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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...
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7357882 |
Light emitting device and illuminator using the same
An object of the present invention is to provide a light emitting device having a high emission intensity, and a light emitting device having a high emission intensity and a good color rendering...
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7329371 |
Red phosphor for LED based lighting
Disclosed are phosphor compositions having the formula (RE 1-y Ce y )Mg 2-x Li x Si 3-x P x O 12 , where RE is at least one of Sc, Lu, Gd, Y, and Tb, 0.0001<x<0.1 and 0.001<y<0.1. When...
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7311859 |
Method to produce nanocrystalline powders of oxide-based phosphors for lighting applications
Some embodiments of the present invention are directed toward nanocrystalline oxide-based phosphor materials, and methods for making same. Typically, such methods comprise a steric entrapment route...
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7252787 |
Garnet phosphor materials having enhanced spectral characteristics
Phosphor compositions having the formula (Y 1-x-y-z Tb x Gd y Ce z ) 3 (M 1 M 2 ) t (Al 1-r-s Ga r In s ) A-2t O 12+D , where M 1 is Mg or Zn, M 2 is Si or Ge, 0<x+y<1, 0.01<z<0.1,...
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7247257 |
Light emitting device
To minimize the variability in the emitted light color and improve the unevenness of color tone, a light emitting device comprises a light emitting element and a fluorescent substance that is...
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7241399 |
Synthesis of nanoparticles
Methods for the preparation of inorganic nanoparticles capable of fluorescence, wherein the nanoparticles consist of a host material that comprises at least one dopant. The synthesis of the...
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7239082 |
Illumination device with at least one LED as the light source
The invention relates to a luminescence conversion led based illumination deice that emits primarily radiation in the range of from 370 and 430 nm of the optical spectrum (peak wavelength). Said...
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7226547 |
Electroluminescent phosphor powders, methods for making phosphor powders and devices incorporating same
Electroluminescent phosphor powders and a method for making phosphor powders. The phosphor powders have a small particle size, narrow particle size distribution and are substantially spherical. The...
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7215077 |
Plasma display apparatus and fluorescent material for plasma display panel
Fluorescent material used for a plasma display panel contains particles having various diameters wherein X 1 /Y is equal to or smaller than 10% where X 1 indicates a number of particles having a...
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7214330 |
Method of manufacturing phosphor powder, phosphor powder, and phosphor composition
A method of manufacturing a highly crystallized phosphor powder, comprising: making a raw material solution containing metal elements and/or semimetal elements that will be constituents of the...
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7175778 |
Self-aligning QCA based nanomaterials
The present application is directed to the preparation and use of a class of nanoparticles called Quantum Confined Atoms or QCA's. A QCA is a particle of material comprising a plurality of host...
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7161298 |
Plasma display unit
A plasma display device includes a blue phosphor composed of a compound represented by Me 3 MgSi 2 O 8 :Eu (where, Me is at least calcium (Ca), strontium (Sr), or barium (Ba)). Concentration of...
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7138757 |
High lumen output fluorescent lamp with high color rendition
A high lumen output compact fluorescent lamp is disclosed that has a luminous efficiency of 40 lumen/W or higher. The fluorescent lamp comprises an envelope enclosing a discharge space, means for...
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7091656 |
Light emitting device
To minimize the variability in the emitted light color and improve the unevenness of color tone, a light emitting device comprises a light emitting element and a fluorescent substance that is...
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7018564 |
Method for making phosphor ink and system using the same
A method for making phosphor ink is provided which uses ultrasonic vibrations to remove surface defect layers from phosphor particles and to quickly and uniformly disperse the phosphor particles...
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7008557 |
Production method of phosphor and phosphor
The present invention relates to a production method of a phosphor comprising the steps of: forming a phosphor precursor in a liquid phase; drying the phosphor precursor; and firing the dried...
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7001537 |
Phosphor and its production process
The present invention is to provide a phosphor of minimum particle size having an excellent crystallinity and a high brightness higher than conventional crude particles, which is usable for a...
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6994802 |
Cathodoluminescent phosphor powders, methods for making phosphor powders and devices incorporating same
Cathodoluminescent phosphor powders and a method for making phosphor powders. The phosphor powders have a small particle size, narrow particle size distribution and are substantially spherical. The...
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6965193 |
Red phosphors for use in high CRI fluorescent lamps
Novel red emitting phosphors for use in fluorescent lamps resulting in superior color rendering index values compared to conventional red phosphors. Also disclosed is a fluorescent lamp including a...
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6919060 |
Process for producing particles of a metal compound
The object of the present invention is to provide a process for producing particles of a metal compound having a spherical particle shape and an average particle diameter larger than 0.3 μm...
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6899827 |
Inorganic optical taggant and method of making
Sintered, translucent ceramic microbeads, preferably alumina, titania, zirconia, yttria, zirconium phosphate, or yttrium aluminum garnet (YAG) are doped with one or more optically active species....
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6899826 |
Process for producing fluorescent metal oxide material
A process for producing a metal oxide phosphor includes a step of firing a powder containing an organic metal chelate complex including a plurality of metals constituting the metal oxide at a...
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6893490 |
Ink for display panel and method for producing plasma display panel using the same
An ink for a display panel that at a time of application is a mixture of a powder material, a water-soluble resin included in a range of 1 wt % to 20 wt % inclusive of the ink, and a water-miscible...
