Light emitting device and light emitting device package having the same
First Claim
1. A semiconductor light emitting device comprising:
- a light emitting structure including a first conductive semiconductor layer, a second conductive semiconductor layer under the first conductive semiconductor layer, and an active layer between the first and second conductive semiconductor layers;
an electrode connected to the first conductive semiconductor layer;
a first conductive layer disposed under the second conductive semiconductor layer;
a second conductive layer disposed under the first conductive layer;
a protective layer disposed on an outer portion of a lower surface of the second conductive semiconductor layer and disposed outward further than the first conductive layer; and
a third conductive layer disposed under the second conductive layer and the protective layer;
a support member disposed under the third conductive layer; and
a buffer layer disposed between the protective layer and the third conductive layer and includes a metallic material,wherein the protective layer includes a first opening, a first portion contacted with the lower surface of the second conductive semiconductor layer, and a second portion disposed outwardly further than the first portion,wherein the first conductive layer is disposed in the first opening of the protective layer,wherein the second portion of the protective layer and the buffer layer is overlapped with the third conductive layer in a vertical direction, andwherein the buffer layer is disposed outwardly further than a lateral surface of the first conductive layer; and
wherein the protective layer has a thickness of 0.02 μ
m to 5 μ
m,wherein the buffer layer has a thickness thinner than a thickness of the protective layer or has a thickness in a range of 1 μ
m to 10 μ
m.
1 Assignment
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Accused Products
Abstract
Disclosed are a light emitting device. The light emitting device includes a light emitting structure including a first conductive semiconductor layer, a second conductive semiconductor layer, and an active layer, an electrode connected to the first conductive semiconductor layer. First to third conductive layers are disposed under the second conductive semiconductor layer. A protective layer is disposed outward further than the first conductive layer. A support member is disposed under the third conductive layer. A buffer layer is disposed between protective layer and the third conductive layer. The protective layer includes a first opening, a first portion, and a second portion. The second portion of the protective layer and the buffer layer is overlapped with the third conductive layer and is disposed outwardly further than a lateral surface of the first conductive layer.
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Citations
19 Claims
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1. A semiconductor light emitting device comprising:
- a light emitting structure including a first conductive semiconductor layer, a second conductive semiconductor layer under the first conductive semiconductor layer, and an active layer between the first and second conductive semiconductor layers;
an electrode connected to the first conductive semiconductor layer; a first conductive layer disposed under the second conductive semiconductor layer; a second conductive layer disposed under the first conductive layer; a protective layer disposed on an outer portion of a lower surface of the second conductive semiconductor layer and disposed outward further than the first conductive layer; and a third conductive layer disposed under the second conductive layer and the protective layer; a support member disposed under the third conductive layer; and a buffer layer disposed between the protective layer and the third conductive layer and includes a metallic material, wherein the protective layer includes a first opening, a first portion contacted with the lower surface of the second conductive semiconductor layer, and a second portion disposed outwardly further than the first portion, wherein the first conductive layer is disposed in the first opening of the protective layer, wherein the second portion of the protective layer and the buffer layer is overlapped with the third conductive layer in a vertical direction, and wherein the buffer layer is disposed outwardly further than a lateral surface of the first conductive layer; and wherein the protective layer has a thickness of 0.02 μ
m to 5 μ
m,wherein the buffer layer has a thickness thinner than a thickness of the protective layer or has a thickness in a range of 1 μ
m to 10 μ
m. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
- a light emitting structure including a first conductive semiconductor layer, a second conductive semiconductor layer under the first conductive semiconductor layer, and an active layer between the first and second conductive semiconductor layers;
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10. A semiconductor light emitting device comprising:
- a light emitting structure including a first conductive semiconductor layer, a second conductive semiconductor layer under the first conductive semiconductor layer, and an active layer between the first and second conductive semiconductor layers;
an electrode connected to the first conductive semiconductor layer; a first conductive layer disposed under the second conductive semiconductor layer; a second conductive layer disposed under the first conductive layer;
a protective layer disposed on an outer portion of a lower surface of the second conductive semiconductor layer and disposed outward further than the first conductive layer; anda third conductive layer disposed under the second conductive layer and the protective layer; a support member disposed under the third conductive layer; and a first buffer layer disposed between the protective layer and the third conductive layer, wherein the protective layer includes a first opening, a first portion contacted with the lower surface of the second conductive semiconductor layer, and a second portion disposed outwardly further than the first portion, wherein the first conductive layer is disposed in the first opening of the protective layer, wherein the second portion of the protective layer and the first buffer layer is overlapped with the third conductive layer in a vertical direction, and wherein the first buffer layer is disposed outwardly further than a lateral surfaces of the first and second conductive layers; and wherein the protective layer has a thickness of 0.02 μ
m to 5 μ
m,wherein the buffer layer has a thickness thinner than a thickness of the protective layer or has a thickness in a range of 1 μ
m to 10 μ
m. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
- a light emitting structure including a first conductive semiconductor layer, a second conductive semiconductor layer under the first conductive semiconductor layer, and an active layer between the first and second conductive semiconductor layers;
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18. A semiconductor light emitting device comprising:
- a light emitting structure including a first conductive semiconductor layer, a second conductive semiconductor layer under the first conductive semiconductor layer, and an active layer between the first and second conductive semiconductor layers;
an electrode connected to the first conductive semiconductor layer; a conductive layer contact a lower surface of the second conductive semiconductor layer; a reflective electrode layer disposed under the contact layer; a protective layer disposed on an outer portion of the lower surface of the second conductive semiconductor layer and disposed outward further than the first conductive layer; and a conductive adhesion layer disposed under the reflective electrode layer and the protective layer; a conductive support member disposed under the conductive adhesion layer; and a buffer layer disposed between the protective layer and the conductive adhesion layer, wherein the protective layer includes a first opening, a first portion contacted with the lower surface of the second conductive semiconductor layer, and a second portion disposed outwardly further than the first portion, wherein the conductive contact layer is disposed in the first opening of the protective layer, wherein the second portion of the protective layer and the buffer layer is overlapped with the conductive adhesion layer in a vertical direction, wherein the buffer layer is disposed outwardly further than a lateral surfaces of the conductive contact layer and the reflective electrode layer, and wherein the buffer layer includes a different material from the reflective electrode layer; and wherein the protective layer has a thickness of 0.02 μ
m to 5 μ
m,wherein the buffer layer has a thickness thinner than a thickness of the protective layer or has a thickness in a range of 1 μ
m to 10 μ
m. - View Dependent Claims (19)
- a light emitting structure including a first conductive semiconductor layer, a second conductive semiconductor layer under the first conductive semiconductor layer, and an active layer between the first and second conductive semiconductor layers;
Specification