SUBSTRATE FOR MOUNTING LIGHT-EMITTING ELEMENT, AND LIGHT-EMITTING ELEMENT MODULE

There are provided a light-emitting element mounting substrate which exhibits high reflectivity, and a light-emitting module having high reliability and high luminance. A light-emitting element mounting substrate includes an alumina sintered body containing alumina crystal, zirconia crystal, and gra...

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Bibliographic Details
Main Authors TOYODA, Satoshi, TAKENOSHITA, Hidehiro, FURUTACHI, Kenichi
Format Patent
LanguageEnglish
French
German
Published 09.10.2019
Subjects
ARTIFICIAL STONE
BASIC ELECTRIC ELEMENTS
CEMENTS
CERAMICS
CHEMISTRY
COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS
CONCRETE
ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
LIME, MAGNESIA
METALLURGY
REFRACTORIES
SEMICONDUCTOR DEVICES
SLAG
TREATMENT OF NATURAL STONE
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Summary:There are provided a light-emitting element mounting substrate which exhibits high reflectivity, and a light-emitting module having high reliability and high luminance. A light-emitting element mounting substrate includes an alumina sintered body containing alumina crystal, zirconia crystal, and grain boundary phase, wherein an intensity ratio I t /I m between a peak intensity It of tetragonal zirconia crystal at 2¸ ranging from 30° to 30.5° and a peak intensity I m of monoclinic zirconia crystal at 2¸ ranging from 28° to 28.5° measured by X-ray diffractometer using Cu-K± radiation, is less than or equal to 35 excluding 0. Further, a light-emitting element module includes the light-emitting element mounting substrate, and a light-emitting element mounted thereon.
Bibliography:Application Number: EP20140775875