CN1171194C - Method of driving plasma display panel - Google Patents
Method of driving plasma display panel Download PDFInfo
- Publication number
- CN1171194C CN1171194C CNB001289756A CN00128975A CN1171194C CN 1171194 C CN1171194 C CN 1171194C CN B001289756 A CNB001289756 A CN B001289756A CN 00128975 A CN00128975 A CN 00128975A CN 1171194 C CN1171194 C CN 1171194C
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- electrode
- discharge
- pdp
- display panel
- discharge sustaining
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/14—Systems for two-way working
- H04N7/141—Systems for two-way working between two video terminals, e.g. videophone
- H04N7/142—Constructional details of the terminal equipment, e.g. arrangements of the camera and the display
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Control Of Gas Discharge Display Tubes (AREA)
Abstract
Provided is a method for driving plasma display panel (PDP), wherein the voltage is maintained through applying a sine wave not a square wave to discharge. The display panel has improved discharge continuity. The common electrodes of the two adjacent continuous discharge electrodes installed on the display panel are combined to be shared and the maintaining voltage is executed continuously through applying a sine wave voltage in the maintained discharge cycle of the display discharge. Thereby, the excellent luminance and driving efficiency are obtained.
Description
Technical field
The present invention relates to a kind of method that is used to drive plasma display panel (PDP), this method by improving electrode structure and dispose the sine voltage rather than the square-wave voltage of continuous discharge, can make this demonstration have improved continuous discharge characteristic.
Background technology
Fig. 1 illustrates the basic structure of PDP of the surface-discharge of common alternating current (AC) formula, wherein forms a discharge space 15 between front glass substrate 11 and back glass substrate 17.In the PDP of this alternating current streaming surface-discharge, scan electrode 12 is insulated layer 13 covering so that insulate with discharge space 15.In this case, keep discharge by known wall charge effect.In the PDP of above-mentioned surface-discharge, addressing electrode 16 is located on the back substrate 17, makes it the scan electrode of forming perpendicular to the electrode (i.e. an X electrode 12a and a Y electrode 12b) that is arranged in parallel with each other on the front glass substrate 11 by two 12.According to this structure, between addressing electrode 16 and scan electrode 12, produce address discharge (being that pixel is selected), afterwards, between X electrode 12a and Y electrode 12b, produce continuous discharge (being display video signal).
Fig. 2 represents the exploded perspective diagrammatic sketch of the PDP of an alternating current streaming three-electrode surface discharge commonly used, among the figure, addressing electrode 16 and a pair of scan electrode 12a and 12b perpendicular to addressing electrode 16 are arranged in the discharge space 15 that is separated into by the dividing plate of being located on the back substrate 17 18.The ultraviolet ray that dividing plate 18 is used for the shielding area electric charge and produces at discharge process, thus both prevented from adjacent image point, to produce cross interference, formed discharge space 15 again.For PDP is used as a color monitor, cross and have a fluorescent material layer 19 that the fluorescent material of red (R), green (G), blue (B) VISIBLE LIGHT EMISSION characteristic is made by the UV-radiation-sensitive that produces in the discharge process, in order to show R, G and B colour, they are repeated to be coated in an orderly manner on the discharge space 15, therefore just can show R, G and B colour.
For the PDP that scribbles fluorescent material that obtains to use, just must realize that gray scale shows as color monitor.At present, a kind ofly a frame image is divided into after a plurality of son the gradation display method that the mode with timesharing drives is widely used.Fig. 3 represents the gradation display method of common alternating current streaming PDP.As shown in Figure 3, in the gradation display method of this common alternating current streaming PDP, a frame image is divided into a plurality of sons, and each son was made up of addressing period and continuous discharge cycle.Here, for example with the explanation that lays down a definition of 6 bit gradation production methods.One frame image temporarily is divided into six son fields, and shows 64 (=28) gray scale.Each son field is made up of addressing period A1-A6 and continuous discharge cycle S1-S6.The principle of expressing with visual luminance factor than principal degree in gray scale utilization continuous discharge cycle shows.In other words, since first son (SF1) to the length of the continuous discharge cycle S1-S6 of the 6th son (SF6) according to such ratio one by one 1: 2: 4: 8: 16: 32, being total up to 64 continuous discharge preiodic types was to form like this, be 0,1 (1T), 2 (2T), 3 (1T+2T), 4 (4T), 5 (1T+4T), 6 (2T+4T), 7 (1T+2T+4T), 8 (8T), 9 (1T+8T), 10 (2T+8T), 11 (3T+8T), 12 (4T+8T), 13 (1T+4T+8T), 14 (2T+4T+8T), 15 (1T+2T+4T+8T), 16 (16T), 17 (1T+16T), 18 (2T+16T) ..., 62 (2T+4T+8T+16T+32T) and 63 (1T+2T+4T+8T+16T+32T).Therefore, just can show 64 gray levels.For example, in order to show 6 gray levels of an arbitrary pixel, have only second son (2T) and the 3rd son (4T) to be addressed.In addition, in order to show 15 gray levels, one to the 4th sub of all mat woven of fine bamboo strips must be addressed.
