Films with narrow band emission phosphor materials
AssigneeEdison Innovations, LLC
InventorsMark D. Doherty, Yangang Liang, Jie Jerry Liu, Samuel Joseph Camardello, James Edward Murphy
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Abstract
A color conversion film is provided. The film includes at least one narrow band emission phosphor dispersed within a binder matrix, wherein the narrow band emission phosphor has a D50 particle size from about 0.1 μm to about 15 μm and is selected from the group consisting of a green-emitting U6+-containing phosphor, a green-emitting Mn2+-containing phosphor, a red-emitting phosphor based on complex fluoride materials activated by Mn4+, and a mixture thereof. A device is also provided.
Claims34
A film prepared by printing an ink composition on a substrate and drying or curing the ink composition, wherein the ink composition comprises a binder material and at least one narrow band emission phosphor, the narrow band emission phosphor having a D50 particle size from about 0.1 μm to about 15 μm and is selected from the group consisting of a green-emitting U6+-containing phosphor, a green-emitting Mn2+-containing phosphor, a red-emitting phosphor based on complex fluoride materials activated by Mn4+, and a mixture thereof, wherein the ink composition has a viscosity in the range of 0.5 centipoise to 2000 centipoise.
A film prepared by printing an ink composition on a substrate and drying or curing the ink composition, wherein the ink composition comprises a binder material and at least one narrow band emission phosphor, the narrow band emission phosphor having a D50 particle size from about 0.1 μm to about 15 m and is selected from the group consisting of a green-emitting U6+-containing phosphor, a green-emitting Mn2+-containing phosphor, a red-emitting phosphor based on complex fluoride materials activated by Mn4+, and a mixture thereof, wherein the red-emitting phosphor based on complex fluoride materials activated by Mn4+ has a Mn % of at least 1 wt %.
A device comprising an LED light source optically coupled and/or radiationally connected to a film prepared by printing an ink composition on the LED light source and drying or curing the ink composition, wherein the ink composition comprises a binder material and at least one narrow band emission phosphor, the narrow band emission phosphor having a D50 particle size from about 0.1 μm to about 15 μm and is selected from the group consisting of a green-emitting U6+-containing phosphor, a green-emitting Mn2+-containing phosphor, a red-emitting phosphor based on complex fluoride materials activated by Mn4+, and a mixture thereof, wherein the red-emitting phosphor based on complex fluoride materials activated by Mn4+ has a Mn % of at least 1 wt %.
A film comprising a green-emitting U6+-containing phosphor uniformly dispersed within a binder matrix, wherein the green-emitting U6+-containing phosphor has a D50 particle size from about 0.1 μm to about 15 μm, and wherein the green U6+-containing phosphor has the formula in (i) or (ii):
- [Ba1−a-bSraCab]x[Mg,Zn]y(UO2)z([P,V]O4)2(x+y+z)/3, (i)
- where 0≤a≤1, 0≤b≤0.5, 0.75≤x≤1.25, 0.75≤y≤1.25, 0.75≤z≤1.25;
- [Ba1−a-bSraCab]p(UO2)q[P,V]rO(2p+2q+5r)/2, (ii)
- where 0≤a≤1, 0≤b≤1, 2.5≤p≤3.5, 1.75≤q≤2.25, 3.5≤r≤4.5.
A film prepared by printing an ink composition on a substrate and drying or curing the ink composition, wherein the ink composition comprises a binder material, at least a red-emitting phosphor based on complex fluoride materials activated by Mn4+, having a D50 particle size from about 0.1 μm to about 15 μm,
- wherein the ink composition being uniformly dispersed throughout the composition,
- wherein the red-emitting phosphor based on complex fluoride materials activated by Mn4+, has a Mn % of at least 1 wt %;
- wherein the film may have a thickness of no more than 250 micrometers, preferably no more than 50 micrometers;
- and
- wherein the film is substantially free of uniformity or mura defects.
A film prepared by printing an ink composition on a polyethylene terephthalate (PET) substrate and drying or curing the ink composition, wherein the ink composition comprises a binder material, at least a red-emitting phosphor based on complex fluoride materials activated by Mn4+, having a D50 particle size from about 0.1 μm to about 15 μm,
- wherein the red-emitting phosphor based on complex fluoride materials activated by Mn4+, has a Mn % of at least 1 wt %;
- and
- wherein the film further comprises an additional layer of PET substrate to cover the film.
Dependencies are inferred from the claim text.