-
公开(公告)号：US11427758B2
公开(公告)日：2022-08-30
申请号：US16504937
申请日：2019-07-08
Applicant: NICHIA CORPORATION
Inventor： Motoharu Morikawa , Shoji Hosokawa , Takashi Kaide , Kenichi Aoyagi
Abstract: A method for producing β-sialon fluorescent material having excellent emission intensity is provided. The method for producing β-sialon fluorescent material includes providing a composition comprising silicon nitride that contains aluminium, an oxygen atom, and europium, heat treating the composition, contacting the heat-treated composition with a basic substance, and washing the composition, which has been contacted with the basic substance, with an acidic liquid medium.
-
公开(公告)号：US11512250B2
公开(公告)日：2022-11-29
申请号：US17120662
申请日：2020-12-14
Applicant: NICHIA CORPORATION
Inventor： Kenichi Aoyagi , Takashi Kaide , Motoharu Morikawa , Shoji Hosokawa
Abstract: Provided is a method of producing a β-sialon fluorescent material having a high light emission intensity and an excellent light emission luminance. The method includes preparing a calcined product having a composition of β-sialon containing an activating element; grinding the calcined product to obtain a ground product; and heat-treating the ground product to obtain a heat-treated product. A specific surface area of the ground product is 0.2 m2/g or more.
-
公开(公告)号：US10961451B2
公开(公告)日：2021-03-30
申请号：US14793056
申请日：2015-07-07
Applicant: NICHIA CORPORATION
Inventor： Takashi Kaide , Shoji Hosokawa
Abstract: A fluorescent material is provided that has improved luminance and can generate fluorescence by excitation light in wider wavelength range. A fluorescent material represented by a general formula LaxCeySi6N8+x+y, wherein 2.0≤x≤3.5, 0
-
公开(公告)号：US10894917B2
公开(公告)日：2021-01-19
申请号：US15606153
申请日：2017-05-26
Applicant: NICHIA CORPORATION
Inventor： Kenichi Aoyagi , Takashi Kaide , Motoharu Morikawa , Shoji Hosokawa
Abstract: Provided is a method of producing a β-sialon fluorescent material having a high light emission intensity and an excellent light emission luminance. The method includes preparing a calcined product having a composition of β-sialon containing an activating element; grinding the calcined product to obtain a ground product; and heat-treating the ground product to obtain a heat-treated product. A specific surface area of the ground product is 0.2 m2/g or more.
-
公开(公告)号：US10032965B2
公开(公告)日：2018-07-24
申请号：US15148054
申请日：2016-05-06
Applicant: NICHIA CORPORATION
Inventor： Takashi Kaide , Shoji Hosokawa
CPC classification number: H01L33/502 , C09K11/7766 , C09K11/7774 , H01L2224/48091 , H01L2224/48247 , H01L2224/48257 , H01L2924/00014
Abstract: A phosphor, which is represented by the general formula containing M, Ce, Pr, Si, and N, is provided. M is at least one element selected from the group consisting of La, Y, Tb and Lu. A molar ratio of M is greater than 2.0 and smaller than 3.5. A molar ratio of Ce is greater than 0 and smaller than 1.0. A molar ratio of Pr is greater than 0 and smaller than 0.05. A molar ratio of N is greater than 10 and smaller than 12, under the condition that a molar ratio of Si is set to 6. The phosphor further contains 10 to 10,000 ppm of fluorine.
-
Patent Agency Ranking
6.发明授权Phosphor, light-emitting apparatus including the same, and phosphor production method 有权荧光体，包括其的发光装置和荧光体制造方法公开(公告)号：US09362463B2
公开(公告)日：2016-06-07
申请号：US14261638
申请日：2014-04-25
Applicant: NICHIA CORPORATION
Inventor： Takashi Kaide , Shoji Hosokawa
CPC classification number: H01L33/502 , C09K11/7766 , C09K11/7774 , H01L2224/48091 , H01L2224/48247 , H01L2224/48257 , H01L2924/00014
Abstract: A phosphor is provided which is represented by the general formula MxCeyPrzSi6N8+w. M is at least one element selected from the group consisting of La, Y, Tb and Lu. And x, y, z and w satisfy 2.0
Abstract translation: 提供了由通式MxCeyPrzSi6N8 + 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x，y，z和w分别满足2.0
-
公开(公告)号：US11753302B2
公开(公告)日：2023-09-12
申请号：US17937766
申请日：2022-10-03
Applicant: NICHIA CORPORATION
Inventor： Kenichi Aoyagi , Takashi Kaide , Yuya Takahashi , Shoji Hosokawa
IPC: C01B21/082 , C01F17/30 , C09K11/08 , C09K11/77
CPC classification number: C01B21/0826 , C01F17/30 , C09K11/0883 , C09K11/7734 , C09K11/77348
Abstract: Provided a method of producing a β-sialon fluorescent material having excellent emission intensity. The method includes providing a first composition containing aluminum, an oxygen atom, and a europium-containing silicon nitride, heat treating the first composition, contacting the heat-treated composition and a basic substance to obtain a second composition, and contacting the second composition resulting from contacting the heat-treated composition with the basic substance and an acidic liquid medium containing an acidic substance.
-
公开(公告)号：US10093855B2
公开(公告)日：2018-10-09
申请号：US15172862
申请日：2016-06-03
Applicant: NICHIA CORPORATION
Inventor： Kenichi Aoyagi , Takashi Kaide , Motoharu Morikawa , Shoji Hosokawa
IPC: C09K11/77
Abstract: A method for producing a β-sialon fluorescent material is provided. The method includes heat-treating a mixture containing an aluminum compound, a first europium compound, and silicon nitride to obtain a first heat-treated product; and heat-treating the first heat-treated product with a second europium compound in a rare gas atmosphere to obtain a second heat-treated product.
-
公开(公告)号：US09705049B2
公开(公告)日：2017-07-11
申请号：US14261691
申请日：2014-04-25
Applicant: NICHIA CORPORATION
Inventor： Takashi Kaide , Shoji Hosokawa
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
-
公开(公告)号：US11512248B2
公开(公告)日：2022-11-29
申请号：US17033576
申请日：2020-09-25
Applicant: NICHIA CORPORATION
Inventor： Kenichi Aoyagi , Takashi Kaide , Yuya Takahashi , Shoji Hosokawa
IPC: C09K11/77 , C01F17/30 , C09K11/08 , C01B21/082
Abstract: Provided a method of producing a β-sialon fluorescent material having excellent emission intensity. The method includes providing a first composition containing aluminum, an oxygen atom, and a europium-containing silicon nitride, heat treating the first composition, contacting the heat-treated composition and a basic substance to obtain a second composition, and contacting the second composition resulting from contacting the heat-treated composition with the basic substance and an acidic liquid medium containing an acidic substance.
-
-
-
-
-
-
-
-
-
Search Results
14
records
(took 0.013 seconds)