Fig. 4 realizes the stretch-out view of the AC formula plane discharge PDP electrode structure of gradation display method shown in Figure 3.Here, in the discharge sustaining electrode of being made up of paired horizontal electrode, the electrode that is connected common point is common electrode (X-electrode) 12a, and the electrode of opposite side is scan electrode (a Y-electrode).Common electrode (X-electrode) 12a all is connected in common point, and to the voltage signal that its effect has same waveform as, comprises a continuous discharge pulse.Therefore, the sweep signal of discharge sustaining electrode 12 just acts on the scan electrode, and promptly Y-electrode 12b so just can carry out addressing between Y-electrode 12b and X-electrode 12a.In addition, the continuous discharge pulse action is discharged so that continue to show between Y-electrode 12b and X-electrode 12a.Act on as shown in Figure 5 as the waveform of the drive signal on each electrode of above-mentioned connection.
Fig. 5 represents the oscillogram of the drive signal of alternating current streaming PDP commonly used, and wherein the image demonstration realizes by addressing/display separation (ADS) driving method.In Fig. 5, reference number A represents to act on the drive signal on the addressing electrode, and reference number X represents to act on the drive signal on X-electrode (also the being referred to as common electrode) 12a, and reference number Y1 to Y480 represents to act on the drive signal on each Y-electrode 12b.In a full erase cycle A11, full erasing pulse 22a acts on that to be used for carrying out public electrode (X) 12a that accurate greyscale shows last so that produce strong discharge, therefore produce by the front discharge wipe the wall electric charge just can promote under (the work of step 1) of face field.Then, in a full write cycle time A12 and full erase cycle A13, in order to reduce addressing pulse voltage 21, a full-write pulse 23 acts on the Y-electrode 12b, a full erasing pulse 22b acts on X-electrode 12a and upward writes discharge and a full erasure discharge entirely so that produce one respectively, is controlled at a large amount of wall electric charges (step 2 and 3) of accumulation in the discharge space 15 with this.Then, in addressing period A14, the data that are converted to electric signal are written in (step 4) on the full frame selected location of PDP by using addressing pulse (data pulse) 21 and write pulse 24 cross one another selection discharges between addressing electrode 16 and the scan electrode 12b.
In continuous discharge cycle S1, be presented at the purpose on the screen in order to realize pictorial data, the demonstration discharge that produces by continuous action discharge sustain pulse 25 just continues the time cycle of a setting.In the process in continuous discharge cycle, as shown in Figure 5, apply a square-wave voltage sh.Usually the pulse width of the square-wave voltage that is applied surpasses 2.5 μ s, and its frequency is greater than 100KHz.No matter when apply pulse, continuous discharge as shown in Figure 1 only can produce once.Along with the increase that produces discharge time, brightness will strengthen.Therefore, gray scale just shows and can realize by regulating the discharge sustain umber of pulse that is applied.Yet, as shown in Figure 5,, as shown in Figure 1, will repeat to take place continuous discharge intermittently if the pulse of continuous discharge is to do the time spent with the form of square-wave pulse.Because the color contour effects (falescolored contour effect) of false colour, a kind of like this repetition of discrete continuous discharge will be shown, and just looks like that it recurs.
Summary of the invention
In order to address the above problem, the purpose of this invention is to provide a kind of method that is used to drive plasma display panel (PDP), wherein it produces continuous continuous discharge by improving electrode structure.
Therefore, to achieve these goals, the invention provides a kind of method that is used to drive the plasma display panel of low energy consumption, this display board has the discharge sustaining electrode of being made up of paired scan electrode and public electrode, with be arranged to and this discharge sustaining electrode address electrodes intersecting, described method is characterised in that, the public electrode of two adjacent discharge sustaining electrodes combines so that can be shared, in order to show a frame image, one frame is divided into a plurality of sons field to show its gray level, each son field is by a start cycle, an addressing period and a continuous discharge cycle are formed, and a sine voltage acts on the discharge sustaining electrode in the process in continuous discharge cycle.
In the present invention, act on the phase differential that sine voltage on paired scan electrode and the public electrode preferably has 180 °, its frequency is 1 megahertz or higher than 1 megahertz.And, scan electrode ground connection, frequency is that 1 megahertz or the sine voltage higher than 1 megahertz preferably only act on public electrode.
