Light emitting device, light emitting system having the same, and fabricating method of the light emitting device and the light emitting system
First Claim
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1. A light emitting device comprising:
- a first light emitting structure which includes a first semiconductor pattern of a first conductivity type, a second semiconductor pattern of a second conductive type, and a first active pattern, wherein the first light emitting structure is turned on or turned off according to a bias applied to the first semiconductor pattern and the second semiconductor pattern;
a first electrode having an inclined sidewall and a bottom, wherein an upper surface of the first electrode allows light generated from the first active pattern to escape from the first light emitting structure;
an insulating pattern formed between the first electrode and the first light emitting structure, wherein the insulating pattern includes an oxide film, a nitride film, an oxynitride film, Al2O3, or AlN;
an intermediate material layer formed between the first electrode and a substrate, wherein the intermediate material layer includes Au, Ag, Pt, Ni, Cu, Sn, Al, Pb, Cr or Ti; and
a barrier layer which is formed between the first electrode and the intermediate material layer, and includes at least one of a single layer, a laminate, and a combination thereof including Pt, Ni, Cu, Al, Cr, Ti or W,wherein at least one of the first semiconductor pattern, the second semiconductor pattern, and the first active pattern includes InxAlyGa(1-x-y)N, 0≦
x≦
1, 0≦
y≦
1, and the first electrode connected to the first semiconductor pattern of the first conductive type has a bowl shape and an inclined sidewall.
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Abstract
A semiconductor device includes a first light emitting chip, the first light emitting chip having a first semiconductor layer, a second semiconductor layer, and a first active layer disposed therebetween, a second light emitting chip disposed on the first light emitting chip, the second light emitting chip having a third semiconductor layer, a fourth semiconductor layer, and a second active layer disposed therebetween, and a conductive layer disposed between the first semiconductor layer and the fourth semiconductor layer, the first semiconductor layer and the fourth semiconductor layer having different conductivity types.
436 Citations
13 Claims
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1. A light emitting device comprising:
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a first light emitting structure which includes a first semiconductor pattern of a first conductivity type, a second semiconductor pattern of a second conductive type, and a first active pattern, wherein the first light emitting structure is turned on or turned off according to a bias applied to the first semiconductor pattern and the second semiconductor pattern; a first electrode having an inclined sidewall and a bottom, wherein an upper surface of the first electrode allows light generated from the first active pattern to escape from the first light emitting structure; an insulating pattern formed between the first electrode and the first light emitting structure, wherein the insulating pattern includes an oxide film, a nitride film, an oxynitride film, Al2O3, or AlN; an intermediate material layer formed between the first electrode and a substrate, wherein the intermediate material layer includes Au, Ag, Pt, Ni, Cu, Sn, Al, Pb, Cr or Ti; and a barrier layer which is formed between the first electrode and the intermediate material layer, and includes at least one of a single layer, a laminate, and a combination thereof including Pt, Ni, Cu, Al, Cr, Ti or W, wherein at least one of the first semiconductor pattern, the second semiconductor pattern, and the first active pattern includes InxAlyGa(1-x-y)N, 0≦
x≦
1, 0≦
y≦
1, and the first electrode connected to the first semiconductor pattern of the first conductive type has a bowl shape and an inclined sidewall. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification