公开(公告)号：US11868005B2

公开(公告)日：2024-01-09

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 ,  F21V7/00

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

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：US12153306B2

公开(公告)日：2024-11-26

申请号：US18192583

申请日：2023-03-29

Applicant: NICHIA CORPORATION

Inventor： Koki Shibai ,  Naoya Kashiwagi ,  Shimpei Sasaoka

IPC: G02F1/13357

Abstract: A planar light source has a plurality of light sources, a substrate, and a partitioning member. The partitioning member includes a first member provided with first partitioned parts each having a first bottom part and first oblique parts surrounding the first bottom part that are arranged on the substrate in a matrix, and a second member provided with second partitioned parts each having a second bottom part and second oblique parts surrounding the second bottom part that are arranged on the substrate in a matrix. The first member further has first outer oblique parts overlapping the second oblique parts located along the outer edge of the second member on the first member side. The first bottom parts and the second bottom parts each have a light source disposition opening, and the light sources are individually disposed on the substrate exposed in the light source disposition openings.

公开(公告)号：US12125953B2

公开(公告)日：2024-10-22

申请号：US17456556

申请日：2021-11-24

Applicant: NICHIA CORPORATION

Inventor： Shimpei Sasaoka ,  Toshiyuki Hashimoto ,  Toshinobu Katsumata ,  Naoya Kashiwagi

IPC: H01L33/54 ,  H01L33/00 ,  H01L33/48 ,  H01L33/56

CPC classification number: H01L33/54 ,  H01L33/005 ,  H01L33/486 ,  H01L33/56 ,  H01L2933/005

Abstract: A method for manufacturing a light emitting device according to the present invention includes: providing an intermediate member including: a support member including: housing portions, the housing portions having first recessed portion(s) each having a lateral wall and a bottom surface, and a coupling portion located between adjacent ones of the housing portions and having a height lower than a height of the lateral wall with reference to the bottom surface of the first recessed portion, a light source mounted on the bottom surface of the first recessed portion, and an encapsulant disposed in the first recessed portion; and forming a first light-transmissive member continuously covering the housing portions and the coupling portion. An inclined surface of the first light-transmissive member has a height above the coupling portion is lower than a height above the housing portions with reference to the bottom surface of the first recessed portion.

公开(公告)号：US12235542B2

公开(公告)日：2025-02-25

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 ,  F21V7/00

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：US11650457B2

公开(公告)日：2023-05-16

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

CPC classification number: G02F1/133608 ,  G02F1/133603 ,  G02F1/133606

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：US11650455B2

公开(公告)日：2023-05-16

申请号：US17869682

申请日：2022-07-20

Applicant: NICHIA CORPORATION

Inventor： Toshinobu Katsumata ,  Toshiyuki Hashimoto ,  Naoya Kashiwagi

IPC: G02F1/13357

CPC classification number: G02F1/133603 ,  G02F1/133606 ,  G02F2201/56

Abstract: A planar light source includes a mounting substrate, a plurality of light sources, a partition member, a frame body, a wavelength conversion member, and a light diffusion plate. The light sources are arranged two-dimensionally on the mounting substrate in a plan view. The partition member includes a wall portion surrounding each of the light sources except for outermost ones of the light sources in the plan view. The wall portions are located inward of the outermost ones of the light sources. The frame body has a bottom portion and a lateral wall surrounding the mounting substrate. The wavelength conversion member is disposed on the lateral wall of the frame body. The light diffusion plate is disposed above the plurality of light sources and the wavelength conversion member.

公开(公告)号：US11428984B2

公开(公告)日：2022-08-30

申请号：US17331479

申请日：2021-05-26

Applicant: NICHIA CORPORATION

Inventor： Toshinobu Katsumata ,  Toshiyuki Hashimoto ,  Naoya Kashiwagi

IPC: G02F1/13357

Abstract: A planar light source includes an irregular-shaped mounting substrate, light sources arranged along first and second directions in a plan view, and a light diffusion plate including a thick plate portion and a thin plate portion outward of outermost light sources in the plan view. In the first direction, a distance between an optical axis of one first distal-end light source of one array and an outer edge of the light diffusion plate is greater than a distance between that of another first distal-end light source of another array and the outer edge. In a plan view, the thin plate portion has a width along a straight line along the first direction from the optical axis of the one first distal-end light source toward the outer edge greater than a width along a straight line from the optical axis of the second distal-end light source toward the outer edge.