Thursday, September 22, 2011

US Patent 8022432 - LED including nanorod transparent electrodes

This patent from LG Display teaches forming nanorod structures in a transparent electrode to minimize internal reflection and increase light emission in display and LED applications. Claim 1 reads:

1. A light-emitting device, comprising:

a first conductive semiconductor layer, a light-emitting active layer, and a second conductive semiconductor layer, each of which is sequentially laminated on a substrate;

a plurality of nanorods, grown from a transparent conductive material, formed on the second conductive semiconductor layer;

an electrode formed on the plurality of nanorods; and

another electrode formed on the first conductive semiconductor layer, wherein each of the plurality of nanorods comprises a transparent material loaded into gaps between the nanorods to expose upper surfaces of the nanorods or upper tips thereof.