公开(公告)号：US11380403B2

公开(公告)日：2022-07-05

申请号：US17199062

申请日：2021-03-11

Applicant: Samsung Electronics Co., Ltd.

Inventor： Sunkyu Yang ,  Wontaeck Jung

IPC: G11C16/04 ,  G11C16/16 ,  G11C16/34 ,  H01L27/11582

Abstract: In a method of erasing data in a nonvolatile memory device including one or more memory blocks, a plurality of memory cells are disposed in a vertical direction in each memory block. An erase loop is performed once or more on an entire of a first memory block in the one or more memory blocks. After the erase loop is successfully completed, a first partial verification operation is performed on one or more groups of a plurality of groups in the first memory block. After the first partial verification operation is successfully completed, it is determined whether a second partial verification operation is required for a group of the one or more groups. The second partial verification operation is performed on one or more subgroups of a plurality of subgroups in a first group requiring the second partial verification operation among the plurality of groups.

公开(公告)号：US20220013178A1

公开(公告)日：2022-01-13

申请号：US17199062

申请日：2021-03-11

Applicant: Samsung Electronics Co., Ltd.

Inventor： Sunkyu Yang ,  Wontaeck Jung

IPC: G11C16/16 ,  G11C16/34 ,  G11C16/04

Abstract: In a method of erasing data in a nonvolatile memory device including one or more memory blocks, a plurality of memory cells are disposed in a vertical direction in each memory block. An erase loop is performed once or more on an entire of a first memory block in the one or more memory blocks. After the erase loop is successfully completed, a first partial verification operation is performed on one or more groups of a plurality of groups in the first memory block. After the first partial verification operation is successfully completed, it is determined whether a second partial verification operation is required for a group of the one or more groups. The second partial verification operation is performed on one or more subgroups of a plurality of subgroups in a first group requiring the second partial verification operation among the plurality of groups.