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US 12,560,800 B2Granted
Color wheel
AssigneeLG Electronics Inc.
InventorsBokyung Kang, Gunyoung Hong, Younggil Yoo, Minsung Kim, Kyungpil Kim, Seungmi Baek
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Abstract
A color wheel according to an embodiment of the present invention comprises: a basic fluorescent body having a basic light-emitting wavelength; and at least one modified fluorescent body having at least one light-emitting wavelength different from the basic light-emitting wavelength, wherein the basic fluorescent body comprises Y3Al5O12 and the modified fluorescent body comprises Y3(GaxAl(1-x))5O12:Ce in which gallium is doped on the basic fluorescent body.
Claims9
A color wheel comprising:
- a basic phosphor having a basic emission wavelength;
- at least one modified phosphor having at least one emission wavelength different from the basic emission wavelength;
- and
- a substrate on which the basic phosphor and the modified phosphor are disposed,
- wherein the substrate comprises a basic phosphor area on which the basic phosphor is disposed and a modified phosphor area on which the modified phosphor is disposed,
- wherein the basic phosphor comprises Y3Al5O12,
- wherein the modified phosphor comprises Y3(GaxAl(1-x))5O12:Ce in which gallium is doped into the basic phosphor,
- wherein the modified phosphor comprises a plurality of modified phosphors having different gallium contents,
- wherein the modified phosphor area comprises a plurality of modified phosphor small areas in which each of the plurality of modified phosphors having different gallium contents is disposed, and
- wherein each of the modified phosphor small areas has a different central angle according to a gallium content of the modified phosphor.
7 more elements
A color wheel comprising:
- a basic phosphor having a basic emission wavelength;
- a first modified phosphor and a second modified phosphor having at least one emission wavelength different from the basic emission wavelength;
- wherein the basic phosphor comprises Y3Al5O12, and
- wherein the first modified phosphor and the second modified phosphor comprise Y3(GaxAl(1-x))5O12:Ce in which gallium is doped into the basic phosphor, wherein x value of the second modified phosphor is greater than x value of the first modified phosphor, and
- wherein an area of the first modified phosphor is greater than an area of the basic phosphor and less than an area of the second modified phosphor.
2 more elements
Dependencies are inferred from the claim text.