Patent · US Expired

Double-gated semiconductor memory device

US5057898A · kind A · utility

42Cited by
4References
9Claims
0Family size

Assignee

Inventors

Key dates

Filing dateNov 20, 1990
Grant dateOct 15, 1991
Priority date
Expiry dateNov 20, 2010

Classification

  • Technology area (CPC Y)Emerging Cross-Sectional Technologies
  • CPC primaryY10S257/903

Abstract

A double-gated MOS type semiconductor memory device having a pair of inverters each of which comprises a bulk MOS transistor formed in a semiconductor substrate and having a first gate electrode on the substrate, and a complementary type MOS transistor stacked over and connected with the bulk MOS transistor, the complementary tyupe MOS transistor being composed of a first insulating film, a semiconductor active layer, a second insulating film and a second gate electrode, laminated upwardly in this order on the first gate electrode, and a process for preparing the double-gated MOS type semiconductor memory device.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.