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：US20190369316A1

公开(公告)日：2019-12-05

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：US20160091655A1

公开(公告)日：2016-03-31

申请号：US14869171

申请日：2015-09-29

Applicant: NICHIA CORPORATION

Inventor： Yusaku ACHI ,  Daisuke IWAKURA

IPC: F21V8/00

CPC classification number: G02B6/0068 ,  G02B6/0023

Abstract: A backlight device includes a light guide plate having an incident surface, a first side surface, and a second side surface. The first side surface extends from a first end of the incident surface and the second side surface extends from a second end of the incident surface. A green illuminant faces the incident surface and emits a green light toward the incident surface. A red illuminant faces the incident surface and emits a red light toward the incident surface. A white illuminant disposed on a side of at least one end of the first and second ends of the incident surface emits a white light toward the light guide plate. At least one of the emitted green light and the emitted red light includes a blue component having an emission peak wavelength in a range of 420 to 500 nm.

Abstract translation: 背光源装置包括具有入射面的导光板，第一侧面和第二侧面。 第一侧表面从入射表面的第一端延伸，第二侧表面从入射表面的第二端延伸。 绿色光源面对入射面，向入射面发出绿色光。 红色光源面向入射面，向入射面发出红色光。 设置在入射表面的第一和第二端的至少一端的一侧的白色发光体朝向导光板发射白色光。 所发射的绿光和发射的红光中的至少一个包括具有420-500nm范围内的发射峰值波长的蓝色分量。

公开(公告)号：US20210202792A1

公开(公告)日：2021-07-01

申请号：US17129308

申请日：2020-12-21

Applicant: NICHIA CORPORATION

Inventor： Yusaku ACHI

IPC: H01L33/00

Abstract: A method for manufacturing a linear light source includes: providing a base having a first surface defining recesses in an array in a first direction, and a second surface having a curved contour in a cross section orthogonal to the first direction and a straight contour in a cross section parallel to the first direction; providing light sources each having a top surface and a bottom surface including electrodes; placing the light sources at positions overlapping the recesses in a plan view with the top surface of the light source facing a bottom surface of the recess; placing a first reflective member to cover the light sources and the first surface so that the electrodes of the light sources are exposed; placing a second reflective member on the second surface; and cutting the base along the first direction to define a third surface continuous with the first and second surfaces.

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：US20200176650A1

公开(公告)日：2020-06-04

申请号：US16698323

申请日：2019-11-27

Applicant: NICHIA CORPORATION

Inventor： Yusaku ACHI ,  Ryohei YAMASHITA

IPC: H01L33/58 ,  G02F1/1335 ,  H01L33/50 ,  F21V8/00

Abstract: A light emitting module includes a light guiding plate being light-transmissive and having a first main surface being as a light exiting surface and a second main surface positioned opposite to the first main surface; a light emitting element disposed at the second main surface and configured to emit light toward the light guiding plate; an optical function part being greater in size than a light emitting surface of the light emitting element, the optical function part being disposed in the first main surface so as to correspond to an optical axis of the light emitting element; and a light-cutting scattering layer disposed on a first main surface side of the light guiding plate so as to correspond to the optical axis of the light emitting element. The light-cutting scattering layer covers the optical function part as seen in a plan view.

公开(公告)号：US20180259703A1

公开(公告)日：2018-09-13

申请号：US15974630

申请日：2018-05-08

Applicant: NICHIA CORPORATION

Inventor： Hiroto ITOI ,  Ryosuke WAKAKI ,  Ken KATSURAGI ,  Yusaku ACHI ,  Shingo MASUI

IPC: F21V8/00

CPC classification number: G02B6/0073 ,  G02B6/0023 ,  G02B6/0068

Abstract: A backlight unit has a light-guide plate and a light source optically coupled with the light-guide plate, with which light is input from a plane of the light-guide plate and white-light is output from the first principal plane of the light-guide plate. The light source has a plurality of blue light emitting diodes, red phosphor material excited by light from the blue light emitting diodes and emits red light, and a plurality of green semiconductor lasers having emission peaks at green light wavelengths. The red phosphor material is included in a phosphor sheet, and the phosphor sheet is disposed on a surface of the light-guide plate.