Patent ID: 9559250
Date: 2017-01-31
CPC Classifications: H01L

Claim:
1. A method of manufacturing a light emitting structure comprising: providing a transparent conductive oxide (TCO) layer; a GaN layer and a sapphire layer; providing a photoresist pattern in the areas to be defined as emitters by photolithography; baking the photoresist pattern to allow it to reflow into a rounded form; transferring the photoresist pattern by a dry etch technique, said techniques comprising inductively coupled plasma etch (ICP) or Reactive Ion Etching (RIE), into the TCO layer and then into the GaN layer; and covering the light emitting structure with a thin insulating layer, said thin insulating layer comprising silicon dioxide or silicon nitride; wherein the light emitting structure is capable of emitting electromagnetic radiation and further wherein the TCO layer is located adjacent the light emitting structure through which electromagnetic radiation may be transmitted, wherein the TCO layer improves the amount of light capable of being extracted from the light emitting structure.