Patent ID: 7811678
Filing Date: 2010-10-12
Classification: C09K,C23C,H05B,Y10S,Y10T

Abstract:
1. An improved phosphor structure for an electroluminescent display, said structure comprising a phosphor laminate of; a blue light emitting phosphor thin film layer; a fluoride containing layer provided directly adjacent and in contact with said phosphor thin film layer, wherein said fluoride containing layer is provided on the top and/or bottom of said phosphor thin film layer and fluorine from said fluoride containing layer partially infused into said phosphor thin film layer, without adverse effects on luminosity of the phosphor, the fluoride layer together with the phosphor layer forming the phosphor laminate; wherein said blue light emitting phosphor thin film layer is selected from the group consisting of a rare earth metal activated barium thioaluminate and a rare earth metal activated magnesium barium thioaluminate.