CN101719348A - Drive method for plasma display - Google Patents
Drive method for plasma display Download PDFInfo
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- CN101719348A CN101719348A CN 200810240998 CN200810240998A CN101719348A CN 101719348 A CN101719348 A CN 101719348A CN 200810240998 CN200810240998 CN 200810240998 CN 200810240998 A CN200810240998 A CN 200810240998A CN 101719348 A CN101719348 A CN 101719348A
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Abstract
The invention provides a drive method for a plasma display. The plasma display comprises a plurality of line scanning electrodes, a plurality of row addressing electrodes and a public electrode. The plasma display has the display way that a field is divided into a plurality of subfields, and each subfield is divided into a reset period, a scanning-addressing period and a maintaining period. The method comprises the following step of: forming a same-phase overlapping part between a Y maintaining period of the line scanning electrodes and an X maintaining period of the row addressing electrodes. The invention introduces wave shape overlapping in an individual period on an X drive wave shape and a Y drive wave shape of a drive electrode and carries out sequential distribution in the whole maintaining period, therefore, the wall charge with frequent change can be effectively adjusted, the residual charge and space retaining charge are reduced, and the optimal image quality can be ensured.
Description
Technical field
The present invention relates to the plasma display field, in particular to a kind of plasma display dirving method that is used for.
Background technology
Colour plasma display (PDP, Plasma Display Panel) is a kind of display device that developed rapidly in recent years.Colour plasma display becomes the first-selection of large screen display device with superior performance, the large-sized solor plasma display device has begun to come into the market at present, especially AC type AC-PDP has advantages such as type of drive is simple and obtains extensive studies and application, and can progressively be popularized in recent years.
Plasma panel is to excite the light-emitting phosphor of coating in the screen to come display image under the action of ultraviolet radiation that produces when helium+xenon (He+Xe), neon+xenon (Ne+Xe), helium+neon+xenon noble gas discharge such as (He+Ne+Xe).This PDP not only can filming and maximization, and along with the image quality that can provide more good that further develops of recent technology.The wall electric charge of surface accumulation can make the discharge required voltage reduce when especially the PDP of three-electrode surface discharge type utilized discharge, and the sputter of discharging and being produced is avoided on the guard electrode surface simultaneously, had the advantage of low voltage drive and long service life.
Plasma panel is divided into the different a plurality of subdomains of number of light emission times in order to show multi-grey level with a two field picture, promptly divides the demonstration of many sons.Drive waveforms is divided into reset period, sweep time and the phase of keeping again in each height field.Reset period is the initialization of picture, each discharge cell during this on display screen residual wall electric charge all to effectively be wiped, guarantee sweep time each row DATA data can be applied to the wall electric charge that makes discharge cell accumulation correct on the screen effectively; With periodic alternating discharge between the X that spends the phase of keeping, the Y electrode picture material is shown again.
Fig. 1 shows the conventional timing chart of keeping.From waveform as can be seen: keep in the cycle at each, all paraphase each other of X, Y drive waveforms do not have cross section, and the wall electric charge can not get effective adjustment always.
In realizing process of the present invention, if the inventor finds to have produced too much unnecessary wall electric charge or space free charge in keeping discharge process, cause the initialized waveform of wiping to remove wall electric charge on the discharge cell effectively, in the procedure for displaying of next frame image, will occur image residue so and cause the image inferior position to cause to have a strong impact on.
Summary of the invention
The present invention aims to provide a kind of plasma display dirving method that is used for, and can solve the problem that can not effectively remove the wall electric charge in the discharge process of keeping of prior art.
In an embodiment of the present invention, a kind of plasma display dirving method that is used for is provided, plasma display comprises a plurality of line scanning electrodes, a plurality of row addressing electrode and public electrode, the display mode of plasma display is one and is divided into a plurality of sons field, each son field is divided into reset period, scanning-address period and keeps the phase, may further comprise the steps: the X that the Y of the scan electrode of being expert at keeps cycle and row addressing electrode keeps the lap that forms homophase between the cycle.
