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:
Feb. 06, 2018
Filed:
Nov. 08, 2016
Applicant:
Panasonic Intellectual Property Management Co., Ltd., Osaka, JP;
Inventors:
Junichi Katou, Kyoto, JP;
Hiroyasu Nagai, Hyogo, JP;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C 11/00 (2006.01); G11C 13/00 (2006.01); H01L 23/528 (2006.01); H01L 27/02 (2006.01); H01L 27/24 (2006.01); H01L 45/00 (2006.01);
U.S. Cl.
CPC ...
G11C 13/004 (2013.01); G11C 13/003 (2013.01); G11C 13/0069 (2013.01); H01L 23/528 (2013.01); H01L 27/0207 (2013.01); H01L 27/2436 (2013.01); H01L 27/2463 (2013.01); H01L 27/2481 (2013.01); H01L 45/04 (2013.01); G11C 2213/79 (2013.01);
Abstract
A semiconductor memory solves performance degradation of a memory device caused by performance of memory functions different depending on a position of a memory cell array. In the memory cell array including memory cells in each of which a memory element is electrically connected to one of a source and a drain of a cell transistor, the cell transistor includes at least two types with different current driving capability according to a position in the memory cell array.