Pioneer Corporation

Panasonic Corporation

Yuya Shiozaki

Tsutomu Tokunaga

Kazuo Yahagi

Nobuhiko Saegusa

Mitsuhiro Ishizuka

Hajime Homma

Yoshichika Sato

Shunsuke Itakura

Shigeru Iwaoka

Hideto Nakamura

Kazuhiro Kanai

Hikaru Takahashi

Hitoshi Fujimura

It is an object to provide a driving method of a plasma display panel, whereby a dark contrast can be improved while suppressing an erroneous discharge. In a resetting step in a first unit display period, while a first reset pulse having a predetermined peak electric potential is applied to one of first row electrodes of row electrode pairs formed in the PDP, a second reset pulse having a peak electric potential smaller than that of the first reset pulse is applied to the other of the first row electrodes. In the resetting step in a second unit display period subsequent to the first unit display period, a second reset pulse is applied to each of the one and the other of the first row electrodes.

Driving method of plasma display panel

A method for driving a plasma display panel (PDP) that can increase dark contrast without causing erroneous discharges is provided. A unit display period is divided into a plurality of subfields. A reset process and a sustain process are performed in one of the subfields. In the reset process, a reset pulse is applied to row electrodes of the PDP to initialize each discharge cell to an emission mode (or non-emission mode). In the sustain process, a sustain discharge is repeatedly generated a number of times, corresponding to the number of times a sustain pulse is to be applied, in those discharge cells that are in the emission mode. In this case, a peak potential of the reset pulse is changed based on the number of those discharge cells that are maintained in the non-emission mode during the unit display period and the number of times the sustain pulse is to be applied in the sustain process in this subfield.

Method for driving plasma display panel

The present invention is a display device and display panel drive method that allow a more rapid select operation to be stably implemented by increasing the discharge probability of selective discharge. The display device comprises an address part that sequentially applies a positive scan pulse to a first row electrode of each of the display panel row electrode pairs in the address cycle while sequentially applying a pixel data pulse corresponding to the pixel data at the same timing as the scan pulse to each of the display panel column electrodes one display line at a time so that the column electrode side constitutes a cathode, such that an address discharge is selectively produced in the second discharge cell; and a sustain part that applies a sustain pulse to each of the row electrodes constituting the row electrode pairs in the sustain cycle, and the sustain part applies the ultimate sustain pulse of the sustain pulses applied in the address cycle to the first row electrode with a negative polarity.

Display device and display panel drive method

A plasma display panel drive method by which good image displays can be performed even when the pulse widths of drive pulses applied to the plasma display panel are made short. Each time the execution of pixel data writing on one display line group among a plurality of display lines of the plasma display panel is completed, a sustained discharge operation is executed on each of the emitting cells belonging to that one display line group.

A method for driving a plasma display panel is deviced to produce a high-quality image with an increased number of gradations. In each subfield, first and second picture element data write processes are executed for writing picture element data in each discharge cell belonging to first and second display areas of the plasma display panel. In addition, first and second light emission sustaining processes are executed for emitting discharge cells in the light emitting state out of the discharge cells belonging to the first and second display areas. In this process, in subfields with less weight among the subfields, the first light emission sustaining process is executed immediately after the completion of the first picture element data write process, the second picture element data write process is executed immediately after the completion of the first light emission sustaining process, and the second light emission sustaining process is executed immediately after the completion of the second picture element data write process.

Growing community of inventors

Yamanashi, Japan

Yuya Shiozaki