Patent ID: 8450147
Filing Date: 2013-05-28
Classification: H01L

Abstract:
1. A method of fabricating a light emitting diode (LED) comprising: separating LEDs produced to provide a common nominal peak wavelength, into a plurality of groups of LEDs, each group of LEDs producing a different range of peak wavelengths about the common nominal wavelength, determined by testing; mounting a plurality of LEDs of a single particular group onto a submount; providing a plurality of different wavelength-conversion sheets, each sheet comprising a phosphor combined with a flexible encapsulate material, each sheet having a different phosphor conversion characteristic; selecting a particular one of the wavelength-conversion sheets for applying over the LEDs on the submount; energizing one or more LEDs on the submount; detecting an emitted color generated by the combination of the energized one or more LEDs and the particular wavelength-conversion sheet to ensure the emitted color meets a predetermined color; and encapsulating the LEDs from the single particular group mounted on the submount with the particular wavelength-conversion sheet if the emitted color meets the predetermined color.