Abstract: Provided is a solid-state image sensor that includes a micro lens through which incident light is condensed, a photoelectrical conversion unit that generates electric charge based on the condensed incident light, and a translucent plate formed between the micro lens and the photoelectrical conversion unit and including a light-shielding wall provided between a translucent part provided for each pixel and the pixel. An antireflection film including films of two layers or more is formed between the light-shielding wall and the translucent part.

Abstract: Methods and systems for performing relatively high energy X-ray Fluorescence (XRF) measurements and relatively low energy X-ray photoelectron spectroscopy (XPS) measurements over a desired inspection area of a specimen are presented. Combined XPS and XRF measurements of a specimen are achieved with illumination tailored to each respective metrology technique. A high brightness, high energy x-ray illumination source is employed in combination with one or more secondary fluorescence targets. The high energy x-ray illumination source supplies high energy x-ray illumination to a specimen to perform high energy XRF measurements. In addition, the high energy x-ray illumination source supplies high energy x-ray illumination to one or more secondary fluorescence targets. The one or more secondary fluorescence targets absorb some of the high energy x-ray photons and emit x-ray emission lines at a lower energy.

Abstract: A lighting device include a first string of light emitting diodes (LEDs) to emit a white light having a warm white Correlated Color Temperature (CCT) and a second string of LEDs. The second string of LEDs includes blue light LEDs that emit a blue light and green light LEDs that emit a green light. The lighting device further includes a tuning circuit to adjust an amount of current flowing through the second string of LEDs. The warm white light, the blue light and the green light produce a combined light, and a CCT of the combined light is tuned by adjusting the amount of current flowing through the second string of LEDs.

Abstract: A ceramic composite for light conversion, which can make the fluorescence dominant wavelength longer up to 580 nm, further arbitrarily adjust the wavelength in the range of 570 to 580 nm, and undergoes no decrease in fluorescence intensity even when the fluorescence dominant wavelength is made longer, with luminescence unevenness suppressed. A light-emitting device comprising ceramic composite mentioned above. The ceramic composite for light conversion is a solidified body including a composition expressed by the following formula (1), where the composition has a structure where at least two oxide phases of a first phase and a second phase are continuously and three-dimensionally entangled mutually, and the ceramic composite for light conversion is characterized in that the first phase is a (Tb, Y)3Al5O12 phase activated with Ce for producing fluorescence, whereas the second phase is an Al2O3 phase.

Abstract: A fluorescent lamp includes a glass envelope; at least two electrodes connected to the glass envelope; mercury vapor and an inert gas within the glass envelope; and a phosphor within the glass envelope, wherein the phosphor blend includes aluminum nitride. The phosphor may be a wurtzite (hexagonal) crystalline structure Al(1-x)MxN phosphor, where M may be drawn from beryllium, magnesium, calcium, strontium, barium, zinc, scandium, yttrium, lanthanum, cerium, praseodymium, europium, gadolinium, terbium, ytterbium, bismuth, manganese, silicon, germanium, tin, boron, or gallium is synthesized to include dopants to control its luminescence under ultraviolet excitation. The disclosed Al(1-x)MxN:Mn phosphor provides bright orange-red emission, comparable in efficiency and spectrum to that of the standard orange-red phosphor used in fluorescent lighting, Y2O3:Eu.

Abstract: A photoluminescence color display comprises a display panel that displays red, green and blue pixel areas, an excitation source operable to generate excitation radiation for operating the display, and a photoluminescence color-element plate. The color-element plate comprises at least one photoluminescence material, such as a phosphor material or quantum dots, that is operable to emit light corresponding to red, green and blue pixel areas of the display in response to said excitation radiation. Additionally, the photo-luminescence color display comprises a wavelength selective filter that is provided between the color-element plate and the excitation source. The filter has a transmission characteristic that allows the passage of excitation radiation from the excitation source to excite the at least one photoluminescence material whilst preventing the passage of photoluminescence light back to the excitation source thereby prevent cross contamination of light among the different pixel areas of the display.

