Abstract:
Phosphor and a plasma display device are provided whose deterioration in brightness of phosphors and a degree of change in chromaticity are alleviated and whose discharge characteristics are improved and that has excellent initial characteristics. Phosphor of the present invention is an alkaline-earth metal aluminate phosphor containing an element M (where M denotes at least one type of element selected from the group consisting of Nb, Ta, W and B). In this phosphor, a concentration of M in the vicinity of a surface of the phosphor particles is higher than the average concentration of M in the phosphor particles as a whole. A plasma display device according to the present invention includes a plasma display panel in which a plurality of discharge cells in one color or in a plurality of colors are arranged and phosphor layers are arranged so as to correspond to the discharge cells in colors and in which light is emitted by exciting the phosphor layers with ultraviolet rays. The phosphor layers include blue phosphor, where the afore-mentioned phosphor is used as the blue phosphor.
Abstract:
An electrode assembly for the treatment of gases includes a dielectric housing having an interior area at least partially defined by an interior wall, the interior area being filled with a plasma-forming gas. A first conductor is coupled to the dielectric housing and at least partially extends into the interior area. Upon application of an electric potential to the first conductor, a conducting plasma is formed within the interior area. The conducting plasma contacts substantially all of the interior wall in a substantially uniform manner.
Abstract:
A flat fluorescent lamp includes a lamp body having a plurality of discharge spaces, an external electrode that is formed at both ends of the lamp body and intersects the discharge spaces, and an auxiliary electrode coupled to the lamp body and electrically connected to the external electrode. The external electrode includes a main electrode portion intersecting the discharge spaces and a first compensation electrode portion extending from the main electrode portion such that the first compensation electrode portion is formed at the outermost discharge spaces of the discharge spaces. The auxiliary electrode is formed at the outermost discharge spaces where the first compensation electrode portion is formed. Thus, a pin-hole defect of the flat fluorescent lamp may be prevented.
Abstract:
An external electrode fluorescent lamp is provided that includes a tube having electrode regions at end regions and a fluorescent region between the end regions. A phosphor layer is formed by dipping an open end of the tube into a solution containing phosphor material and permitting a capillary phenomenon to deposit the phosphor material on the inner surface of the tube in the corresponding electrode region and the fluorescent region. The phosphor material is then baked and the baked phosphor material in the electrode region is removed. A protection material is deposited on the phosphor layer and the inner surface of the tube and then baked to form a protection layer. One end is closed, a discharge gas filled in an inner space of the tube and the other end is then closed. External electrodes are then disposed on an outer surface of the tube in the electrode regions.
Abstract:
A flat fluorescent lamp includes a first substrate, a second substrate combined with the first substrate to define a plurality of discharge spaces, and a first external electrode formed on the outer surface of the second substrate to cross the discharge spaces. A first region of the second substrate corresponding to an outermost discharge space has a thickness thinner than that of a second region of the second substrate corresponding to remaining discharge spaces not disposed outermost. Thus, the outermost discharge space may have a compensated luminance, thereby improving luminance uniformity of light emitted from the flat fluorescent lamp and display quality of the liquid crystal display device including the flat fluorescent lamp.
Abstract:
A flat lamp for emitting light to a surface area of a liquid crystal display device includes a bottom having a channel uniformly crossing an entire surface of the bottom, an arc-discharging gas is disposed within the channel, a cover disposed upon an upper junction surface of the bottom, the cover is coated with a fluorescent material, and an electric field generating means for generating an electric field, wherein the electric field generating means is placed along opposing lateral sides of the channel.
Abstract:
In an external electrode type discharge lamp, a gadolinium oxide film obtained by baking solution containing at least one of gadolinium octate and gadolinium propionate is provided in a portion including at least a portion corresponding to an external electrode.
Abstract:
A plasma display device disclosed herein is capable of enhancing the contrast of external light, facilitating application of phosphor paste on the bottom of each space surrounded by lattice-like barrier ribs, and reducing a variation in the amount of the phosphor paste applied as much as possible. The lattice-like barrier ribs include lateral ribs extending along a first direction while being nearly in parallel to each other, and vertical ribs extending along a second direction different from the first direction while being nearly in parallel to each other. Each of the lateral ribs is composed of two or more rows of rib elements. Notches for communicating spaces surrounded by the vertical ribs and the lateral ribs to each other in the first direction and/or the second direction are formed at least in portions of the vertical ribs and/or the lateral ribs.
Abstract:
A method of forming fine partition walls by which fine partition walls with stable shape can be formed with good processing accuracy and at good grinding efficiency by a jet processing technique, a method of producing a planar display device by application of the method, and an abrasive for jet processing to be used in these methods, are disclosed. The fine partition walls are formed on the surface of a substrate, by jet processing using an abrasive comprised of a powder of calcium carbonate coated with silicone on the surfaces thereof. Each of the particles constituting the abrasive has a three-dimensional shape comprised of a stack of different-sized triangular or more-angular polygonal layers. The maximum particle diameter of the abrasive is not more than ½ times the width (W1) of the fine partition walls, and the mean particle diameter of the abrasive is not more than ⅕ times the width (W1) of the fine partition walls. In addition, the maximum particle diameter of the abrasive is not more than 10 μm. The pitch (P1) of the fine partition walls (24) is not more than 150 μm, the width (W1) of the fine partition walls (24) is not more than 50 μm, and the height (H1) of the fine partition walls (24) is not more than 300 μm. The thickness of a resist film (30) is not more than 1.2 times the width (W1) of the fine partition walls (24).
Abstract:
A display member, particularly a plasma display member, can be produced by a process comprising applying a paste which comprises a urethane compound and inorganic fine particles onto a substrate and then firing the paste. The display member has a post-firing pattern without any defect.