公开(公告)号：US20190371986A1

公开(公告)日：2019-12-05

申请号：US16545770

申请日：2019-08-20

Applicant: NICHIA CORPORATION

Inventor： Tadaaki IKEDA ,  Toru HASHIMOTO

IPC: H01L33/60 ,  H01L33/50 ,  H01L33/48 ,  H01L33/56 ,  H01L33/54 ,  F21V7/22

Abstract: A light emitting device includes: a rectangular substrate, a light emitting element, a reflective member disposed at one or more lateral sides of the light emitting element while being away from therefrom, a light guide member, and a light transmissive member on the light guide member. The reflective member includes one or more first reflective members opposing lateral faces of the light emitting element, and a second reflective member outside the first reflective member. The first reflective members have inner lateral faces opposing each other each having an oblique or curved portion slanted so that a distance therebetween increases towards the light transmissive member from a side close to the substrate. The second reflective member covers outer lateral faces of the light transmissive member and the first reflective members, and an upper face of the second reflective member is flush with an upper face of the light transmissive member.

公开(公告)号：US20190013443A1

公开(公告)日：2019-01-10

申请号：US16027950

申请日：2018-07-05

Applicant: NICHIA CORPORATION

Inventor： Takuya NAKABAYASHI ,  Tadaaki IKEDA

IPC: H01L33/48 ,  H01L33/60 ,  H01L33/62

CPC classification number: H01L33/486 ,  H01L25/0753 ,  H01L33/44 ,  H01L33/50 ,  H01L33/507 ,  H01L33/60 ,  H01L33/62

Abstract: A light-emitting device includes a substrate including a base member having an upper surface having a substantially rectangular shape, a lower surface opposite to the upper surface, a first longer lateral surface, a second longer lateral surface opposite to the first longer lateral surface, a first shorter lateral surface, and a second shorter lateral surface opposite to the first shorter lateral surface, first wirings disposed on the upper surface, and second wirings disposed on the lower surface and each electrically connected with a respective one of the first wirings; at least one light-emitting element; and a light-reflective covering member covering lateral surfaces of the light-emitting element and the upper surface of the base member. The base member has at least one first recess open at the upper surface and the first longer lateral surface. Surfaces defining the at least one first recess are covered with the covering member.

公开(公告)号：US20180331263A1

公开(公告)日：2018-11-15

申请号：US15977580

申请日：2018-05-11

Applicant: NICHIA CORPORATION

Inventor： Tadaaki IKEDA ,  Toru HASHIMOTO

IPC: H01L33/60 ,  H01L33/50 ,  H01L33/48 ,  F21V7/22 ,  H01L33/56 ,  H01L33/54

CPC classification number: H01L33/60 ,  F21V7/22 ,  H01L33/486 ,  H01L33/50 ,  H01L33/54 ,  H01L33/56 ,  H01L33/58 ,  H01L2933/0033 ,  H01L2933/0041 ,  H01L2933/005

Abstract: A light emitting device includes: a rectangular substrate, a light emitting element, a reflective member disposed at one or more lateral sides of the light emitting element while being away from therefrom, a light guide member, and a light transmissive member on the light guide member. The reflective member includes one or more first reflective members opposing lateral faces of the light emitting element, and a second reflective member outside the first reflective member. The first reflective members have inner lateral faces opposing each other each having an oblique or curved portion slanted so that a distance therebetween increases towards the light transmissive member from a side close to the substrate. The second reflective member covers outer lateral faces of the light transmissive member and the first reflective members, and an upper face of the second reflective member is flush with an upper face of the light transmissive member.

公开(公告)号：US20210098663A1

公开(公告)日：2021-04-01

申请号：US17029957

申请日：2020-09-23

Applicant: NICHIA CORPORATION

Inventor： Tadaaki IKEDA ,  Yukiko YOKOTE

IPC: H01L33/50 ,  H01L33/60 ,  H01L33/48 ,  H01L33/62

Abstract: A light emitting device includes a first light emitting element, a second light emitting element, a first light-transmissive member, and a first wavelength converting member. The first light emitting element has a first light emitting element first surface at which a first n-side electrode and a first p-side electrode are disposed, and a first light emitting element second surface. The second light emitting element has a second light emitting element first surface at which a second n-side electrode and a second p-side electrode are disposed, and a second light emitting element second surface. The first light-transmissive member covers the first light emitting element fourth surface of the first light emitting element and a second light emitting element fourth surface of the second light emitting element. The first wavelength converting member is disposed on the first light-transmissive member.

公开(公告)号：US20180226549A1

公开(公告)日：2018-08-09

申请号：US15888266

申请日：2018-02-05

Applicant: NICHIA CORPORATION

Inventor： Takuya NAKABAYASHI ,  Tadaaki IKEDA

IPC: H01L33/60 ,  H01L25/075 ,  H01L33/62 ,  H01L33/50 ,  H01L23/00 ,  C09K11/77 ,  C09K11/08 ,  C09K11/61

CPC classification number: H01L33/60 ,  C09K11/0883 ,  C09K11/617 ,  C09K11/7734 ,  H01L23/562 ,  H01L25/0753 ,  H01L33/486 ,  H01L33/502 ,  H01L33/62 ,  H01L33/642

Abstract: A light emitting device includes a mounting board, first and second light emitting elements and a light reflective covering member. The mounting board includes an insulating base, first and second lands arranged, and an intermediate part arranged between the first and second lands. The first and second light emitting elements are flip-chip mounted on the first and second lands, respectively. The light reflective covering member is provided above the intermediate part and covers lateral surfaces of the first and second light emitting elements. The light reflective covering member defines a recess part arranged above the intermediate part with a bottom of the recess part being positioned below top surfaces of the first and second light emitting elements and above the top surface of the intermediate part, and a surface of the light reflective covering member defining the recess part constitutes a part of an outer surface of the light emitting device.

