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. 09, 1996
Filed:
Nov. 29, 1994
Yasushi Yamagata, Tokyo, JP;
NEC Corporation, , JP;
Abstract
A non-volatile memory cell disclosed herein includes a pair of regions are provided in a channel region in contact respectively with source and drain to provide a symmetrical structure. A data erase is done by applying a high voltage to the source to produce avalanche breakdown between the source and the region to inject induced hot carriers into the floating gate and wherein the memory cell threshold voltage after erasure is converged to a constant value irrespective of the initial states, while the converged value may be controlled to a desired voltage by applying a suitable voltage to the control gate. Erasure sequence consisting in all bit erase and one verification is sufficient such that the erase sequence is simplified and erase time shortened.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile