Patent ID: 7833436

Claim:
A multinary oxynitride phosphor comprising a crystal phase represented by general formula [I]: M1 x Ba y M2 z L u O v N w [I] where: M 1 represents at least one activation element selected from the group consisting of Cr, Mn, Fe, Ce, Pr, Nd, Sm, Eu, Tb, Dy, Ho, Er, Tm and Yb, and includes at least Eu or Ce; M 2 represents at least one divalent metal element selected from the group consisting of Sr, Ca, Mg and Zn; L represents a metal element, including Si, selected from metal elements belonging to the fourth group or the fourteenth group of the periodic table; and x, y, z, u, v and w are numeric values in the following ranges: 0.03 ≦x≦ 0.9; 0.9 ≦y≦ 2.95; x+y+z= 3; u=6; v=12; and w=2.