Matsushita Electric Industrial Co., Ltd.

Panasonic Corporation

Wako Pure Chemical Industries, Inc.

Matsushita Electrical Industrial Co., Ltd.

Matsushita Electric Co., Ltd.

Fujitsu Fip Corporation

Masaki Aoki Et Al.

Hiroyuki Kawamura

Masaki Aoki

Shigeo Suzuki

Mitsuhiro Ohtani

Junichi Hibino

Kazuhiko Sugimoto

Mitsuhiro Otani

Hiroyuki Kado

Keisuke Sumida

Atsushi Fukui

Eiji Fujii

Hideo Torii

Ryuichi Murai

Kanji Nishii

Hiroyoshi Tanaka

Yutaka Nishimura

Nobuyuki Kirihara

Yasuhisa Ishikura

Katsuyoshi Yamashita

Takashi Inami

Hiroshi Setoguchi

Masami Itoh

Kanako Miyashita

Yoshinori Tanaka

Masami Ito

Akira Ueno

Emi Kawahara

Seiji Takeda

Tsuguo Nakajima

Tsuyoshi Kimura

Kouji Itoh

Syunsuke Nishimura

Yasuko Nishimura

The first object of the present invention is to provide a PDP with improved panel brightness which is achieved by improving the efficiency in conversion from discharge energy to visible rays. The second object of the present invention is to provide a PDP with improved panel life which is achieved by improving the protecting layer protecting the dielectrics glass layer. To achieve the first object, the present invention sets the amount of xenon in the discharge gas to the range of 10% by volume to less than 100% by volume, and sets the charging pressure for the discharge gas to the range of 500 to 760 Torr which is higher than conventional charging pressures. With such construction, the panel brightness increases. Also, to achieve the second object, the present invention has, on the surface of the dielectric glass layer, a protecting layer consisting of an alkaline earth oxide with (100)-face or (110)-face orientation. The protecting layer, which may be formed by using thermal Chemical Vapor Deposition (CVD) method, plasma enhanced CVD method, or a vapor deposition method with irradiation of ion or electron beam, will have a high sputtering resistance and effectively protect the dielectrics glass layer. Such a protecting layer contributes to the improvement of the panel life.

Method of producing plasma display panel with protective layer of an alkaline earth oxide

The present invention relates to a distribution aiding system, a distribution aiding server, a distribution aiding method, and a distribution aiding program capable of selling articles without individual trading conditions being known to a maker, other users or other dealers, and is so configurated that a user retrieves or selects a necessary article, the user registers order information according to the selected article, and a dealer in charge of the user registers order-acceptance condition information to be added to the order information, and notifies the user of the order-acceptance condition information.

Distribution aiding method, distribution aiding server, recording medium, distribution aiding program, and dealer terminal

Phosphor layers (G,B, andR) are made of a combination of: blue and green phosphors that are positively charged on their surfaces and baked in an oxygen-nitrogen atmosphere to reduce oxygen vacancy, and that have a &#x3b2;-alumina crystal structure; and a red phosphor made of an yttrium oxide compound. Uniformly forming such phosphor layers on the wall surfaces of barrier ribs () provides equal charge characteristics of the phosphors of respective colors, reduces oxygen vacancy in the phosphors, and inhibits adsorption of various gases in the panel production process. This can stabilize the discharge characteristics and prevent luminance degradation at driving the panel.

Plasma display with phosphors containing a &#x3b2;-alumina crystal structure

A phosphor in which water adsorption onto the surface of a blue phosphor is inhibited, luminance degradation and chromaticity shift of the phosphor is decreased, or discharge characteristics thereof is improved, and a plasma display device using the phosphor. In phosphor layers used for plasma display, selectively coating at least the vicinity of the sides of planes of mirror symmetry containing Ba atoms in a blue phosphor with an oxide or a fluorine-containing oxide inhibits water adsorption onto the surface of the blue phosphor, decreases luminance degradation and chromacity shift of a phosphor, or improves discharge characteristics thereof.

Ba-based blue phosphor material provided with a particle surface coating and plasma display panel using the same

A method of manufacturing a plasma display device which prevents the brightness of a phosphor layer from lowering is disclosed, and the method can form the phosphor layer in a stable manner because a nozzle is free from clogging. At least one of the phosphor layers has a green phosphor layer containing green phosphor having zero or positive charges and a crystal structure of ZnSiO:Mn. Green phosphor ink, whose major ingredient is the green phosphor, is applied through the nozzle to discharging cells, thereby forming the green phosphor layer. The green phosphor ink is formed of green phosphor powder coated with an oxide having positive charges, or the ink is formed by crushing the green phosphor powder originally having negative charges and a crystal structure of ZnSiO:Mn such that the powder changes to have positive charges.

