SEMICONDUCTOR STORAGE DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a semiconductor storage device which does not require any refresh while the main storage portion is formed of a capacitor which accumulates charges as the binary-level information and an access transistor for controlling input and output of charges to and from the capacitor.

SOLUTION: The semiconductor storage device comprises the capacitor which holds charges depending on a logical level of the storage information expressed with the binary-level information and includes a storage node, the access transistor for controlling input and output of charges accumulated in the capacitor, and a latch circuit which is located on the semiconductor substrate to maintain a potential of the storage node of the capacitor. At least one of the circuit elements structuring the latch circuit is located at the upper part of the access transistor.

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