Resistance semiconductor memory device having...

Static information storage and retrieval – Addressing – Plural blocks or banks

Reexamination Certificate

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C365S230060

Reexamination Certificate

active

07907467

ABSTRACT:
A resistance semiconductor memory device of a three-dimensional stack structure, and a word line decoding method thereof, are provided. In the resistance semiconductor memory device of a three-dimensional stack structure, in which a plurality of word line layers and a plurality of bit line layers are disposed alternately and perpendicularly, and in which a plurality of memory cell layers are disposed between the word line layers and the bit line layers; the resistance semiconductor memory device includes a plurality of bit lines disposed on each of the bit line layers in a first direction as a length direction; a plurality of sub word lines disposed on each of the word line layers in a second direction as a length direction, intersected to the first direction; a plurality of memory cells disposed on the memory cell layers; and a plurality of main word lines individually disposed on a main word line layer specifically adapted over the bit line layers and the word line layers, in the second direction as a length direction, each one of the plurality of main word lines being shared by a predetermined number of sub word lines. An efficient word line decoding adequate to high integration can be achieved.

REFERENCES:
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patent: 6538953 (2003-03-01), Hidaka
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patent: 2005/0101088 (2005-05-01), Scheuerlein et al.
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patent: 09-180444 (1997-07-01), None
patent: 2005-159359 (2005-06-01), None
patent: 10-2002-0072020 (2002-09-01), None
English Abstract for Publication No. 09-180444, (Jul. 11, 1997).
English Abstract for Publication No. 10-2002-0072020, (Sep. 14, 2002).
English Abstract for Publication No. 2005-159359, (Jun. 16, 2005).

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