Static random access memory device having thin film transistor l

Details Static random access memory device having thin film transistor l Static random access memory device having thin film transistor l

1993-07-13

1995-02-21

Limanek, Robert P.

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

Non-single crystal, or recrystallized, semiconductor...

Field effect device in non-single crystal, or...

257393, 257385, 257401, 257903, H01L 2904

Patent

active

053918940

ABSTRACT:
A semiconductor memory device includes a semiconductor substrate, a memory cell formed on the semiconductor substrate and including first and second transfer transistors, first and second driver transistors and first and second thin film transistor loads, and first and second word lines extending generally parallel to each other along a predetermined direction and respectively coupled to gate electrodes of the first and second transfer transistors. Each of the first and second thin film transistor loads include first and second impurity regions which sandwich a channel region formed by a semiconductor layer provided on the semiconductor substrate, and a gate electrode formed by confronting conductor layers and isolated from the channel region. The first driver transistor includes a drain which is coupled to one of the impurity regions of the first thin film transistor load and to a gate of the second driver transistor via a first connection region, and the second driver transistor includes a drain which is coupled to one of the impurity regions of the second thin film transistor load and to a gate of the first driver transistor via a second connection region. The first and second connection regions are independently provided and have the same structure.

REFERENCES:
patent: 4975875 (1990-12-01), Ito
patent: 5028975 (1991-07-01), Nagasawa et al.
patent: 5132771 (1992-07-01), Yamanaka et al.
patent: 5239196 (1993-08-01), Ikeda et al.

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