-
Patent Agency Ranking
公开(公告)号：US20220100068A1
公开(公告)日：2022-03-31
申请号：US17426329
申请日：2019-10-17
Inventor： Yoshihisa NAGASAKI , Takashi OHBAYASHI , Naoyuki TANI , Nobuyasu SUZUKI , Takahiro HAMADA , Yukihiko SUGIO
Abstract: Provided is a technique for suppressing a temperature rise of a wavelength conversion member. The present disclosure is provided with: phosphor layer containing a phosphor; substrate that supports phosphor layer; and heat sink bonded to substrate, wherein the thermal conductivity of substrate is greater than the thermal conductivity of phosphor layer, and the thermal conductivity of heat sink is greater than the thermal conductivity of substrate, or the thermal conductivity of heat sink is smaller than the thermal conductivity of substrate.
-
公开(公告)号：US20200011507A1
公开(公告)日：2020-01-09
申请号：US16483874
申请日：2018-02-09
Inventor： Yoshihisa NAGASAKI , Takashi OHBAYASHI , Takahiro HAMADA , Yukihiko SUGIO , Yusuke OGIHARA
IPC: F21V9/30 , F21S41/16 , F21S41/176
Abstract: A wavelength conversion member of the present disclosure includes a first matrix, phosphor particles embedded in the first matrix, and at least one selected from the group consisting of first filler particles embedded in the first matrix and surface coating layers respectively covering surfaces of the phosphor particles. The wavelength conversion member satisfies at least one relationship selected from the group consisting of |n3−n1|>|n1−n2| and |n4−n1|>|n1−n2| wherein n1 is a refractive index of the first matrix, n2 is a refractive index of the phosphor particles, n3 is a refractive index of the first filler particles, and n4 is a refractive index of the surface coating layers.
-
公开(公告)号：US20220059729A1
公开(公告)日：2022-02-24
申请号：US17414877
申请日：2019-10-04
Inventor： Takahiro HAMADA , Yukihiko SUGIO , Nobuyasu SUZUKI , Yoshihisa NAGASAKI
Abstract: A wavelength conversion device includes a substrate, a matrix supported by the substrate and containing inorganic material, a phosphor embedded in the matrix, and filler particles embedded in the matrix. A linear expansion coefficient of the filler particles is equal to or larger than 25 ppm/K and equal to or smaller than 790 ppm/K, and is larger than a linear expansion coefficient of the matrix. This wavelength conversion device suppresses warping of the substrate.
-
公开(公告)号：US20210149097A1
公开(公告)日：2021-05-20
申请号：US16623043
申请日：2018-06-14
Inventor： Yukihiko SUGIO , Takahiro HAMADA , Nobuyasu SUZUKI , Yoshihisa NAGASAKI
Abstract: Provided is a wavelength conversion member exhibiting high reliability. A wavelength conversion member includes a phosphor layer having a matrix containing ZnO and phosphor particles embedded in the matrix and a first protective layer that contains at least one selected from the group of ZnCl2, ZnS and ZnSO4 and covers the phosphor layer. For example, the first protective layer is in contact with the phosphor layer. For example, ZnO is c-axis-oriented polycrystalline ZnO.
-
公开(公告)号：US20210102117A1
公开(公告)日：2021-04-08
申请号：US16635456
申请日：2018-08-07
Inventor： Takahiro HAMADA , Yukihiko SUGIO , Takashi OHBAYASHI , Yoshihisa NAGASAKI
Abstract: A wavelength conversion device of the present disclosure includes a substrate, a phosphor layer that has a matrix containing zinc oxide and phosphor particles embedded in the matrix and that is supported by the substrate, a dielectric layer disposed between the substrate and the phosphor layer, and a protective layer that is disposed between the phosphor layer and the dielectric layer and that has an isoelectric point equal to or larger than 7. A main surface of the substrate includes, for example, first and second regions. The phosphor layer covers, for example, only the first region out of the first and second regions.
-
-
-
-
Search Results
5
records
(took 0.018 seconds)
