Panasonic Corporation

Matsushita Electric Industrial Co., Ltd.

Yasuaki Mutou

Shigeo Kigo

Minoru Takeda

Hidehiko Shoji

Takahiko Origuchi

Takateru Sawada

A first ramp waveform (RW) rising from a first potential (Vscn) to a second potential (Vscn+Vset) is applied to a plurality of scan electrodes (SCi) in a first period (tto t), and a driving waveform dropping from a third potential (Ve) to a fourth potential (0V) is applied to a plurality of sustain electrodes (SUi) before the first period (tto t), and the plurality of sustain electrodes are held at the fourth potential (0V) in the first period (tto t). At this time, a second ramp waveform (RW) rising from a fifth potential (0 V) to a sixth potential (Vd) according to change of a potential of the first ramp waveform (RW) is applied to a plurality of data electrodes (Dj) in a second period (tto t) that starts at a starting time point (t) of the first period (tto t) and is shorter than the first period (tto t), thereby preventing generation of strong discharges between the plurality of data electrodes (Dj) and the plurality of scan electrodes (SCi).

Driving device, driving method and plasma display apparatus

One field is formed of a plurality of sub-fields, and each one of the sub-fields includes an initializing period, addressing period, and sustained period. The sub-field is one of an entire-cell initialization sub-field or a selective-cell initialization sub-field. When the entire initialization sub-field is switched to the selective one or vice versa, an initializing voltage which generates initializing discharge in the entire initialization sub-field is controlled. This control allows varying the number of the entire initializations and stabilizing address discharge in a plasma display panel, and at the same time, making the black luminance inconspicuous for improving the picture quality.

Method of driving plasma display panel, and plasma display device

In the initializing period of each of sub-fields comprising one field, one of all-cell initializing operation and selective initializing operation is performed. The all-cell initializing operation causes initializing discharge in all the discharge cells for displaying an image. The selective initializing operation selectively causes initializing discharge only in the discharge cells subjected to sustaining discharge in the preceding sub-field. During initializing discharge using scan electrodes as anodes, and using sustain electrodes and data electrodes as cathodes in the all-cell initializing period, applying, to the data electrodes, a voltage for delaying discharge using the data electrodes as the cathodes, after discharge using the sustain electrodes as the cathodes.

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Osaka, Japan

Yasuaki Mutou