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:
Mar. 08, 1994
Filed:
Dec. 03, 1992
Tetsuya Nagaoka, Yokohama, JP;
Kazuhiro Yamamori, Yokohama, JP;
Kabushuki Kaisha Toshiba, Kawasaki, JP;
Abstract
A wire bonder comprises a pattern recognition mechanism. The pattern recognition mechanism includes a TV camera head, a camera control unit, a program research unit, and a bonder controller. The bonder controller includes a microcomputer, a control circuit, and a servo drive unit. The TV camera head and camera control unit detect locations of a first bonding pad formed on a first semiconductor chip and a second bonding pad formed on a second semiconductor chip. The program research unit calculates amounts of shift of the detected locations of the first and second bonding pads from reference locations thereof. The microcomputer corrects locations of first and second bonding points and those of first and second cutting points in accordance with the calculated amounts of shift. The control circuit and servo drive unit control the first and second bonding points and the first and second cutting points based on the corrected locations.