Light emitting device, light emitting device package and lighting system
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United States of America Patent
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Jun 25, 2013
Grant Date -
Jun 21, 2012
app pub date -
Dec 7, 2011
filing date -
Dec 20, 2010
priority date (Note) -
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Abstract
Disclosed is a light emitting device, including: a substrate, a light emitting structure provided on the substrate, which includes a first conductive semiconductor layer, an active layer and a second conductive semiconductor layer laminated in sequential order, a transmissive electrode layer arranged on the light emitting structure, an electrode provided on the light emitting structure. Here, the electrode includes a pad electrode and a finger electrode, and an insertion element is placed between the finger electrode and the second conductive semiconductor layer, wherein the insertion element is formed such that at least one region thereof overlaps with the finger electrode in a vertical direction. Since the insertion element is formed under the finger electrode, it is possible to prevent light emitted by the active layer from being absorbed by the finger electrode. Accordingly, luminous efficacy of the light emitting device may be further enhanced.
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