Fujitsu Hitachi Plasma Display Limited

Fujitsu Corporation

Hitachi Plasma Patent Licensing Co., Ltd.

Hitachi, Ltd.

Hitachi Maxell, Limited

Hitachi Plasma Licensing Co., Ltd.

Hitachi Consumer Electronics Co., Ltd.

Shigeharu Asao

Yoshikazu Kanazawa

Noriaki Setoguchi

Haruo Koizumi

Tomokatsu Kishi

Hitoshi Hirakawa

Shinsuke Tanaka

Toshio Ueda

Masanori Takeuchi

Kosaku Toda

Noriaki c/o Fujitsu Hitachi Plasma Disp Setoguchi

A plasma display apparatus and method are provided. The plasma display apparatus includes a plasma display panel in which first electrodes and second electrodes are arranged adjacently and third electrodes are arranged to cross the first and second electrodes. The method for driving a plasma display apparatus in which first electrodes and second electrodes are arranged adjacently and third electrodes are arranged to cross the first and second electrodes and in which one field comprises subfields having a reset period followed by an address period and a sustain period includes in a reset period, applying to second electrodes a voltage of a first waveform in which an applied voltage value increases according to a lapse of time and applying to second electrodes a voltage of a second waveform in which an applied voltage value decreases according to a lapse of time.

Plasma display apparatus and method of driving the plasma display apparatus

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 method of driving a PDP apparatus to sufficiently suppress the background light emission and improve the dark room contrast, in which first electrodes and second electrodes are arranged adjacently, a first display line is formed between one side of the second electrode and the first electrode adjacent thereto, a second display line is formed between the other side of the second electrode and the first electrode adjacent thereto, and the interlaced display that displays the first display line and the second display line alternately in different fields is performed, has been disclosed, wherein the reset voltage that directly relates to the intensity of the background light emission is varied according to the number of times of sustain discharges, the display conditions, and so on, in each subfield and the reset discharge is caused to occur with the minimum voltage in each subfield.

Plasma display apparatus and a method of driving the plasma display apparatus

A method of driving a PDP apparatus to sufficiently suppress the background light emission and improve the dark room contrast, in which first electrodes and second electrodes are arranged adjacently by turns, a first display line is formed between one side of the second electrode and the first electrode adjacent thereto, a second display line is formed between the other side of the second electrode and the first electrode adjacent thereto, and the interlaced display that displays the first display line and the second display line alternately in different fields is performed, has been disclosed, wherein the reset voltage that directly relates to the intensity of the background light emission is varied according to the number of times of sustain discharges, the display conditions, and so on, in each subfield and the reset discharge is caused to occur with the minimum voltage in each subfield.

Method of driving a plasma display apparatus to suppress background light emission

Method of driving a plasma display apparatus

A plurality of discharge electrodes having transparent electrodes connected to bus electrodes are arranged on the inner side of a front substrate. Alternatively, discharge electrodes having transparent electrodes and capable of discharging between their respective neighboring electrodes on both sides are arranged on the inner side of the front substrate. The front substrate is provided on the side of the display surface where discharge-generated light radiates out to the exterior. Shielding parts for shielding incident light from the exterior are formed on the transparent electrodes, or along the front substrate. Accordingly, the shielding parts reduce the surface reflection to improve the bright room contrast ratio. Forming the shielding parts with the same material as that of the bus electrodes prevents fabrication processes from becoming complicated. The areas of the shielding parts can be varied with the luminescent colors of cells, to change the luminescent brightness by the cell.

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Kawasaki, Japan

Shigeharu Asao