Method of making semiconductor ROM cell programmed using source

Details Method of making semiconductor ROM cell programmed using source Method of making semiconductor ROM cell programmed using source

1992-12-23

1995-07-11

Chaudhuri, Olik

Fishing, trapping, and vermin destroying

437 44, 437 45, 437 52, 437 57, H01L 21265

Patent

active

054321034

ABSTRACT:
ROM cell programmed ON has N+ source implant spaced a given distance from the gate with LDD bridging the gap between the N+ source and the N channel. ROM cell programmed OFF has P+ implanted into this gap so as to completely override the LDD in this gap. The P+ prevents the N channel from forming ohmic connection to the N+ source.

REFERENCES:
patent: 4209349 (1980-06-01), Ho et al.
patent: 4235011 (1980-11-01), Butler et al.
patent: 4268950 (1981-05-01), Chatterjee
patent: 4282646 (1981-08-01), Fortino et al.
patent: 4356041 (1982-10-01), Kosa
patent: 4356623 (1982-11-01), Hunter
patent: 4358889 (1982-11-01), Dickman
patent: 4366613 (1983-01-01), Ogura et al.
patent: 4380866 (1983-04-01), Countryman, Jr. et al.
patent: 4395725 (1983-07-01), Parekh
patent: 4406049 (1983-09-01), Tam et al.
patent: 4420871 (1983-12-01), Scheibe
patent: 4467520 (1984-08-01), Shiotari
patent: 4472871 (1984-09-01), Green et al.
patent: 4513494 (1985-04-01), Batra
patent: 4536944 (1985-08-01), Bracco et al.
patent: 4603468 (1986-08-01), Lam
patent: 4636822 (1987-01-01), Codella et al.
patent: 4649629 (1987-03-01), Miller
patent: 4694556 (1987-09-01), Conner
patent: 4746624 (1988-05-01), Cham et al.
patent: 4775642 (1988-10-01), Chang
patent: 4845045 (1989-07-01), Shacham
patent: 4935379 (1990-06-01), Toyoshima
patent: 4968639 (1990-11-01), Bergonzoni
patent: 5122474 (1992-06-01), Harrington, III
patent: 5219777 (1993-06-01), Kang

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