Light emitting device having light extraction structure and method for manufacturing the same
First Claim
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1. A light emitting device comprising:
- a semiconductor structure having multiple layers, the semiconductor structure having a first surface and a second surface;
a light extraction layer comprising at least two light extraction structures on the first surface of the semiconductor structure, the light extraction structures having different distributions of unit structures; and
a reflective structure on the second surface of the semiconductor structure, the reflective structure comprising an ohmic contact layer.
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Abstract
A nitride-based light emitting device capable of achieving an enhancement in emission efficiency and an enhancement in reliability is disclosed. The light emitting device includes a semiconductor layer, and a light extracting layer arranged on the semiconductor layer and made of a material having a refractive index equal to or higher than a reflective index of the semiconductor layer.
107 Citations
31 Claims
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1. A light emitting device comprising:
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a semiconductor structure having multiple layers, the semiconductor structure having a first surface and a second surface; a light extraction layer comprising at least two light extraction structures on the first surface of the semiconductor structure, the light extraction structures having different distributions of unit structures; and a reflective structure on the second surface of the semiconductor structure, the reflective structure comprising an ohmic contact layer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A light emitting device comprising:
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a semiconductor structure having multiple layers; and a light extraction layer on the semiconductor structure, the light extraction layer comprising a first light extraction structure having a periodic distribution of unit structures and a second light extraction structure having a random distribution of unit structures. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30, 31)
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Specification