Title:
FLUORESCENT SUBSTANCE, OPTICAL DEVICE AND DISPLAY DEVICE
Document Type and Number:
Japanese Patent JP2007056235
Kind Code:
A
Abstract:
To provide a fluorescent substance which allows the selection of an irradiating light for excitation for improving brightness while maintaining color purity.
The fluorescent substance has a composition represented by (Sr(1-x-y)CaxBay)(Ga(1-m-n)AlmInn)aS4:Eu, wherein Eu concentration is made to be 1 mol% to 9 mol%, 0≤x≤1, 0≤y≤1 and x+y≤1, 0≤m≤1, 0≤n≤1 and m+n≤1, and a main wave length band in excitation is selected from either a first wave length band with a reference wave length or less or a second wave length band with a reference wave length or over depending or the value of "a".
Inventors:
IGARASHI TAKAHIRO
KUSUKI TSUNEO
KOBORI ISAMU
ONO KATSUTOSHI
KUSUKI TSUNEO
KOBORI ISAMU
ONO KATSUTOSHI
Application Number:
JP2005360795A
Publication Date:
March 08, 2007
Filing Date:
December 14, 2005
Export Citation:
Assignee:
SONY CORP
International Classes:
C09K11/62; C09K11/08; C09K11/64; H01L51/50; H05B33/12
Attorney, Agent or Firm:
Yoshitsuno Kakuda
Hitoshi Ito
Hitoshi Ito
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