Patent ID: 7303697
Filing Date: 2007-12-04
Classification: C09K,Y02P,Y10S,Y10T

Abstract:
1. A phosphor comprising phosphor particles that are covered with an organic compound bearing one or more functional groups at a terminal or side chain, wherein said one or more functional groups are functional groups other than a thiol, mercapto, mercaptan or sulfhydryl functional group, said particles being represented by the general formula wherein L is at least one metallic element selected from the group consisting of Zn, Mg, Ca, Sr and Ba; M is at least one metallic element selected from the group consisting of B, Al and Ga; N is Si or Ge; O is oxygen; Y is at least one activating agent selected from the group consisting of Mn 2+ , Eu 2+ , Cu 2+ , Yb 2+ , Cr 3+ , Ce 3+ , Pr 3+ , Nd 3+ , Sm 3+ , Eu 3+ , Tb 3+ , Dy 3+ , Er 3+ , Tm 3+ and Mn 4+ ; and a, b, c and d are each a value satisfying the relationships 0<a≦2, 0b≦2, 0≦c≦2 and 2a+3b+4c=2d.