CN103871351A - Plasma display equipment capable of eliminating discharge difference and driving method - Google Patents
Plasma display equipment capable of eliminating discharge difference and driving method Download PDFInfo
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- CN103871351A CN103871351A CN201410079383.6A CN201410079383A CN103871351A CN 103871351 A CN103871351 A CN 103871351A CN 201410079383 A CN201410079383 A CN 201410079383A CN 103871351 A CN103871351 A CN 103871351A
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Abstract
The invention discloses plasma display equipment capable of eliminating discharge difference. The plasma display equipment comprises a scanning electrode, an addressing electrode, a sustaining electrode and a driver which is used for applying driving waveform, wherein the driver applies the following driving waveform: the waveform of sustaining voltage with gradually ascending step-shaped waveform is lower than that of reference voltage in the waveform at a restoration stage of the driving waveform in a subfield. A driving method is characterized in that the waveform of the sustaining voltage with the gradually ascending step-shaped waveform is lower than that of the reference voltage in the waveform at the restoration stage of the driving waveform in the subfield. According to the discharge principle of plasmas, by adjusting waveform design to accurately control the discharge of the plasmas and the intensity of the discharge at each period of time, the uniformity of entire screen discharge is realized and the displayed image abnormality is eliminated.
Description
Technical field
The application belongs to PDP(plasma scope) drive waveforms technical field, relate in particular to a kind of plasma display panel device and driving method of eliminating electric discharge difference.
Background technology
In PDP barrier (BR) manufacturing process, because the difference such as granularity, dispersion homogeneity of barrier powder can cause the local appearance of barrier concavo-convex; In barrier size spraying process, because spacing difference of nozzle and substrate etc. causes the thickness of barrier to depart from normal range.Barrier operation is in the time carrying out AOI inspection to this type of screen, because of the design of checkout facility and check that the limitation of principle causes undetectedly continue can not get effective improvement, local concavo-convex or partially thin/thick screen of a lot of barriers has flow to lights a lamp, and shows as the electricity that misplaces of speck (CU), bright spot (CD) formula lighting a lamp.
The badness screen of this type of phenomenon can not be repaired it and also cannot improve by heavy industry after lighting a lamp, and is scrap products by the criterion of lighting a lamp, and must scrap processing.Lighting a lamp or the bad ratio of module for reducing screen, according to the discharge principle of screen and Waveform Control principle, the electric discharge of screen is accurately being controlled, reaching the object of improvement, reducing scrapping of bad product.
Summary of the invention
For addressing the above problem, the invention provides a kind of plasma display panel device of eliminating electric discharge difference, comprise scan electrode, addressing electrode, maintain electrode, for applying the driver of drive waveforms,
Wherein said driver applies following drive waveforms: in a subfield, in described drive waveforms reset period waveform, the stepped waveform of rising maintain voltage waveform lower than reference voltage.
Further, the amplitude that maintains voltage drop makes the time of the stepped waveform of rising extend 2 ~ 5 subfields on the stepped waveform time basis of standard rising.
Further, described drive waveforms applies in first first subfield of frame picture.
The driving method of the plasma display panel device of above-mentioned elimination electric discharge difference is: in described drive waveforms reset period waveform, the stepped waveform of rising maintains voltage lower than reference voltage.
Further, the amplitude that maintains voltage drop makes the time of the stepped waveform of rising extend 2 ~ 5 subfields on the stepped waveform time basis of standard rising.
Further, described drive waveforms applies in first first subfield of frame picture.
Beneficial effect of the present invention is:
The present invention, according to isoionic discharge principle, accurately controls the intensity of plasma in electric discharge and the electric discharge of each time period by adjusting Waveform Design, thereby realizes the homogeneity of whole screen electric discharge, eliminates display frame abnormal.
Adopt the present invention, the concavo-convex picture causing of barrier misplaces electricity and changes disappearance completely, improves successful.Effect of the present invention is remarkable, has great economic worth.
Accompanying drawing explanation
Fig. 1 is the waveform comparison diagram of embodiment 1 and prior art.
Fig. 2 is the waveform comparison diagram of embodiment 2 and prior art.
Fig. 3 is the waveform comparison diagram of embodiment 3 and prior art.
Fig. 4 is the waveform comparison diagram of embodiment 4 and prior art.
