公开(公告)号：US20240240080A1

公开(公告)日：2024-07-18

申请号：US18565218

申请日：2022-05-26

Applicant: NICHIA CORPORATION

Inventor： Tomokazu YOSHIDA ,  Kenichi AOYAGI ,  Kazuya NISHIMATA

IPC: C09K11/64 ,  C09K11/02 ,  H01L33/50

CPC classification number: C09K11/646 ,  C09K11/025 ,  H01L33/502

Abstract: Provided is a light-emitting material containing a phosphor that emits red light with high luminance. The light-emitting material contains a fluoride phosphor having a first composition containing an alkali metal including K, Si, Al, Mn, and F. In the first composition, when a total number of moles of the alkali metal is 2, a total number of moles of Si, Al, and Mn is in a range from 0.9 to 1.1, a number of moles of Al is in a range from greater than 0 to 0.1, a number of moles of Mn is in a range from greater than 0 to 0.2, and a number of moles of F is in a range from 5.9 to less than 6.0. The fluoride phosphor has a cubic system crystal structure and has a lattice constant of 0.8138 nm or larger.

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：US20150349213A1

公开(公告)日：2015-12-03

申请号：US14724118

申请日：2015-05-28

Applicant: NICHIA CORPORATION

Inventor： Shoji HOSOKAWA ,  Masafumi SAKAMOTO ,  Tomokazu YOSHIDA

IPC: H01L33/50 ,  C09K11/77 ,  C09K11/66

CPC classification number: H01L33/504 ,  C09K11/0883 ,  C09K11/665 ,  C09K11/7707 ,  C09K11/7731 ,  C09K11/7734 ,  H01L33/502 ,  H01L2224/48247 ,  H01L2224/48257 ,  H01L2224/73265 ,  Y10T428/2982

Abstract: A red phosphor including the composition represented by the following general formula. (x−a)MgO.(a/2)Sc2O3.yMgF2.cCaF2.(1−b)GeO2.(b/2)Mt2O3:zMn4+ where x, y, z, a, b, and c satisfy 2.0≦x≦4.0, 0

Abstract translation: 包含由以下通式表示的组合物的红色荧光体。 （x-a）MgO（a / 2）Sc2O3.yMgF2.cCaF2（1-b）GeO2（b / 2）Mt2O3：zMn4 +其中x，y，z，a，b和c满足2.0＆ x

公开(公告)号：US20150061488A1

公开(公告)日：2015-03-05

申请号：US14469816

申请日：2014-08-27

Applicant: NICHIA CORPORATION

Inventor： Tomokazu YOSHIDA

IPC: C09K11/02 ,  B05D5/06 ,  B05D1/18 ,  F21V9/16 ,  C09K11/67

CPC classification number: C09K11/616 ,  C09K11/025 ,  C09K11/675 ,  H01L33/502 ,  H01L33/507 ,  H01L33/56 ,  H01L33/62 ,  H01L2224/48091 ,  H01L2224/48247 ,  H01L2224/48257 ,  H01L2224/73265 ,  H01L2924/181 ,  H01L2924/00014 ,  H01L2924/00012

Abstract: The present invention provides a method for producing a fluoride fluorescent material, comprising: contacting a fluoride particles represented by the following general formula (I): K2[M1−aMn4+aF6]  (I) wherein M is at least one member selected from the group consisting of elements belonging to Groups 4 and 14 of the Periodic Table, and a satisfies the relationship: 0

Abstract translation: 本发明提供一种氟化物荧光体的制造方法，其特征在于，使由以下通式（I）表示的氟化物粒子：K2 [M1-aMn4 + aF6]（I）使其接触，其中，M为选自 由元素周期表第4组和第14组的元素组成的组，满足关系：0

公开(公告)号：US20150035430A1

公开(公告)日：2015-02-05

申请号：US14446600

申请日：2014-07-30

Applicant: NICHIA CORPORATION

Inventor： Tomokazu YOSHIDA ,  Suguru TAKASHIMA

IPC: H01L33/50 ,  C09K11/61

CPC classification number: C09K11/617 ,  C09K11/616 ,  H01L33/502 ,  H01L2224/48091 ,  H01L2224/48247 ,  H01L2224/48257 ,  H01L2224/73265 ,  H01L2924/181 ,  H01L2924/00014 ,  H01L2924/00012

Abstract: The present invention provides a fluoride fluorescent material comprising a chemical composition represented by the following formula (I): K2[M1-aMn4+aF6]  (I) wherein M is at least one element selected from the group consisting of elements belonging to Groups 4 and 14 of the Periodic Table, and a is a value that satisfies the relationship: 0

Abstract translation: 本发明提供一种含有由下式（I）表示的化学组成的氟化物荧光材料：K2 [M1-aMn4 + aF6]（I）其中M是选自属于第4组的元素中的至少一种元素 和14，a为满足0

公开(公告)号：US20240279543A1

公开(公告)日：2024-08-22

申请号：US18258737

申请日：2021-12-09

Applicant: NICHIA CORPORATION

Inventor： Tomokazu YOSHIDA

IPC: C09K11/64

CPC classification number: C09K11/645

Abstract: Provided is a red light emitting phosphor having a high luminance. The fluoride phosphor has a first composition which includes an alkali metal containing K, Si, Al, Mn, and F. In the first composition, when a total number of moles of the alkali metal is 2: a total number of moles of Si, Al, and Mn is 0.9 to or more and 1.1 or less; a number of moles of Al is more than 0 but and 0.1 or less; a number of moles of Mn is more than 0 but and 0.2 or less; and the a number of moles of F is 5.9 to 6.1. The fluoride phosphor has a crystal structure of cubic system, and a lattice constant of not less than 0.8138 nm.

