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公开(公告)号：US10093854B2
公开(公告)日：2018-10-09
申请号：US15106780
申请日：2014-12-22
Applicant: Denka Company Limited
Inventor： Hiroaki Toyoshima , Ryo Yoshimatsu
Abstract: The present invention relates to a complex oxynitride phosphor which is efficiently excited in the UV to near-UV wavelength region and emits green to yellow light, and a light emitting device using the phosphor. The phosphor according to the present invention is characterized in that it is represented by general formula: M1aM2bRecSidOeNf; wherein M1 is one or more elements selected from Y, Sc, La, and Al; M2 is one or more elements selected from Zn, Sr, Ba, Ca, and Mg; Re is one or more elements selected from Ce, Pr, Sm, Eu, Dy, Ho, Er, Tm, Yb, Ti, Cr, and Mn among rare-earth elements and transition metal elements; and a, b, c, d, e, and fin the formula satisfy the relationships: a+b+c=1, 0.20
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Patent Agency Ranking
公开(公告)号：US12256579B2
公开(公告)日：2025-03-18
申请号：US17621050
申请日：2020-06-18
Applicant: DENKA COMPANY LIMITED
Inventor： Hiroaki Toyoshima , Mitsuru Kawagoe
IPC: H10H20/851 , C09K11/62 , C09K11/63 , C09K11/64 , C09K11/77
Abstract: A phosphor in which at least some of an element M in a phosphor host crystal represented by Mα(L, A)βXγ is substituted with Eu as an activation material. M represents one or more (including at least Sr) of Mg, Ca, Sr, Ba, and Zn, L represents one or more of Li, Na, and K, A represents one or more of Al, Ga, B, In, Sc, Y, La, and Si, X represents one or more (except that X represents only N) of O, N, F, and Cl, α, β, γ, and δ satisfy 8.70≤α+β+γ+δ≤9.30, 0.00
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公开(公告)号：US11952520B2
公开(公告)日：2024-04-09
申请号：US18022278
申请日：2021-08-10
Applicant: DENKA COMPANY LIMITED
Inventor： Hiroki Banno , Hiroaki Toyoshima
CPC classification number: C09K11/592 , C09K11/0822 , C09K11/0883 , C09K11/55
Abstract: A method for manufacturing a phosphor powder of the present invention, in which the phosphor powder contains an inorganic compound in which Eu as an activator is solid-soluted in a crystal represented by Ba26Si51O2N84 or in an inorganic crystal having the same crystal structure as the crystal represented by Ba26Si51O2N84, the method including: a mixing step of mixing a raw material containing each element constituting the inorganic compound to obtain a raw material mixture blended such that b=51 and a/b>(26−c)/51 are satisfied when molar ratios of Ba, Si, and Eu in the raw material mixture are respectively a, b, and c; a firing step of firing the raw material mixture to obtain a fired product; and a cleaning treatment step of subjecting the fired product to an acid treatment and/or a water treatment.
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公开(公告)号：US12006459B2
公开(公告)日：2024-06-11
申请号：US18022279
申请日：2021-08-10
Applicant: DENKA COMPANY LIMITED
Inventor： Hiroki Banno , Hiroaki Toyoshima
CPC classification number: C09K11/77348 , F21V9/30
Abstract: A phosphor powder of the present invention is a phosphor powder which contains an inorganic compound in which Eu as an activator is solid-soluted in a crystal represented by Ba26Si51O2N84 or in an inorganic crystal having the same crystal structure as the crystal represented by Ba26Si51O2N84, and which is constituted such that in an emission spectrum obtained by irradiating the phosphor powder with excitation light having a wavelength of 450 nm, when a luminescence intensity at a peak wavelength in a range of equal to or more than 750 nm and equal to or less than 950 nm is P0, and when a luminescence intensity at a peak wavelength in a range of equal to or more than 520 nm and equal to or less than 600 nm is P1, 0.01≤P1/P0≤0.12 is satisfied by P0 and P1.
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公开(公告)号：US11279876B2
公开(公告)日：2022-03-22
申请号：US17040423
申请日：2019-03-14
Inventor： Hiroaki Toyoshima , Ryo Yoshimatsu , Taiyo Yamaura , Masato Akabane , Naoto Hirosaki
Abstract: A phosphor in which an element represented by Rδ is solid-solutionized in a phosphor host crystal represented by Mα(L, A)βXγ, wherein M is at least one type of element selected from Mg, Ca, Sr, Ba and Zn, L is at least one type of element selected from Li, Na and K, A is at least one type of element selected from Al, Ga, B, In, Sc, Y, La and Si, X is at least one type of element selected from O, N, F and Cl (where all of X being N is excluded), R is at least one type of element selected from Mn, Cr, Ti, Ce, Pr, Nd, Sm, Eu, Tb, Dy, Ho and Yb, α, β, γ and δ satisfy α+β+γ+δ=9, 0.00
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公开(公告)号：US20180163128A1
公开(公告)日：2018-06-14
申请号：US15106780
申请日：2014-12-22
Applicant: Denka Company Limited
Inventor： Hiroaki Toyoshima , Ryo Yoshimatsu
CPC classification number: C09K11/7734 , C09K11/0883 , C09K11/7792 , H01L33/502 , H01L33/504 , H01L33/507 , H05B33/14
Abstract: The present invention relates to a complex oxynitride phosphor which is efficiently excited in the UV to near-UV wavelength region and emits green to yellow light, and a light emitting device using the phosphor. The phosphor according to the present invention is characterized in that it is represented by general formula: M1aM2bRecSidOeNf; wherein M1 is one or more elements selected from Y, Sc, La, and Al; M2 is one or more elements selected from Zn, Sr, Ba, Ca, and Mg; Re is one or more elements selected from Ce, Pr, Sm, Eu, Dy, Ho, Er, Tm, Yb, Ti, Cr, and Mn among rare-earth elements and transition metal elements; and a, b, c, d, e, and fin the formula satisfy the relationships: a+b+c=1, 0.20
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