SUBSTRATE, TEMPLATE SUBSTRATE, SEMICONDUCTOR LIGHT EMITTING ELEMENT, SEMICONDUCTOR LIGHT EMITTING ELEMENT PRODUCING METHOD, ILLUMINATION DEVICE USING SEMICONDUCTOR LIGHT EMITTING ELEMENT AND ELECTRONIC DEVICE
First Claim
1. A substrate for laminating a semiconductor layer thereon, wherein a plurality of protrusions in a hexagonal-pyramid shape is provided on a surface on which the semiconductor layer is laminated, and a side of a bottom surface of each of the plurality of protrusions is set in parallel with a side of a bottom surface of an adjacent protrusion.
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Accused Products
Abstract
Disclosed is a semiconductor light emitting element (LC) provided with a substrate (110) having one surface on which plural hexagonal-pyramid-shaped protrusions (110b) are provided, a base layer (130) provided so as to be in contact with the surface on which the protrusions (110b) are provided, an n-type semiconductor layer (140) provided so as to be in contact with the base layer (130), a light emitting layer (150) provided so as to be in contact with the n-type semiconductor layer (140), and a p-type semiconductor layer (160) provided so as to be in contact with the light emitting layer (150). Each protrusion (110b) scatters light in lateral and oblique directions within the semiconductor light emitting element (LC). The protrusions are densely arranged on a substrate on which semiconductor layers are laminated, so that the light extraction efficiency is improved.
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Citations
12 Claims
- 1. A substrate for laminating a semiconductor layer thereon, wherein a plurality of protrusions in a hexagonal-pyramid shape is provided on a surface on which the semiconductor layer is laminated, and a side of a bottom surface of each of the plurality of protrusions is set in parallel with a side of a bottom surface of an adjacent protrusion.
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6. A template substrate comprising:
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a substrate on one surface of which a plurality of protrusions in a hexagonal-pyramid shape is provided, a side of a bottom surface of each of the plurality of protrusions being set in parallel with a side of a bottom surface of an adjacent protrusion; and a group III-V compound semiconductor that is epitaxially grown on the one surface of the substrate. - View Dependent Claims (7)
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8. A semiconductor light emitting element comprising:
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a substrate on one surface of which a plurality of protrusions in a hexagonal-pyramid shape is provided, and a side of a bottom surface of each of the plurality of protrusions is set in parallel with a side of a bottom surface of an adjacent protrusion; and a laminated semiconductor layer that is provided on the substrate and includes a light emitting layer to emit light of a predetermined wavelength.
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9. A semiconductor light emitting element producing method comprising:
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a substrate processing step in which a plurality of protrusions in a hexagonal-pyramid shape is provided on one surface of a substrate so that bottom surfaces thereof are adjacent so that facing sides become parallel; and a laminated semiconductor layer forming step in which a laminated semiconductor layer including a light emitting layer to emit light of a predetermined wavelength is formed on the substrate. - View Dependent Claims (10)
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11. An illumination device comprising a semiconductor light emitting element, the semiconductor light emitting element including:
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a substrate on one surface of which a plurality of protrusions in a hexagonal-pyramid shape is provided, a side of a bottom surface of each of the plurality of protrusions being set in parallel with a side of a bottom surface of an adjacent protrusion; and a laminated semiconductor layer that is provided on the substrate and includes a light emitting layer to emit light of a predetermined wavelength.
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12. An electronic device comprising a semiconductor light emitting element, the semiconductor light emitting element including:
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a substrate on one surface of which a plurality of protrusions in a hexagonal-pyramid shape is provided, a side of a bottom surface of each of the plurality of protrusions being set in parallel with a side of a bottom surface of an adjacent protrusion; and a laminated semiconductor layer that is provided on the substrate and includes a light emitting layer to emit light of a predetermined wavelength.
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Specification