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公开(公告)号：US20160079484A1
公开(公告)日：2016-03-17
申请号：US14853311
申请日：2015-09-14
Applicant: NICHIA CORPORATION
Inventor： Shoji HOSOKAWA , Daiki KURAMOTO , Kenji NAKATA , Atsushi BANDO
CPC classification number: H01L33/502 , H01L21/56 , H01L23/29 , H01L23/295 , H01L31/0203 , H01L33/501 , H01L33/508 , H01L33/52 , H01L33/56 , H01L2924/01015 , H01L2924/0106 , H01L2924/181 , H01L2924/186
Abstract: A light emitting device includes a light emitting element, a molded member, and a sealing member. The light emitting element is arranged on or above the molded member. The sealing member covers the light emitting element. The sealing member contains a phosphor, and a filler material. The phosphor can be excited by light of the light emitting element, and emit luminescent radiation. The filler material contains neodymium hydroxide, neodymium aluminate or neodymium silicate. The filler material absorbs a part of the spectrum of the mixed light of the light emitting element and the phosphor so that the other parts of the spectrum of this mixed light are extracted from the light emitting device.
Abstract translation: 发光装置包括发光元件，模制构件和密封构件。 发光元件布置在模制构件上或上方。 密封构件覆盖发光元件。 密封构件包含磷光体和填充材料。 荧光体可以被发光元件的光激发，并发出发光。 填充材料含有氢氧化钕，铝酸钕或硅酸钕。 填充材料吸收发光元件和荧光体的混合光的一部分光谱，使得该混合光的光谱的其它部分从发光器件中提取。
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公开(公告)号：US20200181489A1
公开(公告)日：2020-06-11
申请号：US16790049
申请日：2020-02-13
Applicant: NICHIA CORPORATION
Inventor： Shoji HOSOKAWA , Daiki KURAMOTO
Abstract: A method of producing a nitride fluorescent material including a step of first heat-treating a first compound containing at least one alkaline earth metal element selected from the group consisting of Ba, Sr, Ca and Mg, a second compound containing at least one element selected from the group consisting of Eu, Ce, Tb and Mn, and a Si-containing compound, in an atmosphere containing nitrogen to obtain a calcined product of raw materials, and a step of second heat-treating the calcined product of raw materials, a Ba-containing compound, a Si-containing compound, and optionally a third compound containing at least one element selected from the group consisting of Eu, Ce, Tb and Mn, and optionally a fourth compound containing at least one alkaline earth metal element selected from the group consisting of Sr, Ca and Mg, in an atmosphere containing nitrogen to obtain a nitride fluorescent material is provided, wherein the ratio of the charge-in molar amount of Ba to the total charge-in molar amount of at least one alkaline earth metal element to be contained in the calcined product of raw materials in the step of obtaining the calcined product of raw materials is smaller than the ratio of the charge-in molar amount of Ba to the total charge-in molar amount of at least one alkaline earth metal element to be contained in the nitride fluorescent material in the step of obtaining the nitride fluorescent material.
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公开(公告)号：US20180086977A1
公开(公告)日：2018-03-29
申请号：US15717232
申请日：2017-09-27
Applicant: NICHIA CORPORATION
Inventor： Shoji HOSOKAWA , Daiki KURAMOTO
CPC classification number: C09K11/7734 , C09K11/0883
Abstract: A method of producing a nitride fluorescent material including a step of first heat-treating a first compound containing at least one alkaline earth metal element selected from the group consisting of Ba, Sr, Ca and Mg, a second compound containing at least one element selected from the group consisting of Eu, Ce, Tb and Mn, and a Si-containing compound, in an atmosphere containing nitrogen to obtain a calcined product of raw materials, and a step of second heat-treating the calcined product of raw materials, a Ba-containing compound, a Si-containing compound, and optionally a third compound containing at least one element selected from the group consisting of Eu, Ce, Tb and Mn, and optionally a fourth compound containing at least one alkaline earth metal element selected from the group consisting of Sr, Ca and Mg, in an atmosphere containing nitrogen to obtain a nitride fluorescent material is provided, wherein the ratio of the charge-in molar amount of Ba to the total charge-in molar amount of at least one alkaline earth metal element to be contained in the calcined product of raw materials in the step of obtaining the calcined product of raw materials is smaller than the ratio of the charge-in molar amount of Ba to the total charge-in molar amount of at least one alkaline earth metal element to be contained in the nitride fluorescent material in the step of obtaining the nitride fluorescent material.
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公开(公告)号：US20180002600A1
公开(公告)日：2018-01-04
申请号：US15635751
申请日：2017-06-28
Applicant: NICHIA CORPORATION
Inventor： Shoji HOSOKAWA , Daiki KURAMOTO
CPC classification number: C09K11/7734 , C09K11/0883
Abstract: A method of producing a nitride fluorescent material having relatively high light emission intensity is provided. The method of producing a nitride fluorescent material includes preparing a calcined product having a composition containing at least one first element selected from the group consisting of Ba, Sr, Ca, and Mg, at least one second element selected from the group consisting of Eu, Ce, Tb, and Mn, and Si and N, and bringing the calcined product into contact with a fluorine-containing substance at a temperature in a range of −20° C. or higher and lower than 150° C.
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