Semiconductor light-emitting device and light-emitting device package having the same
First Claim
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1. A semiconductor light-emitting device comprising:
- a light-emitting structure that includes a plurality of compound semiconductor layers, at least one of the plurality of compound semiconductor layers including an active layer, and the light-emitting structure having a rounded side surface;
a first electrode unit on the light-emitting structure;
a second electrode layer under the light-emitting structure; and
a channel layer around a region between the second electrode layer and the light-emitting structure,wherein the channel layer has a top surface and a bottom surface, and a portion of the top surface of the channel layer has an exposed surface and an unexposed surface opposite to each other, the unexposed surface overlapping a portion of the active layer, andwherein a first thickness between the exposed surface and the bottom surface is substantially identical to a second thickness between the unexposed surface and the bottom surface.
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Abstract
Provided are a semiconductor light-emitting device and a light-emitting device package having the same. The semiconductor light-emitting device comprises a light-emitting structure, a first electrode unit, and a second electrode layer. The light-emitting structure comprises a plurality of compound semiconductor layers having a rounded side surface at an outer edge. The first electrode unit is disposed on the light-emitting structure. The second electrode layer is disposed under the light-emitting structure.
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Citations
20 Claims
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1. A semiconductor light-emitting device comprising:
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a light-emitting structure that includes a plurality of compound semiconductor layers, at least one of the plurality of compound semiconductor layers including an active layer, and the light-emitting structure having a rounded side surface; a first electrode unit on the light-emitting structure; a second electrode layer under the light-emitting structure; and a channel layer around a region between the second electrode layer and the light-emitting structure, wherein the channel layer has a top surface and a bottom surface, and a portion of the top surface of the channel layer has an exposed surface and an unexposed surface opposite to each other, the unexposed surface overlapping a portion of the active layer, and wherein a first thickness between the exposed surface and the bottom surface is substantially identical to a second thickness between the unexposed surface and the bottom surface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 17, 18, 19, 20)
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8. A semiconductor light-emitting device comprising:
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a cylindrical light-emitting structure that includes a plurality of compound semiconductor layers, at least one of the plurality of compound semiconductor layers including an active layer; a polygonal second electrode layer under the light-emitting structure; a channel layer around a region between the polygonal second electrode layer and the cylindrical light-emitting structure; a first electrode pad on the light-emitting structure; and a circular pattern disposed along a top edge of the light-emitting structure and being connected electrically to the first electrode pad, wherein the circular pattern has a rounded shape that is spaced apart by substantially a same first distance from a side surface of the cylindrical light-emitting structure, and the circular pattern having the rounded shape is spaced apart by a second distance from the first electrode pad, the second distance being greater than the first distance, and wherein the channel layer has a top surface and a bottom surface, and a portion of the top surface of the channel layer has an exposed surface and an unexposed surface opposite to each other, the unexposed surface overlapping a portion of the active layer, and wherein a first thickness between the exposed surface and the bottom surface is identical to a second thickness between the unexposed surface and the bottom surface. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A light-emitting device package comprising:
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a light-emitting device comprising; a cylindrical light-emitting structure that includes a first conductivity type semiconductor layer, an active layer and a second conductivity type semiconductor layer; a second electrode layer under the second conductivity type semiconductor layer; a channel layer around a region between the second electrode layer and the cylindrical light-emitting structure; and a first electrode unit on the first conductivity type semiconductor layer; a body unit having an opened cavity at a top of the body unit, and a plurality of lead electrodes disposed in the cavity of the body unit and connected electrically to the first electrode unit and the second electrode layer, wherein the channel layer has a top surface and a bottom surface, and a portion of the top surface of the channel layer has an exposed surface and an unexposed surface opposite to each other, the unexposed surface overlapping a portion of the active layer, and wherein a first thickness between the exposed surface and the bottom surface is substantially identical to a second thickness between the unexposed surface and the bottom surface. - View Dependent Claims (16)
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Specification