Patent ID: 8274210

Claim:
A halosilicate phosphor represented by Formula 1: p(Ca 1-x M 1 x )O.qM 2 O 2 .rM 3 A 2 :sM 4 Formula 1 wherein M 1 comprises at least one selected from a group consisting of Sr 2+ and Ba 2+ ; M 2 comprises at least one selected from a group consisting of Si 4+ and Ge 4+ ; M 3 comprises at least one selected from a group consisting of Ca 2+ , Sr 2+ and Ba 2+ ; M 4 comprises at least one selected from a group consisting of Eu 2+ , Mn 2+ , Sb 2+ , Ce 3+ , Pr 3+ , Nd 3+ , Sm 3+ , Tb 3+ , Dy 3+ , Ho 3+ , Er 3+ , Yb 3+ and Bi 3+ ; and A comprises at least one selected from a group consisting of F − , Cl − , Br − and I − , wherein 0≦x<1, 1.8≦p≦2.2, 0.8≦q≦1.2, 1<r/q<3 and 0<s<0.5, and wherein the halosilicate phosphor has a full width at half maximum of about 125 nm to about 220 nm in an emission spectra.