Patent ID: 11935790
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A field effect transistor comprising:
a substrate;
a source electrode on the substrate;
a drain electrode separated from the source electrode;
channels between the source electrode and the drain electrode, the channels being connected to the source electrode and the drain electrode,
the channels having a hollow closed cross-sectional structure when viewed in a first cross-section formed by a plane across the source electrode and the drain electrode in a direction perpendicular to the substrate, the channels each include a sheet portion extending parallel to an upper surface of the substrate and a contact portion extending in a direction perpendicular to the upper surface of the substrate;
gate insulating layers in the channels; and
a gate electrode insulated from the source electrode and the drain electrode by the gate insulating layers, wherein
each corresponding gate insulating layer on a corresponding channel, among the gate insulating layers on the channels, covers the sheet portion and the contact portion of the corresponding channel without being spaced apart from the sheet portion and the contact portion of the corresponding channel.