White light illumination system with narrow band green phosphor and multiple-wavelength excitation
First Claim
1. A color display comprising:
- a display panel; and
a white light illumination system;
wherein the white light illumination system comprises;
a phosphor package;
a first radiation source for providing co-excitation radiation to the phosphor package, the source emitting in wavelengths ranging from about 250 nm to about 410 nm;
a second radiation source for providing co-excitation radiation to the phosphor package, the source emitting in wavelengths ranging from about 410 nm to about 540 nm; and
wherein the phosphor package is configured to emit photoluminescence in wavelengths ranging from about 440 nm to about 700 nm upon co-excitation from the first and second radiation sources, and wherein the phosphor package comprises at least one narrow band green phosphor with a photoluminescence peak with a full width at half maximum of less than 60 nm, and wherein the narrow band green phosphor is configured to emit photoluminescence in wavelengths ranging from about 500 nm to about 550 nm.
2 Assignments
0 Petitions
Accused Products
Abstract
A white light illumination system may comprise: a phosphor package; a first radiation source for providing co-excitation radiation to the phosphor package, the source emitting in wavelengths ranging from about 250 nm to about 410 nm; and a second radiation source for providing co-excitation radiation to the phosphor package, the source emitting in wavelengths ranging from about 410 nm to about 540 nm; wherein the phosphor package is configured to emit photoluminescence in wavelengths ranging from about 440 nm to about 700 nm upon co-excitation from the first and second radiation sources, and wherein the phosphor package comprises at least one narrow band green phosphor with a photoluminescence peak with a full width at half maximum of less than 60 nm, and wherein the narrow band green phosphor is configured to emit photoluminescence in wavelengths ranging from about 500 nm to about 550 nm.
-
Citations
25 Claims
-
1. A color display comprising:
-
a display panel; and a white light illumination system; wherein the white light illumination system comprises; a phosphor package; a first radiation source for providing co-excitation radiation to the phosphor package, the source emitting in wavelengths ranging from about 250 nm to about 410 nm; a second radiation source for providing co-excitation radiation to the phosphor package, the source emitting in wavelengths ranging from about 410 nm to about 540 nm; and wherein the phosphor package is configured to emit photoluminescence in wavelengths ranging from about 440 nm to about 700 nm upon co-excitation from the first and second radiation sources, and wherein the phosphor package comprises at least one narrow band green phosphor with a photoluminescence peak with a full width at half maximum of less than 60 nm, and wherein the narrow band green phosphor is configured to emit photoluminescence in wavelengths ranging from about 500 nm to about 550 nm. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
-
-
25. A photoluminescence color display comprising:
-
a display panel comprising a plurality of red, green and blue pixel areas; an excitation source operable to generate excitation radiation for operating the display, said excitation source comprising; a first radiation source emitting in wavelengths ranging from about 250 nm to about 410 nm; a second radiation source emitting in wavelengths ranging from about 410 nm to about 540 nm; a photoluminescence color-elements plate comprising at least one of;
a first photoluminescence material corresponding to red pixel areas of the display that is operable to emit red light in response to said excitation radiation;
a second photoluminescence material corresponding to green pixel areas of the display that is operable to emit green light in response to said excitation radiation; and
a third photoluminescence material corresponding to blue pixel areas of the display that is operable to emit blue light in response to said excitation radiation; anda color filter plate located on a side of the display panel, wherein the color filter plate comprises at least one of;
first filter areas corresponding to red pixel areas of the display that are operable to allow the passage of red light;second filter areas corresponding to green pixel areas of the display that are operable to allow the passage of green light; and
third filter areas corresponding to blue pixel areas of the display that are operable to allow the passage of blue light;wherein the second photoluminescence material comprises at least one narrow band green phosphor with a photoluminescence peak with a full width at half maximum of less than 60 nm, and wherein the narrow band green phosphor is configured to emit photoluminescence in wavelengths ranging from about 500 nm to about 550 nm.
-
Specification