Light emitting device
View Patent ↗A light-emitting device is disclosed, comprising a substrate; a light-emitting structure on the substrate comprising a first region and a second region; a barrier layer on the first region having a bottom surface and a sidewall, wherein an angle between the sidewall and the bottom surface is between 10°70°; and a transparent conductive layer formed on the light-emitting structure and the barrier layer; wherein a difference between a thickness of the transparent conductive layer at the sidewall on the barrier layer and a thickness of the transparent conductive layer on the second region of the light-emitting structure forms a ratio not larger than 10 %.
1. A light-emitting device, comprising:
a substrate;
a light-emitting structure on the substrate comprising a first region and a second region;
a barrier layer on the first region having a bottom surface and a sidewall; and
a transparent conductive layer formed on the light-emitting structure and the barrier layer;
wherein an angle between the sidewall and the bottom surface is between 10°-70°;
wherein the transparent conductive layer is formed between the sidewall of the barrier layer and the second region of the light-emitting structure, wherein a difference between a thickness of the transparent conductive layer at the sidewall on the barrier layer and a thickness of the transparent conductive layer on the second region of the light-emitting structure forms a ratio not larger than 10%.
2. The device of claim 1 , wherein a thickness of the barrier layer is larger than 3000 angstroms and less than 9700 angstroms.
3. The device of claim 1 , further comprising a first electrode formed on the transparent conductive layer at a position corresponding to the barrier layer, wherein the first electrode has a shape substantially the same as the barrier layer.
4. The device of claim 3 , wherein the first electrode comprises a first electrode pad and an extended electrode; the light-emitting device further comprises a second electrode which comprises a second electrode pad; and wherein the extended electrode extends from the first electrode pad to the second electrode pad.
5. The device of claim 1 , further comprising
an electrode formed on the transparent conductive layer wherein the electrode comprises an electrode pad and an extended electrode, the light-emitting structure comprises four sides, and the barrier layer comprises an electrode region on a position corresponding to the electrode and an extension region extending to the four sides from the electrode region.
6. The device of claim 1 , wherein the barrier layer comprises an insulation material having a resistance larger than 10 14 Ω-cm.
7. The device of claim 1 , wherein the substrate comprises an inclined sidewall.
8. The device of claim 7 , wherein the inclined sidewall comprises a rough surface.
9. A light-emitting device, comprising:
a substrate;
a light-emitting structure on the substrate comprising a first region and a second region;
a barrier layer on the first region having a bottom surface and a sidewall, wherein an angle between the sidewall and the bottom surface is between 10°-70°; and
a transparent conductive layer formed on the light-emitting structure and the barrier layer;
wherein a difference between a thickness of the transparent conductive layer at the sidewall on the barrier layer and a thickness of the transparent conductive layer on the second region of the light-emitting structure forms a ratio not larger than 10%.
10. The device of claim 9 , wherein a thickness of the barrier layer is larger than 3000 angstroms and less than 9700 angstroms.
11. The device of claim 9 , further comprising a first electrode formed on the transparent conductive layer at a position corresponding to the barrier layer, wherein the first electrode has a shape substantially the same as the barrier layer.
12. The device of claim 11 , wherein the first electrode comprises a first electrode pad and an extended electrode; the light-emitting device further comprises a second electrode which comprises a second electrode pad; and wherein the extended electrode extends from the first electrode pad to the second electrode pad.
13. The device of claim 9 , further comprising
an electrode formed on the transparent conductive layer wherein the electrode comprises an electrode pad and an extended electrode, the light-emitting structure comprises four sides, and the barrier layer comprises an electrode region on a position corresponding to the electrode and an extension region extending to the four sides from the electrode region.
14. The device of claim 9 , wherein the barrier layer comprises an insulation material having a resistance larger than 10 14 Ω-cm.
15. The device of claim 9 , wherein the substrate comprises an inclined sidewall.
16. The device of claim 15 , wherein the inclined sidewall comprises a rough surface.