公开(公告)号：US20230238490A1

公开(公告)日：2023-07-27

申请号：US18295589

申请日：2023-04-04

Applicant: NICHIA CORPORATION

Inventor： Takuya NAKABAYASHI ,  Tomokazu MARUYAMA ,  Tetsuya ISHIKAWA

IPC: H01L33/50 ,  H01L33/36 ,  H01L33/56 ,  H01L33/62 ,  H01L33/34 ,  H01L33/60 ,  H01L33/48

CPC classification number: H01L33/50 ,  H01L33/36 ,  H01L33/56 ,  H01L33/62 ,  H01L33/34 ,  H01L33/60 ,  H01L33/486

Abstract: A light-emitting device includes a substrate comprising a base member, a first wiring, a second wiring, and a via hole; at least one light-emitting element electrically connected to and disposed on the first wiring; and a covering member having light reflectivity and covering a lateral surface of the light-emitting element and a front surface of the substrate. The base member defines a plurality of depressed portions separated from the via hole in a front view and opening on a back surface and a bottom surface of the base member. The substrate includes a third wiring covering at least one of inner walls of the plurality of depressed portions and electrically connected to the second wiring. A depth of each of the plurality of depressed portions defined from the back surface toward the front surface is larger on a bottom surface side than on an upper surface side of the base member.

公开(公告)号：US20210305218A1

公开(公告)日：2021-09-30

申请号：US17209015

申请日：2021-03-22

Applicant: NICHIA CORPORATION

Inventor： Tadaaki IKEDA ,  Yuki KAGEYAMA ,  Tetsuya ISHIKAWA ,  Toshifumi IMURA

IPC: H01L25/075 ,  H01L33/58 ,  H01L33/54

Abstract: A light emitting device includes light emitting elements, light-transmissive members, a covering member, at least one first protrusion, and two second protrusions. The light emitting elements are aligned in a first direction. The light-transmissive members are respectively disposed on upper surfaces of the light emitting elements. The covering member includes at least one first covering portion and two second covering portions. The at least one first covering portion is arranged between adjacent ones of the light-transmissive members, and the second covering portions are arranged at distal ends of the light emitting device in the first direction with the light-transmissive members being arranged between the second covering portions. The at least one first protrusion is arranged on an upper surface of the at least one first covering portion and being spaced apart from the light-transmissive members. The second protrusions respectively arranged on upper surfaces of the second covering portions.

公开(公告)号：US20200185575A1

公开(公告)日：2020-06-11

申请号：US16793018

申请日：2020-02-18

Applicant: NICHIA CORPORATION

Inventor： Kenichi AOYAGI ,  Takashi KAIDE ,  Takuya NAKABAYASHI ,  Tetsuya ISHIKAWA ,  Shoji HOSOKAWA

IPC: H01L33/50 ,  C09K11/77 ,  C09K11/08

Abstract: A wavelength converting member comprising a first wavelength converting layer containing: a first fluorescent material having a light emission peak wavelength in a range of 620 nm or more and 660 nm or less; a second fluorescent material having a light emission peak wavelength in a range of 510 nm or more and 560 nm or less; and a resin, wherein the average particle diameter, as measured according to a Fisher Sub-Sieve Sizer method, of the first fluorescent material is in a range of 2 μm or more and 30 μm or less, wherein the second fluorescent material comprises a β-SiAlON fluorescent material, the circularity of the β-SiAlON fluorescent material is 0.7 or more, and the volume average particle diameter, as measured according to a laser diffraction scattering particle size distribution measuring method, of the β-SiAlON fluorescent material is in a range of 2 μm or more and 30 μm or less, and wherein the thickness of the first wavelength converting layer is in a range of 50 μm or more and 200 μm or less.

