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:
Jul. 22, 2014
Filed:
Nov. 30, 2012
Applicant:
Ati Technologies Ulc, Markham, CA;
Inventors:
Neil Mclellan, Toronto, CA;
Adam Zbrzezny, Scarborough, CA;
Assignee:
ATI Technologies ULC, Markham, Ontario, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 21/44 (2006.01); H01L 23/00 (2006.01);
U.S. Cl.
CPC ...
H01L 24/11 (2013.01); H01L 2924/01029 (2013.01); H01L 2224/13099 (2013.01); H01L 2924/01079 (2013.01); H01L 2924/14 (2013.01);
Abstract
A method of manufacturing semiconductor packages at the wafer level is disclosed. A wafer has multiple integrated circuits (ICs) formed on its active surface, with each IC in communication with a plurality under-bump metallization (UBM) pads formed on one surface the package. The UBM pads include a larger pads near the center of package and smaller UBM pads near the periphery. The method includes attaching a stiffener to an inactive surface of the wafer; forming under bump metallization pads; and forming solder bumps extending from the UBM pads.