Semiconductor memory having storage cells storing multiple...

Details Semiconductor memory having storage cells storing multiple... Semiconductor memory having storage cells storing multiple...

2006-05-02

2006-05-02

Vu, David (Department: 2818)

Semiconductor device manufacturing: process

Making field effect device having pair of active regions...

Having insulated gate

C257S314000

Reexamination Certificate

active

07037782

ABSTRACT:
A multiple-bit cell transistor includes a P type silicon substrate, a gate insulation layer, a pair of N type source/drain regions, a pair of tunnel insulation layers, and a pair of floating gates. The silicon substrate is formed with a projection while the floating gates each are positioned on one of opposite side walls of the projection. Inter-polycrystalline insulation layers each are formed on one of the floating gates. A control gate faces the top of the projection via the gate insulation layer. An N type region is formed on each side of the projection and contacts the source/drain region adjoining it. The cell transistor lowers a required write voltage, broadens a current window, and enhances resistance to inter-band tunneling.

REFERENCES:
patent: 5379255 (1995-01-01), Shah
patent: 5508544 (1996-04-01), Shah
patent: 6091101 (2000-07-01), Wang
patent: 6133098 (2000-10-01), Ogura et al.
patent: 6137134 (2000-10-01), Nakagawa
patent: 6157061 (2000-12-01), Kawata
patent: 6335554 (2002-01-01), Yoshikawa
patent: 6538925 (2003-03-01), Miida
patent: 6861315 (2005-03-01), Chen et al.
patent: 2002/0014666 (2002-02-01), Ohmi et al.
patent: 2001-156188 (2001-06-01), None
patent: 2001-160555 (2001-06-01), None
patent: 3249811 (2001-11-01), None
patent: 3249812 (2001-11-01), None
patent: 3283872 (2002-03-01), None
Paper No. 29-p-YC-4, The Joint Meeting of Engineers of Applied Physics of Japan, p. 38.

Affiliated with

Also associated with

Rating

Semiconductor memory having storage cells storing multiple... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Semiconductor memory having storage cells storing multiple..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Semiconductor memory having storage cells storing multiple... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3585273