Patent ID: 6193908
Filing Date: 2001-02-27
Classification: B01J,B24B,B82Y,C01B,C01G,C01P,C09G,C09K,G21K,H01G,H01J,H01L,H05B,Y10T

Abstract:
A powder batch comprising electroluminescent phosphor particles selected from the group consisting of M.sup.2 Ga.sub.2 S.sub.4, wherein M.sup.2 is selected from the group consisting of Ca, Sr and combinations thereof, ZnGa.sub.2 O.sub.4, M.sup.3 Ga.sub.2 O.sub.4, wherein M.sup.3 is selected from the group consisting of Ca and Sr, Ga.sub.2 O.sub.3, Ca.sub.3 Ga.sub.2 O.sub.6 and Zn.sub.2 (Ge,Si)O.sub.4, and wherein said particles have a weight average particles size of from about 0.1 .mu.m to about 10 .mu.m and have a substantially spherical morphology, wherein at least about 80 weight percent of said particles are not larger than about two times said average particle size.