Abstract: A color/color temperature tunable light emitting device comprises: an excitation source (LED) operable to generate light of a first wavelength range and a wavelength converting component comprising a phosphor material which is operable to convert at least a part of the light into light of a second wavelength range. Light emitted by the device comprises the combined light of the first and second wavelength ranges. The wavelength converting component has a wavelength converting property (phosphor material concentration per unit area) that varies spatially. The color of light generated by the source is tunable by relative movement of the wavelength converting component and excitation source such that the light of the first wavelength range is incident on a different part of the wavelength converting component and the generated light comprises different relative proportions of light of the first and second wavelength ranges.

Abstract: A phosphor which emits light having high brightness, serves as an excellent orange or red phosphor whose light brightness is less decreased when exposed to an excitation source contains a crystal phase having the chemical composition expressed by the general formula [1]: (1?a?b)(Ln?pMII?1?pMIII?MIV?N3).a(MIV?(3n+2)/4NnO).b(AMIV?2N3)??[1] wherein Ln? represents a metal element selected from the group consisting of lanthanoids, Mn, and Ti; MnII? represents a divalent metal element except the Ln? element; MIII? represents a trivalent metal element; MIV? represents a tetravalent metal element; A represents a metal element selected from the group consisting of Li, Na, and K; 0<p?0.2; 0?a, 0?b, a+b>0, 0?n, and 0.002?(3n+2)a/4?0.9.

Abstract: In order to provide an LED light emitting device that can easily control a color temperature of white light, the LED light emitting device is provided with a plurality of types of light emitting parts that: respectively have LED elements that emit ultraviolet radiation or violet color visible light, and phosphors that absorb the ultraviolet radiation or violet color visible light to emit colored light; and emit the colored light, wherein: the colored light emitted by the plurality of types of light emitting parts become white light when all mixed with each other; the LED elements of the plurality of types of light emitting parts are all the same ones, and mounted on a single base material; and two or more light emitting parts overlap with each other in their parts.

Abstract: A light emitting element includes a light-emitting source for emitting light at a wavelength of 330 to 500 nm and a constituent phosphor. The constituent phosphor includes a compound including M, A, Al, O, and N, where M is at least one kind of element selected from Mn, Ce, Nd, Sm, Eu, Tb, Dy, Ho, Er, Tm, and Yb, and A is at least one kind of element selected from C, Si, Ge, Sn, B, Ga, In, Mg, Ca, Sr, Ba, Sc, Y, La, Gd, Lu, Ti, Zr, Hf, Ta, and W.

Abstract: A green phosphor including a compound represented by Formula 1 (Y3-xMx) (Al5-yM?y)O12:Cez and a pigment. The green phosphor having the compound represented by Formula 1 and a pigment has a shorter decay time than conventional phosphors, and thereby confers excellent luminescence characteristics and color purity. A display panel including the green phosphor 1 is also provided herein.

Abstract: A light emitting device that has excellent color rendering performance is provided. The light emitting device comprises, a light emitting element, a red phosphor formed from a nitride phosphor that emits light when excited by the light from the light emitting element, a green phosphor formed from a halosilicate that emits light when excited by the light from the light emitting element and a YAG phosphor emitting light when excited by the light from the light emitting element.

Abstract: In a fluorescent lamp, an initial chromaticity change can be suppressed. An atmosphere in contact with a blue light-emission phosphor forming a phosphor particle layer 3 that contains argon (Ar) and neon (Ne) shown by the following equation A/(A+N)?0.04, wherein A represents a mole fraction of argon and N represents a mole fraction of neon.

Abstract: A phosphor which emits light having high brightness, serves as an excellent orange or red phosphor whose light brightness is less decreased when exposed to an excitation source contains a crystal phase having the chemical composition expressed by the general formula [1]: (1?a?b)(Ln?pMII?1?pMIII?MIV?N3).a(MIV?(3n+2)/4NnO).b(AMIV?2N3)??[1] wherein Ln? represents a metal element selected from the group consisting of lanthanoids, Mn, and Ti; MnII? represents a divalent metal element except the Ln? element; MIII? represents a trivalent metal element; MIV? represents a tetravalent metal element; A represents a metal element selected from the group consisting of Li, Na, and K; 0<p?0.2; 0?a, 0?b, a+b>0, 0?n, and 0.002?(3n+2)a/4?0.9.

