Patent ID: 11908863
Assignee: UNIST (ULSAN NATIONAL INSTITUTE OF SCIENCE AND TECHNOLOGY)
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 10:
11. A method of manufacturing a transistor device, the method comprising:
forming, on a substrate, a fin structure extending in a first direction;
forming a constant current generating layer at a lower portion of the fin structure;
forming, on the substrate, a gate electrode extending in a second direction that intersects the first direction;
forming a gate insulating film between the gate electrode and the fin structure; and
forming, on the fin structure, a source region and a drain region that are spaced apart from each other in the first direction,
wherein the constant current generating layer has a conductivity type identical to a conductivity type of the substrate,
the source region and the drain region are spaced apart from each other with the gate electrode therebetween, and
the forming of the constant current generating layer comprises:
forming a pair of impurity films on both sides of the lower portion of the fin structure, respectively; and
heat-treating the pair of impurity films.