Light emitting device and product including same
This light emitting device comprises: a substrate; a light emitting laminate disposed on the substrate; first and second electrodes provided on the light emitting laminate; first and second bumps provided on the first and second electrodes, respectively; a passivation film which is provided on the substrate, exposes portions of the upper surfaces of the first and second bumps, and covers the laminate; and a light conversion layer covering the rear surface of the substrate, a side surface of the substrate, and a side surface of the passivation film.
1 . A light emitting apparatus, comprising:
a substrate including a first region and a second region;
a light emitter disposed on the first region of the substrate;
first and second electrodes provided on the light emitter;
first and second bumps provided on the first and second electrodes, respectively;
a first passivation material provided on an upper surface of the second region of the substrate;
a first insulation layer provided between the light emitter and the first passivation material, wherein the first passivation material includes a material different from that of the first insulation layer;
a second passivation material disposed on the first passivation material and including white material that blocks or reflects light emitted from the light emitter; and
a second insulation layer provided between the first insulation layer and the first passivation material and having first and second through holes exposing portions of upper surfaces of the first and second electrodes,
wherein a side surface of the second passivation material is positioned on a same plane as a side surface of the first passivation material, and
wherein the first and second bumps cover portions of the first and second electrodes around the first and second through holes, respectively.
2 . The light emitting apparatus of claim 1 ,
wherein the first insulation layer is disposed between the light emitter and the first electrode, and between the light emitter and the second electrode, and extends outward from a side surface of the light emitter and covers a portion of the upper surface of the second region of the substrate.
3 . The light emitting apparatus of claim 1 ,
wherein the second insulation layer extends outward from the side surface of the light emitter, and covers an end portion of the first insulation layer and a portion of the upper surface of the second region of the substrate.
4 . The light emitting apparatus of claim 1 ,
wherein the first passivation material covers an end portion of the second insulation layer positioned on the substrate.
5 . The light emitting apparatus of claim 4 ,
wherein a distance between the end portion of the second insulation layer positioned on the substrate and the side surface of the first passivation material is 10 micrometers or more.
6 . The light emitting apparatus of claim 1 ,
wherein the first and second bumps have side surfaces inclined with respect to upper surfaces of the first and second electrodes.
7 . The light emitting apparatus of claim 1 ,
wherein upper surfaces of the first and second bumps are positioned on a same plane as an upper surface of the first passivation material.
8 . The light emitting apparatus of claim 1 ,
wherein upper surfaces of the first and second bumps are provided at positions that are recessed from an upper surface of the first passivation material toward the light emitter.
9 . The light emitting apparatus of claim 1 ,
wherein the first passivation material includes a transparent moisture resistant material.
10 . The light emitting apparatus of claim 1 , further comprising:
a light conversion layer including a phosphor that is configured to convert at least a portion of light emitted from the light emitter into light of a different wavelength.
11 . The light emitting apparatus of claim 10 ,
wherein the phosphor includes at least one of a green phosphor or a yellow phosphor; and a red phosphor.
12 . The light emitting apparatus of claim 10 , further comprising:
a red phosphor layer provided on a rear surface of the substrate,
wherein the phosphor provided in the light conversion layer is at least one of a green phosphor and a yellow phosphor.
13 . The light emitting apparatus of claim 10 , further comprising:
a protection layer provided on an outer surface of the light conversion layer.
14 . The light emitting apparatus of claim 13 ,
wherein the protection layer includes at least one of silicone or a glass filler.
15 . A product, comprising:
a device substrate;
light emitting devices disposed on the device substrate;
a first passivation material covering each of the light emitting devices; and
a second passivation material disposed on the first passivation material and including white material that blocks or reflects light emitted from each of the light emitting devices,
wherein a side surface of the second passivation material is positioned on a same plane as a side surface of the first passivation material, and
wherein at least one of the light emitting devices comprises:
a substrate;
a light emitter disposed on a first region of the substrate;
first and second electrodes provided on the light emitter;
first and second bumps respectively provided on the first and second electrodes, respectively,
a first insulation layer provided between the light emitter and the first passivation material, wherein the first passivation material includes a material different from that of the first insulation layer; and
a second insulation layer provided between the first insulation layer and the first passivation material and having first and second through holes exposing portions of upper surfaces of the first and second electrodes,
wherein the first and second bumps cover portions of the first and second electrodes around the first and second through holes, respectively.
16 . The product of claim 15 , wherein each of the light emitting devices is mounted on the device substrate through the first and second bumps.
17 . The product of claim 16 , further comprising:
a light conversion layer covering the first passivation material and including fluorine,
wherein a portion of the first passivation material is disposed between the light conversion layer and the substrate.
18 . The product of claim 15 , further comprising:
a light reflection layer disposed on the device substrate.
19 . The product of claim 18 ,
wherein the first passivation material covers a portion of the light reflection layer.