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:
Dec. 12, 1989
Filed:
Aug. 10, 1988
Applicant:
Inventor:
Kiyoaki Tsumura, Itami City, JP;
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B23K / ;
U.S. Cl.
CPC ...
228-11 ; 228110 ; 228-45 ;
Abstract
A wire bonding capillary tip is disclosed. A metal ball at the end of a bonding wire is positioned adjacent a material to be bonded, and pressed against the material to plastically deform the ball. The orientation of the load applied to the ball changes continuously and smoothly. Ultrasonic vibrations are applied to the metal ball to diffuse elements of the metal ball and the material mutually. The capillary tip includes a flat loading surface to press the metal ball, a through-hole opened to the loading surface for passing the wire therethrough, and a convex surface around the opening of the through-hole which connects the through-hole to the flat loading surface continuously and smoothly.