Fujitsu Corporation

Hitachi Plasma Patent Licensing Co., Ltd.

Hitachi Consumer Electronics Co., Ltd.

Seiichi Iwasa

Kenji Awamoto

Yasunobu Hashimoto

Yasushi Yoneda

Hideyuki Motoyama

Makoto Yoshioka

Yoshiya Kaneko

Kengo Nogiwa

Kenichi Utsumi

Nagaaki Koshino

Masahiro Nakada

Hidema Uchishiba

Goro Watanabe

Isao Kawamura

Shobu Orihara

Ryoichi Kinoshita

Kazuyuki Yamaguchi

When performing the line-sequential addressing for setting the state of each of the cells arranged in rows and columns that constitute a display screen, discharge is generated that has intensity in accordance with display data corresponding to each of all cells belonging to the selected row for each selection of the row. Thus, the priming effect in the following discharge is generated.

Method for driving a gas-discharge panel

A method for driving an AC type surface-discharge display device having cells arranged in a matrix. Each cell has at least three electrodes including a pair of main electrodes and on every line of the matrix and an address electrode on every column of the matrix. The method includes conducting an address preparation period including applying a first charge adjusting voltage, monotonously rising or falling, to a gap between the main electrodes. The method also includes applying a charge adjusting voltage, monotonously rising or falling, to a gap between a scan electrode and the address electrode.

Method for driving a gas electric discharge device

A method for driving a plasma display panel having at least first electrodes and second electrodes which cause discharge in cells is provided. The method includes applying a first pulse and a second pulse to the second electrode in an address preparation period. The method also includes applying a scan pulse to the second pulse to the second electrode in an address period. The method includes the first pulse having a voltage changing with time in a positive direction and the second pulse having a voltage changing with time in a negative direction and the scan pulse having a negative voltage which is lower than the attained voltage of the second pulse.

A method of driving a gas discharge device for displaying a frame with gradation. A charge producing voltage and a charge adjusting voltage are successively applied in an address preparation period to respective subfields.

A method for driving an AC type surface-discharge display device which has cells arranged in a matrix. Each of the cells has at least three electrodes including a pair of main electrodes on every line of the matrix and an address electrode on every column of the matrix. The method includes providing an address preparation period applying a charge producing pulse and applying a charge adjusting pulse. The charge adjusting pulse has a waveform monotonously falling from a reference potential and a negative polarity and is applied to the second main electrode used as a scan electrode and generates feeble electric discharges between the first and second main electrodes. The feeble electric discharges are accompanied by a decrease of the wall voltage formed by the charge producing pulse.

A plasma display device having display electrode pairs and providing improved luminance and light emission efficiency of display discharges with reduced variations of the luminance and light emission efficiency thereof resulting from variations of a display load. A discharge is generated by applying an offset drive voltage that is higher than a sustain voltage applied to the display electrode pair, and applying the sustain voltage for a constant period after dropping the applied voltage from an offset drive voltage to the sustain voltage after generating the display discharge. The drive output state is set to a low impedance state at least during a time period from the start of applying the offset drive voltage until the applied voltage drops to the sustain voltage.

Method and device for driving plasma display panel

A method for driving a gas electric discharge device which has a first electrode and a second electrode and is constructed such that a wall voltage is capable of being produced between the first and second electrodes. The method includes applying a voltage monotonously rising from a first set value to a second set value, between the first and second electrodes, thereby to generate a plurality of gas electric discharges so as to decrease the wall voltage for charge adjustment during the voltage rise.

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Kawasaki, Japan

Seiichi Iwasa