公开(公告)号：US20230027533A1

公开(公告)日：2023-01-26

申请号：US17938017

申请日：2022-10-04

Applicant: NICHIA CORPORATION

Inventor： Takuya NAKABAYASHI ,  Tadaaki IKEDA ,  Tetsuya ISHIKAWA

IPC: H01L25/13 ,  H01L33/52 ,  H01L33/62

Abstract: A light emitting device includes a substrate including first, second, third and fourth wiring portions on a top surface of a base member and arrayed in a first direction, and a connection wiring portion connecting the second and third wiring portions. The connection wiring portion includes first and second connection ends respectively connected with the second and third wiring portions, and a connection central portion connecting the first and second connection ends and having a maximum width in a second direction different from each of a maximum width of the first connection end and a maximum width of the second connection end. In the second direction, at least a part of the connection wiring portion has a width narrower than each of a maximum width of the second wiring portion and a maximum width of the third wiring portion.

公开(公告)号：US20220310896A1

公开(公告)日：2022-09-29

申请号：US17842925

申请日：2022-06-17

Applicant: NICHIA CORPORATION

Inventor： Takuya NAKABAYASHI ,  Toshinobu KATSUMATA ,  Noriaki HIRAIDE

IPC: H01L33/62 ,  H01L33/48 ,  H01L33/50 ,  H05K1/18 ,  H01L33/60 ,  H01L27/15

Abstract: A light-emitting unit includes: a wiring board; a plurality of light-emitting elements provided on the wiring board and electrically coupled with a wire layer of the wiring board; a light reflecting member provided on the wiring board, the light reflecting member covering a lateral surface of each of the plurality of light-emitting elements; a light diffusing layer covering the plurality of light-emitting elements and the light reflecting member; a wavelength conversion layer located on or above the light diffusing layer; and a plurality of light reflecting layers located between the light diffusing layer and the wavelength conversion layer, each of the light reflecting layers being located above a corresponding one of the plurality of light-emitting elements. An upper surface of the light reflecting member has a recess which includes at least one concave surface, and there is a space between the concave surface and the light diffusing layer.

公开(公告)号：US20220146739A1

公开(公告)日：2022-05-12

申请号：US17513875

申请日：2021-10-28

Applicant: NICHIA CORPORATION

Inventor： Takuya NAKABAYASHI ,  Toru HASHIMOTO

IPC: F21V8/00

Abstract: A light-emitting module includes first and second light sources, first and second light guide parts, and a first light-modulating member. The first light guide part includes a first A-major surface, a first B-major surface, a first side surface positioned between the first A-major surface and the first B-major surface, and a first hole portion in which the first light source is disposed. The second light guide part includes a second A-major surface, a second B-major surface, a second side surface positioned between the second A-major surface and the second B-major surface, the second side surface facing the first side surface, and a second hole portion in which the second light source is disposed. The first light-modulating member is positioned at an upper side of the first A-major surface. The first light-modulating member overlaps the first A-major surface and the first side surface when viewed in top-view.

公开(公告)号：US20220066267A1

公开(公告)日：2022-03-03

申请号：US17446388

申请日：2021-08-30

Applicant: NICHIA CORPORATION

Inventor： Takuya NAKABAYASHI ,  Ryohei YAMASHITA ,  Keiji EMURA ,  Tsuyoshi OKAHISA ,  Toshinobu KATSUMATA

IPC: G02F1/13357 ,  G02F1/1335

Abstract: A light-emitting device includes a wiring board, a plurality of light-emitting elements disposed on the wiring board, a light-reflecting member covering a lateral surface of each of the plurality of light-emitting elements, a plurality of light-transmitting layers each located above an emission surface of a corresponding one of the plurality of light-emitting elements, a plurality of light-reflecting layers disposed on the plurality of light-transmitting layers, respectively, a light-diffusing layer disposed above the plurality of light-reflecting layers and the light-reflecting member, and a low-refractive-index layer located between the light-reflecting member and the light-diffusing layer, around each pair of one of the plurality of light-transmitting layers and one of the light-reflecting layers, and having a refractive index lower than that of the plurality of light-transmitting layers. Each of the plurality of light-reflecting layer has a width in a cross-sectional view thereof which is equal to or greater than that of a corresponding one of the plurality of light-transmitting layers.

公开(公告)号：US20210247052A1

公开(公告)日：2021-08-12

申请号：US17169016

申请日：2021-02-05

Applicant: NICHIA CORPORATION

Inventor： Takuya NAKABAYASHI ,  Toru HASHIMOTO ,  Keiji EMURA

IPC: F21V14/06 ,  F21V5/04

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：US20210096292A1

公开(公告)日：2021-04-01

申请号：US17039946

申请日：2020-09-30

Applicant: NICHIA CORPORATION

Inventor： Takuya NAKABAYASHI

IPC: F21V8/00 ,  H01L33/60

Abstract: A light-emitting module includes a light guide plate including a first surface, and a second surface opposite to the first surface; a light-emitting device disposed at a second surface side of the light guide plate; a first light-reflective member provided at a periphery of the light-emitting device at the second surface side; and a second light-reflective member provided outward of the first light-reflective member at the second surface. A diffuse reflectance of the first light-reflective member for light emitted by the light-emitting device is greater than a diffuse reflectance of the second light-reflective member for the light emitted by the light-emitting device.

