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:
Aug. 30, 2005
Filed:
Jan. 21, 2004
Kai-chiang Wu, Hsin Chu, TW;
Kai-Chiang Wu, Hsin Chu, TW;
Global Advanced Packaging Technology H.K. Limited, Kowloon, HK;
Abstract
The present invention provides an improved structure of gold fingers, which is to redesign a conventional gold finger on a packaging substrate into a gold finger set that contains a plurality of gold finger units. Between each single gold finger unit, there exists an electrical connection. Therefore, in the structure of stacked-chip packaging, each wire that is connected through wire bonding on the same gold finger of each layer chip can separately perform wire bonding on different gold finger units of the same gold finger set. Due to the improvement on the gold finger structure, the present invention can prevent the adhesive on a chip from flowing along the wire bonding path of a layer chip and smearing the whole gold finger. Thus, other layer chips can be prevented from being unable to perform wire bonding.