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:
Aug. 15, 2000
Filed:
Aug. 25, 1998
Applicant:
Inventor:
Ryo Haga, Yokohama, JP;
Assignee:
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11C / ;
U.S. Cl.
CPC ...
365200 ; 36518907 ; 365 51 ;
Abstract
There is disclosed a memory cell array including regular and redundant memory cells, a plurality of bit lines connected to the regular memory cells, a plurality of redundant bit lines connected to the redundant memory cells, a regular data line commonly coupled to the plurality of regular bit lines, and a redundant data line commonly coupled to the plurality of redundant bit lines. Column selection lines include regular column selection lines for selecting regular bit lines, and redundant column selection lines for selecting redundant bit lines. Furthermore, the number of redundant column selection lines is smaller than that of the regular column selection lines.