CN103903555A - Ramp up waveform driving method in reset period of plasma display panel - Google Patents
Ramp up waveform driving method in reset period of plasma display panel Download PDFInfo
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- CN103903555A CN103903555A CN201410123778.1A CN201410123778A CN103903555A CN 103903555 A CN103903555 A CN 103903555A CN 201410123778 A CN201410123778 A CN 201410123778A CN 103903555 A CN103903555 A CN 103903555A
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Abstract
The invention belongs to the technical field of plasma display panel driving, and particularly relates to a ramp up waveform driving method in a reset period of a plasma display panel. The ramp up waveform driving method in the reset period of the plasma display panel aims to solve the problems in the prior art. According to the ramp up waveform driving method in the reset period of the plasma display panel, ramp up waveforms which are commonly used at present are interspersed with one or more level waveforms. The ramp up waveform driving method in the reset period of the plasma display panel can reduce the number of priming (space charge) ions in a unit, is beneficial to wall charge accumulation in the reset period, improves discharging consistency of units of the plasma display panel, and can effectively avoid strong discharging and error discharging of an addressing device in the reset period. According to the ramp up waveform driving method in the reset period of the plasma display panel, an infrared detector is connected with an oscilloscope so as to measure ramp up waveform driving waveform discharging situations in the reset period of the plasma display panel; in the reset period, the ramp up waveforms are interspersed with at least one level waveform.
Description
Technical field
The application belongs to plasma display Driving technique field, especially relates to a kind of slope rising waveform driving method of plasma scope reset period.
Background technology
Plasma display (PDP) is one of flat-panel monitor of current main flow, and it is involuted by front-back baseboard.On prebasal plate, made multipair show electrode pair parallel to each other, each show electrode to by one group of scan electrode (Y electrode) with maintain electrode (X electrode) and form, show electrode on be coated with dielectric layer and protective seam.Make multiple data electrodes parallel to each other (A electrode) at metacoxal plate, on it, be coated with dielectric layer, on dielectric layer, be manufactured with barrier, and apply fluorescent powder.The mode of intersecting according to show electrode pair and data electrode, by sealing after front-back baseboard contraposition, pours discharge gas, forms discharge cell (as shown in Figure 1) at show electrode pair with the opposed part of data electrode.
The type of drive of plasma display mainly adopts addressing and shows the method (ADS) separating at present, and drive waveforms comprises reset period, address period and maintenance phase (as shown in Figure 2).Reset period: by ramp waveform, screen is applied to higher voltage, make all discharge cells produce electric discharge, and make each unit before address period starts, discharge condition reaches unanimity as far as possible, and the impact of reset period waveform article on plasma discharge condition is larger.Address period: Y electrode applies scanning impulse, and the unit that needs are lighted applies addressing pulse signal at A electrode, makes the unit that need to light produce electric discharge, and again accumulates wall electric charge, so that maintenance phase regular picture.Maintenance phase: adopt energy recovery circuit to realize the high-voltage pulse waveform replacing between X/Y, the unit continuous discharge that need light is luminous.
Figure 3 shows that the reset period Ramp Up drive waveforms that current plasma display uses, during a Ramp Up in Ramp Up switch one direct-open, the shape of Ramp Up output waveform remains unchanged.
Ramp Up initial segment, on Y electrode, Ramp Up voltage is lower, the voltage between Vy-x(Y electrode and X electrode) be less than the firing voltage of unit, do not discharge.Along with Ramp Up voltage raises, after the firing voltage of Vy-x arrival unit, there is continuous weak discharge.
Use current Ramp Up design waveform, in the time that plasma display discharge delay is larger, to cause reset period Ramp Up to occur strong electric discharge (as shown in Figure 4) and accumulate more space charge, be unfavorable for reset period wall charge accumulated, affect plasma display cell discharge consistance, cause the generation of the strong electric discharge of reset period and addressing device mistake discharge failure.
