Group-III nitride compound semiconductor light emitting element, manufacturing method therefor and semiconductor light emitting device
First Claim
1. A group-III nitride compound semiconductor light emitting element comprising:
- a substrate that has a main face on which a concave and convex portion is formed;
a group-III nitride compound semiconductor layer that is formed on the main face of the substrate; and
a clearance that is formed between the substrate and the group-III nitride compound semiconductor layer at a first region of the semiconductor light emitting element,wherein, in the first region, a portion of the group-III nitride compound semiconductor layer and a portion of the clearance are disposed in a concave of the concave and convex portion on a section through two adjacent top portions of the concave and convex portion and a bottom portion located between the adjacent top portions,wherein, in the first region, the group-III nitride compound semiconductor layer includes a concave portion that is concave away from the substrate,wherein an apex of a convex of the concave and convex portion is centrally aligned with a vertex of the concave portion of the group-III nitride compound semiconductor layer, andwherein the apex of the convex of the concave and convex portion of the substrate is shifted in a direction perpendicular to a stacking direction of the substrate and the semiconductor layer from a positon where the apex of the convex of the concave and convex portion is aligned with an apex of the group-III nitride compound semiconductor layer in the stacking direction.
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Abstract
A group-III nitride compound semiconductor light emitting element includes a substrate that has a main face on which an concave and convex portion is formed, a group-III nitride compound semiconductor layer that is formed on the main face of the substrate, and a clearance that is formed between the substrate and the group-III nitride compound semiconductor layer at a first region of the semiconductor light emitting element. In the first region, a portion of the group-III nitride compound semiconductor layer and a portion of the clearance are disposed in a concave of the concave and convex portion on a section through two adjacent top portions of the concave and convex portion and a bottom portion located between the adjacent top portions.
18 Citations
16 Claims
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1. A group-III nitride compound semiconductor light emitting element comprising:
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a substrate that has a main face on which a concave and convex portion is formed; a group-III nitride compound semiconductor layer that is formed on the main face of the substrate; and a clearance that is formed between the substrate and the group-III nitride compound semiconductor layer at a first region of the semiconductor light emitting element, wherein, in the first region, a portion of the group-III nitride compound semiconductor layer and a portion of the clearance are disposed in a concave of the concave and convex portion on a section through two adjacent top portions of the concave and convex portion and a bottom portion located between the adjacent top portions, wherein, in the first region, the group-III nitride compound semiconductor layer includes a concave portion that is concave away from the substrate, wherein an apex of a convex of the concave and convex portion is centrally aligned with a vertex of the concave portion of the group-III nitride compound semiconductor layer, and wherein the apex of the convex of the concave and convex portion of the substrate is shifted in a direction perpendicular to a stacking direction of the substrate and the semiconductor layer from a positon where the apex of the convex of the concave and convex portion is aligned with an apex of the group-III nitride compound semiconductor layer in the stacking direction. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A group-HI nitride compound semiconductor light emitting element comprising:
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a substrate that has a main face on which an concave and convex portion is formed; a group-III nitride compound semiconductor layer that is formed on the main face of the substrate; and a clearance that is formed between the substrate and the group-III nitride compound semiconductor layer at a first region of the semiconductor light emitting element, wherein, in the first region, a portion of the group-III nitride compound semiconductor layer and a portion of the clearance are disposed in a concave of the concave and convex portion on a section through two adjacent top portions of the concave and convex portion and a bottom portion located between the adjacent top portions, wherein the concave and convex portion of the substrate includes a slant surface that is in a range of 40°
or more but 80°
or less to the main surface of the substrate, andwherein an apex of a convex of the concave and convex portion of the substrate is shifted in a direction perpendicular to a stacking direction of the substrate and the semiconductor layer from a positon where the apex of the convex of the concave and convex portion is centrally aligned with an apex of the group-III nitride compound semiconductor layer in the stacking direction. - View Dependent Claims (16)
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Specification