LIGHT-EMITTING DEVICE

PROBLEM TO BE SOLVED: To provide a light-emitting device capable of obtaining high-luminance light emission with a uniform light distribution and less luminance unevenness or the like.SOLUTION: The light-emitting device comprises: a base which is made of an inorganic insulating material and has a mo...

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Bibliographische Detailangaben
1. Verfasser:	NAKAYAMA KATSUHISA
Format:	Patent
Sprache:	eng
Schlagworte:	BASIC ELECTRIC ELEMENTS CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS CHEMISTRY ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR ELECTRICITY GLASS JOINING GLASS TO GLASS OR OTHER MATERIALS METALLURGY MINERAL OR SLAG WOOL SEMICONDUCTOR DEVICES SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS SURFACE TREATMENT OF GLASS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a light-emitting device capable of obtaining high-luminance light emission with a uniform light distribution and less luminance unevenness or the like.SOLUTION: The light-emitting device comprises: a base which is made of an inorganic insulating material and has a mounting surface for a light-emitting element; an element connection terminal formed on the mounting surface; a light-emitting element mounted on the mounting surface and electrically connected to the element connection terminal; a resin sealing layer provided on the mounting surface so as to cover the outside of the light-emitting element; and a light diffusion plate which is provided in contact with the resin sealing layer so as to cover an emission light extraction part and is made of a sintered compact of a glass ceramic composition containing a glass powder and a ceramic powder. In the glass ceramic composition, the content of the ceramic powder is preferably 10-20 mass% with respect to the total content of the ceramic powder and the glass powder.