| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 2523016F0 | Group IV element containing | 23 |
| 20090050849 | NON STOICHIOMETRIC TETRAGONAL COPPER ALKALINE EARTH SILICATE PHOSPHORS AND METHOD OF PREPARING THE SAME - Disclosed are non stoichiometric Copper Alkaline Earth Silicate phosphors activated by divalent europium for using them as high temperature stable luminescent materials for ultraviolet or daylight excitation. The phosphors are represented as the formula (Ba | 02-26-2009 |
| 20090134359 | PHOSPHOR RAW MATERIAL AND METHOD FOR PRODUCING ALLOY FOR PHOSPHOR RAW MATERIAL - Disclosed is a phosphor raw material which enables the production of phosphors with excellent characteristics and only small amounts of impurities. Specifically disclosed is a phosphor raw material that is in the form of an alloy and contains at least Si and one or more metal elements other than Si. Also disclosed is a method for producing an alloy for phosphor precursor that contains tetravalent metal elements M | 05-28-2009 |
| 20090152496 | COPPER-ALKALINE-EARTH-SILICATE MIXED CRYSTAL PHOSPHORS - This invention relates to luminescent materials for ultraviolet light or visible light excitation comprising copper-alkaline-earth dominated inorganic mixed crystals activated by rare earth elements. The luminescent material is composed of one or more than one compounds of silicate type and/or germinate or germanate-silicate type. Accordingly, the present invention is a very good possibility to substitute earth alkaline ions by copper for a shifting of the emission bands to longer or shorter wavelength, respectively. Luminescent compounds containing Copper with improved luminescent properties and also with improved stability against water, humidity as well as other polar solvents are provided. The present invention is to provide copper containing luminescent compounds, which has high correlated color temperature range from about 2,000K to 8,000K or 10,000K and CRI up to over 90. | 06-18-2009 |
| 20090194740 | Phosphor composition and display device including the same - A phosphor composition including a first phosphor represented by Formula 1: | 08-06-2009 |
| 20100078595 | USE OF CODOPING TO MODIFY THE SCINTILLATION PROPERTIES OF INORGANIC SCINTILLATORS DOPED WITH TRIVALENT ACTIVATORS - Crystals with improved scintillation and optical properties are achieved by codoping with a trivalent dopant and a divalent and/or a monovalent dopant. Embodiments include codoping LSO, YSO, GSO crystals and LYSO, LGSO, and LYGSO crystals. Embodiments also include codoped crystals with a controlled monovalent or divalent:trivalent dopant ratio of from about 1:1 for increased light yield to about 4:1 for faster decay time. | 04-01-2010 |
| 20100096592 | Red-Emitting Luminophore and Light Source Comprising such a Luminophore - A red-emitting phosphor composed of an M—Al—Si—N system, comprising a cation M, wherein M is represented by at least one of the elements Ca or Ba or Sr and, if appropriate, can additionally be combined with at least one further element from the group Mg, Zn, Cd, wherein the phosphor is activated with Eu, which partly replaces M, and wherein the phosphor additionally contains LiF | 04-22-2010 |
| 20100224830 | Silicate Phosphor for UV and Long-Wavelength Excitation and Preparation Method Thereof - The present invention relates to a phosphor for UV and long-wavelength excitation and a preparation method thereof, more particularly to a phosphor for UV and long-wavelength excitation prepared from a phosphor precursor comprising strontium, barium, zinc, silica and rare-earth metal, wherein the proportion of barium and zinc is optimized to obtain a color coordinate in the range of x=0.50-0.64 and y=0.38-0.51, and a method for preparing the same by heat-treating the phosphor precursor under a mixed gas atmosphere of nitrogen and hydrogen with specific proportion. Since heat treatment is possible even at low temperature, a phosphor for UV and long-wavelength excitation having superior luminescence characteristics and thus offering superior efficiency when applied to diodes or liquid crystal displays can be obtained without having to use conventional flux materials to lower baking temperature and without using toxic substances. | 09-09-2010 |
| 20100252778 | NOVEL NANOPARTICLE PHOSPHOR - An object of the present invention is to reduce the incompleteness of the surface state due to lattice constant and steric hindrance, which was heretofore nearly unavoidable, in the surface treatment of light-emitting semiconductor nanoparticles. The present invention provides an excellent luminescent material that has enhanced photoluminescence efficiency, reduced photoluminescence spectrum width, and increased chemical resistance. Specifically, the present invention provides a luminescent material comprising semiconductor nanoparticles having a mean particle size of 2 to 12 nm and a band gap of 3.8 eV or less, each of the semiconductor nanoparticles being coated with a silicon-containing layer, the semiconductor nanoparticles in the luminescent material having a peak emission wavelength 20 nm or more towards the longer-wavelength side than the peak emission wavelength of the semiconductor nanoparticles alone. | 10-07-2010 |
