公开(公告)号：US20210320087A1

公开(公告)日：2021-10-14

申请号：US16944117

申请日：2020-07-30

Applicant: NICHIA CORPORATION

Inventor： Mamoru IMADA

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

Abstract: A surface-emitting light source includes a plurality of light-emitting regions each of which includes light sources, wherein each of the plurality of light-emitting regions can be turned on individually. Each of the light-emitting regions is adjacent to each other and includes a light-guide portion that is provided in adjacent light-emitting regions and covers the light sources, and a light-reflective member disposed below the light-guide portion. The light-reflective member has a first wall portion disposed at the outer periphery of each of the light-emitting regions. The first wall portion includes one or more unit first wall portions each of which corresponds to a respective one of the light sources located at the outer periphery of each of the light-emitting regions. The unit first wall portion located at the two adjacent light-emitting regions has a central portion having a height smaller than a height of both end portions.

公开(公告)号：US20210193881A1

公开(公告)日：2021-06-24

申请号：US17195417

申请日：2021-03-08

Applicant: NICHIA CORPORATION

Inventor： Mamoru IMADA ,  Toshiaki MORIWAKI ,  Yusaku ACHI ,  Ryohei YAMASHITA

IPC: H01L33/50 ,  H01L33/10 ,  H01L33/54 ,  H01L33/36

Abstract: A light emitting module includes: a plurality of light emitting elements each having a primary light emitting surface and a lateral surface; a plurality of wavelength conversion members arranged respectively on the primary light emitting surfaces of the plurality of light emitting elements; and a lightguide plate having a first primary surface and a second primary surface and arranged continuously on the plurality of wavelength conversion members so that the second primary surface faces the plurality of wavelength conversion members, wherein the lightguide plate includes a plurality of recessed portions located on the second primary surface, and a lateral surface of at least one of the plurality of wavelength conversion members is partially in contact with an inner lateral surface of at least one of the plurality of recessed portions.

公开(公告)号：US20220004055A1

公开(公告)日：2022-01-06

申请号：US17447927

申请日：2021-09-16

Applicant: NICHIA CORPORATION

Inventor： Mamoru IMADA

IPC: G02F1/1335 ,  G02F1/13357

Abstract: A light emitting device includes: a lightguide plate including a first surface on which a plurality of first recesses are provided; a light-reflective resin layer located on a bottom portion of each first recess; a plurality of light emitting elements each having an upper surface and a lateral surface, wherein each one of the plurality of light emitting elements is arranged in a corresponding one of the plurality of first recesses; and a plurality of wavelength conversion members, wherein: the upper surface of each light emitting element is attached to the light-reflective resin layer; and each of the plurality of wavelength conversion members covers the lateral surface of the light emitting element in the first recess.

公开(公告)号：US20200041836A1

公开(公告)日：2020-02-06

申请号：US16528955

申请日：2019-08-01

Applicant: NICHIA CORPORATION

Inventor： Mamoru IMADA ,  Toshiaki MORIWAKI ,  Yusaku ACHI ,  Ryohei YAMASHITA

IPC: G02F1/1335 ,  H01L33/50

Abstract: A light emitting module includes: a plurality of light emitting elements each having a primary light emitting surface; a plurality of wavelength conversion members arranged respectively on the primary light emitting surfaces of the plurality of light emitting elements; a resin member arranged between the plurality of wavelength conversion members and covering lateral surfaces of the plurality of wavelength conversion members; and a lightguide plate having a first primary surface and a second primary surface, and arranged on the resin member and the plurality of wavelength conversion members so that the second primary surface faces the resin member and the plurality of wavelength conversion members, wherein the lightguide plate includes a plurality of recessed portions on the second primary surface that are located over the plurality of wavelength conversion members.

公开(公告)号：US20210270445A1

公开(公告)日：2021-09-02

申请号：US17189198

申请日：2021-03-01

Applicant: NICHIA CORPORATION

Inventor： Mamoru IMADA

IPC: F21V9/30 ,  F21V8/00

Abstract: A light-emitting module includes a two-dimensional array of a plurality of light-emitting units. Each of the light-emitting units includes a lightguide plate, a light source, and a light diffusing layer. The light guide plate has a first surface and a first hole portion. The first hole portion has at least one lateral surface and an opening at the first surface. The light source is provided at least partially inside the first hole portion. The light source includes a light-emitting element. The light diffusing layer covers part of the at least one lateral surface of the first hole portion.

