公开(公告)号：US20230113551A1

公开(公告)日：2023-04-13

申请号：US17909659

申请日：2021-02-01

Applicant: DENKA COMPANY LIMITED

Inventor： Kazuya SUGITA ,  Taiyo YAMAURA ,  Tomohiro NOMIYAMA

IPC: H01L33/50 ,  C09K11/08

Abstract: A phosphor plate includes a plate-like composite including an inorganic base material, which is a sintered material of two or more types of metal oxide including SiO2, and a phosphor contained in the inorganic base material, in which the phosphor includes an α-type sialon phosphor, and in a case in which intensity of transmitted light at a wavelength of 455 nm and intensity of reflected light at a wavelength of 455 nm of the phosphor plate are denoted by T1 and R1, respectively, T1 and R1 satisfy 1.5×10−2≤T1/R1≤5.0×10−2.

公开(公告)号：US20220399480A1

公开(公告)日：2022-12-15

申请号：US17769902

申请日：2020-10-07

Applicant: DENKA COMPANY LIMITED

Inventor： Taiyo YAMAURA ,  Yuki KUBOTA ,  Kazuhiro ITO ,  Hideyuki EMOTO

IPC: H01L33/50 ,  C09K11/67

Abstract: A phosphor plate including: a complex containing an α-sialon phosphor and a sintered body containing spinel represented by a general formula M2xAl4-4xO6-4x (where M represents at least one of Mg, Mn, and Zn, and 0.2

公开(公告)号：US20220145177A1

公开(公告)日：2022-05-12

申请号：US17598686

申请日：2020-03-24

Applicant: DENKA COMPANY LIMITED

Inventor： Tomohiro NOMIYAMA ,  Yusuke TAKEDA ,  Taiyo YAMAURA ,  Tatsuya OKUZONO ,  Masaru MIYAZAKI ,  Shintaro WATANABE

IPC: C09K11/77 ,  H01L33/50

Abstract: A phosphor powder composed of α-sialon phosphor particles containing Eu. In a case where an internal quantum efficiency after the phosphor powder is held at 600° C. for 1 hour in an air atmosphere is defined as P1 and an internal quantum efficiency after the phosphor powder is held at 700° C. for 1 hour in an air atmosphere is defined as P2, P1 is equal to or more than 70% and (P1−P2)/P1×100 is equal to or less than 2.8%.

公开(公告)号：US20230053528A1

公开(公告)日：2023-02-23

申请号：US17796602

申请日：2021-01-28

Applicant: DENKA COMPANY LIMITED

Inventor： Yuki KUBOTA ,  Taiyo YAMAURA ,  Kazuhiro ITO

IPC: C09K11/02 ,  H01L33/50 ,  C09K11/77 ,  C04B35/117 ,  C04B35/443

Abstract: A phosphor plate includes a plate-like composite including a base material and an α-type sialon phosphor present in the base material, in which, in an X-ray diffraction analysis pattern using a Cu-Kα ray, in a case in which peak intensity corresponding to the α-type sialon phosphor having a diffraction angle 2 θ in a range of 30.2° or more and 30.4° or less is defined as Iα and peak intensity of a peak having a diffraction angle 2 θ in a range of 26.6° or more and 26.8° or less is defined as Iβ, Iα, and Iβ satisfy 0

公开(公告)号：US20220251444A1

公开(公告)日：2022-08-11

申请号：US17622259

申请日：2020-06-22

Applicant: DENKA COMPANY LIMITED

Inventor： Taiyo YAMAURA ,  Yuki KUBOTA ,  Kazuhiro ITO ,  Hideyuki EMOTO

IPC: C09K11/77 ,  H01L33/50

Abstract: A phosphor plate including a base material, and a plate-shaped composite including phosphors dispersed in the base material, in which a main component of the base material is alumina, the phosphor includes an α-type sialon phosphor, and L* value satisfies 73.5 or more and 85.0 or less, a* value satisfies 4.4 or more and 8.0 or less, and b* value satisfies 10.8 or more and 13.0 or less in L*a*b* color coordinates of the phosphor plate in a case of being measured in accordance with JIS Z 8781-4.

公开(公告)号：US20240145640A1

公开(公告)日：2024-05-02

申请号：US18280418

申请日：2022-02-21

Applicant: DENKA COMPANY LIMITED

Inventor： Yuki KUBOTA ,  Taiyo YAMAURA ,  Kazuhiro ITO

IPC: H01L33/50 ,  C09K11/02 ,  C09K11/77

CPC classification number: H01L33/502 ,  C09K11/02 ,  C09K11/77348 ,  H01L33/505

Abstract: A phosphor plate according to the present invention is a phosphor plate including: a plate-like composite including a base material and a phosphor dispersed in the base material, in which both Ry1 and Ry2 are 5.00 μm or less, where Ry1 is a maximum height on a front surface of the phosphor plate and Ry2 is a maximum height on a back surface.

公开(公告)号：US20220350061A1

公开(公告)日：2022-11-03

申请号：US17621105

申请日：2020-06-22

Applicant: DENKA COMPANY LIMITED

Inventor： Taiyo YAMAURA ,  Yuki KUBOTA ,  Kazuhiro ITO ,  Hideyuki EMOTO

IPC: G02B5/20 ,  H01L33/50 ,  C09K11/77 ,  C01B21/06

Abstract: A phosphor plate including a base material, and a plate-shaped composite including phosphors dispersed in the base material, in which in a case in which an absorption spectrum of light having a wavelength of 300 nm to 700 nm is measured, when an absorbance at 455 nm is defined as A455(%), an absorbance at 700 nm is defined as A700(%), and a thickness of the phosphor plate is defined as T (mm), (A700/A455)/T satisfies 0.01 or more and 1.00 or less.

公开(公告)号：US20210017448A1

公开(公告)日：2021-01-21

申请号：US17040423

申请日：2019-03-14

Applicant: DENKA COMPANY LIMITED ,  NATIONAL INSTITUTE FOR MATERIALS SCIENCE

Inventor： Hiroaki TOYOSHIMA ,  Ryo YOSHIMATSU ,  Taiyo YAMAURA ,  Masato AKABANE ,  Naoto HIROSAKI

IPC: C09K11/77 ,  C01F11/02 ,  C09K11/08 ,  H01L33/50

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