公开(公告)号：US20230067018A1

公开(公告)日：2023-03-02

申请号：US17974666

申请日：2022-10-27

Applicant: NICHIA CORPORATION

Inventor： Motokazu YAMADA ,  Yuichi YAMADA

IPC: H01L25/075 ,  H01L33/50 ,  H01L33/54 ,  H01L33/60 ,  H01L33/62 ,  G02F1/13357 ,  H01L33/46 ,  F21V7/00 ,  F21V9/08 ,  F21V23/00 ,  H01L33/58

Abstract: A integrated light-emitting device including: a base including a conductive wiring; a plurality of light-emitting devices mounted on the base and configured to emit a first light, each of the light-emitting devices comprising a light-emitting element and a encapsulant covering the light-emitting element; a light reflective film provided on an upper surface of the light-emitting element; and a plurality of light reflective members disposed between adjacent ones of the light-emitting devices. A ratio (H/W) of a height (H) of the encapsulant to a width (W) of a bottom surface of the encapsulant is less than 0.5. Each of the light-emitting devices has a batwing light distribution characteristics.

公开(公告)号：US20220404671A1

公开(公告)日：2022-12-22

申请号：US17837984

申请日：2022-06-10

Applicant: NICHIA CORPORATION

Inventor： Koki SHIBAI ,  Yoshihiro SHO ,  Motokazu YAMADA ,  Naoya KASHIWAGI ,  Shimpei SASAOKA

IPC: G02F1/13357

Abstract: A planar light source includes a substrate, light sources, and a partitioning member. The partitioning member defines partitioned regions arranged in a first direction and in a second direction that intersects the first direction. At least one of the light sources is arranged in a corresponding one of the partitioned regions. The partitioning member includes a plurality of first wall parts defining a plurality of first ridges extending in the first direction, and a plurality of second wall parts defining a plurality of second ridges extending in the second direction. The first wall parts define at least one first cut on at least one of the first ridges. At least one of the partitioned regions is surrounded by the first ridges and the second ridges in a plan view and includes an opposing pair of the first wall parts and an opposing pair of the second wall parts.

公开(公告)号：US20210317970A1

公开(公告)日：2021-10-14

申请号：US17355798

申请日：2021-06-23

Applicant: NICHIA CORPORATION

Inventor： Motokazu YAMADA

IPC: F21V7/00 ,  H01L33/56 ,  H01L33/50 ,  H01L33/46 ,  H01L33/00 ,  H01L25/075

Abstract: A light-emitting device includes a base member, a plurality of light sources on or above an upper surface of the base member, and a reflector that comprises a plurality of surrounding portions. Each of the plurality of surrounding portions surrounds a respective one of the plurality of light sources in a plan view. Each of the plurality of surrounding portions has inclined lateral surfaces widened upward. Intervals between adjacent ones of the plurality of light sources are constant in the plan view. Upper peripheries of the inclined lateral surfaces of each of the plurality of surrounding portions define an opening having a substantially rectangular shape. The plurality of surrounding portions include a plurality of first surrounding portions and a plurality of second surrounding portions surrounding the plurality of first surrounding portions. An area of the opening of each of the plurality of second surrounding portions is smaller than an area of the opening of each of the plurality of first surrounding portions.

公开(公告)号：US20210280754A1

公开(公告)日：2021-09-09

申请号：US17314045

申请日：2021-05-07

Applicant: NICHIA CORPORATION

Inventor： Motokazu YAMADA ,  Yuichi YAMADA

IPC: H01L33/54

Abstract: A light emitting device includes at least one light emitting element and at least one light transmissive sealing member. Each of the at least one light emitting element has a bottom surface electrically connected to a conductor wiring and a top surface opposite to the bottom surface in a height direction along a height of the light emitting device. The at least one light transmissive sealing member covers the at least one light emitting element, respectively. Each of the at least one light transmissive sealing member has a projection shape with a height in the height direction and a width in a width direction perpendicular to the height direction. The height is greater than the width. Each of the at least one light transmissive sealing member includes a wavelength conversion member.

公开(公告)号：US20200318808A1

公开(公告)日：2020-10-08

申请号：US16784616

申请日：2020-02-07

Applicant: NICHIA CORPORATION

Inventor： Motokazu YAMADA ,  Yuichi YAMADA

IPC: F21V7/00 ,  H01L33/62 ,  H01L33/54 ,  H01L33/50

Abstract: A light-emitting device includes: a base member that comprises conductor wirings; a light-emitting element that is mounted on the base member and emits first light; a wavelength conversion member that is disposed on or above an upper surface of the light-emitting element and is adapted to absorb at least part of the first light and emit second light with a wavelength longer than a wavelength of the first light; a light-reflective film that is disposed on an upper surface of the wavelength conversion member; and an encapsulating member that covers the light-emitting element, the wavelength conversion member, and the light-reflective film. A ratio (H/W) of a height (H) to a width (W) of the encapsulating member is smaller than 0.5.

