Patent ID: 11935943
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 17:
18. A semiconductor device comprising:
a substrate having a first region and a second region;
a first transistor on the first region of the substrate; and
a second transistor on the second region of the substrate,
wherein the first transistor includes:
a first active fin disposed in the first region of the substrate, and extending in a first direction;
a first gate electrode disposed in the first region of the substrate, and extending in a second direction to intersect the first active fin;
a first spacer having a first vertical portion on each of sidewalls of a first gate structure and a first horizontal portion extending from a lower end of the first vertical portion, and including a first concaved recess in a corner between the first vertical portion and the first horizontal portion;
a protective insulating layer disposed on a side surface of the first spacer, and having a portion filling the first concaved recess;
a first etch-stop layer disposed on the protective insulating layer; and
a first source and a first drain disposed in regions of the first active fin on opposite sides of the first gate structure,

wherein the second transistor includes:
a second active fin disposed in the second region of the substrate, and extending in the first direction;
a second gate electrode disposed in the second region of the substrate, and extending in the second direction;
a second spacer having a second vertical portion on each of sidewalls of a second gate structure and a second horizontal portion extending from a lower end of the second vertical portion, and including a second concaved recess in a corner between the second vertical portion and the second horizontal portion;
a second etch-stop layer directly disposed on a side surface of the second spacer that is directly disposed on the second gate structure, and having a portion filling the second concaved recess; and
a second source and a second drain disposed in regions of the second active fin on opposite sides of the second gate structure.