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:
Nov. 10, 1987
Filed:
Jan. 31, 1986
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A ball-type bonding wire for use in connecting electrodes of semiconductor devices with external connector terminals and a method for producing such a wire in which the material of the wire can be a material such as aluminum, copper, palladium, alloys thereof, and combinations thereof. In forming the wire, the tip of the wire is disposed opposite a consumable electrode in an inert atmosphere, and a voltage is applied between the wire and the electrodes so as to cause a discharge between the tip of the wire and the consumable electrode. The polarity of this voltage is such that the majority of the energy contained in the discharge and supplied to the wire is produced when the wire is positive with respect to the consumable electrode.