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6855271 |
Coated phosphor filler and a method of forming the coated phosphor filler
An improved coated phosphor filler for an optical device includes a plurality of individual phosphor filler particles, and a coating layer having a plastic substance coated on each of the phosphor...
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6833086 |
Phosphor powder and production method therof, display panel, and flat-panel display device
A phosphor powder is composed of a host material made of an element coming under the group II of the periodic table and an element coming under the group VI of the periodic table, an activator and...
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6809781 |
Phosphor blends and backlight sources for liquid crystal displays
A phosphor composition that comprises at least one phosphor emitting in each of the blue, green, and red regions of the visible spectrum is disposed adjacent to a backlight source of a color liquid...
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6780346 |
Gallium nitride phosphor and method for producing it
A gallium nitride phosphor of which the particles are coated with a surface-treating compound that contains at least one of P and Sb.
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6777879 |
Gas discharge lamp comprising a phosphor layer
The invention relates to a gas discharge lamp for dielectrically impeded discharges, which gas discharge lamp is provided with a discharge vessel filled with a gas filling, which discharge vessel...
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6756104 |
Surface finishes on laser rods and slabs for laser peening systems
A laser gain medium and a method of manufacturing a laser medium, such as a laser rod, or slab for use in high-powered laser peening systems. A laser medium and method reduces stress risers along...
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6736995 |
Plasma picture screen with a phosphor layer
This invention relates to a plasma picture screen provided with a phosphor layer which comprises an intrinsically pigmented phosphor. The plasma picture screen has an improved value for the...
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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...
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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,...
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6692660 |
High luminescence phosphor particles and related particle compositions
Methods for producing metal/metalloid oxide particles comprise rare earth metals herein include reacting a reactant stream in a gas flow. The reactant stream includes a rare earth metal precursor...
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6666991 |
Fluorescent or phosphorescent composition
A fluorescent or luminous composition, comprising a multilayered film-coated powder having at least two coating films on a base particle, and a fluorescent or luminous substance; the composition,...
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6656859 |
Tellurite glasses and optical components
A family of tellurite glasses and optical components for telecommunication systems, the glasses consisting essentially of, as calculated in cation percent, 65-97% TeO 2 , and at least one...
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6627113 |
Phosphor consisting of hollow particles, phosphor slurry, phosphor beads for analysis using tracer technique and their production processes
A phosphor consisting of hollow particles, each hollow particle having an outer shell and a space in the inside of said outer shell.
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6572784 |
Luminescent pigments and foils with color-shifting properties
Interference pigment flakes and foils are provided which have luminescent and color-shifting properties. The pigment flakes can have a symmetrical coating structure on opposing sides of a core...
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6565770 |
Color-shifting pigments and foils with luminescent coatings
Interference pigment flakes and foils are provided which have luminescent and color-shifting properties. A luminescent material coating structure is provided which partially covers or encapsulates...
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6562260 |
Recovery of electroluminescsent phosphor from encapsulated material
A method of recovering a base phosphor from encapsulated phosphors, which comprises the steps of selecting a recovery vessel including a magnetic stir bar; adding to the recovery vessel, deionized...
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6525460 |
Very high color rendition fluorescent lamps
A high color-rendering fluorescent lamp comprising a phosphor layer wherein the phosphors are selected such that the general color rendering index, R a is greater than 96 or 97 or 98 at color...
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6517741 |
Color display screen with color pigment
A color display screen comprises a red phosphor and a color pigment having a general formula selected from the group consisting of: A 1−x A′ x BO 2−x N 1+x , where 0<x<1, A is Mg(II),...
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6458512 |
Oxynitride encapsulated electroluminescent phosphor particles
Encapsulated electroluminescent phosphor particles and a method of making same. Each electroluminescent phosphor particle is encapsulated by a substantially transparent metal oxynitride coating....
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6416688 |
High luminance blue color fluorescent substance for low-voltage and manufacturing method of the same
Disclosed is a low-voltage blue color fluorescent substance which is doped with 0.5 to 3 weight % of P, and a manufacturing method of the same. The above blue color fluorescent substance is...
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6395196 |
Process for producing electroluminescent phosphor with extended half-life
An electroluminescent phosphor with an extended half-life is created by means of the present invention by taking an amount of a phosphor and treating it with antimony comprising the steps of...
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6387299 |
Process for producing electroluminescent phosphor with increased efficiency
An electroluminescent phosphor with an increased efficiency is created by blending a chloride flux, a copper source and a zinc sulfide to form a mixture and then heating the mixture for a period of...
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6303051 |
Phosphate treated silicate phosphor
A novel phosphate treated silicate phosphor has been invented that exhibits improved lumen maintenance with respect to the untreated phosphor when used in a fluorescent lamp. In one aspect, a...
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6290874 |
Display screen comprising a metal oxide-containing phosphor composition
A display screen comprising a phosphor composition which includes a phosphor and a phosphor coating with a group of metal-oxygen compounds, the group of metal-oxygen compounds containing an...
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6264855 |
Process for preparing water resistant luminous pigments
A process for preparing a water resistant luminous pigment with durability, characterized in that a luminous pigment, in which an oxide matrix comprising at least one element selected from the...
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6120902 |
Luminescent article with protective coating and manufacture
A method of manufacturing a luminescent article comprising a self-supporting or supported phosphor containing layer having thereon a protective coating, said method comprising the step of applying...
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