Patent ID: 9378826
Filing Date: 2016-06-28
CPC Classification: G11C

Claim Text:
1. A nonvolatile memory device which includes memory cells stacked in a direction perpendicular to a substrate, the device comprising: a first memory cell string connected to a selected bit line and a selected string selection line; a second memory cell string connected to the selected bit line and an unselected string selection line; and a third memory cell string connected to an unselected bit line, wherein during an initial precharge section of a program operation, a turn on voltage is initially applied to the unselected string selection line, the selected string selection line, and the selected and unselected bit lines, and during a bit line setup section of the program operation following the initial precharge section, a bit line program voltage is applied to the selected bit line, and the turn-on voltage provided to the unselected string selection line is changed to a turn-off voltage.