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. 11, 2011
Filed:
Jul. 02, 2009
Applicant:
Seiji Hirabayashi, Kawasaki, JP;
Inventor:
Seiji Hirabayashi, Kawasaki, JP;
Assignee:
Renesas Electronics Corporation, Kanagawa, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 23/52 (2006.01);
U.S. Cl.
CPC ...
Abstract
To facilitate counting of memory cells in failure analysis, without limiting the arrangement of memory cells or increasing the number of processes. A memory cell array regionin which memory cellsare formed in a repetitive pattern is formed on a semiconductor substrate. Power supply wiringsand ground wiringsin a predetermined layer formed on the memory cell array regionare vertically and horizontally arranged in the form of a gird to correspond to the arrangement of the memory cellsat least in the memory cell array region