公开(公告)号：US20170054059A1

公开(公告)日：2017-02-23

申请号：US15234249

申请日：2016-08-11

Applicant: NICHIA CORPORATION

Inventor： Shoji HOSOKAWA ,  Sadakazu WAKUI

IPC: H01L33/50 ,  H01L33/62 ,  H01L33/56 ,  H01L33/32 ,  H01L33/48

CPC classification number: H01L33/504 ,  H01L33/32 ,  H01L2224/48091 ,  H01L2224/48247 ,  H01L2224/48257 ,  H01L2224/73265 ,  H01L2924/181 ,  H01L2924/00014 ,  H01L2924/00012

Abstract: A light emitting device that includes a light emitting element having a peak emission wavelength at 400-480 nm and a fluorescent member can be provided. The fluorescent member includes a first fluorescent material that includes a nitride containing alkaline-earth metal, alkali metal, aluminium and europium, a second fluorescent material that includes a nitride containing alkaline-earth metal, aluminium, silicon and europium, and a third fluorescent material having a peak emission wavelength in a range of from 500 nm to 560 nm. A content of the first fluorescent material to a total content of the first fluorescent material and the second fluorescent material is from 5% by mass to 95% by mass.

Abstract translation: 可以提供包括具有400-480nm的峰值发射波长的发光元件和荧光部件的发光器件。 荧光部件包括包含碱土金属，碱金属，铝和铕的氮化物的第一荧光体，包含碱土类金属，铝，硅和铕的氮化物的第二荧光材料和第三荧光体 具有500nm至560nm范围内的峰值发射波长。 第一荧光体的含量相对于第一荧光体和第二荧光体的总含量为5质量％〜95质量％。

公开(公告)号：US20160079484A1

公开(公告)日：2016-03-17

申请号：US14853311

申请日：2015-09-14

Applicant: NICHIA CORPORATION

Inventor： Shoji HOSOKAWA ,  Daiki KURAMOTO ,  Kenji NAKATA ,  Atsushi BANDO

IPC: H01L33/50 ,  H01L33/52

CPC classification number: H01L33/502 ,  H01L21/56 ,  H01L23/29 ,  H01L23/295 ,  H01L31/0203 ,  H01L33/501 ,  H01L33/508 ,  H01L33/52 ,  H01L33/56 ,  H01L2924/01015 ,  H01L2924/0106 ,  H01L2924/181 ,  H01L2924/186

Abstract: A light emitting device includes a light emitting element, a molded member, and a sealing member. The light emitting element is arranged on or above the molded member. The sealing member covers the light emitting element. The sealing member contains a phosphor, and a filler material. The phosphor can be excited by light of the light emitting element, and emit luminescent radiation. The filler material contains neodymium hydroxide, neodymium aluminate or neodymium silicate. The filler material absorbs a part of the spectrum of the mixed light of the light emitting element and the phosphor so that the other parts of the spectrum of this mixed light are extracted from the light emitting device.

Abstract translation: 发光装置包括发光元件，模制构件和密封构件。 发光元件布置在模制构件上或上方。 密封构件覆盖发光元件。 密封构件包含磷光体和填充材料。 荧光体可以被发光元件的光激发，并发出发光。 填充材料含有氢氧化钕，铝酸钕或硅酸钕。 填充材料吸收发光元件和荧光体的混合光的一部分光谱，使得该混合光的光谱的其它部分从发光器件中提取。

公开(公告)号：US20150291878A1

公开(公告)日：2015-10-15

申请号：US14683046

申请日：2015-04-09

Applicant: Nichia Corporation

Inventor： Sadakazu WAKUI ,  Shoji HOSOKAWA

IPC: C09K11/61 ,  H01L33/50 ,  F21K99/00

CPC classification number: C09K11/617 ,  C09K11/616 ,  H01L33/502 ,  H01L2224/48247 ,  H01L2224/48257 ,  H01L2224/73265

