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| Number | Title | Issue Date |
| 8177999 | Red phosphor, method for manufacturing the same and light emitting diode for using the same The present invention provides a red phosphor, a method for manufacturing the red phosphor and a light emitting device using the red phosphor, in which the red phosphor is expressed as a chemical formula of (Ca,Sr)1-x-yEuxPbyS, where... | 05/15/2012 |
| 8147717 | Green emitting phosphor A green emitting phosphor is provided, allowing the internal quantum efficiency to be increased. The green emitting phosphor comprises a mother crystal containing Sr, Ga and S, and a luminescent center, characterized in that, in an XRD pattern, the ratio of the diff... | 04/03/2012 |
| 8088302 | Green phosphor of thiogallate, red phosphor of alkaline earth sulfide and white light emitting device thereof The present invention relates to a white light emitting device in which a thiogallate based phosphor capable of emitting green light and an alkaline earth metal sulfide based phosphor capable of emitting red light are arranged on an upper surface of a light emitting... | 01/03/2012 |
| 8057702 | Procedure to obtain GdOS: Pr for CT with a very short afterglow The present invention is directed to a Gd2O2S:M fluorescent ceramic material with a very short afterglow, wherein M represents at least one element selected from the group Pr, Th, Yb, Dy, Sm and/or Ho and the Gd2O2S:M fluo... | 11/15/2011 |
| 8025817 | Fluorescent ceramic and fabrication method thereof The present invention relates to a fluorescent ceramic having the general formula Gd2O2S doped with M, whereby M represents at least one element selected form the group Ce, Pr, Eu, Tb, Yb, Dy, Sm and/or Ho, whereby said fluorescent ceramic comp... | 09/27/2011 |
| 8017037 | Fluorescent substance and light emitting device using the same A fluorescent substance capable of remarkably increasing the luminous intensity of a I-III-VI2 chalcopyrite type compound having a large band gap among chalcopyrite type compounds with manganese as luminescence centers, and being favorably used for a ligh... | 09/13/2011 |
| 8007685 | Red light phosphor and multilayer photo-transforming film The present invention relates to a red light phosphor, which is based on sulfide and activating agent containing rare earth strontium or hafnium. It is characterized by that the aforementioned materials are a fluorine-sulfur oxide containing lanthanum-yttrium-zircon... | 08/30/2011 |
| 7998365 | Thiogallate phosphor and white light emitting device employing the same The present invention relates to a thiogallate phosphor which is excited by ultraviolet or blue light to emit light with a relatively longer wavelength than that of the ultraviolet or blue light. The phosphor is expressed as a general formula of (A1-x-yEu... | 08/16/2011 |
| 7749405 | White-emitting phosphor blend and electroluminescent lamp containing same A white-emitting electroluminescent lamp is provided that uses a phosphor blend comprising a mixture of particles of an electroluminescent phosphor and particles of an europium-activated alkaline earth phosphor having the general formula Sr1-xCax | 07/06/2010 |
| 7686979 | Long afterglow luminescent material and its manufacturing method A long afterglow luminescent material of the formula aMO.bM′ (SβSe1-β).cAl2O3.d B2O3.eP2O5: xEu.yLn, wherein M is/are selected from Sr, Ca, Ba, and Mg, and any combinations t... | 03/30/2010 |
| 7651631 | Phosphor, optical device, and display device A phosphor, an optical device, and a display device are provided. The phosphor includes a composition represented by (Sr(1-x-y)CaxBay)(Ga(1-m-n)AlmInn)aS4:Eu, wherein the concent... | 01/26/2010 |
| 7648648 | Anti-stokes fluorescent material composition The invention relates to anti-Stokes fluorescent material compositions which, upon excitation by IR radiation, emits IR radiation without significant quantities of visible blue light being emitted at the same time, and which are therefore suitable as invisible secur... | 01/19/2010 |
| 7582228 | Barium thioaluminate phosphor materials with novel crystal structures The present invention provides thioaluminate phosphor compounds BaAl2S4 and BaAl4S7 with novel crystal structures that have higher luminosity and improved color coordinates. The invention is also directed to rare earth ele... | 09/01/2009 |
