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公开(公告)号：US20210095202A1
公开(公告)日：2021-04-01
申请号：US17033576
申请日：2020-09-25
Applicant: NICHIA CORPORATION
Inventor： Kenichi AOYAGI , Takashi KAIDE , Yuya TAKAHASHI , Shoji HOSOKAWA
Abstract: Provided a method of producing a β-sialon fluorescent material having excellent emission intensity. The method includes providing a first composition containing aluminum, an oxygen atom, and a europium-containing silicon nitride, heat treating the first composition, contacting the heat-treated composition and a basic substance to obtain a second composition, and contacting the second composition resulting from contacting the heat-treated composition with the basic substance and an acidic liquid medium containing an acidic substance.
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公开(公告)号：US20200185575A1
公开(公告)日：2020-06-11
申请号：US16793018
申请日：2020-02-18
Applicant: NICHIA CORPORATION
Inventor： Kenichi AOYAGI , Takashi KAIDE , Takuya NAKABAYASHI , Tetsuya ISHIKAWA , Shoji HOSOKAWA
Abstract: A wavelength converting member comprising a first wavelength converting layer containing: a first fluorescent material having a light emission peak wavelength in a range of 620 nm or more and 660 nm or less; a second fluorescent material having a light emission peak wavelength in a range of 510 nm or more and 560 nm or less; and a resin, wherein the average particle diameter, as measured according to a Fisher Sub-Sieve Sizer method, of the first fluorescent material is in a range of 2 μm or more and 30 μm or less, wherein the second fluorescent material comprises a β-SiAlON fluorescent material, the circularity of the β-SiAlON fluorescent material is 0.7 or more, and the volume average particle diameter, as measured according to a laser diffraction scattering particle size distribution measuring method, of the β-SiAlON fluorescent material is in a range of 2 μm or more and 30 μm or less, and wherein the thickness of the first wavelength converting layer is in a range of 50 μm or more and 200 μm or less.
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公开(公告)号：US20160355731A1
公开(公告)日：2016-12-08
申请号：US15172862
申请日：2016-06-03
Applicant: NICHIA CORPORATION
Inventor： Kenichi AOYAGI , Takashi KAIDE , Motoharu MORIKAWA , Shoji HOSOKAWA
IPC: C09K11/77
CPC classification number: C09K11/7734
Abstract: A method for producing a β-sialon fluorescent material is provided. The method includes heat-treating a mixture containing an aluminium compound, a first europium compound, and silicon nitride to obtain a first heat-treated product; and heat-treating the first heat-treated product with a second europium compound in a rare gas atmosphere to obtain a second heat-treated product.
Abstract translation: 提供了β-赛隆荧光材料的制造方法。 该方法包括对含有铝化合物，第一铕化合物和氮化硅的混合物进行热处理以获得第一热处理产物; 在稀有气体气氛中用第二铕化合物对第一热处理物进行热处理，得到第二热处理物。
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公开(公告)号：US20160347999A1
公开(公告)日：2016-12-01
申请号：US15165580
申请日：2016-05-26
Applicant: NICHIA CORPORATION
Inventor： Motoharu MORIKAWA , Kenichi AOYAGI , Takashi KAIDE , Shoji HOSOKAWA
IPC: C09K11/77
CPC classification number: C09K11/7734
Abstract: A method for producing a β-sialon fluorescent material superior in light emitting luminance is provided. The method includes heat-treating a first mixture containing an aluminum compound, a europium compound, and a first silicon oxynitride compound to obtain a first heat-treated product, and heat-treating a second mixture containing the first heat-treated product, an aluminum compound, a europium compound, and a second silicon oxynitride compound, which has a larger oxygen content than the first silicon oxynitride compound, to obtain a second heat-treated product.
Abstract translation: 提供了一种制造发光亮度优异的β-赛隆荧光体的方法。 该方法包括热处理包含铝化合物，铕化合物和第一氮氧化硅化合物的第一混合物以获得第一热处理产物，并且热处理含有第一热处理产物的第二混合物，铝 化合物，铕化合物和第二氮氧化硅化合物，其具有比第一氮氧化硅化合物更大的氧含量，以获得第二热处理产物。
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公开(公告)号：US20230045233A1
公开(公告)日：2023-02-09
申请号：US17937766
申请日：2022-10-03
Applicant: NICHIA CORPORATION
Inventor： Kenichi AOYAGI , Takashi KAIDE , Yuya TAKAHASHI , Shoji HOSOKAWA
IPC: C01B21/082 , C01F17/30 , C09K11/08 , C09K11/77
Abstract: Provided a method of producing a β-sialon fluorescent material having excellent emission intensity. The method includes providing a first composition containing aluminum, an oxygen atom, and a europium-containing silicon nitride, heat treating the first composition, contacting the heat-treated composition and a basic substance to obtain a second composition, and contacting the second composition resulting from contacting the heat-treated composition with the basic substance and an acidic liquid medium containing an acidic substance.
