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:
Jun. 10, 2003
Filed:
Dec. 11, 2001
Applicant:
Inventors:
Robert M Hilton, Burpengary, AU;
Sabran Bin Samsuri, Penang, MY;
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B32B 3/100 ;
U.S. Cl.
CPC ...
B32B 3/100 ;
Abstract
A process for fabricating a BGA flip chip package containing a stiffener or heat spreader monitors edges of the adhesive that attaches the stiffener or heat spreader. The monitoring ensures that the adhesive extends beyond the centers of the outermost solder balls in the BGA. Stress at the edge of the adhesive thus does not cause warping or variations within the BGA.