Light-emitting device and article
View Patent ↗A device including a layer comprising a light emissive area and a light non-emissive area. A light-extracting feature is disposed over the light non-emissive area. The light-extracting features can include surface aberrations and reflective index matching elements. A method of forming the device is also provided.
1. A device comprising:
a layer having a light emissive area and a light non-emissive area; and
a light-extracting feature disposed over the light non-emissive area;
wherein the light-extracting feature comprises surface aberrations disposed over the light non-emissive area in the layer.
2. The device of claim 1 , wherein the light-extracting feature comprises dents or scratches disposed over the light non-emissive area in the layer.
3. The device of claim 1 , wherein the light-extracting feature comprises refractive index matching elements disposed over the light non-emissive area in the layer.
4. The device of claim 1 , wherein the light-extracting feature comprises refractive index matching spheres disposed over the light non-emissive area in the layer.
5. The device of claim 1 , wherein the light-extracting feature comprises refractive index matching micro-lens disposed over the light non-emissive area in the layer.
6. The device of claim 1 , wherein the light-extracting feature comprises refractive index matching micro-spheres disposed over the light non-emissive area in the layer.
7. The device of claim 1 , wherein the light-extracting feature comprises a two-dimensional photonic crystal feature disposed over the light non-emissive area in the layer.
8. The device of claim 1 , wherein the device further comprises reflective coatings at edges of the layer.
9. The device of claim 1 , wherein the device further comprises a transparent conductive oxide layer disposed over the layer, and a refractive index matching feature is disposed between the transparent conductive oxide layer and the layer.
10. The device of claim 1 , wherein the device further comprises a transparent conductive oxide layer disposed over the layer, and a refractive index matching layer is disposed between the transparent conductive oxide layer and the layer.
11. A method comprising:
providing a layer that supports a plurality of light-emitting elements, wherein the plurality of light-emitting elements are disposed at a pre-determined distance from each other;
resulting in the formation of a plurality of light emissive areas, corresponding to the plurality of light-emitting elements on the layer and formation of a plurality of light non-emissive areas, corresponding to the pre-determined distance between the light-emitting elements in the layer; and
disposing a light extracting feature so as to correspond with the plurality of light non-emissive areas on the layer;
wherein the disposing a light-extracting feature comprises disposing surface aberrations over the plurality of non-emissive areas in the layer.
12. The method of claim 11 , wherein the wherein the disposing a light-extracting feature comprises disposing a refractive index matching element over the plurality of non-emissive areas in the layer.