Nonvolatile semiconductor memory device including an...

Details Nonvolatile semiconductor memory device including an... Nonvolatile semiconductor memory device including an...

2007-07-31

2007-07-31

Soward, Ida M. (Department: 2822)

Active solid-state devices (e.g., transistors, solid-state diode

Field effect device

Having insulated electrode

C257S317000, C257S318000, C257S319000, C257S320000, C257S321000, C257S322000, C257S328000, C257S329000, C257S330000, C257S331000, C257S332000, C257S333000, C257S334000

Reexamination Certificate

active

11154517

ABSTRACT:
A nonvolatile semiconductor memory device includes a substrate, a central structure, a second gate insulating film, a floating gate, and a control gate. The substrate has a trench. The central structure is formed so as to be embedded in the trench and protruded from the substrate. The second gate insulating film is formed on the substrate so as to be contact with the central structure. The floating gate is formed on the second gate insulating film. The control gate is formed so as to cover the floating gate through a insulating film;. The central structure includes an assistant gate and a first gate insulating film which is formed such that the assistance gate is surrounded with the first gate insulating film. The floating gate is formed in a side wall shape on the side surface of the central structure.

REFERENCES:
patent: 5468663 (1995-11-01), Bertin et al.
patent: 6587396 (2003-07-01), Jang
patent: 6734066 (2004-05-01), Lin et al.
patent: 6913974 (2005-07-01), Hung et al.
patent: 7001809 (2006-02-01), Hsieh et al.
patent: 2003/0186506 (2003-10-01), Huang
patent: 2004/0075134 (2004-04-01), Lin et al.
patent: 2004/0229422 (2004-11-01), Mori et al.
patent: 2004/0238852 (2004-12-01), Lee et al.
patent: 2005/0127428 (2005-06-01), Mokhlesi et al.
patent: 2007/0023819 (2007-02-01), Sumino et al.
patent: 2002-373948 (2002-12-01), None
patent: 2004-23093 (2004-01-01), None

Affiliated with

Also associated with

Rating

Nonvolatile semiconductor memory device including an... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Nonvolatile semiconductor memory device including an..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Nonvolatile semiconductor memory device including an... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3761475