CN100403363C - Drive method for three-electrode surface discharge type plasma display - Google Patents
Drive method for three-electrode surface discharge type plasma display Download PDFInfo
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- CN100403363C CN100403363C CNB200410073436XA CN200410073436A CN100403363C CN 100403363 C CN100403363 C CN 100403363C CN B200410073436X A CNB200410073436X A CN B200410073436XA CN 200410073436 A CN200410073436 A CN 200410073436A CN 100403363 C CN100403363 C CN 100403363C
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Abstract
The present invention relates to a driving method for a three-electrode surface discharge type plasma display. A subfield is divided into three periods of a resetting period, an addressing period and a holding period, wherein at the addressing period of the subfield, voltage applied to an X electrode of a holding electrode keeps unchanged; the amplitude of pulsed voltage applied to a Y electrode of a sweeping electrode or an A electrode of an addressing electrode changes in a linear or exponential mode; therefore, the total addressing time of a plasma display can be effectively reduced, and the effective time for keeping display is extended. The present invention is convenient to improving display brightness and image display quality and reducing pseudo contours.
Description
Technical field
The present invention relates to a kind of plasma display dirving method, particularly a kind of driving method of three-electrode surface discharge type plasma display.
Background technology
The display device that utilizes the plasma display (Plasma Display Panel) of Discharge illuminating generally to be used as giant-screen, minimal thickness more and more comes into one's own.The structure of plasma display generally adopts the three-electrode surface discharge type structure that Fuji Tsu proposes now, and its driving method generally adopts addressing and display separation driving method ADS (Address Display Separation).The major defect that this driving method exists is exactly the overlong time that addressing takies, and along with the raising of monitor resolution, the addressing time that is consumed is just longer, addressing time lengthening shortens with regard to meaning the time that really is used to show, this is disadvantageous for the display brightness that improves plasma display.Increase the method that shows son in order to eliminate the false contouring problem that exists when plasma display adopts ADS, generally can to adopt, also mean the increase greatly of addressing time, so also can reduce really to be used to time of showing greatly but increase son.How reducing the addressing time has become the major issue that PDP faces in driving, and it is even more important particularly just to seem in high-resolution occasion.
Summary of the invention
In order to solve the problem of the overlong time that addressing takies, the purpose of this invention is to provide a kind of driving method of three-electrode surface discharge type plasma display, utilize this method can effectively reduce the addressing time.
The technical solution adopted in the present invention is: a kind of driving method of three-electrode surface discharge type plasma display, a son field is divided into three cycles: reset period, address period and keep the phase, address period in the son field, it is constant to keep being applied to the voltage of keeping on the electrode X electrode, changes the voltage magnitude that is applied to pulse on scan electrode Y electrode or the addressing electrode A electrode.
The positive voltage amplitude that maintenance is applied on the addressing electrode A electrode is constant, makes the amplitude that is applied to the negative scanning impulse on the scan electrode Y electrode be linearity and gradually changes.
It is constant that maintenance is applied to the amplitude of the negative scanning impulse on the scan electrode Y electrode, makes the positive voltage amplitude that is applied on the addressing electrode A electrode be linearity and gradually change.
Make the amplitude that is applied to the negative scanning impulse on the scan electrode Y electrode and be applied to positive voltage amplitude on the addressing electrode A electrode and be linearity simultaneously and gradually change.
The positive voltage amplitude that maintenance is applied on the addressing electrode A electrode is constant, makes the amplitude that is applied to the negative scanning impulse on the scan electrode Y electrode be exponential form and gradually changes.
It is constant that maintenance is applied to the amplitude of the negative scanning impulse on the scan electrode Y electrode, makes the positive voltage amplitude that is applied on the addressing electrode A electrode be exponential form and gradually change.
Make the amplitude that is applied to the negative scanning impulse on the scan electrode Y electrode and be applied to positive voltage amplitude on the addressing electrode A electrode and be exponential form simultaneously and gradually change.
The invention has the beneficial effects as follows: method of the present invention is to adopt the driving method of addressing and display separation, the form that adopts driving voltage to gradually change in address period, specifically be that address period at son changes the width that the voltage magnitude be applied to the pulse on Y electrode or the A electrode reduces addressing pulse, thereby can effectively reduce total addressing time of plasma display, improve the effective time of keeping demonstration, help to improve brightness, raising image quality, the minimizing false contouring of demonstration.
Description of drawings
Fig. 1 is the structural representation of three-electrode surface discharge type plasma display of the present invention;
Fig. 2 is the drive waveforms figure that linear change address period of the present invention is applied to voltage magnitude on the Y electrode;
Fig. 3 is the drive waveforms figure that linear change address period of the present invention is applied to voltage magnitude on the A electrode;
Fig. 4 is the drive waveforms figure that linear change address period of the present invention is applied to voltage magnitude on Y electrode and the A electrode;
Fig. 5 is the drive waveforms figure that index variation address period of the present invention is applied to voltage magnitude on the Y electrode;
Fig. 6 is the drive waveforms figure that index variation address period of the present invention is applied to voltage magnitude on the A electrode;
Fig. 7 is the drive waveforms figure that index variation address period of the present invention is applied to voltage magnitude on Y electrode and the A electrode.
