摘要:
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.
摘要:
The plasma display panel of the present invention has, for achieving high luminance and high reliability, a plurality of discharge spaces formed between a front panel and a back panel that are disposed to oppose each other, and phosphor layers, formed in the discharge spaces, each including phosphor particles of one of blue, red and green colors, wherein the phosphor particles of at least one of blue, red and green colors included in the phosphor layer are flake-like particles.
摘要:
A plasma display device has a first plate and a second plate which face each other with a discharge space therebetween, and a sealing member which is provided between the first and second plates to seal the discharge space at edges of the first and second plates. A plurality of electrodes are formed on the inner major surface of the first or second plate. An electrode diffusion preventive layer is formed in each area where the plurality of electrodes cross over the sealing member, so as to avoid direct contact between the plurality of electrodes and the sealing member. As a result, problems such as breaking of the electrodes can be avoided. This construction is especially effective when the electrodes contain Ag.
摘要:
The object of the present invention is to greatly improve PDPs in luminance and luminous efficiency, compared to conventional PDPs. In order to achieve the object, the panel structure is set such that an equivalent field strength of at least 37V/cm·KPa is generated in selected discharge spaces in which the electric charge has been accumulated on their dielectric layer, when a discharge sustaining voltage is applied between a pair of display electrodes. To achieve such a high equivalent field strength as 37V/cm·KPa, adequate setting of the following factors of the panel structure is effective: a gap between a pair of display electrodes, a thickness and a permittivity of a dielectric layer, and an amount of Xe filled in discharge spaces.
摘要:
A glass substrate containing Na or K and being fabricated by a floating method has a surface coated with a metal oxide layer having a thermal expansion coefficient close to that of the glass substrate. Ag electrodes are provided on the metal oxide layer. This provides a plasma display panel with high image quality since the panel is prevented from migration of Ag between electrodes, thus having the glass substrate prevented from being tinted yellow. As a result, the plasma display panel at high quality can be implemented using the glass substrate.
摘要:
The present invention intends to provide a manufacturing method for a plasma display panel, so as to overcome problems associated with a withstanding voltage of a dielectric glass layer. Glass particles have angular shapes after grinding with a grinder, but as the surface of them has been melted, they are converted into spheroids. Those glass particles can get wet evenly, so that a binder evenly adheres to the surface of a glass particle when a glass paste including the glass particles is applied to the surface of a substrate. In this case, there is a scarce possibility for a gas, generated by baking the binder, to remain in the form of bubbles in a formed dielectric glass layer. There are fewer bubbles remaining in a completed dielectric glass layer than in a dielectric glass layer than in a glass layer made from angular glass particles.
摘要:
The object of this invention is to provide a plasma display panel in which an aging process essential to the manufacturing process generates minimal phosphor deterioration, enabling a relatively high luminous efficiency and high quality color production to be produced. To achieve this object, the aging process takes place while gas generated inside the panel is evacuated. Alternatively, after completion of the aging process, the phosphor of the whole panel is heated to restore heat deterioration.
摘要:
The present invention intends to provide a manufacturing method for a PDP that can continuously apply phosphor ink for a long time and can accurately and evenly produce phosphor layers even when the cell construction is very fine. To do so, phosphor ink is continuously expelled from a nozzle while the nozzle moves relative to channels between partition walls formed on a plate so as to scan and apply phosphor ink to the channels. While doing so the path taken by the nozzle within each channel between a pair of partition walls is adjusted based on position information for the channel. When phosphor particles is successively applied to a plurality of channels, phosphor ink is continuously expelled from the nozzle even when the nozzle is positioned away from the channels. The phosphor ink is composed of: phosphor particles that have an average particle diameter of 0.5 to 5 &mgr;m; a mixed solvent in which materials selected from a group consisting of terpineol, butyl carbitol acetate, butyl carbitol, pentandiol, and limonene are mixed; and a binder that is an ethylene group polymer or ethyl cellulose containing at least 49% of ethoxy group (—OC2H5) cellulose molecules. After dispersion a charge-removing material is added to the phosphor ink.
摘要:
A PDP does not suffer from dielectric breakdown even though a dielectric layer is thin, with the problems of conventional PDPs, such as cracks appearing in the glass substrates during the production of the PDP being avoided. To do so, the surface of silver electrodes of the PDP is coated with a 0.1-10 .mu.m layer of a metallic oxide on whose surface OH groups exist, such as ZnO, ZrO.sub.2, MgO, TiO.sub.2, Al.sub.2 O.sub.3, and Cr.sub.2 O.sub.3. The metallic oxide layer is then coated with the dielectric layer. It is preferable to form the metallic oxide layer with the CVD method. The surface of a metallic electrode can be coated with a metallic oxide, which is than coated with a dielectric layer. The dielectric layer can be made of a metallic oxide with a vacuum process method or the plasma thermal spraying method. The dielectric layer formed on electrodes with the CVD method is remarkably thin and flawless. When the dielectric layer is formed with the vacuum process method or the plasma spraying method, warping and cracks conventionally caused by baking the dielectric layer are prevented. Here, borosilicate glass including 6.5% or less by weight of alkali can be used as the glass substrate.
摘要翻译:即使电介质层较薄,PDP也不会受到电介质击穿,同时避免了在制造PDP期间在玻璃基板中出现的常规PDP的问题。 为此,PDP的银电极的表面涂覆有其表面存在OH基的金属氧化物如ZnO,ZrO 2,MgO,TiO 2,Al 2 O 3和Cr 2 O 3的0.1-10μm层。 然后用电介质层涂覆金属氧化物层。 优选用CVD法形成金属氧化物层。 金属电极的表面可以涂覆有被涂覆有介电层的金属氧化物。 电介质层可以用真空处理方法或等离子体热喷涂方法由金属氧化物制成。 用CVD法形成在电极上的电介质层非常薄且无瑕疵。 当使用真空处理方法或等离子喷涂方法形成电介质层时,防止了通常由电介质层烘烤引起的翘曲和裂纹。 这里可以使用包含6.5重量%以下的碱的硼硅酸盐玻璃作为玻璃基板。
摘要:
An optical component mounting substrate which comprises grooves for holding optical fibers, other grooves for optical components being inserted and optical waveguides is produced with a press molding process. A mold having convex and/or concave surface profiles which are corresponding to the grooves and the optical waveguides to be formed on a surface of the optical component mounting substrate is used as a die in the press molding process. The surface profiles of the mold are precisely transferred onto the surface of a transparent glass base substrate, thereby forming the optical component mounting substrate having a desired surface configuration including the grooves and the optical waveguides. Optical fibers are aligned along the grooves and fixed by a light-curing adhesive. Since a press molding process is applied, the optical component mounting substrate can be produced easily at a low cost with mass production and also can attain many advantages such as small coupling loss, small crosstalk, high positional accuracy, excellent reproducibility and high reliability.