N -ary mask-programmable memory

Active solid-state devices (e.g. – transistors – solid-state diode – Field effect device – Having insulated electrode

Reexamination Certificate

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C257S211000, C257S368000, C257S401000, C341S056000

Reexamination Certificate

active

07633128

ABSTRACT:
The present invention discloses an N-ary mask-programmable memory (N-MPM). N-MPM cells can have N cell-states, with N>2. N-MPM cells could be geometry-defined, junction-defined, or both. Based on an nF-opening process (n≧1), partial-contacts with feature size <1F can be implemented with an nF-opening mask with feature size ≧1F. N can be a non-integral power of 2. In this case, each memory cell represents fractional bits.

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