公开(公告)号：US20190305193A1

公开(公告)日：2019-10-03

申请号：US16369046

申请日：2019-03-29

Applicant: NICHIA CORPORATION

Inventor： Kenichi AOYAGI ,  Takashi KAIDE ,  Takuya NAKABAYASHI ,  Tetsuya ISHIKAWA ,  Shoji HOSOKAWA

IPC: H01L33/50 ,  C09K11/08 ,  C09K11/77

Abstract: A wavelength converting member comprising a first wavelength converting layer containing: a first fluorescent material having a light emission peak wavelength in a range of 620 nm or more and 660 nm or less; a second fluorescent material having a light emission peak wavelength in a range of 510 nm or more and 560 nm or less; and a resin, wherein the average particle diameter, as measured according to a Fisher Sub-Sieve Sizer method, of the first fluorescent material is in a range of 2 μm or more and 30 μm or less, wherein the second fluorescent material comprises a β-SiAlON fluorescent material, the circularity of the β-SiAlON fluorescent material is 0.7 or more, and the volume average particle diameter, as measured according to a laser diffraction scattering particle size distribution measuring method, of the β-SiAlON fluorescent material is in a range of 2 μm or more and 30 μm or less, and wherein the thickness of the first wavelength converting layer is in a range of 50 μm or more and 200 μm or less.

公开(公告)号：US20180315897A1

公开(公告)日：2018-11-01

申请号：US15965415

申请日：2018-04-27

Applicant: NICHIA CORPORATION

Inventor： Takuya NAKABAYASHI ,  Tomokazu MARUYAMA ,  Tetsuya ISHIKAWA

IPC: H01L33/50 ,  H01L33/36 ,  H01L33/60 ,  H01L33/62 ,  H01L33/34 ,  H01L33/56

CPC classification number: H01L33/486 ,  H01L33/62

Abstract: A light-emitting device includes a substrate comprising a base member, a first wiring, a second wiring, and a via hole; at least one light-emitting element electrically connected to and disposed on the first wiring; and a covering member having light reflectivity and covering a lateral surface of the light-emitting element and a front surface of the substrate. The base member defines a plurality of depressed portions separated from the via hole in a front view and opening on a back surface and a bottom surface of the base member. The substrate includes a third wiring covering at least one of inner walls of the plurality of depressed portions and electrically connected to the second wiring. A depth of each of the plurality of depressed portions defined from the back surface toward the front surface is larger on a bottom surface side than on an upper surface side of the base member.

公开(公告)号：US20160284959A1

公开(公告)日：2016-09-29

申请号：US15081359

申请日：2016-03-25

Applicant: NICHIA CORPORATION

Inventor： Tetsuya ISHIKAWA

IPC: H01L33/62 ,  H01L33/50 ,  H01L33/56 ,  H01L33/48 ,  H01L33/54

CPC classification number: H01L25/0753 ,  H01L33/486 ,  H01L33/504 ,  H01L2224/45144 ,  H01L2224/48137 ,  H01L2224/48247 ,  H01L2224/48257 ,  H01L2924/181 ,  H01L2924/00012 ,  H01L2924/00

Abstract: A light emitting device of a side-surface light emission type includes a package defining a recess and having a shape elongated in a lateral direction, the package including a pair of lead electrodes arranged next to each other in the lateral direction and forming main portions of a bottom of the recess, and a molded body integrally formed with the pair of lead electrodes and defining sidewalls of the recess, and a light emitting element disposed on at least one of the pair of lead electrodes at the bottom of the recess. The molded body has a reinforcing portion connecting between two sidewalls of the recess opposite to each other in a longitudinal direction. The reinforcing portion is made of two end portions respectively connected to the two sidewalls, and an intermediate portion provided between the two end portions.

Abstract translation: 侧面发光型发光器件包括限定凹部并且具有沿横向延伸的形状的封装，所述封装包括在横向上彼此相邻布置的一对引线电极，并且形成主要部分 所述凹部的底部以及与所述一对引线电极一体形成并限定所述凹部的侧壁的模制体以及设置在所述凹部的所述一对引线电极中的至少一个上的发光元件。 成型体具有在纵向彼此相对的凹部的两个侧壁之间连接的加强部。 加强部由分别连接到两个侧壁的两个端部和设置在两个端部之间的中间部分制成。