Patent application number | Description | Published |
20090309496 | PLASMA DISPLAY PANEL AND ITS MANUFACTURING METHOD - A PDP and a manufacturing method for the PDP are provided, the PDP being capable of suppressing discharge delay due to improved discharge properties of a protective layer, and exhibiting superior image display performance despite having a high-definition cell structure. A magnesium oxide powder layer ( | 12-17-2009 |
20100109984 | PLASMA DISPLAY DEVICE - Protective layer of front plate of the plasma display panel is formed of base protective layer and particle layer. Base protective layer is a thin film of metal oxide containing at least one of magnesium oxide, strontium oxide, calcium oxide, and barium oxide. Particle layer is formed in a manner that single-crystal particles of magnesium oxide having a peak of emission intensity at 200-300 nm two times or higher than another peak of emission intensity at 300-550 nm in the emission spectrum in cathode luminescence emission are stuck on base protective layer. The panel driving circuit drives the panel with a subfield structure in which the subfields are temporally disposed so that magnitude of luminance weight has monotonous decrease from a subfield where the all-cell initializing operation is performed to a subfield where the next all-cell initializing operation is performed. | 05-06-2010 |
20100118004 | PLASMA DISPLAY DEVICE - A protective layer of a plasma display panel has a base protective layer formed of a thin film of a metal oxide, and a particle layer. The particle layer is formed by sticking, to the base protective layer, single-crystal particles of magnesium oxide such that the emission intensity of a peak at 200 nm to 300 nm is at least twice the emission intensity of a peak at 300 nm to 550 nm in an emission spectrum of cathode luminescence light emission. A panel driving circuit drives the panel in a manner that a second subfield group having a plurality of subfields is temporally disposed after a first subfield group having a plurality of subfields to form one field period. Each subfield of the first subfield group has initializing period (Ti), address period (Tw) for forming wall charge to cause a sustain discharge, and sustain period (Ts). Each subfield of the second subfield group has address period (Tw) for erasing wall charge necessary for causing a sustain discharge, and sustain period (Ts). | 05-13-2010 |
20100118015 | PLASMA DISPLAY DEVICE - Protective layer of a plasma display panel has base protective layer and particle layer. Base protective layer is formed of a thin film of metal oxide containing at least one of magnesium oxide, strontium oxide, calcium oxide, and barium oxide. Particle layer is formed by sticking, to base protective layer, single crystal particles of magnesium oxide where the peak at 200 to 300 nm is two or more times that at 300 to 550 nm in a cathode luminescence emission spectrum. The panel driving circuit causes initializing discharge for producing wall charge in the first subfield, of a plurality of subfields, causes address discharge for erasing wall charge in address periods of the plurality of subfields, and drives the panel. | 05-13-2010 |
20100134453 | PLASMA DISPLAY DEVICE - Protective layer ( | 06-03-2010 |
20100134455 | PLASMA DISPLAY DEVICE - In a plasma display panel, protective layer of front plate has base protective layer and particle layer. The base protective layer is formed of a thin film of a metal oxide containing at least one of magnesium oxide, strontium oxide, calcium oxide, and barium oxide. The particle layer is formed by sticking, to base protective layer, single-crystal particles of magnesium that have an NaCl crystal structure surrounded by specified two type orientation faces of a (100) face and a (111) face, or by specified three type orientation faces of a (100) face, a (110) face, and a (111) face. A panel driving circuit drives the panel in a manner that an initializing discharge for forming wall charge is caused in the first subfield of a plurality of subfields, and an address discharge for erasing the wall charge is caused in address periods of the plurality of subfields. | 06-03-2010 |
20100177084 | PLASMA DISPLAY DEVICE - A plasma display device has a crystal particle made of MgO single crystal where the cathode luminescence emission spectrum exhibits a desired characteristic, and displays an image by a driving method in the initializing period. The initializing period has the first half for applying the voltage, which gradually increases from a first voltage and to a second voltage, to a second electrode, and the latter half for applying the voltage, which gradually decreases from a third voltage and to a fourth voltage. | 07-15-2010 |
