公开(公告)号：US20230313035A1

公开(公告)日：2023-10-05

申请号：US18022701

申请日：2021-08-16

Applicant: DENKA COMPANY LIMITED

Inventor： Masayoshi ICHIKAWA ,  Shunsuke MITANI

IPC: C09K11/61 ,  H01L33/50

CPC classification number: C09K11/616 ,  H01L33/502

Abstract: A fluoride phosphor, a composition of which is represented by General Formula (1), in which in a case where a cumulative 50% value is denoted by D50 and a cumulative 90% value is denoted by D90 in a volume-based particle size distribution curve obtained by a laser diffraction scattering method, D50 is 0.1 to 9.5 μm and D90 is 0.5 to 16 μm. General Formula (1): A2M(1-f)F6:Mn4+n In General Formula (1), an element A is one or more alkali metal elements including K, an element M is a Si simple substance, a Ge simple substance, or a combination of Si and one or more elements selected from the group consisting of Ge, Sn, Ti, Zr, and Hf, and 0

公开(公告)号：US20240400897A1

公开(公告)日：2024-12-05

申请号：US18688846

申请日：2022-06-29

Applicant: DENKA COMPANY LIMITED

Inventor： Shunsuke MITANI

IPC: C09K11/77 ,  H01L33/50

Abstract: According to an aspect of the present disclosure, there is provided a fluorescent substance powder containing a plurality of CASN-based fluorescent substance particles. Average circularity of fluorescent substance particles having a particle size of 1 μm or greater among the CASN-based fluorescent substance particles is 0.820 or greater, and a standard deviation of the circularity is less than 0.080.

公开(公告)号：US20240269968A1

公开(公告)日：2024-08-15

申请号：US18017784

申请日：2021-07-09

Applicant: DENKA COMPANY LIMITED

Inventor： Shunsuke MITANI ,  Keita KOBAYASHI

IPC: B32B27/08 ,  B32B37/10 ,  B32B38/00 ,  C09K11/02 ,  C09K11/64 ,  G03B21/20

CPC classification number: B32B27/08 ,  B32B37/10 ,  B32B38/0036 ,  C09K11/025 ,  C09K11/64 ,  B32B2038/0076 ,  B32B2307/422 ,  B32B2307/7376 ,  B32B2309/025 ,  G03B21/204

Abstract: Phosphor particles for producing a wavelength conversion member of a projector, including CASN, and/or SCASN. A cured sheet having a film thickness of 50±5 μm produced by using the particle satisfies the following optical characteristics: when an intensity at a peak wavelength of blue light emitted from a blue LED having a peak wavelength between 450 to 460 nm is defined as Ii [W/nm], and where the blue light is emitted to one surface side of the cured sheet, when an intensity of light emitted from the other surface side of the cured sheet at a peak wavelength between 450 to 460 nm is defined as It [W/nm] and an intensity thereof at a peak wavelength between 600 to 650 nm is defined as Ip [W/nm], It/Ii is equal to or less than 0.2 and Ip/Ii is equal to or more than 0.05.

公开(公告)号：US20230279289A1

公开(公告)日：2023-09-07

申请号：US18017807

申请日：2021-07-09

Applicant: DENKA COMPANY LIMITED

Inventor： Shunsuke MITANI ,  Keita KOBAYASHI

IPC: C09K11/02 ,  C09K11/77 ,  C08J3/21 ,  C08J5/18 ,  C08K3/34

CPC classification number: C09K11/02 ,  C09K11/77348 ,  C08J3/212 ,  C08J5/18 ,  C08K3/34 ,  C08J2383/04 ,  C08K2201/005

Abstract: Phosphor particles for producing a wavelength conversion member of a projector, including β-type sialon. A cured sheet having a film thickness of 50±5 μm produced by using the particle satisfies the following optical characteristics: when an intensity at a peak wavelength of blue light emitted from a blue LED having a peak wavelength between 450 to 460 nm is defined as Ii [W/nm], and in a case where the blue light is emitted to one surface side of the cured sheet, when an intensity of light emitted from the other surface side of the cured sheet at a peak wavelength between 450 to 460 nm is defined as It [W/nm] and an intensity thereof at a peak wavelength between 500 to 560 nm is defined as Ip [W/nm], It/Ii is equal to or less than 0.50 and Ip/Ii is equal to or more than 0.03.

