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:
Sep. 30, 2003
Filed:
Feb. 19, 2002
Applicant:
Inventor:
Hiroshi Tomotani, Osaka, JP;
Assignee:
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C 5/02 ;
U.S. Cl.
CPC ...
G11C 5/02 ;
Abstract
A semiconductor memory device with a high-capacity memory cell array includes a plurality of global word lines per memory cell row of the memory cell array. The global word lines are formed in two wiring layers (upper and lower layers). This substantially reduces the number of memory cells connected per global word line without increasing the memory cell size, allowing for an improved operation speed of the memory cells and reduced power consumption.