US Patent 8030664 - Nanowire quantum well LED

http://www.freepatentsonline.com/8030664.html

This patent from Samsung teaches increasing the light emitting area an efficiency of LEDs by using a nanowire array and quantum well structure. Claim 1 reads:

1. A light emitting device comprising:

a substrate; and

a nanowire array formed on the substrate and having a plurality of nanowire structures, wherein each of the nanowire structures comprises a stack having a semiconductor layer;

an active layer formed on the semiconductor layer, the active layer comprising a quantum well structure;

an insulating layer formed on the active layer; and a metal layer formed on the insulating layer.