Abstract: Provided are a red light emitting fluorescent material excellent in durability, and a method for producing the red light emitting fluorescent material. The present disclosure provides a method for producing a fluoride fluorescent material that includes subjecting a mixture that contains a fluoride in a liquid medium to a pressurization treatment and a heating treatment, the fluoride having a chemical composition represented by the following formula (I). The present disclosure also provides a fluoride fluorescent material that exhibits a rate of decrease in light-emitting energy efficiency is 5% or less after the fluoride fluorescent material is irradiated with laser light having a wavelength of 445 nm at an optical density of 3.5 W/cm2 for 300 seconds, and has a chemical composition represented by the following formula (I). A2[M1-aMn4+aF6]  (I) In the formula (I), A represents at least one cation selected from the group consisting of K+, Li+, Na+, Rb+, Cs+ and NH4+, M represents at least one element selected from the group consisting of Group 4 elements and Group 14 elements, and a represents a number that satisfies 0

Abstract translation: 提供耐久性优异的红色发光荧光材料和制造红色发光荧光材料的方法。 本公开内容提供了一种氟化物荧光材料的制造方法，其包括使含有液体介质中的氟化物的混合物进行加压处理和加热处理，所述氟化物具有由下式（I）表示的化学组成。 本发明还提供一种氟化物荧光材料，其在以3.5W /分钟的光密度对氟化物荧光材料用波长445nm的激光照射后，发光能量效率的降低率为5％以下， cm2，300秒，具有下述式（I）表示的化学组成。 A2 [M1-aMn4 + aF6]（I）在式（I）中，A表示选自K +，Li +，Na +，Rb +，Cs +和NH 4 +的至少一种阳离子，M表示选自 由第4组元素和第14族元素组成的组，a表示满足0

公开(公告)号：US20140321099A1

公开(公告)日：2014-10-30

申请号：US14261691

申请日：2014-04-25

Applicant: NICHIA CORPORATION

Inventor： Takashi KAIDE ,  Shoji HOSOKAWA

IPC: C09K11/77 ,  F21V9/16

CPC classification number: H01L33/502 ,  C09K11/7792 ,  H01L2224/48091 ,  H01L2224/48247 ,  H01L2224/48257 ,  Y10T428/2982 ,  H01L2924/00014

Abstract: A phosphor is provided which is represented by the general formula MxCeySi6−zBzN8+w. M is at least one element selected from the group consisting of La, Y, Tb and Lu. And w, x, y, and z satisfy 2.0

Abstract translation: 提供了由通式MxCeySi6-zBzN8 + w表示的荧光体。 M是选自La，Y，Tb和Lu中的至少一种元素。 而w，x，y和z分别满足2.0

公开(公告)号：US20230416090A1

公开(公告)日：2023-12-28

申请号：US18464235

申请日：2023-09-10

Applicant: NICHIA CORPORATION

Inventor： Shimpei KINOSHITA ,  Shoji HOSOKAWA

IPC: C01B21/072 ,  H01L23/00

CPC classification number: C01B21/072 ,  H01L24/01 ,  C01P2004/64 ,  C01P2002/74

Abstract: Provided are silicon-containing aluminum nitride particles having a high reflectance, a method for producing the same, and a light emitting device. In certain embodiment, silicon-containing aluminum nitride particles having a total amount of aluminum and nitrogen of 90% by mass or more, a content of silicon in a range of 1.5% by mass or more and 4.0% by mass or less, and a content of oxygen in a range of 0.5% by mass or more and 2.0% by mass or less, and having an average reflectance in a wavelength range of 380 nm or more and 730 nm or less of 85% or more.

公开(公告)号：US20200255730A1

公开(公告)日：2020-08-13

申请号：US16733633

申请日：2020-01-03

Applicant: NICHIA CORPORATION

Inventor： Sadakazu WAKUI ,  Kazuya NISHIMATA ,  Shoji HOSOKAWA

IPC: C09K11/77 ,  H01L33/50

Abstract: Disclosed are a production method for a nitride fluorescent material, a nitride fluorescent material and a light emitting device. The production method is for producing a nitride fluorescent material that has, as a fluorescent material core, a calcined body having a composition containing at least one element Ma selected from the group consisting of Sr, Ca, Ba and Mg, at least one element Mb selected from the group consisting of Li, Na and K, at least one element Mc selected from the group consisting of Eu, Ce, Tb and Mn, and Al, and optionally Si, and N, and the method includes preparing a calcined body having the above-mentioned composition, bringing the calcined body into contact with a fluorine-containing substance, and subjecting it to a first heat treatment at a temperature of 100° C. or higher and 500° C. or lower to form a fluoride-containing first film on the calcined body, and forming on the calcined body, a second film that contains a metal oxide containing at least one metal element M2 selected from the group consisting of Si, Al, Ti, Zr, Sn and Zn and subjecting it to a second heat treatment at a temperature in a range of higher than 250° C. and 500° C. or lower.

