Patent ID: 11963344
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 7:
8. An integrated circuit device comprising:
a plurality of first gate electrodes in a plurality of first trenches in a substrate, the plurality of first gate electrodes extending in a first direction parallel to a top surface of the substrate; and
a plurality of second gate electrodes in a plurality of second trenches in the substrate, the plurality of second gate electrodes extending in the first direction,
wherein the plurality of first gate electrodes alternate with the plurality of second gate electrodes in a second direction, the second direction parallel to the top surface of the substrate and perpendicular to the first direction, and, in a plan view, a first end portion of each of the plurality of first gate electrodes protrudes outwards in the first direction with respect to a second end portion of each of the plurality of second gate electrodes,
wherein the plurality of first gate electrodes include,
first work function control conductive layers on inner walls of the plurality of first trenches, and
first buried conductive layers on the first work function control conductive layers, and

the plurality of second gate electrodes include,
second work function control conductive layers on inner walls of the plurality of second trenches; and
second buried conductive layers on the second work function control conductive layers.