公开(公告)号：US20240158694A1

公开(公告)日：2024-05-16

申请号：US18420283

申请日：2024-01-23

申请人： NICHIA CORPORATION

发明人： Masaki KONDO ,  Shozo TAKETOMI ,  Hirofumi OGURI

IPC分类号： C09K11/77 ,  B22F1/142 ,  B22F7/00 ,  C01F17/34 ,  C04B35/117 ,  C04B35/44 ,  C04B35/64 ,  C09K11/02 ,  G03B21/20 ,  H01L33/50

CPC分类号： C09K11/7774 ,  B22F1/142 ,  B22F7/008 ,  C01F17/34 ,  C04B35/117 ,  C04B35/44 ,  C04B35/64 ,  C09K11/02 ,  G03B21/204 ,  H01L33/502 ,  B22F2302/25 ,  C09K11/0838

摘要： A method for producing a rare earth aluminate sintered body includes: preparing a molded body by mixing a fluorescent material having a composition of a rare earth aluminate and a raw material mixture comprising an oxide containing at least one rare earth element Ln selected from the group consisting of Y, La, Lu, Gd, and Tb, an oxide containing Ce, an oxide containing Al, and optionally an oxide containing at least one element M′ selected from the group consisting of Ga and Sc; and calcining the molded body to obtain a sintered body.

公开(公告)号：US20200324342A1

公开(公告)日：2020-10-15

申请号：US16845807

申请日：2020-04-10

申请人： NICHIA CORPORATION

发明人： Masaki KONDO ,  Shozo TAKETOMI ,  Hirofumi OGURI

IPC分类号： B22F7/00 ,  B22F1/00

摘要： A method for producing a rare earth aluminate sintered body includes: preparing a molded body by mixing a fluorescent material having a composition of a rare earth aluminate and a raw material mixture comprising an oxide containing at least one rare earth element Ln selected from the group consisting of Y, La, Lu, Gd, and Tb, an oxide containing Ce, an oxide containing Al, and optionally an oxide containing at least one element M1 selected from the group consisting of Ga and Sc; and calcining the molded body to obtain a sintered body.

公开(公告)号：US20240083820A1

公开(公告)日：2024-03-14

申请号：US18507047

申请日：2023-11-11

申请人： NICHIA CORPORATION

发明人： Toshiyuki HIRAI ,  Keisuke SUZUKI ,  Hirofumi OGURI

IPC分类号： C04B35/10 ,  C04B35/117 ,  C04B35/44 ,  C04B35/64 ,  C04B35/645 ,  C09K11/77

CPC分类号： C04B35/10 ,  C04B35/117 ,  C04B35/44 ,  C04B35/64 ,  C04B35/6455 ,  C09K11/7774 ,  C04B2111/807 ,  C04B2235/3225 ,  C04B2235/3227 ,  C04B2235/662 ,  C04B2235/77 ,  C04B2235/963

摘要： A method for producing a ceramic complex includes: preparing a raw material mixture that contains 5% by mass or more and 40% by mass or less of first rare earth aluminate fluorescent material particles containing an activating element and a first rare earth element different from the activating element, 0.1% by mass or more and 32% by mass or less of oxide particles containing a second rare earth element, and the balance of aluminum oxide particles, relative to 100% by mass of the total amount of the first rare earth aluminate fluorescent material particles, the oxide particles, and the aluminum oxide particles; preparing a molded body of the raw material mixture; and obtaining a sintered body by calcining the molded body in a temperature range of 1,550° C. or higher and 1,800° C. or lower.

公开(公告)号：US20220186117A1

公开(公告)日：2022-06-16

申请号：US17643746

申请日：2021-12-10

申请人： NICHIA CORPORATION

发明人： Hirofumi OGURI ,  Toshiyuki HIRAI

IPC分类号： C09K11/77 ,  C09K11/02 ,  C04B35/117 ,  C04B35/64 ,  H01L33/50 ,  H01L33/60

摘要： A ceramic complex including a first crystal phase containing a first rare earth aluminate fluorescent material containing an activating element and a first rare earth element that is different from the activating element, and a second crystal phase containing aluminum oxide, having a content of the first crystal phase in a range of 5% by volume or more and 40% by volume or less and a content of the second crystal phase in a range of 57% by volume or more and 95% by volume or less based on a total amount of the ceramic complex, having an average value of a second crystal diameter of the second crystal phase measured under the particular measurement condition of 12 μm or less, and having a QD value of 0.5 or less expressed by QD=(D75−D25)/(D75+D25), wherein D25 and D75 are defined in the disclosure.

公开(公告)号：US20210403382A1

公开(公告)日：2021-12-30

申请号：US17304956

申请日：2021-06-29

申请人： NICHIA CORPORATION

发明人： Toshiyuki HIRAI ,  Keisuke SUZUKI ,  Hirofumi OGURI

IPC分类号： C04B35/10 ,  C04B35/64 ,  C04B35/44 ,  C09K11/77

摘要： A method for producing a ceramic complex includes: preparing a raw material mixture that contains 5% by mass or more and 40% by mass or less of first rare earth aluminate fluorescent material particles containing an activating element and a first rare earth element different from the activating element, 0.1% by mass or more and 32% by mass or less of oxide particles containing a second rare earth element, and the balance of aluminum oxide particles, relative to 100% by mass of the total amount of the first rare earth aluminate fluorescent material particles, the oxide particles, and the aluminum oxide particles; preparing a molded body of the raw material mixture; and obtaining a sintered body by calcining the molded body in a temperature range of 1,550° C. or higher and 1,800° C. or lower.