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:
Dec. 14, 1999
Filed:
Jan. 09, 1998
Applicant:
Inventors:
Hieu Van Tran, San Jose, CA (US);
James Brennan, Jr, Saratoga, CA (US);
Assignee:
Information Storage Devices, Inc., San Jose, CA (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11C / ;
U.S. Cl.
CPC ...
365200 ; 3652257 ;
Abstract
This invention provides column redundancy circuits in a storage array, which circuits are used in a non-volatile memory chip to increase the production yield due to manufacturing defects. The invention includes a scheme to latch and transfer the redundancy information, a redundancy logic circuit, a redundancy column driver, an array architecture with column redundancy, a scheme to program and read the column redundancy memory cells, a scheme to multiplex the fuses, and circuits to use an out-of-bound address as a column redundancy enable/disable signal.