公开(公告)号：US20240405506A1

公开(公告)日：2024-12-05

申请号：US18673150

申请日：2024-05-23

Applicant: NICHIA CORPORATION

Inventor： Daisuke KASAI

IPC: H01S5/02315 ,  H01S5/024 ,  H01S5/042

Abstract: A light-emitting module includes a mounting substrate and a light-emitting device. The mounting substrate includes first and second mounting portions and an insulating portion. The first mounting portion has a first upper surface. The second mounting portion has a second upper surface at a position higher than a position of the first upper surface. The insulating portion covers only a part of a region of the first upper surface, only a part of a region of the second upper surface, and a region between the first upper surface and the second upper surface. The light-emitting device has a lower surface mounted on the mounting substrate so as to overlap with at least a part of the first mounting portion, at least a part of the second mounting portion, and at least a part of the insulating portion in a top view.

公开(公告)号：US20230194766A1

公开(公告)日：2023-06-22

申请号：US18166356

申请日：2023-02-08

Applicant: NICHIA CORPORATION

Inventor： Takuya NAKABAYASHI ,  Daisuke KASAI ,  Takao NAKAUCHI

IPC: F21V8/00

CPC classification number: G02B6/0038 ,  G02B6/0055 ,  G02B6/0068

Abstract: A light-emitting module includes: a plurality of light sources; and a lightguide plate including a plurality of light source placement sections, in each of which at least one light source is arranged, arrayed in a first direction and a second direction orthogonal to the first direction. The lightguide plate defines at least one first-A light control groove and at least one first-B light control groove that extend parallel to the second direction between a first light source placement section and a second light source placement section adjacent to the first light source placement section in the first direction, and at least one second-A light control groove and at least one second-B light control groove that extend parallel to the first direction between the first light source placement section and a third light source placement section adjacent to the first light source placement section in the second direction.

公开(公告)号：US20230003933A1

公开(公告)日：2023-01-05

申请号：US17943519

申请日：2022-09-13

Applicant: Nichia Corporation

Inventor： Daisuke KASAI

IPC: F21V8/00 ,  F21V23/00 ,  F21V33/00 ,  F21Y105/16 ,  G02F1/1335

Abstract: A method of manufacturing a planar light source includes: providing a wiring substrate; locating a light guide plate on a first principal face of the wiring substrate, wherein the light guide plate includes a plurality of unit regions arranged in one dimension or two dimensions, and a plurality of through holes that are open at the a principal face and a second principal face of the light guide plate, wherein at least one of the through holes is located in the unit regions; locating light sources in the through holes in the unit regions on the first principal face of the wiring substrate; locating a first light transmissive member in a first of the through holes; and locating a second light transmissive member in the first through hole.

公开(公告)号：US20200209462A1

公开(公告)日：2020-07-02

申请号：US16729356

申请日：2019-12-28

Applicant: NICHIA CORPORATION

Inventor： Daisuke KASAI

IPC: F21V8/00

Abstract: A light emitting module includes: a light emitting element unit including: a light-emitting element that has a main-light-emission surface, an electrode-formation surface and a side-surface, a light-transmissive member that covers the main-light-emission surface, and a first light-reflection member that covers the side-surface; a light-transmissive light guide plate including a first main-surface as a light emission surface, and a second main-surface opposed to the first main-surface and has a recess accommodating the light emitting element unit so that the first light-reflection member is partially arranged out of the recess in a cross-section; a light-transmissive interposition member that contacts an interior side-surface of the recess and an exterior side-surface of the light emitting element unit; and a second light-reflection member that partially covers the second main-surface and the interposition member. The interposition member is at least partially exposed from the second light-reflection member in a plan view. The hardness of the interposition member is lower than a hardness of the first light-reflection member and a hardness of the second light-reflection member.