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:
Dec. 13, 2005
Filed:
Oct. 28, 2003
Applicants:
Joseph P. Dower, Fogelsville, PA (US);
Kultaransingh N. Hooghan, Allentown, PA (US);
Inventors:
Joseph P. Dower, Fogelsville, PA (US);
Kultaransingh N. Hooghan, Allentown, PA (US);
Assignee:
Agere Systems Inc, Allentown, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L023/544 ; H01L021/70 ;
U.S. Cl.
CPC ...
Abstract
A semiconductor chip and method of fabrication which permits precise location of hidden areas of the chip. At least two alignment marks are formed in or on the top passivation layer to provide topological features for location of the hidden areas. The hidden areas can then be selectively etched and/or added to, for example, by a focused ion beam for repair or other functions.