公开(公告)号：US20220403232A1

公开(公告)日：2022-12-22

申请号：US17808031

申请日：2022-06-21

Applicant: NICHIA CORPORATION

Inventor： Takuma ARIKAWA ,  Masafumi KURAMOTO ,  Hiroki INOUE

IPC: C09K11/02 ,  C09K11/06 ,  C09D5/22 ,  C09D135/02 ,  H01L33/50

Abstract: Fluorescent material composite particles include translucent inorganic particles having a volume average particle diameter in a range of 30 nm or more and 500 nm or less, fluorescent nanoparticles having an average particle diameter in a range of 5 nm or more and 25 nm or less, and a first resin. At least a part of each of the translucent inorganic particles are embedded in the first resin. The translucent inorganic particles are unevenly distributed to a surface of the fluorescent material composite particles. The fluorescent material composite particles have a volume average particle diameter in a range of 0.5 μm or more and 50 μm or less.

公开(公告)号：US20210036193A1

公开(公告)日：2021-02-04

申请号：US16942767

申请日：2020-07-30

Applicant: NICHIA CORPORATION

Inventor： Toshifumi IMURA ,  Masafumi KURAMOTO ,  Hiroki INOUE

IPC: H01L33/54 ,  H01L23/00

Abstract: A light-emitting device includes: a light-emitting element including a first surface provided as a light extraction surface, a second surface opposite to the first surface, a plurality of third surfaces between the first surface and the second surface, and a positive electrode and a negative electrode at the second surface; a light-transmissive member disposed at the first surface; and a bonding member disposed between the light-emitting element and the light-transmissive member and covering from the first surface to the plurality of third surfaces of the light-emitting element to bond the light-emitting element and the light-transmissive member. The bonding member is made of a resin that contains nanoparticles. The nanoparticles have a particle diameter of 1 nm or more and 30 nm or less and a content of 10 mass % or more and 20 mass % or less.

公开(公告)号：US20240336835A1

公开(公告)日：2024-10-10

申请号：US18627015

申请日：2024-04-04

Applicant: NICHIA CORPORATION

Inventor： Hiroshi OGASA ,  Hiroki INOUE ,  Kenichi AOYAGI

IPC: C09K11/06

CPC classification number: C09K11/06 ,  C09K2211/182

Abstract: An object of the present invention is to provide: a rare earth metal complex phosphor having an extended durability; and a method of producing such a rare earth metal complex phosphor; and the like. Provided is a method of producing a metal complex phosphor having an emission peak wavelength of 600 nm to 635 nm, the method comprising: preparing a ligand that is represented by Chemical Formula (I) and comprises two sets of azomethine groups, and dissolving this ligand in a first solvent to prepare a solution (1); preparing a rare earth metal complex that comprises a β-diketonato ligand represented by Chemical Formula (II) but does not comprise the ligand represented by Chemical Formula (I), and dissolving this rare earth metal complex in a second solvent to prepare a solution (2); mixing the solution (1) and the solution (2).