Abstract: An object of the present invention is to provide a moving picture displayable liquid crystal display device capable of attaining satisfactory moving picture characteristics, color reproducibility and reliability at the same time.

Abstract: A blue fluorescent material having excellent durability and a high luminance, especially one emitting a high-luminance light by the action of electron rays. The fluorescent material comprises inorganic crystals having a crystal structure which is an AlN crystalline, AlN polycrystalline, or AlN solid-solution crystalline structure. It is characterized in that the inorganic crystals contain at least europium in solution and have an oxygen content of 0.4 mass % or lower and that the fluorescent material emits fluorescence derived from divalent europium ions upon irradiation with an excitation source. More preferably, the fluorescent material contains a given metallic element and silicon. Also provided are a process for producing the fluorescent material and an illuminator including the blue fluorescent material.

Abstract: The invention relates to phosphors having a garnet structure of the formula I (Ya,Gdb,Luc,Sed,Sme,Tbf,Prg,Thh,Iri,Sbj,Bik)3-x(All,Gam)5O12:Cex??(I) where a+b+c+d+e+f+g+h+i+j+k=1 l+m=1 and x=0.005 to 0.1, and to a process for the preparation of these phosphors, and to the use thereof as conversion phosphors for conversion of the blue or near-UV emission from an LED.

Abstract: Disclosed are violet, blue, and green phosphors having excellent durability and high luminance. Specifically disclosed is a phosphor which contains a metal element M (M is at least one element selected from among Mn, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Tm and Yb) for constituting a metal ion, which is solid-solubilized in an AlON crystal, an AlON solid solution crystal or an inorganic crystal having the same crystal structure as AlON. The phosphor is capable of emitting fluorescence having a peak in the wavelength range from 300 nm to 700 nm. Also disclosed is a method for producing such a phosphor. Further disclosed are an illuminating device and an image display each containing such a phosphor.

Abstract: A light conversion structure ensuring good light transmission and less deterioration and capable of controlling light to a desired color tone and emitting a highly bright light, and a light-emitting device using the same. The light conversion structure is a light conversion structure including a layer formed of a ceramic composite, which absorbs a part of a first light to emit a second light and transmits a part of the first light, and a fluorescent layer for the control of color tone, which is formed on the surface of the ceramic composite and which absorbs a part of the first light or a part of the second light to emit a third light and transmits a part of the first light or a part of the second light, wherein the ceramic composite includes a solidified body where at least two or more metal oxide phases are formed continuously and three-dimensionally entangled with each other, and at least one metal oxide phase in the solidified body includes a metal element oxide capable of emitting fluorescence.

Abstract: A multicolor electronic display is based on an array of luminescent semiconductor nanocrystals. Nanocrystals which emit light of different colors are grouped into pixels. The nanocrystals are optically pumped to produce a multicolor display. Different sized nanocrystals are used to produce the different colors. A variety of pixel addressing systems can be used.

Abstract: The invention provides borate phosphors composed of Ma(Mb)1-xBO3:(Mc)x, wherein Ma is Li, Na, K, Rb, Cs, or combinations thereof, Mb is Mg, Ca, Sr, Ba, Zn or combinations thereof, Mc is Y, La, Pr, Nd, Eu, Gd, Tb, Ce, Dy, Yb, Er, Sc, Mn, Zn, Cu, Ni, Lu, or combinations thereof, and 0?x?0.3. The borate phosphors emit visible light under the excitation of ultraviolet light or blue light, and may be further collocated with different colored phosphors to provide a white light illumination device.

Abstract: A fluorescence particle 17 according to the present invention is used for a light emitting display device and is made of a fluorescent material. The fluorescent material has at least one element 18 selected from the group consisting of Al, Mg, Ca, Ba, Sr and Y. Within a range 17a from the surface 17s of the fluorescence particle through a depth of 20 nm, the at least one element 18 has a local maximum of its concentration profile in the depth direction.

