Samsung Electronics Co., Ltd.

Sung Su Moon

Jae Duk Lee

So Hyeon Lee

Ik-Hyung Joo

A semiconductor memory device includes; a first stacked structure including a first staircase portion, a second stacked structure on the first stacked structure and including a second staircase portion overlapping the first staircase portion, a first contact plug penetrating the first stacked structure and the second stacked structure, electrically connected to the first stacked structure and not electrically connected to the second stacked structure, and a second contact plug penetrating the first stacked structure and the second stacked structure, electrically connected to the second stacked structure and not electrically connected to the first stacked structure.

Growing community of inventors

Hwaseong-si, South Korea

Sung Su Moon