Patent ID: 11901291
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 15:
16. A semiconductor device comprising:
a landing pad on a substrate;
a lower electrode on the landing pad, the lower electrode including an outer protective layer, a conductive layer having a U-shaped cross-sectional surface between opposing sidewalls of the outer protective layer, and an inner protective layer between opposing sidewalls of the U-shaped cross-sectional surface of the conductive layer;
a first supporter pattern on a side surface of the lower electrode, the first supporter pattern including a supporter hole;
a first metal layer between the conductive layer and the first supporter pattern, the first metal layer overlapping the outer protective layer in a vertical direction and including an upper surface at a lower level than an upper surface of the first supporter pattern;
a dielectric layer on a surface of each of the lower electrode and the first supporter pattern; and
an upper electrode on the dielectric layer,
wherein the outer protective layer includes titanium oxide, the conductive layer includes titanium nitride, and the inner protective layer includes titanium silicon nitride, and
wherein, in a horizontal cross-sectional view, the outer protective layer and the first metal layer each have an arc shape and together surround the conductive layer.