Abstract: A light emitting composition, light source device, and display device are provided. The light emitting composition has a phosphor, including a glass layer containing at least silicon (Si) and oxygen (O) formed on the surface of the phosphor. Exposed regions of the phosphor are made discrete by the glass layer.

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: Disclosed herein is a lighting device including a blue light-emitting element adapted to emit a blue light beam; and a green phosphor layer which is disposed apart from the blue light-emitting element and can function as a light diffusion layer, the green phosphor layer including a green phosphor adapted to emit green fluorescence when excited by the blue light beam, the green phosphor having a refractive index of 1.49 or more and a quantum efficiency of 79% or more.

Abstract: 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 concentration of europium is in the range of 1 to 9 mole percent; 0?x?1, 0?y?1, and x+y?1; 0?m?1, 0?n?1, m+n?1, and 2.9?a?5.9; and a main absorption wavelength range of the excitation is selected either a first wavelength range that overlaps the entirety of a reference wavelength range and extends to the shorter wavelength side or a second wavelength range that overlaps the entirety of the reference wavelength range and extends to the longer wavelength side according to the value a.

Abstract: A display device capable of expressing a particularly superior red color, for example, a red color of the sRGB standard, is provided. A display device 1 is composed of a red fluorescent body in which the red chromaticity point (xR, yR) satisfies xR?20.640 and yR?0.330, and a green fluorescent body.

Abstract: A phosphor includes (Sr1?x, Bax)3SiO5 with 1>x?0.1 as a base material and europium (Eu) as an activator. The emission center wavelength of the phosphor is controlled to be 600 nm or more on the basis of the composition ratio of Sr, Ba, and Eu.

Abstract: An illuminating device includes a fluorescent lamp including a blue phosphor and a red phosphor applied on an inner surface, the fluorescent lamp emitting blue light and red light from the blue phosphor and the red phosphor, respectively; and a green phosphor layer disposed outside the fluorescent lamp, the green phosphor layer containing a green phosphor containing Eu2+ or Ce3+ as a luminescent center. Green light emitted from the green phosphor excited by the blue light is mixed with the red light and the blue light so that white light is emitted from the illuminating device.

Abstract: A color liquid crystal display device assembly includes a color liquid crystal display device in which pixels each including at least a first subpixel, a second subpixel, and a third subpixel are arranged in a two-dimensional matrix, and a planar light source device which has light sources emitting first primary light corresponding to a first primary color of the light three primary colors and illuminating the color liquid crystal display device, and the liquid crystal display device has (A) second primary light emitting regions which emit second primary light when excited by the first primary light passing through the second subpixel, (B) third primary light emitting regions which emit third primary light when excited by the first primary light passing through the third subpixel, and (C) diffusion regions which diffuse the first primary light emitted from the light sources and passing through each first subpixel.

Abstract: A liquid crystal display capable of expanding a color reproduction range in the case where a cold cathode fluorescent lamp is used as a light source is provided. A green phosphor of the cold cathode fluorescent lamp includes BaMgAl10O17:Eu, Mn. The wavelength range of a green emission spectrum is located on a shorter wavelength side than that in the case where the green phosphor includes LaPO4:Ce, Tb, so the spectral width of the green emission spectrum is narrower. Therefore, an overlap between the wavelength ranges of green display light and red display light is reduced. Moreover, the spectral characteristics of blue display light (blue spectral characteristics) are set so as to satisfy predetermined conditional expressions. An overlap between the wavelength ranges of the green display light and the blue display light is also reduced.

Abstract: A phosphor includes Eu-activated YVO4:Eu doped Pith 10 ppm to 3,000 ppm of Tb and/or 50 ppm to 4,500 ppm of Sm. The luminance of light emitted by ultraviolet excitation is higher than that of undoped YVO4:Eu.

Abstract: A color liquid crystal display device capable of displaying a large color gamut is provided. A color liquid crystal display device 100 includes: a transmissive color liquid crystal panel 10 having a color filter and a backlight light source 20, in which the backlight light source 20 includes a fluorescent lamp 21 of large color reproduction range, a color filter 19 is made of color filters of three primary colors that select the wavelength to transmit red light, green light and blue light, and the filter of each color has a spectroscopic characteristic suitable for the spectrum of the fluorescent lamp 21 of large color reproduction range.

