Parasitic capacitance reduction in GaN-on-silicon devices
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United States of America
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Apr 1, 2025
Grant Date -
May 30, 2024
app pub date -
Feb 5, 2024
filing date -
Feb 5, 2024
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Abstract
Semiconductor structures with reduced parasitic capacitance between interconnects and ground, for example, are described. An example method for making a semiconductor structure includes forming a trench in an interconnect area of a substrate between first and second device areas in the semiconductor structure, forming a low dielectric constant material region in the trench, forming a III-nitride material layer over the substrate and over the low dielectric constant material region in the trench, forming a first device in the III-nitride material layer in the first device area, forming a second device in the III-nitride material layer in the second device area, and forming an interconnect over the low dielectric constant material region, the interconnect comprising a continuous conductive metal interconnect from the first device area, over the low dielectric constant material region, and to the second device area.
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