| 20100258766 | Phosphor and manufacturing method for the same, and light source - To provide a phosphor having an emission spectrum with a broad peak in a range from yellow color to red color (580 nm to 680 nm) and an excellent excitation band on the longer wavelength side from near ultraviolet/ultraviolet of excitation light to visible light (250 nm to 550 nm), and having an improved emission intensity. The phosphor is provided, which is given by a general composition formula expressed by MmAaBbOoNn:Z, (wherein element M is more than one kind of element having bivalent valency, element A is more than one kind of element having tervalent valency selected from the group consisting of Al, Ga, In, Tl, Y, Sc, P, As, Sb, and Bi, element B is more than one kind of element having tetravalent valency, O is oxygen, N is nitrogen, and element Z is more than one kind of element selected from rare earth elements or transitional metal elements, satisfying m>0, a>0, b>0 o≧0, and n=2/3m+a+4/3b−2/3o), and further containing boron and/or fluorine. | 10-14-2010 |
| 20110147660 | OXY-NITRIDE PYROSILICATE BASED PERSISTENT PHOSPHORS - A blue (Sr rich) or yellow (Ca rich) persistent phosphor composition is provided, along with methods for making and using the composition. More specifically, in one embodiment, the phosphor includes a material having a formula of A | 06-23-2011 |
| 20110147661 | NOVEL ALUMINOSILICATE BASED BLUE PERSISTENT PHOSPHORS - A blue persistent phosphor composition is provided, along with methods for making and using the composition. More specifically, in one embodiment, the phosphor includes a material having a formula of A | 06-23-2011 |
| 20120126174 | NON STOICHIOMETRIC TETRAGONAL COPPER ALKALINE EARTH SILICATE PHOSPHORS AND METHOD OF PREPARING THE SAME - Disclosed are non stoichiometric Copper Alkaline Earth Silicate phosphors activated by divalent europium for using them as high temperature stable luminescent materials for ultraviolet or daylight excitation. The phosphors are represented as the formula (Ba | 05-24-2012 |
| 20120153226 | WHITE PERSISTENT PHOSPHOR BLEND OR LAYERED STRUCTURE - This disclosure features a blend, or use together in at least two layers of an article of manufacture, of a first persistent phosphor, a second persistent phosphor and a third phosphor. The first persistent phosphor has a formula I: | 06-21-2012 |
| 20120187339 | OXYNITRIDE PHOSPHOR POWDER, NITRIDE PHOSPHOR POWDER, AND A PRODUCTION METHOD THEREFOR - The present disclosure relates to a producing method for oxynitride or nitride phosphor powders which can be used in displays such as vacuum fluorescent display (VFD), field emission display (FED) and LED display devices, or in lighting devices such as cold cathode fluorescent lamps (CCFL) and LED lamps, or in light-emitting apparatuses such as back-lights, wherein the producing method for phosphor powders comprises the step of subjecting part or all of a metal oxide to nitriding by calcining in an atmosphere containing nitrogen, using a fine carbon substance. | 07-26-2012 |
| 20120193578 | NEAR INFRARED DOPED PHOSPHORS HAVING A ZINC, GERMANIUM, GALLATE MATRIX - Phosphors based on transition metal-activated gallates, particularly Cr | 08-02-2012 |
| 20120273727 | SILICATE LUMINESCENT MATERIAL AND ITS PREPARATION METHOD - Silicate luminescent material and preparation method thereof are provided. The structural formula of the silicate luminescent material is Zn | 11-01-2012 |
| 20120286207 | LUMINESCENT MATERIAL - A luminescent material is disclosed. The luminescent material may include a first compound having a host lattice comprising first ions and oxygen. A first portion of the first ions may be substituted by copper ions. In one embodiment, the host lattice may include silicon, the copper ions may be divalent copper ions and the first compound may have an Olivine crystal structure, β-K | 11-15-2012 |
| 20130075661 | SILICATE LUMINOUS MATERIAL AND PREPARATION METHOD THEREOF - Silicate luminous material and preparation method thereof are provided. The luminous material is represented by the following chemical formula: Zn | 03-28-2013 |
| 20130126784 | ZINC MANGANESE SILICATE CONTAINING METAL PARTICLES LUMINESCENT MATERIALS AND PREPARATION METHODS THEREOF - Zinc manganese silicate containing metal particles luminescent materials and preparation methods thereof are provided. The said luminescent materials are represented by the general formula: Zn | 05-23-2013 |
| 20130126785 | METAL NANO PARTICLES DOPED WITH SILICATE LUMINESCENT MATERIALS AND PREPARATION METHODS THEREOF - Metal nano particles doped with silicate luminescent materials and preparation methods thereof are provided. The luminescent materials are represented by the general formula: (Sr | 05-23-2013 |
| 20140061537 | MULTI-DOPED LUTETIUM BASED OXYORTHOSILICATE SCINTILLATORS HAVING IMPROVED PHOTONIC PROPERTIES - The present invention relates to a set of multi-doped cerium-activated scintillation materials of the solid solutions on the basis of the rare earth silicate, comprising lutetium and having compositions represented by the chemical formulas: (Lu | 03-06-2014 |
| 20150102262 | SMOOTHING PHOSPHORS FOR AC LED LIGHTING - Disclosed are smoothing phosphors for AC LED lighting that are capable of prolonging the light emission time of an AC LED (or array of AC LEDs) during a ½ cycle response to a phase change of the alternating current to substantially reduce flicker. The smoothing phosphor of the present teachings comprises a matrix represented by the formula: M | 04-16-2015 |
| 20150337199 | GERMANATE LUMINESCENT MATERIAL AND PREPARATION METHOD THEREFOR - The present invention provides a germanate luminescent material, a general molecular formula thereof being Zn | 11-26-2015 |
