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:
May. 25, 1999
Filed:
Aug. 21, 1997
Applicant:
Inventors:
Nobuto Yamazaki, Kunitachi, JP;
Minoru Torihata, Musashimurayama, JP;
Tatsunari Mii, Musashimurayama, JP;
Assignee:
Kabushiki Kaisha Shinkawa, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L / ; H01L / ;
U.S. Cl.
CPC ...
228-45 ; 228 55 ;
Abstract
A capillary for a wire bonding apparatus having a wire threading hole and a chamfer, in which the wire threading hole is formed in two stages as first and second wire threading holes, the diameter of the first wire threading hole which is located above the second wire threading hole exceeds the diameter of a bonding wire by no more than 3 to 8 microns, the diameter of the second wire threading hole is 5 to 10 microns greater than the first hole diameter, and the depth of the second wire threading hole is 10 to 50 microns.