Light-emitting dies incorporating wavelength-conversion materials and related methods
In accordance with certain embodiments, electronic devices feature a polymeric binder, a frame defining an aperture therethrough, and a semiconductor die (e.g., a light-emitting or light-detecting element) suspended in the binder and within the aperture of the frame.
1. An electronic device comprising:
a light-emitting element comprising a first top surface and a first side surface;
a frame surrounding the side surface and comprising an inner side surface, an outer side surface, and a second top surface connecting the inner side surface and the outer side surface;
a polymeric binder comprising a third top surface and a second side surface, and covering the first side surface, the first top surface, and the second top surface; and
a transparent layer covering the third top surface, and comprising a third side surface and a fourth top surface,
wherein the outer side surface, the second side surface, and the third side surface are coplanar with each other.
2. The electronic device of claim 1 , wherein frame is formed of a reflective material.
3. The electronic device of claim 1 , wherein the polymeric binder comprises a wavelength-conversion material.
4. The electronic device of claim 1 , wherein the polymeric binder directly contacts the first side surface and the inner side surface.
5. The electronic device of claim 1 , wherein the transparent layer has a width larger than that of the light-emitting element.
6. The electronic device of claim 1 , wherein the polymeric binder comprises a wavelength-conversion material, and has a plurality of discrete regions, at least one of the plurality of discrete regions is devoid of the wavelength-conversion material.
7. The electronic device of claim 1 , wherein the transparent layer is separated from the first top surface by the polymeric binder.
8. The electronic device of claim 1 , wherein the second top surface is flat.
9. The electronic device of claim 1 , wherein the light-emitting element comprises a bottom surface opposite to the first top surface and not covered by the frame and the polymeric binder.
10. The electronic device of claim 1 , wherein the first top surface is substantially parallel to the second top surface, the third top surface, and the fourth top surface.
11. The electronic device of claim 1 , wherein the inner side surface is separated from the first side surface.
12. The electronic device of claim 1 , wherein the polymeric binder comprises an upper portion and a lower portion, the upper portion is wider than the lower portion.
13. The electronic device of claim 1 , wherein the polymeric binder directly contacts the first top surface and the first side surface.
14. The electronic device of claim 1 , wherein a distance between the fourth top surface and the third top surface is smaller than that between the third top surface and the first top surface.
15. The electronic device of claim 1 , wherein the transparent layer does not include a light-conversion material.
16. The electronic device of claim 3 , wherein the wavelength-conversion material comprises a phosphor or a quantum dot.
17. The electronic device of claim 9 , wherein the light-emitting element comprises a plurality of spaced-apart contacts disposed on the bottom surface.
18. The electronic device of claim 12 , wherein the upper portion has a width substantially equal to that of the transparent layer.