CN1855190A

CN1855190A - Plasma display apparatus and image processing method thereof

Info

Publication number: CN1855190A
Application number: CNA2006100092348A
Authority: CN
Inventors: 金元在; 赵起德; 李城任; 金敏洙
Original assignee: LG Electronics Inc
Current assignee: LG Electronics Inc
Priority date: 2005-04-27
Filing date: 2006-02-15
Publication date: 2006-11-01
Anticipated expiration: 2026-02-15
Also published as: CN100552760C; KR20060114130A; KR100645783B1

Abstract

A plasma display apparatus is disclosed to prevent an erroneous discharge when a plasma display panel is driven and drive the plasma display panel at a high speed. The plasma display apparatus comprises a plasma display panel (PDP) comprising a scan electrode, a sustain electrode and an address electrode, a scan driver for applying a set-up waveform which rises up to a first voltage at a first slope and then rises up to a second voltage at a second slope to the scan electrode during a reset period, and an address driver for applying a first positive polarity pulse to the address electrode while the set-up waveform is being applied to the scan electrode.

Description

Plasma display panel device and image processing method thereof

Technical field

The present invention relates to display device, particularly plasma display panel device.

Background technology

Usually, plasma display panel device is a kind of display device that comprises the plasma display panel (PDP) that is used for display image and be used to drive the driver of this PDP.

In this PDP, work as inert mixed gas, when being discharged such as helium-xenon (He-Xe), helium-neon (He-Ne) or the like, vacuum ultraviolet is produced with the irradiation fluorescent material, thereby allows display image.

This plasma display device can have a film, and enlarges aspect size easily, and because recent technical development has improved its picture quality.

Fig. 1 illustrates the structure of the PDP of correlation technique.

As shown in Figure 1, this PDP connects front panel 100 and rear panel 110 formations by paralleling with certain distance betwixt, this front panel 100 comprises preceding substrate 101, promptly, image is shown display surface thereon, arranges a plurality of electrodes of keeping that comprise a pair of scan electrode 102 and keep electrode 103 in this preceding substrate 101, and this rear panel 110 comprises back substrate 111, form a rear surface, arrange a plurality of addressing electrodes 113 thereon with certain distance parallel intersection these a plurality of electrode of keeping betwixt.

This front panel 100 comprises scan electrode 102 and keeps electrode 103, be used for carrying out discharge mutually and keeping the luminous of this unit at individual unit, promptly, this scan electrode 102 and keep electrode 103 each is comprised transparency electrode of being made by transparent ITO material (a) and the bus electrode of being made by metal material (b).This scan electrode 102 and keep electrode by at least one (more than) go up dielectric layer 104 and protective seam 105 is covered; should go up dielectric layer 104 restriction discharge current and these electrode pairs that insulate, this protective seam 105 is to form by deposition of magnesium (MgO) on the upper surface of dielectric layer on this 104.

On this rear panel 110, the barrier rib 112 of a plurality of stripe shapes of parallel arrangement (perhaps well type), forming a plurality of discharge spaces, that is, and discharge cell.In addition, a plurality ofly be used to produce vacuum ultraviolet addressing electrode 113 by with respect to these barrier rib 112 parallel arrangements by carrying out address discharge.Be used for during this address discharge, sending the upper surface that visible light is painted on this rear panel 110 with the R, the G that show an image and B fluorescent material 114.Be used to protect the following dielectric layer 115 of this addressing electrode 113 to be formed between this addressing electrode 113 and this fluorescent material 114.

Fig. 2 illustrates a kind of method of gray level of the plasma display panel device that is used to realize correlation technique.

