Ferroelectric memory device

Static information storage and retrieval – Systems using particular element – Ferroelectric

Reexamination Certificate

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Details

C365S202000, C365S228000, C365S189090

Reexamination Certificate

active

07023720

ABSTRACT:
A ferroelectric memory device having a function of preventing destruction of data stored in an unselected memory cell. The ferroelectric memory device includes a protection circuit for protecting data in the unselected memory cell. The protection circuit is provided on an unselected-bitline-voltage supply line and an unselected-wordline-voltage supply line.

REFERENCES:
patent: 6081461 (2000-06-01), Shirley et al.
patent: 6788564 (2004-09-01), Hamada
patent: 6862236 (2005-03-01), Maruyama
patent: 07-106450 (1995-04-01), None
patent: 07-235648 (1995-09-01), None
patent: A 9-116107 (1997-05-01), None
U.S. Appl. 10/393,439, filed Mar. 20, 2003, Yamamura.
U.S. Appl. 10/747,395, filed Dec. 30, 2003, Maruyama.
U.S. Appl. 10/737,959, filed Dec. 18, 2003, Maruyama.
U.S. Appl. 10/752,184, filed Jan. 7, 2004, Maruyama.
U.S. Appl. 10/754,691, filed Jan. 12, 2004, Maruyama.
U.S. Appl. 10/758,179, filed Jan. 16, 2004, Maruyama.

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