Description of drawings
Above-mentioned purpose of the present invention and effect combination will become clearer by the detailed description to most preferred embodiment with reference to the accompanying drawings, in the accompanying drawing:
Fig. 1 represents the vertical sectional view of the basic structure of common alternating current streaming (AC) surface discharging plasma displaying panel (PDP);
Fig. 2 represents the decomposition diagram of alternating current streaming (AC) three-electrode surface discharge PDP shown in Figure 1;
Fig. 3 represents the gradation display method of alternating current streaming (AC) three-electrode surface discharge PDP shown in Figure 2;
Fig. 4 is expressed as the stretch-out view of alternating current streaming (AC) the three-electrode surface discharge PDP as shown in Figure 2 that realizes gradation display method shown in Figure 3 and form;
Fig. 5 represents to act on the oscillogram of the drive signal on each electrode shown in Figure 4;
The synoptic diagram of the discharge sustaining electrode of PDP shown in Fig. 6 presentation graphs 2 and 4;
Fig. 7 represents the synoptic diagram according to the employed discharge sustaining electrode of PDP driving method of the present invention;
Fig. 8 represents the synoptic diagram of the whole positions relation between the discharge sustaining electrode shown in Figure 7;
Fig. 9 represents the synoptic diagram according to the employed sinusoidal wave pulse method of PDP driving method of the present invention;
Figure 10 represents the synoptic diagram according to employed another sinusoidal wave pulse method of PDP driving method of the present invention.
Embodiment
Describe driving method in detail referring now to accompanying drawing according to the plasma display panel of low energy consumption of the present invention.
As mentioned above, matrix drive method is often used in displayed image on the flat-panel monitor.According to this method, one group of horizontal direction, in the discharge sustaining electrode that is provided with on promptly identical with the direction of scanning direction and the one group of addressing electrode perpendicular to this group discharge sustaining electrode, select any a pair of level and vertical electrode, picture intelligence will be shown in its point of crossing.And for displayed image on flat-panel monitor, display drives by two steps: an address step and a lasting step display that shows the setting-up time cycle of picture intelligence on the selected pixel of selecting arbitrary pixel on the screen.In PDP commonly used, these two steps realize as the cathode glow discharging of the medium of choosing a pair of level and the discharge space between the vertical electrode wantonly with gas by use.In other words, select a scan electrode and addressing electrode right, a pulse voltage acts on any in the electrode pair at least so that therefore the different electrical property of discharge generation just can select an optional position (pixel) on given screen.Then, pulse voltage acts between the scan electrode so that the generation continuous discharge is converted to picture intelligence the light signal that is shown with this.More specifically, the invention is characterized in that two adjacent common electrode of the discharge sustaining electrode of being made up of paired scan electrode and common electrode are integrated as the electrode of a broad, in the process in continuous discharge cycle, apply a sinusoidal wave pulse voltage, continue one so that drive discharge sustaining electrode and show discharge.
In order to realize feature of the present invention, be constructed as follows according to the electrode of PDP of the present invention.
In the electrode structure of PDP shown in Fig. 2 and 4, mutual two adjacent electrodes, the practical structures of K discharge sustaining electrode and (K+1) individual discharge sustaining electrode is as shown in Figure 6.The structure of these two discharge sustaining electrodes can make an amendment, so that the public electrode (X) of K discharge sustaining electrode and (K+1) individual discharge sustaining electrode combines into an electrode to increase the width of this electrode, as shown in Figure 7.Here, reference number 5 and 6 is represented bus electrode and transparency electrode respectively.If public electrode is shared by adjacent discharge sustaining electrode by this way, the general structure of discharge sustaining electrode just as shown in Figure 8 so.By the discharge sustaining electrode that is provided with as mentioned above, the line number will reduce, and is 480 because several 960 (=480 * 2) of line of public electrode commonly used just reduce one and half.That is to say, the line number just be reduced to 720 (=480+240).
As mentioned above, PDP driving method according to the present invention is characterised in that: PDP acts on the structure that wide common electrode shared by adjacent discharge sustaining electrode and driven by a sinusoidal wave pulse.
Fig. 9 represents the synoptic diagram according to the employed sinusoidal wave pulse method of PDP driving method of the present invention.As shown in drawings, in PDP driving method according to the present invention, have that to differ 180 ° and frequency be that 1MHz or higher sine voltage act on the scan electrode (Y-electrode) and public electrode (X-electrode) that constitutes discharge sustaining electrode, therefore just can produce lasting demonstration and discharge.Like this, continuous discharge will produce continuously, continues to show that the situation of discharge has better brightness effects and driving efficient thereby liken to the generation of rectangular wave voltage.In other words, the continuous discharge state that produces according to square-wave pulse is to be interrupted to repeat, and the continuous discharge state that produces according to sinusoidal wave pulse of the present invention carries out continuously, is therefore demonstrating extraordinary characteristic aspect brightness and the driving efficient.
