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

Claim 16:
17. A semiconductor device comprising:
a first fin-type pattern disposed in a first region of a substrate and including first and second sidewalls which extend in a first direction;
a plurality of first nanosheets disposed on the first fin-type pattern, spaced apart from each other in a second direction intersecting the first direction;
a second fin-type pattern disposed in a second region of the substrate and including third and fourth sidewalls which extend in a third direction;
a plurality of second nanosheets disposed on the second fin-type pattern, spaced apart from each other in a fourth direction intersecting the third direction;
a first epitaxial pattern disposed on the first fin-type pattern; and
a second epitaxial pattern disposed on the second fin-type pattern,
wherein the first epitaxial pattern includes first and second epitaxial sidewalls which extend from the first and second sidewalls, respectively, of the first fin-type pattern,
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 first fin-type pattern,
wherein the first and second epitaxial connecting sidewalls extend perpendicular to a 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 the second epitaxial pattern includes third and fourth epitaxial sidewalls which extend from the third and fourth sidewalls, respectively, of the second fin-type pattern,
wherein the third epitaxial sidewall includes a third epitaxial lower sidewall and a third epitaxial upper sidewall which is directly connected to the third epitaxial lower sidewall,
wherein the fourth epitaxial sidewall includes a fourth epitaxial lower sidewall and a fourth epitaxial upper sidewall which is directly connected to the fourth epitaxial lower sidewall,
wherein the first to fourth epitaxial upper sidewalls and the third and fourth epitaxial lower sidewalls are formed by crystal planes included in a first crystal plane group, and
wherein the first and second epitaxial lower sidewalls are formed by crystal planes included in a second crystal plane group,
wherein the first crystal plane group is one of a {111} crystal plane group, a {110} crystal plane group, or a {100} crystal plane group, and
wherein the second crystal plane group is one of a {111} crystal plane group, a {110} crystal plane group, or a {100} crystal plane group, and is different from the first crystal plane group.