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：US20200209461A1

公开(公告)日：2020-07-02

申请号：US16726300

申请日：2019-12-24

Applicant: NICHIA CORPORATION

Inventor： Yusaku ACHI ,  Toshiaki MORIWAKI ,  Ryohei YAMASHITA

IPC: F21V8/00

Abstract: A light-emitting module includes: a light guide plate having a first surface on which a plurality of first recesses arranged in rows and columns and a grid-shaped groove portion surrounding each of the plurality of first recesses are provided, and a second surface located on the opposite side from the first surface; a plurality of light-emitting elements each disposed inside a corresponding one of the plurality of first recesses; a first light transmission member disposed inside the groove portion of the light guide plate, and having a refractive index lower than a refractive index of the light guide plate; and a reflective resin layer covering the first surface of the light guide plate and the first light transmission member.

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.

公开(公告)号：US20200371398A1

公开(公告)日：2020-11-26

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

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：US20200044121A1

公开(公告)日：2020-02-06

申请号：US16529005

申请日：2019-08-01

Applicant: NICHIA CORPORATION

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

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

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：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：US20190157528A1

公开(公告)日：2019-05-23

申请号：US16250725

申请日：2019-01-17

Applicant: NICHIA CORPORATION

Inventor： Takahiro TANI ,  Hiroki YUU ,  Toshiaki MORIWAKI

IPC: H01L33/58 ,  H01L33/48 ,  H01L33/62

Abstract: A light emitting device includes a light emitting surface, a back surface arranged on an opposite side of the light emitting surface, a mounting surface arranged between the light emitting surface and the back surface, and includes a light emitting element, a light shielding member, first and second terminal coating films, and first and second electrically conductive members. The light emitting element has first and second electrodes arranged on the second main surface. The light shielding member covers the lateral surface of the light emitting element and does not cover the first main surface of the light emitting element. The first and second terminal coating films are electrically connected to the first and second electrodes respectively, and arranged continuously on the back surface and the mounting surface of the light emitting device. The first and second electrically conductive members are in contact with the first and second electrodes respectively.

公开(公告)号：US20180175263A1

公开(公告)日：2018-06-21

申请号：US15883348

申请日：2018-01-30

Applicant: NICHIA CORPORATION

Inventor： Takahiro TANI ,  Hiroki YUU ,  Toshiaki MORIWAKI

IPC: H01L33/58 ,  H01L33/62

CPC classification number: H01L33/58 ,  H01L33/486 ,  H01L33/56 ,  H01L33/62 ,  H01L2933/0033 ,  H01L2933/005 ,  H01L2933/0058 ,  H01L2933/0066 ,  H01S5/005 ,  H01S5/0425

Abstract: A method of manufacturing a light emitting device includes: arranging first and second light emitting elements, each having a pair of electrodes disposed on a surface opposite to a main light emitting surface, on a base body adjacent to each other with the electrodes facing upward; forming a light shielding member at least covering the electrodes of each of the first and second light emitting elements and a portion between the first and second light emitting elements; forming recesses by removing portions of the light shielding member so that at least a portion of each of the electrodes of the first and second light emitting elements are exposed from the light shielding member; and forming electrically conductive members in the recesses so that each of the electrically conductive members is in contact with a corresponding one of the electrodes of the first and second light emitting elements.

公开(公告)号：US20200343424A1

公开(公告)日：2020-10-29

申请号：US16854656

申请日：2020-04-21

Applicant: NICHIA CORPORATION

Inventor： Masaaki KATSUMATA ,  Koji TAGUCHI ,  Toshiaki MORIWAKI

IPC: H01L33/62 ,  H01L33/00 ,  H01L23/00

Abstract: A light emitting device includes a base, a first external terminal, a second external terminal, a plurality of wirings respectively electrically connecting the first external terminal and the second external terminal, and a plurality of light emitting elements each electrically connected to a corresponding one of the wirings. The wirings include a first wiring connecting the first external terminal and the second external terminal at a smallest distance, a second wiring longer than the first wiring, and a third wiring longer than the second wiring. The first, second, and third wirings have a substantially equal electric resistance. At least two of the first, second and third wirings are each provided with at least two of the light emitting elements with an average width in an intermediate region between adjacent ones of the light emitting elements being smaller than an average width in a region other than the intermediate region.

公开(公告)号：US20200284968A1

公开(公告)日：2020-09-10

申请号：US16810420

申请日：2020-03-05

Applicant: NICHIA CORPORATION

Inventor： Ryohei YAMASHITA ,  Toshinobu KATSUMATA ,  Seitaro AKAGAWA ,  Toshiaki MORIWAKI

IPC: F21V8/00

Abstract: A light emitting module includes: a lightguide plate having an upper surface and a lower surface opposite to the upper surface, the upper surface including a first hole; a light emitting element on a lower surface side of the lightguide plate, the light emitting element facing the first hole; and a reflective resin layer, wherein the first hole includes a first portion and a second portion, the first portion includes a first lateral surface sloping with respect to the upper surface, the second portion has a second lateral surface sloping with respect to the upper surface, the second lateral surface being present between an opening in the upper surface and the first lateral surface of the first portion, and the reflective resin layer is located in the first portion of the first hole.