Light-emitting device and illumination apparatus
A light-emitting device comprises a semiconductor light-emitting element that emits blue-violet or blue light and a fluorescent material that absorbs all or a part of the light emitted by the semiconductor light-emitting element and emits fluorescence of wavelengths different from that of the light,...
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| creator | SAKUMA KEN,KIMURA NAOKI,MASUKO LOICHIRO,HIROSAKI NAOTO |
| description | A light-emitting device comprises a semiconductor light-emitting element that emits blue-violet or blue light and a fluorescent material that absorbs all or a part of the light emitted by the semiconductor light-emitting element and emits fluorescence of wavelengths different from that of the light, wherein the fluorescent material comprises a mixture of a first fluorescent material that emits green or yellow-green light, a second fluorescent material that has a longer emission wavelength than that of the first fluorescent material and emits yellow-green, yellow, or yellow-red light, and a third fluorescent material that has a longer emission wavelength than the second fluorescent material and emits yellow-red or red light, and the first fluorescent material is a europium-activated P-SiAlON fluorescent material, the second fluorescent material is a europium-activated +--SiAlON fluorescent material, and the third fluorescent material is a nitride crystalline red fluorescent material of the general formula of (Ca,Eu)AlSiN 3 . |
| format | Patent |
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absorbs all or a part of the light emitted by the semiconductor light-emitting element and emits fluorescence of wavelengths different from that of the light, wherein the fluorescent material comprises a mixture of a first fluorescent material that emits green or yellow-green light, a second fluorescent material that has a longer emission wavelength than that of the first fluorescent material and emits yellow-green, yellow, or yellow-red light, and a third fluorescent material that has a longer emission wavelength than the second fluorescent material and emits yellow-red or red light, and the first fluorescent material is a europium-activated P-SiAlON fluorescent material, the second fluorescent material is a europium-activated +--SiAlON fluorescent material, and the third fluorescent material is a nitride crystalline red fluorescent material of the general formula of (Ca,Eu)AlSiN 3 .</description><language>eng</language><subject>ADHESIVES ; BASIC ELECTRIC ELEMENTS ; CHEMISTRY ; DYES ; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR ; ELECTRICITY ; MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE ; METALLURGY ; MISCELLANEOUS APPLICATIONS OF MATERIALS ; MISCELLANEOUS COMPOSITIONS ; NATURAL RESINS ; PAINTS ; POLISHES ; SEMICONDUCTOR 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that emits blue-violet or blue light and a fluorescent material that absorbs all or a part of the light emitted by the semiconductor light-emitting element and emits fluorescence of wavelengths different from that of the light, wherein the fluorescent material comprises a mixture of a first fluorescent material that emits green or yellow-green light, a second fluorescent material that has a longer emission wavelength than that of the first fluorescent material and emits yellow-green, yellow, or yellow-red light, and a third fluorescent material that has a longer emission wavelength than the second fluorescent material and emits yellow-red or red light, and the first fluorescent material is a europium-activated P-SiAlON fluorescent material, the second fluorescent material is a europium-activated +--SiAlON fluorescent material, and the third fluorescent material is a nitride crystalline red fluorescent material of the general formula of (Ca,Eu)AlSiN 3 .</description><subject>ADHESIVES</subject><subject>BASIC ELECTRIC ELEMENTS</subject><subject>CHEMISTRY</subject><subject>DYES</subject><subject>ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR</subject><subject>ELECTRICITY</subject><subject>MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE</subject><subject>METALLURGY</subject><subject>MISCELLANEOUS APPLICATIONS OF MATERIALS</subject><subject>MISCELLANEOUS COMPOSITIONS</subject><subject>NATURAL RESINS</subject><subject>PAINTS</subject><subject>POLISHES</subject><subject>SEMICONDUCTOR DEVICES</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2006</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZDDwyUzPKNFNzc0sKcnMS1dISS3LTE5VSMxLUcjMySnNzcxLLMnMz1NILChILEosKS3mYWBNS8wpTuWF0twM8m6uIc4euqkF-fGpxQWJyal5qSXxzn6GFhaGZkaWjsaEVQAA3Ecq6A</recordid><startdate>20061220</startdate><enddate>20061220</enddate><creator>SAKUMA KEN,KIMURA NAOKI,MASUKO LOICHIRO,HIROSAKI NAOTO</creator><scope>EVB</scope></search><sort><creationdate>20061220</creationdate><title>Light-emitting device and illumination apparatus</title><author>SAKUMA KEN,KIMURA NAOKI,MASUKO LOICHIRO,HIROSAKI NAOTO</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_CN1881629A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>2006</creationdate><topic>ADHESIVES</topic><topic>BASIC ELECTRIC ELEMENTS</topic><topic>CHEMISTRY</topic><topic>DYES</topic><topic>ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR</topic><topic>ELECTRICITY</topic><topic>MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE</topic><topic>METALLURGY</topic><topic>MISCELLANEOUS APPLICATIONS OF MATERIALS</topic><topic>MISCELLANEOUS COMPOSITIONS</topic><topic>NATURAL RESINS</topic><topic>PAINTS</topic><topic>POLISHES</topic><topic>SEMICONDUCTOR DEVICES</topic><toplevel>online_resources</toplevel><creatorcontrib>SAKUMA KEN,KIMURA NAOKI,MASUKO LOICHIRO,HIROSAKI NAOTO</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>SAKUMA KEN,KIMURA NAOKI,MASUKO LOICHIRO,HIROSAKI NAOTO</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Light-emitting device and illumination apparatus</title><date>2006-12-20</date><risdate>2006</risdate><abstract>A light-emitting device comprises a semiconductor light-emitting element that emits blue-violet or blue light and a fluorescent material that absorbs all or a part of the light emitted by the semiconductor light-emitting element and emits fluorescence of wavelengths different from that of the light, wherein the fluorescent material comprises a mixture of a first fluorescent material that emits green or yellow-green light, a second fluorescent material that has a longer emission wavelength than that of the first fluorescent material and emits yellow-green, yellow, or yellow-red light, and a third fluorescent material that has a longer emission wavelength than the second fluorescent material and emits yellow-red or red light, and the first fluorescent material is a europium-activated P-SiAlON fluorescent material, the second fluorescent material is a europium-activated +--SiAlON fluorescent material, and the third fluorescent material is a nitride crystalline red fluorescent material of the general formula of (Ca,Eu)AlSiN 3 .</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | ADHESIVES BASIC ELECTRIC ELEMENTS CHEMISTRY DYES ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR ELECTRICITY MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS PAINTS POLISHES SEMICONDUCTOR DEVICES |
| title | Light-emitting device and illumination apparatus |
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