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. 24, 1988
Filed:
Mar. 20, 1985
Applicant:
Inventors:
Laurence L Allred, Jr, Chandler, AZ (US);
Bradley N Lange, Chandler, AZ (US);
Assignee:
Advanced Semiconductor Materials America, Inc., Tempe, AZ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R / ; G01R / ;
U.S. Cl.
CPC ...
3241 / ; 324 / ;
Abstract
A semiconductor die is positioned and examined by means of scanning certain strategic regions which border or overlap said die. The video which results from the scanning is digitized. For example, black is represented by an '0' and white is represented by a '1'. The results may be compared with an acceptable pattern to determine a good die and statistically analyzed to see if the data represents the die or surrounding street.