METHOD FOR MANUFACTURING RED PHOSPHOR

Provided is a process for producing a red phosphor, said process achieving enhanced productivity. Also provided are: a red phosphor having excellent luminescence characteristics; and a white light source, a lighting system, and a liquid crystal display device, using the red phosphor. This process co...

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Bibliographische Detailangaben
Hauptverfasser:	KUSUNOKI, TSUNEO, IZAWA, TAKAMASA, KANNO, MASAKI
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ADHESIVES BASIC ELECTRIC ELEMENTS 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 MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS NON-LINEAR OPTICS OPTICAL ANALOGUE/DIGITAL CONVERTERS OPTICAL LOGIC ELEMENTS OPTICS PAINTS PHYSICS POLISHES SEMICONDUCTOR DEVICES TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF
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Beschreibung
Zusammenfassung:	Provided is a process for producing a red phosphor, said process achieving enhanced productivity. Also provided are: a red phosphor having excellent luminescence characteristics; and a white light source, a lighting system, and a liquid crystal display device, using the red phosphor. This process comprises: mixing an A-containing compound, a nitrogen-free europium source, a silicon-containing compound, an aluminum-containing compound and a carbon-containing reducing agent so as to form a mixture wherein the atomic ratio among A, europium (Eu), silicon (Si), aluminum (Al) and carbon (C) is a value represented by composition formula (1); firing the mixture; and pulverizing the fired mixture. (A m-x Eu x )Al y (Si 1-z C z ) 9 O n N [12+y-2(n-m)/3] (1) [wherein A is at least one element selected from among magnesium (Mg), calcium (Ca), strontium (Sr) and barium (Ba), and m, x, z and n satisfy the relationships: 3 < m < 5, 0 < x < 1, 0 ¦ y < 2, 0 < z < 1, and 0 < n < 10].