Patent ID: 8654586
Filing Date: 2014-02-18
Classification: G11C,H01L

Abstract:
1. A nonvolatile semiconductor memory device comprising: a memory unit; and a control unit, the memory unit including: a multilayer structure including a plurality of electrode films and a plurality of inter-electrode insulating films alternately stacked in a first direction; a first semiconductor pillar piercing the multilayer structure in the first direction; a plurality of first memory layers provided between each of the electrode films and the first semiconductor pillar; a first inner insulating film provided between the first memory layer and the first semiconductor pillar; a first outer insulating film provided between each of the electrode films and the first memory layer; and a first wiring electrically connected to one end of the first semiconductor pillar, and the control unit, in an operation of performing at least one of injection of an electron into at least one of the plurality of first memory layers and extraction of a hole from the at least one of the first memory layers, performing a first operation of setting the first wiring at a first potential and setting at least one of the electrode films at a second potential higher than the first potential, the at least one of the first memory layers being disposed between the at least one of the electrode films and the first semiconductor pillar, and then performing a second operation of setting the first wiring at a third potential and setting the at least one of the electrode films at a fourth potential lower than the third potential.