Phosphor, fluorescent gel, and light emitting diode device
AssigneeCoretronic Corporation
InventorsSheng-Min Wang, Chien-Min Wang
Life of this patent
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Abstract
A phosphor is provided. The chemical formula of the phosphor is Me3-aYO5-bXb:aCe, the Me is one of calcium (Ca), strontium (Sr), barium (Ba), europium (Eu), terbium (Tb), or the combination thereof; Y is one of silicon (Si), boron (B), aluminum (Al), or the combination thereof; X is fluorine (F), chlorine (Cl), bromine (Br), or nitrogen (N); coefficient a is between 0.001 and 0.5; coefficient b is between 0 and 5. Besides, a fluorescent gel and a light emitting diode device including the phosphor are provided.
Claims18
A phosphor, the chemical formula of the phosphor being Me3-aYO5-bXb:aCe, the Me comprises calcium (Ca), strontium (Sr), barium (Ba), europium (Eu), terbium (Tb), or a combination thereof;
- Y comprises silicon (Si), boron (B), aluminum (Al), or a combination thereof;
- X comprises fluorine (F), chlorine (Cl), bromine (Br), or nitrogen (N);
- coefficient a has a value in a range between 0.001 and 0.5;
- coefficient b has a value in a range between 0 and 5.
A fluorescent gel, comprising:
- a transparent material;
- and
- a plurality of first phosphors, doped in the transparent material, wherein a chemical formula of each of the phosphors is Me3-aYO5-bXb:aCe, wherein, Me comprises calcium (Ca), strontium (Sr), barium (Ba), europium (Eu), terbium (Tb), or a combination thereof;
- Y comprises silicon (Si), boron (B), aluminum (Al), or a combination thereof;
- X comprises fluorine (F), chlorine (Cl), bromine (Br), or nitrogen (N);
- coefficient a has a value in a range between 0.001 and 0.5;
- coefficient b has a value in a range between 0 and 5.
A light emitting diode (LED) device, comprising:
- a carrier;
- a LED chip, disposed on the carrier and electrically connected to the carrier, wherein the LED chip is suitable for emitting a first light;
- and
- a fluorescent gel, disposed on the LED chip, the fluorescent gel comprising:
- a transparent material;
- and
- a plurality of first phosphors, doped in the transparent material, the first phosphors being suitable for being excited by the first light to emit a second light, wherein a chemical formula of each of the phosphors is Me3-aYO5-bXb:aCe, Me comprises calcium (Ca), strontium (Sr), barium (Ba), europium (Eu), terbium (Tb), or a combination thereof;
- Y comprises silicon (Si), boron (B), aluminum (Al), or a combination thereof;
- X comprises fluorine (F), chlorine (Cl), bromine (Br), or nitrogen (N);
- coefficient a has a value in a range between 0.001 and 0.5;
- coefficient b has a value in a range between 0 and 5.
Dependencies are inferred from the claim text.