Patent ID: 11894376
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 15:
16. A method of fabricating an integrated circuit device, the method comprising:
forming a fin-type active region on the substrate;
forming a plurality of source/drain regions on the fin-type active region;
forming an insulating structure on the fin-type active region and the plurality of source/drain regions, the insulating structure defining a first gate space and a second gate space adjacent the first gate space;
forming a gate stack structure in the first gate space, the gate stack structure comprising a first metal nitride layer having a first thickness, and a first Al-containing layer having a first Al content; and
forming an isolation stack structure in the second gate space, the isolation stack structure comprising a second metal nitride layer having a second thickness greater than the first thickness, and a second Al-containing layer having a second Al content.