Abstract: This invention provides a blue phosphor, which has higher blue brightness and larger half-value width in an emission spectrum as compared with the conventional rare earth-activated sialon phosphor and has better durability as compared with the conventional oxide phosphor. The phosphor comprises a metal element M, wherein M represents Ce, dissolved as a solid solute in a nitride or oxynitride crystal having a ?-type Si3N4 crystal structure, an AlN crystal structure, or an AlN polytype structure, and emits fluorescence having a peak in a wavelength region of 450 nm to 500 nm upon exposure to light from an excitation source.

Abstract: To provide a lighting unit which: does not greatly affect the design of a light guide plate; and has a long lifetime, high efficiency, and a wide color reproduction range by means of a phosphor. In view of the foregoing, the lighting unit of the present invention is constituted in such a manner that a phosphor bead or a phosphor film is arranged on at least one of the light irradiation plane of a light guide plate, the rear surface of the light guide plate, and the light incidence plane of the light guide plate. In addition, a phosphor film is constituted by using: a phosphor bead formed of a phosphor particle and a water-impervious material with which the phosphor particle is coated so that the particle is confined in the material; and a polymer film holding the phosphor bead.

Abstract: A multicolor electronic display is based on an array of luminescent semiconductor nanocrystals. Nanocrystals which emit light of different colors are grouped into pixels. The nanocrystals are optically pumped to produce a multicolor display. Different sized nanocrystals are used to produce the different colors. A variety of pixel addressing systems can be used.

Abstract: An illumination device has a blue light emitting element that emits blue light and a light guide member that guides blue light emitted from the blue light emitting element to a light exit surface of the light guide member. A first color conversion element includes a red phosphor that emits red light in response to excitation with the blue light. The first color conversion element is disposed on an optical path between the blue light emitting element and the light guide member. A second color conversion element is disposed on a light exit surface side of the light guide member and separated from the first color conversion element. The second color conversion element comprises a pair of non-permeable transparent substrates, a resin disposed between the non-permeable transparent substrates, and a green phosphor dispersed in the resin for emitting green light in response to excitation with the blue light.

Abstract: To provide an imaging device that shows high resolution and high luminance and produces good-quality images, an imaging device includes phosphor layer having a thickness of 40 ?m or less and containing a phosphor having a composition represented by chemical formula: Y2?x?yTbxScySiO5, wherein “x” and “y” are atomic ratios and satisfy the following conditions: 0<x?1 and 0<y?1. The phosphor preferably has a strongest diffraction peak at diffraction angle 2? of 30.65° to 30.9° in X-ray diffraction for better properties. The phosphor can be prepared by firing a mixture of a compound containing Y, Sc, and Tb with a compound containing Si.

Abstract: A phosphor represented by a general formula: M1xM22?xSi2O6Raz . . . (1) wherein, M1 and M2 are alkaline earth metals, x<2, Ra is Ce or Eu and 0.005?z?0.05), and wherein a variation of y-value of CIE chromaticity relative to the quantity of charge applied per unit area is dy/dQ?0.0001 and the y-value of CIE chromaticity is y?0.080.

Abstract: A chip-type light-emitting semiconductor device includes: a substrate 4; a blue LED 1 mounted on the substrate 4; and a luminescent layer 3 made of a mixture of yellow/yellowish phosphor particles 2 and a base material 13 (translucent resin). The yellow/yellowish phosphor particles 2 is a silicate phosphor which absorbs blue light emitted by the blue LED 1 to emit a fluorescence having a main emission peak in the wavelength range from 550 nm to 600 nm, inclusive, and which contains, as a main component, a compound expressed by the chemical formula: (Sr1-a1-b1-xBaa1Cab1Eux)2SiO4 (0?a1?0.3, 0?b1?0.8 and 0<x<1). The silicate phosphor particles disperse substantially evenly in the resin easily. As a result, excellent white light is obtained.

