公开(公告)号：US20220356074A1

公开(公告)日：2022-11-10

申请号：US17623521

申请日：2020-08-04

Applicant: DENKA COMPANY LIMITED

Inventor： Masayoshi ICHIKAWA ,  Motoi TANAKA ,  Kazuhiro ITOH

IPC: C01G45/06 ,  C09K11/57 ,  C09K11/61

Abstract: A potassium hexafluoromanganate is represented by General Formula: K2MnF6, and a diffuse reflectance with respect to light having a wavelength of 310 nm is 20% or more.

公开(公告)号：US20180086973A1

公开(公告)日：2018-03-29

申请号：US15544679

申请日：2016-01-19

Applicant: Denka Company Limited

Inventor： Ryosuke KONDO ,  Masayoshi ICHIKAWA ,  Hideyuki EMOTO ,  Motoi TANAKA

IPC: C09K11/02 ,  C09K11/61 ,  H01L33/50

CPC classification number: C09K11/025 ,  C09K11/617 ,  H01L33/502

Abstract: Provided is a phosphor that emits red light, is represented by the general formula, A2MF6:Mn, and exhibits little reduction in intensity even when exposed to a high-temperature, high-humidity atmosphere over a long period of time. Also provided is a light-emitting device using said phosphor. The present invention is a phosphor in which the main crystal phase thereof is represented by the general formula, A2MF6:Mn. The element A is an alkali metal element including at least K, and the element M is one or more tetravalent elements selected from the group consisting of Si, Ge, Sn, Ti, Zr, and Hf. The phosphor has a coating layer on the surface thereof. The coating layer is a hydrophobic organic substance having a hydrophobicity of 10% or more.

公开(公告)号：US20220348478A1

公开(公告)日：2022-11-03

申请号：US17623447

申请日：2020-08-04

Applicant: DENKA COMPANY LIMITED

Inventor： Masayoshi ICHIKAWA ,  Motoi TANAKA ,  Kazuhiro ITOH

IPC: C01G45/00 ,  C09K11/61

Abstract: A potassium hexafluoromanganate is represented by General Formula: K2MnF6, and a diffuse reflectance with respect to light having a wavelength of 550 nm is 60% or more.

公开(公告)号：US20210130689A1

公开(公告)日：2021-05-06

申请号：US17041920

申请日：2019-03-14

Applicant: DENKA COMPANY LIMITED

Inventor： Masato AKABANE ,  Ryo YOSHIMATU ,  Hiroaki TOYOSHIMA ,  Motoi TANAKA

IPC: C09K11/77 ,  C09K11/08 ,  C01B21/082 ,  H01L33/50

Abstract: A phosphor including a fired product having a composition represented by general formula M1aM2bM3cAl3N4-dOd, wherein M1 is one or more elements selected from Sr, Mg, Ca, and Ba, M2 is one or more elements selected from Li, Na, and K, and M3 is one or more elements selected from Eu, Ce, and Mn, and wherein a, b, c, and d satisfy each of the following formulas: 0.850≤a≤1.150, 0.850≤b≤1.150, 0.001≤c≤0.010, 0.10

公开(公告)号：US20180072946A1

公开(公告)日：2018-03-15

申请号：US15546400

申请日：2016-01-27

Applicant: Denka Company Limited

Inventor： Hideyuki EMOTO ,  Motoi TANAKA ,  Kazuhiro ITO

IPC: C09K11/61 ,  C09K11/55 ,  C09K11/66 ,  G02B5/00 ,  H01L33/50 ,  C09K11/67

CPC classification number: C09K11/61 ,  C09K11/55 ,  C09K11/57 ,  C09K11/616 ,  C09K11/617 ,  C09K11/66 ,  C09K11/677 ,  G02B5/003 ,  H01L33/50

Abstract: Provided is a phosphor represented by the general formula: A2MF6:Mn. The elements A each represents an alkali metal element, the element M represents one or more tetravalent metallic elements selected from Si, Ge, Sn, Ti, Zr and Hf. The phosphor has a minimal light absorption rate in a wavelength range of 300 nm or more and 350 nm or less of 67% or less, and a maximum light absorption rate in a wavelength range of 400 nm or more and 500 nm or less of 65% or more. The phosphor has a Mn content of 0.3% by mass or more and 1.5% by mass or less.