Patent ID: 6123872
Filing Date: 2000-09-26
Classification: C03C,C09K

Abstract:
(SiO.sub.2 + B.sub.2 O.sub.3 = 20 to 60%) ZnO 30 to 75% Tb.sub.2 O.sub.3 0 to 7% MnO 0 to 2% (Tb.sub.2 O.sub.3 + MnO = 0.01 to 7%) R.sub.2 O 0 to 25% (R: at least one atom selected from Li, Na, K and CS) R'O 0 to 25% (R': at least one atom selected from Mg, Ca, Sr and Ba) Al.sub.2 O.sub.3 0 to 15% Ga.sub.2 O.sub.3 0 to 15% GeO.sub.2 0 to 20% ZrO.sub.2 0 to 5% Ln.sub.2 O.sub.3 0 to 8% (Ln: at least one atom selected from Y, La, Gd, Yb, Lu, Sm, Dy, Tm and Pr) and Sb.sub.2 O.sub.3 0 to 0.5%.