CN100590693C - Driving method for grooved plasma display board - Google Patents
Driving method for grooved plasma display board Download PDFInfo
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- CN100590693C CN100590693C CN 200710025094 CN200710025094A CN100590693C CN 100590693 C CN100590693 C CN 100590693C CN 200710025094 CN200710025094 CN 200710025094 CN 200710025094 A CN200710025094 A CN 200710025094A CN 100590693 C CN100590693 C CN 100590693C
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Abstract
The invention discloses a wall electric charge in a recovery period of an erasing period of a groove type plasma display according to the characteristic of phase discharge by two electrodes in existing groove type plasma display, which forms an electric field by applying a pulse voltage via a rear basal plate addressing electrode (electrode A), generates impact on a display unit of the groove typeplasma display in the recovery period, eliminates the impact of wall electric discharge accumulated in an ignited unit in a front sub-field and ensures each discharge unit in the full screen to accumulate to a status irrelevant to previous display status. Therefore, the invention further enhances the reliability and display quality of the groove type plasma display panel and realizes the object of making the groove type plasma display panel the display of next generation.
Description
Technical field
The present invention relates to a kind of driving method for grooved plasma display board.
Background technology
The plasma panel display (PDP) that early 1990s rises, with its digitizing, giant-screen, high resolving power, high definition, wide visual angle and thin thickness, advantage such as in light weight is subjected to extensive concern.
Existing groove type plasma display panel (SM-PDP) adopts is that two electrodes are respectively to keep electrode (X electrode) on the prebasal plate; The interchange subtend discharge mode of the addressing electrode on the metacoxal plate (A electrode).In the restored cycle in the erasing period of SM-PDP, what adopt is to keep on the electrode (X electrode) at prebasal plate to apply a composite high pressure pulse, and addressing electrode (A electrode) remains on ground voltage state (0V), do not participate in the accumulation of wall electric charge, in order to obtain stable wall electric charge, make full frame in restored cycle, no matter the discharge condition of each unit is how in the last son, even by the wall electric charge that all unit are produced.In the restored cycle of this driving method in the erasing period of SM-PDP, what adopt is to keep on the electrode (X electrode) at prebasal plate to apply a composite high pressure pulse, and addressing electrode (A electrode) remains on ground voltage state (0V), do not participate in the accumulation of wall electric charge, the wall electric charge that makes some unit produce is inhomogeneous, the unit that should not be lighted a fire in the next son field produces mis-ignition, has influenced the raising of display quality.
Summary of the invention
The objective of the invention is to cause that easily mis-ignition influences the problem of display quality because the wall electric charge that produces in the discharge cell is inhomogeneous at existing driving method, invent a kind of in restored cycle, no matter the discharge condition of each unit how in the last son field, obtain the driving method for grooved plasma display board of stabilized uniform wall electric charge by making all unit behind the restored cycle.
Technical scheme of the present invention is:
A kind of driving method for grooved plasma display board, it is characterized in that during the restored cycle of each discharge cell mesospore CHARGE DISTRIBUTION of initialization in the son of each display frame, keeping apply reset pulse on the electrode in, the corresponding pulse voltage that applies on the metacoxal plate addressing electrode, form of the recovery voltage pulse of a new compound reset pulse, make the stabilized uniform wall electric charge that each discharge cell enough runs up to and a preceding show state is irrelevant in full frame as grooved plasma display screen.
The son field of described each frame also comprises the erase cycle of carrying out erasure discharge.
Describedly apply reset pulse on the electrode and be meant during restored cycle keeping, by having the erasing pulse and the wall charge interaction that opposite polarity is arranged that the gentle slope drops to voltage-Vs to using, wipe the wall electric charge in all unit, rise to voltage+Vs pulse with having the gentle slope, wipe the wall electric charge that to wipe fully the front, again voltage is rapidly increased to Vs+Vw, make the micro discharge state that is in of full frame all unit, then apply of the pulse of a voltage with having the Ramp Down pulse and the corresponding addressing electrode of gentle slope drop-out voltage for+Vaw from+Vs to-Vs at the X electrode, under the effect of compound field, remove wall electric charge unnecessary in all unit, the result is all cell discharges that make on all display lines, produces and the irrelevant wall electric charge that is evenly distributed of last show state.
