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:
Oct. 08, 2002
Filed:
Dec. 29, 2000
Stephen N. Keeney, San Jose, CA (US);
Intel Corporation, Santa Clara, CA (US);
Abstract
A technique of performing post erase repair on a flash memory by identifying a leaky column after the flash memory is erased. The leaky column is repaired first by programming memory cells of the column to increase the threshold voltage Vt of the memory cells to remove the leaky column condition prior to performing post erase repair on the memory cells. Then, each memory cell is verified and repaired to ensure that each memory cell has a Vt above an acceptable post erase repair value. By performing the column leakage repair first, over erased leakage from deselected cells are not present to give false indications when each cell is verified for the post erase repair Vt.