公开(公告)号：US11965123B2

公开(公告)日：2024-04-23

申请号：US17442653

申请日：2020-03-19

Applicant: STELLA CHEMIFA CORPORATION

Inventor： Hiroaki Takatori ,  Shinya Kumazawa ,  Tetsuya Arakawa ,  Tetsuo Nishida

IPC: C09K11/61 ,  C01B33/10 ,  C09K11/02

CPC classification number: C09K11/617 ,  C01B33/103 ,  C09K11/025 ,  C01P2002/54 ,  C01P2004/80

Abstract: A red phosphor that has optical characteristics and durability under high-temperature and high-humidity environments, and a method for producing the same. The red phosphor includes a Mn-activated complex fluoride represented by the following general formula (1) and bismuth:

A2MF6:Mn4+  (1)

wherein A represents at least one alkali metal element selected from the group consisting of lithium, sodium, potassium, rubidium and cesium, and M represents at least one tetravalent element selected from the group consisting of silicon, germanium, tin, titanium, zirconium and hafnium.

公开(公告)号：US20240376379A1

公开(公告)日：2024-11-14

申请号：US18691203

申请日：2022-08-10

Applicant: STELLA CHEMIFA CORPORATION

Inventor： Kenta Horigami ,  Hiroaki Takatori ,  Shinya Kumazawa ,  Kazutaka Hirano ,  Tetsuya Arakawa ,  Tetsuo Nishida ,  Yusuke Kitahara

IPC: C09K11/61 ,  C09K11/02

Abstract: A red phosphor excellent in optical characteristics and durability in a high-temperature and high-humidity environment and a method for producing the same are provided. The red phosphor according to the present invention includes: a Mn-activated composite fluoride represented by a general formula (1); and a perovskite compound represented by a general formula (2): L2MF6:Mn4+ (1) where L represents at least one alkali metal element selected from a group consisting of sodium, potassium, etc., and M represents at least one tetravalent element selected from a group consisting of silicon, germanium, etc.; and ABX3 (2) where A represents at least one selected from a group consisting of sodium, potassium, etc., B represents at least one element selected from a group consisting of magnesium, calcium, etc., and X represents at least one element selected from a group consisting of fluorine, chlorine, bromine, iodine, and sulfur.

公开(公告)号：US20150072134A1

公开(公告)日：2015-03-12

申请号：US14390236

申请日：2013-05-27

Applicant: STELLA CHEMIFA CORPORATION

Inventor： Tatsuhiro Yabune ,  Megumi Tomisaki ,  Masanori Uraya ,  Hiroaki Takatori

IPC: C01F5/28 ,  G02B1/11 ,  C09D1/00

CPC classification number: C01F5/28 ,  C01B33/107 ,  C01P2004/04 ,  C01P2004/51 ,  C01P2004/64 ,  C01P2006/12 ,  C01P2006/60 ,  C09D1/00 ,  G02B1/002 ,  G02B1/113 ,  G02B2207/107 ,  Y10T428/249974 ,  Y10T428/2982

Abstract: Magnesium fluoride particles with a low refractive index excellent in film formability are provided. The magnesium fluoride particles each include at least one magnesium fluoride particulate. The at least one magnesium fluoride particulate each has pores that support a supported substance. Further, the at least one magnesium fluoride particulate includes a plurality of particulates. A grain boundary void-like pore serving as a gap that supports the supported substance is present between particulates adjacent to each other of the plurality of particulates.

Abstract translation: 提供具有优异成膜性的低折射率的氟化镁颗粒。 氟化镁颗粒各自包含至少一种氟化镁颗粒。 至少一种氟化镁颗粒各自具有支撑负载物质的孔。 此外，所述至少一种氟化镁颗粒包括多个微粒。 用作支撑物质的间隙的晶界空隙样孔存在于多个微粒彼此相邻的微粒之间。