公开(公告)号：US10134944B2

公开(公告)日：2018-11-20

申请号：US15957692

申请日：2018-04-19

Applicant: NICHIA CORPORATION

Inventor： Hiroyuki Inoue ,  Tomohiro Shimooka

IPC: H01L33/00 ,  H01L33/20 ,  H01L33/32 ,  H01L33/12

Abstract: A light-emitting element includes: a sapphire substrate including: a principal surface that is in a c-plane of the sapphire substrate, and a plurality of projections on the principal surface, wherein each of the plurality of projections has a shape of pseudo-hexagonal pyramid including six lateral surfaces, each of the six lateral surfaces including an inwardly curved surface portion, and wherein, in a top view of the sapphire substrate, each of the plurality of projections has a shape of a pseudo-hexagon; and a semiconductor layered body comprising a nitride semiconductor on the principal surface side of the sapphire substrate, the semiconductor layered body including an active layer.

公开(公告)号：US20170155014A1

公开(公告)日：2017-06-01

申请号：US15361222

申请日：2016-11-25

Applicant: NICHIA CORPORATION

Inventor： Hiroyuki Inoue ,  Tomohiro Shimooka

IPC: H01L33/22 ,  H01L33/12 ,  C30B25/18 ,  H01L33/00 ,  C30B29/20 ,  C30B29/40 ,  H01L33/06 ,  H01L33/32

CPC classification number: H01L33/007 ,  H01L33/12 ,  H01L33/20 ,  H01L33/32

Abstract: A light-emitting element includes a sapphire substrate including: a principal surface that is in a c-plane of the sapphire substrate, and a plurality of projections on the principal surface, wherein each of the plurality of projections has a shape of pseudo-hexagonal pyramid including six lateral surfaces, each of the six lateral surfaces including an inwardly curved surface portion, and wherein, in a top view of the sapphire substrate, each of the plurality of projections has a shape of a pseudo-hexagon that includes first curved lines and second curved lines that are alternately connected to one another, the first curved lines being curved toward a center of a corresponding hexagon and disposed between respective adjacent pairs of six vertices of the hexagon, and the second curved lines passing through respective vertices of the hexagon; and a semiconductor layered body comprising a nitride semiconductor on the principal surface side of the sapphire substrate, the semiconductor layered body including an active layer.

公开(公告)号：US10442987B2

公开(公告)日：2019-10-15

申请号：US16118209

申请日：2018-08-30

Applicant: NICHIA CORPORATION

Inventor： Toru Takasone ,  Masahiko Sano ,  Hiroyuki Inoue ,  Shoichi Yamada ,  Takafumi Sugiyama

IPC: C09K11/02 ,  F21V29/502 ,  C09K11/77 ,  F21V9/30 ,  F21V13/08 ,  F21V7/30 ,  C04B35/115 ,  C04B35/117 ,  C04B38/00 ,  C09D5/22 ,  H01L33/50 ,  C04B35/64 ,  H01L33/64 ,  C04B111/80

Abstract: A fluorescent member includes: a plurality of fluorescent particles; an inorganic binder; and a plurality of pores. An upper surface of the fluorescent member is a light extraction surface of the fluorescent member. The plurality of pores are localized in a vicinity of at least one of the plurality of fluorescent particles in a cross section that is parallel to the upper surface of the fluorescent member and extends through the fluorescent particles and the pores.

公开(公告)号：US09978903B2

公开(公告)日：2018-05-22

申请号：US15361222

申请日：2016-11-25

Applicant: NICHIA CORPORATION

Inventor： Hiroyuki Inoue ,  Tomohiro Shimooka

IPC: H01L33/00 ,  H01L33/32 ,  H01L33/20 ,  H01L33/12

CPC classification number: H01L33/007 ,  H01L33/12 ,  H01L33/20 ,  H01L33/32

Abstract: A light-emitting element includes a sapphire substrate including: a principal surface that is in a c-plane of the sapphire substrate, and a plurality of projections on the principal surface, wherein each of the plurality of projections has a shape of pseudo-hexagonal pyramid including six lateral surfaces, each of the six lateral surfaces including an inwardly curved surface portion, and wherein, in a top view of the sapphire substrate, each of the plurality of projections has a shape of a pseudo-hexagon that includes first curved lines and second curved lines that are alternately connected to one another, the first curved lines being curved toward a center of a corresponding hexagon and disposed between respective adjacent pairs of six vertices of the hexagon, and the second curved lines passing through respective vertices of the hexagon; and a semiconductor layered body comprising a nitride semiconductor on the principal surface side of the sapphire substrate, the semiconductor layered body including an active layer.