公开(公告)号：US20170294561A1

公开(公告)日：2017-10-12

申请号：US15479854

申请日：2017-04-05

Applicant: NICHIA CORPORATION

Inventor： Tadaaki IKEDA ,  Takuya NAKABAYASHI

IPC: H01L33/50 ,  H01L33/60 ,  C08K3/34 ,  C09K11/77 ,  C09K11/08 ,  C09K11/02 ,  H01L33/56 ,  C09K11/61

CPC classification number: H01L33/504 ,  C08K3/34 ,  C09K11/02 ,  C09K11/025 ,  C09K11/0883 ,  C09K11/615 ,  C09K11/617 ,  C09K11/7734 ,  H01L33/46 ,  H01L33/56 ,  H01L33/60 ,  H01L2933/0091

Abstract: A light emitting device is provided. The light emitting device includes a light emitting element, which emits blue light, and a light transmissive member having a first principal face bonded to the light emitting element and a second principal face opposite the first principal face. The light transmissive member has a light transmissive base material and wavelength conversion substances, which are contained in the base material and which absorb the light from the light emitting element and emit light. The wavelength conversion substances are localized in the base material towards the first principal face, and include a first phosphor which emits green to yellow light and a second phosphor which emits red light. The first phosphor is more localized towards the first principal face than the second phosphor. The second phosphor is a manganese-activated fluoride phosphor.

公开(公告)号：US20220271204A1

公开(公告)日：2022-08-25

申请号：US17744361

申请日：2022-05-13

Applicant: Nichia Corporation

Inventor： Tadaaki IKEDA ,  Yukiko YOKOTE

IPC: H01L33/50 ,  H01L33/62 ,  H01L33/48 ,  H01L33/60

Abstract: A light emitting device includes: a mounting substrate comprising a mounting substrate first surface; a first light emitting element configured to emit light having a first peak wavelength; a second light emitting element configured to emit light having a second peak wavelength longer than the first peak wavelength; a first light-transmissive member; and a first wavelength converting member located on the first light-transmissive member.

公开(公告)号：US20210257524A1

公开(公告)日：2021-08-19

申请号：US17233767

申请日：2021-04-19

Applicant: NICHIA CORPORATION

Inventor： Yoshiki INOUE ,  Naoto FURUHA ,  Tadaaki IKEDA

IPC: H01L33/60 ,  H01L33/50 ,  H01L33/38 ,  H01L33/62 ,  H01L25/075

Abstract: A method of manufacturing a light emitting element includes: providing a first light emitting part and a second light emitting part, the first light emitting part comprising a first base member and a first semiconductor layered body, the second light emitting part comprising a second base member and a second semiconductor layered body; bonding the first and second light emitting parts to each other such that the first base member and the second base member are disposed between the first semiconductor layered body and the second semiconductor layered body; disposing a light reflecting member to cover the bonded first and second light emitting parts; removing a portion of the light reflecting member to expose surfaces of the first and second base members; and disposing a wavelength conversion member on the exposed surface of the first base member and the exposed surface of the second base member.

公开(公告)号：US20210050488A1

公开(公告)日：2021-02-18

申请号：US17086975

申请日：2020-11-02

Applicant: NICHIA CORPORATION

Inventor： Takuya NAKABAYASHI ,  Tadaaki IKEDA ,  Toru HASHIMOTO ,  Yukiko YOKOTE

IPC: H01L33/50 ,  H01L25/075 ,  H01L33/58 ,  H01L33/62 ,  H01L33/64 ,  C09K11/61 ,  H01L33/60

Abstract: A light emitting device includes a first light emitting element including a rectangular first light extraction surface, a second light emitting element including a rectangular second light extraction surface and emitting light having an emission peak wavelength different from an emission peak wavelength of the first light emitting element, and a light-transmissive member covering the first light extraction surface and the second light extraction surface. The light-transmissive member includes a first light-transmissive layer facing the first light extraction surface and the second light extraction surface, a wavelength conversion layer located on the first light-transmissive layer, and a second light-transmissive layer located on the wavelength conversion layer. The first light-transmissive layer contains a first matrix and first diffusive particles. The wavelength conversion layer contains a second matrix and wavelength conversion particles. The second light-transmissive layer contains a third matrix and second diffusive particles.

公开(公告)号：US20200303599A1

公开(公告)日：2020-09-24

申请号：US16898388

申请日：2020-06-10

Applicant: NICHIA CORPORATION

Inventor： Tadaaki IKEDA ,  Takuya NAKABAYASHI

IPC: H01L33/50 ,  C09K11/02 ,  C09K11/61 ,  C08K3/34 ,  C09K11/08 ,  C09K11/77 ,  H01L33/56 ,  H01L33/60

Abstract: A light emitting device is provided. The light emitting device includes a light emitting element, which emits blue light, and a light transmissive member having a first principal face bonded to the light emitting element and a second principal face opposite the first principal face. The light transmissive member has a light transmissive base material and wavelength conversion substances, which are contained in the base material and which absorb the light from the light emitting element and emit light. The wavelength conversion substances are localized in the base material towards the first principal face, and include a first phosphor which emits green to yellow light and a second phosphor which emits red light. The first phosphor is more localized towards the first principal face than the second phosphor. The second phosphor is a manganese-activated fluoride phosphor.