COATED PHOSPHOR AND METHOD FOR PRODUCING COATED PHOSPHOR

The object of the present invention is to provide a coated phosphor in which the release of sulfur-based gas in high-temperature, high-humidity conditions can be suppressed. A coated phosphor (1) has a structure in which a sulfide phosphor (2) is coated with a silicon dioxide film (4) containing a m...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	DAIMON , MASAHIDE, YAMASUGE , TAKEHIRO, KUSUNOKI , TSUNEO
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ADHESIVES BASIC ELECTRIC ELEMENTS BLASTING CHEMISTRY DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING DYES ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR ELECTRICITY FREQUENCY-CHANGING HEATING LIGHT SOURCES NOT OTHERWISE PROVIDED FOR LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATINGELEMENTS LIGHTING MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE MECHANICAL ENGINEERING METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE NON-LINEAR OPTICS OPTICAL ANALOGUE/DIGITAL CONVERTERS OPTICAL LOGIC ELEMENTS OPTICS PAINTS PHYSICS POLISHES SEMICONDUCTOR DEVICES TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF WEAPONS
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Beschreibung
Zusammenfassung:	The object of the present invention is to provide a coated phosphor in which the release of sulfur-based gas in high-temperature, high-humidity conditions can be suppressed. A coated phosphor (1) has a structure in which a sulfide phosphor (2) is coated with a silicon dioxide film (4) containing a metal oxide powder (3). The coated phosphor (1) is obtained by mixing the sulfide phosphor (2), an alkoxysilane, the metal oxide powder (3) and a catalyst are mixed in a solvent, and coating the sulfide phosphor (2) with the silicon dioxide film (4) containing the metal oxide powder (3) and formed by alkoxysilane.