Patent ID: 11862632
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 9:
10. A semiconductor device, comprising:
a first gate electrode structure disposed in a first region of a substrate and including a first gate insulating layer and a first gate electrode disposed on the first gate insulating layer;
a first spacer in contact with the first gate electrode, disposed on side walls of the first gate electrode;
a second gate electrode structure disposed in a second region of the substrate and including a second gate insulating layer and a second gate electrode disposed on the second gate insulating layer;
a second spacer in contact with the second gate electrode, disposed on side walls of the second gate electrode;
wherein the first gate insulating layer includes a same material as the second gate insulating layer,
wherein a height from an upper face of the first gate insulating layer to a lowermost part of the first spacer is greater than a height from an upper face of the second gate insulating layer to a lowermost part of the second spacer,
wherein the first gate electrode includes a lower part of the first gate electrode, and an upper part of the first gate electrode disposed on the lower part of the first gate electrode, and
wherein a width of the lower part of the first gate electrode is equal to a width of the upper part of the first gate electrode at a lowermost part of the first spacer.