Light emitting device, light emitting device package and lighting system including the same
First Claim
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1. A light emitting device (LED) comprising:
- a first semiconductor layer,an active layer adjacent to the first semiconductor layer,a second semiconductor layer adjacent to the active layer, the first semiconductor layer being a first conductivity type and the second semiconductor layer being a second conductivity type; and
a third semiconductor layer adjacent to the first semiconductor layer such that the first semiconductor layer is between the third semiconductor layer and the active layer, wherein the third semiconductor layer having at least one side surface that is inclined, wherein the third semiconductor layer being the first conductive type,wherein the third semiconductor layer of the first conductive type is a GaN type semiconductor layer and the first semiconductor layer of the first conductive type is a GaN type semiconductor layer, andwherein the third semiconductor layer of the first conductive type physically contacts the first semiconductor layer of the first conductive type.
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Abstract
Provided are a light emitting device, a light emitting device package and a lighting system including the same. The light emitting device (LED) comprises a light emitting structure comprising a second conductive type semiconductor layer, an active layer, and a first conductive type semiconductor layer and a first electrode over the light emitting structure. A portion of the light emitting structure is sloped at a predetermined angle.
11 Citations
19 Claims
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1. A light emitting device (LED) comprising:
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a first semiconductor layer, an active layer adjacent to the first semiconductor layer, a second semiconductor layer adjacent to the active layer, the first semiconductor layer being a first conductivity type and the second semiconductor layer being a second conductivity type; and a third semiconductor layer adjacent to the first semiconductor layer such that the first semiconductor layer is between the third semiconductor layer and the active layer, wherein the third semiconductor layer having at least one side surface that is inclined, wherein the third semiconductor layer being the first conductive type, wherein the third semiconductor layer of the first conductive type is a GaN type semiconductor layer and the first semiconductor layer of the first conductive type is a GaN type semiconductor layer, and wherein the third semiconductor layer of the first conductive type physically contacts the first semiconductor layer of the first conductive type. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A light emitting device (LED) comprising:
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a first semiconductor layer; an active layer under the first semiconductor layer; a second semiconductor layer under the active layer such that the active layer is between the first semiconductor layer and the second semiconductor layer, the first semiconductor layer being a first conductivity type and the second semiconductor layer being a second conductivity type; and a third semiconductor layer on the first semiconductor layer such that the first semiconductor layer is between the active layer and the third semiconductor layer, wherein the third semiconductor layer has at least one inclined side surface, and a recess is provided in the third semiconductor layer, wherein the third semiconductor layer being the first conductive type, wherein the third semiconductor layer is a GaN type semiconductor layer, and the first semiconductor layer is a GaN type semiconductor layer, wherein the third semiconductor layer of the first conductive type is directly disposed on the first semiconductor layer of the first conductive type. - View Dependent Claims (18, 19)
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Specification