Patent ID: 9617471
Date: 2017-04-11
CPC Classifications: C09K,H01L

Claim:
1. A phosphor comprising an inorganic compound in which an inorganic crystal including at least an A element, a D element, and an X element (where A is one or two or more elements selected from the group consisting of Mg, Ca, Sr, and Ba; D is one or two or more elements selected from the group consisting of Si, Ge, Sn, Ti, Zr, and Hf; and X is one or two or more elements selected from the group consisting of O, N, and F), further, when necessary, an E element (where E is one or two or more elements selected from the group consisting of B, Al, Ga, In, Sc, Y, and La), and comprising any of (1) a crystal represented by A 1 (D, E) 7 X 10 ; (2) a Sr 1 Si 7 N 10 crystal or a crystal having a same crystal structure as the Sr 1 Si 7 N 10 crystal; or (3) a Ba 1 Si 7 N 10 crystal or a crystal having a same crystal structure as the Ba 1 Si 7 N 10 crystal, and comprising a Li element and an M element (where M is one or two or more elements selected from the group consisting of Mn, Ce, Pr, Nd, Sm, Eu, Tb, Dy, and Yb,) wherein the inorganic crystal is represented by a composition formula L parameters c, d, e, f, g, and h satisfy all conditions wherein the inorganic compound emits white color fluorescence upon irradiation by an excitation source.