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:
May. 15, 2018
Filed:
Apr. 28, 2014
Hitachi High-technologies Corporation, Minato-ku, Tokyo, JP;
Mitsuhiro Yoshida, Tokyo, JP;
Hitachi High-Technologies Corporation, Tokyo, JP;
Abstract
Provided is a wafer appearance inspection apparatus that can segmentize an inspection target region, enable expedited execution of an operation to set a sensitivity threshold to each region, and enhance the inspection efficiency. Pattern matching between the image region of a part of a standard wafer, which is defined as a template region, and the entire image region of the standard wafer is performed to compute an image editing value. The computed image editing value is used to edit an inspection target image. A region for which a threshold is to be set can be automatically confirmed by roughly specifying the region from among edited image regions displayed on the display. The confirmed region and a similar pattern region are searched and displayed. When the similar region is selected, the initial sensitivity threshold is displayed, and a change is made on an as-needed basis. The region of the set sensitivity threshold is displayed by the display color corresponding to the determined threshold. Inspection is executed according to the set threshold.