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公开(公告)号：US11131914B2
公开(公告)日：2021-09-28
申请号：US16488578
申请日：2018-02-26
Inventor： Tatsuya Okuno , Masahiro Nakamura , Youshin Lee
Abstract: A wavelength conversion member includes: a substrate; a wavelength converter including phosphor particles excited by excitation light and a binder layer that fixes or adheres the adjacent phosphor particles to one another, the wavelength converter being provided on a front surface side of the substrate; and a light reflecting film that reflects fluorescent light radiated by the phosphor particles, the light reflecting film being provided on at least a part of an interface between the substrate and the wavelength converter, wherein a refractive index of the phosphor particles is larger than a refractive index of the binder layer. It is preferable that the binder layer include nanogaps which are voids with an average diameter of 300 nm or less in an inside.
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公开(公告)号：US20250105271A1
公开(公告)日：2025-03-27
申请号：US18724805
申请日：2022-10-31
Inventor： Youshin Lee , Mitsuhiro Hibino , Kensuke Nakura
IPC: H01M4/505 , H01M4/02 , H01M4/04 , H01M4/525 , H01M10/0525
Abstract: A positive electrode for secondary batteries according to the present invention comprises a positive electrode collector and a positive electrode mixture layer that is arranged on the positive electrode collector, and is characterized in that: the positive electrode mixture layer comprises a positive electrode active material that contains a lithium-containing composite oxide that is composed of secondary particles, each of which is formed of aggregated primary particles; a coating film that contains elemental Nb is formed on the surface of each primary particle of the lithium-containing composite oxide; and the Gini coefficient of elemental Nb as calculated from an element mapping image that is obtained by time-of-flight secondary ion mass spectrometry (TOF-SIMS) of a cross-section of the secondary particles is 0.5 or less.
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公开(公告)号：US10355175B2
公开(公告)日：2019-07-16
申请号：US16071906
申请日：2017-01-31
Inventor： Youshin Lee , Shozo Oshio , Tatsuya Okuno , Takeshi Abe , Masahiro Nakamura
IPC: H01J1/62 , H01L33/50 , C09K11/08 , F21S2/00 , G02B5/20 , H01S5/022 , F21V9/30 , H01L33/16 , H01L33/58
Abstract: A light emitting device 1 includes: a substrate 30; and a phosphor layer 40 composed in such a manner that a large number of phosphor particles 60 are adhered onto a flat surface 32 of the substrate 30. At least one of the phosphor particles 60 is a polyhedral phosphor particle 65 that is monodispersed, is derived from a crystal structure of garnet and has facets, and a median particle size D50 of the polyhedral phosphor particle 65 is 30 μm or more and a maximum thickness of the phosphor layer 40 or less. It is preferable that at least one of the phosphor particles 60 adhered onto the flat surface 32 of the substrate 30 is the polyhedral phosphor particle 65 that is monodispersed, is derived from the crystal structure of the garnet, and has the facets.
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Patent Agency Ranking
公开(公告)号：US20250105274A1
公开(公告)日：2025-03-27
申请号：US18724795
申请日：2022-10-31
Inventor： Youshin Lee , Mitsuhiro Hibino , Kensuke Nakura
IPC: H01M4/525 , H01M4/02 , H01M4/04 , H01M10/0525
Abstract: This positive electrode comprises a positive electrode current collector, and a positive electrode mixture layer disposed on the positive electrode current collector, wherein: the positive electrode mixture layer has a positive electrode active material containing a lithium-containing composite oxide composed of secondary particles in which primary particles are aggregated; the lithium-containing composite oxide has a Nb element; the average particle diameter of the primary particles is 1 μm or less; and in a depth profile obtained by time-of-flight secondary ion mass spectrometry (TOF-SIMS) of a cross-section of the positive electrode mixture layer, when the minimum ionic strength of Nb in the region from the surface of the positive electrode mixture layer to 500 nm in the thickness direction is Imin and the maximum ionic strength of Nb in a region from 500 nm to 1000 nm in the thickness direction is Imax, Imax/Imin is at least 1.5.
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公开(公告)号：US20230053476A1
公开(公告)日：2023-02-23
申请号：US17800357
申请日：2021-02-10
Inventor： Youshin Lee , Ryuichi Natsui , Mitsuhiro Hibino , Kensuke Nakura
IPC: H01M4/525 , H01M4/505 , H01M4/485 , H01M10/0525 , H01M50/46
Abstract: This positive-electrode active material for a non-aqueous electrolyte secondary battery contains a lithium and transition metal composite oxide represented by the composition formula: LixMnyNixGeaMbO2-cFc (where, M is at least one elements selected from Ti, Co, Si, Al, Nb, W, Mo, P, Ca, Mg, Sb, Na, B, V, Cr, Fe, Cu, Zn, Sr, Zr, Ru, K, and Bi; 1.0
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公开(公告)号：US12230795B2
公开(公告)日：2025-02-18
申请号：US17475461
申请日：2021-09-15
Inventor： Mitsuhiro Hibino , Youshin Lee
Abstract: A positive-electrode active material for a magnesium secondary battery contains a composite oxide represented by the following composition formula: M1xM2yO2, where M1 is sodium, M2 is nickel and manganese, and 0
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公开(公告)号：US20230082835A1
公开(公告)日：2023-03-16
申请号：US17800359
申请日：2021-01-21
Inventor： Youshin Lee , Ryuichi Natsui , Mitsuhiro Hibino , Kensuke Nakura
Abstract: This positive-electrode active material for a non-aqueous electrolyte secondary battery contains a lithium and transition metal composite oxide represented by the composition formula: LixMnyNizSraMbO2-cFc (where, M is at least two elements selected from Ti, Co, Si, Al, Nb, W, Mo, P, Ca, Mg, Sb, Na, B, V, Cr, Fe, Cu, Zn, Ge, Zr, Ru, K, and Bi; 1.0
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公开(公告)号：US10651348B2
公开(公告)日：2020-05-12
申请号：US16427243
申请日：2019-05-30
Inventor： Youshin Lee , Shozo Oshio , Tatsuya Okuno , Takeshi Abe , Masahiro Nakamura
IPC: H01J1/62 , H01L33/50 , C09K11/08 , F21S2/00 , G02B5/20 , H01S5/022 , F21V9/30 , H01L33/16 , H01L33/58
Abstract: A light emitting device 1 includes: a substrate 30; and a phosphor layer 40 composed in such a manner that a large number of phosphor particles 60 are adhered onto a flat surface 32 of the substrate 30. At least one of the phosphor particles 60 is a polyhedral phosphor particle 65 that is monodispersed, is derived from a crystal structure of garnet and has facets, and a median particle size D50 of the polyhedral phosphor particle 65 is 30 μm or more and a maximum thickness of the phosphor layer 40 or less. It is preferable that at least one of the phosphor particles 60 adhered onto the flat surface 32 of the substrate 30 is the polyhedral phosphor particle 65 that is monodispersed, is derived from the crystal structure of the garnet, and has the facets.
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