Summary of the invention
Technical matters to be solved by this invention is: for the problem of above-mentioned existence, a kind of slope rising waveform driving method of plasma scope reset period is provided, the application's technical characterstic is effectively to avoid reset period to occur strong electric discharge, thereby improves the consistance of the each cell discharge of plasma.The present invention is at present conventional Ramp Up waveform, interspersed one or more levels (level) waveform, this is designed with and is beneficial to reset period wall charge accumulated, improves plasma display cell discharge consistance, can effectively avoid the strong electric discharge of reset period and addressing device to misplace electric generation.
The technical solution used in the present invention is as follows:
The slope rising waveform driving method of plasma scope reset period, is characterized in that comprising:
Step 1: the slope rising waveform drive waveforms discharge scenario that connects oscillograph testing plasma volumetric display reset period with infrared eye;
Step 2: in reset period, rise on the slope on the basis of waveform interspersed at least one horizontal waveform.
Further, described horizontal waveform length is that X is that 0.5us is to 20us.
Further, in the slope rising waveform of described reset period, interspersed multiple horizontal waveforms, between each horizontal waveform, the time interval is that 0.5us is to 20us.
Further, in described multiple horizontal waveforms, each horizontal waveform length is identical or different, and the interval between each horizontal waveform is identical or different.
In sum, owing to having adopted technique scheme, the invention has the beneficial effects as follows:
Slope rising waveform driving voltage raises gradually and reaches after the firing voltage of unit, and continuous weak discharge occurs slope rising waveform voltage.In the time that plasma display discharge delay is larger, for example use high light efficiency display screen (high Xe content), slope rising waveform drives sparking voltage to increase, and strong electric discharge appears in reset period slope rising waveform, be unfavorable for the accumulation of reset period wall electric charge, cause address discharge bad.Interspersed horizontal waveform in the rising waveform of slope, slope rising waveform driving voltage rising (Δ V) minimizing in identical discharge delay time, sparking voltage reduces, and avoids interior appearance of reset period slope rising waveform to discharge by force.
Brief description of the drawings
Examples of the present invention will be described by way of reference to the accompanying drawings, wherein:
Fig. 1 plasma display electrode structure.
Fig. 2 plasma display drive waveforms schematic diagram.
Fig. 3 plasma display Ramp up drive waveforms schematic diagram.
Fig. 4 plasma display reset period Ramp up is put a delay and is occurred strong electric discharge schematic diagram.
Reset period Ramp up after Fig. 5 ionic medium display of the present invention improves drives schematic diagram.
Fig. 6 one embodiment of the invention schematic diagram.
Fig. 7 slope of the present invention rising waveform driving circuit schematic diagram.
Embodiment
Disclosed all features in this instructions, or step in disclosed all methods or process, except mutually exclusive feature and/or step, all can combine by any way.
Disclosed arbitrary feature in this instructions (comprising any accessory claim, summary and accompanying drawing), unless narration especially all can be replaced by other equivalences or the alternative features with similar object.,, unless narration especially, each feature is an example in a series of equivalences or similar characteristics.
Related description of the present invention:
1, slope is the angle of waveform and transverse axis (transverse axis).
2, as shown in Figure 7, slope rising waveform driving circuit (slope rising waveform): when Q410 opening, slope rising waveform driving circuit output voltage rises; When switching tube Q410 closed condition, slope rising waveform driving circuit voltage constant (the emitter output of switching tube Q410, i.e. horizontal output).By adjusting the size of slide rheostat VR401 resistance, can control the time that Q410 closes and opens, VR401 resistance hour, Q410 base voltage little (dividing potential drop is little), the Q410 shut-in time is long, and slope rising waveform driving circuit output voltage gradient is low; Otherwise when VR401 resistance is large, Ramp-up output voltage gradient is high.Q410 collector connects power supply, and Q410 emitter is slope rising waveform driving circuit output terminal.
Embodiment mono-, in the time there is 6 horizontal waveforms in slope rising waveform in reset period, reset phase slope rising waveform 30us altogether.Start interval 15us from reset period slope rising waveform, occur first horizontal waveform (length is 0.5us); And then interval 1us, there is second horizontal waveform (length is 0.5us); , there is the 3rd horizontal waveform (length 0.5us) in then interval 1us, and then interval 1us, occurs the 4th horizontal waveform (length is 0.5us); , there is the 5th horizontal waveform (length 0.5us) in then interval 1us, the 6th horizontal waveform (length 0.5us) appears in then interval 1us.As Fig. 6.
