Semiconductor memory device

Details Semiconductor memory device Semiconductor memory device

1991-02-19

1993-11-30

Mottola, Steven

Static information storage and retrieval

Read/write circuit

Differential sensing

365182, G11C 702

Patent

active

052672085

ABSTRACT:
By provided a dummy region, having a shape similar to and being formed in the same process as, the active regions having transistors that constitute memory cells formed therein, between two transistors, the spacing between the active region and the dummy region is made to be equal to the spacing between other transistors. By reducing the nonuniformity in the gate width of the transistors within the memory cell array regions with the above arrangement, it is possible to prevent the reduction of the transistor performance, and to prevent a performance reduction and the generation of malfunctions due to a delay in the data output time of the semiconductor memory device.

REFERENCES:
patent: 4799089 (1989-01-01), Fukuma et al.
patent: 5105385 (1992-04-01), Ohtsuka et al.

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