Patent ID: 11888055
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 16:
17. A method of fabricating an electrical component device, comprising:
forming a layer of gallium nitride over a frontside of a substrate;
forming a layer of aluminum gallium nitride over the first layer, wherein a two-dimensional electron gas (2DEG) layer is produced at an interface between the first layer and the second layer;
forming a trench at a backside surface of the substrate through the substrate, through the first layer, and through the 2DEG layer, wherein the trench creates a gap in the 2DEG layer to produce a first 2DEG segment and a second 2DEG segment;
forming a dielectric material in the trench; and
disposing an electrical component over the second layer and over at least a portion of the gap.