Nichia Corporation

Yasunori Shimizu

Hirofumi Ichikawa

Akihiro Ota

Masafumi Kuramoto

Seitaro Akagawa

Akiko Yamasaki

Hiroto Tamaki

Shoji Hosokawa

Tadao Hayashi

Tomoki Tanisada

A light emitting device includes a base substrate having a recessed portion at a flat upper surface thereof. The recessed portion has an inner wall. A sealing member is provided in the recessed portion. The sealing member contains surface-treated particles, or particles coexisting with a dispersing agent. The particles have a particle diameter of 1 nm or more and 100 &#x3bc;m or less. The particles are made of an organic material or an inorganic material. The organic material and the inorganic material are free of a phosphor. The at least a part of an edge portion of the sealing member is a region located in the vicinity of an edge of the recessed portion which is a boundary between a surface of the inner wall and the flat upper surface. The at least one of the particles and aggregates of particles are unevenly distributed in the region.

Light emitting device

A light emitting device includes at least one light emitting element including a plurality of semiconductor layers; and a light transmissive sealing member covering the at least one light emitting element. The light transmissive sealing member comprises a light transmissive sealing resin containing a silicone resin having a siloxane bond scaffold having methyl and phenyl groups as a principal ingredient. The light transmissive sealing resin has a refractive index in a range between 1.45 and 1.52, a durometer type D hardness at 25&#xb0; C. specified by JIS K 6253 in a range between 20 and 70, and a DMA tan &#x3b4;-based glass transition temperature (Tg) in a range between 20&#xb0; C. and 70&#xb0; C.

Light emitting device having silicone resin-based sealing member

A light emitting device () according to the present disclosure includes a base substrate () having a recessed portion () at its upper surface (); a light emitting element () provided in the recessed portion (); and a sealing member () provided in the recessed portion (), in which the sealing member () contains surface-treated particles (), or particles () coexisting with a dispersing agent, and at least a part of an edge portion of the sealing member () is a region located in the vicinity of an edge () of the recessed portion, and in which at least one of the particles () and aggregates () of particles are unevenly distributed.

Provided a light emitting device comprising: a package; a light emitting element disposed in the package; an encapsulation member that covers the light emitting element, the encapsulation member being formed from a resin composition that contains a fluorescent material, a resin, and nanoparticles selected from at least one of the group consisting of aluminum oxide nanoparticles, titanium oxide nanoparticles, zinc oxide nanoparticles, zirconium oxide nanoparticles, and silicon oxide nanoparticles, wherein when the resin composition includes silicon oxide nanoparticles, the content of the silicon oxide nanoparticles is 0.02 to 5 mass parts relative to 100 mass parts of the resin; and wherein the fluorescent material is a red-light emitting fluorescent material including a fluoride material having a chemical composition that includes tetravalent manganese, at least one selected from the group consisting of alkali metal elements and NH, and at least one selected from the group consisting of elements from Group 4 of the periodic table and elements from Group 14 of the periodic table.

Light emitting device and resin composition

Provided a light emitting device comprising:

A light emitting device includes a metal reflecting member, a light emitting element fixed to the metal reflecting member, a glass film that covers the metal reflecting member and has Si&#x2014;N bonds, and a translucent resin that covers the glass film.

Growing community of inventors

Tokushima, Japan

Yasunori Shimizu