公开(公告)号：US20220026046A1

公开(公告)日：2022-01-27

申请号：US17443141

申请日：2021-07-21

Applicant: NICHIA CORPORATION

Inventor： Shigeki Yoshida ,  Hiroyuki Watanabe ,  Eri Matsuka

IPC: F21V9/30

Abstract: A wavelength conversion member includes a support and a wavelength conversion layer including a first phosphor having a composition represented by Formula (1) and having an emission peak wavelength in a range from 550 nm to 620 nm, and a second phosphor having a different emission peak wavelength and/or a full width at half maximum from the first phosphor. An amount of the first phosphor in the wavelength conversion layer is in a range from 20 mass % to 80 mass % relative to a total amount of the phosphors In Formula (1), M1 represents at least one of rare earth elements other than La and Ce, a total molar content percentage of Y, Gd, and Lu in M1 is 90% or more, and p, q, r, and s satisfy 2.7≤(p+q+r)≤3.3, 0≤r≤1.2, 10≤s≤12, and 0

公开(公告)号：US11867380B2

公开(公告)日：2024-01-09

申请号：US17443141

申请日：2021-07-21

Applicant: NICHIA CORPORATION

Inventor： Shigeki Yoshida ,  Hiroyuki Watanabe ,  Eri Matsuka

IPC: F21V9/30 ,  C09K11/77 ,  F21Y115/30

CPC classification number: F21V9/30 ,  C09K11/7774 ,  C09K11/77747 ,  F21Y2115/30

Abstract: A wavelength conversion member includes a support and a wavelength conversion layer including a first phosphor having a composition represented by Formula (1) and having an emission peak wavelength in a range from 550 nm to 620 nm, and a second phosphor having a different emission peak wavelength and/or a full width at half maximum from the first phosphor. An amount of the first phosphor in the wavelength conversion layer is in a range from 20 mass % to 80 mass % relative to a total amount of the phosphors In Formula (1), M1 represents at least one of rare earth elements other than La and Ce, a total molar content percentage of Y, Gd, and Lu in M1 is 90% or more, and p, q, r, and s satisfy 2.7≤(p+q+r)≤3.3, 0≤r≤1.2, 10≤s≤12, and 0

公开(公告)号：US11597879B2

公开(公告)日：2023-03-07

申请号：US17449340

申请日：2021-09-29

Applicant: NICHIA CORPORATION

Inventor： Shigeki Yoshida ,  Hiroyuki Watanabe ,  Eri Matsuka

IPC: C09K11/77 ,  H01L33/50 ,  C09K11/02

Abstract: The wavelength converter includes a support, and a wavelength conversion layer disposed on the support. The wavelength conversion layer contains a fluorescent layer containing a fluorescent material with a composition represented by formula (1) below, and having a thickness of from 5 μm to 155 μm. A ratio of a sum of cross-sectional areas of particles of the fluorescent material in a cross-section of the wavelength conversion layer orthogonal to a disposed surface of the wavelength conversion layer that is disposed on the support and including a full width of the wavelength conversion layer to a cross-sectional area of the cross-section of the wavelength conversion layer is from 5% to 40%. In the formula (1), M1 is at least one selected from the rare earth elements other than La and Ce; a total amount of yttrium (Y), gadolinium (Gd), and lutetium (Lu) by mole with respect to a total amount of M1 by mole is 90% or more; and p, q, r, and s satisfy 2.7≤p+q+r≤3.3, 0≤r≤1.2, 10≤s≤12, and 0