公开(公告)号：JP2003096446A

公开(公告)日：2003-04-03

申请号：JP2001288156

申请日：2001-09-21

Applicant: NAT INST FOR MATERIALS SCIENCE

Inventor： MITOMO MAMORU ,  ENDO TADASHI ,  UEDA KYOTA

IPC: C09K11/79

Abstract: PROBLEM TO BE SOLVED: To provide a cerium ion activated-lanthanum silicon nitride fluorescent substance satisfying chromaticity of blue color, excellent in thermal stability, mechanical properties and chemical stability and usable in severe circumstances, applicable to VFD (Vacuum Fluorescent Display) and FED (Field Emission Display). SOLUTION: This fluorescent substance is expressed by general formula La1-x Si3 N5 :xCe (x is a amount of activation, 0; x; 1), a part of the lanthanum ion is activated by substituting and forming a solid solution of the cerium ion.

公开(公告)号：JP2002363554A

公开(公告)日：2002-12-18

申请号：JP2001171831

申请日：2001-06-07

Applicant: NAT INST FOR MATERIALS SCIENCE

Inventor： MITOMO MAMORU ,  ENDO TADASHI ,  UEDA KYOTA

IPC: C04B35/599 ,  C09K11/64 ,  C09K11/80

Abstract: PROBLEM TO BE SOLVED: To provide an acid nitride phosphor activated with a rare earth element, which can realize a white LED with a higher luminance, using a blue LED as the light source. SOLUTION: This phosphor is represented by the general formula: Mex Si12-(m+n) Al(m+n) On N16-n :Re1y Re2z , wherein a part or the whole of the metal(s) Me (Me is Ca, Mg, Y, or one or more of lanthanide metals except La and Ce) capable of forming a solid solution with α-sialon is substituted by lanthanide metal(s) Re1 (Re1 is one or more of Ce, Pr, Eu, Tb, Yb, and Er) serving as a luminescent center, or two kinds of lanthanide metals Re1 and a coactivator comprising Re2 (Re2 is Dy).

公开(公告)号：DE112005000396T5

公开(公告)日：2007-02-08

申请号：DE112005000396

申请日：2005-02-15

Applicant: NAT INST FOR MATERIALS SCIENCE

Inventor： HIROSAKI NAOTO ,  SAKUMA KEN ,  UEDA KYOTA ,  YAMAMOTO HAJIME

IPC: F21S8/04 ,  C09K11/08 ,  C09K11/64 ,  C09K11/77 ,  F21S2/00 ,  F21V5/04 ,  F21Y101/02 ,  H01L33/32 ,  H01L33/50 ,  H01L33/54 ,  H01L33/56 ,  H01L33/60 ,  H01L33/62

Abstract: A bullet type light emitting diode lamp or a chip-type light emitting diode lamp includes a semiconductor light emitting element, and a plurality of fluorescent materials that absorb part or whole of light emitted from the semiconductor light emitting element, and emit fluorescence at a wavelength different from that of the absorbed light. The fluorescent materials include a phosphor of a CaAlSiN3 crystalline phase.