Patent ID: 11923459
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 15:
16. A transistor, comprising:
a word line disposed on a substrate;
a semiconductor layer disposed on the substrate, the semiconductor layer comprising a source region, a drain region, and a channel region disposed between the source and drain regions and overlapping with the word line in a vertical direction perpendicular to a plane of the substrate;
a hydrogen diffusion barrier film overlapping with the channel region in the vertical direction;
a gate dielectric layer disposed between the channel region and the word line;
a source electrode and a drain electrode electrically coupled to respective source regions and drain regions;
a first dielectric layer disposed between the semiconductor layer and the substrate;
a second dielectric layer disposed on the first dielectric layer, covering the semiconductor layer and the hydrogen diffusion barrier film, wherein,
the source region and the drain region directly contact the second dielectric layer; and
the channel region directly contacts the hydrogen diffusion barrier film.