To apply a voltage identical for the pulse width of+Vaw with having the Ramp Down pulse width and the corresponding addressing electrode of gentle slope drop-out voltage from+Vs to-Vs at the X electrode.
It is variable being applied to voltage Vaw on the addressing electrode and the potential difference (PD) between the voltage in the addressing period in restored cycle.
The zero-time of Ramp Down can have certain delay on pulse voltage reference position that can apply on the addressing electrode and the scan electrode.
The time dependent pulse voltage of wave form varies rate of the voltage time per unit that can apply on the addressing electrode.
The time dependent pulse of wave form varies rate of the voltage time per unit that applies on the addressing electrode can be the linear change waveform.
The time dependent pulse of wave form varies rate of the voltage time per unit that applies on the addressing electrode can be the nonlinearities change waveform.
Beneficial effect of the present invention:
The present invention is by applying pulse voltage on addressing electrode, allow it participate in the accumulation of wall electric charge, make full frame in restored cycle, no matter the discharge condition of each unit how in the last son field, even by the wall charge stable that all unit are produced, improved the whole screen reliability when the groove type plasma display panel image shows greatly.
Description of drawings
Fig. 1 is the structural representation of groove type plasma display panel of the present invention.
Fig. 2 is a grooved plasma display screen electrode relative position distribution synoptic diagram of the present invention.
Fig. 3 is the voltage oscillogram of grooved plasma display screen driving method example of the present invention.
The example drive waveforms synoptic diagram of Fig. 4 driving method of the present invention erasing period part in the son field of appointment.
Fig. 5 is the oscillogram of variable voltage Vaw of the present invention.
Fig. 6 is the drive waveforms synoptic diagram that addressing electrode of the present invention can change pulsewidth.
Fig. 7 is the time dependent pulse waveform of wave form varies rate that addressing electrode of the present invention applies time per unit behind the voltage.
Embodiment
The present invention is further illustrated below in conjunction with drawings and Examples.
Shown in Fig. 1～7.
A kind of driving method for grooved plasma display board, during the restored cycle of each discharge cell mesospore CHARGE DISTRIBUTION of initialization in the son of each display frame, keeping apply reset pulse on the electrode (being the X electrode) in, go up the corresponding pulse voltage that applies at metacoxal plate addressing electrode (being the A electrode), form of the recovery voltage pulse of a new compound reset pulse, make the stabilized uniform wall electric charge that each discharge cell enough runs up to and a preceding show state is irrelevant in full frame as grooved plasma display screen.Whole screen reliability when further improving the demonstration of groove type plasma display panel image.
When can on keeping electrode (X electrode), apply reset pulse during concrete enforcement, metacoxal plate addressing electrode (A electrode) also applies a pulse voltage, form of the recovery voltage pulse of a new compound reset pulse as grooved plasma display screen, help the accumulation of wall electric charge, make the wall electric charge that each discharge cell enough runs up to and a preceding show state is irrelevant in full frame.
As shown in Figure 1, the structure of groove type plasma display panel mainly is made of metacoxal plate 1, aperture plate plate 3 and prebasal plate 2.Metacoxal plate 1 comprises back substrate glass substrate 4, film first electrode 5 (row electrode, addressing electrode) that forms on back substrate glass substrate 4, the insulation course 6 that forms on back substrate glass substrate 4; Prebasal plate 2 comprises preceding substrate glass substrate 8, form on preceding substrate glass substrate 8 lower surfaces with metacoxal plate 1 on second electrode 9 (column electrode, scan electrode) of 5 one-tenth spatial vertical quadratures of first electrode, the dielectric layer 10 that on the lower surface of second electrode 9, forms, the diaphragm 11 that on preceding substrate glass substrate 8 and dielectric layer 10, forms; Column electrode and row electrode are in vertical distribution after forward and backward substrate assembling is finished; The aperture plate plate 3 that is clipped between the front-back baseboard 1,2 is current-carrying plates (public electrode) that comprise the grid hole array, and it can be a sheet metal, can also be the dielectric-slab that the surface plates metal conducting layer.Mesh on the aperture plate plate is corresponding one by one with the position, point of crossing of column electrode and row electrode, fills the required working gas with certain air pressure in grid hole, just becomes the discharge cell space of this plasma display screen.
