公开(公告)号：US10711186B2

公开(公告)日：2020-07-14

申请号：US15659738

申请日：2017-07-26

申请人： Kabushiki Kaisha Toshiba ,  TOSHIBA MATERIALS CO., LTD.

发明人： Ryosuke Hiramatsu ,  Keiko Albessard ,  Kunio Ishida ,  Yasushi Hattori ,  Masahiro Kato

IPC分类号： C09K11/59 ,  C09K11/77 ,  H01L33/50 ,  C09K11/61

摘要： Embodiments of the present invention provide a phosphor improved in the emission intensity maintenance ratio without impairing the emission intensity and further a light-emitting device employing that phosphor. The phosphor is activated by manganese and has a basic structure comprising at least one element selected from the group consisting of potassium, sodium and calcium; at least one element selected from the group consisting of silicon and titanium; and fluorine. In an IR absorption spectrum of the phosphor, the intensity ratio of the peak in 3570 to 3610 cm−1 to that in 1200 to 1240 cm−1 is 0.1 or less.

公开(公告)号：US10519368B2

公开(公告)日：2019-12-31

申请号：US15175627

申请日：2016-06-07

申请人： KABUSHIKI KAISHA TOSHIBA ,  TOSHIBA MATERIALS CO., LTD.

发明人： Ryosuke Hiramatsu ,  Jun Tamura ,  Kunio Ishida ,  Keiko Albessard ,  Masahiro Kato

IPC分类号： C09K11/61 ,  C09K11/57 ,  H01L33/50 ,  H01L33/62

摘要： A red-light emitting phosphor is provided, having a basic composition represented by Ka(Si1-x,Mnx)Fb and also having a particular Raman spectrum, wherein the intensity ratio I1/I0, which is a ratio of (I1) the peak in a Raman shift of 600±10 cm−1 assigned to Mn—F bonds in the crystal to that (I0) in a Raman shift of 650±10 cm−1 assigned to Si—F bonds in the crystal, is 0.09 to 0.22. This phosphor is produced by bringing a silicon source in contact with an aqueous reaction solution containing potassium permanganate and hydrogen fluoride, wherein a molar ratio of hydrogen fluoride to potassium permanganate is 87 to 127.

公开(公告)号：US09349925B2

公开(公告)日：2016-05-24

申请号：US14471352

申请日：2014-08-28

申请人： Kabushiki Kaisha Toshiba

发明人： Yasushi Hattori ,  Masahiro Kato ,  Kunio Ishida ,  Shinya Nunoue ,  Yumi Fukuda

IPC分类号： H01L33/50 ,  C09K11/64 ,  C09K11/59 ,  C09K11/78 ,  C09K11/79 ,  C09K11/80 ,  C04B35/597 ,  C09K11/08 ,  C09K11/77 ,  H05B33/14 ,  F21K99/00

CPC分类号： H01L33/504 ,  C04B35/597 ,  C04B2235/3206 ,  C04B2235/3208 ,  C04B2235/3213 ,  C04B2235/3215 ,  C04B2235/3224 ,  C04B2235/3229 ,  C09K11/0883 ,  C09K11/7734 ,  F21K9/64 ,  H01L2224/48091 ,  Y02B20/181 ,  H01L2924/00014

摘要： A light emitting device according to embodiments includes a light emitting element emitting light with a peak wavelength of 420˜445 nm, a first phosphor emitting light with a peak wavelength of 485˜530 nm, a second phosphor emitting light with a peak wavelength of 530˜580 nm, and a third phosphor emitting light with a peak wavelength of 600˜650 nm. The device emits light having an emission spectrum that has a local minimum value of light intensity between a wavelength of 450˜470 nm or less, the local minimum value being 60% or less of a maximum value of light intensity at a longer wavelength side from the local minimum value, and the device emits light having a color temperature of 4600 K or higher and 5400 K or less.

摘要翻译： 根据实施方案的发光器件包括发射峰值波长为420〜45nm的光的发光元件，发射峰值波长为485〜530nm的光的第一荧光体，发射峰值波长为530的第二荧光体 〜580nm，以及发射峰值波长为600〜650nm的光的第三荧光体。 该装置发射具有波长为450〜470nm以下的光强度的局部最小值的发射光谱的光，局部最小值为长波长侧的光强度的最大值的60％以下 局部最小值，并且该装置发射色温为4600K以上且5400K以下的光。

公开(公告)号：US10032967B2

公开(公告)日：2018-07-24

申请号：US15454107

申请日：2017-03-09

申请人： Kabushiki Kaisha Toshiba

发明人： Keiko Albessard ,  Ryosuke Hiramatsu ,  Kunio Ishida ,  Yasushi Hattori ,  Masahiro Kato

IPC分类号： H01L33/50 ,  C09K11/61

摘要： A phosphor comprising: a chemical composition expressed by the following formula (K1-p, Mp)a(Si1-y, Mny)Fb (M is at least one element selected from the group consisting of Na and Ca, and p satisfies 0≤p≤0.01, a satisfies 1.5≤a≤2.5, b satisfies 5.5≤b≤6.5, and y satisfies 0

公开(公告)号：US09520540B2

公开(公告)日：2016-12-13

申请号：US14184881

申请日：2014-02-20

申请人： Kabushiki Kaisha Toshiba

发明人： Kunio Ishida ,  Keiko Albessard ,  Yasushi Hattori ,  Iwao Mitsuishi ,  Yumi Fukuda ,  Ryosuke Hiramatsu ,  Aoi Okada ,  Masahiro Kato

IPC分类号： H01L33/50 ,  C09K11/77

CPC分类号： H01L33/504 ,  C09K11/7721 ,  C09K11/7734 ,  H01L33/502

摘要： A light-emitting device of an embodiment includes a light-emitting element emitting blue excitation light and a first phosphor excited by the blue excitation light and emitting fluorescence. A peak wavelength of the fluorescence is not shorter than 520 nm and shorter than 660 nm and the peak wavelength of the fluorescence shifting in the same direction when a peak wavelength of the blue excitation light shifts. The first phosphor is one of a yellow phosphor emitting yellow fluorescence, a green phosphor emitting green fluorescence, a yellow-green/yellow phosphor emitting yellow-green/yellow fluorescence and a red phosphor emitting red fluorescence.

摘要翻译： 实施例的发光装置包括发射蓝色激发光的发光元件和由蓝色激发光激发并发射荧光的第一荧光体。 当蓝色激发光的峰值波长偏移时，荧光的峰值波长不小于520nm且小于660nm，并且荧光的峰值波长在相同方向上移动。 第一荧光体是发出黄色荧光的黄色荧光体，发出绿色荧光的绿色荧光体，发出黄绿色/黄色荧光物质的黄绿色/黄色荧光体和发出红色荧光物质的红色荧光体之一。