Optionally, in above-mentioned driving method, Y keeps the cycle and the X cycle of keeping includes: keep pulse and overlappingly keep pulse, overlappingly keep ratio of pulse length to the total cycle length to keep pulse long.
Optionally, in above-mentioned driving method, Y keep the cycle keep pulse and X keeps the pulse inversion of keeping in cycle.
Optionally, in above-mentioned driving method, Y keeps the cycle overlappingly keeps pulse and X keeps the overlapping anti-phase part of formation of pulse and the lap of homophase kept in cycle.
Optionally, in above-mentioned driving method, Y keeps the cycle overlappingly keeps the rising edge of pulse and the leading portion and the overlapping the lowest point of keeping the cycle of X of summit forms anti-phase part.
Optionally, in above-mentioned driving method, the leading portion that the back segment of Y keeps the cycle the overlapping summit of keeping pulse and X be overlapping to keep the rising edge in cycle and summit forms the lap of homophase.
Optionally, in above-mentioned driving method, Y keeps the cycle overlappingly keeps the negative edge of pulse and the leading portion and the overlapping back segment of keeping the summit in cycle of X of the lowest point forms anti-phase part.
Optionally, in above-mentioned driving method, the leading portion that the back segment of Y keeps the cycle overlapping the lowest point of keeping pulse and X be overlapping to keep the negative edge in cycle and the lowest point forms the lap of homophase.
Optionally, in above-mentioned driving method, the duration of keeping pulse is 3.5 delicate (μ s), and the overlapping duration of keeping pulse is 6 delicate.
Optionally, in above-mentioned driving method, at the lap of homophase, the wall electric charge on the discharge cell forms an electric charge adjustment.
The driving method of the foregoing description is introduced waveform in specific cycle on drive electrode X, Y drive waveforms overlapping, carry out ordered distribution in cycle whole keeping, make that the wall electric charge of frequent variations can effectively be adjusted, reduce residual charge and space and leave over electric charge, can guarantee best picture quality.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 shows the conventional timing chart of keeping;
Fig. 2 shows and introduces waveform according to an embodiment of the invention and keep timing chart after overlapping;
Fig. 3 shows and introduces waveform according to another embodiment of the present invention and keep timing chart after overlapping;
Fig. 4 shows and introduces waveform according to another embodiment of the present invention and keep timing chart after overlapping;
Fig. 5 shows and introduces waveform according to another embodiment of the present invention and keep timing chart after overlapping.
Embodiment
Below with reference to the accompanying drawings and in conjunction with the embodiments, describe the present invention in detail.
One embodiment of the present of invention provide a kind of plasma display dirving method that is used for, plasma display comprises a plurality of line scanning electrodes, a plurality of row addressing electrode and public electrode, the display mode of plasma display is one and is divided into a plurality of sons field, each son field is divided into reset period, scanning-address period and keeps the phase, may further comprise the steps: the X that the Y of the scan electrode of being expert at keeps cycle and row addressing electrode keeps the lap that forms homophase between the cycle.
The driving method of the foregoing description is introduced waveform in specific cycle on drive electrode X, Y drive waveforms overlapping, carry out ordered distribution in cycle whole keeping, make that the wall electric charge of frequent variations can effectively be adjusted, reduce residual charge and space and leave over electric charge, can guarantee best picture quality.
Optionally, in above-mentioned driving method, Y keeps the cycle and the X cycle of keeping includes: keep pulse and overlappingly keep pulse, overlappingly keep ratio of pulse length to the total cycle length to keep pulse long.So just can form the lap of homophase.
Optionally, in above-mentioned driving method, Y keep the cycle keep pulse and X keeps the pulse inversion of keeping in cycle.This is basic identical with prior art.
Optionally, in above-mentioned driving method, Y keeps the cycle overlappingly keeps pulse and X keeps the overlapping anti-phase part of formation of pulse and the lap of homophase kept in cycle.This is because asynchronous anti-phase homophase and the anti-phase part of causing of phase place of the two.Fig. 2 shows and introduces waveform according to an embodiment of the invention and keep timing chart after overlapping, can see that t1 and t3 are anti-phase parts, and t2 and t4 are the laps of homophase.
