Patent ID: 9202996
Filing Date: 2015-12-01
Classification: H01L

Abstract:
1. A lighting device comprising a chip-on-board (COB) light emitting diode (LED) light source, a light source encapsulant, a quantum dot distributed color conversion medium, and a quantum dot glass containment plate, wherein: the COB LED light source comprises at least one LED and defines a light source encapsulant cavity in which the light source encapsulant is distributed over the LED; the quantum dot glass containment plate is positioned over the light source encapsulant cavity and contains the distributed color conversion medium; and the distributed color conversion medium comprises a quantum dot structure and is distributed in two dimensions over an emission field of the lighting device within the quantum dot glass containment plate; the light source encapsulant comprises a primary distributed color conversion medium; the color conversion medium of the quantum dot glass containment plate defines a supplemental emission field of the lighting device; and the emission field defined by the primary distributed color conversion medium is spatially congruent with, but spectrally distinct from, the supplemental emission field defined by the quantum dot glass containment plate.