Patent ID: 11963361
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 1:
2. The integrated circuit device as claimed in claim 1, further comprising:
a first filling insulating layer, a first protective insulating layer, and a second filling insulating layer, wherein:
the first filling insulating layer is on the substrate,
the first filling insulating layer fills the interconnection region and the peripheral circuit region,
the first filling insulating layer has an upper surface that is coplanar with an upper surface of the first cell stack structure,
the first protective insulating layer covers the first cell stack structure and the first filling insulating layer,
the second filling insulating layer is on the first protective insulating layer,
the second filling insulating layer fills the interconnection region and the peripheral circuit region,
the second filling insulating layer has an upper surface that is coplanar with an upper surface of the second cell stack structure, and
the second filling insulating layer encompasses a periphery of the dummy stack structure.