公开(公告)号：US11862760B2

公开(公告)日：2024-01-02

申请号：US17154464

申请日：2021-01-21

Applicant: NICHIA CORPORATION

Inventor： Hiroshi Miyairi ,  Yoshimi Katsumoto ,  Takayuki Igarashi ,  Yoshifumi Hodono ,  Shinya Endo

IPC: H01L33/50 ,  H01L33/54 ,  H01L33/60 ,  H01L33/62 ,  H01L25/075

CPC classification number: H01L33/505 ,  H01L33/507 ,  H01L33/54 ,  H01L33/60 ,  H01L2933/005 ,  H01L2933/0041 ,  H01L2933/0058

Abstract: A light emitting device includes: a substrate; a light emitting element; a wavelength conversion layer; and a wall surrounding the wavelength conversion layer, having an opening portion exposing at least a part of a top surface of the wavelength conversion layer, and containing a light reflective material. The surface of the wall includes a top surface provided at a higher position than the top surface of the wavelength conversion layer, and an inner surface forming the opening portion. The wall includes a first portion surrounding the wavelength conversion layer, and a second portion provided over the first portion and surrounding the first portion. The opening portion is hollow. An angle of a corner portion between the top surface and the inner surface of the wall is in a range of 90 degrees or greater and less than 180 degrees.

公开(公告)号：US12272773B2

公开(公告)日：2025-04-08

申请号：US18511451

申请日：2023-11-16

Applicant: Nichia Corporation

Inventor： Hiroshi Miyairi ,  Yoshimi Katsumoto ,  Takayuki Igarashi ,  Yoshifumi Hodono ,  Shinya Endo

IPC: H01L33/50 ,  H01L25/075 ,  H01L33/54 ,  H01L33/60 ,  H01L33/62

Abstract: A light emitting device includes: a substrate; a light emitting element; a wavelength conversion layer; and a wall surrounding the wavelength conversion layer, having an opening portion exposing at least a part of a top surface of the wavelength conversion layer, and containing a light reflective material. The surface of the wall includes a top surface provided at a higher position than the top surface of the wavelength conversion layer, and an inner surface forming the opening portion. The wall includes a first portion surrounding the wavelength conversion layer, and a second portion provided over the first portion and surrounding the first portion. The opening portion is hollow. An angle of a corner portion between the top surface and the inner surface of the wall is in a range of 90 degrees or greater and less than 180 degrees.

公开(公告)号：US10794558B2

公开(公告)日：2020-10-06

申请号：US16532255

申请日：2019-08-05

Applicant: NICHIA CORPORATION

Inventor： Hiroshi Miyairi ,  Shinya Endo

IPC: F21S41/143 ,  F21S41/153 ,  F21S41/36 ,  H01L33/50 ,  H01L33/60 ,  F21K9/64 ,  F21Y115/10

Abstract: A light emitting device includes: a substrate; a plurality of light emitting elements mounted on the substrate; a plurality of wavelength conversion members, each containing phosphor particles and being disposed on a respective one of the light emitting elements; and a plurality of light reflecting members disposed between adjacent ones of the wavelength conversion members to reflect light emitted from the light emitting elements. The wavelength conversion members and the light reflecting members are included in a collective body that has a curved upper surface having a concave shape.

公开(公告)号：US11137123B2

公开(公告)日：2021-10-05

申请号：US17006136

申请日：2020-08-28

Applicant: NICHIA CORPORATION

Inventor： Hiroshi Miyairi ,  Shinya Endo

IPC: F21S41/143 ,  F21S41/153 ,  F21S41/36 ,  H01L33/50 ,  H01L33/60 ,  F21K9/64 ,  F21Y115/10

Abstract: A method of manufacturing a light emitting device includes: bonding a wavelength conversion sheet containing phosphor particles onto upper surfaces of light emitting elements mounted on a substrate; dividing the wavelength conversion sheet into a plurality of wavelength conversion members, each corresponding to one of the light emitting elements, by cutting from an upper surface of the wavelength conversion sheet; forming light reflecting members between adjacent ones of the wavelength conversion members to reflect light emitted from the light emitting elements; and machining an upper surface of a collective body including the wavelength conversion members and the light reflecting members into a curved surface having a concave shape.

公开(公告)号：US10991859B2

公开(公告)日：2021-04-27

申请号：US16673875

申请日：2019-11-04

Applicant: NICHIA CORPORATION

Inventor： Shinya Endo

IPC: H01L33/58 ,  H01L33/50 ,  H01L33/62 ,  H01L25/075 ,  H01L33/60

Abstract: A light-emitting device includes a light-emitting element; a first light-transmissive member bonded to the light-emitting element, containing a wavelength conversion member, and including a lower surface having an area larger than an upper surface of the light-emitting element; a second light-transmissive member bonded to an upper surface of the first light-transmissive member, including a lower surface having an area larger than the upper surface of the first light-transmissive member and having a periphery located outward of the upper surface of the first light-transmissive member, and an upper surface having an area smaller than the upper surface of the light-emitting element; a first light-guiding member over a lateral surface of the light-emitting element and the periphery of the lower surface of the first light-transmissive member; and a second light-guiding member over a lateral surface of the first light-transmissive member and the periphery of the lower surface of the second light-transmissive member.