| 7540976 | Sputtering target for forming thin phosphor film A sputtering target for fluorescent thin-film formation comprising a matrix material and a luminescent center material, wherein said matrix material has a chemical composition represented by the following formula (1), and simultaneously satisfies conditions r... | 06/02/2009 |
| 7531109 | Rare earth oxysulfide scintillator and methods for producing same A method of producing a rare earth oxysulfide scintillating ceramic body includes heat treatment to form a consolidated body, followed by gas hot isostatic pressing (GHIPing). A powder is first provided having the general formula (M1-xLnx)... | 05/12/2009 |
| 7517473 | Method for producing blue phosphor A method for producing a blue phosphor, comprising firing a mixture for 2 to 24 hours at a temperature of 800° C. or higher in an atmosphere of hydrogen sulfide, carbon disulfide, or an inert gas, the mixture containing a barium compound component, a silicon compou... | 04/14/2009 |
| 7462299 | Doped-type metal sulfide phosphor nanoparticle, dispersion thereof, and method for producing the same A doped-type metal sulfide phosphor nanoparticle dispersion, comprising a doped-type metal sulfide phosphor nanoparticle dispersed in water and/or a hydrophilic solvent, wherein the doped-type metal sulfide phosphor nanoparticle comprises a surface that is mo... | 12/09/2008 |
| 7452483 | Yellow-emitting phosphor blend for electroluminescent lamps A phosphor blend for an electroluminescent lamp is described that comprises a green-emitting electroluminescent phosphor and a red-emitting photoluminescent phosphor, the blend exhibiting an x color coordinate from 0.220 to 0.350 and a y color coordinate from 0.450 ... | 11/18/2008 |
| 7427367 | Barium thioaluminate phosphor materials with novel crystal structures The present invention provides thioaluminate phosphor compounds BaAl2S4 and BaAl4S7 with novel crystal structures that have higher luminosity and improved color coordinates. The invention is also directed to rare earth ele... | 09/23/2008 |
| 7427366 | Efficient, green-emitting phosphors, and combinations with red-emitting phosphors Provided among other things is a phosphor of the formula Sr1-x3Cax3Ga2S4:Eu:xGa2S3 (I) wherein x is 0 to about 0.2 (or about 0.0001 to about 0.2), wherein x3 is 0.0001 to 1, a... | 09/23/2008 |
| 7378038 | Process for producing phosphors A mixed melt, which contains urea and/or a urea derivative and contains a metal compound, is prepared. The mixed melt is solidified, by heating, whereby the urea and/or urea derivative is decomposed, a precursor being thereby prepared. The thus prepared precursor is... | 05/27/2008 |
| 7351356 | Luminescent material, especially for LED application UV-blue excitable green luminescent material including an Eu-doped oxynitride host lattice with general composition MSi2O2N2, wherein M is at least one of an alkaline earth metal chosen from the group Ca, Sr, Ba. ... | 04/01/2008 |
| 7338618 | Doped-type metal sulfide phosphor nanoparticle, dispersion thereof, and method for producing the same A doped-type metal sulfide phosphor nanoparticle dispersion, comprising a doped-type metal sulfide phosphor nanoparticle dispersed in a hydrophobic organic solvent, wherein the doped-type metal sulfide phosphor nanoparticle compris... | 03/04/2008 |
| 7125501 | High efficiency alkaline earth metal thiogallate-based phosphors Provided, among other things, is a strontium calcium thiogallate phosphor doped with divalent europium, and having the following formula: Sr1-xCaxGa2S4:yEu2+.zGa2S3, whe... | 10/24/2006 |
| 7022261 | Sulfur-containing phosphor powders, methods for making phosphor powders and devices incorporating same Sulfur-containing phosphor powders, methods for making phosphor powders and devices incorporating same. The powders have a small particle size, narrow particle size distribution and are substantially spherical. The method of the invention permits the continuous prod... | 04/04/2006 |
| 7018565 | Efficient, size-selected green-emitting phosphors Provided among other things is a method of forming a phosphor of the formula SrGa2S4:Eu:xGa2S3 (I) wherein x is 0.0001 to 0.2, wherein a minor part of the europium component may be substituted with... | 03/28/2006 |
| 6939482 | Phosphor thin film, manufacturing method of the same, and electroluminescent panel A phosphor thin film includes a matrix material expressed by a composition formula AxByOwSz, and a substance functioning as a luminescence center in the matrix material. In the composition formula, A represents at least on... | 09/06/2005 |
