Gallium nitride layer with diamond layers
First Claim
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1. A device, comprising:
- a gallium nitride (GaN) layer;
a first layer of diamond having a first thermal conductivity disposed on the GaN layer; and
a second layer of diamond having a second thermal conductivity greater than the first thermal conductivity deposited on the first layer of diamond,wherein the second diamond layer is about 2 mils or greater and the first diamond layer is less than about 1 mil.
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Abstract
In one aspect, a method includes fabricating a gallium nitride (GaN) layer with a first diamond layer having a first thermal conductivity and a second diamond layer having a second thermal conductivity greater than the first thermal conductivity. The fabricating includes using a microwave plasma chemical vapor deposition (CVD) process to deposit the second diamond layer onto the first diamond layer.
28 Citations
20 Claims
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1. A device, comprising:
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a gallium nitride (GaN) layer; a first layer of diamond having a first thermal conductivity disposed on the GaN layer; and a second layer of diamond having a second thermal conductivity greater than the first thermal conductivity deposited on the first layer of diamond, wherein the second diamond layer is about 2 mils or greater and the first diamond layer is less than about 1 mil. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A device, comprising:
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a gallium nitride (GaN) layer; a first layer of diamond having a first thermal conductivity disposed on the GaN layer; and a second layer of diamond having a second thermal conductivity greater than the first thermal conductivity deposited on the first layer of diamond, wherein the second diamond layer about 4 mils or greater and the first diamond layer is less than about 1 mil. - View Dependent Claims (9, 10, 11, 12, 13)
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14. A device, comprising:
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a gallium nitride (GaN) layer; a first layer of diamond having a first thermal conductivity disposed on the GaN layer; and a second layer of diamond having a second thermal conductivity greater than the first thermal conductivity deposited on the first layer of diamond, wherein the first layer of diamond is disposed on a first surface of the GaN layer, the GaN layer further comprising a third diamond layer disposed on a second surface of the GaN layer opposite the first surface of the GaN layer. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification