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Method for driving plasma display panel

A display panel, plasma technology, used in static indicators, cold cathode tubes, instruments, etc., can solve problems such as false contours

Inactive Publication Date: 2003-12-31
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In other words, one element emits light while the other does not, thus causing the problem of false contours at the boundary of the two discharge cells

Method used

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  • Method for driving plasma display panel
  • Method for driving plasma display panel
  • Method for driving plasma display panel

Examples

Experimental program
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Embodiment Construction

[0048] Several embodiments of the present invention will be described below with reference to the accompanying drawings.

[0049] FIG. 2 schematically shows the structure of a plasma display including a driver for driving a plasma display panel (hereinafter abbreviated as "PDP") based on the driving method of the present invention.

[0050] 2, the A / D converter 1 samples an analog input video signal in response to the clock signal input therein from the drive control circuit 2, and converts it into 6-bit pixel data D (input Pixel data), the pixel data D is input to the data conversion circuit 3.

[0051] The data conversion circuit 3 is based on image 3 and 4 The conversion table shown in converts the pixel D into 9-bit converted pixel data HD (display pixel data), and this converted pixel data HD is input into the memory 4. It should be noted that, image 3 and 4 The conversion table shown in is just one example of a conversion table for displaying 64-level halftone ima...

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Abstract

A method of driving a plasma display panel capable of improving the contrast with reduced power consumption while suppressing a pseudo-contour. In each of a plurality of subfields divided from a display period of one field, a pixel data writing stage is executed for selectively erasing and discharging wall charges formed in discharge cells in accordance with pixel data to set the discharge cells to light emitting cells and non-light emitting cells, and a light emission sustaining stage is executed for allowing the light emitting cells to sustain light emission for a time corresponding to weighting for each subfield. Also, a simultaneous resetting stage is provided for simultaneously resetting or discharging all discharge cells to form wall charges only in the first subfield in a group of subfields including at least two mutually consecutive subfields, and the erasing discharge is performed only in the pixel data writing stage in any subfield in the group of subfields.

Description

technical field [0001] The present invention relates to a method of driving a matrix display type plasma display panel (hereinafter abbreviated as "PDP"). Background technique [0002] As a matrix display type display panel, an AC (alternating current discharge) type PDP is known in the art. [0003] The AC-type PDP includes a plurality of column electrodes (address electrodes) and a plurality of row electrode pairs arranged perpendicular to the column electrodes, and each row electrode pair forms a scanning line. Both the row electrode pairs and the column electrodes are covered with an insulating layer to separate them from the discharge space. A discharge cell corresponding to a pixel is formed at the intersection of the row electrode pair and the column electrode. [0004] A method of displaying halftone images on such a PDP is the so-called subfield method described in Japanese Patent Laid-Open No. Hei 4-195087. In the subfield method, a field period is divided into ...

Claims

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Application Information

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IPC IPC(8): G09G3/20G09G3/292G09G3/293
CPCG09G3/2051G09G3/2927G09G2360/16G09G2320/0266G09G3/2022G09G3/2922G09G2320/0238G09G3/2059G09G3/2935G09G3/2937
Inventor 德永勉重田哲也铃木雅博
Owner PANASONIC CORP
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