WAVELENGTH CONVERTING MEMBER, MAKING METHOD, AND LIGHT-EMITTING DEVICE

PURPOSE: A wavelength converting component, a manufacturing method thereof, and a light emitting device manufacture the wavelength converting component having an added arbitrary activator at low costs by using a transparent ceramic substrate. CONSTITUTION: An activator is coated on the surface of a...

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Bibliographic Details
Main Authors WATAYA KAZUHIRO, TSUMORI TOSHIHIRO
Format Patent
LanguageEnglish
Korean
Published 08.10.2013
Subjects
BASIC ELECTRIC ELEMENTS
ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
SEMICONDUCTOR DEVICES
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Summary:PURPOSE: A wavelength converting component, a manufacturing method thereof, and a light emitting device manufacture the wavelength converting component having an added arbitrary activator at low costs by using a transparent ceramic substrate. CONSTITUTION: An activator is coated on the surface of a polycrystalline transparent ceramic substrate. The activator-coated ceramic substrate is fired to diffuse the activator from the surface to the ceramic substrate. The polycrystalline transparent ceramic substrate has the composition of Y3Al5O12, Lu3Al5O12, (Y,Lu)3Al5O12, (Y,Gd)3Al5O12 or Al2O3. The activator is an oxide of cerium, europium or terbium. The activator is distributed in a higher concentration near grain boundaries than at the center of grains. [Reference numerals] (P1) Surface white area; (P2) Grey area
Bibliography:Application Number: KR20130032100