公开(公告)号：US20250164836A1

公开(公告)日：2025-05-22

申请号：US19031328

申请日：2025-01-17

Applicant: NICHIA CORPORATION

Inventor： Koki SHIBAI ,  Yoshihiro SHO ,  Motokazu YAMADA ,  Naoya KASHIWAGI ,  Shimpei SASAOKA

IPC: G02F1/13357 ,  F21V7/00

Abstract: A planar light source includes a substrate, a plurality of light sources arranged on the substrate, and at least one partitioning member disposed on the substrate. The at least one partitioning member includes: a plurality of first ridges extending in a first direction; a plurality of first wall parts, each first wall part having a predetermined height, at least two sides of each first wall part facing each other; a plurality of partitioned regions, each partitioned region being partitioned by the plurality of first ridges in a plan view, the plurality of partitioned regions arranged in a second direction intersecting the first direction; at least one first cut provided on a corresponding one of the plurality of first ridges; and at least one of the light sources arranged in a corresponding one of the plurality of partitioned regions.

公开(公告)号：US20220350203A1

公开(公告)日：2022-11-03

申请号：US17660827

申请日：2022-04-26

Applicant: NICHIA CORPORATION

Inventor： Koki SHIBAI ,  Shimpei SASAOKA ,  Yoshihiro SHO ,  Naoya KASHIWAGI

IPC: G02F1/13357

Abstract: A surface light source includes a plurality of light sources, a substrate, a first member disposed on the substrate and including a plurality of recessed first demarcating portions each including a first inclined portion and a first bottom portion and one or more recessed second demarcating portions each including a second inclined portion and a first opening, and a second member overlying a portion of the first member and including a third inclined portion overlapping with the second inclined portion, a fourth inclined portion adjacent to the third inclined portion and not overlapping with the second inclined portion, a second bottom portion located inside the first opening, and a third bottom portion continuous with a lower end of the fourth inclined portion, and the plurality of light sources being respectively disposed on the substrate exposed in the first bottom portion, the second bottom portion, and the third bottom portion.

公开(公告)号：US20220404671A1

公开(公告)日：2022-12-22

申请号：US17837984

申请日：2022-06-10

Applicant: NICHIA CORPORATION

Inventor： Koki SHIBAI ,  Yoshihiro SHO ,  Motokazu YAMADA ,  Naoya KASHIWAGI ,  Shimpei SASAOKA

IPC: G02F1/13357

Abstract: A planar light source includes a substrate, light sources, and a partitioning member. The partitioning member defines partitioned regions arranged in a first direction and in a second direction that intersects the first direction. At least one of the light sources is arranged in a corresponding one of the partitioned regions. The partitioning member includes a plurality of first wall parts defining a plurality of first ridges extending in the first direction, and a plurality of second wall parts defining a plurality of second ridges extending in the second direction. The first wall parts define at least one first cut on at least one of the first ridges. At least one of the partitioned regions is surrounded by the first ridges and the second ridges in a plan view and includes an opposing pair of the first wall parts and an opposing pair of the second wall parts.

公开(公告)号：US20210313487A1

公开(公告)日：2021-10-07

申请号：US17349183

申请日：2021-06-16

Applicant: NICHIA CORPORATION

Inventor： Shimpei SASAOKA ,  Toshiyuki HASHIMOTO ,  Yoshihiro SHO ,  Toshinobu KATSUMATA

IPC: H01L33/08 ,  H01L33/10 ,  H01L33/50

Abstract: A light emitting device includes a substrate, a plurality of light sources, a partitioning member, a light transmissive member, a plurality of reflecting portions. The light sources are arranged on the substrate. Each of the light sources has a light emitting diode. The partitioning member includes a plurality of wall portions defining a plurality of sections respectively surrounding at least one of the light sources, the wall portions including top portions. The light transmissive member is arranged above the light sources. The plurality of reflecting portions are arranged on a lower surface of the light transmissive member. Lower surfaces of the reflecting portions are positioned lower than apexes of the top portions of the wall portions of the partitioning member.

公开(公告)号：US20240118572A1

公开(公告)日：2024-04-11

申请号：US18536090

申请日：2023-12-11

Applicant: NICHIA CORPORATION

Inventor： Koki SHIBAI ,  Yoshihiro SHO ,  Motokazu YAMADA ,  Naoya KASHIWAGI ,  Shimpei SASAOKA

IPC: G02F1/13357

CPC classification number: G02F1/133605 ,  G02F1/133603 ,  F21V7/0083

Abstract: A planar light source includes a substrate, light sources, and at least one partitioning member. The partitioning member includes first wall parts, second wall parts, and partitioned regions. The first wall parts define first ridges extending in a first direction. The second wall parts define second ridges extending in a second direction. The partitioned regions each is surrounded by the first ridges and the second ridges in a plan view. the partitioned regions are arranged in the first and second directions. At least one first cut is defined on at least one of the first ridges. At least one second cut is defined on at least one of the second ridges. The at least one first cut and the at least one second cut are spaced apart from each other. At least one of the light sources is arranged in a corresponding one of the partitioned regions.

公开(公告)号：US20200161516A1

公开(公告)日：2020-05-21

申请号：US16689484

申请日：2019-11-20

Applicant: NICHIA CORPORATION

Inventor： Shimpei SASAOKA ,  Toshiyuki HASHIMOTO ,  Toshinobu KATSUMATA ,  Yoshihiro SHO

IPC: H01L33/58 ,  G02B5/18 ,  H01L33/50 ,  H01L25/075

Abstract: A light emitting device includes a substrate, a demarcating member and a light-diffusing plate. The substrate has a plurality of light sources. The demarcating member includes a plurality of wall parts defining a plurality of compartments respectively corresponding to the light sources with each of the light sources being surrounded by corresponding ones of the wall parts defining a single compartment. Each of the wall parts include a ridge part and an inclined surface part. The light-diffusing plate is disposed above the light sources and having a plurality of first protrusions disposed on a first surface of the light-diffusing plate facing the substrate. Each of the first protrusions overlaps the inclined surface part of each of corresponding ones of the wall parts in a plan view. Each of the first protrusions surrounds a corresponding one of the light sources in the plan view.