Patent ID: 8107295
Filing Date: 2012-01-31
Classification: G11C

Abstract:
1. A nonvolatile memory device comprising: a memory cell array connected to a plurality of word lines; and a voltage generator for supplying a select read voltage to a select word line and an unselect read voltage to an unselect word line among the plurality of word lines when a read operation is performed, wherein the voltage generator generates the unselect read voltage having different level according to whether the unselect word line is adjacent to the select word line or not; and wherein the voltage generator supplies an unselect read voltage to at least one between an upper word line and a lower word line adjacent to the select word line when a threshold voltage of a select memory cell connected to the select word line is decreased, the unselect read voltage being lower than unselect read voltages supplied to other unselect word lines.