Fujitsu Hitachi Plasma Display Limited

Fujitsu Corporation

Hitachi, Ltd.

Hitachi Plasma Patent Licensing Co., Ltd.

Hitachi Plasma Licensing Co., Ltd.

Hitachi Maxell, Limited

Hitachi Consumer Electronics Co., Ltd.

Noriaki Setoguchi

Yoshikazu Kanazawa

Shigeharu Asao

Tomokatsu Kishi

Takahiro Takamori

Eiji Ito

Akihiro Takagi

Hitoshi Hirakawa

Takayuki Shimizu

Takashi Shiizaki

Yuji Kobayashi

Tadatsugu Hirose

Shigeki Kameyama

Koji Ohira

Masahiro Sawa

Seiki Kurogi

A method is provided for driving a plasma display panel having parallel first and second electrodes, third electrodes crossing the first and second electrodes, and discharge cells with electrodes crossing mutually in the form of a matrix. The method includes a reset period during which distribution of wall charges in the discharge cells is uniformed, an addressing period during which wall charges are produced in the discharge cells according to display data, and a sustain discharge period during which sustain discharge is induced in discharge cells in which wall charges are produced during the addressing period. The driving method includes during the reset period, in lines defined by the first and second electrodes, applying a first pulse, in which an applied voltage varies with time to induce first discharge, and applying a second pulse in which an applied voltage varies with time to induce second discharge as an erase discharge.

Method for driving plasma display panel

Disclosed is a method for driving a plasma display panel in which a plurality of first electrodes and second electrodes are arranged parallel to each other, a plurality of third electrodes are arranged to cross the first and second electrodes, and discharge cells defined with areas in which the electrodes cross mutually are arranged in the form of a matrix. According to the driving method, a reset period is a period during which the distribution of wall charges in the plurality of discharge cells is uniformed. An addressing period is a period during which wall charges are produced in the discharge cells according to display data. A sustain discharge period is a period during which sustain discharge is induced in the discharge cells in which wall charges are produced during the addressing period. The driving method in accordance with the present invention comprises a step of applying a first pulse in which an applied voltage varies with time so as to induce first discharge in the lines defined by the first and second electrodes, and a step of applying a second pulse in which an applied voltage varies with time so as to induce second discharge as erase discharge in the lines defined by the first and second electrodes. These steps are carried out during the reset period.

A method for driving a plasma display panel in which a plurality of first and second electrodes are arranged adjacently each other, a plurality of third electrodes are arranged to cross the first and second electrodes, the plasma display panel having a reset period, an address period, and a sustain discharge period is provided. The method includes in the reset period, applying to the second electrodes a first waveform voltage, whose applied potential increases with time, then applying to the second electrodes a second waveform voltage, whose applied potential decreases with time. The method includes when applying the first waveform voltage, a first constant voltage is applied to the first electrodes, and a second constant voltage higher than the first constant voltage is applied to the third electrodes and when applying the second waveform voltage, a third constant voltage is applied to the first electrodes, and a fourth constant voltage lower than the third constant voltage is applied to the third electrodes.

A PDP (Plasma Display Panel) comprising a front substrate structure (first substrate structure) in which two pairs of an X electrode and a Y electrode and a non-emission area therebetween are formed, and a plurality of light-shielding films formed with spacing from the X electrode and the Y electrode in the non-emission area. The light-shielding film contains a metal material common with a metal material forming the X electrode and the Y electrode. And, the light-shielding film is formed in an island-shape having spacing from a neighboring barrier rib formed to a rear substrate structure (second substrate structure). According to the above structure, the area of the light-shielding film which may cause a capacitance-coupled portion with the X electrode, the Y electrode, or an address electrode can be made small, thereby suppressing capacitance coupling even when a conductive material is used to the light-shielding film.

Plasma display panel and method of manufacturing the same

A driving circuit of a plasma display panel is provided in which a display cell including a first electrode and a second electrode is selected to light up, for applying a first voltage Vsto the first electrode and a second voltage Vsto the second electrode adjacent to the first electrode to cause a sustain discharge between the first and second electrodes. The driving circuit generates a sustain discharge voltage such that, during the sustain discharge between the first and second electrodes, an applied voltage Vc to a third electrode adjacent to the first electrode opposite to the second electrode falls within a range Vs&#x2266;Vc&#x3c;Vs, and, in this case, when a display cell including the third electrode is selected to light up, the polarity of a wall charge formed on the third electrode becomes positive.

Driving circuit of plasma display panel and plasma display panel

A plasma display panel includes first and second substrates opposed to each other for defining a space filled with discharge gas, a screen made up of cells arranged in the row and column directions, display electrodes arranged on the first substrate, the display electrodes extending in the row direction, band-like partitions arranged in parallel on the second substrate for dividing the gas filled space into columns, and fluorescent material layers sticking to side faces of the partitions and inner surfaces between the partitions on the columns, each of the fluorescent material layers extending across cells. The thickness of the fluorescent material layer at a part sticking to the side face of the partition and overlapping with the display electrodes is designed to be smaller than the thickness at a part sticking to the side face of the partition in the vicinity of the surface discharge gap.

Plasma display panel and method for manufacturing the same

The plasma display apparatus, in which the light emission efficiency is improved, has been disclosed. The fourth electrodes, which extend in the same direction of the first electrodes (X electrode) and the second electrodes (Y electrodes) and are exposed into the discharge space, are provided between the first and the second electrodes where the sustaining discharge is carried out, and when the sustain action is carried out, the fixed voltage between the voltage applied to the first electrode and that applied to the second electrode is applied to the fourth electrode provided between the first and the second electrodes where the sustain action is carried out in order to make the electric field between the first and the second electrodes uniform.

Plasma display apparatus

A plasma display includes address electrodes for scanning and addressing display cells, and scan electrodes for establishing an address discharge between the address electrodes and the scan electrodes by addressing. The display also includes common electrodes for establishing a sustain discharge between the scan electrodes and the common electrodes to display an image at the display cells, and a scan driver for supplying a voltage to the scan electrodes so as to scan display cells upon addressing during divided periods. Upon addressing, the scan driver varies the potential of a scan electrode adjacent to the scan electrode that corresponds to the addressed address electrode.

Growing community of inventors

Kagoshima, Japan

Noriaki Setoguchi