公开(公告)号：US11195977B2

公开(公告)日：2021-12-07

申请号：US17020280

申请日：2020-09-14

Applicant: NICHIA CORPORATION

Inventor： Takuya Nakabayashi ,  Tetsuya Ishikawa

IPC: H01L33/50 ,  H01L33/60

Abstract: A light emitting device includes a light emitting element including a first surface; a light guide member covering at least a part of a lateral surface of the light emitting element; a first wavelength conversion member covering the first surface and including a first wavelength conversion particles; and a reflective member being in contact with the light emitting element. The first wavelength conversion member has a thickness of 60 μm or more and 120 μm or less. The first wavelength conversion particles have an average particle size of 4 μm or longer and 12 μm or smaller; the first wavelength conversion particles have a central particle size of 4 μm or longer and 12 μm or smaller. A weight ratio of the first wavelength conversion particles is 60% by weight or more and 75% by weight or less with respect to the total weight of the first wavelength conversion member.

公开(公告)号：US11038089B2

公开(公告)日：2021-06-15

申请号：US16898388

申请日：2020-06-10

Applicant: NICHIA CORPORATION

Inventor： Tadaaki Ikeda ,  Takuya Nakabayashi

IPC: H01L33/50 ,  C09K11/02 ,  C09K11/61 ,  C08K3/34 ,  C09K11/08 ,  C09K11/77 ,  H01L33/56 ,  H01L33/60 ,  H01L33/46

Abstract: A light emitting device is provided. The light emitting device includes a light emitting element, which emits blue light, and a light transmissive member having a first principal face bonded to the light emitting element and a second principal face opposite the first principal face. The light transmissive member has a light transmissive base material and wavelength conversion substances, which are contained in the base material and which absorb the light from the light emitting element and emit light. The wavelength conversion substances are localized in the base material towards the first principal face, and include a first phosphor which emits green to yellow light and a second phosphor which emits red light. The first phosphor is more localized towards the first principal face than the second phosphor. The second phosphor is a manganese-activated fluoride phosphor.

公开(公告)号：US10950772B2

公开(公告)日：2021-03-16

申请号：US16906687

申请日：2020-06-19

Applicant: NICHIA CORPORATION

Inventor： Takuya Nakabayashi ,  Gensui Tamura

IPC: H01L33/00 ,  H01L33/64 ,  H01L33/48 ,  H01L33/62 ,  H01L33/60

Abstract: A light 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：US10734555B2

公开(公告)日：2020-08-04

申请号：US16134002

申请日：2018-09-18

Applicant: NICHIA CORPORATION

Inventor： Tadaaki Ikeda ,  Takuya Nakabayashi

IPC: H01L33/50 ,  C09K11/02 ,  C09K11/61 ,  C08K3/34 ,  C09K11/08 ,  C09K11/77 ,  H01L33/56 ,  H01L33/60 ,  H01L33/46

Abstract: A light emitting device is provided. The light emitting device includes a light emitting element, which emits blue light, and a light transmissive member having a first principal face bonded to the light emitting element and a second principal face opposite the first principal face. The light transmissive member has a light transmissive base material and wavelength conversion substances, which are contained in the base material and which absorb the light from the light emitting element and emit light. The wavelength conversion substances are localized in the base material towards the first principal face, and include a first phosphor which emits green to yellow light and a second phosphor which emits red light. The first phosphor is more localized towards the first principal face than the second phosphor. The second phosphor is a manganese-activated fluoride phosphor.

公开(公告)号：US10608154B2

公开(公告)日：2020-03-31

申请号：US16229666

申请日：2018-12-21

Applicant: NICHIA CORPORATION

Inventor： Takuya Nakabayashi ,  Gensui Tamura

IPC: H01L33/00 ,  H01L33/64 ,  H01L33/48 ,  H01L33/62 ,  H01L33/60

Abstract: A light 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：US10600942B2

公开(公告)日：2020-03-24

申请号：US16218292

申请日：2018-12-12

Applicant: NICHIA CORPORATION

Inventor： Suguru Beppu ,  Yoichi Bando ,  Hiroto Tamaki ,  Takuya Nakabayashi

IPC: H01L33/60 ,  H01L33/50 ,  H01L21/3213

Abstract: A light emitting device includes a semiconductor light emitting element; and a light reflective member having a multilayer structure and covering the side faces of the semiconductor light emitting element. The light reflective member includes: a first layer disposed on an inner, semiconductor light emitting element side, the first layer comprising a light-transmissive resin containing a light reflective substance, and a second layer disposed in contact with an outer side of the first layer, the second layer comprising a light-transmissive resin containing the light reflective substance at a lower content than that of the first layer.

