Patent ID: 7020536
Filing Date: 2006-03-28
Classification: G01N,Y10S

Abstract:
1. A method of building a wafer defect database, the wafer defect database comprising a defect classification recipe which is used for a defect classification machine to perform an automatic defect classification, the method of building the defect database comprising following steps: (a) providing a first wafer with a plurality of defects thereon that were generated during a first semiconductor process; (b) performing a defect inspection to the first wafer to detect the defects; (c) providing a predetermined defect database which comprises a defect classification recipe corresponding to a second semiconductor process; (d) utilizing the defect classification machine to perform an automatic defect classification according to the predetermined defect database to separate the defects into a plurality of defect types; (e) performing a manual defect classification to verify the accuracy of the automatic defect classification to each defect type; (f) assigning the predetermined defect database as the wafer defect database when the accuracy of the automatic defect classification is qualified and setting up the predetermined database for online usage; (g) performing an updating step to correct the predetermined defect database when the accuracy of a specific defect type of the automatic defect classification is not qualified, wherein the updating step comprises: (h) repeating steps (d), (e), (f), and (g) to complete the wafer defect database.