Ferroelectric element and a ferroelectric gate device using...

Details Ferroelectric element and a ferroelectric gate device using... Ferroelectric element and a ferroelectric gate device using...

2005-02-22

2005-02-22

Nguyen, Long (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Gating

Utilizing three or more electrode solid-state device

C327S421000, C365S145000

Reexamination Certificate

active

06859088

ABSTRACT:
A ferroelectric gate device which comprises a ferroelectric capacitor (1), a switching element (2) serving as a resistor of a capacitor depending on the voltage applied, and a field-effect transistor (6) having a source, a drain and a gate, said ferroelectric capacitor (1) having an input terminal (IN) at one end, the other end of said ferroelectric capacitor (1) being connected to one end of said switching element (2), the other end of said switching element (2) being connected to the gate of said field-effect transistor (6), by applying a voltage to said input terminal, said switching element (2) serving as a resistor when a voltage higher than the coercive voltage (Vc) of a ferroelectric substance which said ferroelectric capacitor (1), and by applying a voltage to said input terminal, said switching element (2) serving as a capacitor when a voltage lower than the coercive voltage (Vc) of said ferroelectric substance is applied to said ferroelectric capacitor (1).

REFERENCES:
patent: 5523964 (1996-06-01), McMillan et al.
patent: 6191441 (2001-02-01), Aoki et al.
patent: 20030174532 (2003-09-01), Matsushita et al.
patent: 0 441 584 (1991-08-01), None
patent: 4-171758 (1992-06-01), None
patent: P2003-173673 (2003-06-01), None

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