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:
Sep. 17, 2002
Filed:
Oct. 21, 2000
Applicant:
Inventors:
Ravi S. Sunkavalli, Milpitas, CA (US);
Lee Cleveland, Santa Clara, CA (US);
Sameer S. Haddad, San Jose, CA (US);
Richard Fastow, Cupertino, CA (US);
Tim Thurgate, Sunnyvale, CA (US);
Assignee:
Advanced Micro Devices, Inc., Sunnyvale, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11C 1/604 ;
U.S. Cl.
CPC ...
G11C 1/604 ;
Abstract
A method of erasing a flash memory device that improves reliability and reduces the decrease in erase speed. The state of erasure is determined either during an erase phase or a verify phase and the information is fedback to a controller that adjusts the erase vertical electrical field that is to be applied to the array. The vertical electrical field is adjusted by changing the gate voltage, the well voltage or changing both simultaneously.