Semiconductor memory device

Details Semiconductor memory device Semiconductor memory device

2008-01-25

2010-10-19

Nguyen, Dao H (Department: 2818)

Active solid-state devices (e.g., transistors, solid-state diode

Field effect device

Having insulated electrode

C257S296000, C257S311000, C257S905000, C257S906000, C257S908000, C257SE21009, C257SE21664, C257SE21665, C257SE27104, C438S003000, C438S004000, C438S228000, C438S239000, C438S241000, C365S097000, C365S145000, C365S149000, C365S157000, C365S158000

Reexamination Certificate

active

07816717

ABSTRACT:
A semiconductor memory device, comprising: a semiconductor substrate; a memory cell section comprising a memory transistor provided on the semiconductor substrate, the memory transistor including a first gate electrode provided on the semiconductor substrate with a gate insulating film interposed therebetween, and a source and drain provided at both sides of the first gate electrode on the semiconductor substrate, and a ferroelectric capacitor provided above the memory transistor, the ferroelectric capacitor including a first electrode film connected to any one of a source and drain of the memory transistor, a second electrode film connected to the other one of the drain and source of the memory transistor, and a ferroelectric film provided between the first electrode film and the second electrode film, the memory cell section having the memory transistor and the ferroelectric capacitor connected in parallel to each other; and a select transistor section, comprising a select transistor provided at an end of the memory cell section, the select transistor including a second gate electrode provided on the semiconductor substrate with the gate insulating film interposed therebetween, and a source and drain provided at both sides of the second gate electrode on the semiconductor substrate, and a third electrode film connected to the source and drain of the select transistor and connected to a bit line via a bit line contact.

REFERENCES:
patent: 6735107 (2004-05-01), Takashima
patent: 6759251 (2004-07-01), Ozaki
patent: 7022531 (2006-04-01), Ozaki et al.
patent: 2002-94022 (2002-03-01), None

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