As shown in Figure 2, with regard to a kind of method of gray level of the image that is used to represent the correlation technique plasma display panel device, frame be divided into some each have the son (sub-field) of different fluorescent lifetime quantity, and each son field is divided into and is used for once more the reset cycle of each unit of initialization (RPD), be used to select the addressing period (APD) of the unit that will discharge and be used for realizing keep the cycle (SPD) of gray level according to the time quantity of discharge.For example, when an image is passed through 256 gray level display, frame period (16.67ms) corresponding to 1/60 second is divided into eight sons (SF1-SF8), as shown in Figure 2, and each of these eight sons (SF1-SF8) be divided into reset cycle (RPD), addressing period (APD) and keep the cycle (SPD).

This reset cycle is identical with this addressing period in each son field.The address discharge of the unit that will discharge appears being used to selecting by the voltage difference between the transparency electrode of this addressing electrode and this scan electrode.This keep the cycle each the son in by 2 ⁿThe ratio of (n=0,1,2,3,4,5,6 and 7) increases.Therefore, be by controlling keeping the cycle of each son according to the gray level of an one image, that is, keep the time quantitaes of discharge by control, it is all different aspect each Zi Chang that this keeps the cycle.

Fig. 3 is the drive waveforms figure according to the plasma display panel device method that is used to drive correlation technique.

As shown in Figure 3, this plasma display device by according to as reset cycle that is used for each unit of initialization of dividing, cycle of keeping of discharge of being used to select the addressing period of the unit that will discharge and being used to keep the unit of selection drive (work).

Setting up the cycle of this reset cycle, the up-wards inclination waveform is side by side put on each scan electrode according to the faint dark discharge that takes place in each discharge cell of whole screen.Positive polarity wall electric charge is kept in the electrode at this addressing electrode and this to be accumulated, and negative polarity wall electric charge is discharged according to this foundation and accumulated in this scan electrode.

During the cycle of removing of this reset cycle, when its when the positive polarity voltage lower than the crest voltage of this up-wards inclination waveform begins to drop to the specific voltage level that is lower than ground (GND) level, the up-wards inclination waveform that provides is changed into the decline tilt waveform, cause faintly in each unit removing discharge, sufficiently to wipe the wall electric charge that in this scan electrode, exceedingly forms.Because this removes discharge, the wall electric charge that allows stable address discharge takes place can remain in each unit equably.

During this addressing period, the scanning reference waveform of scan reference voltage (Vsc) is put on this scan electrode (Y), and will (Vy) sequentially put on scan electrode (Y), and will put on this addressing electrode corresponding to the positive polarity data voltage of this scanning voltage simultaneously from the negative polarity scanning voltage that this scan reference voltage (Vsc) that scans reference waveform descends.When the difference between this scanning voltage and data voltage and the wall voltage that produces during this reset cycle is added, in applying this discharge cell of this data voltage address discharge takes place.When apply this keep voltage (Vs) keep pulse (SUS) time, wall electric charge (it enough allows to discharge) is by being formed in the unit of selection by this address discharge.During this removes cycle and this addressing period, to keep bias voltage (Vz) and offer this and keep electrode (Z), so that do not cause discharge with respect to the mistake of this scan electrode (Y) by being reduced in the voltage difference of keeping between electrode (Z) and the scan electrode (Y).

During this kept the cycle, this pulse (Sus) of keeping of keeping voltage (Vs) was alternately put on scan electrode and is kept electrode.In the unit of selecting by this address discharge, whenever each is kept this wall voltage that pulse (Sus) is used as in the unit and applies, and what this kept pulse (Sus) keeps voltage (Vs) when being added, at scan electrode (Y) with keep between the electrode (Z) and keep discharge, that is, show discharge.

After this keeps the discharge end, during an erase cycle, voltage of wiping inclination (Ramp-ers) waveform with relative small-pulse effect width and voltage level is provided for this and keeps electrode (Z), to wipe the wall electric charge within the unit that remains on whole screen.

Recently, be increased, in the process that drives this plasma display device, to highlight at this scan electrode (Y) and the distance kept between the electrode (Z).

