Patent ID: 9202991
Filing Date: 2015-12-01
Classification: C09K,H01L

Abstract:
1. An inorganic nitride-based fluorescent material, comprising: an inorganic fluorescent host material represented by the following formula (I): wherein, M is at least one metal selected from the group consisting of metals of IIA and IIIA, x being from 1.0 to 3.0, y being from 0.7 to 6.0, z being from 1.0 to 9.0, At being an activator; and a surface coating material of at least one metal hydroxide or metal carbonate, and the metal of the metal hydroxide or the metal carbonate is selected from the group consisting of Mg, Ca, Sr, Ba, V, Cr, Mn, Fe, Co, Ni, Cu, La, Ga, In, Sn, Sb and Bi.