GaN device with floating field plates
First Claim
Patent Images
1. A semiconductor device comprising:
- a substrate including a transition layer that can form a two-dimensional electron gas;
a source electrode ohmically coupled to the transition layer;
a drain electrode ohmically coupled to the transition layer;
a gate stack formed on the transition layer; and
a field termination structure spaced apart from the transition layer and positioned between the gate stack and the drain electrode, wherein the field termination structure includes a source plate electrically connected to the source electrode and at least one capacitively coupled floating plate.
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Abstract
A lateral transistor includes a source a gate and a drain connection to a transition layer within a semiconductor substrate. One or more capacitively coupled floating field plates are connected to the source connection such that the source voltage is uniformly distributed across the field plates.
9 Citations
20 Claims
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1. A semiconductor device comprising:
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a substrate including a transition layer that can form a two-dimensional electron gas; a source electrode ohmically coupled to the transition layer; a drain electrode ohmically coupled to the transition layer; a gate stack formed on the transition layer; and a field termination structure spaced apart from the transition layer and positioned between the gate stack and the drain electrode, wherein the field termination structure includes a source plate electrically connected to the source electrode and at least one capacitively coupled floating plate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A transistor comprising:
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a substrate comprising a semiconductor material; a source electrode coupled to the substrate; a drain electrode coupled to the substrate; a gate stack formed on the substrate; and a field termination structure positioned between the gate stack and the drain electrode, wherein the field termination structure includes a source plate electrically connected to the source electrode and at least one capacitively coupled isolated plate. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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18. A semiconductor device comprising:
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a substrate including a semiconducting layer; an ohmic metal layer formed on the substrate and including a source portion and a drain portion; a gate stack formed on the substrate; a metal layer formed above and separated from the ohmic metal layer and including a source plate, a drain plate and a plurality of electrically isolated plates; and a top metal layer formed above and separated from the metal layer and including a gate terminal, a source terminal and a drain terminal, wherein the gate terminal is electrically connected to the gate stack, the source terminal is electrically connected to the source plate, and the drain terminal is electrically connected to the drain plate. - View Dependent Claims (19, 20)
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Specification