Flat panel solid state light source

摘要

A light emitting diode structure capable of use within a flat panel device with small thickness and large area size. In some embodiments, the LED structure is combined with phosphors to generate light of varying chrominance and luminance including white and other visible spectrum light, and may be used to provide either ambient or accent illumination. The flat panel light source comprises a first GaN cladding layer of a first conductance type, a second GaN cladding layer of a second conductance type formed on the first layer and having at least one window region formed on the first cladding layer, an InxGa1-xN active layer and a third cladding layer of an opposite conduction type formed on the second cladding layer. One or more phosphor layers for converting light of a first wavelength to light of a second wavelength may be added to provide polychromatic emissions.