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

Claim 12:
13. A semiconductor device comprising:
a landing pad on a substrate;
a lower electrode structure including a first lower electrode on the landing pad and a second lower electrode on the first lower electrode;
a buried layer between the first lower electrode and the second lower electrode;
a first supporter pattern on a side surface of the lower electrode structure, the first supporter pattern including a supporter hole;
a dielectric layer on a surface of each of the lower electrode structure and the first supporter pattern; and
an upper electrode on the dielectric layer,
wherein the first lower electrode includes a first outer protective layer, a first conductive layer between opposing sidewalls of the first outer protective layer, and a first inner protective layer between opposing sidewalls of the first conductive layer,
wherein the second lower electrode includes a second outer protective layer, a second conductive layer between opposing sidewalls of the second outer protective layer, and a second inner protective layer between opposing sidewalls of the second conductive layer, and
wherein each of the first outer protective layer and the second outer protective layer comprises titanium oxide, each of the first conductive layer and the second conductive layer includes titanium nitride, and each of the first inner protective layer and the second inner protective layer includes titanium silicon nitride.