Patent ID: 7394091
Filing Date: 2008-07-01
Classification: C09K,H05B,Y10S

Abstract:
1. An electron-excited nano-crystal phosphor made up of at least three parts of nano-sized composite nano-particles comprising: a core part of nano-crystal phosphor particle doped with an activator, the phosphor particle being selected from the group consisting of ZnS:Mn. ZnS:Cl, ZnS:Cu, Al, CaS:Eu, CaS:Ce, CaS:Mn, CaS:Cu, CaS:Sb, CaS:Eu, Ce, CaS:Sm, CaS:Pb, CaS:Gd, CaS:Tb, CaS:Dy, CaS:Ho, CaS:Er, CaS:Tm, CaS:Yb, MgS:Eu, MgS:Ce, MgS:Mn, SrS:Eu, SrS:Ce, SrS:Mn, BaS:Eu, BaS:Ce and BaS:Mn; a surface-modifying part coating the surface of the core part and having a bonding part for bonding the periphery of the core part to a bond defect of the nano-crystal phosphor particle; and an insulating shell part coating the surface of the surface-modifying part, the insulating shell part being formed of, as a substrate, a surface-modifying agent forming a glass state on the surface of the surface-modifying part, wherein the surface-modifying agent on the surface-modifying part having a covalent bond part forming a covalent bond with the bond defect of said composite nano-particles is an organometallic compound having SH group, —NH3 group at its terminal and the insulating shell part comprises a transparent material.