| 6926848 | Compound based on an alkaline-earth metal, sulphur and aluminium, gallium or indium, its method of preparation and its use as a phosphor The invention relates to a compound based on at least one element A chosen from alkaline-earth metals, on at least one element B chosen from aluminium, gallium and indium, on sulphur and on a dopant capable of giving the compound luminescence properties, which is ch... | 08/09/2005 |
| 6843938 | Methods for preparing rare-earth oxysulfide phosphors, and resulting materials The present invention provides new and useful methods for preparing rare-earth oxysulfide phosphors. Advantageously, in accordance with the methods of the subject invention, rare-earth oxysulfide phosphors can be prepared with lower reaction temperatures and fewer p... | 01/18/2005 |
| 6783700 | Red photoluminescent phosphors A red-emitting strontium-calcium sulfide phosphor doped with europium and a halide. These phosphors are made by combining their insoluble sulfates, adding europium as an activator, firing in hydrogen sulfide to form the corresponding sulfides, adding a halide co-act... | 08/31/2004 |
| 6773629 | Compound based on an alkaline-earth metal, sulphur and aluminium, gallium or indium, its method of preparation and its use as a phosphor The invention relates to a compound based on at least one element A chosen from alkaline-earth metals, on at least one element B chosen from aluminium, gallium and indium, on sulphur and on a dopant capable of giving the compound luminescence properties, which is ch... | 08/10/2004 |
| 6761835 | Phosphor multilayer and EL panel The invention aims to provide a phosphor multilayer eliminating a need for filters, having a satisfactory color purity and useful in white monochromatic EL devices, and an EL panel. Such objects are achieved by a phosphor multilayer comprising at least a first thin ... | 07/13/2004 |
| 6761836 | Phosphor and flourescent display device A yellow light emission phosphor usable in a fluorescent display device does not include cadmium and Eu concentration in the yellow light emission phosphor is reduced to a range of about 0.001 mol % to about 0.1 mol %. The phosphor on a fluorescent display driven at... | 07/13/2004 |
| 6702959 | Long life, white light emitting electroluminescent phosphor A long-life, white-emitting phosphor blend is provided which comprises about 75 wt. % of a first electroluminescent phosphor having an x color coordinate of about 0.530 and a y color coordinate of about 0.455; about 10 wt. % of a second electroluminescent... | 03/09/2004 |
| 6699406 | Rare earth doped host materials A rare earth element doped composition having a dopant concentration of up to about 60 mole percent of one or more rare earth elements selected from Tb, Dy, Ho, Er, Tm, Yb and Lu, wherein the composition is optically transparent to wavelengths at which ex... | 03/02/2004 |
| 6700322 | Light source with organic layer and photoluminescent layer A light source comprises an organic light emitting device which emits radiation having a first spectrum and a phosphor layer which absorbs a portion of the light emitted by the organic light emitting layer and which emits light having a second spectrum. T... | 03/02/2004 |
| 6695982 | Highly efficient flourescent materials A high efficiency phosphor from the class of the thiometallates, preferably of the thiogallates. The thiometallate being made so as to correspond to the formula (AS).multidot.w(B2 S3), where A is at least one divalent cation selected... | 02/24/2004 |
| 6695981 | Method for manufacturing luminescent material, luminescent material manufactured by the same manufacturing method, and display substrate and display apparatus having the same luminescent material The present invention provides a method for manufacturing a luminescent material whereby the surfaces of phosphor particles are uniformly coated with glass, and a luminescent material made up of such particles is easily obtainable, a luminescent material ... | 02/24/2004 |
| 6695980 | Compressed fluid formulation containing electroluminescent material An imaging composition comprises a mixture of a fluid and a functional material; wherein the fluid is compressed and the functional material is an electroluminescent material which is dissolved, dispersed and/or solubilized in the compressed fluid; and wh... | 02/24/2004 |
| 6686062 | Magnesium calcium thioaluminate phosphor A thin film phosphor for an electroluminescent device, the phosphor being a compound of the formula Mgx Ca1-x Al2 S4 :M, where the value of x is in the range 0 | 02/03/2004 |
