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公开(公告)号：US11329198B2
公开(公告)日：2022-05-10
申请号：US17414877
申请日：2019-10-04
Inventor： Takahiro Hamada , Yukihiko Sugio , Nobuyasu Suzuki , Yoshihisa Nagasaki
Abstract: A wavelength conversion device includes a substrate, a matrix supported by the substrate and containing inorganic material, a phosphor embedded in the matrix, and filler particles embedded in the matrix. A linear expansion coefficient of the filler particles is equal to or larger than 25 ppm/K and equal to or smaller than 790 ppm/K, and is larger than a linear expansion coefficient of the matrix. This wavelength conversion device suppresses warping of the substrate.
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公开(公告)号：US11130909B2
公开(公告)日：2021-09-28
申请号：US16635456
申请日：2018-08-07
Inventor： Takahiro Hamada , Yukihiko Sugio , Takashi Ohbayashi , Yoshihisa Nagasaki
Abstract: A wavelength conversion device of the present disclosure includes a substrate, a phosphor layer that has a matrix containing zinc oxide and phosphor particles embedded in the matrix and that is supported by the substrate, a dielectric layer disposed between the substrate and the phosphor layer, and a protective layer that is disposed between the phosphor layer and the dielectric layer and that has an isoelectric point equal to or larger than 7. A main surface of the substrate includes, for example, first and second regions. The phosphor layer covers, for example, only the first region out of the first and second regions.
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公开(公告)号：US11474423B2
公开(公告)日：2022-10-18
申请号：US17414401
申请日：2019-10-04
Inventor： Takahiro Hamada , Naoyuki Tani , Takashi Ohbayashi , Yoshihisa Nagasaki
Abstract: A wavelength conversion device includes a matrix containing inorganic material, a phosphor embedded in the matrix, and filler particles embedded in the matrix and containing resin material. This wavelength conversion device prevents the phosphor from falling.
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公开(公告)号：US10794569B2
公开(公告)日：2020-10-06
申请号：US16483874
申请日：2018-02-09
Inventor： Yoshihisa Nagasaki , Takashi Ohbayashi , Takahiro Hamada , Yukihiko Sugio , Yusuke Ogihara
IPC: F21V9/30 , F21S41/176 , F21S41/16 , F21Y115/30 , H01S5/022 , G02B5/20
Abstract: A wavelength conversion member of the present disclosure includes a first matrix, phosphor particles embedded in the first matrix, and at least one selected from the group consisting of first filler particles embedded in the first matrix and surface coating layers respectively covering surfaces of the phosphor particles. The wavelength conversion member satisfies at least one relationship selected from the group consisting of |n3−n1|>|n1−n2| and |n4−n1|>|n1−n2| wherein n1 is a refractive index of the first matrix, n2 is a refractive index of the phosphor particles, n3 is a refractive index of the first filler particles, and n4 is a refractive index of the surface coating layers.
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Patent Agency Ranking
公开(公告)号：US09785039B2
公开(公告)日：2017-10-10
申请号：US14832117
申请日：2015-08-21
Inventor： Atsushi Motoya , Kenta Watanabe , Ran Zheng , Sachiko Azuma , Yoshihisa Nagasaki , Takahiro Hamada , Mitsuru Nitta , Takashi Maniwa , Toshio Mori , Kazuhiro Matsuo
CPC classification number: G03B21/204 , G02B27/141 , G03B21/2066 , H01L2933/0041 , H01S5/0092
Abstract: A wavelength conversion member includes a substrate, a dichroic mirror layer, an SiO2 layer, a ZnO layer, and a phosphor layer, which are sequentially stacked from the substrate. The dichroic mirror layer reflects at least part of light incident from the above. The phosphor layer includes a plurality of phosphors and ZnO between the phosphors.
