Programmable device having antifuses without programmable materi

Details Programmable device having antifuses without programmable materi Programmable device having antifuses without programmable materi

1999-05-10

2000-11-28

Nelms, David

Electronic digital logic circuitry

Multifunctional or programmable

Array

326 40, H03K 19177

Patent

active

061540544

ABSTRACT:
A field programmable gate array has antifuses disposed over logic modules. Each of these antifuses includes a conductive plug and an overlaying region of programmable material (for example, amorphous silicon). To program one of these antifuses, an electric connection is formed through the programmable material to couple the conductive plug to a metal conductor that overlays the region of programmable material. The metal conductor includes a layer of a barrier metal to separate another metal of the conductor (for example, aluminum from an aluminum layer) from migrating into the programmable material when the antifuse is unprogrammed. In some embodiments, less than three percent of all antifuses of the field programmable gate array has a corner (from the top-down perspective) of the region of programmable material that is disposed (within lateral distance DIS of the conductive plug) underneath the metal conductor of that antifuse. In some embodiments, less than seventy-five percent of all antifuses of the field programmable gate array have an edge of the region of programmable material disposed (within lateral distance DIS of the conductive plug) underneath the metal conductor of that antifuse. Other antifuse structures and methods are also disclosed for preventing programmable material corners and/or edges from compromising yield and/or reliability of programmable devices.

REFERENCES:
patent: 4823181 (1989-04-01), Mohsen et al.
patent: 4873459 (1989-10-01), El Gamal et al.
patent: 4876220 (1989-10-01), Mohsen et al.
patent: 4943538 (1990-07-01), Mohsen et al.
patent: 5055718 (1991-10-01), Galbraith et al.
patent: 5057451 (1991-10-01), McCollum
patent: 5070384 (1991-12-01), McCollum et al.
patent: 5087958 (1992-02-01), Chen et al.
patent: 5122685 (1992-06-01), Chan et al.
patent: 5130777 (1992-07-01), Galbraith et al.
patent: 5134457 (1992-07-01), Hamdy et al.
patent: 5163180 (1992-11-01), Eltoukhy et al.
patent: 5171715 (1992-12-01), Husher et al.
patent: 5196724 (1993-03-01), Gordon et al.
patent: 5233217 (1993-08-01), Dixit et al.
patent: 5308795 (1994-05-01), Hawley et al.
patent: 5362676 (1994-11-01), Gordon et al.
patent: 5371390 (1994-12-01), Mohsen
patent: 5373169 (1994-12-01), McCollum et al.
patent: 5387812 (1995-02-01), Forouhi et al.
patent: 5404029 (1995-04-01), Husher et al.
patent: 5411917 (1995-05-01), Forouhi et al.
patent: 5412244 (1995-05-01), Hamdy et al.
patent: 5424655 (1995-06-01), Chua
patent: 5449947 (1995-09-01), Chen et al.
patent: 5464790 (1995-11-01), Hawley
patent: 5495181 (1996-02-01), Kolze
patent: 5498895 (1996-03-01), Chen
patent: 5502315 (1996-03-01), Chua et al.
patent: 5510646 (1996-04-01), Forouhi et al.
patent: 5519248 (1996-05-01), Yan et al.
patent: 5557136 (1996-09-01), Gordon et al.
patent: 5592016 (1997-01-01), Go et al.
patent: 5619063 (1997-04-01), Chen et al.
patent: 5663091 (1997-09-01), Yen et al.
patent: 5670403 (1997-09-01), Chen
patent: 5701027 (1997-12-01), Gordon et al.
patent: 5753528 (1998-05-01), Forouhi et al.
patent: 5763299 (1998-06-01), McCollum et al.
patent: 5763898 (1998-07-01), Forouhi et al.
patent: 5831448 (1998-11-01), Kean
patent: 5858817 (1999-01-01), Bansal
S. Brown, et al., "Field Programmable Gate Arrays", pp. 1-43 and 88-202 (1992).
Actel FPGA Data Book and Design Guide, pp. ii through 7-8 (1996).
QuickLogic Data Book 1996/97, pp. i through 6-36.
Actel 54SX Family FPGAs, pp. 1 through 35 (Mar. 1998).

Affiliated with

Also associated with

Rating

Programmable device having antifuses without programmable materi does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Programmable device having antifuses without programmable materi, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Programmable device having antifuses without programmable materi will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1729504