公开(公告)号：US10559735B2

公开(公告)日：2020-02-11

申请号：US16405651

申请日：2019-05-07

Applicant: NICHIA CORPORATION

Inventor： Takuya Nakabayashi ,  Akira Hori

IPC: H01L33/48 ,  H01L33/64 ,  H01L33/54 ,  H01L33/50 ,  H01L33/62 ,  H01L33/56 ,  H01L33/32 ,  H01L33/60 ,  H01L25/075

Abstract: A light emitting device includes a substrate, a light emitting element and a light transmissive member. The substrate has a first main surface, a second main surface, and a mounting surface. The substrate includes an insulating base material defining a concave component opening on the second main surface and the mounting surface, a pair of connection terminals disposed on the first main surface, a pair of external connection sections disposed on the second main surface, and a pair of vias arranged at positions that interpose therebetween a line passing through a center of the concave component when viewed along a direction normal to the second main surface. The light emitting element has a pair of electrodes which connect to element connection sections of the pair of connection terminals. The light transmissive member is disposed on an upper surface of the light emitting element.

公开(公告)号：US10522729B2

公开(公告)日：2019-12-31

申请号：US16157997

申请日：2018-10-11

Applicant: NICHIA CORPORATION

Inventor： Takuya Nakabayashi

IPC: H01L33/60 ,  H01L33/36 ,  H01L33/50 ,  H01L33/62 ,  H01L23/00 ,  H01L33/48 ,  H01L25/075

Abstract: A light emitting device includes a substrate, a light emitting element, and a light reflecting member. The substrate includes a base material having a rectangular planar shape, a connection terminal disposed on a first main surface of the base material, and an outer connection portion disposed on a second main surface of the base material opposite to the first main surface. The connection terminal includes a protruding portion, and the connection terminal is connected to the outer connection portion via a through hole defined in the base material. The light emitting element is connected to the connection terminal on the first main surface of the base material via a molten bonding material. The light reflecting member covers the light emitting element.

公开(公告)号：US10446725B2

公开(公告)日：2019-10-15

申请号：US15888266

申请日：2018-02-05

Applicant: NICHIA CORPORATION

Inventor： Takuya Nakabayashi ,  Tadaaki Ikeda

IPC: H01L33/60 ,  H01L25/075 ,  H01L23/00 ,  H01L33/62 ,  C09K11/08 ,  C09K11/61 ,  C09K11/77 ,  H01L33/50 ,  H01L33/48 ,  H01L33/64

Abstract: A light emitting device includes a mounting board, first and second light emitting elements and a light reflective covering member. The mounting board includes an insulating base, first and second lands arranged, and an intermediate part arranged between the first and second lands. The first and second light emitting elements are flip-chip mounted on the first and second lands, respectively. The light reflective covering member is provided above the intermediate part and covers lateral surfaces of the first and second light emitting elements. The light reflective covering member defines a recess part arranged above the intermediate part with a bottom of the recess part being positioned below top surfaces of the first and second light emitting elements and above the top surface of the intermediate part, and a surface of the light reflective covering member defining the recess part constitutes a part of an outer surface of the light emitting device.

公开(公告)号：US10366945B2

公开(公告)日：2019-07-30

申请号：US15427711

申请日：2017-02-08

Applicant: NICHIA CORPORATION

Inventor： Takuya Nakabayashi

IPC: H01L23/495 ,  H01L21/48 ,  H01L33/62 ,  H01L23/00 ,  H01L33/54 ,  H01L33/56

Abstract: A lead frame includes at least one row of a plurality of unit regions arranged in a first direction. Each of the unit regions includes: a first lead; a second lead; and an isolation region configured to isolate the first lead from the second lead, the isolation region including a bent portion that is located at an end part of the second lead. The first lead has an extending portion extending along the end part of the second lead. The plurality of unit regions includes a first unit region, and a second unit region that is adjacent to the first unit region in the first direction. The first lead of the first unit region is connected to the first lead or second lead of the second unit region via the extending portion.