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Plasma display panel apparatus and method for driving the same

A display panel, plasma technology, applied in the direction of static indicators, instruments, etc., can solve the problems of rising, high-priced circuits, complex cost of driving circuits, etc., and achieve the effects of high image quality, high peak brightness, and high contrast.

Inactive Publication Date: 2006-08-02
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, in the above-mentioned prior art, if the number of sustained discharges increased is not an integer multiple, the correct gray scale cannot be displayed. Therefore, when the number of sustain discharges is not increased by an integer multiple, it is necessary to use the method of error diffusion to simulate the gray scale.
Therefore, in the PDP device, a relatively expensive circuit for error diffusion is inevitably required, and there is a problem that the driving circuit becomes complicated accordingly and the cost increases.

Method used

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  • Plasma display panel apparatus and method for driving the same
  • Plasma display panel apparatus and method for driving the same
  • Plasma display panel apparatus and method for driving the same

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Experimental program
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Embodiment approach 1

[0042] 1. Configuration of the PDP device

[0043] The overall configuration of the PDP apparatus according to Embodiment 1 will be described with reference to FIG. 1 . FIG. 1 is a block diagram showing the configuration of the PDP apparatus according to the present embodiment.

[0044] As shown in FIG. 1 , the PDP device of the present embodiment includes a panel unit 100 that displays video images and a drive unit 200 that drives the panel unit 100 for display using the intrafield time division grayscale display method.

[0045] 1-1. Configuration of Panel Unit 100

[0046] Second, use figure 2 and image 3 The structure of the panel part 100 in the structure of the PDP apparatus of this embodiment is demonstrated. figure 2 is a perspective view (partial cross-sectional view) of the main part of the panel portion 100, image 3 It is a schematic plan view of the panel part 100 .

[0047] like figure 2 As shown, the structure of the panel part 100 includes the airtight ...

Embodiment approach 2

[0117] Second, use Figure 11 , Figure 12 and Figure 13 A method of driving the PDP device according to Embodiment 2 will be described. In addition, since the schematic structure etc. of the PDP apparatus of this Embodiment are the same as those of the PDP apparatus of the said Embodiment 1, repeated description is abbreviate|omitted. Therefore, the control method and driving method of the optimum sustain data pulse processing unit will be described below.

[0118] In the first embodiment, the sustain data pulse 314 is assumed to be a pulse with a constant pulse width, and the fall start time is controlled and changed by changing the rise start time. Furthermore, the present inventors found that the brightness of the PDP device can be modulated by controlling the falling start time of the pulse waveform of the sustain data pulse 314 when a slightly dark screen is displayed, and thus can be controlled.

[0119] Therefore, in the present embodiment, the rising start time of ...

Embodiment approach 3

[0141] In Embodiments 1 and 2 described above, by controlling the falling start times of the sustain data pulses 314 and 414 in accordance with the luminance average value, clear (high-contrast) display is performed when a slightly dark screen is displayed. However, the present inventors found that, Furthermore, by controlling the voltage value of the sustain data pulse, the brightness of the PDP device can be modulated, thereby enabling clear (high-contrast) image display when displaying a slightly dark screen.

[0142] Therefore, in the present embodiment, a method is adopted in which the rise start time and the fall start time of the sustain data pulse 514 are kept constant regardless of the luminance average value, and the voltage value is set according to the luminance average value.

[0143] In this embodiment, the waveform of the sustain data pulse 514, the control method of the optimum sustain data pulse processing unit, and the configuration of the data driver are diff...

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Abstract

The present invention aims to provide a PDP apparatus, where a sustain data pulse is applied to data electrodes during a sustain period, having high display quality,and capable of displaying a dark screen image vividly with high contrast without using an error diffusion method, as well as to provide a method of driving the PDP apparatus. In order to achieve the above object, the method of driving the PDP apparatus according to the present invention, during the sustain period, detects an average luminance of a screen image to be displayed, and sets a voltage waveform of a sustain data pulse to be applied to the data electrodes according to the detected average luminance, thereby modulating a luminance of the screen image.

Description

technical field [0001] The present invention relates to a plasma display panel device and a method for driving the same, and more particularly, to a technology related to device driving for improving image quality. Background technique [0002] The plasma display panel device (PDP) is expected to be a display device compatible with future high-quality television broadcasts because it is easier to achieve a larger screen than a CRT device, which is a typical display device. PDP devices are divided into alternating current type (AC type) and direct current type (DC type). AC type is superior in reliability and image quality. Therefore, in PDP devices, AC type is the mainstream (hereinafter, the AC-type PDP devices are simply referred to as "PDP devices"). [0003] In addition, when the entire display screen of the PDP device is slightly black and the area of ​​the white portion is small (hereinafter, referred to as "slightly black screen"), the brightnes...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/28G09G3/294
CPCG09G2320/066G09G2360/16G09G3/2942G09G2320/0271G09G3/291G09G3/296
Inventor 桥本伸一郎北川雅俊森田幸弘小杉直贵
Owner PANASONIC CORP