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

Claim 13:
14. An integrated circuit device comprising:
device isolation layers in a substrate and defining a plurality of active areas;
a plurality of first gate electrodes in a plurality of first trenches in the substrate and 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 and extending in the first direction,
wherein the plurality of first trenches alternate with the plurality of second trenches 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 trenches comprise first portions vertically overlapping the plurality of active areas and second portions vertically overlapping the device isolation layers,
the plurality of second trenches comprise third portions vertically overlapping the plurality of active areas and fourth portions vertically overlapping the device isolation layers,
bottom surfaces of the first portion are at the same level as bottom surfaces of the third portions, and
bottom surfaces of the second portions are at the same level as bottom surfaces of the fourth portions.