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:
Nov. 01, 1994
Filed:
Nov. 26, 1993
Applicant:
Inventor:
Kiminori Hayano, Kanagawa, JP;
Assignee:
NEC Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C / ; G11C / ;
U.S. Cl.
CPC ...
365200 ; 36523006 ; 371 101 ;
Abstract
A dynamic random access memory device has a plurality of sense amplifier circuits shared between two regular memory cell arrays respectively associated with redundant memory cell arrays, and two transfer gate arrays are coupled between one of the regular memory cell arrays and one of the redundant memory cell arrays as well as between the other regular memory cell array and the other redundant memory cell array so that a large number of defective memory cells are replaceable with both of the redundant memory cell arrays, thereby improving production yield.