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公开(公告)号：US09551474B2
公开(公告)日：2017-01-24
申请号：US14645462
申请日：2015-03-12
Inventor： Nobuaki Nagao , Seigo Shiraishi , Yoshihisa Nagasaki , Nobuyasu Suzuki , Kazuhiko Yamanaka , Kiyoshi Morimoto , Takahiro Hamada
IPC: F21S4/00 , F21V3/00 , F21V5/00 , F21V21/30 , F21V9/00 , F21S8/10 , F21V29/70 , F21V29/89 , H01S5/00 , H01L33/50 , H01L33/64 , F21V9/16 , F21Y101/00
CPC classification number: F21V9/00 , F21K9/61 , F21K9/64 , F21S41/14 , F21S41/16 , F21S45/47 , F21V9/30 , F21V29/70 , F21V29/89 , F21Y2101/00 , F21Y2115/30 , H01L33/50 , H01L33/507 , H01L33/644 , H01S5/005
Abstract: A wavelength conversion member includes: a heat conducting layer; a sapphire substrate having a third surface directly contact with a second surface of the heat conducting layer and the fourth surface opposite to the third surface; and a phosphor layer having a fifth surface directly contact with the fourth surface and a sixth surface opposite to the fifth surface, the phosphor layer including phosphor. At least one of an area of a first surface and an area of the second surface of the heat conducting layer is at least 2800 times as large as an area of the sixth surface of the phosphor layer. At least one of an area of the third surface and an area of the fourth surface of the sapphire substrate is at least two times as large as the area of the sixth surface of the phosphor layer.
Abstract translation: 波长转换构件包括：导热层; 蓝宝石衬底，其具有与导热层的第二表面和与第三表面相对的第四表面直接接触的第三表面; 以及具有与第四表面直接接触的第五表面和与第五表面相对的第六表面的磷光体层，荧光体层包括磷光体。 导热层的第一表面区域和第二表面区域中的至少一个区域是荧光体层的第六表面的面积的至少2800倍。 第三表面的区域和蓝宝石衬底的第四表面的面积中的至少一个是荧光体层的第六表面的面积的至少两倍。
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公开(公告)号：US10208899B2
公开(公告)日：2019-02-19
申请号：US15200099
申请日：2016-07-01
Inventor： Kazuma Mima , Yoshihisa Nagasaki , Takahiro Hamada , Takashi Ohbayashi , Yukihiko Sugio
IPC: F21V9/30 , F21K9/64 , H01S5/00 , C09K11/02 , C09K11/77 , H05B33/20 , H05B33/22 , H01L33/50 , F21Y115/30 , H01L33/46 , H01S5/323
Abstract: A light source includes a semiconductor light emitting device; and a wavelength converter. The wavelength converter includes: a substrate; a phosphor layer disposed on the substrate; and a light reflective layer disposed on the substrate so as to surround the phosphor layer. The phosphor layer includes phosphor particles and a first matrix material in which the phosphor particles are dispersed. The light reflective layer includes inorganic compound particles and a second matrix material in which the inorganic compound particles are dispersed. The inorganic compound particles have a refractive index higher than that of the first matrix material. The first matrix material has a refractive index higher than that of the phosphor particles. The phosphor particles have a refractive index higher than that of the second matrix material.
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公开(公告)号：US10094529B2
公开(公告)日：2018-10-09
申请号：US15468183
申请日：2017-03-24
Inventor： Yoshihisa Nagasaki , Takahiro Hamada , Kazuma Mima , Yukihiko Sugio
IPC: F21S41/16 , F21S8/10 , F21S41/14 , B60Q1/04 , C09K11/02 , C09K11/77 , H01L33/00 , H01L33/32 , C09K11/62 , H01L33/50 , H01S5/00 , F21S41/25 , F21S45/47
Abstract: A wavelength conversion member, comprises: a substrate; a first wavelength conversion layer on the substrate, the first wavelength conversion layer containing a first phosphor and a first matrix; and a second wavelength conversion layer containing a second phosphor, first inorganic particles, and a second matrix. The first phosphor and the second phosphor convert at least part of the excitation light incident on the second main surface into first light having longer wavelengths than the excitation light. The first light is emitted from the second main surface of the second wavelength conversion layer. A volume Vp1 of the first phosphor, a volume Vw1 of the first wavelength conversion layer, a volume Vp2 of the second phosphor, and a volume Vw2 of the second wavelength conversion layer satisfy Vp1/Vw1>Vp2/Vw2.
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公开(公告)号：US10073320B2
公开(公告)日：2018-09-11
申请号：US15203614
申请日：2016-07-06
Inventor： Takahiro Hamada , Kazuma Mima , Yukihiko Sugio , Yoshihisa Nagasaki
CPC classification number: G02F1/3551 , F21K9/64 , F21S41/14 , F21S41/285 , G02F1/3619 , H01L33/501 , H01L2933/0041 , H01L2933/0075
Abstract: A wavelength converter comprises: phosphor particles; and a matrix that is located between the phosphor particles and comprises zinc oxide crystallites. Pores are included in at least one of the zinc oxide crystallites.
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