公开(公告)号：US11056615B2

公开(公告)日：2021-07-06

申请号：US16585810

申请日：2019-09-27

Applicant: NICHIA CORPORATION

Inventor： Daisuke Kasai ,  Akira Miki ,  Toru Hashimoto ,  Shinichi Daikoku

IPC: H01L33/24 ,  G02F1/13357 ,  H01L33/50 ,  H01L33/62

Abstract: In order to obtain a light emitting module with a less unevenness of luminance, provided is a method for manufacturing a light emitting module comprising: preparing a light emitter and a light-transmissive light guide plate, the light emitter comprising a light emitting element, the light guide plate having a first main surface serving as a light emitting surface from which light is emitted outside and a second main surface located opposite to the first main surface and having a concave portion, the concave portion comprising a side surface and a bottom surface that is smaller than an opening of the concave portion in a cross-sectional view; fixing the light emitter to the bottom surface of the concave portion via a bonding member; and forming a wiring at an electrode of the light emitting element.

公开(公告)号：US10431724B2

公开(公告)日：2019-10-01

申请号：US15977580

申请日：2018-05-11

Applicant: NICHIA CORPORATION

Inventor： Tadaaki Ikeda ,  Toru Hashimoto

IPC: H01L33/60 ,  H01L33/50 ,  H01L33/48 ,  H01L33/56 ,  H01L33/54 ,  F21V7/22 ,  H01L33/58

Abstract: A light emitting device includes: a rectangular substrate, a light emitting element, a reflective member disposed at one or more lateral sides of the light emitting element while being away from therefrom, a light guide member, and a light transmissive member on the light guide member. The reflective member includes one or more first reflective members opposing lateral faces of the light emitting element, and a second reflective member outside the first reflective member. The first reflective members have inner lateral faces opposing each other each having an oblique or curved portion slanted so that a distance therebetween increases towards the light transmissive member from a side close to the substrate. The second reflective member covers outer lateral faces of the light transmissive member and the first reflective members, and an upper face of the second reflective member is flush with an upper face of the light transmissive member.

公开(公告)号：US10283670B2

公开(公告)日：2019-05-07

申请号：US15252219

申请日：2016-08-31

Applicant: NICHIA CORPORATION

Inventor： Toru Hashimoto ,  Yukihiro Shibano

IPC: H01L33/50 ,  H01L33/00 ,  H01L33/58 ,  H01L33/60 ,  H01L33/54

Abstract: A soluble member is provided on a light emitting surface of a light emitting element. The soluble member is soluble in a solvent. The soluble member has a first surface facing the light emitting surface, a second surface opposite to the first surface in the light emitting direction, and a soluble member outer peripheral side surface provided between the first surface and the second surface. A light-blocking member made of a material which is not soluble in the solvent is provided to cover a light emitting element outer peripheral side surface and the soluble member outer peripheral side surface so that an inner side wall of the light-blocking member contacts the soluble member outer peripheral side surface. The soluble member is removed using the solvent to provide a recess surrounded by the inner side wall of the light-blocking member. A first light-transmissive member is provided in the recess.

公开(公告)号：US10186641B2

公开(公告)日：2019-01-22

申请号：US15697452

申请日：2017-09-07

Applicant: NICHIA CORPORATION

Inventor： Toru Hashimoto ,  Yukihiro Shibano

IPC: H01L33/48 ,  H01L33/56 ,  H01L33/50 ,  H01L33/62 ,  H01L33/54

Abstract: A light emitting device includes a light emitting element, a frame, a first light-transmissive member, and a second light-transmissive member. The light emitting element includes an element upper surface from which a light is configured to be emitted, an element bottom surface opposite to the element upper surface, and an element lateral surface connecting the element upper surface and the element bottom surface. The frame is provided to surround the light emitting element to be opposite to the element lateral surface. The first light-transmissive member is provided on the element upper surface and the element lateral surface to contact the frame. The first light-transmissive member covers the element upper surface and the element lateral surface. The second light-transmissive member is provided on the first light-transmissive member.

公开(公告)号：US09786821B2

公开(公告)日：2017-10-10

申请号：US15209761

申请日：2016-07-14

Applicant: NICHIA CORPORATION

Inventor： Toru Hashimoto ,  Yukihiro Shibano

IPC: H01L33/48 ,  H01L33/56 ,  H01L33/50 ,  H01L33/62

CPC classification number: H01L33/486 ,  H01L33/502 ,  H01L33/54 ,  H01L33/56 ,  H01L33/62 ,  H01L2933/0033 ,  H01L2933/0041 ,  H01L2933/005 ,  H01L2933/0066

Abstract: A method for manufacturing a light emitting device includes: mounting a light emitting element on the support body upper surface such that a light emitting element lower surface of light emitting element is opposite to the support body upper surface in a height direction, a frame and the light emitting element being mounted such that the light emitting element is located in an opening of the frame; injecting a resin into an inner space provided between the frame and the light emitting element through an inlet to form a covering member which covers the light emitting element such that at least a part of a light emitting element upper surface is exposed, the inlet connecting the inner space and an outer space opposite to the inner space with respect to the frame wall; and providing a light-transmissive member on the light emitting element.

