CN103198784A - Method for eliminating low discharge occurring at switching moment of display frames - Google Patents
Method for eliminating low discharge occurring at switching moment of display frames Download PDFInfo
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- CN103198784A CN103198784A CN2013101202237A CN201310120223A CN103198784A CN 103198784 A CN103198784 A CN 103198784A CN 2013101202237 A CN2013101202237 A CN 2013101202237A CN 201310120223 A CN201310120223 A CN 201310120223A CN 103198784 A CN103198784 A CN 103198784A
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Abstract
The invention discloses a method for eliminating low discharge occurring at the switching moment of display frames. The method includes: when a plasma display screen switches one frame to another frame, small reset waveforms of black transition frame driving waveforms are adjusted to main reset waveforms. According to the method, a bad phenomenon of low discharge occurring at the switching moment of a PDP display frame is eliminated, and reliability of a plasma displayer is improved.
Description
Technical field
The present invention relates to the plasma display field, eliminate display frame and switching the method that low discharge appears in moment in particular to a kind of.
Background technology
The type of drive of plasma display mainly adopts addressing to separate the method for (Address Display Separated is called for short ADS) with demonstration at present, and drive waveforms comprises reset period, address period and keeps the phase.Reset period is that whole discharge cells are carried out initialization, and purpose is that the state of all discharge cells is consistent.Address period applies the addressing pulse writing display information by scan electrode, and purpose is need to select luminous pixel.The phase of keeping alternately applies by X, Y electrode and keeps pulse signal, and purpose is to make to select luminous pixel lasting luminous.
Plasma panel switches to another width of cloth picture from a width of cloth picture needs N frame black picture (frame number of N representative picture decides according to external signal) to come transition.For example: white picture switches to red picture, wherein just comprises 5 frame black pictures and comes transition.Existing drive waveforms technology comprises two kinds of PDP drive waveforms: master reset (Main Reset is shown in the left figure of Fig. 1) and reset for a short time (Small Reset is shown in the right figure of Fig. 1).The effect of master reset is all discharge cells of initialization (three discharge cells equal a pixel), play the effect of reset (reset), comprise (Ramp-up on the slope, shown in empty frame 1 among Fig. 1) and the slope under (Ramp-down, shown in empty frame 2 among Fig. 1), be weak discharge (Weakdischarge), need 350V ~ 400V voltage discharge cell to discharge; For a short time the effect that resets is the discharge cell (three discharge cells equal a pixel) that initialization is lighted, play the effect that resets, comprise (Ramp-up on the slope, shown in empty frame 3 among Fig. 1) and the slope under (Ramp-down, shown in empty frame 4 among Fig. 1), be weak discharge (Weakdischarge), rated voltage is generally 210V.
As shown in Figure 2, existing drive waveforms technology, the black picture of a frame has only master reset to finish the wall electric charge of discharge and generation some.Weak dark discharge takes place in all pixel cells of master reset Ramp-up, accumulates the wall electric charge of a certain degree, produces some space charges (Y electrode dielectric layer surface accumulation negative charge, A and X electrode dielectric layer surface accumulation positive charge); Faint erasure discharge takes place in master reset Ramp-down, and all pixel cells generate erasure discharge to wipe the space charge that wall electric charge and Ramp-up are generated, and will form the evenly residual wall electric charge that can stablize the generation address discharge.Because the black picture all is to be made of the pixel that does not have addressing, (time of a demonstration is called a son field in all the other son fields, the brightness difference that each height field shows, each son comprise preparatory stage, address period, keep the phase) reset for a short time because can not producing weak discharge, so do not discharge.Namely after the master reset waveform was finished discharge, pixel cell did not have discharge generation in a frame time.The space charge that master reset produces loses at all the other son run durations, (so-called firing voltage is a kind of product attribute and these space charges are to reducing the pixel cell firing voltage, just refer to the minimum driving voltage that plasma display can display frame, make pixel cell finish discharge and the firing voltage that produces space charge and need is 350V ~ 400V), reduces pixel cell discharge time-delay and play crucial effects.Driver automatically switches to colour picture when black transition picture finishes, and drive waveforms is called simultaneously, and the colour picture master reset begins action used pixel cell is carried out reset processing.Because the space charge that black transition picture produces loss is too many, the accumulation of colour picture master reset Ramp-up wall electric charge is influenced, and it is insufficient that space charge produces; The wall electric charge that master reset Ramp-down wipes very little, the pixel cell that causes being addressed the discharge time-delay occurs in address period, the accumulation of wall electric charge is not enough, directly influenced the master reset discharge effect of colour picture, performance at colour picture is exactly that low discharge is bad, influences the display effect of plasma panel.
In the prior art, bad in order to eliminate the low discharge that plasma panel occurs in image switching moment, the mode that adopts the rising scanning voltage usually or shorten the Ramp-down waveform realizes.But scope, the effect adjusted have certain limitation, probably cause the circuit board inefficacy problem that deadlock, shutdown etc. influence product quality to occur if adjust off-rating.
In order to improve the reliability of plasma display, avoid adjusting the parameter of pcb board as far as possible, the present invention is directed to the problem that plasma panel low discharge occurs in image switching moment and proposed a kind of removing method.
Summary of the invention
The technical problem to be solved in the present invention provides a kind ofly to be eliminated display frame and is switching the method that low discharge appears in moment, improves the reliability of plasma display.
In order to address the above problem, to the invention provides and a kind ofly eliminate display frame and switching the method that low discharge appears in moment.This method comprises: when plasma panel switches to another width of cloth picture from a width of cloth picture, the little reset wave of black transition picture drive waveforms is adjusted into the master reset waveform.