At this scan electrode (Y) with keep expansion that increase aspect the distance between electrodes can cause the anodic site improving luminescence efficiency, but on the other hand, it causes the increase aspect driving voltage inevitably.Therefore, the discharge that bright spot is produced to lead to errors during this reset cycle may have very high possibility, and in addition, the quantity of power consumption is increased and makes the driving efficiency degradation.

To describe above-mentioned problem in detail with the hexagonal voltage curve (Vt-curve) (as shown in Figure 4) that is used to the voltage margin measurement by in this PDP, using discharge principle to occur now.

Fig. 4 illustrates according to the distribution in the distance between electrodes discharge start voltage.

As shown in Figure 4, it is poor that transverse axis is illustrated in the relative voltage of keeping between electrode (Z) and the scan electrode (Y), and the relative voltage that the longitudinal axis is illustrated between addressing electrode (X) and the scan electrode (Y) is poor.

The interior zone of the hexagonal voltage curve of shown in Figure 4 this is that this wall electric charge is dispensed on the zone in this discharge cell, and does not occur discharge in this zone.

At this scan electrode (Y) with to keep distance between the electrode (Z) be under the relatively short situation, the voltage Vf1 that represents in the surface-discharge zone of the third quadrant of this voltage curve is illustrated in scan electrode (Y) and keeps discharge start voltage (discharge and be activated) between the electrode (Z) thereon.At this scan electrode (Y) with to keep distance between the electrode (Z) be under the relatively long situation, voltage Vf2 is illustrated in scan electrode (Y) and keeps discharge start voltage between the voltage (Z).

Show as Fig. 4, this discharge start voltage and at scan electrode (Y) with keep the proportional increase of range difference between the electrode (Z), it can be by equation (1) expression that shows below:

[equation 1]

ΔV＝Vf2＝Vf1

As showing, according at scan electrode (Y) with keep poor (the Δ V) that distance between the electrode (Z) produces this discharge start voltage by equation (1) and Fig. 4.

The discharge that voltage takes place of setting up of setting up waveform that applies during the cycle of setting up of reset cycle by drive waveforms shown in Figure 3 will be described according to this correlation technique by use hexagonal voltage curve with reference to figure 5 now.

Fig. 5 illustrates when the voltage of setting up of setting up waveform according to correlation technique and is put on according to the distance between sparking electrode in this scan electrode (Y) in the process that changes aspect the cell voltage.

With reference to figure 5, point " A " expression just in time is applied in the wall voltage that this keeps electrode (Z) afterwards at the last voltage (Vs) of keeping of keeping pulse.

Herein, when the waveform according to the up-wards inclination of correlation technique driving method was offered this scan electrode (Y) during the cycle of setting up in the reset cycle, moved from this point " A " in direction as shown by arrows in the surface-discharge zone of discharge cell voltage by third quadrant.Here, when reaching the boundary value in surface-discharge zone of third quadrant when this discharge cell voltage, at scan electrode (Y) with keep between the electrode (Z) surface-discharge takes place.

In this case, if at scan electrode (Y) with to keep distance between the electrode (Z) be relatively shorter, then ' A ｀ ' goes up surface-discharge takes place at point.

Simultaneously, if be long, then go up surface-discharge takes place at point ' A " ' at scan electrode (Y) and the distance kept between the electrode (Z).

Herein, as shown in the figure, this point ' A " ' be a zone that has the high likelihood of this surface-discharge (surfacedischarge) and positive discharge (facing discharge) simultaneously.

Summary is with reference to the description more than the Figure 4 and 5, when at scan electrode (Y) with keep distance between the electrode (Z) and increased wittingly with when improving luminescence efficiency, during the cycle of setting up of this reset cycle, the possibility that positive discharge unintentionally takes place between scan electrode (Y) and addressing electrode (X) is relatively increased.During the cycle of setting up of this reset cycle, positive unintentionally discharge takes place between scan electrode (Y) and addressing electrode (X) make the luminance degradation of this PDP inevitably, and the discharge that leads to errors makes whole driving unstable.

