Patent ID: 8492746

Claim:
A light emitting diode (LED) die comprising: a substrate comprising an epitaxial stack having an n-type confinement layer, a multiple quantum well (MQW) layer in electrical contact with the n-type confinement layer configured to emit electromagnetic radiation, and a p-type confinement layer in electrical contact with the multiple quantum well (MQW) layer; a wavelength conversion layer on the substrate configured to convert at least some of the electromagnetic radiation emitted by the multiple quantum well (MQW) layer into electromagnetic radiation having a different wavelength range, the wavelength conversion layer comprising a base material with a selected thickness, and a plurality of particles with a selected size and concentration embedded in the base material, the particles including a plurality of wavelength conversion particles having a first diameter and a first weight percentage in the base material, and a plurality of reflective particles having a second diameter and a second weight percentage in the base material.