20100181909 | PLASMA DISPLAY PANEL - A plasma display panel demonstrating excellent image display performance by suppressing generation of initialization bright points through modification of the phosphor layer, and by eliminating variation in discharge characteristics between the discharge cells of each color. In addition to solving these problems, the luminance of the plasma display panel is also enhanced by using the ultraviolet rays emitted in the discharge space in order to promote the production of visible light on the front panel side. Specifically, the phosphor layer ( | 07-22-2010 |
20100214329 | PLASMA DISPLAY DEVICE - The protective layer of the plasma display device is formed of a base protective layer and a particle layer. The base protective layer is a thin film of magnesium oxide containing at least one of magnesium oxide, strontium oxide, calcium oxide, and barium oxide. The particle layer is formed in a manner that magnesium-oxide single-crystal particles, which have a structure surrounded by the specified two-type orientation face formed of (100) and (111) faces or the specified three-type orientation face formed of (100), (110), and (111) faces, are stuck to the base protective layer. The panel driving circuit drives the panel in a manner that one field period is formed of a first subfield group having a plurality of subfields and a second subfield group having a plurality of subfields temporally disposed after the first subfield group. Each subfield of the first subfield group has initializing period Ti, address period Tw for forming wall charge to generate a sustain discharge, and sustain period Ts. On the other hand, each subfield of the second subfield group has address period Tw for erasing wall discharge necessary for generating a sustain discharge and sustain period Ts. | 08-26-2010 |
20100259466 | PLASMA DISPLAY PANEL - The present invention aims to improve efficiency of a PDP by providing a material suitable for improving a secondary electron emission coefficient of the PDP. In order to achieve the aim, in a PDP | 10-14-2010 |
20110175554 | PLASMA DISPLAY PANEL - The present invention aims to provide a plasma display panel that can be driven at low voltage and can offer favorable image display performance. In order to achieve the aim, on a surface of the front panel | 07-21-2011 |
20110193474 | PLASMA DISPLAY PANEL - A material suitable for improving the secondary electron emission coefficient of PDPs is provided to thereby enable a PDP to operate at a higher efficiency. Provided is a PDP ( | 08-11-2011 |
20110198985 | CRYSTALLINE COMPOUND, MANUFACTURING METHOD THEREFOR AND PLASMA DISPLAY PANEL - The present invention aims to drive a PDP at low voltage by providing a material with a high secondary electron emission coefficient under a practical manufacturing condition. In order to achieve the aim, a crystalline oxide selected from the group consisting of CaSnO | 08-18-2011 |
20130015762 | PLASMA DISPLAY PANELAANM Fukui; YusukeAACI OsakaAACO JPAAGP Fukui; Yusuke Osaka JPAANM Nishitani; MikihikoAACI NaraAACO JPAAGP Nishitani; Mikihiko Nara JPAANM Sakai; MasahiroAACI KyotoAACO JPAAGP Sakai; Masahiro Kyoto JPAANM Okafuji; MichikoAACI OsakaAACO JPAAGP Okafuji; Michiko Osaka JPAANM Okui; YayoiAACI OsakaAACO JPAAGP Okui; Yayoi Osaka JPAANM Honda; YosukeAACI NaraAACO JPAAGP Honda; Yosuke Nara JPAANM Yamauchi; YasuhiroAACI OsakaAACO JPAAGP Yamauchi; Yasuhiro Osaka JPAANM Inoue; OsamuAACI OsakaAACO JPAAGP Inoue; Osamu Osaka JPAANM Asano; HiroshiAACI OsakaAACO JPAAGP Asano; Hiroshi Osaka JP - There is provided a PDP in which the structure of the periphery of a protective film is improved, excellent secondary electron emission property is exhibited, and improved efficiency and increased life can be expected. There is further provided a PDP in which occurrence of a discharge delay at the time of driving is prevented, and exhibition of high quality image display performance can be expected even in a high definition PDP that is driven at a high speed. Specifically, a crystalline film containing Sr in CeO | 01-17-2013 |
20130119381 | ULTRAVIOLET LIGHT EMITTING MATERIAL, METHOD FOR PRODUCING SAME, AND LIGHT EMITTING ELEMENT USING SAME - The present invention provides a zinc oxide-based ultraviolet light emitting material showing intense emission in the ultraviolet region. The present invention is an ultraviolet light emitting material containing: zinc and oxygen as main components; at least one element selected from the group consisting of aluminum, gallium, and indium, as a first sub-component; and phosphorus as a second sub-component. This material has n-type conductivity. | 05-16-2013 |
20130161561 | METHOD OF PRODUCING ULTRAVIOLET LIGHT EMITTING PHOSPHOR MATERIAL - The present invention is a method of producing an ultraviolet light emitting phosphor material. This method includes a step of heat-treating a composition containing zinc and oxygen as main components and at least one selected from the group consisting of aluminum, gallium and indium as a sub-component, in the presence of at least two coexisting substances selected from the group consisting of zinc oxide, gallium oxide and phosphorus oxide under a non-oxidizing atmosphere. | 06-27-2013 |