| abstract |
(57) [Summary] [Object] To provide a mixed blue light-emitting phosphor having improved brightness and brightness saturation characteristics. [Constitution] Silver-aluminum co-activated zinc sulfide phosphor Zn S: Ag, Al and terbium activated yttrium aluminum gallate phosphor Y 3 (Al, Ga) 5 O 12 : T b, terbium activated yttrium silicate phosphor Y 2 Si O 5 : Tb and terbium activated lanthanum phosphide phosphor L Disclosed is a mixed blue light-emitting phosphor obtained by mixing at least one phosphor selected from the group consisting of aOCl: Tb so as to be 20% by weight or less based on the total amount of the mixed phosphor. As a result, the brightness and saturation characteristics are greatly improved. |