Plasm display panel driving method and plasm display device

Abstract

Provided is a method for driving plasma display panel capable of changing the quantity of emission in an erasure discharge. The method drives a plasma display panel including a scanning electrode drive circuit (3) for driving scanning electrodes (112), a keeping electrode drive circuit (2) for driving keeping electrodes (111), an address electrode drive circuit (4) for driving address electrodes (121), and a control circuit (5) for controlling the actions of the individual drive circuits. The individual drive circuits are driven for a reset period, in which one field is divided for actions into a plurality of sub-fields for adjusting the electric charges in cells, for an address period, in which cells to be issued are designated, for a keeping period, in which discharges are repeated with the scanning electrodes and the keeping electrodes to cause the emissions of the cells, and for an erasure period, in which the quantity of wall charges formed in the cell having emitted finally of the keeping period is reduced. Erasure waveforms of at least two kinds having different emission quantities are selected and applied by the drive method of the erasure period. The erasure waveforms are arbitrarily selected for the erasure period of each sub-field.

Description

technical field [0001] The present invention relates to a driving method of an AC type plasma display panel used in a display device such as a personal computer or a workstation, a flat panel television, or a display for displaying advertisements or information. Background technique [0002] In the conventional 3-electrode AC type color plasma display, there is a period of erasing or reducing wall charges at the end of the sustain period (sustain period). In order to connect with the subsequent reset period, the polarity and the like of this driving waveform are restricted. In addition, if the operation pulse applied to the scan electrode is negative, the number of sustain discharges between the scan period and the reset period must be either odd or even in all subfields (SF). [0003] As a driving method of such an AC type color plasma display, it is proposed (for example, refer to Patent Document 1): In a memory type AC plasma display of a dot matrix type (dot matrix type...

AI Technical Summary

Problems solved by technology

[0007] In the conventional driving method described above, there is a problem that when changing the number of sustain discharges, if it is an odd number, it becomes an odd number, and if it is an even number, it becomes an even number, and the number must be changed by a multiple of 2. , so it cannot express the brightness in the middle of it

In order to change the number of sustain discharges including erasure to either odd or even, it is necessary to reverse the polarity of the sustain electrodes and scan electrodes during the reset period, thus complicating the circuit structure and increasing the cost.

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