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Plasma display device and method for driving plasma display panel

A display device and display panel technology, which is applied to static indicators, components of color TVs, components of TV systems, etc., can solve problems such as difficult writing action, unstable writing discharge, disappearance and increase of wall charges, etc.

Inactive Publication Date: 2011-08-10
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, it is difficult to perform a stable address operation only with the technique of stabilizing the operation of the data electrode drive circuit disclosed in Patent Document 1, and it is difficult to stabilize the operation of the circuit for driving the scan electrodes (scan electrode drive circuit). technology is also important
[0011] In addition, since the application of the scan pulse voltage to the scan electrodes in the write period is performed sequentially for each scan electrode, especially in a high-definition panel, due to the increase in the number of scan electrodes, it takes a lot of time during the write period. time will be longer
Therefore, there is a problem that the disappearance of wall charge increases in the discharge cell that performs the address operation at the end of the address period compared with the discharge cell that performs the address operation first in the address period, and the address discharge tends to become unstable.

Method used

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  • Plasma display device and method for driving plasma display panel
  • Plasma display device and method for driving plasma display panel
  • Plasma display device and method for driving plasma display panel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0040] figure 1 It is an exploded perspective view showing the structure of the panel 10 in Embodiment 1 of this invention. A plurality of display electrode pairs 24 including scan electrodes 22 and sustain electrodes 23 are formed on glass front panel 21 . Furthermore, dielectric layer 25 is formed to cover scan electrodes 22 and sustain electrodes 23 , and protective layer 26 is formed on dielectric layer 25 .

[0041] In addition, in order to reduce the discharge start voltage in the discharge cell, the protective layer 26 is actually used as a panel material. When neon (Ne) and xenon (Xe) gases are sealed, the protective layer 26 emits secondary electrons. The coefficient is large and the durability is good MgO is formed as a material of a main component.

[0042] A plurality of data electrodes 32 are formed on rear plate 31 , and dielectric layer 33 is formed to cover data electrodes 32 , and grid-shaped partition walls 34 are formed thereon. Further, phosphor layers 3...

Embodiment approach 2

[0159] Figure 17 It is a driving voltage waveform chart applied to each electrode of panel 10 in Embodiment 2 of this invention. exist Figure 17 in, with image 3 Similarly, drive waveforms of scan electrode SC1 performing an address operation at the beginning of the address period, scan electrode SCn performing an address operation at the end of the address period, sustain electrodes SU1 to SUn, and data electrodes D1 to Dm are shown. .

[0160] Furthermore, in this embodiment, the driving voltage waveform generated in each subfield is equivalent to that in Embodiment 1. image 3 The driving voltage waveform is shown. In addition, each operation in each period in a subfield is also equivalent to each operation demonstrated in Embodiment 1. FIG.

[0161] However, the drive voltage waveform in this embodiment, such as Figure 17 As shown, the configuration is such that a rest period is provided between the last subfield (eighth SF) and the first subfield (first SF). Th...

Embodiment approach 3

[0178] In the present embodiment, in subfields other than a predetermined subfield, that is, in subfields other than a low subfield generated immediately after a high subfield, the sum of the luminance weights relative to one field has In a subfield with a luminance weight equal to or greater than a predetermined ratio, as described in Embodiment 1, the scan ICs are switched sequentially so that the write operation is performed first from the region with a high partial lighting ratio according to the detection result in the partial lighting ratio detection circuit. action. Then, in a subfield having a luminance weight smaller than a predetermined ratio to the sum of luminance weights in one field, scan pulse voltage Va is applied to scan electrode SC1 through scan electrode SCn in a predetermined order to perform an address operation.

[0179] Alternatively, in the present embodiment, in the subfields other than the predetermined subfield, that is, in the subfields other than ...

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PUM

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Abstract

Disclosed is a plasma display device wherein high image-display quality is attained by generating a stabilized write discharge. The plasma display device comprises a plasma display panel, a scan electrode driving circuit which performs a write operation by applying a scanning pulse to a scan electrode during a write period, and a partial lighting rate detecting circuit which divides the display area of the plasma display panel into a plurality of subareas and detects for each subfield the ratio of the number of discharge cells to be lighted to the number of all discharge cells in each subarea as a partial lighting rate, wherein the scan electrode driving circuit changes, in a predetermined subfield where the number of sustain pulses generated is smaller than that in an immediately preceding subfield, the order in which to apply a scanning pulse to the scan electrode according to a partial lighting rate in the immediately preceding subfield.

Description

technical field [0001] The present invention relates to a plasma display device and a driving method of a plasma display panel for a wall-mounted television or a large monitor. Background technique [0002] In a representative AC surface discharge panel as a plasma display panel (hereinafter simply referred to as a "panel"), a plurality of discharge cells are formed between a front panel and a rear panel that are arranged to face each other. In the front panel, a plurality of display electrode pairs consisting of a pair of scan electrodes and sustain electrodes are formed parallel to each other on a front glass substrate, and a dielectric layer and a protective layer are formed to cover these display electrode pairs. The back panel is formed on the rear glass substrate with a plurality of parallel data electrodes, a dielectric layer covering these data electrodes, and a plurality of barrier ribs parallel to the data electrodes on the dielectric layer, and is formed on the su...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/288G09G3/20H04N5/66G09G3/28G09G3/296G09G3/293G09G3/291G09G3/298
CPCH04N5/66G09G3/296G09G2360/16G09G3/293G09G2310/0218G09G3/291
Inventor 折口贵彦庄司秀彦齐藤朋之
Owner PANASONIC CORP