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公开(公告)号：US11414596B2
公开(公告)日：2022-08-16
申请号：US16852388
申请日：2020-04-17
Applicant: NICHIA CORPORATION
Inventor： Tomokazu Yoshida
Abstract: Provided is a fluoride fluorescent material having high luminance.
The fluoride fluorescent material has a composition containing Mn, A that is at least one element or ion selected from the group consisting of alkali metal elements and NH4+, at least one element M selected from the group consisting of Group-4 elements and Group-14 elements, and F; and contains spherical fluoride particles.-
公开(公告)号：US11028320B2
公开(公告)日：2021-06-08
申请号：US16233545
申请日：2018-12-27
Applicant: NICHIA CORPORATION
Inventor： Tomokazu Yoshida , Kazuya Nishimata , Shoji Hosokawa
Abstract: Provided is an aluminate fluorescent material having a high emission intensity and having a composition containing a first element that contains one or more of Ba and Sr, and a second element that contains Mg and Mn. In the composition, when a molar ratio of Al is 10, a total molar ratio of the first element is a parameter a, a total molar ratio of the second element is a parameter b, a molar ratio of Sr is a product of a parameter m and the parameter a, a molar ratio of Mn is a product of a parameter n and the parameter b. The parameters a and b satisfy 0.5
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公开(公告)号：US10030196B2
公开(公告)日：2018-07-24
申请号：US15482965
申请日：2017-04-10
Applicant: NICHIA CORPORATION
Inventor： Tomokazu Yoshida
Abstract: The present invention provides a method for producing a fluoride fluorescent material, comprising: contacting a fluoride particles represented by the following general formula (I): K2[M1−aMn4+aF6] (I) wherein M is at least one member selected from the group consisting of elements belonging to Groups 4 and 14 of the Periodic Table, and a satisfies the relationship: 0
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公开(公告)号：US09650563B2
公开(公告)日：2017-05-16
申请号：US14469816
申请日：2014-08-27
Applicant: NICHIA CORPORATION
Inventor： Tomokazu Yoshida
CPC classification number: C09K11/616 , C09K11/025 , C09K11/675 , H01L33/502 , H01L33/507 , H01L33/56 , H01L33/62 , H01L2224/48091 , H01L2224/48247 , H01L2224/48257 , H01L2224/73265 , H01L2924/181 , H01L2924/00014 , H01L2924/00012
Abstract: The present invention provides a method for producing a fluoride fluorescent material, comprising: contacting a fluoride particles represented by the following general formula (I): K2[M1-aMn4+aF6] (I) wherein M is at least one member selected from the group consisting of elements belonging to Groups 4 and 14 of the Periodic Table, and a satisfies the relationship: 0
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公开(公告)号：US09222017B2
公开(公告)日：2015-12-29
申请号：US14804337
申请日：2015-07-21
Applicant: NICHIA CORPORATION
Inventor： Tomokazu Yoshida
CPC classification number: C09K11/617 , C09K11/025 , C09K11/675 , G02F1/133603 , H01L33/06 , H01L33/502 , H01L33/54 , H01L2224/48091 , H01L2224/48247 , H01L2224/48257 , H01L2224/73265 , H01L2924/181 , H05B33/14 , H01L2924/00014 , H01L2924/00012
Abstract: A method of manufacturing a fluoride phosphor includes mixing a first solution which contains at least Mn and F, a second solution which contains at least K and F, and a third solution which contains at least Si and F to form phosphor cores whose composition is represented by a formula K2[M1-aMn4+aF6] wherein a satisfies 0
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Patent Agency Ranking
公开(公告)号：US11643595B2
公开(公告)日：2023-05-09
申请号：US17807851
申请日：2022-06-20
Applicant: NICHIA CORPORATION
Inventor： Yuki Shiota , Keisho Yamashita , Shoji Hosokawa , Tomokazu Yoshida , Yohei Yamauchi , Naoto Kijima
IPC: H01L51/00 , F21V9/30 , F21V8/00 , F21Y115/10 , C09K11/02 , C09K11/06 , B32B27/36 , B32B27/30 , B32B27/08 , B32B3/12 , C09K11/61
CPC classification number: C09K11/025 , B32B3/12 , B32B27/08 , B32B27/308 , B32B27/36 , B32B27/365 , C09K11/06 , C09K11/617 , F21V9/30 , G02B6/0073 , H01L51/0077 , B32B2255/10 , B32B2255/20 , B32B2307/414 , B32B2307/42 , B32B2307/7246 , B32B2307/732 , B32B2457/20 , C09K2211/10 , C09K2211/188 , F21Y2115/10