Optionally, in above-mentioned driving method, Y keeps the cycle overlappingly keeps the rising edge of pulse and the leading portion and the overlapping the lowest point of keeping the cycle of X of summit forms anti-phase part t1., keep pulse and kept the alternating discharge structure in the time at t1, at this moment, the negative wall electric charge of accumulation on the Y electrode, the positive wall electric charge of accumulation on the X electrode.
Optionally, in above-mentioned driving method, the leading portion that the back segment of Y keeps the cycle the overlapping summit of keeping pulse and X be overlapping to keep the rising edge in cycle and summit forms the lap t2 of homophase.At t2 in the time, the Y electrode keeps keeping voltage, the X electrode voltage is by the low height that becomes, this moment, the wall CHARGE DISTRIBUTION was Y-, X+, and electrode voltage is Y+, X+, for the discharge of PDP screen, the direction of an electric field that has only drive electrode voltage to form is consistent with the direction of an electric field that the wall charge voltage forms, just can constitute discharge when being superimposed, therefore can not form discharge at t2 in the time, the wall electric charge has formed an electric charge adjustment under the effect of Electrode Field.
Optionally, in above-mentioned driving method, Y keeps the cycle overlappingly keeps the negative edge of pulse and the leading portion and the overlapping back segment of keeping the summit in cycle of X of the lowest point forms anti-phase part t3.In time, the voltage of Y electrode is low by hypermutation at t3, and it is consistent with the direction of an electric field that the direction of an electric field and the wall electric charge of the formation of X electrode form, and forms discharging structure, and accumulate positive wall electric charge on the Y electrode this moment, accumulates negative wall electric charge on the X electrode.
Optionally, in above-mentioned driving method, the leading portion that the back segment of Y keeps the cycle overlapping the lowest point of keeping pulse and X be overlapping to keep the negative edge in cycle and the lowest point forms the lap t4 of homophase.In time, the Y electrode keeps keeping voltage at t4, and the X electrode voltage is low by hypermutation, this moment, the wall CHARGE DISTRIBUTION was Y+, X-, electrode voltage is Y-, X-, can not form discharge at t4 in the time equally, and the wall electric charge has formed an electric charge adjustment once more under the effect of Electrode Field.
Optionally, in above-mentioned driving method, the duration of keeping pulse is 3.5 μ s, and the overlapping duration of keeping pulse is 6 μ s.
Keep the recurrence interval and the overlapping period-luminosity relation of keeping pulse waveform is as shown in the table.
| Keep the cycle (μ s) | |
| Keep pulse | ??3.5 |
| Overlappingly keep pulse | ??6 |
In above-mentioned driving method, at the lap of homophase, the wall electric charge on the discharge cell forms an electric charge adjustment.Make discharge stability according to above-mentioned situation by waveform optimization, the image retention problem can effectively be wiped and then solve to the wall electric charge.
For keeping the less relatively son field of umber of pulse, it keeps waveform as shown in Figure 3.
For keeping the more relatively word length of arteries and veins number of fields, it keeps waveform as shown in Figure 4 and Figure 5.
Certainly, for different PDP display and different drive waveforms, in each height field, need the overlapping quantity of keeping pulse that adds according to its what and actual displayed effect specific design of keeping number of pulses, reach best display effect with this.
From above description, as can be seen, the above embodiments of the present invention are primarily aimed at the discharge cell of plasma apparatus, comprise X electrode and Y electrode, reach discharge stability by keep part in driving by the reasonable change of keeping waveform, reduce unnecessary wall electric charge to greatest extent, reach effective removal afterimage of image, can guarantee best picture quality.
Obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with the general calculation device, they can concentrate on the single calculation element, perhaps be distributed on the network that a plurality of calculation element forms, alternatively, they can be realized with the executable program code of calculation element, carry out by calculation element thereby they can be stored in the memory storage, perhaps they are made into each integrated circuit modules respectively, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. one kind is used for plasma display dirving method, described plasma display comprises a plurality of line scanning electrodes, a plurality of row addressing electrode and public electrode, the display mode of described plasma display is one and is divided into a plurality of sons field, each son field is divided into reset period, scanning-address period and keeps the phase, it is characterized in that, may further comprise the steps:
The X that keeps cycle and described row addressing electrode at the Y of described line scanning electrode keeps the lap that forms homophase between the cycle.