Among the figure, 1. top glass substrate, 2. lower glass substrate, 3.X electrode, 4.Y electrode, 5. barrier, 6.A electrode.
Embodiment
Below in conjunction with accompanying drawing the present invention is elaborated.
Shown in Figure 1 is a kind of structure of typical three electrode A C surface discharge type plasma displays.Be sealed to form by top glass substrate 1 and lower glass substrate 2, on the top glass substrate inwall, made from left and right sides both direction and drawn and the parallel electrodes group, wherein one group is called and keeps electrode, usually be also referred to as the X electrode, another group is called scan electrode, usually be also referred to as the Y electrode, arranging parallel to each other on the lower glass substrate and with top glass substrate on keep the electrode of show electrode quadrature, these electrodes are called addressing electrode, usually be also referred to as the A electrode, made barrier 5 between these electrodes, the medium strip on lower glass substrate just, it is divided into a rule display unit as wall with institute's filling with inert gas between glass plate, and every display unit is just following to an addressing electrode should be arranged.
A kind of driving method of three-electrode surface discharge type plasma display, a son field is divided into three cycles: reset period, address period and keep the phase, address period in the son field, it is constant to keep being applied to the voltage of keeping on the electrode X electrode, changes the voltage magnitude that is applied to pulse on scan electrode Y electrode or the addressing electrode A electrode.
In address period, potential pulse amplitude of bearing on discharge space ion concentration, the display unit gas and width have very important influence to forming the wall electric charge.Because As time goes on the space ion concentration that forms at reset period can reduce gradually, and the addressing time after the reset period is long, so the difference of each each display unit space ion concentration of moment will be bigger from start to end for address period.If at this moment apply the pulse of identical characteristics on each unit, the wall electric charge of accumulation also is different.If the wall electric charge difference on each unit keeps each display unit to show in the phase of keeping with identical driving pulse and also difference can occur, even overdue bright situation can occur.The present invention makes each unit be consistent in the wall electric charge situation in addressing latter stage by the pulse that applies different qualities in the different time period of address period, thereby help to eliminate overdue bright, also help simultaneously and reduce the addressing time, increase the time that really is used to keep demonstration.
Because the residing situation in each unit of address period is different, and simple and convenient on controlling, so in order to keep the stabilizing address of all unit, generally be according to the width of determining addressing pulse under the poorest working condition and amplitude, so just make some unit the addressing allowance than its true needs greatly a lot.If needed addressing pulse is set as required, so just can effectively reduce the addressing time.In addition, the voltage that is applied on the display unit gas in address period is big more, and discharge delay is just more little, and the wall electric charge of accumulation is just many more.The voltage that is applied on the display unit gas in address period is more little, and discharge delay is just big more, and the wall electric charge of accumulation is just few more.
Referring to Fig. 2, the positive voltage amplitude that maintenance is applied on the addressing electrode A electrode is constant, makes the amplitude that is applied to the negative scanning impulse on the scan electrode Y electrode be linearity and gradually changes.Prolongation along with address period, the negative voltage that is applied on the Y electrode is just low more, will make the effective voltage that is applied on the display unit gas big more like this, so just can effectively remedy the address discharge delay increase that the space ion concentration reduces to cause, it is basic identical that thereby the address discharge that just can make all unit postpones to keep, therefore what the addressing time just can be selected is smaller, and addressing finishes afterwards each, and need to accumulate the wall electric charge that accumulates in the unit of wall electric charge also basic identical.In Fig. 2, the change in voltage that the address period zero hour and the finish time apply on the Y electrode is Δ V.
Referring to Fig. 3, it is constant that maintenance is applied to the amplitude of the negative scanning impulse on the scan electrode Y electrode, makes the positive voltage amplitude that is applied on the addressing electrode A electrode be linearity and gradually change.Being applied to voltage on the A electrode by change changes and is applied to effective voltage on the display unit, prolongation along with address period, the voltage that is applied on the A electrode is just high more, will make the effective voltage that is applied on the display unit gas big more like this, so just can effectively remedy the address discharge delay increase that the space ion concentration reduces to cause, thereby the address discharge that just can make all unit postpone to keep basic identical, thus the addressing time just can select smaller.And addressing finish the back each need to accumulate the wall electric charge that accumulates in the unit of wall electric charge also basic identical.In Fig. 3, the change in voltage that the address period zero hour and the finish time apply on the A electrode is Δ V.
Referring to Fig. 4, make the amplitude that is applied to the negative scanning impulse on the scan electrode Y electrode and be applied to positive voltage amplitude on the addressing electrode A electrode to be linearity simultaneously and to gradually change.Change and be applied to effective voltage on the display unit by changing the voltage be applied on Y electrode and the A electrode simultaneously, prolongation along with address period, the voltage magnitude that is applied on the Y electrode is low more, and the voltage that applies on the A electrode is just high more, will make the effective voltage that is applied on the display unit gas big more like this, so just can effectively remedy the address discharge delay increase that the space ion concentration reduces to cause, thereby the address discharge that just can make all unit postpone to keep basic identical, thus the addressing time just can select smaller.And addressing finish the back each need to accumulate the wall electric charge that accumulates in the unit of wall electric charge also basic identical.In Fig. 4, the change in voltage that the address period zero hour and the finish time apply on the A electrode is Δ Va, and the change in voltage that applies on the Y electrode is Δ Vy.
