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. 08, 2005
Filed:
Sep. 10, 2003
Andy Cheung, Kawasaki, JP;
Andy Cheung, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
A semiconductor memory includes a core array including a plurality of memory cells, and a redundant array to be substituted for a substitution object area having a defective cell in the core array. In this semiconductor memory, there are provided a substitution address memory which stores an address of a first substitution object area including both sides of the defective cell as a substitution object address, and a redundancy controller which controls to substitute the redundant array for the substitution object area of the core array. When a portion of the first substitution object area is located on the outside of the core array, the redundancy controller controls to substitute the redundant array for a second substitution object area which has the defective cell and is located on the inside of the core array.