Patent ID: 11889700
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 15:
16. A semiconductor device, comprising:
a substrate;
gate electrodes stacked on the substrate and spaced apart from each other;
channel structures extending in the gate electrodes in a first direction perpendicular to an upper surface of the substrate, each of the channel structures including a channel layer;
an insulating region side by side with the gate electrodes in a second direction perpendicular to the first direction; and
dummy channel structures extending into the insulating region in the first direction, each of the dummy channel structures including the channel layer,
wherein each of the dummy channel structures has a first region in an upper portion of the insulating region along the first direction and includes the channel layer, and a second region, which includes a lower end along the first direction and does not include the channel layer,
wherein the lower end of each of the dummy channel structures is at a level higher than a level of a lower end of each of the channel structures in the first direction with the substrate providing a base reference level.