Class / Patent application number | Description | Number of patent applications / Date published |
252301500 | Tungsten containing | 10 |
20080224096 | PHOTOLUMINESCENT MATERIAL OF LIGHT-EMITTING DIODE PACKAGE STRUCTURE - An LED package structure including a carrier, an LED chip, an encapsulant and a PL material is provided, wherein the LED chip is disposed on the carrier for emitting light. The encapsulant encapsulates the LED chip. The PL material is distributed in the encapsulant. The PL material is suitable for being excited by the light emitted from the LED chip and scattering the light. Moreover, the present invention provides a novel PL material with a molecular formula of W | 09-18-2008 |
20090057612 | PHOSPHOR AND METHOD FOR MANUFACTURING THE SAME - It is an object to provide a novel phosphor which can be manufactured without using a defect formation step which is difficult to control, and a manufacturing method thereof. The phosphor has a structure including a phosphor host material and an emission excitation material which is dispersed in a marbled pattern in the phosphor host material while being in contact with it. The emission excitation material is selected from metal oxide, a semiconductor formed of an element belonging to Group 2B (Group 12) of the periodic table and an element belonging to Group 6B (Group 16) of the periodic table, or an element formed of an element belonging to Group 3B (Group 13) of the periodic table and an element belonging to Group 5B (Group 15) of the periodic table. The phosphor host material and the emission excitation material are mixed and baked with pressure to be joined. | 03-05-2009 |
20110042617 | TRANSPARENT PHOSPHOR AND PROCESS FOR PRODUCING THE TRANSPARENT PHOSPHOR - Provided are a transparent phosphor made without a resin or a low-melting-point glass that easily deteriorates and having a fine color rendering property, and a method of manufacturing the same. The transparent phosphor which provides white fluorescent light upon incidence of excitation light is characterized in that it is composed of two or more kinds of fluorescent phases, the fluorescent phases have a main phase made of an amorphous phase composed mainly of A (A being any one or more elements of Al, Ga, Ge, W, P, V, Zn, Si, B, Mg, Ca, Ba, Sr, and Sc), Ln (Ln being any one or more elements of Y, Gd, La, Sm, Dy, Ho, Er, Yb, and Lu), O, and R as an activator (R being any one or more elements of Eu, Tb, Ce, Sm, Tm, Pr, Nd, Dy, Ho, Er, Yb, Mn, Ti, Fe, Cr, and Pb that is/are other than an element or elements selected as Ln), and the fluorescent phases are different at least in the kind of R or the average valence of R. | 02-24-2011 |
20110309303 | Up-Conversion White Light Phosphors - Light emitting devices that include an energy source configured to generate light energy and an up-conversion phosphor configured to emit light having a wavelength shorter than that of the light energy generated from the energy source are provided. The up-conversion phosphor comprises an ordered oxyfluoride compound having a formula: A | 12-22-2011 |
20120181480 | BLUE PHOSPHOR, LIGHT-EMITTING DEVICE, AND PLASMA DISPLAY PANEL - The present invention provides a blue phosphor that exhibits high luminance and shows less luminance degradation during driving of a light-emitting device. The present invention is a blue phosphor represented by the general formula aBaO.bSrO.(1−a−b)EuO.cMgO.dAlO | 07-19-2012 |
20130214206 | TUNGSTATE FLUORESCENT MATERIALS AND PREPARATION METHODS THEREOF - Tungstate luminescent materials and preparation methods thereof are provided. The said luminescent materials are represented by the following general formula: RWO | 08-22-2013 |
20130221276 | YTTRIUM-ALUMINUM-GARNET-TYPE PHOSPHOR - It is an object to provide phosphors with high luminance. It also is an object to provide phosphors with less decrease in luminance due to a reduction in particle diameter. A first phosphor is represented by a general formula: aYO | 08-29-2013 |
20140145114 | CERIUM DOPED MAGNESIUM BARIUM TUNGSTATE LUMINESCENT THIN FILM, MANUFACTURING METHOD AND APPLICATION THEREOF - Cerium doped magnesium barium tungstate luminescent thin film, manufacturing method and application thereof are provided, said method for manufacturing cerium doped magnesium barium tungstate luminescent thin film comprises the following steps: mixing MgO, BaO, WO | 05-29-2014 |
20150014585 | Na3WO4F and Derivatives Thereof as a Scintillation Material and Their Methods of Making - Direct synthesis methods are generally provided that include reacting Na | 01-15-2015 |
20150041712 | COMPOSITE CERAMIC WHICH COMPRISES A CONVERSION PHOSPHOR AND A MATERIAL HAVING A NEGATIVE COEFFICIENT OF THERMAL EXPANSION - The present invention relates to a composite ceramic which comprises a conversion phosphor and a further material, characterised in that the further material has a negative coefficient of thermal expansion, and to a process for the preparation thereof. Furthermore, the present invention also relates to the use of the composite ceramic according to the invention as emission-converting material, preferably in a white light source, and to a light source, a lighting unit and a display device. | 02-12-2015 |