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. 13, 1999
Filed:
Apr. 17, 1997
Laurent Pasquier, Zurich, CH;
ESEC SA, Cham, CH;
Abstract
In an apparatus known as a wire bonder, a new type of one-piece joint element (20) is used as the articulated link (G) between a support unit (pivoting rocker 30) and a bonding unit (10) that carries a capillary (12). One or more such joint elements (20) define a virtual pivot axis (A2) for the unit (10), which lies outside the unit and thus provides a passage in the apparatus wide enough for relatively wide workpieces (chips 1 on substrate 2). A joint element (20a) is made in one piece and has at least two elastically flexible blades (22a) converging toward each other relative to a symmetry plane (S), and the blades are connected to each other by two rigid sections (23a, 24a). One of the rigid sections (23a) is attached to (and removable from) the support unit (30), the other (24a) is attached to (and removable from) the bonding unit (10), so that the joint element (20) is easy to fit or exchange.