Semiconductor memory device having bit lines less liable to have

Details Semiconductor memory device having bit lines less liable to have Semiconductor memory device having bit lines less liable to have

1989-07-21

1990-10-09

Fears, Terrell W.

Static information storage and retrieval

Hardware for storage elements

Shields

365 51, 365149, G11C 1300

Patent

active

049624768

ABSTRACT:
A semiconductor memory device according to the present invention has a plurality of memory cells of the one-transistor and one-capacitor type, and a plurality of bit lines coupled to columns of the memory cells, respectively, and disposed in an insulating film over the memory cells, and a common upper electrode is shared by the storage capacitors of the memory cells and has shield portions interposed between the bit lines, so that the adjacent bit lines are less liable to be capacitively coupled by virtue of the shield portions, thereby allowing data bit signals to propagate without any undesirable influence of the adjacent bit lines.

REFERENCES:
patent: 4914628 (1990-04-01), Nishimura

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