Semiconductor memory device and method of driving the same

Details Semiconductor memory device and method of driving the same Semiconductor memory device and method of driving the same

2007-02-13

2007-02-13

Zarabian, Amir (Department: 2827)

Static information storage and retrieval

Read/write circuit

Bad bit

C365S201000, C365S230030

Reexamination Certificate

active

10879552

ABSTRACT:
Provided is directed to a semiconductor memory device and a method of driving the same capable of improving a repair efficiency with comparison to the conventional method which repairs all the redundancy row even when a defective cell is occurred in only one cell, by including: a memory cell array which is comprised of at least more than one redundancy block and redundancy segment by means of dividing it into a plurality of blocks toward a row direction and then dividing the blocks into a plurality of segments; a control circuit for storing a repair information of a defective cell and for repairing the segment generating the defective cell to the redundancy segment according to the repair information by inputting a row address signal and a column address signal.

REFERENCES:
patent: 4918662 (1990-04-01), Kondo
patent: 5907515 (1999-05-01), Hatakeyama
patent: 6646932 (2003-11-01), Kato et al.
patent: 11-178188 (1999-07-01), None
patent: 1997-51414 (1997-07-01), None

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