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US 10,345,688 B2Granted
Light emitting apparatus using composite material
AssigneeUnique Materials Co., Ltd.
InventorsPi-Tai Chou, Shang-Wei Chou
Life of this patent
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Abstract
The invention provides a light emitting apparatus including a projector color wheel and a light emitting diode (LED) device using a composite material, a method of manufacturing the composite material, and an optical film. The stability of the composite material has been greatly improved. Light emitting devices using the composite material have wide color gamut.
Claims17
A projector color wheel comprising:
- a plurality of color converters arranged to form a disk configuration, wherein each of the color converters comprises a composite material comprising at least one quantum dot and a silica material encapsulating a surface of the at least one quantum dot, wherein a number of the at least one quantum dot is plural, and a plurality of quantum dots are dispersed uniformly in the silica material;
- and
- a rotating portion disposed at a center of the disk configuration.
A light emitting diode (LED) device comprising:
- a LED chip;
- and
- a composite material disposed onto and in direct contact with the LED chip, wherein the composite material comprises a plurality of quantum dots and a silica material encapsulating surfaces of the quantum dots, and the quantum dots are dispersed uniformly in the silica material.
A light emitting apparatus comprising:
- a luminescent phosphor material capable of emitting light with a first color;
- and
- a composite material comprising a plurality of quantum dots capable of emitting light with a second color and a silica material encapsulating surfaces of the quantum dots, wherein the quantum dots are dispersed uniformly in the silica material and the first color and the second color is complementary to each other.
Dependencies are inferred from the claim text.