公开(公告)号：US20220403231A1

公开(公告)日：2022-12-22

申请号：US17807851

申请日：2022-06-20

Applicant: NICHIA CORPORATION

Inventor： Yuki SHIOTA ,  Keisho YAMASHITA ,  Shoji HOSOKAWA ,  Tomokazu YOSHIDA ,  Yohei YAMAUCHI ,  Naoto KIJIMA

IPC: C09K11/02 ,  C09K11/61 ,  C09K11/06 ,  H01L51/00 ,  F21V9/30 ,  F21V8/00 ,  B32B27/36 ,  B32B27/30 ,  B32B27/08 ,  B32B3/12

Abstract: A wavelength conversion member including a wavelength conversion layer containing a fluoride phosphor, quantum dots, a surfactant, and a resin. The fluoride phosphor contains fluoride particles having a specific composition and having particle size values within specific ranges. The quantum dots include at least one selected from a first crystalline nanoparticle and a second crystalline nanoparticle. The first crystalline nanoparticle has a specific composition. When irradiated with light having a wavelength of 450 nm, the first crystalline nanoparticle emits light having an emission peak at a wavelength in a range from 510 nm to 535 nm, and a full width at half maximum of the emission peak of the first crystalline nanoparticle is in a range from 10 nm to 30 nm. The second crystalline nanoparticle includes a chalcopyrite-type crystalline structure, and a full width at half maximum of the emission peak of the second crystalline nanoparticle is 45 nm or less.

公开(公告)号：US20200318004A1

公开(公告)日：2020-10-08

申请号：US16905340

申请日：2020-06-18

Applicant: NICHIA CORPORATION

Inventor： Kazuya NISHIMATA ,  Tomokazu YOSHIDA ,  Shoji HOSOKAWA

IPC: C09K11/77 ,  C09K11/55 ,  C09K11/57 ,  C09K11/64 ,  H01L33/50

Abstract: Disclosed are a method of producing an aluminate fluorescent material, such an aluminate fluorescent material, and a light emitting device. The aluminate fluorescent material production method includes: subjecting a first mixture prepared by mixing a compound containing at least one metal element selected from the group consisting of Ba, Sr and Ca, and at least one compound selected from the group consisting of a compound containing Mn and a compound containing Eu, and a compound containing Al, in which a compound containing Mg may be optionally mixed, to first heat treatment to give a first calcined product having an average particle diameter D1, as measured according to a Fisher Sub-Sieve Sizer method, of 6 μm or more; and subjecting a second mixture prepared by mixing a compound containing at least one metal element selected from the group consisting of Ba, Sr and Ca, at least one compound selected from the group consisting of a compound containing Mn and a compound containing Eu, and a compound containing Al, and the first calcined product whose content is 10% by mass or more and 90% by mass or less relative to the total amount of the second mixture, in which a compound containing Mg may be optionally mixed, to second heat treatment to give a second calcined product.

公开(公告)号：US20190207064A1

公开(公告)日：2019-07-04

申请号：US16296803

申请日：2019-03-08

Applicant: NICHIA CORPORATION

Inventor： Shoji HOSOKAWA ,  Kazuya NISHIMATA ,  Tomokazu YOSHIDA

IPC: H01L33/50 ,  C09K11/64 ,  C09K11/77 ,  C09K11/08 ,  H01L33/32 ,  G02F1/13357

CPC classification number: H01L33/504 ,  C09K11/0883 ,  C09K11/643 ,  C09K11/7731 ,  C09K11/7734 ,  G02F1/1336 ,  H01L33/32 ,  H01L33/486 ,  H01L33/507 ,  H01L33/508 ,  H01L2933/0091

Abstract: Provided is a light-emitting device including a light-emitting element having a peak emission wavelength in a range of from 400 nm to 470 nm, and a fluorescent member including a first fluorescent material including an aluminate that contains Mg, Mn, and at least one alkali earth metal selected from the group consisting of Ba, Sr, and Ca, a second fluorescent material having a different composition from the first fluorescent material, and a third fluorescent material. The first, second and third fluorescent materials have a peak emission wavelength in a range of from 510 nm to 525 nm, from 510 nm to 550 nm, and from 620 nm to 670 nm, respectively.

公开(公告)号：US20190062632A1

公开(公告)日：2019-02-28

申请号：US16116871

申请日：2018-08-29

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≤0.6, 0.4≤r≤0.7, 8.5≤s≤13.0, 0≤t≤0.3, 0.5