公开(公告)号：US20210255508A1

公开(公告)日：2021-08-19

申请号：US17302459

申请日：2021-05-03

Applicant: NICHIA CORPORATION

Inventor： Mamoru IMADA

IPC: G02F1/13357 ,  H01L33/50

Abstract: A light emitting module comprising a light guide plate and a light source. The light guide plate has a polygonal shape with a plurality of corners in a plan view. The light guide plate has a first primary face which serves as an emission face, a second primary face opposing the first primary face, and a recessed portion in the second primary face. The light source is disposed in the recessed portion. The recessed portion has an opening on the second primary face, and a bottom face having a polygonal shape in a plan view. The light source has lateral faces along sides of the bottom face of the recessed portion. In a plan view, diagonal lines connecting opposing corners of the first primary face intersect with the sides of the bottom face of the recessed portion.

公开(公告)号：US20190049649A1

公开(公告)日：2019-02-14

申请号：US16024018

申请日：2018-06-29

Applicant: NICHIA CORPORATION

Inventor： Tadao HAYASHI ,  Ryohei YAMASHITA ,  Yusaku ACHI ,  Mamoru IMADA

IPC: F21V8/00 ,  H01L33/50

Abstract: A method of manufacturing a light emitting module according to the present disclosure includes: preparing a light guide plate that comprises a first main surface serving as a light-emitting surface and a second main surface opposite to the first main surface; respectively providing light emitting elements on the second main surface so as to correspond to each of a plurality of optically functional portions provided on the first main surface of the light guide plate; and forming wires electrically connecting the plurality of light emitting elements.

公开(公告)号：US20210119093A1

公开(公告)日：2021-04-22

申请号：US17137778

申请日：2020-12-30

Applicant: NICHIA CORPORATION

Inventor： Mamoru IMADA

IPC: H01L33/60 ,  F21V23/00 ,  F21V8/00 ,  H01L33/38

Abstract: According to one embodiment, the light guide plate has a first major surface, a second major surface, a side surface, and a recess. The recess is provided in the second major surface. The fluorescent layer is provided in the recess. The light-emitting element is bonded to the fluorescent layer and includes an electrode on a surface of the light-emitting element on a side opposite to a surface of the light-emitting element bonded to the fluorescent layer. The module side surface includes at least a portion of the side surface of the light guide plate. The first interconnect is provided along the second major surface and connected to the electrode of the light-emitting element. The second interconnect is provided on the module side surface and connected to the first interconnect.

公开(公告)号：US20200064687A1

公开(公告)日：2020-02-27

申请号：US16545355

申请日：2019-08-20

Applicant: NICHIA CORPORATION

Inventor： Mamoru IMADA

IPC: G02F1/1335

Abstract: A light emitting device includes: a lightguide plate including a first surface on which a plurality of first recesses are provided; a light-reflective resin layer located on a bottom portion of each first recess; a plurality of light emitting elements each having an upper surface and a lateral surface, wherein each one of the plurality of light emitting elements is arranged in a corresponding one of the plurality of first recesses; and a plurality of wavelength conversion members, wherein: the upper surface of each light emitting element is attached to the light-reflective resin layer; and each of the plurality of wavelength conversion members covers the lateral surface of the light emitting element in the first recess.

公开(公告)号：US20190294005A1

公开(公告)日：2019-09-26

申请号：US16365037

申请日：2019-03-26

Applicant: NICHIA CORPORATION

Inventor： Mamoru IMADA ,  Toshiaki MORIWAKI ,  Yusaku ACHI

IPC: G02F1/1335 ,  F21V8/00 ,  H01L33/52

Abstract: A light emitting module includes a light transmissive light guiding plate, a light adjustment portion, and a light emitting element. The light guiding plate has a first main surface serving as a light emitting surface which emits light outside, and a second main surface opposite to the first main surface. The second main surface is provided with a recess. The light adjustment portion is disposed in the recess of the light guiding plate. The light emitting element is bonded to the light adjustment portion. The light adjustment portion includes a wavelength conversion portion and a light diffusion portion. The light diffusion portion has a wavelength conversion portion side on which the wavelength conversion portion is bonded. The light diffusion portion is disposed on a bottom of the recess. The wavelength conversion portion is bonded to the light emitting element.