公开(公告)号：US20210036199A1

公开(公告)日：2021-02-04

申请号：US16945446

申请日：2020-07-31

Applicant: NICHIA CORPORATION

Inventor： Takuya NAKABAYASHI ,  Toshinobu KATSUMATA ,  Noriaki HIRAIDE

IPC: H01L33/62 ,  H01L33/48 ,  H01L27/15 ,  H05K1/18 ,  H01L33/60 ,  H01L33/50

Abstract: A light-emitting unit includes: a wiring board; a plurality of light-emitting elements provided on the wiring board and electrically coupled with a wire layer of the wiring board; a light reflecting member provided on the wiring board, the light reflecting member covering a lateral surface of each of the plurality of light-emitting elements; a light diffusing layer covering the plurality of light-emitting elements and the light reflecting member; a wavelength conversion layer located on or above the light diffusing layer; and a plurality of light reflecting layers located between the light diffusing layer and the wavelength conversion layer, each of the light reflecting layers being located above a corresponding one of the plurality of light-emitting elements. An upper surface of the light reflecting member has a recess which includes at least one concave surface, and there is a space between the concave surface and the light diffusing layer.

公开(公告)号：US20200287095A1

公开(公告)日：2020-09-10

申请号：US16883288

申请日：2020-05-26

Applicant: NICHIA CORPORATION

Inventor： Takuya NAKABAYASHI ,  Tadaaki IKEDA

IPC: H01L33/48 ,  H01L33/62 ,  H01L33/60 ,  H01L33/44

Abstract: A light-emitting device includes a substrate including a base member having an upper surface having a substantially rectangular shape, a lower surface opposite to the upper surface, a first longer lateral surface, a second longer lateral surface opposite to the first longer lateral surface, a first shorter lateral surface, and a second shorter lateral surface opposite to the first shorter lateral surface, first wirings disposed on the upper surface, and second wirings disposed on the lower surface and each electrically connected with a respective one of the first wirings; at least one light-emitting element; and a light-reflective covering member covering lateral surfaces of the light-emitting element and the upper surface of the base member. The base member has at least one first recess open at the upper surface and the first longer lateral surface. Surfaces defining the at least one first recess are covered with the covering member.

公开(公告)号：US20200185584A1

公开(公告)日：2020-06-11

申请号：US16795496

申请日：2020-02-19

Applicant: NICHIA CORPORATION

Inventor： Takuya NAKABAYASHI ,  Gensui TAMURA

IPC: H01L33/64 ,  H01L33/48 ,  H01L33/62 ,  H01L33/60

Abstract: Alight emitting device includes a substrate including a base member including a front surface, a rear surface opposite to the front surface, a bottom surface perpendicular to the front surface, and a top surface opposite to the bottom surface, a first wiring portion located on the front surface, and a second wiring portion located on the rear surface; a light emitting element electrically connected with the first wiring portion; and a first reflective member covering a lateral surface of the light emitting element and the front surface of the base member. The base member has a recessed portion opened on the rear surface and the bottom surface. The substrate includes a third wiring portion covering an inner wall of the recessed portion and electrically connected with the second wiring portion, and a via in contact with the first wiring portion, the second wiring portion and the third wiring portion.

公开(公告)号：US20200035874A1

公开(公告)日：2020-01-30

申请号：US16519809

申请日：2019-07-23

Applicant: NICHIA CORPORATION

Inventor： Takuya NAKABAYASHI ,  Yukiko YOKOTE ,  Tadaaki IKEDA

IPC: H01L33/50 ,  H01L33/10 ,  H01L25/075 ,  F21K9/61 ,  F21K9/68

Abstract: A light-emitting device has a longitudinal direction and a width direction perpendicular to the longitudinal direction, and includes a first light-emitting element, a second light-emitting element having a peak emission wavelength different from a peak emission wavelength of the first light-emitting element and being aligned with the first light-emitting element in the longitudinal direction, a light-transmissive member covering a first element light extracting surface and a second element light extracting surface such that a portion of a light-guide member is located between the light-transmissive member and each of the first element light extracting surface and the second element light extracting surface, a first reflective member surrounding the first light-emitting element, the second light-emitting element, and the light-guide member in a top view, and a first inclined member between the first light-emitting element and the first reflective member in the longitudinal direction and having an inclined surface inclined relative to the light-transmissive member. The first inclined member is spaced apart from the light-transmissive member.