公开(公告)号：US11355681B2

公开(公告)日：2022-06-07

申请号：US16772847

申请日：2018-11-29

Applicant: NICHIA CORPORATION

Inventor： Shoichi Kashihara ,  Masanobu Sato

IPC: H01L33/58 ,  H01L33/00 ,  H01L33/50 ,  H01L33/56

Abstract: A light emitting device including a fluorescent material with reduced hue, and a method of manufacturing the light emitting device are provided.
A light emitting device 100 includes: a light emitting element 1; a first light-transmissive member 3 covering the light emitting element 1; and a light diffusing member 5 contained in the first light-transmissive member 3. The light diffusing member 5 includes hollow particles. The surface of the first light-transmissive member 3 has irregular shapes attributed to the light diffusing member 5. The first light-transmissive member 3 is covered with a second light-transmissive member 4. The second light-transmissive member 4 has a convex structure in which the center is the uppermost point. The irregular shapes attributed to the light diffusing member 5 are covered with the second light-transmissive member 4.

公开(公告)号：US20190237639A1

公开(公告)日：2019-08-01

申请号：US16262612

申请日：2019-01-30

Applicant: NICHIA CORPORATION

Inventor： Shoichi Kashihara ,  Masanobu Sato ,  Tomohisa Kishimoto

IPC: H01L33/50 ,  H01L33/58 ,  H01L33/08

CPC classification number: H01L33/508 ,  H01L33/08 ,  H01L33/507 ,  H01L33/58 ,  H01L2933/0058

Abstract: A light-emitting device includes: at least one light-emitting element; a first light-transmissive member covering the light-emitting element; a second light-transmissive member covering the first light-transmissive member; and a light-diffusing member in the second light-transmissive member. The light-diffusing member comprises hollow particles. The second light-transmissive member has a bottom surface having irregularities due to presence of the light-diffusing member.

公开(公告)号：US11621379B2

公开(公告)日：2023-04-04

申请号：US17181780

申请日：2021-02-22

Applicant: NICHIA CORPORATION

Inventor： Shoichi Kashihara ,  Masanobu Sato ,  Toshimasa Amiya

IPC: H01L33/00 ,  H01L33/54 ,  H01L33/50 ,  H01L33/48 ,  H01L25/075 ,  H01L33/56 ,  H01L33/30 ,  H01L33/62 ,  H01L33/64

Abstract: A light-emitting device 100 includes: a light-emitting element; a light-transmissive member covering the light-emitting element; and a light-diffusing agent contained in the light-transmissive member and comprising hollow particles. The light-transmissive member has a first surface having irregularities according to the light-diffusing agent. The first surface of the light-transmissive member has a convex shape with a height gradually increased from a peripheral portion of the first surface toward a central portion of the first surface.

公开(公告)号：US20190237641A1

公开(公告)日：2019-08-01

申请号：US16262284

申请日：2019-01-30

Applicant: NICHIA CORPORATION

Inventor： Shoichi Kashihara ,  Masanobu Sato ,  Toshimasa Amiya

IPC: H01L33/54 ,  H01L33/50 ,  H01L33/48 ,  H01L25/075 ,  H01L33/56

CPC classification number: H01L33/54 ,  H01L25/0753 ,  H01L33/30 ,  H01L33/486 ,  H01L33/505 ,  H01L33/508 ,  H01L33/56 ,  H01L33/62 ,  H01L33/647 ,  H01L2933/0041 ,  H01L2933/005 ,  H01L2933/0091

Abstract: A light-emitting device 100 includes: a light-emitting element; a light-transmissive member covering the light-emitting element; and a light-diffusing agent contained in the light-transmissive member and comprising hollow particles. The light-transmissive member has a first surface having irregularities according to the light-diffusing agent. The first surface of the light-transmissive member has a convex shape with a height gradually increased from a peripheral portion of the first surface toward a central portion of the first surface.

