公开(公告)号：US20190165220A1

公开(公告)日：2019-05-30

申请号：US16199922

申请日：2018-11-26

Applicant: NICHIA CORPORATION

Inventor： Tomoya FUKUI ,  Tadayoshi YANAGIHARA

IPC: H01L33/50 ,  H01S5/06 ,  C04B35/622 ,  C04B35/505

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.

公开(公告)号：US20200370715A1

公开(公告)日：2020-11-26

申请号：US16881174

申请日：2020-05-22

Applicant: NICHIA CORPORATION

Inventor： Tomoya FUKUI ,  Tadayoshi YANAGIHARA

IPC: F21K9/90 ,  F21K9/64 ,  H01L33/00 ,  H01S5/06

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.

公开(公告)号：US20190309221A1

公开(公告)日：2019-10-10

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