公开(公告)号：US20200313043A1

公开(公告)日：2020-10-01

申请号：US16897435

申请日：2020-06-10

Applicant: NICHIA CORPORATION

Inventor： Yuichi YAMADA ,  Motokazu YAMADA

IPC: H01L33/44 ,  H01L33/46 ,  H01L33/38 ,  H01L33/50 ,  H01L33/54 ,  H01L33/62

Abstract: A light emitting device includes: a substrate; a light emitting element disposed on the substrate, the light emitting element having an upper surface and a lateral surface; a reflecting layer located on the upper surface of the light emitting element; a first light-transmissive member having a first surface in contact with the lateral surface of the light emitting element, and a second surface that is inclined toward the substrate in a direction outward from the light emitting element; and a second light-transmissive member in contact with the second surface and covering the light emitting element. A refractive index of the first light-transmissive is smaller than a refractive index of the second light-transmissive member.

公开(公告)号：US20200278103A1

公开(公告)日：2020-09-03

申请号：US16878191

申请日：2020-05-19

Applicant: NICHIA CORPORATION

Inventor： Takeshi TAMURA ,  Hiroshi FUJIMORI ,  Motokazu YAMADA

IPC: F21V13/08 ,  G02F1/13357 ,  H01L25/075 ,  F21V3/02 ,  F21V7/00 ,  F21V9/08

Abstract: A light emitting device includes a plurality of light sources, a substrate, a partitioning member, a diffuser sheet, a plurality of first reflectors, and a second reflector. Each of the light sources includes a light emitting element and an encapsulant covering the light emitting element. The light sources are disposed on the substrate. The partitioning member surrounds the light sources and has a plurality of areas formed by walls having top parts. The walls include surfaces inclined with respect to an upper surface of the substrate to spread out from bottom parts toward the top parts. The diffuser sheet is provided over the partitioning member. The first reflectors are provided directly over the light sources, on an upper surface or a lower surface of the diffuser sheet. The second reflector is provided directly over the top parts, on the upper surface or the lower surface of the diffuser sheet.

公开(公告)号：US20190252583A1

公开(公告)日：2019-08-15

申请号：US16395321

申请日：2019-04-26

Applicant: NICHIA CORPORATION

Inventor： Mototaka INOBE ,  Motokazu YAMADA ,  Kazuhiro KAMADA

IPC: H01L33/60 ,  H01L33/56 ,  H01L33/32 ,  H01L33/20 ,  H01L33/62 ,  H01L33/52 ,  H01L33/54

CPC classification number: H01L33/60 ,  H01L25/0753 ,  H01L33/20 ,  H01L33/32 ,  H01L33/52 ,  H01L33/54 ,  H01L33/56 ,  H01L33/62 ,  H01L2224/45144 ,  H01L2224/48091 ,  H01L2224/48137 ,  H01L2224/48465 ,  H01L2224/8592 ,  H01L2924/01322 ,  H01L2924/181 ,  H01L2933/005 ,  H01L2933/0058 ,  H01L2933/0066 ,  H01L2924/00014 ,  H01L2924/00 ,  H01L2924/00012

Abstract: A method of manufacturing a light emitting device includes providing a substrate and establishing metallization on an upper surface of the substrate. A light emitting element is mounted on top of the metallization, and the metallization and light emitting element are electrically connected. Light reflective resin is provided at a position surrounding the light emitting element to reflect light from the light emitting element. The surfaces of metallization, a surface of the light emitting element, a conducting wire, and a top surface of the light reflective resin are covered continuously, with insulating material. An inside surrounded by the light reflective resin is filled with encapsulating material to encapsulate the light emitting element and the insulating material around the light emitting element.

公开(公告)号：US20190248083A1

公开(公告)日：2019-08-15

申请号：US16393926

申请日：2019-04-24

Applicant: NICHIA CORPORATION

Inventor： Motokazu YAMADA ,  Masakazu KOTANI ,  Tetsuji SEINO ,  Shinsaku IKUTA

IPC: B29D11/00 ,  H01L33/00 ,  H01L33/54

Abstract: A method of manufacturing a light emitting device includes providing a substrate on which a light source is disposed. An underfill material is ejected from a nozzle onto the substrate substantially around the light source in a circular shape, a shape of a letter ‘C’, or a rectangular shape. A covering member having a recess portion is provided above the light source.

公开(公告)号：US20190198484A1

公开(公告)日：2019-06-27

申请号：US16230591

申请日：2018-12-21

Applicant: NICHIA CORPORATION

Inventor： Motokazu YAMADA

IPC: H01L25/075 ,  H01L33/62 ,  H01L33/46

CPC classification number: H01L25/0753 ,  H01L33/46 ,  H01L33/62

Abstract: A light emitting device includes a wiring substrate, light emitting elements, light-reflecting films, and a light diffusing member. The light emitting elements are mounted in a matrix on the wiring substrate. Each of the light emitting elements includes a sapphire substrate having a lower surface, first lateral surfaces inclined to the lower surface, and second lateral surfaces perpendicular to the lower surface, and a semiconductor layered structure disposed on the lower surface. The light-reflecting films are respectively disposed on the light emitting elements. The light diffusing member is disposed above the light emitting elements. At least a group of the light emitting elements is arranged such that, in every adjacent ones of the light emitting elements in at least one of a row direction and a column direction, the first lateral surface of the light emitting element faces the second lateral surface of the adjacent light emitting element.