2. driving method according to claim 1 is characterized in that, described Y keeps the cycle and the described X cycle of keeping includes: keep pulse and overlappingly keep pulse, describedly overlappingly keep ratio of pulse length to the total cycle length described to keep pulse long.
3. driving method according to claim 2 is characterized in that, described Y keep the cycle keep pulse and described X keeps the pulse inversion of keeping in cycle.
4. driving method according to claim 2 is characterized in that, described Y keeps the cycle overlappingly keeps pulse and described X keeps the overlapping anti-phase part of formation of pulse and the lap of described homophase kept in cycle.
5. driving method according to claim 4 is characterized in that, described Y keeps the cycle overlappingly keeps the rising edge of pulse and the leading portion and the overlapping the lowest point of keeping the cycle of described X of summit forms described anti-phase part (t1).
6. driving method according to claim 4 is characterized in that, the leading portion that the back segment of described Y keeps the cycle the overlapping summit of keeping pulse and described X be overlapping to keep the rising edge in cycle and summit forms the lap (t2) of described homophase.
7. driving method according to claim 4 is characterized in that, described Y keeps the cycle overlappingly keeps the negative edge of pulse and the leading portion and the overlapping back segment of keeping the summit in cycle of described X of the lowest point forms described anti-phase part (t3).
8. driving method according to claim 4 is characterized in that, the leading portion that the back segment of described Y keeps the cycle overlapping the lowest point of keeping pulse and described X be overlapping to keep the negative edge in cycle and the lowest point forms the lap (t4) of described homophase.
9. driving method according to claim 2 is characterized in that, the described duration of keeping pulse is 3.5 delicate, and the described overlapping duration of keeping pulse is 6 delicate.
10. driving method according to claim 1 is characterized in that, at the lap of described homophase, the wall electric charge on the discharge cell forms an electric charge adjustment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN 200810240998 CN101719348B (en) | 2008-12-24 | 2008-12-24 | Drive method for plasma display |
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| CN 200810240998 CN101719348B (en) | 2008-12-24 | 2008-12-24 | Drive method for plasma display |
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| CN101719348B CN101719348B (en) | 2012-05-09 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102063859A (en) * | 2010-12-24 | 2011-05-18 | 西安交通大学 | Method for improving display quality of AC-PDP (Alternating Current-Plasma Display Panel) image |
| CN110364107A (en) * | 2018-04-09 | 2019-10-22 | 苹果公司 | Emission of radio frequency signals induction display artifact reduction system and method |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4100337B2 (en) * | 2002-12-13 | 2008-06-11 | 松下電器産業株式会社 | Driving method of plasma display panel |
| CN100470614C (en) * | 2002-12-13 | 2009-03-18 | 松下电器产业株式会社 | Plasma display panel drive method |
| KR100625992B1 (en) * | 2003-11-29 | 2006-09-20 | 삼성에스디아이 주식회사 | Driving method of plasma display panel |
| KR100647776B1 (en) * | 2004-12-18 | 2006-11-23 | 엘지전자 주식회사 | Driving method of plasma display panel |
| KR100736587B1 (en) * | 2005-10-24 | 2007-07-09 | 엘지전자 주식회사 | Plasma Display Apparatus |
| KR100811474B1 (en) * | 2006-10-27 | 2008-03-07 | 엘지전자 주식회사 | Plasma display apparatus |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102063859A (en) * | 2010-12-24 | 2011-05-18 | 西安交通大学 | Method for improving display quality of AC-PDP (Alternating Current-Plasma Display Panel) image |
| CN110364107A (en) * | 2018-04-09 | 2019-10-22 | 苹果公司 | Emission of radio frequency signals induction display artifact reduction system and method |
| CN110364107B (en) * | 2018-04-09 | 2022-11-25 | 苹果公司 | Radio frequency signal emission-induced display artifact mitigation systems and methods |
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| CN101719348B (en) | 2012-05-09 |
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Granted publication date: 20120509 Termination date: 20161224 |