公开(公告)号：US20210013187A1

公开(公告)日：2021-01-14

申请号：US17039044

申请日：2020-09-30

Applicant: NICHIA CORPORATION

Inventor： Takuya NAKABAYASHI ,  Yukiko YOKOTE

IPC: H01L25/075 ,  H01L33/62 ,  H01L33/54 ,  H01L33/50 ,  H01L33/48

Abstract: A light emitting device includes: a substrate including a base member including an upper surface, a lower surface and one or more lateral surfaces, and defining a recess that is opened at the upper surface and the lateral surfaces and surrounds an outer perimeter of the upper surface; a first light emitting element; a second light emitting element; a light guide member covering the first and the second light emitting elements and the upper surface of the base member; and a first reflective member having a closed-ring shape surrounding the upper surface of the base member and the light guide member, a portion of the first reflective member being located in the recess. At least one of the lateral surfaces of the base member and corresponding at least one of one or more outer lateral surfaces of the first reflective member are in the same plane.

公开(公告)号：US20200321501A1

公开(公告)日：2020-10-08

申请号：US16906687

申请日：2020-06-19

Applicant: NICHIA CORPORATION

Inventor： Takuya NAKABAYASHI ,  Gensui TAMURA

IPC: H01L33/64 ,  H01L33/48 ,  H01L33/62 ,  H01L33/60

Abstract: A light emitting device includes a substrate including a base member including a front surface, a rear surface opposite to the front surface, a bottom surface perpendicular to the front surface, and a top surface opposite to the bottom surface, a first wiring portion located on the front surface, and a second wiring portion located on the rear surface; a light emitting element electrically connected with the first wiring portion; and a first reflective member covering a lateral surface of the light emitting element and the front surface of the base member. The base member has a recessed portion opened on the rear surface and the bottom surface. The substrate includes a third wiring portion covering an inner wall of the recessed portion and electrically connected with the second wiring portion, and a via in contact with the first wiring portion, the second wiring portion and the third wiring portion.

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：US20200091394A1

公开(公告)日：2020-03-19

申请号：US16691612

申请日：2019-11-22

Applicant: NICHIA CORPORATION

Inventor： Shimpei SASAOKA ,  Takuya NAKABAYASHI

IPC: H01L33/62 ,  H05K1/03 ,  H01L33/38 ,  H01L33/48 ,  H01L33/56 ,  H01L33/54

Abstract: A light emitting device including a molded package having leads including a pair of a first lead and a second lead, a molded resin, and a recess, where an upper surface of the leads is partially exposed from a bottom surface of the recess. The device further including a light emitting component mounted on the bottom surface, and at least one sealing member located in the recess to cover the light emitting component. At least one of the first lead and the second lead has a groove on an upper surface thereof, where the groove is positioned so as to correspond to a corner on the bottom surface of the recess in a cross sectional view. A portion of the molded resin located within the groove is exposed from the bottom surface. A surface of the corner is composed of a curved surface, and the sealing member covers the corner.

公开(公告)号：US20200044115A1

公开(公告)日：2020-02-06

申请号：US16526263

申请日：2019-07-30

Applicant: NICHIA CORPORATION

Inventor： Toru HASHIMOTO ,  Takuya NAKABAYASHI

IPC: H01L33/38 ,  H01L33/40 ,  H01L23/00

Abstract: A light-emitting device includes a first light-emitting element, a second light-emitting element having a peak emission wavelength different from that of the first light-emitting element, a light-guide member covering a light extracting surface and lateral surfaces of the first light-emitting element and a light extracting surface and lateral surfaces of the second light-emitting element, and a wavelength conversion layer continuously covering the light extracting surface of each of the first and second light-emitting elements and disposed apart from each of the first and second light-emitting elements, and a first reflective member covering outer lateral surfaces of the light-guide member. An angle defined by an active layer of the first light-emitting element and an active layer of the second light-emitting element is less than 180° at a wavelength conversion layer side.

公开(公告)号：US20190221541A1

公开(公告)日：2019-07-18

申请号：US16365007

申请日：2019-03-26

Applicant: NICHIA CORPORATION

Inventor： Hiroto TAMAKI ,  Takuya NAKABAYASHI

IPC: H01L23/00 ,  H01L33/50

CPC classification number: H01L24/97 ,  H01L33/486 ,  H01L33/505 ,  H01L33/56 ,  H01L2224/16225 ,  H01L2224/48091 ,  H01L2933/0041 ,  H01L2924/00014

Abstract: A light emitting device includes first and second light emitting elements, first and second color conversion material layers, a support member and a light reflective member. The first color conversion material layer has a first color conversion surface facing a first light extraction surface of the first light emitting element. The second color conversion material layer has a second color conversion surface facing a second light extraction surface of the second light emitting element. The support member supports the first and second color conversion material layers. The light reflective member covers a first side surface of the first light emitting element and a second side surface of the second light emitting element. At least a part of an upper surface of the light reflective member is positioned closer to the support member than the first color conversion material layer and the second color conversion material layer.

