Nichia Corporation

Hiroyuki Inoue

Tomohiro Shimooka

Masahiko Sano

Takafumi Sugiyama

Toru Takasone

Shoichi Yamada

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.

Fluorescent member, optical component, and light emitting device

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.

Light-emitting element and method for producing the same

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.

Growing community of inventors

Itano-gun, Japan

Hiroyuki Inoue