Patent ID: 9218853
Filing Date: 2015-12-22
Classification: G11C

Abstract:
1. A control method for a nonvolatile memory device with a vertically stacked structure, the nonvolatile memory device comprising a substrate, a common source line and plural memory blocks, the common source line being formed on the substrate, the plural memory blocks being disposed over the substrate, each memory block comprising a cell string connected between a bit line and the common source line, the control method comprising steps of: selecting a first memory block of the plural memory blocks as an active memory block when the first memory block is in a program mode or a read mode, and selecting one of the remaining memory blocks as a second memory block, wherein the second memory block is inactive when the first memory block is in the program mode or the read mode; and providing a ground voltage to the bit line of the second memory block and conducting the cell string of the second memory block, so that the ground voltage is transmitted from the bit line to the common source line of the substrate through the cell string.