US Patent 7816701 - Qdot LED

http://www.freepatentsonline.com/7816701.html

This patent from LG Innotek teaches using semiconductor quantum dots to improve the surface roughness and light emitting efficiency of III-Nitride LEDs. Claim 1 reads:

1. A semiconductor light emitting device comprising:

a first conductive semiconductor layer;

an active layer on the first conductive semiconductor layer;

a first quantum dot layer on the active layer; and

a second conductive semiconductor layer on the first quantum dot layer.