William Park & Associates Patent Ltd.
Semiconductor memory device and method of operating the same
A method of operating a semiconductor memory device includes a memory array having memory cell strings including a first and a second memory cell groups having memory cells, a first and a second dummy elements, a drain select transistor and a source select transistor, wherein the first memory cell group and the second memory cell group are arranged between the drain select transistor and the source select transistor; connecting electrically the first memory cell group to the second memory cell group during a program operation or a read operation of the first memory cell group or the second memory cell group; and performing separately an erase operation of the first memory cell group and an erase operation of the second memory cell group, selecting simultaneously one of the first dummy element and the second dummy element during the erase operation of the selected memory cell group.
SK Hynix Inc.
G G H
G11C G11C H01L
inventional inventional inventional
Jung Ryul Jum Soo Sang Hyun
Ahn Kim Oh