Patent ID: 7739631
Filing Date: 2010-06-15
Classification: G01R

Abstract:
1. A testing method comprising: storing QC data for each process of electronic device manufacturing processes in a storage unit; providing a distribution map for the QC data for each of the processes; finding a singularity in the distribution map and making a singularity map; comparing the singularity map to a failure generation map for a completed electronic device; determining by a computer a causal process for a failure and a defect through the comparison; modeling a cross-section of an electronic device produced by the causal process for the failure, which is found through determining the causal process for the failure; simulating, based on the modeled cross-section, a cross-section to be expected after the causal process for the failure is completed; and verifying whether the causal process for the failure and the defect are found correctly.