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. 09, 2012
Filed:
Feb. 27, 2010
Applicant:
Rodney L. Hill, Buxton, ME (US);
Inventor:
Rodney L. Hill, Buxton, ME (US);
Assignee:
National Semiconductor Corporation, Santa Clara, CA (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C23F 1/00 (2006.01); B44C 1/22 (2006.01); H01B 13/00 (2006.01); H01B 5/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A metal interconnect structure, which includes a bond pad, an overlying anti-reflective coating layer, an overlying passivation layer, and an opening that exposes a top surface of the bond pad, eliminates corrosion resulting from the anti-reflective layer being exposed to moisture during reliability testing by utilizing a side wall spacer in the opening that touches the side wall of the passivation layer, the side wall of the anti-reflective coating layer, and the top surface of the bond pad.