Plasma display device and production method therefor

A plasma display device exhibits suppressed luminance degradation of a phosphor, a suppressed change in chromaticity and improved discharge characteristics as a result of suppression of adsorption of water or hydrocarbon-containing gas on a surface of a blue phosphor. A blue phosphor layer used in the plasma display device is formed of a compound expressed by BaMgAlO:Euor BaSrMgAlO:Euand includes at least one element that is selected from Nb, Ta, Pr, P, As, Sb, Bi and Tm which substitutes for a part of its Al or Mg element.

Plasma display unit, phosphor and process for producing phosphor

The present invention aims to inhibit water adsorption onto the surface of a blue phosphor(blue fluorescent material), decrease luminance degradation and chromaticity shift of a phosphor, or improve discharge characteristics thereof. Used in a phosphor for a plasma display is a blue phosphor in which trivalent Eu ions substitute for part of divalent Eu ions. This substitution eliminates oxygen vacancy in the vicinity of layers containing Ba atoms (Ba&#x2014;O layers) in the blue phosphor, and thus inhibits water adsorption onto the surface of the blue phosphor, decreases luminance degradation and chromaticity shift of the phosphor, or improves discharge characteristics thereof.

Plasma display apparatus, fluorescent material, and fluorescent material manufacturing method

A plasma display device comprises blue phosphor which restricts adsorption of water and hydrocarbon gases to a surface thereof, reduces degradation of luminance and chromaticity change, and improves discharge characteristic. Among phosphor layers used for a plasma display, a blue phosphor layer comprises one of compounds symbolized by BaMgAlO:Euand BaSrMgAlO:Eu, of which phosphor contains 0.2 to 0.8 in number x of Eu atoms, and the Eu atoms comprises 25% to 85% concentration of bivalent Eu ions, and 15% to 75% concentration of trivalent Eu ions.

A plasma display device includes a blue phosphor composed of a compound represented by MeMgSiO:Eu (where, Me is at least calcium (Ca), strontium (Sr), or barium (Ba)). Concentration of bivalent Eu ions is 45 to 95% and concentration of trivalent Eu ions is 5 to 55%, of the europium (Eu) atoms contained in the blue phosphor layer. The plasma display device has less luminance degradation in a panel manufacturing process, high luminance, and long lifetime.

Plasma display unit

The present invention relates to a plasma display device apt to increase luminance of a phosphor layer and prevent degradation of a discharge characteristic, and to a phosphor used for the device. This plasma display device has a green phosphor having a crystal structure of ZnSiO:Mn, and a monovalent oxide is substituted for part of the green phosphor. The monovalent oxide is one or more of lithium oxide (LiO), sodium oxide (NaO), potassium oxide (KO), cesium oxide (CsO), rubidium oxide (RbO), copper oxide (CuO), and silver oxide (AgO). This structure allows reduction of oxygen defects occurring in the green phosphor, suppression of the luminance decrease of the green phosphor, and improvement of a discharge characteristic.

Phosphor and method for production thereof and plasma display device

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 &#x3bc;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 (&#x2014;OCH) cellulose molecules. After dispersion a charge-removing material is added to the phosphor ink.

Plasma display panel manufacturing method for manufacturing a plasma display panel with superior picture quality, a manufacturing apparatus, and a phosphor ink

A blue phosphor composing a blue phosphor player in a plasma display device has a crystal structure of BaEuMgAlOor BaEuSrMgAlO. In this blue phosphor, La substitutes for a proportion of Ba or Sr so as to achieve a high-luminance plasma display device with less luminance deterioration in panel manufacturing processes.

Plasma display unit including lanthnum substituted aluminate phosphor

The present invention inhibits water adsorption onto the surface of a blue phosphor, decreases luminance degradation and chromaticity shift of a phosphor, or improves discharge characteristics thereof. The blue phosphor is a compound represented by BaMgAlO:Euor BaSrMgAlO:Eu, wherein 0.03&#x2266;x&#x2266;0.25 and 0.1&#x2266;y&#x2266;0.5, and containing at least one of Ti, Zr, Hf, Si, Ge, Sn, and Ce substituting for part of one of elements Al and Mg.

Growing community of inventors

Osaka, Japan

Hiroyuki Kawamura