Figure 10 represents that employed another of PDP driving method according to the present invention adopts the synoptic diagram of sinusoidal wave pulse method.It only acts on public electrode (X-electrode) by the high pressure of sine wave, does not propose the method that a kind continues to show discharge and there is voltage to act on scan electrode (Y-electrode).Here, the frequency of sinusoidal wave pulse more preferably greater than or equal 1MHz.
As mentioned above, in PDP commonly used, the area that can realize two electrodes (scan electrode and public electrode) of continuous discharge is the same mutually, these two electrodes are as negative electrode, the sum of electrode wires is the twice of whole display line sums, compare with PDP commonly used, PDP needs discharge sustaining electrode according to the present invention is 1.5 times of whole show bus.And high-frequency sinusoidal wave pulse is applied on the discharge sustaining electrode as drive signal, and discharge sustaining electrode is divided into negative pole part and anode portion, and public electrode then is taken as anode portion, has therefore avoided discharge to be transferred on the adjacent line.In addition, the width of anode increases to the twice or the more so that area of the plasma panel that forms of expansion of common electrode width on anode portion, can allow that therefore light launches effectively.
Because PDP is a bistable display, gray scale shows that passing through the control discharge cycle just can realize.
As mentioned above, according to PDP driving method of the present invention, the public electrode that is arranged on two adjacent discharge sustaining electrodes on the display board combines so that can be shared, by showing that discharge is to apply a sine voltage in the continuous discharge cycle that continues just can implement continuous discharge continuously, obtains extraordinary brightness effects therefrom and drives efficient.
Claims (3)
1. method that is used to drive the plasma display panel of low energy consumption, this display board has the discharge sustaining electrode of being made up of paired scan electrode and public electrode, with be arranged to and this discharge sustaining electrode address electrodes intersecting, described method is characterised in that, the public electrode of two adjacent discharge sustaining electrodes combines so that can be shared, in order to show a frame image, one frame is divided into a plurality of sons field to show its gray level, each son field is by a start cycle, an addressing period and a continuous discharge cycle are formed, and a sine voltage acts on the discharge sustaining electrode in the process in continuous discharge cycle.
2. in accordance with the method for claim 1, it is characterized in that act on the phase differential that described paired scan electrode and the described sine voltage on the public electrode have 180 °, its frequency is 1 megahertz or higher than 1 megahertz.
3. in accordance with the method for claim 1, it is characterized in that, described scan electrode ground connection, having frequency is that 1 megahertz or the described sine voltage higher than 1 megahertz only act on described public electrode.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019990028201A KR20010009688A (en) | 1999-07-13 | 1999-07-13 | Method for driving a plasma display panel |
| KR28201/1999 | 1999-07-13 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1284700A CN1284700A (en) | 2001-02-21 |
| CN1171194C true CN1171194C (en) | 2004-10-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB001289756A Expired - Fee Related CN1171194C (en) | 1999-07-13 | 2000-07-13 | Method of driving plasma display panel |
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| Country | Link |
|---|---|
| KR (1) | KR20010009688A (en) |
| CN (1) | CN1171194C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4675517B2 (en) * | 2001-07-24 | 2011-04-27 | 株式会社日立製作所 | Plasma display device |
| KR100453170B1 (en) * | 2002-01-25 | 2004-10-15 | 엘지전자 주식회사 | Method And Apparatus Of Driving Radio Frequency Plasma Display Panel |
| KR100452691B1 (en) * | 2002-02-28 | 2004-10-14 | 엘지전자 주식회사 | Apparatus Of Driving Radio Frequency Plasma Display Panel |
| KR20030090370A (en) * | 2002-05-23 | 2003-11-28 | 주식회사 유피디 | 3-electrods surface discharge type AC PDP |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2629944B2 (en) * | 1989-02-20 | 1997-07-16 | 富士通株式会社 | Gas discharge panel and driving method thereof |
| JP3115927B2 (en) * | 1992-01-10 | 2000-12-11 | 富士通株式会社 | Display device |
| JP3156659B2 (en) * | 1998-01-09 | 2001-04-16 | 日本電気株式会社 | Plasma display panel and driving method thereof |
| KR100267547B1 (en) * | 1998-01-17 | 2000-10-16 | 구자홍 | 3-electrode surface discharge plasma display panel |
| KR100289901B1 (en) * | 1998-08-21 | 2001-05-15 | 구자홍 | Plasma Display Panel Driving Method Using High Frequency |
-
1999
- 1999-07-13 KR KR1019990028201A patent/KR20010009688A/en not_active Application Discontinuation
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2000
- 2000-07-13 CN CNB001289756A patent/CN1171194C/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| KR20010009688A (en) | 2001-02-05 |
| CN1284700A (en) | 2001-02-21 |
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Granted publication date: 20041013 Termination date: 20100713 |