Nonvolatile ferroelectric perpendicular electrode cell,...

Details Nonvolatile ferroelectric perpendicular electrode cell,... Nonvolatile ferroelectric perpendicular electrode cell,...

2007-01-30

2007-01-30

Nguyen, Van Thu (Department: 2824)

Static information storage and retrieval

Interconnection arrangements

Ferroelectric

C365S151000, C365S175000

Reexamination Certificate

active

11057167

ABSTRACT:
A nonvolatile ferroelectric perpendicular electrode cell comprises a ferroelectric capacitor and a serial PN diode switch. The ferroelectric capacitor includes a word line perpendicular electrode as a first electrode and a storage perpendicular electrode as a second electrode apart at a predetermined interval from the word line perpendicular electrode to have a column type, where a ferroelectric material is filled in a space where the first electrode are separated from the second electrode. The serial PN diode switch, which is connected between a bit line and the ferroelectric capacitor, selectively switches a current direction between the bit line and the ferroelectric capacitor depending on voltage change between the bit line and the ferroelectric capacitor.

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