Embodiment
A kind of plasma display panel device of eliminating electric discharge difference comprises scan electrode, addressing electrode, maintains electrode, for applying the driver of drive waveforms.Plasma panel is realized electric discharge need to rely on inner wall electric charge, the abnormal generation of the generation of discharge failure and wall electric charge and wipe closely bound up, the adjusting of drive waveforms is exactly in the distribution accumulation of adjusting screen inner wall charge, to realize the object of eliminating discharge failure.What use at present is that ADS addressing the most widely separates (Address Display Separate) drive waveforms technology with demonstration, and described drive waveforms is divided into reset period, address period and maintenance phase.
Reset period is as the Part I of drive waveforms, and its effect is all discharge cells of initialization, plays the effect that makes the homogenization of each cell-wall electric charge.Reset period mainly uses gentle slope waveform, and rising edge/negative edge slope is less, is weak discharge, is beneficial to the accurate control of wall electric charge.
Address discharge is immediately following reset period waveform, and it is according to view data, and making needs to form address discharge after luminous unit accumulation wall electric charge.Before address discharge, Y voltage can be got back to compared with low level position, in order to carry out the loss of address discharge and minimizing wall electric charge.Electric discharge first occurs between Y ~ A, then brings out the electric discharge between X ~ Y, and the wall electric charge accumulating on X electrode to be maintenance phase electric discharge improved condition.
Maintenance phase, X, Y electrode alternately apply high voltage, carry out surface type and discharge by force.Mainly the power consumption part of PDP, i.e. main fluorescent lifetime during this period of time.
One frame picture disply is divided into 10 subfields, and the time of a demonstration is called a subfield, the brightness difference that each subfield shows, and each subfield comprises reset period, address period, maintenance phase.Waveform improves and driving voltage is carried out to meticulous control, to realize the meticulous control to screen electric discharge, thereby realizes the improvement to discharge failure.According to waveform principle, misplace electric waveform and improve and can carry out from following three aspects::
Embodiment 1:
As shown in Figure 1, the time of the stepped waveform of first slow decreasing extends 2 ~ 5 subfields on the stepped waveform time basis of standard slow decreasing.Its principle is: the negative wall electric charge of part accumulation of pruning after the stepped waveform of first slow decreasing lengthens, allows address period not produce and misplace electricity.
Embodiment 2:
As shown in Figure 2, the time of the stepped waveform of first rising extends 2 ~ 5 subfields on the stepped waveform time basis of standard rising.Its principle is: driving voltage is in the process of rising, constantly carry out weak discharge, Y electrode can accumulate abundant negative charge, for the normal operation of follow-up reset period waveform creates favorable conditions, make all discharge cells can reach consistent discharge condition, in order to reduce, MD is bad to create conditions, and to be that MD is bad improve macro manifestations.
Embodiment 3:
As shown in Figure 3, the magnitude of voltage that maintains voltage that reduces the stepped waveform of first rising arrives lower than its reference voltage value, and its reference voltage value is 205 ± 3 V.
Embodiment 4:
The magnitude of voltage that maintains voltage that promotes as shown in Figure 4 the stepped waveform of first slow decreasing arrives higher than its reference voltage, and its reference voltage is-150V ~-170V.
The principle of embodiment 3 and embodiment 4 is: its principle is: single with regard to waveform, lengthening the stepped waveform of first rising or the stepped waveform of first slow decreasing is equivalent to translation to make it near dotted portion in Fig. 3 or Fig. 4, and the realization of this process must be to maintain voltage as carrier, reduce and maintain voltage, make all discharge cells can reach consistent discharge condition, thereby make that MD is bad to improve.Certainly, maintaining the amplitude of voltage rising or the amplitude of decline should make the time of stepped waveform of rising or the stepped waveform of slow decreasing on standard time basis, extend 2 ~ 5 subfields.
Embodiment 1 and embodiment 2 conventionally implement and do not implement in the section of lighting a lamp at module set section, and making after module directly because of screen can be by regulating the potentiometer on Y plate realize, and bothers very much and easy to operate and not continuous production in the section of lighting a lamp adjusting.Reduction described in embodiment 3,4 maintains voltage, the magnitude of voltage that maintains voltage that raises is all easy to realization at module and the section of lighting a lamp, module set section can be by regulating the potentiometer on power panel to realize, and lighting a lamp and can regulate continuously by operation interface, very convenient operation.
