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:
Sep. 10, 2019
Filed:
Aug. 12, 2016
Shinkawa Ltd., Tokyo, JP;
SHINKAWA LTD., Tokyo, JP;
Abstract
A ball forming devicefor forming a ballat a tip of a wireby producing discharge between a torch electrodeand the tip of the wire, the device includes: a current supply unitconfigured to supply a ball-forming current between the torch electrodeand the tip of the wire; and a current control unitconfigured to control the current supply unit, so that a signal of the ball-forming current for a predetermined period includes a first period in which the signal takes a predetermined current value and a second period including a triangle wave. With this, it is possible to provide a ball forming device, a wire-bonding apparatus, and a ball formation method that are capable of suppressing formation of deformed balls.