Patent ID: 6512842
Filing Date: 2003-01-28
Classification: G06K,G06T

Abstract:
A method of analyzing defect images in a semiconductor manufacturing process, the method comprising:sending a production lot of wafers through a manufacturing process; scanning a selected wafer from the production lot of wafers for defects; sending location information for defects caught during the step of scanning to a defect management system; analyzing images of defects in an analysis tool wherein the analysis tool assigns descriptors, that measure the component parts that make the cohesive whole of an image, to each image and sends each image and the assigned descriptors to the defect management system; storing each image and assigned descriptors with linkage data linking the assigned descriptors to each image in a database; reviewing a selected image at a review station wherein the review station assigns descriptors to the selected image that describe a desired feature of the selected image that is to be analyzed; and searching the database for images having the same descriptors as the descriptors assigned to the selected image.