Exist while misplacing electricity for part or region, the inspection meeting of lighting a lamp checks that by reducing Vs voltage judges the grade whether electricity conforms with the regulations that misplaces of this screen, distinguishes accordingly and does corresponding processing, is convenient to the assembling of module set section.
Beneficial effect of the present invention is:
The present invention, according to isoionic discharge principle, accurately controls the intensity of plasma in electric discharge and the electric discharge of each time period by adjusting Waveform Design, thereby realizes the homogeneity of whole screen electric discharge, eliminates display frame abnormal.
Adopt the present invention, the concavo-convex picture causing of barrier misplaces electricity and changes disappearance completely, improves successful.Effect of the present invention is remarkable, has great economic worth.
Claims (6)
1. a plasma display panel device of eliminating electric discharge difference, is characterized in that, comprises scan electrode, addressing electrode, maintains electrode, for applying the driver of drive waveforms,
Wherein said driver applies following drive waveforms: in a subfield, in described drive waveforms reset period waveform, the stepped waveform of rising maintain voltage waveform lower than reference voltage.
2. the plasma display panel device of elimination electric discharge difference as claimed in claim 1, is characterized in that, the amplitude that maintains voltage drop makes the time of the stepped waveform of rising extend 2 ~ 5 subfields on the stepped waveform time basis of standard rising.
3. the plasma display panel device of elimination electric discharge difference as claimed in claim 1 or 2, is characterized in that, described drive waveforms applies in first first subfield of frame picture.
4. the driving method of the plasma display panel device of the electric discharge of the elimination as described in claim 1 or 2 or 3 difference, is characterized in that, in described drive waveforms reset period waveform, the stepped waveform of rising maintains voltage lower than reference voltage.
5. the driving method of the plasma display panel device of elimination electric discharge difference as claimed in claim 4, it is characterized in that, the amplitude that maintains voltage drop makes the time of the stepped waveform of rising extend 2 ~ 5 subfields on the stepped waveform time basis of standard rising.
6. the plasma display panel device of the electric discharge of the elimination as described in claim 4 or 5 difference, is characterized in that, described drive waveforms applies in first first subfield of frame picture.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410079383.6A CN103871351A (en) | 2014-03-06 | 2014-03-06 | Plasma display equipment capable of eliminating discharge difference and driving method |
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| CN201410079383.6A CN103871351A (en) | 2014-03-06 | 2014-03-06 | Plasma display equipment capable of eliminating discharge difference and driving method |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002366092A (en) * | 2001-06-12 | 2002-12-20 | Matsushita Electric Ind Co Ltd | Plasma display device |
| EP1383102A2 (en) * | 2002-07-16 | 2004-01-21 | Lg Electronics Inc. | Method and apparatus for a driving plasma display panel having a non-display area |
| CN1828705A (en) * | 2005-02-28 | 2006-09-06 | 富士通日立等离子显示器股份有限公司 | Plasma display device and driving method thereof |
| CN101356560A (en) * | 2006-08-10 | 2009-01-28 | 松下电器产业株式会社 | Plasma display device and plasma display panel drive method |
| CN101375325A (en) * | 2006-11-15 | 2009-02-25 | 松下电器产业株式会社 | Plasma display panel driving method and plasma display device |
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2014
- 2014-03-06 CN CN201410079383.6A patent/CN103871351A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002366092A (en) * | 2001-06-12 | 2002-12-20 | Matsushita Electric Ind Co Ltd | Plasma display device |
| EP1383102A2 (en) * | 2002-07-16 | 2004-01-21 | Lg Electronics Inc. | Method and apparatus for a driving plasma display panel having a non-display area |
| CN1828705A (en) * | 2005-02-28 | 2006-09-06 | 富士通日立等离子显示器股份有限公司 | Plasma display device and driving method thereof |
| CN101356560A (en) * | 2006-08-10 | 2009-01-28 | 松下电器产业株式会社 | Plasma display device and plasma display panel drive method |
| CN101375325A (en) * | 2006-11-15 | 2009-02-25 | 松下电器产业株式会社 | Plasma display panel driving method and plasma display device |
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Application publication date: 20140618 |