Patent ID: 11935926
Assignee: SK HYNIX INC.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 16:
17. A semiconductor device, comprising:
a stack structure including a plurality of horizontal recesses vertically spaced apart from each other;
a blocking layer lining the horizontal recesses;
an interface control layer that covers the blocking layer, the interface control layer including a conductive barrier element and a dielectric barrier element;
an interface compound layer disposed between the interface control layer and the blocking layer; and
a gate electrode filled within the horizontal recesses and over the interface control layer,
wherein the interface control layer comprises:
a first titanium nitride layer;
a second titanium nitride layer; and
a titanium oxynitride layer disposed between the first titanium nitride layer and the second titanium nitride layer,

wherein the blocking layer includes aluminum oxide, and the interface compound layer includes AlTiON or AlTiO.