Abstract: The present invention aims at providing a chemically stabilized inorganic phosphor, among oxynitride phosphors including alkaline earths, which oxynitride phosphor emits orange or red light at longer wavelengths at higher luminance than conventional sialon phosphors activated by rare earths. The present invention further aims at providing a light emitting instrument based on the phosphor, for a lighting instrument excellent in color rendering property and for an image displaying apparatus excellent in durability. The solving means resides in provision of a fundamental phosphor comprising: a composition on a pseudo-ternary phase diagram including AO (A is one kind or two or more kinds of element(s) selected from Mg, Ca, Sr, and Ba; and AO is oxide of A), Si3N4, and SiO2 as end members, respectively, and satisfying all of the following conditions: in a composition formula, pAO-qSi3N4-rSiO2(p+q+r=1), 0.1?p?0.95??(1), 0.05?q?0.9??(2), and 0?r?0.

Abstract: To provide a phosphor for an electron beam excitation with a small deterioration in an emission efficiency and capable of maintaining a high luminance, even when an excitation density of an electron beam for a phosphor excitation is increased. As raw materials, Ca3N2(2N), AlN(3N), Si3N4(3N), and Eu2O3(3N) are prepared, and the raw materials thus prepared are measured and mixed, so that a molar ratio of each element becomes (Ca+Eu):Al:Si=1:1:1. Then, the mixture thus obtained is maintained and fired for at 1500° C. for 3 hours, and thereafter crushed, to manufacture the phosphor having a composition formula Ca0.985SiAlN3:Eu0.015.

Abstract: A phosphor composition that contains a phosphor host having as a main component a composition represented by a composition formula: MAlSiN3, where “M” is Sr or Sr in combination with at least one element selected from the group consisting of Mg, Ca, Ba, and Zn, in which Sr is a main component. The phosphor composition is activated by replacing a part of the M in the phosphor host composition with Eu2+. This enables a light-emitting device emitting white light and satisfying both a high color rendering property and a high luminous flux to be provided.

Abstract: Sialon fluorescent materials with activated Eu or other rare earth ions have been known as fluorescent materials capable of being excited by blue light to emit yellow light. An oxynitride fluorescent material can emit light having a far wider range of wavelengths than ever before, and can be included in a light-emitting device. A fluorescent material contains as a main component a crystal phase having a general formula La3Si8N11O4 or La3Si8?xAlxN11?xO4+x where 0<x?4, to which an optically active element (M) including one or more elements selected from Mn, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu is added and contained as a luminescence center component.

Abstract: The present invention aims at providing a blue-aimed phosphor powder which is more excellent in emission characteristic than the conventional rare-earth activated sialon phosphors and which is more excellent in durability than the conventional oxide phosphors. The solving means resides in: firing a starting material mixture in a nitrogen atmosphere at a temperature range between 1,500° C. inclusive and 2,200° C. inclusive, wherein the starting material mixture is a mixture of metallic compounds, and is capable of constituting a composition comprising M, A, Si, Al, O, and N (M is one kind or two or more kinds of element(s) selected from Mn, Ce, Nd, Sm, Eu, Tb, Dy, Ho, Er, Tm, and Yb; and A is one kind or two or more kinds of element(s) selected from C, Si, Ge, Sn, B, Ga, In, Mg, Ca, Sr, Ba, Sc, Y, La, Gd, Lu, Ti, Zr, Hf, Ta, and W) by firing; to obtain a phosphor which emits fluorescence having a peak at a wavelength within a range of 400 nm to 700 nm, by irradiation of an excitation source.

Abstract: Provided are a phosphor paste composition, a flat display device including the same, and a method of manufacturing the flat display device. The phosphor paste composition contains a phosphor with at least a heat-resistant material selected from a Group II atom-containing material, a Group III atom-containing material, and a Group IV atom-containing material, a binder, and an organic solvent. By using the phosphor paste composition, the deterioration of the phosphor can be prevented during a heat treating process. The flat display device includes a phosphor layer containing the phosphor coated with the heat-resistant material such that lifetime of the flat display device is increased and a permanent residual image phenomenon, the adsorption of water by the phosphor, and the like can be prevented.

