Non-volatile ferroelectric memory with folded bit lines and meth

Details Non-volatile ferroelectric memory with folded bit lines and meth Non-volatile ferroelectric memory with folded bit lines and meth

1992-11-17

1994-12-06

Yoo, Do Hyun

Static information storage and retrieval

Systems using particular element

Ferroelectric

365 51, 365 63, 257295, G11C 1122

Patent

active

053716990

ABSTRACT:
A non-volatile ferroelectric memory having folded bit lines both reduces the size of the memory while also eliminating noise interference commonly associated with non-volatile ferroelectric memories having an open bit line architecture. The memory provides two pairs of coincident word and plate lines associated with each row, viz., plate line A paired with word line B, and plate line B paired with word line A. The plate line of a pair may overlie or underlie the word line of the pair, and one may have the same width or a different width as the other of the pair, but preferably the elements of the pair are generally aligned, and the elements of the other pair are aligned with themselves, the two pairs being distally spaced apart. Each cell in the row is connected at the appropriate location to a word line of one of the pairs and a plate line of the other pair. Therefore, the word line and plate line of any single cell are not coincident. Further, adjacent cells in any row do not share the same word line or plate line, but are connected to the other word line or plate line.

REFERENCES:
patent: 4873664 (1989-10-01), Eaton, Jr.
patent: 5070385 (1991-12-01), Evans, Jr. et al.
patent: 5099305 (1992-03-01), Takenaka

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