Patent ID: 8666140

Claim:
A defect inspection method for a wafer, the wafer including a first component pattern formed thereon, the method comprising the following steps: providing a defect inspection apparatus for inspecting the defects on the wafer and obtaining a defect map; providing a first photo mask, wherein the first photo mask comprises a first exposure pattern corresponding to the first component pattern; and comparing the defect map with the first exposure pattern and dividing the defects in the defect map into a first killer defect group and a first non-killer defect group, wherein the first killer defect group comprises more than one defect, and the first killer defect group is divided according to the defects' corresponding locations in the first exposure pattern, the first non-killer defect group comprises more than one defect, and the first non-killer defect group is divided according to the defects' corresponding locations in the first exposure pattern.