NITRIDE SEMICONDUCTOR SUBSTRATE AND METHOD OF MANUFACTURING THE SAME
First Claim
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1. A method of forming a nitride semiconductor substrate, comprising:
- providing a substrate;
forming a epitaxy layer on the substrate;
forming a patterned mask layer on the epitaxy layer, wherein the patterned mask layer exposes a portion of the epitaxy layer;
performing an oxidation process to completely oxidize the exposed epitaxy layer so as to form a plurality of dislocation blocking structure;
removing the patterned mask layer; and
forming a nitride semiconductor layer on the epitaxy layer having the dislocation blocking structures.
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Abstract
The present invention relates to a method of forming a nitride semiconductor substrate. This method includes steps of providing a substrate and then forming an epitaxy layer on the substrate. A patterned mask layer is formed on the epitaxy layer, wherein the patterned mask layer exposes a portion of the epitaxy layer. Next, an oxidation process is performed to oxidize the exposed epitaxy layer so as to form a plurality of dislocation blocking structures. The patterned mask layer is then removed. Further, a nitride semiconductor layer is formed on the epitaxy layer having the dislocation blocking structures.
23 Citations
27 Claims
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1. A method of forming a nitride semiconductor substrate, comprising:
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providing a substrate; forming a epitaxy layer on the substrate; forming a patterned mask layer on the epitaxy layer, wherein the patterned mask layer exposes a portion of the epitaxy layer; performing an oxidation process to completely oxidize the exposed epitaxy layer so as to form a plurality of dislocation blocking structure; removing the patterned mask layer; and forming a nitride semiconductor layer on the epitaxy layer having the dislocation blocking structures. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method of manufacturing a nitride semiconductor substrate, comprising:
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providing a substrate having an epitaxy layer thereon; forming a patterned mask layer on the epitaxy layer, wherein the patterned mask layer exposes a portion of the epitaxy layer; performing an oxidation process to oxidize the exposed epitaxy layer so as to form a plurality of dislocation blocking structures, wherein the dislocation blocking structures are disposed in the epitaxy layer. removing the patterned mask layer; and forming a nitride semiconductor layer to cover the epitaxy layer. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21)
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22. A nitride semiconductor substrate, comprising:
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a substrate; a nitride semiconductor layer disposed over the substrate; a plurality of blocking structures disposed between the substrate and the nitride semiconductor layer; and an epitaxy layer filling between the blocking structures. - View Dependent Claims (23, 24, 25, 26, 27)
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Specification