Light-emitting diode device for voltage switchable dielectric material having high aspect ratio particles
One or more embodiments provide for a light emitting diode device that utilizes voltage switchable dielectric material having semi-conductive or conductive materials that have a relatively high aspect ratio.
1. A light emitting diode (LED) device comprising:
a non-linear resistive polymer composition comprising a concentration of nano-dimensioned particles that individually have an aspect ratio that is greater than 10:1;
wherein said composition is (i) insulative in absence of any voltage that exceeds a characteristic voltage level, and (ii) conductive with application of a voltage that exceeds the characteristic voltage level; and
wherein the polymer composition is positioned to protect the LED against transient electrical events.
2. The LED device of claim 1 , wherein the concentration of nano-dimensioned particles individually have an aspect ratio that is of an order of 100:1 or greater.
3. The LED device of claim 1 , wherein the concentration of nano-dimensioned particles are organic.
4. The LED device of claim 3 , the concentration of nano-dimensioned particles include fullerenes.
5. The LED device of claim 3 , the concentration of nano-dimensioned particles include carbon nanotubes.
6. The LED device of claim 3 , wherein the concentration of nano-dimensioned particles include metallic nanowires or nanorods.
7. The LED device of claim 1 , further comprising a concentration of conductor and/or semiconductor particles, and wherein a combined concentration of the nano-dimensioned particles and the conductor and/or semiconductor particles is below a percolation threshold of the polymer composition.
8. The LED device of claim 1 , further comprising a printed circuit board on which at least a portion of the polymer composition is provided.
9. The LED device of claim 1 , wherein the LED device is provided as a package.
10. The LED device of claim 1 , further comprising a separate concentration of polymer phase particles.
11. The LED device of claim 1 , further comprising a concentration of metal particles.
12. The LED device of claim 1 , wherein the concentration of metal particles selected from the group consisting of copper, gold, silver, nickel, or cobalt and mixtures thereof.