Light emitting device and light emitting device package
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United States of America
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Jan 7, 2020
Grant Date -
Mar 22, 2018
app pub date -
Nov 29, 2017
filing date -
Nov 29, 2017
priority date (Note) -
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status (Latency Note)
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Abstract
A light emitting device includes a light emitting layer, a substrate that is transparent to an emission wavelength of the light emitting layer and positioned to receive an emission wavelength from the light emitting layer, a convex pattern including a collection of a plurality of convex portions discretely arranged on a front surface of the substrate with a first pitch, an n type nitride semiconductor layer located on the front surface of the substrate to cover the convex pattern and a p type nitride semiconductor layer located on the light emitting layer. The light emitting layer is located on the n type semiconductor layer. Each of the convex portions includes a sub convex pattern comprising a plurality of fine convex portions discretely formed at the top of the convex portion with a second pitch smaller than the first pitch, and a base supporting the sub convex pattern.
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