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. 18, 2004
Filed:
Jan. 23, 2002
Applicant:
Inventors:
Il Kwon Shim, Singapore, SG;
Hermes T. Apale, Singapore, SG;
Weddle Aquien, Singapore, SG;
Dario Filoteo, Singapore, SG;
Virgil Ararao, Singapore, SG;
Leo Merilo, Singapore, SG;
Assignee:
St Assembly Test Services Ltd, Singapore, SG;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L 2/144 ; H01L 2/148 ; H01L 2/150 ;
U.S. Cl.
CPC ...
H01L 2/144 ; H01L 2/148 ; H01L 2/150 ;
Abstract
A new method and assembly are provided for anchoring the heat spreader of a PBGA package to the substrate thereof. Anchor features are made part of the PBGA package. These anchor features are provided over the surface of the substrate of the PBGA package. The anchor features align with openings created in the heat spreader stand-off, thus allowing for quick and reliable positioning and anchoring of the heat spreader over the surface of the substrate of the package.