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:
Oct. 12, 2010
Filed:
Nov. 20, 2008
Kwok Kee Chung, Kwai Chung, HK;
Wing Hong Leung, Kwai Chung, HK;
Ka Fai Fung, Kwai Chung, HK;
Chi Leung Vincent Mok, Kwai Chung, HK;
Shun Ming Kenneth Fung, Kwai Chung, HK;
Kwok Kee Chung, Kwai Chung, HK;
Wing Hong Leung, Kwai Chung, HK;
Ka Fai Fung, Kwai Chung, HK;
Chi Leung Vincent Mok, Kwai Chung, HK;
Shun Ming Kenneth Fung, Kwai Chung, HK;
ASM Assembly Automation Ltd., , HK;
Abstract
An apparatus for correcting a positional offset of a bonding tool during bonding operations comprises a first fiducial mark and a second fiducial mark spaced from the first fiducial mark located on the bonding tool. A first imaging path emanates from the first fiducial mark and a second imaging path emanates from the second fiducial mark when the first and second fiducial marks are illuminated at a reference position. An optical system is positioned along the first and second imaging paths to view images of the first and second fiducial marks. A processor is operative to calculate a current position of the bonding tool and to compare it to a desired position so that the bonding tool's positional offset may be corrected by moving it to the desired position.