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:
Oct. 02, 2001
Filed:
Jun. 07, 2000
Applicant:
Inventor:
E. C. Ong, Sunnyvale, CA (US);
Assignee:
Advanced Interconnect Solutions, Sunnyvale, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B23K 1/20 ;
U.S. Cl.
CPC ...
B23K 1/20 ;
Abstract
A flux-application fixture for applying flux to die pads in a ball-grid-array assembly process is provided. The fixture comprises a solid plate having a lower surface and an upper surface and a plurality of flux pins formed in the upper surface of the solid plate. The flux pins are contiguous with the solid plate and are formed by removing material from the upper surface of the plate such that the remaining material not removed forms the plurality of flux pins. In a preferred application the material is removed by grinding and the flux plate is ground flat to tight tolerance before removing the material to form the flux pins.