公开(公告)号：US20190035984A1

公开(公告)日：2019-01-31

申请号：US16134002

申请日：2018-09-18

Applicant: NICHIA CORPORATION

Inventor： Tadaaki IKEDA ,  Takuya NAKABAYASHI

IPC: H01L33/50 ,  C09K11/61 ,  C09K11/02 ,  H01L33/60 ,  H01L33/56 ,  C09K11/77 ,  C08K3/34 ,  C09K11/08 ,  H01L33/46

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：US20180254394A1

公开(公告)日：2018-09-06

申请号：US15968806

申请日：2018-05-02

Applicant: NICHIA CORPORATION

Inventor： Shimpei SASAOKA ,  Takuya NAKABAYASHI

IPC: H01L33/62 ,  H01L25/13 ,  H01L25/075 ,  H01L33/48

CPC classification number: H01L33/62 ,  H01L24/45 ,  H01L24/48 ,  H01L24/49 ,  H01L25/0753 ,  H01L25/13 ,  H01L27/156 ,  H01L33/486 ,  H01L2224/45124 ,  H01L2224/45139 ,  H01L2224/45144 ,  H01L2224/45147 ,  H01L2224/45169 ,  H01L2224/48091 ,  H01L2224/48247 ,  H01L2224/4909 ,  H01L2224/49107 ,  H01L2924/00014 ,  H01L2924/181 ,  H01L2924/00 ,  H01L2224/45015 ,  H01L2924/207 ,  H01L2924/00012

Abstract: A light emitting apparatus includes a package having a long-length direction and a short-length direction perpendicular to the long-length direction as viewed in plan view. The package includes first and second leadframes and a resin portion. The first leadframe has a first leadframe main portion and a first leadframe extension portion which has narrower width than that of the first leadframe main portion. The second leadframe has a second leadframe main portion and a second leadframe extension portion which has narrower width than that of the second leadframe main portion. An inclined portion is formed between the first leadframe and the second leadframe as viewed in plan view. An upper end of the inclined portion is shifted from a lower end of the inclined portion.

公开(公告)号：US20180151786A1

公开(公告)日：2018-05-31

申请号：US15879812

申请日：2018-01-25

Applicant: NICHIA CORPORATION

Inventor： Suguru BEPPU ,  Yoichi BANDO ,  Hiroto TAMAKI ,  Takuya NAKABAYASHI

IPC: H01L33/60 ,  H01L33/50

CPC classification number: H01L33/60 ,  H01L33/50 ,  H01L2224/73253 ,  H01L2933/0033 ,  H01L2933/0041 ,  H01L2933/0058

Abstract: A light emitting device includes a semiconductor light emitting element; and a light reflective member having a multilayer structure and covering the side faces of the semiconductor light emitting element. The light reflective member includes: a first layer disposed on an inner, semiconductor light emitting element side, the first layer comprising a light-transmissive resin containing a light reflective substance, and a second layer disposed in contact with an outer side of the first layer, the second layer comprising a light-transmissive resin containing the light reflective substance at a lower content than that of the first layer.

公开(公告)号：US20170324013A1

公开(公告)日：2017-11-09

申请号：US15657354

申请日：2017-07-24

Applicant: NICHIA CORPORATION

Inventor： Takuya NAKABAYASHI

IPC: H01L33/62 ,  H01L33/10 ,  B60Q1/14 ,  B60Q1/16 ,  H01L25/075 ,  H01L33/54 ,  F21S8/10 ,  H05K1/11 ,  H01L33/08 ,  F21Y2105/10 ,  F21Y2105/12 ,  H01L33/38 ,  H05K1/02

CPC classification number: H01L33/62 ,  B60Q1/1423 ,  B60Q1/16 ,  B60Q2300/42 ,  B60Q2300/45 ,  F21S41/143 ,  F21S41/18 ,  F21S41/663 ,  F21Y2105/10 ,  F21Y2105/12 ,  H01L25/0753 ,  H01L33/08 ,  H01L33/10 ,  H01L33/38 ,  H01L33/54 ,  H01L2224/16225 ,  H01L2924/0002 ,  H01L2924/181 ,  H01L2924/18161 ,  H05K1/0287 ,  H05K1/111 ,  H05K2201/09663 ,  H05K2201/10106 ,  Y02P70/611 ,  H01L2924/00012 ,  H01L2924/00

Abstract: A light emitting device includes a substrate, a plurality of first wiring members, a plurality of second wiring members and a plurality of light emitting elements. The first wiring members extend in a first direction. The second wiring members extend in a second direction. Each of the second wiring members is segmented into a plurality of second wiring portions. The light emitting elements are disposed along the second direction. A first electrode of the light emitting element is connected to a corresponding one of the first wiring members. A second electrode of the light emitting element has a first connection part and a second connection part that is linked to the first connection part. The first connection part and the second connection part are connected to a corresponding one of the second wiring members and bridge at least two of the segmented second wiring portions in the second direction.