Patent ID: 8299473
Filing Date: 2012-10-30
Classification: H01L

Abstract:
1. A packaged light emitting device comprising: a substrate member having a surface region; at least one light emitting diode overlying the surface region, the diode being fabricated on a substrate of semipolar or nonpolar GaN, and the diode emitting electromagnetic radiation of a first wavelength; an optical coupling layer coupled to the light emitting diode; an optical path provided between the light emitting diode and the optical coupling layer; and a transparent phosphor having a thickness overlying the optical coupling layer and being excited by emission from the light emitting diode to emit electromagnetic radiation of a second wavelength, wherein the optical coupling layer is free of materials that scatter light; and wherein the light emitting diode includes a quantum well region characterized by an electron wave function and a hole wave function which are overlapped within a predetermined spatial region of the quantum well region.