Patent ID: 11862556
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 13:
14. A semiconductor device, comprising:
a first substrate;
circuit devices disposed on the first substrate;
a first interconnection structure electrically connected to the circuit devices;
a second substrate disposed on an upper portion of the first interconnection structure;
gate electrodes spaced apart from each other and stacked on the second substrate in a direction perpendicular to an upper surface of the second substrate;
channel structures penetrating the gate electrodes, extending perpendicularly to the second substrate, and including a channel layer; and
a ground interconnection structure including an upper via filling a via hole with the same material as the second substrate and extending from a lower surface of the second substrate towards the first substrate,
wherein the upper via includes a barrier layer covering an internal side wall and a bottom surface of the via hole and a semiconductor layer disposed on the barrier layer and filling the via hole.