Referring to Fig. 5, the positive voltage amplitude that maintenance is applied on the addressing electrode A electrode is constant, makes the amplitude that is applied to the negative scanning impulse on the scan electrode Y electrode be exponential form and gradually changes.Reduce the width of addressing pulse in address period by the amplitude that changes the voltage that applies on the Y electrode, the voltage that is applied on the Y electrode is the exponential pulse variation.
Referring to Fig. 6, it is constant that maintenance is applied to the amplitude of the negative scanning impulse on the scan electrode Y electrode, makes the positive voltage amplitude that is applied on the addressing electrode A electrode be exponential form and gradually change.Reduce the width of addressing pulse in address period by the amplitude that changes the voltage that applies on the A electrode, what be applied to voltage on the A electrode is the exponential pulse variation.
Referring to Fig. 7, make the amplitude that is applied to the negative scanning impulse on the scan electrode Y electrode and be applied to positive voltage amplitude on the addressing electrode A electrode to be exponential form simultaneously and to gradually change.Reduce the width of addressing pulse in address period by the amplitude that changes the voltage that applies on Y electrode and the A electrode, the voltage that is applied on Y electrode and the A electrode is the exponential pulse variation.
These several driving methods have carried out in a large number experimental study on 42 inches PDP (VGA), when address period makes change in voltage on A electrode and the Y electrode at 5 to 20 volts, can make the minimum addressing time be reduced to 1.7 microseconds, that is to say to make the addressing time reduce 30% from 2.5 microseconds.This shows this driving method at the sub-number of fields order raising maximum luminousing brightness that do not change, perhaps by improve sub-number of fields order improve the image quality aspect can be very effective.
Claims (3)
1. the driving method of a three-electrode surface discharge type plasma display, a son field is divided into three cycles: reset period, address period and keeping the phase, address period in the son field, it is constant to keep being applied to the voltage of keeping on the electrode X electrode, change the voltage magnitude that is applied to pulse on scan electrode Y electrode or the addressing electrode A electrode, it is characterized in that, change the voltage magnitude be applied to pulse on scan electrode Y electrode and the addressing electrode A electrode, make the amplitude that is applied to the negative scanning impulse on the scan electrode Y electrode and be applied to positive voltage amplitude on the addressing electrode A electrode to be linear simultaneously or to be exponential form and gradually change.
2. the driving method of a kind of three-electrode surface discharge type plasma display according to claim 1, it is characterized in that, make the amplitude that is applied to the negative scanning impulse on the scan electrode Y electrode and be applied to positive voltage amplitude on the addressing electrode A electrode to be linearity simultaneously and to gradually change.
3. the driving method of a kind of three-electrode surface discharge type plasma display according to claim 1, it is characterized in that, make the amplitude that is applied to the negative scanning impulse on the scan electrode Y electrode and be applied to positive voltage amplitude on the addressing electrode A electrode to be exponential form simultaneously and to gradually change.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB200410073436XA CN100403363C (en) | 2004-12-20 | 2004-12-20 | Drive method for three-electrode surface discharge type plasma display |
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| CNB200410073436XA CN100403363C (en) | 2004-12-20 | 2004-12-20 | Drive method for three-electrode surface discharge type plasma display |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN100447837C (en) * | 2005-10-14 | 2008-12-31 | 四川世纪双虹显示器件有限公司 | Method for improving scan pulse voltage to reduce power consumption |
| KR20070118915A (en) * | 2006-06-13 | 2007-12-18 | 엘지전자 주식회사 | Driving method for plasma display panel |
| JPWO2009072239A1 (en) * | 2007-12-06 | 2011-04-21 | パナソニック株式会社 | Plasma display panel display device and driving method thereof |
| WO2011000201A1 (en) * | 2009-06-30 | 2011-01-06 | 四川虹欧显示器件有限公司 | Y driving circuit |
| CN102142225A (en) * | 2010-09-30 | 2011-08-03 | 四川虹欧显示器件有限公司 | Addressing drive circuit of plasma display |
| CN101950531B (en) * | 2010-09-30 | 2012-09-05 | 四川虹欧显示器件有限公司 | Scanning-sustaining electrode drive circuit, plasma display and drive circuit thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1165516A (en) * | 1997-08-18 | 1999-03-09 | Hitachi Ltd | Method and device for driving plasma display panel |
| US20040130509A1 (en) * | 2002-12-23 | 2004-07-08 | Lg Electronics Inc. | Method and apparatus for driving plasma display panel using selective writing and erasing |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1165516A (en) * | 1997-08-18 | 1999-03-09 | Hitachi Ltd | Method and device for driving plasma display panel |
| US20040130509A1 (en) * | 2002-12-23 | 2004-07-08 | Lg Electronics Inc. | Method and apparatus for driving plasma display panel using selective writing and erasing |
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