公开(公告)号：US11841135B2

公开(公告)日：2023-12-12

申请号：US17671897

申请日：2022-02-15

Applicant: NICHIA CORPORATION

Inventor： Takuya Nakabayashi ,  Toru Hashimoto ,  Keiji Emura

IPC: F21V5/04 ,  F21V13/14 ,  F21Y105/16 ,  F21V8/00 ,  G02F1/1335 ,  F21V5/00 ,  G02F1/13357

CPC classification number: F21V5/045 ,  F21V5/007 ,  F21V13/14 ,  F21Y2105/16 ,  G02B6/0038 ,  G02F1/133606 ,  G02F1/133607

Abstract: A light emitting module includes: a light guide member including: an emission region defined by a sectioning groove, a light source placement part located in the emission region, and a light adjusting hole that, in a schematic top view, is located between the sectioning groove and the light source placement part; and a light source disposed in the light source placement part. A refractive index of an inside of the light adjusting hole is lower than a refractive index of the light guide member. In the schematic top view, the light adjusting hole is positioned to intersect with a first straight line connecting a center of the light source and a farthest point in the sectioning groove, the farthest point being farthest from the center of the light source.

公开(公告)号：US11789194B2

公开(公告)日：2023-10-17

申请号：US17488050

申请日：2021-09-28

Applicant: NICHIA CORPORATION

Inventor： Toru Hashimoto

IPC: F21V8/00

CPC classification number: G02B6/0055 ,  G02B6/0051 ,  G02B6/0068 ,  G02B6/0083

Abstract: A light emitting module includes: a light source part including a first light source and a second light source; a light guide member including: a first light guide part having a 1st A principal face, a 1st B principal face located opposite to the 1st A principal face, a first lateral face positioned between the 1st A principal face and the 1st B principal face, and a first hole in which the first light source is disposed; and a second light guide part having a 2nd A principal face, a 2nd B principal face located opposite to the 2nd A principal face, a second lateral face positioned between the 2nd A principal face and the 2nd B principal face, the second lateral face facing the first lateral face, and a second hole in which the second light source is disposed.

公开(公告)号：US11777063B2

公开(公告)日：2023-10-03

申请号：US17163014

申请日：2021-01-29

Applicant: NICHIA CORPORATION

Inventor： Toru Hashimoto

IPC: H01L33/50 ,  H01L33/00 ,  H01L33/54 ,  H01L33/60 ,  H01L33/58 ,  H01L25/075

CPC classification number: H01L33/502 ,  H01L33/0095 ,  H01L33/54 ,  H01L33/60 ,  H01L2933/005 ,  H01L2933/0058 ,  H01L2933/0091

Abstract: A method for manufacturing a planar light source includes: preparing a structure body including a wiring substrate, a light guide plate including a first major surface, a second major surface, and an inner side surface defining a first hole with an opening on a first major surface side, and a light source arranged on the wiring substrate in the first hole; injecting a first resin material downward through the opening of the first hole, the first resin material including a light-diffusing agent; and curing the first resin material to form a first resin layer on a wiring substrate between the inner side surface of the first hole and a first side surface of a first light-transmitting member.

公开(公告)号：US11740401B2

公开(公告)日：2023-08-29

申请号：US17446505

申请日：2021-08-31

Applicant: NICHIA CORPORATION

Inventor： Keiji Emura ,  Takuya Nakabayashi ,  Toru Hashimoto

IPC: F21V8/00

CPC classification number: G02B6/0065 ,  G02B6/0055 ,  G02B6/0068 ,  G02B6/0083

Abstract: A method of manufacturing a light emitting module includes: providing an intermediate that includes a light guide having a first principal face and a second principal face opposing the first principal face, a plurality of light sources disposed on the second principal face of the light guide, and a wiring layer disposed on the second principal face and electrically connected to the plurality of light sources; allowing the plurality of light sources to emit light and measuring optical characteristics of the emitted light; and forming an optical characteristic correcting element in the intermediate based on the measured optical characteristics.

公开(公告)号：US11715819B2

公开(公告)日：2023-08-01

申请号：US17702227

申请日：2022-03-23

Applicant: NICHIA CORPORATION

Inventor： Toru Hashimoto

IPC: H01L33/50 ,  H01L33/58 ,  H01L33/60

CPC classification number: H01L33/505 ,  H01L33/58 ,  H01L33/60 ,  H01L2933/0041 ,  H01L2933/0058

Abstract: A light emitting device includes a light emitting element, a light guide member, a reflecting member, a wavelength conversion member. The light emitting element has a light emitting surface and lateral surfaces. The light guiding member is provided on at least a portion of the lateral surfaces of the light emitting element. The reflecting member is provided on the lateral surface of the light emitting element with the light guiding member interposed therebetween. The wavelength conversion member is provided on the light emitting surface of the light emitting element, the light guiding member and the reflecting member. The wavelength conversion member is provided with a recess between an outer lateral surface of the wavelength conversion member and the light guiding member. The reflecting member is provided in the recess.