Fig. 2 is expressed as grooved plasma display screen electrode relative position distribution synoptic diagram, and two electrodes are respectively to keep electrode (X electrode) on the prebasal plate 2; The orthogonal thereto shape distribution of addressing electrode on the metacoxal plate 1 (A electrode), aperture plate plate 3 form and exchange the subtend discharge mode between front-back baseboard 1,2.
Fig. 3 is the voltage oscillogram of expression grooved plasma display screen driving method example.Fig. 3 represents to constitute a son field of a frame.Carry out erasure discharge and make the uniform restored cycle of each unit mesospore CHARGE DISTRIBUTION, in the unit that will be lighted a fire, produce the addressing period of wall CHARGE DISTRIBUTION and keep lasting luminous the keeping the cycle of wall CHARGE DISTRIBUTION discharge that accumulates between addressing period in the unit thereby each son field comprises according to video data.
In erasing period, at first voltage is imposed on scan electrode X for the triangular wave of-Vs, after full frame wiping.Rise to voltage+Vs pulse with having the gentle slope, wipe the wall electric charge that to wipe fully the front, again voltage is rapidly increased to Vs+Vw, make the micro discharge state that is in of full frame all unit, by the downward composite pulse of voltage all cell erasure are fallen unnecessary wall electric charge again from Vs+Vw to-Vs, the result is all cell discharges that make on all display lines, produces and the irrelevant wall electric charge of last show state.The current potential of address electrode A1 to Am is 0V in this process.
In addressing period, lighted a fire in order to make each unit according to video data, carry out the address discharge line by line.That is to say, the scanning impulse of-Vy level is applied on the scan electrode X1 corresponding with first display line, and simultaneously, the data pulse of voltage Va is applied on the unit selectively, produce the discharge that continues in address electrode A1 to Am, promptly lighted a fire in the unit of address electrode Aj correspondence.In like manner, occur on the scan electrode X1 to Xn corresponding, and new video data is written in all display lines with other display lines.
In the cycle of keeping, the voltage amplitude that is produced by the bipolarity energy recovery circuit be+Vs and-the positive and negative lasting pulse of Vs on X1 Xn of loading scan electrode, addressing electrode A ground connection.To carry out continuous discharge whole keeping between discharge cycle scan electrode X and the addressing electrode A, thereby the video of realizing a son field shows.Be noted that the length of keeping discharge cycle, promptly keep umber of pulse decision luminance video.
From above driving method, as can be seen from Figure 3, in erasing period, addressing electrode A is in ground level (0V) state always.Do not participate in the accumulation of wall electric charge, in order to obtain stable wall electric charge, make full frame in restored cycle, no matter the discharge condition of each unit how in the last son field, even by the wall electric charge that all unit are produced, the driving method of patent of the present invention is exactly in the restored cycle in erasing period, to apply a pulse voltage on the addressing electrode A, will help the accumulation of wall electric charge.
Fig. 4 represents the example of this driving method.Fig. 4 is illustrated in the drive waveforms figure of an erasing period part in the son of appointment.The unit that in last son field, carries out final continuous discharge, positive and negative charge is accumulated in respectively on scan electrode X and the addressing electrode A, in this state, last keeps pulse stopping pulse voltage application immediately after discharge, because of most of charge particle of discharge generation is stayed in the discharge cell space, be adsorbed to because of Electrostatic Absorption on the wall electric charge of dielectric layer in the screen, so just in scan electrode X and addressing electrode A, produce new wall electric charge with the antetheca opposite polarity.With having the erasing pulse and the wall charge interaction that opposite polarity is arranged that the gentle slope drops to voltage-Vs, wipe the wall electric charge in all unit, rise to voltage+Vs pulse with having the gentle slope, wipe the wall electric charge that to wipe fully the front, again voltage is rapidly increased to Vs+Vw, make the micro discharge state that is in of full frame all unit, then apply of the pulse of a voltage with having Ramp Down (the oblique wave pulse downwards) pulse and the corresponding A electrode of gentle slope drop-out voltage for+Vaw from+Vs to-Vs at the X electrode, under the effect of compound field, remove wall electric charge unnecessary in all unit, the result is all cell discharges that make on all display lines, produces and the irrelevant wall electric charge that is evenly distributed of last show state.
