Semiconductor memory cells having common contact hole

Details Semiconductor memory cells having common contact hole Semiconductor memory cells having common contact hole

1989-05-30

1991-01-08

Clawson, Jr., Joseph E.

Static information storage and retrieval

Systems using particular element

Capacitors

365182, 357 236, 357 41, G11C 1124

Patent

active

049841998

ABSTRACT:
A dynamic type semiconductor device comprises a memory cell array including a plurality of cell groups, each of the cell groups including four adjacent memory cells disposed in a point symmetry fashion, with a single contact hole formed at the center of the point symmetry to be common to the four memory cells, in which the four memory cells and bit lines are connected through the single contact hole.

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patent: 4654825 (1987-03-01), Riverson
patent: 4737837 (1988-04-01), Lee
patent: 4763178 (1988-08-01), Sakui et al.
patent: 4887137 (1989-12-01), Yoneda et al.
M. McCoy, "Chip Pirates: Beware of the Law" IEEE Spectrum, 1985, pp. 74-80.

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