Nichia Corporation

Yuji Akazawa

Koichi Okada

Hideki Yoshida

Hirofumi Ooguri

A method of producing a modified fibrous wollastonite is provided. The method includes hydrothermally treating a fibrous wollastonite.

Modified fibrous wollastonite and method of producing the same

A filling material for a resin composition includes a base material and a coating material coating at least a portion of a surface of a particle of the base material. The base material comprises a first inorganic compound containing a Group II element. The coating material comprises a second inorganic compound containing the Group II element and is different from the first inorganic compound. A method of manufacturing the filling material is provided. A resin composition comprising the filling material, a package, a light-emitting device, and methods of manufacturing them are also provided.

Filling material, resin composition, package, and light-emitting device

A filling material for a resin composition includes a base material, a coating material coating at least a portion of a surface of a particle of the base material, and a light-reflective material disposed on the surface of the particle of the base material and supported by the coating material. The base material includes a first inorganic compound containing a Group II element. The coating material includes a second inorganic compound containing the Group II element. The second inorganic compound is different from the first inorganic compound. The light-reflective material includes a third inorganic compound having a refractive index higher than a refractive index of the first inorganic compound. A method of manufacturing the filling material is provided. A resin composition including the filling material, a package, a light-emitting device, and methods of manufacturing them are also provided.

Filling material, resin composition, package, light-emitting device, and methods of manufacturing same

A light emitting device comprising: a base; a light emitting element arranged on a surface of the base; a first resin layer arranged to surround a side portion of the light emitting element and to be spaced apart from the side portion; and a second resin layer arranged on the surface of the base, the second resin layer being present at least on a top of the light emitting element, on a top of the first resin layer, and in an area between the light emitting element and the first resin layer, wherein the first resin layer comprises a light transmissive resin and a first fluorescent material, wherein the second resin layer comprises a light transmissive resin and a second fluorescent material, and wherein the second fluorescent material exhibits higher heat resistance than that of the first fluorescent material.

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Tokushima, Japan

Yuji Akazawa