Patent ID: 11889688
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 11:
12. An electronic system, comprising:
a semiconductor device including an input/output pad electrically connected to a peripheral circuit; and
a controller electrically connected through the input/output pad to the semiconductor device and configured to control the semiconductor device,
wherein the semiconductor device includes:
a substrate including a cell array region and a key region;
a stack structure on the cell array region, the stack structure including vertically stacked and spaced apart electrodes;
a dummy structure on the key region, wherein an upper surface of the dummy structure includes a plurality of upwardly extending protrusions;
a vertical channel structure penetrating the stack structure to connect the substrate;
an interlayer dielectric layer on the stack structure and the dummy structure, wherein the interlayer dielectric layer on the upper surface of the dummy structure conforms with the upper surface of the dummy structure and includes a key pattern vertically overlapping the plurality of upwardly extending protrusions of the dummy structure, and a top surface of the interlayer dielectric layer on the stack structure is higher than a top surface of the interlayer dielectric layer on the dummy structure; and
a capping layer on the key region and covering the key pattern, wherein the capping layer includes polysilicon.