Abstract: A phosphor layer having improved contrast and brightness characteristics and a display device including the same are provided. The phosphor layer is made out of an ultra-fine pigment, a dispersant, a phosphor, a photosensitizer and a binder. The phosphor has a uniform distribution along the thickness of the phosphor layer, and the pigment varies in content over the thickness of the phosphor layer. A method of forming the phosphor layer is based on existing phosphor layer processes and includes a reduced number of processing steps than a filter screen method, thereby markedly lowering the manufacturing costs. The phosphor layer can be used in a cathode ray tube, a plasma display panel, a field emission display, and an organic electroluminescent device.

Abstract: A phosphor including a matrix in the form of titanate expressed by Ca1-xSrxTiO3 (0<x?0.5), and Pr (praseodymium) and Li (lithium) that are added to the matrix. The phosphor may further include Zn (zinc) that is added as well as the Pr and Li to the matrix. Also disposed is a process of manufacturing the phosphor, including: a mixing step of mixing a matrix material, a first additive material including Pr, and a second additive material including Li, so as to obtain a mixture; and a firing step of firing the obtained mixture at a firing temperature of from 1050 to 1250° C.

Abstract: Existent imaging device involves a problem of low resolution and incapable of satisfying all of long lifetime, high luminance, and favorable color reproduction. The foregoing object can be attained according to the invention in an imaging device having excitation unit of irradiating an excitation energy to a phosphor layer to emit a light, in which at least a portion of a phosphor forming a phosphor layer contains a phosphor having a composition represented by the general formula (La1-x-y-zLnxScyMz)2SiO5 where Ln represents at least one element of Tb and Ce, M represents at least one element of Lu, Y and Gd, and x, y, and z satisfy: 0<x<1, 0<y<1, and 0<z<1.

Abstract: There is provided composite nano-particles comprising nano-crystal particles dispersed stably and individually in suspension in high concentration without mutual aggregation of the nano-particles. A determined amount of pure water or deionized water is poured into a reactor, into which is introduced nitrogen gas at rate of 300 cm3/min for a given time while agitating with a stirrer to remove dissolved oxygen in the pure water, allowing to stand in an atmosphere of nitrogen. Next, the inside of the reactor is maintained in an atmosphere of nitrogen and sodium citrate as a dispersion-stabilizing agent, an aqueous solution of MPS as a surface-modifying agent, an anion aqueous solution for co-precipitation as a nano-crystal and a cation aqueous solution are added, in that order. Then, an aqueous solution of sodium silicate is added to the reactor, which is then allowed to stand in the dark place in an atmosphere of nitrogen after agitation.

Abstract: The disclosed method can improve the luminescence life of an image display device. By using a blue luminescent phosphor having the phosphor component ZnS:M, N (where M is one or more elements selected from Cu, Ag, and Au, and N is one or more elements selected from Al, Ga, In, and Cl); wherein a shoulder is observed at around 400 nm (3.10 eV) of a cathode-luminescence spectrum of a field-emission display. A phosphor of a field-emission display of the present invention has improved characteristics against deterioration by electron-beam irradiation and an excellent luminescence maintenance factor, therefore, the luminescence life characteristics of a display are improved.

Abstract: A phosphor layer having improved contrast and brightness characteristics and a display device including the same are provided. The phosphor layer is made out of an ultra-fine pigment, a dispersant, a phosphor, a photosensitizer and a binder. The phosphor has a uniform distribution along the thickness of the phosphor layer, and the pigment varies in content over the thickness of the phosphor layer. A method of forming the phosphor layer is based on existing phosphor layer processes and includes a reduced number of processing steps than a filter screen method, thereby markedly lowering the manufacturing costs. The phosphor layer can be used in a cathode ray tube, a plasma display panel, a field emission display, and an organic electroluminescent device.

Abstract: A display apparatus includes a face plate that constitutes a part of a vacuum envelope, a phosphor layer formed on an inner surface of the face plate, and an electron beam source that emits electron beams to the phosphor layer. The face plate includes a light-emitting glass layer containing a light-emitting substance that emits light when electron beams are projected thereon. By extracting energy of electron beams, which have reached the face plate, as light, it is possible to reduce browning that occurs in the face plate and improve brightness of a display image significantly.

