0025] In another embodiment, instead of a phosphor material, one or more sub-LEDs may be covered by a different type of color conversion material such as semiconductor nanocrystals, called quantum dots. Quantum dots, for example nanocrystals of cadmium selenide (CdSe), behave like phosphors but can be tuned to radiate light of different colors by changing the physical size of the dots.
Found this nugget buried in the patent! Entanglement