摘要:
The present invention provides a plasma display panel, comprising a rear substrate provided with ribs defining discharge cells, address electrodes and phosphor layers, and a front substrate provided with transparent electrodes extending in a direction perpendicular to the address electrodes, a transparent dielectric layer and a protective layer, discharge being brought about within the discharge cell formed between the rear substrate and the front substrate to excite the phosphor contained in the phosphor layer so as to cause the phosphor to emit a visible light. In this plasma display panel, the phosphor particles forming the phosphor layer have an average particle size of 0.1 to 5 .mu.m and a ratio of the largest curvature to the smallest curvature of at most 1.5. Also, the magnitude of the irregularities on the surface of the phosphor particle is at most 5% of the diameter of the phosphor particle.
摘要:
A method of manufacturing a phosphor material, which comprises the steps of, generating thermal plasma, supplying a conductive material into the thermal plasma so as to evaporate the conductive material, supplying phosphor particles into the thermal plasma so as to allow the conductive material to adhere onto the surface of the phosphor particles, and cooling the phosphor particles having the conductive material adhered thereon. By making use of this method, it is possible to manufacture a phosphor material comprising a phosphor particle and a conductive layer formed on the surface of the phosphor particle, wherein the ratio between the minor axis and the major axis of the phosphor material is 1.5 or less.
摘要:
A raw material prepared by washing a phosphor powder containing a phosphor host material and an activator with an acid solution, followed by drying the washed powder, is heated within a thermal plasma at a temperature which permits partially melting the phosphor, followed by cooling and subsequently subjecting the resultant phosphor at 1200.degree. to 1700.degree. C., thereby manufacturing spherical phosphor particles having a concentration gradient in a radial direction.
摘要:
Disclosed is a phosphor suitable for use in a cathode-ray tube, a fluorescent lamp, a radiation intensifying screen, which comprises transparent spherical particles having an average particle size of 0.5 to 20 .mu.m and a ratio of the major diameter to the minor diameter of individual particles in the range of 1.0 to 1.5, and ultrafine particles having a diameter of 0.2 .mu.m less in an amount of 5 wt % or less.
摘要:
A light emitting device according to one embodiment includes a light emitting element that emits light having a wavelength of 380 nm to 470 nm; a CASN first red phosphor that is disposed on the light emitting element; a sialon second red phosphor that is disposed on the light emitting element; and a sialon green phosphor that is disposed on the light emitting element.
摘要:
A light emitting device according to one embodiment includes: a board; plural first light emitting units each including a first light emitting element and a first fluorescent layer formed on the first light emitting element having a green phosphor; plural second light emitting units each including a second light emitting element and a second fluorescent layer formed on the second light emitting element having a red phosphor; the second fluorescent layers and the first fluorescent layers being separated in a non-contact manner with gas interposed there between; and plural third light emitting units each including a third light emitting element and a resin layer formed on the third light emitting element having neither a green phosphor nor the red phosphor, the third light emitting units being disposed between the first light emitting units and the second light emitting units.
摘要:
A light emitting device according to one embodiment includes a light emitting element that emits light having a wavelength of 380 nm to 470 nm; a CASN first red phosphor that is disposed on the light emitting element; a sialon second red phosphor that is disposed on the light emitting element; and a sialon green phosphor that is disposed on the light emitting element.
摘要:
A semiconductor light-emitting device includes a semiconductor light-emitting element emitting light in a region ranging from ultraviolet to visible, and a visible-light luminescent element absorbing light emitted from the semiconductor light-emitting element and outputting visible light. The visible-light luminescent element includes a substrate, a light-reflecting layer formed on the substrate and containing light scattering particles, and a luminescent layer containing phosphor particles. The luminescent layer absorbs light emitted from the semiconductor light-emitting element and output visible light. The luminescent layer further absorbs light that is emitted from the semiconductor light-emitting element, arrives at and is reflected from the light scattering particles, and output the visible light.
摘要:
The embodiment provides a process for production of an oxynitride fluorescent substance. An compound containing In or Ga is adopted in the process as a material thereof. The red fluorescent substance produced by the process can be combined with a semiconductor light-emitting element, so as to be used in a light-emitting device or a light-emitting module.
摘要:
A light emitting device according to one embodiment includes: a board; plural first light emitting units each including a first light emitting element and a first fluorescent layer formed on the first light emitting element having a green phosphor; plural second light emitting units each including a second light emitting element and a second fluorescent layer formed on the second light emitting element having a red phosphor; the second fluorescent layers and the first fluorescent layers being separated in a non-contact manner with gas interposed there between; and plural third light emitting units each including a third light emitting element and a resin layer formed on the third light emitting element having neither a green phosphor nor the red phosphor, the third light emitting units being disposed between the first light emitting units and the second light emitting units.