Title:
Oxynitride fluorescent substance powder and a manufacturing method for the same
Document Type and Number:
Japanese Patent JP6015851
Kind Code:
B2
Abstract:
Provided is an oxynitride phosphor powder which has a fluorescence peak wavelength of 610 to 625 nm and also has higher external quantum efficiency than the conventional one. The oxynitride phosphor powder according to the present invention is characterized by comprising an ±-type SiAlON and aluminum nitride, represented by the compositional formula: Ca x1 Eu x2 Si 12-(y+z) Al (y+z) O z N 16-z (wherein x1, x2, y, z fulfill the following formulae: 1.60 ¤ x1+x2 ¤ 2.90, 0.18 ¤ x2/x1 ¤ 0.70, 4.0 ¤ y ¤ 6.5, 0.0 ¤ z ¤ 1.0). It is preferable that the powder additionally contains Li in an amount of 50 to 10000 ppm. It is also preferable that the content of the aluminum nitride is from more than 0 mass% to less than 33 mass%.
Inventors:
Mao Sumino
Kazuki Iwashita
Takuma Sakai
Masataka Fujinaga
Shinsuke Harita
Kazuki Iwashita
Takuma Sakai
Masataka Fujinaga
Shinsuke Harita
Application Number:
JP2015508808A
Publication Date:
October 26, 2016
Filing Date:
March 28, 2014
Export Citation:
Assignee:
Ube Industries,Ltd.
International Classes:
C09K11/64; C09K11/08
Domestic Patent References:
| JP2005307012A | 2005-11-04 | |||
| JP2012224757A | 2012-11-15 | |||
| JP2002363554A | 2002-12-18 | |||
| JP2005307012A | 2005-11-04 | |||
| JP2012224757A | 2012-11-15 | |||
| JP2002363554A | 2002-12-18 |
Foreign References:
| WO2012023414A1 | 2012-02-23 |
Attorney, Agent or Firm:
Atsushi Aoki
Takashi Ishida
Tetsuji Koga
Yoshihiro Kobayashi
Atsushi Ebiya
Takashi Ishida
Tetsuji Koga
Yoshihiro Kobayashi
Atsushi Ebiya