Patent ID: 6202037
Filing Date: 2001-03-13
Classification: H01L

Abstract:
A quality management system for managing quality variance of a semiconductor device in a process of manufacturing said semiconductor device based on a design, by investigating defects of a semiconductor device under manufacture out of conformance with a design, comprising:first data processing means receiving first measured data on said defects outputted from a defect inspection device, for processing said first measured data to calculate first processed data including index values on the number and distribution of said defects;first processed-data judgment means receiving said first processed data, for making a judgment, based on a predetermined judgment condition, on whether a further investigation on said defects should be made or not;sampling means for sampling an object defect to be probed among said defects based on a predetermined sampling condition when it is judged that said further investigation should be made and outputting data on positional coordinates of said object defect to a defect analysis device;second data processing means receiving second measured data outputted from said defect analysis device as a result of analyzing said object defect based on said data on said positional coordinates, for processing said second measured data to calculate second processed data including index values at least on a shape of said object defect; andsecond processed-data judgment means receiving said second processed data, for automatically making an estimation, based on said second processed data, on what apparatus and process for manufacturing said semiconductor device may be a defect source.