Semiconductor memory device
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United States of America Patent
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Jun 14, 2016
Grant Date -
Oct 8, 2015
app pub date -
Jun 17, 2015
filing date -
Sep 7, 2011
priority date (Note) -
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Abstract
According to one embodiment, a semiconductor memory device includes a memory cells, a selection transistor, a memory string, a block, and a transfer circuit. The memory cells are stacked on a semiconductor substrate. In the memory string, the memory cells and the selection transistor are connected in series. The block includes a plurality of memory strings. In data write and read, the transfer circuit transfers a positive voltage to a select gate line associated with a selected memory string in a selected block, and a negative voltage to a select gate line associated with an unselected memory string in the selected block, and to a select gate line associated with an unselected block.
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