Abstract: Disclosed is a luminescent composition containing a fluorescent body having Eu2+as a luminescent center. The luminescent composition is obtained by a process including the steps of mixing a raw material of the fluorescent body with an organic compound having elements other than oxygen, and sintering the mixture to form the fluorescent body from the raw material.

Abstract: A light emitting composition, light source device, and display device are provided. The light emitting composition has a phosphor, including a glass layer containing at least silicon (Si) and oxygen (O) formed on the surface of the phosphor. Exposed regions of the phosphor are made discrete by the glass layer.

Abstract: A phospholuminescent composition is provided that includes a phosphor having a composition represented by SrxBa2-xSiO4:Eu, wherein 0?x?2. The phospholuminescent composition also includes a magnesium salt added to the phosphor. The composition has such excitation spectra that a value of an intensity at a wavelength of 440 nm or an intensity at a wavelength of 360 nm ranges from 0.82 to 0.85.

Abstract: A display apparatus is provided. The display apparatus includes a light source apparatus including a white light source, a blue fluorescent material, a green fluorescent material, a red fluorescent material, a green color filter, and a red color filter. A green chromaticity point of an output of green light to be omitted from the green fluorescent material and a red chromaticity point of an output of red light to be emitted from the red fluorescent material on a chromaticity coordinate system are interconnected by an imaginary straight line which passes only points which are equal to or higher than (0.300, 0.600) with regard to at least one of an x-axis component and a y-axis component of the chromaticity coordinate system.

Abstract: There is provided a fluorescent lamp having a construction where no difference is surely caused between a composition of the fluorescent particle mixture at one end portion of the glass tube and a composition of the fluorescent particle mixture at another end portion of the glass tube. The fluorescent lamp includes the glass tube and a fluorescent particle layer, formed on the inner surface of the glass tube, and including a fluorescent particle mixture of blue light emitting fluorescent particles having an average specific gravity of 4.0±0.4, red light emitting fluorescent particles having an average specific gravity of 4.0±0.4, and green light emitting fluorescent particles having an average specific gravity of 4.0±0.4, wherein the fluorescent particle mixture forming the fluorescent particle layer has a specific gravity of 4.0±0.4.

Abstract: A liquid crystal display capable of expanding a color reproduction range in the case where a cold cathode fluorescent lamp is used as a light source is provided. A green phosphor of the cold cathode fluorescent lamp includes BaMgAl10O17:Eu, Mn. The wavelength range of a green emission spectrum is located on a shorter wavelength side than that in the case where the green phosphor includes LaPO4:Ce, Tb, so the spectral width of the green emission spectrum is narrower. Therefore, an overlap between the wavelength ranges of green display light and red display light is reduced. Moreover, the spectral characteristics of blue display light (blue spectral characteristics) are set so as to satisfy predetermined conditional expressions. An overlap between the wavelength ranges of the green display light and the blue display light is also reduced.

Abstract: 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 concentration of europium is in the range of 1 to 9 mole percent; 0?x?1, 0?y?1, and x+y?1; 0?m?1, 0?n?1, and m+n?1; and a main absorption wavelength range of the excitation is selected either a first wavelength range that overlaps the entirety of a reference wavelength range and extends to the shorter wavelength side or a second wavelength range that overlaps the entirety of the reference wavelength range and extends to the longer wavelength side according to value a.

Abstract: This invention relates to coated particles used as phosphor particles for a phosphor screen of a display and a coating method for such particles. In the coating method of the present invention, first particles having a mean particle diameter of 3 to 10 ?m are fluidized, and slurry drops obtained by suspending second particles having a mean particle diameter of 5 to 500 nm are generated from a spray nozzle or the like. Then, the fluidized first particles and the slurry drops are collided with each other, and thereby the second particles are coated on the surfaces of the first particles. Thereby, this invention is able to present coated particles wherein each surface of the first particles is uniformly coated with the second particles that are more microscopic than the first particles.

Abstract: A color liquid crystal display device capable of displaying a large color gamut is provided. A color liquid crystal display device 100 includes: a transmissive color liquid crystal panel 10 having a color filter and a backlight light source 20, in which the backlight light source 20 includes a fluorescent lamp 21 of large color reproduction range, a color filter 19 is made of color filters of three primary colors that select the wavelength to transmit red light, green light and blue light, and the filter of each color has a spectroscopic characteristic suitable for the spectrum of the fluorescent lamp 21 of large color reproduction range.