Preferably, adjust the reset period waveform of last height field of last frame black transition picture, the little reset wave of the reset period waveform of last height field is adjusted into the master reset waveform.
Preferably, adjust the little reset wave of two or more son fields at random, little reset wave is adjusted into the master reset waveform.
Preferably, described master reset waveform voltage scope is set between 350V ~ 400V.Weak discharge can produce abundant space ion like this.
Said method has avoided adjusting the traditional method of pcb board parameter, by adjusting the black transition picture drive waveforms that arranges for plasma display specially, reduce the pixel cell firing voltage, reduce the discharge delay time of address period, the pixel cell generation is stablized keep discharge normally, thereby improved the reliability of plasma display.
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 for explaining the present invention, do not constitute improper restriction of the present invention.
Fig. 1 shows existing two kinds of PDP drive waveforms;
Fig. 2 shows existing drive waveform technology synoptic diagram;
Fig. 3 shows the synoptic diagram of a frame black transition picture;
Fig. 4 shows the synoptic diagram that in the embodiment Small Reset waveform is adjusted into Main Reset waveform;
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, hereinafter will be elaborated to embodiments of the invention by reference to the accompanying drawings.Need to prove that under the situation of not conflicting, the embodiment among the application and the feature among the embodiment be combination in any mutually.
As shown in Figure 4, this embodiment shows employing the method for the invention, eliminates the plasma display picture and switches a kind of example that low discharge appears in moment.Specific practice is: adjust last frame black transition picture, the reset period waveform of last height field is adjusted into Main Reset waveform with Small Reset waveform.Wherein scope is set is 350V to 400V to Main Reset waveform voltage.
In the above-described embodiments, described little reset wave with black transition picture drive waveforms is adjusted into the master reset waveform, can also for: adjust at random two or more the son little reset wave, little reset wave is adjusted into the master reset waveform.
In the above-described embodiments, Small Reset waveform is adjusted into Main Reset waveform, the discharge time that increases all the other son fields causes more Small Reset waveform can become the Main Reset waveform of direct discharge, thereby produces the more space electric charge.These space charges all play crucial effects for reduction pixel cell firing voltage, minimizing discharge delay time, the black field brightness of lifting.The improvement of above-mentioned three elements, macro manifestations are exactly that low discharge no longer appears in plasma display in the picture handoff procedure.By said method, do not adopting the rising scanning voltage or shortening under the situation of Ramp-down waveform, low discharge to occur bad switching moment to have eliminated PDP display frame, improved the stability of plasma display.
The above only is the preferred embodiments of the present invention.The present invention program is not limited to the plasma display field, its associative mode can be applied in other demonstration field.
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 doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (4)
1. eliminate display frame and switching the method that low discharge appears in moment for one kind, it is characterized in that: when plasma panel switches to another width of cloth picture from a width of cloth picture, the little reset wave of black transition picture drive waveforms is adjusted into the master reset waveform.
2. the method for claim 1, its feature also comprises: described little reset wave with black transition picture drive waveforms is adjusted into the master reset waveform, refer to adjust the reset period waveform of last height field of last frame black transition picture, the little reset wave of the reset period waveform of last height field is adjusted into the master reset waveform.
3. the method for claim 1, its feature also comprises: described little reset wave with black transition picture drive waveforms is adjusted into the master reset waveform, can also little reset wave be adjusted into the master reset waveform for adjusting the little reset wave of two or more son fields at random.
4. as arbitrary described method in the claim 1 to 3, its feature also comprises: described master reset waveform voltage scope is set to 350V between the 400V.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013101202237A CN103198784A (en) | 2013-04-09 | 2013-04-09 | Method for eliminating low discharge occurring at switching moment of display frames |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013101202237A CN103198784A (en) | 2013-04-09 | 2013-04-09 | Method for eliminating low discharge occurring at switching moment of display frames |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103854591A (en) * | 2014-03-06 | 2014-06-11 | 四川虹欧显示器件有限公司 | Plasma display device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020171369A1 (en) * | 2001-05-16 | 2002-11-21 | Samsung Sdi Co., Ltd. | Plasma display panel driving method and apparatus capable of realizing reset stabilization |
| JP2006091295A (en) * | 2004-09-22 | 2006-04-06 | Matsushita Electric Ind Co Ltd | Driving method of plasma display panel |
| CN101246665A (en) * | 2007-02-12 | 2008-08-20 | Lg电子株式会社 | Method for driving plasma display device |
| CN102024417A (en) * | 2010-12-29 | 2011-04-20 | 四川虹欧显示器件有限公司 | Method for preventing false electric discharge of PDP (plasma display panel) screen |
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2013
- 2013-04-09 CN CN2013101202237A patent/CN103198784A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020171369A1 (en) * | 2001-05-16 | 2002-11-21 | Samsung Sdi Co., Ltd. | Plasma display panel driving method and apparatus capable of realizing reset stabilization |
| JP2006091295A (en) * | 2004-09-22 | 2006-04-06 | Matsushita Electric Ind Co Ltd | Driving method of plasma display panel |
| CN101246665A (en) * | 2007-02-12 | 2008-08-20 | Lg电子株式会社 | Method for driving plasma display device |
| CN102024417A (en) * | 2010-12-29 | 2011-04-20 | 四川虹欧显示器件有限公司 | Method for preventing false electric discharge of PDP (plasma display panel) screen |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103854591A (en) * | 2014-03-06 | 2014-06-11 | 四川虹欧显示器件有限公司 | Plasma display device |
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Application publication date: 20130710 |