LIGHT-EMITTING DEVICE, WAVELENGTH CONVERSION MEMBER, PHOSPHOR COMPOSITION AND PHOSPHOR MIXTURE

LIGHT-EMITTING DEVICE, WAVELENGTH CONVERSION MEMBER, PHOSPHOR COMPOSITION AND PHOSPHOR MIXTURE

Provided is a light-emitting device having good binning characteristics with suppressed changes in color derived from shifts in excitation wavelength. The present invention achieves the above object by way of a light-emitting device that comprises a blue semiconductor light-emitting element, and a w...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: YOSHIDA HISASHI, KURUSHIMA TOMOYUKI, SOMA MINORU, KATSUMOTO TADAHIRO
Format: Patent
Sprache:eng
Schlagworte:
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
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Beschreibung
Zusammenfassung:Provided is a light-emitting device having good binning characteristics with suppressed changes in color derived from shifts in excitation wavelength. The present invention achieves the above object by way of a light-emitting device that comprises a blue semiconductor light-emitting element, and a wavelength conversion member, wherein the wavelength conversion member comprises: a phosphor Y represented by formula (Y1) below and having a peak wavelength of 540 nm or more and 570 nm or less in an emission wavelength spectrum when excited at 450 nm, (Y,Ce,Tb,Lu)x(Ga,Sc,Al)yOz  (Y1) (x=3, 4.5 y 5.5, 10.85 z 13.4); and a phosphor G represented by formula (G1) below and having a peak wavelength of 520 nm or more and 540 nm or less in an emission wavelength spectrum when excited at 450 nm. (Y,Ce,Tb,Lu)x(Ga,Sc,Al)yOz  (G1) (x=3, 4.5 y 5.5, 10.8 z 13.4)