The present invention is not limited to aforesaid embodiment.The present invention expands to any new feature or any new combination disclosing in this manual, and the arbitrary new method disclosing or step or any new combination of process.
Claims (4)
1. the slope rising waveform driving method of plasma scope reset period, is characterized in that comprising:
Step 1: the slope rising waveform drive waveforms discharge scenario that connects oscillograph testing plasma volumetric display reset period with infrared eye;
Step 2: in reset period, rise on the slope on the basis of waveform interspersed at least one horizontal waveform.
2. the slope rising waveform driving method of plasma scope reset period according to claim 1, is characterized in that described horizontal waveform length is that 0.5us is to 20us.
3. the slope rising waveform driving method of plasma scope reset period according to claim 1 and 2, it is characterized in that on rising waveform basis, described reset period slope, interspersed multiple horizontal waveforms, between each horizontal waveform, the time interval is that 0.5us is to 20us.
4. the slope rising waveform driving method of plasma scope reset period according to claim 3, is characterized in that in described multiple horizontal waveform, each horizontal waveform length is identical or different, and the interval between each horizontal waveform is identical or different.
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| CN201410123778.1A CN103903555A (en) | 2014-03-31 | 2014-03-31 | Ramp up waveform driving method in reset period of plasma display panel |
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| CN201410123778.1A CN103903555A (en) | 2014-03-31 | 2014-03-31 | Ramp up waveform driving method in reset period of plasma display panel |
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Citations (7)
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| CN1326582A (en) * | 1998-09-04 | 2001-12-12 | 松下电器产业株式会社 | Driving method and apparatus for plasma display panel with high image quality and high luminous efficiency |
| CN1591544A (en) * | 2003-05-14 | 2005-03-09 | 三星Sdi株式会社 | Plasma display panel and method for driving the same |
| CN1783178A (en) * | 2004-12-01 | 2006-06-07 | Lg电子株式会社 | Driving method for plasma display panel |
| CN101051437A (en) * | 2006-04-06 | 2007-10-10 | Lg电子株式会社 | Plasma display apparatus and driving method of plasma display apparatus |
| CN101127173A (en) * | 2006-08-16 | 2008-02-20 | Lg电子株式会社 | Plasma display apparatus |
| KR20090043311A (en) * | 2007-10-29 | 2009-05-06 | 엘지전자 주식회사 | Plasma display apparatus |
| CN101548304A (en) * | 2006-12-05 | 2009-09-30 | 松下电器产业株式会社 | Plasma display device, and its driving method |
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2014
- 2014-03-31 CN CN201410123778.1A patent/CN103903555A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1326582A (en) * | 1998-09-04 | 2001-12-12 | 松下电器产业株式会社 | Driving method and apparatus for plasma display panel with high image quality and high luminous efficiency |
| CN101859528A (en) * | 1998-09-04 | 2010-10-13 | 松下电器产业株式会社 | The driving method of plasma display panel and image display device |
| CN1591544A (en) * | 2003-05-14 | 2005-03-09 | 三星Sdi株式会社 | Plasma display panel and method for driving the same |
| CN1783178A (en) * | 2004-12-01 | 2006-06-07 | Lg电子株式会社 | Driving method for plasma display panel |
| CN101051437A (en) * | 2006-04-06 | 2007-10-10 | Lg电子株式会社 | Plasma display apparatus and driving method of plasma display apparatus |
| CN101127173A (en) * | 2006-08-16 | 2008-02-20 | Lg电子株式会社 | Plasma display apparatus |
| CN101548304A (en) * | 2006-12-05 | 2009-09-30 | 松下电器产业株式会社 | Plasma display device, and its driving method |
| KR20090043311A (en) * | 2007-10-29 | 2009-05-06 | 엘지전자 주식회사 | Plasma display apparatus |
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Application publication date: 20140702 |