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:
Jul. 01, 2003
Filed:
Apr. 23, 2002
Applicant:
Inventors:
Ryuji Ohmura, Hyogo, JP;
Kazushi Sugiura, Hyogo, JP;
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L 2/302 ; G11C 2/900 ;
U.S. Cl.
CPC ...
H01L 2/302 ; G11C 2/900 ;
Abstract
A replacement information storage unit stores additional replacement information determined according to testing carried out during or after assembly. A replacement information addition load unit receives additional replacement information from outside a plurality of memory chips. A replacement data retain unit stores address information corresponding to a defective memory cell found during a fabrication process of a memory chip, and can alter the output address signal according to externally applied additional replacement information.