公开(公告)号：US11996504B2

公开(公告)日：2024-05-28

申请号：US18112916

申请日：2023-02-22

Applicant: NICHIA CORPORATION

Inventor： Shoichi Kashihara ,  Masanobu Sato ,  Toshimasa Amiya

IPC: H01L33/00 ,  H01L25/075 ,  H01L33/48 ,  H01L33/50 ,  H01L33/54 ,  H01L33/56 ,  H01L33/30 ,  H01L33/62 ,  H01L33/64

CPC classification number: H01L33/54 ,  H01L25/0753 ,  H01L33/486 ,  H01L33/505 ,  H01L33/508 ,  H01L33/56 ,  H01L33/30 ,  H01L33/62 ,  H01L33/647 ,  H01L2933/0041 ,  H01L2933/005 ,  H01L2933/0091

Abstract: A light-emitting device 100 includes: a light-emitting element; a light-transmissive member covering the light-emitting element; and a light-diffusing agent contained in the light-transmissive member and comprising hollow particles. The light-transmissive member has a first surface having irregularities according to the light-diffusing agent. The first surface of the light-transmissive member has a convex shape with a height gradually increased from a peripheral portion of the first surface toward a central portion of the first surface.

公开(公告)号：US10964859B2

公开(公告)日：2021-03-30

申请号：US16262284

申请日：2019-01-30

Applicant: NICHIA CORPORATION

Inventor： Shoichi Kashihara ,  Masanobu Sato ,  Toshimasa Amiya

IPC: H01L33/00 ,  H01L33/54 ,  H01L33/50 ,  H01L33/48 ,  H01L25/075 ,  H01L33/56 ,  H01L33/30 ,  H01L33/62 ,  H01L33/64

Abstract: A light-emitting device 100 includes: a light-emitting element; a light-transmissive member covering the light-emitting element; and a light-diffusing agent contained in the light-transmissive member and comprising hollow particles. The light-transmissive member has a first surface having irregularities according to the light-diffusing agent. The first surface of the light-transmissive member has a convex shape with a height gradually increased from a peripheral portion of the first surface toward a central portion of the first surface.

公开(公告)号：US11990573B2

公开(公告)日：2024-05-21

申请号：US17733380

申请日：2022-04-29

Applicant: NICHIA CORPORATION

Inventor： Shoichi Kashihara ,  Masanobu Sato

IPC: H01L33/58 ,  H01L33/00 ,  H01L33/50 ,  H01L33/56

CPC classification number: H01L33/58 ,  H01L33/005 ,  H01L33/50 ,  H01L33/56 ,  H01L2933/0058

Abstract: A light emitting device including a fluorescent material with reduced hue, and a method of manufacturing the light emitting device are provided.
A light emitting device 100 includes: a light emitting element 1; a first light-transmissive member 3 covering the light emitting element 1; and a light diffusing member 5 contained in the first light-transmissive member 3. The light diffusing member 5 includes hollow particles. The surface of the first light-transmissive member 3 has irregular shapes attributed to the light diffusing member 5. The first light-transmissive member 3 is covered with a second light-transmissive member 4. The second light-transmissive member 4 has a convex structure in which the center is the uppermost point. The irregular shapes attributed to the light diffusing member 5 are covered with the second light-transmissive member 4.

公开(公告)号：US11355678B2

公开(公告)日：2022-06-07

申请号：US16262612

申请日：2019-01-30

Applicant: NICHIA CORPORATION

Inventor： Shoichi Kashihara ,  Masanobu Sato ,  Tomohisa Kishimoto

IPC: H01L33/00 ,  H01L33/50 ,  H01L33/58 ,  H01L33/08

Abstract: A light-emitting device includes: at least one light-emitting element; a first light-transmissive member covering the light-emitting element; a second light-transmissive member covering the first light-transmissive member; and a light-diffusing member in the second light-transmissive member. The light-diffusing member includes hollow particles. The second light-transmissive member has a bottom surface having irregularities due to presence of the light-diffusing member.

公开(公告)号：US10454007B2

公开(公告)日：2019-10-22

申请号：US16005580

申请日：2018-06-11

Applicant: NICHIA CORPORATION

Inventor： Shoichi Kashihara ,  Masanobu Sato

IPC: H01L33/58 ,  H01L33/56 ,  H01L33/50 ,  G02B5/02

Abstract: A light-emitting device includes: a light-emitting element; a light-transmissive member that covers the light-emitting element; and a light-diffusing particles contained in the light-transmissive member. The light-diffusing particles are hollow and have a particle size not smaller than 50 μm. The light-transmissive member has a surface having irregularities associated with the light-diffusing particles. A method for manufacturing a light-emitting device includes steps of: mounting a light-emitting element in a recess of a base member; injecting a silicone resin containing light-diffusing particles into the recess, the light-diffusing particles having a particle size not smaller than 50 μm; causing the light-diffusing particles to float up to a surface of the injected silicone resin; and curing the injected silicone resin.