Patent ID: 9082487
Filing Date: 2015-07-14
Classification: G11C

Abstract:
1. A program method of a nonvolatile memory device, comprising: a step of precharging the bit line of the selected memory cell; a pre-program verify step for verifying a threshold voltage of a selected memory cell; a step of setting a bit line voltage of the selected memory cell according to the threshold voltage of the selected memory cell which is determined through the pre-program verify step; a step of applying a program voltage to the selected memory cell set with the bit line voltage; and a post-program verify step for verifying a programmed state of the selected memory cell applied with the program voltage, wherein the pre-program verify step comprises a step of discharging the precharged bit line of the selected memory cell according to the threshold voltage of the selected memory cell, and wherein the bit line voltage of the selected memory cell, which is discharged, is maintained during the step of applying the program voltage.