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公开(公告)号：US11387390B2
公开(公告)日：2022-07-12
申请号：US16199922
申请日：2018-11-26
Applicant: NICHIA CORPORATION
Inventor： Tomoya Fukui , Tadayoshi Yanagihara
IPC: C09K11/77 , H01L33/50 , H01S5/06 , C04B35/622 , C04B35/505 , C04B35/645 , C04B35/44 , C04B35/597 , C04B35/64
Abstract: A method for producing a wavelength converting member that emits light under irradiation of excitation light, and a wavelength converting member. The method for producing a wavelength converting member, including: providing a green body prepared by a process comprising molding a mixed powder containing a Ca-α-SiAlON fluorescent material and alumina, and depending on necessity an YAG fluorescent material; and primarily sintering the green body at a temperature in a range of 1,000° C. or more and 1,600° C. or less to obtain a first sintered body.
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公开(公告)号：US11486550B2
公开(公告)日：2022-11-01
申请号：US16881174
申请日：2020-05-22
Applicant: NICHIA CORPORATION
Inventor： Tomoya Fukui , Tadayoshi Yanagihara
Abstract: Provided is a method for producing a wavelength conversion sintered body that emits light under irradiation of excitation light. The method for producing a wavelength conversion sintered body includes: preparing a molded body obtained by molding a mixture containing an α-SiAlON fluorescent material and aluminum oxide particles and having a content of Ga of 15 ppm by mass or less; and primary calcining the molded body at a temperature in a range of 1,370° C. or more and 1,600° C. or less to obtain a first sintered body.
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公开(公告)号：US11149193B2
公开(公告)日：2021-10-19
申请号：US16375476
申请日：2019-04-04
Applicant: NICHIA CORPORATION
Inventor： Hirofumi Ooguri , Tomoya Fukui , Tadayoshi Yanagihara , Shigeki Yoshida
IPC: C09K11/02 , C09K11/77 , C09K11/08 , C04B35/117 , C04B35/593 , C04B35/645 , H01L33/50
Abstract: Provided are a method for producing a ceramic composite material that has a high light emission intensity, a ceramic composite material, and a light emitting device. The method for producing a ceramic composite material, includes: preparing a green body containing a nitride fluorescent material having a composition represented by the following chemical formula (I) and aluminum oxide particles mixed with each other; and performing primary sintering the green body at a temperature in a range of 1,250° C. or more and 1,600° C. or less to provide a first sintered body: MwLn1xAyNz (I) wherein in the chemical formula (I), M represents at least one element selected from the group consisting of Ce and Pr; Ln1 represents at least one element selected from the group consisting of Sc, Y, La, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu; A represents at least one element selected from the group consisting of Si and B; and w, x, y, and z each satisfy 0
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