公开(公告)号：US20240368466A1

公开(公告)日：2024-11-07

申请号：US18689133

申请日：2022-06-29

Applicant: DENKA COMPANY LIMITED

Inventor： Shunsuke MITANI

IPC: C09K11/59 ,  H01L33/50

Abstract: According to an aspect of the present disclosure, there is provided a fluorescent substance powder containing a plurality of CASN-based fluorescent substance particles. Average ruggedness of fluorescent substance particles having a particle size of 1 μm or greater among the CASN-based fluorescent substance particles is 0.985 or greater.

公开(公告)号：US20240002719A1

公开(公告)日：2024-01-04

申请号：US18039684

申请日：2021-11-04

Applicant: DENKA COMPANY LIMITED

Inventor： Shunsuke MITANI ,  Keita KOBAYASHI

IPC: C09K11/64 ,  C09K11/59 ,  C09K11/55 ,  C09K11/08 ,  H01L33/50

CPC classification number: C09K11/64 ,  C09K11/59 ,  C09K11/55 ,  C09K11/0883 ,  H01L33/50 ,  C09K2211/10

Abstract: Phosphor particles are composed of one or two selected from a powdery phosphor formed of CASN and SCASN, wherein a particle size corresponding to a cumulative 50% is Dx50 and to a cumulative 90% is Dx90 in a volume-based integrated fraction of the phosphor particles, and where a particle size corresponding to a cumulative 50% is Dy50 and to a cumulative 90% is Dy90 after subjecting the particles to treatment, (a) Dx50 is between 0.5 μm and 35 μm, and (b) Dx90/Dy90 is between 0.7 and 15. The treatment; a dispersion liquid wherein 30 mg of the particles are uniformly dispersed in an aqueous solution of sodium hexametaphosphate having a concentration of 0.2% and put into a cylindrical container A vibrator part of an ultrasonic homogenizer is inserted and the liquid is irradiated with ultrasonic waves at a frequency of 19.5 kHz and an output of 150 W for 3 minutes.

公开(公告)号：US20210189234A1

公开(公告)日：2021-06-24

申请号：US17272827

申请日：2019-08-22

Applicant: DENKA COMPANY LIMITED

Inventor： Keita KOBAYASHI ,  Shunsuke MITANI ,  Ryousuke KONDO ,  Kazuya SUGITA ,  Takuya MATSUFUJI ,  Akihisa KAJIYAMA

IPC: C09K11/77 ,  C09K11/08

Abstract: A β-type sialon phosphor represented by the following expression 1, in which D50 is 10 μm or less, and values of D10, D50, and D90 satisfy a relationship of the following expression 2 with respect to D10, D50, and D90 (each unit is [μm]) on a volume frequency basis as measured according to a laser diffraction/scattering method. Expression 1: Si12-aAlaObN16-b:Eux (wherein 0

公开(公告)号：US20190071602A1

公开(公告)日：2019-03-07

申请号：US16111460

申请日：2018-08-24

Applicant: DENKA COMPANY LIMITED

Inventor： Shunsuke MITANI ,  Masayoshi ICHIKAWA

IPC: C09K11/61 ,  H01L33/50

Abstract: Provided is a fluoride phosphor having a composition represented by the general formula (1): A2SiF6:Mn4+  (1) in which A represents at least one alkali metal comprising at least K. The fluoride phosphor has a ratio (A1/A2) of an area (A1) of a spectrum in a range of from 645 eV or more to less than 651 eV in XPS measurement to an area (A2) of a spectrum in a range of from 682.8 eV or more to less than 690 eV in XPS measurement, of 0.0005 to 0.0010.

公开(公告)号：US20190062630A1

公开(公告)日：2019-02-28

申请号：US16112952

申请日：2018-08-27

Applicant: DENKA COMPANY LIMITED

Inventor： Shunsuke MITANI ,  Masayoshi ICHIKAWA

IPC: C09K11/61 ,  H01L33/50

CPC classification number: C09K11/617 ,  H01L33/502

Abstract: Provided is a fluoride phosphor having a composition represented by the general formula (1): A2SiF6:Mn4+  (1) in which A represents at least one alkali metal comprising at least K. The fluoride phosphor has a ratio (A1/A2) of an area (A1) of a spectrum in a range of from 637 eV or more to less than 645 eV in XPS measurement to an area (A2) of a spectrum in a range of from 682.8 eV or more to less than 690 eV in XPS measurement, of 0.0008 to 0.0025.