Contactless mask programmable ROM

Details Contactless mask programmable ROM Contactless mask programmable ROM

2007-06-05

2007-06-05

Prenty, Mark V. (Department: 2822)

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

Field effect device

Having insulated electrode

C257S392000, C365S104000

Reexamination Certificate

active

10509908

ABSTRACT:
A contactless Mask ROM is described, comprising a plurality of MOS-type memory cells. The memory cells include a plurality of first memory cells and a plurality of second memory cells. The first memory cells have a first channel conductivity so that they are depletion-mode MOS transistors, and the second memory cells have a second channel conductivity so that they are enhanced-mode MOS transistors. In the contactless Mask ROM, a memory cell shares two diffusions with two adjacent memory cells that are aligned with the memory cell along a first direction.

REFERENCES:
patent: 4350992 (1982-09-01), Tubbs
patent: 5600171 (1997-02-01), Makihara et al.

Affiliated with

Also associated with

Rating

Contactless mask programmable ROM does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Contactless mask programmable ROM, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Contactless mask programmable ROM will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3855989