Patent ID: 11967614
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H  B | IPC H

Claim 0:
1. A semiconductor device comprising:
a fin-type pattern disposed on a substrate and including first and second sidewalls which extend in a first direction;
a plurality of nanosheets disposed on the fin-type pattern, spaced apart from each other in a second direction intersecting the first direction; and
an epitaxial pattern disposed on the fin-type pattern,
wherein the epitaxial pattern includes first and second epitaxial sidewalls which extend from the first and second sidewalls of the fin-type pattern, respectively, and an epitaxial top surface which connects the first and second epitaxial sidewalls,
wherein the first epitaxial sidewall includes a first epitaxial lower sidewall, a first epitaxial upper sidewall, and a first epitaxial connecting sidewall which connects the first epitaxial lower sidewall and the first epitaxial upper sidewall,
wherein the second epitaxial sidewall includes a second epitaxial lower sidewall, a second epitaxial upper sidewall, and a second epitaxial connecting sidewall which connects the second epitaxial lower sidewall and the second epitaxial upper sidewall,
wherein the first and second epitaxial lower sidewalls are at a level the same as or higher than a level of an uppermost surface of the fin-type pattern,
wherein the first and second epitaxial connecting sidewalls extend perpendicular to the top surface of the substrate,
wherein the first epitaxial lower sidewall is directly connected to the first epitaxial connecting sidewall and the second epitaxial lower sidewall is directly connected to the second epitaxial connecting sidewall,
wherein a distance between the first and second epitaxial upper sidewalls in a third direction intersecting the first direction and the second direction decreases as a distance from the fin-type pattern increases in the second direction,
wherein the first and second epitaxial lower sidewalls extend in parallel to a top surface of the substrate,
wherein the first and second epitaxial upper sidewalls are formed by crystal planes included in a first crystal plane group, and
wherein the epitaxial top surface is formed by crystal planes includes a second crystal plane group which is different from the first crystal plane group.