Patent ID: 11973035
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 18:
19. An electronic system, comprising:
a main board;
a semiconductor memory device on the main board; and
a controller on the main board and electrically connected to the semiconductor memory device,
wherein the semiconductor memory device includes:
a substrate connected to the controller,
a stacked structure on the substrate, the stacked structure including word lines,
a channel structure penetrating the stacked structure,
a dummy conductive structure extending through at least a portion of the word lines to contact the substrate, the dummy conductive structure including a first metal core pattern and a first spacer extending along a side surface of the first metal core pattern,
and
a through contact plug including a second metal core pattern electrically connected to the controller and a second spacer extending along a side surface of the third metal core pattern,

wherein a height of an upper surface of the dummy conductive structure being greater than a height of an upper surface of the channel structure relative to an upper surface of the substrate.