公开(公告)号：US11036083B2

公开(公告)日：2021-06-15

申请号：US16911922

申请日：2020-06-25

Applicant: NICHIA CORPORATION

Inventor： Mamoru Imada

IPC: G02F1/13357 ,  H01L33/50 ,  G02F1/1335

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：US10739507B2

公开(公告)日：2020-08-11

申请号：US16428387

申请日：2019-05-31

Applicant: NICHIA CORPORATION

Inventor： Mamoru Imada ,  Yusaku Achi

IPC: F21V8/00

Abstract: A light emitting module and a planar light source reduced in thickness are provided. A light emitting module includes: a light guide plate including a first main surface serving as a light emitting surface, a second main surface provided on a side opposite to the first main surface, and a recess provided at the second main surface; a first fluorescent material layer provided in the recess; a light emitting element provided at the first fluorescent material layer on the second main surface side; and a second fluorescent material layer provided at the second main surface.

公开(公告)号：US11899306B2

公开(公告)日：2024-02-13

申请号：US17447927

申请日：2021-09-16

Applicant: NICHIA CORPORATION

Inventor： Mamoru Imada

IPC: G02F1/1335 ,  G02F1/13357

CPC classification number: G02F1/133553 ,  G02F1/133504 ,  G02F1/133514 ,  G02F1/133524 ,  G02F1/133602

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：US11092731B2

公开(公告)日：2021-08-17

申请号：US16940536

申请日：2020-07-28

Applicant: NICHIA CORPORATION

Inventor： Mamoru Imada ,  Yusaku Achi

IPC: F21V8/00

Abstract: A light emitting module and a planar light source reduced in thickness are provided. A light emitting module includes: a light guide plate including a first main surface serving as a light emitting surface, a second main surface provided on a side opposite to the first main surface, and a recess provided at the second main surface; a first fluorescent material layer provided in the recess; a light emitting element provided at the first fluorescent material layer on the second main surface side; and a second fluorescent material layer provided at the second main surface.

公开(公告)号：US11508881B2

公开(公告)日：2022-11-22

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 ,  H01L33/06 ,  H01L33/36 ,  G02F1/13357 ,  H01L33/62 ,  F21V8/00

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：US11150508B2

公开(公告)日：2021-10-19

申请号：US16545355

申请日：2019-08-20

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：US11106077B2

公开(公告)日：2021-08-31

申请号：US16528955

申请日：2019-08-01

Applicant: NICHIA CORPORATION

Inventor： Mamoru Imada ,  Toshiaki Moriwaki ,  Yusaku Achi ,  Ryohei Yamashita

IPC: H01L33/48 ,  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：US11367816B2

公开(公告)日：2022-06-21

申请号：US16944117

申请日：2020-07-30

Applicant: NICHIA CORPORATION

Inventor： Mamoru Imada

IPC: H01L33/58 ,  H01L25/075 ,  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：US11221519B2

公开(公告)日：2022-01-11

申请号：US16989797

申请日：2020-08-10

Applicant: NICHIA CORPORATION

Inventor： Mamoru Imada ,  Toshiaki Moriwaki ,  Yusaku Achi

IPC: G02F1/13357 ,  F21V8/00 ,  H01L33/52 ,  H01L25/075 ,  G02B6/00 ,  H01L33/50 ,  H01L33/58 ,  G02F1/1335

Abstract: Provided is a method of manufacturing a light emitting module, the method including: providing a light guiding plate having a first main surface serving as a lighting surface, and a second main surface opposite to the first main surface, the second main surface defining a recess thereon, preparing a light emitting element unit by attaching a wavelength conversion portion to a light emitting element having electrodes and a light emitting surface; providing a light diffusion portion at a bottom of the recess; depositing the light emitting element unit onto the light diffusion portion in the recess; and forming a terminal having an electrical conductivity on the electrodes of the light emitting element.

公开(公告)号：US11143807B2

公开(公告)日：2021-10-12

申请号：US16942742

申请日：2020-07-29

Applicant: NICHIA CORPORATION

Inventor： Tadao Hayashi ,  Ryohei Yamashita ,  Yusaku Achi ,  Mamoru Imada

IPC: G02B6/00 ,  F21V8/00 ,  H01L33/50 ,  H01L25/075 ,  G02F1/13357 ,  H01L33/58 ,  G02F1/1335

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.