Patent ID: 6180029
Filing Date: 2001-01-30
Classification: B01J,B24B,B42D,B82Y,C01B,C01G,C01P,C09D,C09G,C09K,G21K,H01G,H01J,H01L,H05B,Y10S,Y10T

Abstract:
A powder batch comprising oxygen-containing phosphor particles, wherein said phosphor particles have a weight average particle size of from about 0.3 .mu.m to about 5 .mu.m and a particle size distribution wherein at least about 90 weight percent of said particles are not larger than twice said average particle size wherein said phosphor particles are substantially spherical and wherein said phosphor particles comprise a silicate host-material selected from the group consisting of zinc silicate, calcium silicate, barium silicate, gadolinium silicate and yttrium silicate.