Granted Patent B2

US 7,300,605 · App. 11/089,351 · Granted Nov 27, 2007

Abstract

Claims (10)

1. A phosphor having a magnetoplumbite-type crystal structure and comprising at least one element selected from B, Si, P, Ge, Ti, V, Ni, Ta, Nb, Mo, W, Yb, Tm and Bi, the phosphor being a blue phosphor further comprising Eu 2+ .

2. A phosphor having a magnetoplumbite-type crystal structure and comprising at least one element selected from B, Si, P, Ge, Ti, V, Ni, Ta, Nb, Mo, W, Yb, Tm and Bi, the phosphor being shown by the formula (La 1−x Tb x )(Mg 1−a Mn a )(Al 11−c V c )O 19 , wherein x is from 0 to 0.5, a is from 0 to 0.1, and c is from 0.0001 to 0.01.

3. A phosphor having a magnetoplumbite-type crystal structure and comprising at least one element selected from B, Si, P, Ge, Ti, V, Ni, Ta, Nb, Mo, W, Yb, Tm and Bi, the phosphor being shown by the formula (La 1−x−y Tb x Yb y )(Mg 1−a Mn a )Al 11 O 19 , wherein x is from 0 to 0.5, y is from 0.0001 to 0.1, and ais from 0 to 0.1.

4. A phosphor having a magnetoplumbite-type crystal structure and comprising at least one element selected from B, Si, P, Ge, Ti, V, Ni, Ta, Nb, Mo, W, Yb, Tm and Bi, the phosphor being shown by the formula (La 1−x−y Tb x Sr y )(Mg 1−a−b−y Mn a Zn b )(Al 11−c+y V c ) O 19 , wherein x is from 0 to 0.5, y is from 0 to 0.1, a is from 0 to 0.1, b is from 0 to 0.1, and c is from 0.0001 to 0.01.

5. A phosphor having a magnetoplumbite-type crystal structure and comprising at least one element selected from B, Si, P, Ge, Ti, V, Ni, Ta, Nb, Mo, W, Yb, Tm and Bi, the phosphor being shown by the formula (La 1−x−y−z Tb x Yb y Gd z )(Mg 1−a Mn a )Al 11 O 19 , wherein x is from 0 to 0.5, y is from 0.0001 to 0.1, z is from 0.00001 to 0.1, and a is from 0 to 0.1.

6. A phosphor having a magnetoplumbite-type crystal structure and comprising at least one element selected from B, Si, P, Ge, Ti, V, Ni, Ta, Nb, Mo, W, Yb, Tm and Bi, the phosphor being shown by the formula (La 1−x−y−z Tb x Yb y Gd z )(Mg 1−a−b Mn a Ti b )Al 11 O 19 , wherein x is from 0 to 0.5, y is from 0.0001 to 0.1, z is from 0.00001 to 0.1, a is from 0 to 0.1, and b is from 0.00001 to 0.03.

7. A phosphor having a magnetoplumbite-type crystal structure and comprising at least one element selected from B, Si, P, Ge, Ti, V, Ni, Ta, Nb, Mo, W, Yb, Tm and Bi, the phosphor being shown by the formula (La 1−x−y Eu x Tm y )Mg 1−x Al 11+x O 19 , wherein x is from 0.001 to 0.15 and y is from 0.0001 to 0.1.

8. A phosphor having a magnetoplumbite-type crystal structure and showing by the formula (La 1−x−y−z Tb x Yb y Ln z )(Mg 1−a−b M a M′ b )Al 11 O 19+d , wherein x is from 0 to 0.5, y is from 0.0001 to 0.1, z is from 0.00001 to 0.1, a is from 0 to 0.1, b is from 0.00001 to 0.03, d is from —1 to 1, Ln is a rare-earth element or an element that can form a cation with an ionic radius of 1 to 1.4 angstroms, and M and M′ are each an element that can form a cation with an ionic radius of 0.7 to 1 angstrom, which is typified by a 3d transition metal.

9. A display device using a green phosphor as set forth in claim 8 .

10. A gas discharge device using a green phosphor as set forth in claim 8 .

Assignments (8)