach reaches acceptable solutions faster than trial-and-error. **Multi-Objective Process Development** is **optimizing everything at once** — developing processes that meet all quality targets simultaneously through structured experimentation and trade-off analysis.