Single phosphor layer photonic device for generating white light or color lights

摘要

A photonic device generates light from a full spectrum of lights including white light. The device includes two or more LEDs grown on a substrate, each generating light of a different wavelength and separately controlled. A light-emitting structure is formed on the substrate and apportioned into the two or more LEDs by etching to separate the light-emitting structure into different portions. At least one of the LEDs is coated with a phosphor material so that different wavelengths of light are generated by the LEDs while the same wavelength of light is emitted from the light-emitting structure.

主权项

1. A method of fabricating a photonic device, comprising:
providing a growth substrate; forming a light-emitting structure on the growth substrate, said structure comprising:
a first doped layer doped with a first impurity of a first conductivity type;an active layer over the first doped layer; anda second doped layer over the active layer, the second doped layer doped with a second impurity of a second conductivity type opposite the first conductivity type; forming a plurality of light emitting devices using the light-emitting structure, wherein at least one of the plurality of light emitting devices comprise a phosphor layer, wherein the forming of the plurality of light emitting devices comprises:
forming a print having a plurality of pre-defined phosphor portions;bonding the print to the light-emitting structure;photomasking the pre-defined phosphor portions on the light-emitting structure; andetching and removing street lanes to define the plurality of light emitting devices, each device operable to emit light of a different wavelength; and bonding the plurality of light emitting devices to a package substrate.