公开(公告)号：US20200303597A1

公开(公告)日：2020-09-24

申请号：US16651434

申请日：2018-09-10

Applicant: NGK SPARK PLUG CO., LTD.

Inventor： Syohei TAKAKU ,  Yusuke KATSU ,  Tsuneyuki ITO ,  Yuki SHIMURA ,  Shinji BAN ,  Takeshi MITSUOKA

IPC: H01L33/50 ,  F21V7/30 ,  F21V29/502 ,  F21V13/08 ,  F21V9/32 ,  C04B35/117

Abstract: An optical wavelength converter (1) is configured such that an optical wavelength conversion member (9) is bonded to a heat dissipation member (13) having superior heat dissipation property. Thus, heat generated by light incident on the optical wavelength conversion member (9) can be efficiently dissipated. Therefore, even when high-energy light is incident on the optical wavelength converter, temperature quenching is less likely to occur, and thus high fluorescence intensity can be maintained. An intermediate film (21) is disposed between a reflective film (19) and a bonding portion (15). The presence of the intermediate film (21) improves the adhesion between the reflective film (19) and the bonding portion (15), thereby enhancing the heat dissipation from the optical wavelength conversion member (9) to the heat dissipation member (13). Thus, the temperature quenching of the optical wavelength conversion member (9) can be prevented, thereby enhancing fluorescence intensity.

公开(公告)号：US20190245119A1

公开(公告)日：2019-08-08

申请号：US16343188

申请日：2017-10-24

Applicant: NGK SPARK PLUG CO., LTD.

Inventor： Yusuke KATSU ,  Shohei TAKAKU ,  Tsuneyuki ITO ,  Takeshi MITSUOKA ,  Jun MOTEKI

IPC: H01L33/50 ,  H01L33/48 ,  B32B7/027 ,  B32B15/04 ,  C09K11/77 ,  C09K11/02 ,  C04B35/117 ,  C04B35/44 ,  C04B35/645

CPC classification number: H01L33/502 ,  B32B7/027 ,  B32B15/04 ,  B32B2307/302 ,  C04B35/117 ,  C04B35/44 ,  C04B35/50 ,  C04B35/645 ,  C04B2235/3217 ,  C04B2235/3222 ,  C04B2235/6585 ,  C09K11/02 ,  C09K11/08 ,  C09K11/7774 ,  G02B5/20 ,  H01L33/483 ,  H01L33/50 ,  H01L33/505 ,  H01L2933/0041

Abstract: A method for producing an optical wavelength conversion member (9) composed of a sintered body containing, as main components, Al2O3 and a component represented by formula A3B5O12:Ce; an optical wavelength conversion member; an optical wavelength conversion component including the optical wavelength conversion member; and a light-emitting device including the optical wavelength conversion member or the optical wavelength conversion component. The production method of the sintered body includes firing in a firing atmosphere having a pressure of 104 Pa or more and an oxygen concentration of 0.8 vol. % or more and less than 25 vol. %.