The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 16, 2024
Filed:
Aug. 23, 2019
Hitachi High-tech Corporation, Tokyo, JP;
Hitachi High-Tech Corporation, Tokyo, JP;
Abstract
The purpose of the present invention is to provide a defect inspection device with which it is possible to determine a defect candidate position more accurately than before, even when design data cannot be obtained or are difficult to be utilized sufficiently. The present invention solves the problem by: setting an appropriate reference die or reference chip over a wafer to be inspected; setting, with respect to each of swath channel die images obtained by dividing a reference die swath image into a plurality of portions and detecting the portions, one or more reference patterns; correcting a position error of a swath image obtained from another die to be inspected, using the reference pattern for each swath channel image; and performing defect detection using the corrected swath channel image.