公开(公告)号：US20200248072A1

公开(公告)日：2020-08-06

申请号：US16854507

申请日：2020-04-21

Applicant: NICHIA CORPORATION

Inventor： Kazuya NISHIMATA ,  Hiroyuki WATANABE ,  Shoji HOSOKAWA

IPC: C09K11/77 ,  H01L33/62 ,  H01L33/56 ,  H01L33/50 ,  H01L33/48 ,  H01L33/32 ,  C09K11/08

Abstract: A method for producing a nitride fluorescent material having high emission luminance can be provided. The method includes heat-treating a raw material mixture containing silicon nitride, silicon, an aluminium compound, a calcium compound, and a europium compound.

公开(公告)号：US20190338184A1

公开(公告)日：2019-11-07

申请号：US16516944

申请日：2019-07-19

Applicant: NICHIA CORPORATION

Inventor： Kazuya NISHIMATA ,  Tomokazu YOSHIDA ,  Shoji HOSOKAWA

IPC: C09K11/77 ,  H01L33/50

Abstract: Disclosed are an aluminate fluorescent material having a high light emission intensity, and a light emitting device using the same. The aluminate fluorescent material includes a composition represented by the following formula (I). X1pEutMgqMnrAlsOp+t+q+r+1.5s  (I) wherein X1 represents at least one element selected from the group consisting of Ba, Sr, and Ca; and p, q, r, s, and t each satisfy 0.5≤p≤1.0, 0≤q

公开(公告)号：US20190127637A1

公开(公告)日：2019-05-02

申请号：US16176199

申请日：2018-10-31

Applicant: NICHIA CORPORATION

Inventor： Yasuaki MASHIMA ,  Shoji HOSOKAWA

IPC: C09K11/77 ,  G03B21/20

Abstract: Provided is a rare earth aluminate fluorescent material and a method of producing the same. The rare earth aluminate fluorescent material contains at least one rare earth element Ln selected from the group consisting of Y, La, Lu, Gd, and Tb; Ce; Al; and optionally at least one element M1 selected from Ga and Sc, wherein a total molar ratio of the rare earth element Ln and Ce is 3, a total molar ratio of Al and the element M1 is a product of 5 and a parameter k in a range of 0.95 or more and 1.05 or less, and a molar ratio of Ce is a product of a parameter n in a range of 0.003 or more and 0.017 or less and 3, and wherein a light emission peak wavelength λp (nm) at an excitation wavelength of 450 nm and the parameter n satisfy λp≥1590n+531.

公开(公告)号：US20190062633A1

公开(公告)日：2019-02-28

申请号：US16117514

申请日：2018-08-30

Applicant: NICHIA CORPORATION

Inventor： Sadakazu WAKUI ,  Kazuya NISHIMATA ,  Shoji HOSOKAWA

IPC: C09K11/77 ,  H01L33/50

CPC classification number: C09K11/7734 ,  H01L33/502 ,  H01L33/504 ,  H01L2933/0041

Abstract: Disclosed are a production method for a nitride fluorescent material, a nitride fluorescent material and a light emitting device. The production method is for producing a nitride fluorescent material that has, as a fluorescent material core, a calcined body having a composition containing at least one element Ma selected from the group consisting of Sr, Ca, Ba and Mg, at least one element Mb selected from the group consisting of Li, Na and K, at least one element Mc selected from the group consisting of Eu, Ce, Tb and Mn, and Al, and optionally Si, and N, and the method includes preparing a calcined body having the above-mentioned composition, bringing the calcined body into contact with a fluorine-containing substance, and subjecting it to a first heat treatment at a temperature of 100° C. or higher and 500° C. or lower to form a fluoride-containing first film on the calcined body, and forming on the calcined body, a second film that contains a metal oxide containing at least one metal element M2 selected from the group consisting of Si, Al, Ti, Zr, Sn and Zn and subjecting it to a second heat treatment at a temperature in a range of higher than 250° C. and 500° C. or lower.