Patent ID: 11946640
Assignee: LUMILEDS, LLC
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC F  H  B  G | IPC F  H

Claim 13:
14. A method of manufacturing a lighting source workpiece comprising the steps of:
providing a substrate;
mounting a plurality of LED dies with bottom surfaces of the plurality of LEDs on the substrate, the plurality of LED dies being divided into at least a plurality of first LED dies and a plurality of second LED dies, the first plurality of LED dies configured to emit light having a first die color when turned on and the second plurality of LED dies configured to emit light having a second die color when turned on;
configuring electrical connections within the plurality of LED dies;
depositing a first dome-shaped filling over the plurality of first LED dies such that the first dome-shaped filling completely surrounds all surfaces of the plurality of first LED dies except the bottom surfaces, the first filling comprising a first phosphor such that the light having the first die color is converted to a first illuminous color when at least one of the plurality of first LEDs is turned on; and
depositing a second filling such that the second filling completely surrounds all surfaces of the plurality of second LED dies except the bottom surfaces and extends to the first dome-shaped filling while leaving at least a portion of a top surface of the first dome-shaped filling exposed from the second filling, the second filling comprising a second phosphor such that, when at least one of the plurality of second LEDs is turned on, the light having the the second die color is converted to a second illuminous color that has a higher absorption energy than an illumination energy of the first illuminous color and the light having the second die color passes over the first dome-shaped filling unconverted by the first dome-shaped filling.