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Patent Agency Ranking
公开(公告)号：US20210095203A1
公开(公告)日：2021-04-01
申请号：US17120662
申请日：2020-12-14
Applicant: NICHIA CORPORATION
Inventor： Kenichi AOYAGI , Takashi KAIDE , Motoharu MORIKAWA , Shoji HOSOKAWA
Abstract: Provided is a method of producing a β-sialon fluorescent material having a high light emission intensity and an excellent light emission luminance. The method includes preparing a calcined product having a composition of β-sialon containing an activating element; grinding the calcined product to obtain a ground product; and heat-treating the ground product to obtain a heat-treated product. A specific surface area of the ground product is 0.2 m2/g or more.
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公开(公告)号：US20190305193A1
公开(公告)日：2019-10-03
申请号：US16369046
申请日：2019-03-29
Applicant: NICHIA CORPORATION
Inventor： Kenichi AOYAGI , Takashi KAIDE , Takuya NAKABAYASHI , Tetsuya ISHIKAWA , Shoji HOSOKAWA
Abstract: A wavelength converting member comprising a first wavelength converting layer containing: a first fluorescent material having a light emission peak wavelength in a range of 620 nm or more and 660 nm or less; a second fluorescent material having a light emission peak wavelength in a range of 510 nm or more and 560 nm or less; and a resin, wherein the average particle diameter, as measured according to a Fisher Sub-Sieve Sizer method, of the first fluorescent material is in a range of 2 μm or more and 30 μm or less, wherein the second fluorescent material comprises a β-SiAlON fluorescent material, the circularity of the β-SiAlON fluorescent material is 0.7 or more, and the volume average particle diameter, as measured according to a laser diffraction scattering particle size distribution measuring method, of the β-SiAlON fluorescent material is in a range of 2 μm or more and 30 μm or less, and wherein the thickness of the first wavelength converting layer is in a range of 50 μm or more and 200 μm or less.
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公开(公告)号：US20170342321A1
公开(公告)日：2017-11-30
申请号：US15606153
申请日：2017-05-26
Applicant: NICHIA CORPORATION
Inventor： Kenichi AOYAGI , Takashi KAIDE , Motoharu MORIKAWA , Shoji HOSOKAWA
CPC classification number: C09K11/7734 , C09K11/0883
Abstract: Provided is a method of producing a β-sialon fluorescent material having a high light emission intensity and an excellent light emission luminance. The method includes preparing a calcined product having a composition of β-sialon containing an activating element; grinding the calcined product to obtain a ground product; and heat-treating the ground product to obtain a heat-treated product. A specific surface area of the ground product is 0.2 m2/g or more.
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公开(公告)号：US20240336835A1
公开(公告)日：2024-10-10
申请号：US18627015
申请日：2024-04-04
Applicant: NICHIA CORPORATION
Inventor： Hiroshi OGASA , Hiroki INOUE , Kenichi AOYAGI
IPC: C09K11/06
CPC classification number: C09K11/06 , C09K2211/182
Abstract: An object of the present invention is to provide: a rare earth metal complex phosphor having an extended durability; and a method of producing such a rare earth metal complex phosphor; and the like. Provided is a method of producing a metal complex phosphor having an emission peak wavelength of 600 nm to 635 nm, the method comprising: preparing a ligand that is represented by Chemical Formula (I) and comprises two sets of azomethine groups, and dissolving this ligand in a first solvent to prepare a solution (1); preparing a rare earth metal complex that comprises a β-diketonato ligand represented by Chemical Formula (II) but does not comprise the ligand represented by Chemical Formula (I), and dissolving this rare earth metal complex in a second solvent to prepare a solution (2); mixing the solution (1) and the solution (2).
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公开(公告)号：US20190330528A1
公开(公告)日：2019-10-31
申请号：US16504937
申请日：2019-07-08
Applicant: NICHIA CORPORATION
Inventor： Motoharu MORIKAWA , Shoji HOSOKAWA , Takashi KAIDE , Kenichi AOYAGI
Abstract: A method for producing β-sialon fluorescent material having excellent emission intensity is provided. The method for producing β-sialon fluorescent material includes providing a composition comprising silicon nitride that contains aluminium, an oxygen atom, and europium, heat treating the composition, contacting the heat-treated composition with a basic substance, and washing the composition, which has been contacted with the basic substance, with an acidic liquid medium.
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