A semiconductor light emitting device includes a light emitting structure including a first conductivity-type semiconductor layer, an active layer, and a second conductivity-type semiconductor layer; and an insulating layer on the light emitting structure and including first and second through-holes
A semiconductor light emitting device includes a light emitting structure including a first conductivity-type semiconductor layer, an active layer, and a second conductivity-type semiconductor layer; and an insulating layer on the light emitting structure and including first and second through-holes. The insulating layer includes a first lower insulating layer and a second lower insulating layer. The first insulating layer is disposed on the first conductivity-type semiconductor layer and is surrounded by the second lower insulating layer with the first through-hole interposed therebetween.
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1. A semiconductor light emitting device, comprising: a light emitting structure including a first conductivity-type semiconductor layer, an active layer, and a second conductivity-type semiconductor layer stacked in a stacking direction;a lower insulating layer on the light emitting structure and i
1. A semiconductor light emitting device, comprising: a light emitting structure including a first conductivity-type semiconductor layer, an active layer, and a second conductivity-type semiconductor layer stacked in a stacking direction;a lower insulating layer on the light emitting structure and including a first through-hole on the first conductivity-type semiconductor layer and a second through-hole on the second conductivity-type semiconductor layer;a connection layer on the lower insulating layer, and electrically connected to the first conductivity-type semiconductor layer and the second conductivity-type semiconductor layer through the first and second through-holes, respectively; andan upper insulating layer on the connection layer and including a third through-hole and a fourth through-hole that partially expose the connection layer,wherein the lower insulating layer includes a first lower insulating layer and a second lower insulating layer partitioned by the first through-hole, and the first lower insulating layer is on the first conductivity-type semiconductor layer and is surrounded by the second lower insulating layer with the first through-hole interposed between the first and second lower insulating layers. 2. The semiconductor light emitting device as claimed in claim 1, wherein: the light emitting structure includes a first region including the second conductivity-type semiconductor layer, the active layer, and the first conductivity-type semiconductor layer, and a second region, between adjacent first regions along a second direction orthogonal to the stacking direction, that exposes the first conductivity-type semiconductor layer, wherein the first lower insulating layer is located on a bottom of the second region. 3. The semiconductor light emitting device as claimed in claim 1, wherein the lower insulating layer has a refractive index lower than a refractive index of the light emitting structure. 4. The semiconductor light emitting device as claimed in claim 1, wherein the first through-hole has a continuous ring-shaped structure, and penetrates through the lower insulating layer to expose the first conductivity-type semiconductor layer. 5. The semiconductor light emitting device as claimed in claim 1, wherein the first through-hole has a structure in which a plurality of through-holes are arranged in a ring shape, and penetrates the lower insulating layer to be extended to the first conductivity-type semiconductor layer. 6. The semiconductor light emitting device as claimed in claim 1, further comprising a passivation layer between the lower insulating layer and the light emitting structure, wherein the first through-hole penetrates through the lower insulating layer and the passivation layer, to expose to the first conductivity-type semiconductor layer. 7. The semiconductor light emitting device as claimed in claim 1, further comprising a first contact electrode in the first through-hole to be connected to the first conductivity-type semiconductor layer, and a second contact electrode on the second conductivity-type semiconductor layer to be connected to the second conductivity-type semiconductor layer. 8. The semiconductor light emitting device as claimed in claim 1, further comprising a first electrode pad and a second electrode pad on the connection layer in the third and fourth through-holes. 9. A semiconductor light emitting device, comprising: a light emitting structure including first regions having a first conductivity-type semiconductor layer, an active layer, and a second conductivity-type semiconductor layer stacked on a substrate in a stacking direction, and second regions that expose the first conductivity-type semiconductor layer, adjacent first regions being spaced apart along a second direction, orthogonal to the stacking direction, by a second region; andan insulating layer on the light emitting structure and including a first through-hole overlapping the first conductivity-type semiconductor layer in the stacking direction in the second region to expose the first conductivity-type semiconductor layer and a second through-hole overlapping the second conductivity-type semiconductor layer in the stacking direction in the first region, wherein the first through-hole surrounds a central region in the first region having the insulating layer therein. 10. The semiconductor light emitting device as claimed in claim 9, wherein: the central region includes a third region having the first conductivity-type semiconductor layer, the active layer, and the second conductivity-type semiconductor layer stacked on the substrate in the stacking direction, andthe first through-hole surrounds the third region such that the first conductivity-type semiconductor layer is exposed on opposite sides of the third region along the second direction. 11. The semiconductor light emitting device as claimed in claim 10, wherein the first through-hole extends along a circumference of the central region. 12. The semiconductor light emitting device as claimed in claim 9, wherein a height of the first conductivity-type semiconductor layer along the stacking direction where the first through-hole is located is higher than in the second region. 13. The semiconductor light emitting device as claimed in claim 9, further comprising a first contact electrode in the first through-hole to be connected to the first conductivity-type semiconductor layer, and a second contact electrode on the second conductivity-type semiconductor layer to be connected to the second conductivity-type semiconductor layer. 14. The semiconductor light emitting device as claimed in claim 9, further comprising a passivation layer between the insulating layer and the light emitting structure. 15. The semiconductor light emitting device as claimed in claim 9, wherein the substrate includes a plurality of concave-convex portions on a surface thereof. 16. A semiconductor light emitting device, comprising: a light emitting structure including first regions having a first conductivity-type semiconductor layer, an active layer, and a second conductivity-type semiconductor layer stacked on a substrate in a stacking direction, and second regions that expose the first conductivity-type semiconductor layer, adjacent first regions being spaced apart along a second direction, orthogonal to the stacking direction, by a second region; andan insulating layer on the light emitting structure and including a first through-hole overlapping the first conductivity-type semiconductor layer in the stacking direction in the second region to expose the first conductivity type semiconductor layer and a second through-hole overlapping the second conductivity-type semiconductor layer in the stacking direction in the first region, wherein the first through-hole surrounds an insulating region having the insulating layer therein within the second region. 17. The semiconductor light emitting device as claimed in claim 16, wherein the first through-hole continuously surrounds the insulating region. 18. The semiconductor light emitting device as claimed in claim 16, wherein the first through-hole discontinuously surrounds the insulating region. 19. The semiconductor light emitting device as claimed in claim 16, wherein: the insulating region includes a third region having the first conductivity-type semiconductor layer, the active layer, and the second conductivity-type semiconductor layer stacked on the substrate in the stacking direction, andthe first through-hole surrounds the third region such that the first conductivity-type semiconductor layer is exposed on opposite sides of the third region along the second direction. 20. The semiconductor light emitting device as claimed in claim 16, wherein a height of the first conductivity-type semiconductor layer along the stacking direction in the first region is higher than in the second region.
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