What is DPW (Die Per Wafer)?
DPW (Die Per Wafer) refers to the number of complete dies that can be obtained from a single wafer. This value depends on factors such as wafer size, die size, scribe width, and edge exclusion zone. Accurate DPW calculation is crucial for cost estimation and capacity planning in semiconductor manufacturing.
Murphy Model
The Murphy model is a classic mathematical model used to estimate wafer yield. This model takes into account the impact of defect density on yield, with the formula: Y = ((1 - e^(-AD)) / AD)², where A is the die area and D is the defect density. This calculator uses the Murphy model to estimate the number of good dies.
DPW Calculation Logic
This calculator uses a grid traversal algorithm to calculate DPW: