LIGHT EMITTING DIODE WITH LOW REFRACTIVE INDEX MATERIAL LAYERS TO REDUCE LIGHT GUIDING EFFECTS
First Claim
1. A light-emitting diode (LED) for emitting emitted light having a particular wavelength, said LED comprising:
- at least one n-doped layer;
at least one p-doped layer;
an active region comprising at least one layer of light-emitting material disposed between said at least one n-doped layer and said at least one p-doped layer, said active region having an average refractive index, calculated by averaging the refractive index across the thickness of said active region; and
at least one low refractive index layer disposed within said particular wavelength of said active region, said at least one low refractive index layer having a refractive index below said average refractive index and a thickness sufficient to limit light being emitted into a guided mode of said active region to no more than 10% of said emitted light.
3 Assignments
0 Petitions
Accused Products
Abstract
A light-emitting diode (LED) for emitting emitted light having a particular wavelength, said LED comprising: (a) at least one n-doped layer; (b) at least one p-doped layer; (c) an active region comprising at least one layer of light-emitting material disposed between said at least one n-doped layer and said at least one p-doped layer, said active region having an average refractive index, calculated by averaging the LED'"'"'s refractive index across the thickness of the active region; and (d) at least one low refractive index layer disposed within said particular wavelength of said active region, said at least one low refractive index layer having a refractive index below said average refractive index and a thickness sufficient to limit light being emitted into a guided mode of said active region to no more than 10% of said emitted light.
-
Citations
20 Claims
-
1. A light-emitting diode (LED) for emitting emitted light having a particular wavelength, said LED comprising:
-
at least one n-doped layer; at least one p-doped layer; an active region comprising at least one layer of light-emitting material disposed between said at least one n-doped layer and said at least one p-doped layer, said active region having an average refractive index, calculated by averaging the refractive index across the thickness of said active region; and at least one low refractive index layer disposed within said particular wavelength of said active region, said at least one low refractive index layer having a refractive index below said average refractive index and a thickness sufficient to limit light being emitted into a guided mode of said active region to no more than 10% of said emitted light. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. A light-emitting diode (LED) comprising:
-
at least one n-doped layer characterized by a host refractive index; at least one p-doped layer; an active region comprising of at least one layer of light-emitting material, disposed between said at least one n-doped layer and said at least one p-doped layer, characterized by an average refractive index calculated across the thickness of said active region, and characterized by an optical wavelength of emitted light; at least one low refractive index layer disposed within one optical wavelength of said active region, and configured to substantially reduce light guiding by said active region; and a superlattice underlying said active region, wherein said at least one low refractive index material layer is disposed within a distance from said superlattice that is less than one optical wavelength, wherein said average refractive index is from 0% to 5% higher than said host refractive index. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
-
Specification