Metal silicate halide phosphors and LED lighting devices using the same
First Claim
Patent Images
1. ) A phosphor having a formula selected from:
- a) (M1xM21-x)2LiSiO4X;
A;
b) (M1xM21-x)5SiO4X6;
A;
c) (M1xM21-x)3SiO4X2;
A;
d) (M1xM21-x)5(SiO4)2X2;
A;
e) (M1xM21-x)5Si2O7X4;
A;
f) (M1xM21-x)10(Si2O7)3X2;
A;
g) (M1xM21-x)4Si2O7X2;
A;
h) M16M24(Si2O7)3X2;
A;
i) (M1xM21-x)7Si2O7X8;
A;
j) (M1xM21-x)4Si3O8X2;
A;
k) (M1xM21-x)4Si3O8X4;
A;
l) (M1xM21-x)8Si4O12X8;
A;
m) (M1xM21-x)5Si2O6X6;
A;
n) (M1xM21-x)15Si6O18X8;
A;
o) (M1xM21-x)5Si4O10X5;
A;
p) (M1xM21-x)10(SiO4)3(SO4)3X2;
A;
q) (M1xM21-x)4(SiO4)(SO4)X2;
A; and
r) (M1xM21-x)8Mg(SiO4)4X2;
A, wherein;
M1 and M2 are each independently at least one metal ion selected from the group consisting of Mg2+, Ca2+, Sr2+, Ba2+, Zn2+ and Cd2+;
x is a value from about 0.001 to about 1;
X is at least one halide ion in ionic form;
A is at least one activator ion selected from the group consisting of Eu2+, Yb2+, Mn2+, Bi3+, Pb2+, Ce3+, Nd3+, Pr3+, Sm3+, Eu3+, Gd3+, Tb3+, Dy3+, Ho3+, Er3+, Tm3+ and Yb3+;
if the phosphor has the formula (M1xM21-x)2LiSiO4X;
A, and M1 is Sr2+, x is 1 and X is fluoride or M2 is Sr2+, x is 0 and X is fluoride, then A is not Eu2+; and
if the phosphor has the formula (M1xM21-x)3SiO4X2;
A, and M1 is Ca2+, x is 1 and X is chloride or M2 is Ca2+, x is 0 and X is chloride, then A is not Eu2+; and
if the phosphor has the formula (M1xM21-x)8Mg(SiO4)4X2;
A, and M1 is Ca2+, x is 1 and X is chloride or M2 is Ca2+, x is 0 and X is chloride, then A is not Eu2+.
7 Assignments
0 Petitions
Accused Products
Abstract
The present invention relates to certain metal silicate halide (halosilicate) phosphors, the phosphors with an oxide coating, methods of making the phosphors, and light emitting diode- (LED-) based lighting devices modified with the phosphors.
-
Citations
30 Claims
-
1. ) A phosphor having a formula selected from:
-
a) (M1xM21-x)2LiSiO4X;
A;
b) (M1xM21-x)5SiO4X6;
A;
c) (M1xM21-x)3SiO4X2;
A;
d) (M1xM21-x)5(SiO4)2X2;
A;
e) (M1xM21-x)5Si2O7X4;
A;
f) (M1xM21-x)10(Si2O7)3X2;
A;
g) (M1xM21-x)4Si2O7X2;
A;
h) M16M24(Si2O7)3X2;
A;
i) (M1xM21-x)7Si2O7X8;
A;
j) (M1xM21-x)4Si3O8X2;
A;
k) (M1xM21-x)4Si3O8X4;
A;
l) (M1xM21-x)8Si4O12X8;
A;
m) (M1xM21-x)5Si2O6X6;
A;
n) (M1xM21-x)15Si6O18X8;
A;
o) (M1xM21-x)5Si4O10X5;
A;
p) (M1xM21-x)10(SiO4)3(SO4)3X2;
A;
q) (M1xM21-x)4(SiO4)(SO4)X2;
A; and
r) (M1xM21-x)8Mg(SiO4)4X2;
A,wherein;
M1 and M2 are each independently at least one metal ion selected from the group consisting of Mg2+, Ca2+, Sr2+, Ba2+, Zn2+ and Cd2+;
x is a value from about 0.001 to about 1;
X is at least one halide ion in ionic form;
A is at least one activator ion selected from the group consisting of Eu2+, Yb2+, Mn2+, Bi3+, Pb2+, Ce3+, Nd3+, Pr3+, Sm3+, Eu3+, Gd3+, Tb3+, Dy3+, Ho3+, Er3+, Tm3+ and Yb3+;
if the phosphor has the formula (M1xM21-x)2LiSiO4X;
A, and M1 is Sr2+, x is 1 and X is fluoride or M2 is Sr2+, x is 0 and X is fluoride, then A is not Eu2+; and
if the phosphor has the formula (M1xM21-x)3SiO4X2;
A, and M1 is Ca2+, x is 1 and X is chloride or M2 is Ca2+, x is 0 and X is chloride, then A is not Eu2+; and
if the phosphor has the formula (M1xM21-x)8Mg(SiO4)4X2;
A, and M1 is Ca2+, x is 1 and X is chloride or M2 is Ca2+, x is 0 and X is chloride, then A is not Eu2+. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
-
- 17. ) The lighting device of 16, wherein the LED comprises a light emitting layer containing indium and at least one quantum well structure.
Specification