Semiconductor memory with enhanced capacity

Details Semiconductor memory with enhanced capacity Semiconductor memory with enhanced capacity

1991-05-13

1994-05-03

Hille, Rolf

Static information storage and retrieval

Format or disposition of elements

365149, 257308, 257309, G11C 502, G11C 1124

Patent

active

053093860

ABSTRACT:
A semiconductor memory wherein a plurality of cells are arranged in a longitudinal direction of active regions, each cell having a node electrode and a contact hole for the node electrode, and a bit line contact region and the active region by half at the least on a semiconductor substrate having the active regions and word lines which are extended in a direction perpendicular to the longitudinal direction of the active regions, the bit line contact regions of adjacent bit lines are shifted by a quarter in the longitudinal direction between the adjacent cells in a direction in which the word lines are extended, and the projected shape of the node electrode is a polygon having more angles than a quadrangle which is substantially adapted as the node electrode and having at least one of interior angles set to be obtuse so that the projected area is substantially larger than that of the quadrangle.

REFERENCES:
patent: 4300212 (1981-11-01), Simko
patent: 4464734 (1984-08-01), McElroy
patent: 4763299 (1988-08-01), Hazani
patent: 5140389 (1992-08-01), Kimura et al.

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