Abstract: A device for generating ultraviolet radiation by an excimer discharge is equipped with an at least partly UV-transparent discharge vessel whose discharge space is filled with a gas filling. The device includes electrodes for triggering and maintaining the excimer discharge in the discharge space. The device further has a coating that contains a phosphor including a host lattice and neodymium(III) as an activator.

Abstract: A quantum-splitting fluoride-based phosphor comprises gadolinium, at least a first alkali metal, and a rare-earth metal activator. The phosphor is made in a solid-state method without using HF gas. The phosphor can be used alone or in conjunction with other phosphors in light sources and displays wherein it can be excited by VUV radiation, and increases the efficiency of these devices.

Abstract: A photonic structure for “white” light generation by phosphors under the excitation of a LED. The photonic structure mounts the LED and an optically transparent nanocomposite matrix having dispersed therein phosphors which will emit light under the excitation of the radiation of the LED. The phosphors dispersed in the matrix may be nanocrystalline, or larger sized with the addition of non light emitting, non light scattering nanoparticles dispersed within the matrix material so as to match the index of refraction of the matrix material to that of the phosphors. The nanocomposite matrix material may be readily formed by molding and formed into a variety of shapes including lenses for focusing the emitted light. A large number of the photonic structures may be arranged on a substrate to provide even illumination or other purposes.

Abstract: There is provided a radiation image conversion panel having a sufficient quantity of emitted light and high graininess. The radiation image conversion panel has a phosphor layer containing a stimulable phosphor and a binder. The phosphor layer has at least two layers, and an amount or weight of a binder to a stimulable phosphor in an uppermost layer of the phosphor layer is greater than that of a binder to a stimulable phosphor in other layer than the uppermost layer.

Abstract: A quantum-splitting phosphor has a formula of ADF5:Pr3+, wherein A is at least one alkaline-earth metal and D is at least one Group-IIIB metal. The phosphor is made in a solid-state method without using hazardous HF gas. The phosphor can be used alone or in conjunction with other phosphors in light sources and displays wherein it can be excited by VUV radiation, and increase the efficiency of these devices.

Abstract: A display device which includes, a display panel, a red emitting fluorescent film, a green emitting fluorescent film, and a blue emitting fluorescent film, each of the fluorescent films being formed on an inner surface of the display panel. The red emitting fluorescent film contains red fluorescent particles having an average particle diameter ranging from 6 to 12 ?m and covered with red pigment having an average particle diameter ranging from 1/100 to 1/10 of the average particle diameter of the red fluorescent particles, the red emitting fluorescent particles are formed of Y2O2S:Eu, a concentration of Eu in the red emitting fluorescent film is 60 ppm or less, and the x-value of luminescent chromaticity of the red emitting fluorescent film is not less than 0.620.

Abstract: The present invention provides a green emitting yttrium silicate phosphor, which has an improved temperature characteristic and life, and a cathode-ray tube using it. A green emitting yttrium silicate phosphor according to the present invention comprises a composition having the general composition (Y, Sc, Tb)2SiO5, wherein the mole ratio of Sc to the entire rare-earth element in the phosphor is 0.045<Sc/(Y+Sc+Tb)<0.17. Adding the above concentration range of Sc improves its temperature characteristic and life. It is more preferable that the concentration range is 0.07<Sc/(Y+Sc+Tb)<0.13.

Abstract: To provide a phosphor for an electron beam excitation with a small deterioration in an emission efficiency and capable of maintaining a high luminance, even when an excitation density of an electron beam for a phosphor excitation is increased. As raw materials, Ca3N2(2N), AlN(3N), Si3N4(3N), and Eu2O3(3N) are prepared, and the raw materials thus prepared are measured and mixed, so that a molar ratio of each element becomes (Ca+Eu):Al:Si=1:1:1. Then, the mixture thus obtained is maintained and fired for at 1500° C. for 3 hours, and thereafter crushed, to manufacture the phosphor having a composition formula Ca0.985SiAlN3:Eu0.015.