Split-channel antifuse array architecture

Details Split-channel antifuse array architecture Split-channel antifuse array architecture

2008-07-22

2008-07-22

Sefer, Ahmed (Department: 2826)

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

Field effect device

Having insulated electrode

C257S530000, C257SE27026, C257SE27073, C438S131000

Reexamination Certificate

active

07402855

ABSTRACT:
Generally, the present invention provides a variable thickness gate oxide anti-fuse transistor device that can be employed in a non-volatile, one-time-programmable (OTP) memory array application. The anti-fuse transistor can be fabricated with standard CMOS technology, and is configured as a standard transistor element having a source diffusion, gate oxide, polysilicon gate and optional drain diffusion. The variable gate oxide underneath the polysilicon gate consists of a thick gate oxide region and a thin gate oxide region, where the thin gate oxide region acts as a localized breakdown voltage zone. A conductive channel between the polysilicon gate and the channel region can be formed in the localized breakdown voltage zone during a programming operation. In a memory array application, a wordline read current applied to the polysilicon gate can be sensed through a bitline connected to the source diffusion, via the channel of the anti-fuse transistor. More specifically, the present invention provides an effective method for utilizing split channel MOS structures as an anti-fuse cell suitable for OTP memories.

REFERENCES:
patent: 3423646 (1969-01-01), Cubert et al.
patent: 3634929 (1972-01-01), Yoshida et al.
patent: 4322822 (1982-03-01), McPherson
patent: 4507757 (1985-03-01), McElroy
patent: 4543594 (1985-09-01), Mohsen et al.
patent: 4823181 (1989-04-01), Mohsen et al.
patent: 4899205 (1990-02-01), Hamdy et al.
patent: 5019878 (1991-05-01), Yang et al.
patent: 5068696 (1991-11-01), Yang et al.
patent: 5110754 (1992-05-01), Lowrey et al.
patent: 5163180 (1992-11-01), Eltoukhy et al.
patent: 5241496 (1993-08-01), Lowrey et al.
patent: 5323351 (1994-06-01), Challa
patent: 5646438 (1997-07-01), Frerichs
patent: 5672994 (1997-09-01), Au et al.
patent: 5742555 (1998-04-01), Marr et al.
patent: 5999450 (1999-12-01), Dallabora et al.
patent: 6087707 (2000-07-01), Lee et al.
patent: 6134144 (2000-10-01), Lin et al.
patent: 6295226 (2001-09-01), Yang
patent: 6400632 (2002-06-01), Tanizaki et al.
patent: 6515344 (2003-02-01), Wollesen
patent: 6580145 (2003-06-01), Wu et al.
patent: 6597234 (2003-07-01), Reber et al.
patent: 6611040 (2003-08-01), Gelsomini et al.
patent: 6627970 (2003-09-01), Fuller et al.
patent: 6630724 (2003-10-01), Marr
patent: 6667902 (2003-12-01), Peng
patent: 6671040 (2003-12-01), Fong et al.
patent: 6713839 (2004-03-01), Madurawe
patent: 6714450 (2004-03-01), Bertrand et al.
patent: 6829169 (2004-12-01), Ganivet et al.
patent: 6936909 (2005-08-01), Marr et al.
patent: 6940751 (2005-09-01), Peng et al.
patent: 7030458 (2006-04-01), Marr
patent: 7101738 (2006-09-01), Marr et al.
patent: 7126871 (2006-10-01), Marr et al.
patent: 2002/0027822 (2002-03-01), Candeller et al.
patent: 2002/0074616 (2002-06-01), Chen et al.
patent: 2003/0052320 (2003-03-01), Tran et al.
patent: 2003/0071315 (2003-04-01), Peng
patent: 2003/0098495 (2003-05-01), Amo et al.
patent: 2003/0109090 (2003-06-01), Bertin et al.
patent: 2003/0202376 (2003-10-01), Peng et al.
patent: 2003/0206467 (2003-11-01), Peng et al.
patent: 2004/0004269 (2004-01-01), Fifield et al.
patent: 2004/0023440 (2004-02-01), Ito et al.
patent: 2004/0065941 (2004-04-01), Marr
patent: 2004/0135198 (2004-07-01), Murahama
patent: 2004/0156234 (2004-08-01), Peng et al.
patent: 2006/0244099 (2006-11-01), Kurjanowicz
patent: 4-44273 (1992-02-01), None

Affiliated with

Also associated with

Rating

Split-channel antifuse array architecture does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Split-channel antifuse array architecture, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Split-channel antifuse array architecture will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2804603