公开(公告)号：US20170103971A1

公开(公告)日：2017-04-13

申请号：US15287757

申请日：2016-10-07

Applicant: NICHIA CORPORATION

Inventor： Kazuya TAMURA

IPC: H01L25/075 ,  H01L33/38 ,  F21V7/00

CPC classification number: H01L25/0753 ,  F21V7/00 ,  H01L33/20 ,  H01L33/38 ,  H01L33/46 ,  H01L33/56

Abstract: A light emitting device includes a package including a recess which includes a bottom surface having a substantially circular shape with a circular center, and light emitting elements provided on the bottom surface. Each of the light emitting elements has a substantially regular hexagonal shape. The light emitting elements include a first light emitting element, second light emitting elements provided to surround the first light emitting element, and a light reflective resin disposed between the first light emitting element and the second light emitting elements. The first light emitting element has an element center of the substantially regular hexagonal shape and is disposed on the bottom surface so that the element center substantially coincides with the circular center. Each side of the substantially regular hexagonal shape of the first light emitting element opposes one side of each of the substantially regular hexagonal shapes of the second light emitting elements.

公开(公告)号：US20240328604A1

公开(公告)日：2024-10-03

申请号：US18618696

申请日：2024-03-27

Applicant: NICHIA CORPORATION

Inventor： Kazuya TAMURA ,  Hirofumi YOSHIDA ,  Yoshiki ENDO

IPC: F21V17/10 ,  F21V9/30 ,  F21V31/00

CPC classification number: F21V17/101 ,  F21V9/30 ,  F21V31/005

Abstract: A light-emitting device includes a base member having an upper surface and a recess on an upper surface side; a light-emitting element disposed in the recess and configured to emit ultraviolet light; a light-transmissive member disposed on the upper surface; a first inorganic adhesive member disposed on the light-transmissive member; and a lens bonded to the light-transmissive member with the first inorganic adhesive member. An absolute value of a difference in linear expansion coefficient between the base member and the light-transmissive member is smaller than an absolute value of a difference in linear expansion coefficient between the base member and the lens.

公开(公告)号：US20240322095A1

公开(公告)日：2024-09-26

申请号：US18612487

申请日：2024-03-21

Applicant: NICHIA CORPORATION

Inventor： Kazuya TAMURA ,  Takeshi KUSUSE

IPC: H01L33/60

CPC classification number: H01L33/60 ,  H01L2933/0058

Abstract: A light-emitting device includes a package having a recessed portion, a light-emitting element placed on a bottom surface of the recessed portion at a position away from an inner lateral surface of the recessed portion, and a light-reflective member disposed between the light-emitting element and the inner lateral surface so as to surround the light-emitting element at a position away from the light-emitting element and having a light reflecting surface configured to reflect light emitted from the light-emitting element. The light reflecting surface is inclined with respect to the bottom surface in a direction from the inner lateral surface toward the light-emitting element, and has different light reflection characteristics at different positions with different heights from the bottom surface to the light reflecting surface.

公开(公告)号：US20230100081A1

公开(公告)日：2023-03-30

申请号：US17936306

申请日：2022-09-28

Applicant: NICHIA CORPORATION

Inventor： Taekshi KUSUSE ,  Kazuya TAMURA ,  Daisuke KISHIKAWA ,  Takuya YAMANOI ,  Takaaki TADA ,  Kenji OZEKI

IPC: G02B5/02 ,  G02B5/08

Abstract: A light emitting device includes a light emitting element and a light reflecting member that reflects light emitted from the light emitting element. The light reflecting member comprises plate-shaped light reflective particles, silica, and an alkali metal. An average particle size of the light reflective particles is 0.6 μm to 43 μm, and an average aspect ratio of the light reflective particles is 10 or higher.

公开(公告)号：US20200013936A1

公开(公告)日：2020-01-09

申请号：US16506125

申请日：2019-07-09

Applicant: NICHIA CORPORATION

Inventor： Masato AIHARA ,  Kenji OZEKI ,  Atsushi KOJIMA ,  Chinami NAKAI ,  Kazuya TAMURA

IPC: H01L33/60 ,  H01L25/075 ,  H01L33/62 ,  H01L33/64

Abstract: A light emitting device includes: a light emitting element; a first reflecting member containing reflecting particles, and covering the upper surface of a base while exposing a light extraction surface of the light emitting element; a first cover member having a lower concentration of reflecting particles than the first reflecting member and covering the first reflecting member and a portion of lateral surfaces of the light emitting element while exposing the light extraction surface of the light emitting element; a second cover member covering a portion of the lateral surfaces of the light emitting element; a second reflecting member surrounding the second cover member in a top view and contacting the second cover member and the first reflecting member; the second reflecting member having a narrow-width portion being in contact with the first reflecting member and a wide-width portion located above the narrow-width portion in a cross-sectional view.

公开(公告)号：US20230238492A1

公开(公告)日：2023-07-27

申请号：US18192241

申请日：2023-03-29

Applicant: NICHIA CORPORATION

Inventor： Takeshi KUSUSE ,  Kazuya TAMURA

IPC: H01L33/60 ,  H01L33/56

CPC classification number: H01L33/60 ,  H01L33/56 ,  H01L2933/005 ,  H01L2933/0058

Abstract: Provided is a light-emitting device including a light-emitting element, and a light-reflective covering member that covers the light-emitting element. The light-reflective covering member includes a light-reflective material having a plate shape, silica, and an alkali metal. The light-reflective material has a mean particle size of a range of 0.6 μm to 43 μm, and the light-reflective material has an average aspect ratio of 10 or greater.

公开(公告)号：US20190280170A1

公开(公告)日：2019-09-12

申请号：US16270137

申请日：2019-02-07

Applicant: NICHIA CORPORATION

Inventor： Yoshiki SATO ,  Kazuya TAMURA

IPC: H01L33/56 ,  H01L33/62

Abstract: A method for manufacturing a light emitting device includes: a substrate preparation step for preparing a substrate having a first region on which a plurality of light emitting devices are formed, and a second region surrounding the first region; a reinforcing member forming step for forming a reinforcing member by applying a resin material on the second region and hardening the resin material; a mounting step for mounting a plurality of light emitting elements on the first region; a light-transmissive member placing step for forming a plurality of light-transmissive members respectively on the light emitting elements; a sealing member forming step for sealing the plurality of light emitting elements and the plurality of light-transmissive members using a sealing member; and a cutting step for cutting. the substrate and the sealing member and separating into individual light emitting devices,