Abstract: A wavelength conversion member including a wavelength conversion layer containing a fluoride phosphor, quantum dots, a surfactant, and a resin. The fluoride phosphor contains fluoride particles having a specific composition and having particle size values within specific ranges. The quantum dots include at least one selected from a first crystalline nanoparticle and a second crystalline nanoparticle. The first crystalline nanoparticle has a specific composition. When irradiated with light having a wavelength of 450 nm, the first crystalline nanoparticle emits light having an emission peak at a wavelength in a range from 510 nm to 535 nm, and a full width at half maximum of the emission peak of the first crystalline nanoparticle is in a range from 10 nm to 30 nm. The second crystalline nanoparticle includes a chalcopyrite-type crystalline structure, and a full width at half maximum of the emission peak of the second crystalline nanoparticle is 45 nm or less.
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公开(公告)号：US11572506B2
公开(公告)日：2023-02-07
申请号：US16719051
申请日：2019-12-18
Applicant: NICHIA CORPORATION
Inventor： Tomokazu Yoshida
Abstract: A method for producing a fluoride fluorescent material comprises: preparing fluoride particles having a composition containing at least one element or ion A selected from the group consisting of alkaline metal elements and NH4+, at least one element M selected from the group consisting of Group-4 elements and Group-14 elements, Mn4+, and F, in which a molar ratio of A in 1 mol of the composition is 2, a total molar ratio of M and Mn4+ is 1, a molar ratio of Mn4+ is in a range of more than 0 and less than 0.2, and a molar ratio of F is 6; subjecting the fluoride particles to a first heat treatment at a temperature of 500° C. or more in an inert gas atmosphere; washing the first heat-treated fluoride particles with a washing liquid; and bringing the washed fluoride particles into contact with a fluorine-containing substance and subjecting the resulting fluoride particles to a second heat treatment at a temperature of 400° C. or more.
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公开(公告)号：US11041118B2
公开(公告)日：2021-06-22
申请号：US15860150
申请日：2018-01-02
Applicant: NICHIA CORPORATION
Inventor： Tomokazu Yoshida
Abstract: The present invention provides a method for producing a fluoride fluorescent material, comprising: contacting a fluoride particles represented by the following general formula (I): K2[M1−aMn4+aF6] (I) wherein M is at least one member selected from the group consisting of elements belonging to Groups 4 and 14 of the Periodic Table, and a satisfies the relationship: 0
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公开(公告)号：US10214688B2
公开(公告)日：2019-02-26
申请号：US15375619
申请日：2016-12-12
Applicant: NICHIA CORPORATION
Inventor： Tomokazu Yoshida , Suguru Takashima
Abstract: The present invention provides a method for producing a fluoride fluorescent material comprising a chemical composition represented by the following formula (I): K2[M1−aMn4+aF6] (I) wherein M is at least one element selected from the group consisting of elements belonging to Groups 4 and 14 of the Periodic Table, and a is a value that satisfies the relationship: 0
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10.发明申请公开(公告)号：US20180142142A1
公开(公告)日：2018-05-24
申请号：US15860150
申请日：2018-01-02
Applicant: NICHIA CORPORATION
Inventor： Tomokazu Yoshida
CPC classification number: C09K11/025 , C09K11/675 , H01L2224/48091 , H01L2224/48247 , H01L2224/48257 , H01L2224/73265 , H01L2924/00012 , H01L2924/00014 , H01L2924/181
Abstract: The present invention provides a method for producing a fluoride fluorescent material, comprising: contacting a fluoride particles represented by the following general formula (I): K2[M1−aMn4+aF6] (I) wherein M is at least one member selected from the group consisting of elements belonging to Groups 4 and 14 of the Periodic Table, and a satisfies the relationship: 0
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