Flash memory device and method for fabricating the same, and...

Static information storage and retrieval – Floating gate – Particular biasing

Reexamination Certificate

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Details

C257S314000, C257S315000, C257SE21182, C257SE21267, C365S185180, C365S185240, C438S157000, C438S176000

Reexamination Certificate

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07366026

ABSTRACT:
A flash memory device of SONOS structure and a method for fabricating the same, and programming and erasing operation methods, to improve reliability such as endurance and retention, are disclosed, which includes a first conductive type semiconductor substrate; an ONO layer on the semiconductor substrate; a first control gate on the ONO layer; second and third control gates on the ONO layer at both sides of the first control gate; and source and drain regions in the surface of the semiconductor substrate at both sides of the second and third control gates.

REFERENCES:
patent: 6259142 (2001-07-01), Dawson et al.
patent: 6531350 (2003-03-01), Satoh et al.
patent: 6586296 (2003-07-01), Watt
patent: 6822926 (2004-11-01), Kanai et al.
patent: 6939767 (2005-09-01), Hoefler et al.
patent: 6949788 (2005-09-01), Fujiwara et al.
patent: 2001/0002712 (2001-06-01), Horiguchi et al.

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