Light emitting device, light emitting device package, and lighting system
AssigneeLG Innotek Co., Ltd.
InventorsJong Hak Won, Sun Kyung Kim, Kyoung Woo Jo, Joong Seo Park
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Abstract
Provided are a light emitting device, a light emitting device package, and a lighting system. The light emitting device includes a substrate, a light emitting structure comprising a first conductive type semiconductor layer, an active layer, and a second conductive type semiconductor layer, the light emitting structure being disposed on the substrate, a nonmetal pattern disposed between the substrate and the active layer, the nonmetal pattern being spaced from the substrate, and an air gap disposed on a side surface of the nonmetal pattern.
Claims20
A light emitting device, comprising:
- a substrate;
- a light emitting structure comprising a first conductive type semiconductor layer, an active layer, and a second conductive type semiconductor layer, the light emitting structure being disposed on the substrate;
- a nonmetal pattern disposed between the substrate and the active layer, the nonmetal pattern being spaced from the substrate;
- and
- an air gap disposed along a peripheral side edge portion of the nonmetal pattern extending between top and bottom surfaces thereof, wherein the nonmetal pattern and the air gap are arranged substantially parallel to a top surface of the substrate.
A light emitting device, comprising:
- a light emitting structure comprising a first conductive type semiconductor layer, an active layer, and a second conductive type semiconductor layer;
- a nonmetal pattern having a top surface, a bottom surface, and a side surface, and disposed in the light emitting structure;
- and
- an air gap disposed near the nonmetal pattern,
- wherein the air gap surrounds a side peripheral surface of the nonmetal pattern extending between top and bottom surfaces thereof, and
- wherein a refractive index of the nonmetal pattern is different from a refractive index of the first conductive type semiconductor layer.
A light emitting device, comprising:
- a substrate;
- a light emitting structure comprising an n type conductive type semiconductor layer, an active layer, and a p-type conductive type semiconductor layer, the light emitting structure being disposed on the substrate;
- a plurality of nonmetal patterns disposed between the substrate and the active layer, the plurality of nonmetal patterns being spaced from the substrate;
- and
- an air gap disposed between the plurality of nonmetal patterns,
- wherein the air gap is disposed on two opposite side surfaces of at least one of the plurality of nonmetal patterns, and
- wherein a refractive index of the plurality of nonmetal patterns is different from a refractive index of the n-type conductive type semiconductor layer.
Dependencies are inferred from the claim text.