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:
Apr. 01, 2008
Filed:
Jan. 18, 2006
Uday Nayak, San Jose, CA (US);
Richard James Casler, Jr., Cupertino, CA (US);
Max Jedda, Sunnyvale, CA (US);
Uday Nayak, San Jose, CA (US);
Richard James Casler, Jr., Cupertino, CA (US);
Max Jedda, Sunnyvale, CA (US);
Electroglas, Inc., San Jose, CA (US);
Abstract
Improved methods and apparatuses for automatically and accurately maintaining the alignment of a wafer prober to the bonding pads of a semiconductor device in the presence of motion disturbances are provided. In one embodiment of one aspect of the invention, a feedback control system incorporating information from a number of acceleration and/or velocity sensors is used to maintain the desired contact position in the presence of motion disturbances. Other aspects and other embodiments are also described.