Specifically, exactly always the wall electric charge of accumulating in the quilt unit of lighting a fire in last son field is not identical in all unit, so the discharge inception voltage of each unit also changes, in order can to eliminate in the last son by the influence of the wall electric charge of accumulating in the unit of lighting a fire, and can make full frame in each discharge cell enough run up to the driving method of taking with the irrelevant wall electric charge that is evenly distributed of a preceding show state.
Being applied to voltage Vaw on the addressing electrode A and the potential difference (PD) between the voltage in the addressing period in restored cycle can adjust, shown in Fig. 5 A and Fig. 5 B.
Fig. 6 represents another example of this driving method.Fig. 6 is illustrated in the drive waveforms figure of a restored cycle part in the son of appointment.Its difference just is the pulse voltage reference position that applies on the A electrode, on the X electrode from+Vs between-Vs gentle slope drop-out voltage the pulse.Promptly zero-time and the A electrode pulse zero-time to RampDown on the X electrode begins to postpone (the A electrode can change pulsewidth).
Fig. 7 A and Fig. 7 B represent the time dependent pulse waveform of wave form varies rate of A electrode application voltage time per unit.The rate of change of voltage waveform can be linearity or nonlinear.
Claims (7)
1, a kind of driving method for grooved plasma display board, it is characterized in that during the restored cycle of each discharge cell mesospore CHARGE DISTRIBUTION of initialization in the son of each display frame, keeping apply reset pulse on the electrode in, the corresponding pulse voltage that applies on the metacoxal plate addressing electrode, form of the recovery voltage pulse of a new compound reset pulse, make the stabilized uniform wall electric charge that each discharge cell enough runs up to and a preceding show state is irrelevant in full frame as grooved plasma display screen; Describedly apply reset pulse on the electrode and be meant during restored cycle keeping, by having the erasing pulse and the wall charge interaction that opposite polarity is arranged that the gentle slope drops to voltage-Vs to using, wipe the wall electric charge in all unit, rise to voltage+Vs pulse with having the gentle slope, wipe the wall electric charge that to wipe fully the front, again voltage is rapidly increased to Vs+Vw, make full frame all unit be in the micro discharge state, then apply of the pulse of a voltage with having the downward oblique wave pulse of Ramp Down and the corresponding addressing electrode of gentle slope drop-out voltage keeping electrode (X electrode) for+Vaw from+Vs to-Vs, under the effect of compound field, remove wall electric charge unnecessary in all unit, the result is all cell discharges that make on all display lines, produces and the irrelevant wall electric charge that is evenly distributed of last show state.
2, driving method for grooved plasma display board according to claim 1 is characterized in that to apply a voltage with width that has the downward oblique wave pulse of Ramp Down of gentle slope drop-out voltage from+Vs to-Vs and corresponding addressing electrode identical for the pulse width of+Vaw keeping electrode.
3, driving method for grooved plasma display board according to claim 1, the potential difference (PD) that it is characterized in that being applied in restored cycle between the voltage that is applied in voltage+Vaw on the addressing electrode and the addressing period on the addressing electrode is variable.
4, driving method for grooved plasma display board according to claim 1 is characterized in that pulse voltage reference position that applies on the addressing electrode and the zero-time of keeping the downward oblique wave pulse of Ramp Down on the electrode have certain delay.
5, driving method for grooved plasma display board according to claim 1 is characterized in that the voltage that applies on the addressing electrode is the time dependent pulse voltage of wave form varies rate of time per unit.
6, driving method for grooved plasma display board according to claim 5 is characterized in that described time dependent pulse is the linear change waveform.
7, driving method for grooved plasma display board according to claim 5 is characterized in that described time dependent pulse is the nonlinearities change waveform.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710025094 CN100590693C (en) | 2007-07-12 | 2007-07-12 | Driving method for grooved plasma display board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710025094 CN100590693C (en) | 2007-07-12 | 2007-07-12 | Driving method for grooved plasma display board |
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| Publication Number | Publication Date |
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| CN101110196A CN101110196A (en) | 2008-01-23 |
| CN100590693C true CN100590693C (en) | 2010-02-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200710025094 Expired - Fee Related CN100590693C (en) | 2007-07-12 | 2007-07-12 | Driving method for grooved plasma display board |
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Granted publication date: 20100217 Termination date: 20120712 |