SEMICONDUCTOR LIGHT EMITTING DEVICE
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United States of America Patent
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Jan 5, 2017
app pub date -
Apr 26, 2016
filing date -
Jul 3, 2015
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Abstract
A semiconductor light emitting device may include a substrate having a first surface and a second surface, the second surface being opposite to the first surface; a light emitting structure disposed on the first surface of the substrate and including a first conductivity-type semiconductor layer, an active layer and a second conductivity-type semiconductor layer; and a reflector disposed on the second surface of the substrate and including a low refractive index layer and a Bragg layer, wherein the Bragg layer includes a plurality of alternately stacked layers having different refractive indices, and wherein a refractive index of the low refractive index layer is lower than a refractive index of the Bragg layer.
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