Summary of the invention

Therefore, an object of the present invention is to solve at least the problem and the shortcoming of background technology.

Another object of the present invention provides a kind of plasma display panel device that can improve the driving pulse that puts on scan electrode and addressing electrode.

In order to realize above-described purpose, provide a kind of plasma display panel device according to the first embodiment of the present invention, it comprises plasma display panel (PDP), scanner driver and addressing driver.This PDP comprises scan electrode, keeps electrode and addressing electrode.This scanner driver applies one and sets up waveform to this scan electrode during the reset cycle, this is set up waveform and rises to first voltage with first slope, rises to second voltage with second slope then.When this was set up waveform and is applied in this scan electrode, this addressing driver imposed on this addressing electrode with first positive pulse.

In order to realize above-mentioned purpose, also provide a kind of plasma display panel device according to the second embodiment of the present invention, it comprises plasma display panel (PDP), scanner driver, keeps driver and addressing driver.This PDP comprises scan electrode, keeps electrode and addressing electrode.This scanner driver applies one and sets up waveform to this scan electrode during the reset cycle, this is set up waveform and rises to first voltage with first slope, rises to second voltage with second slope then.In the aft section of this reset cycle with during following the addressing period of (after it) this reset cycle, this is kept the offset waveform of keeping that driver will have the rate of rise and imposes on this and keep electrode.When this was set up waveform and is applied in this scan electrode, this addressing driver imposed on this addressing electrode with first positive pulse.

In order to realize above-described purpose, also provide a kind of plasma display panel device according to the 3rd embodiment of the present invention, it comprises plasma display panel (PDP), scanner driver, keeps driver and addressing driver.This PDP comprises scan electrode, keeps electrode and addressing electrode.This scanner driver imposes on this scan electrode first up-wards inclination waveform and decline tilt waveform, during the cycle of setting up, this first up-wards inclination waveform rises to first voltage with first slope, rise to second voltage with second slope then, during the cycle of removing, this decline tilt waveform drops to tertiary voltage, during addressing period, this second up-wards inclination waveform rises to the 4th voltage from tertiary voltage, applies scanning impulse then, and it drops to the 5th voltage from the 4th voltage.When this was set up waveform and is being applied in this scan electrode, this addressing driver imposed on this addressing electrode with first positive pulse.

In the present invention, when this PDP is driven (work), can prevent to exist the discharge of mistake, and this PDP can be by with high-speed driving.

Description of drawings

Describe the present invention in detail below with reference to following accompanying drawing, wherein identical reference number relates to identical unit.

Fig. 1 illustrates the structure of the plasma display panel (PDP) according to correlation technique.

Fig. 2 illustrates the method for gray level that is used to realize plasma display panel device according to correlation technique.

Fig. 3 is the figure according to the drive waveforms that is used to drive this plasma display device method of illustrating according to correlation technique.

Fig. 4 illustrates the discharge start voltage that distributes according in distance between electrodes.

Fig. 5 illustrates when the voltage of setting up of setting up waveform according to correlation technique and is put on according to the distance between sparking electrode in the scan electrode (Y) in the process that changes aspect the cell voltage.

Fig. 6 illustrates the structure according to the plasma display panel device of first embodiment of the invention.

Fig. 7 is one and is used to explain the figure that is used to drive this plasma display device method according to first embodiment of the invention.

Fig. 8 is that according to whether first positive pulse of being used to explain according to a first embodiment of the invention is applied in the figure of the flash-over characteristic that the addressing electrode of this plasma display device obtains.

Fig. 9 be according to first embodiment of the invention be used for explain when this plasma display device is driven, during the cycle of keeping, put on the figure of second positive pulse of this addressing electrode.

Figure 10 illustrates to be used for explaining when this plasma display device is driven the figure of the voltage curve of change procedure (Vt-curve) aspect the voltage in discharge cell during the cycle of setting up according to first embodiment of the invention.

Figure 11 a and 11b are the figure when this plasma display device drive waveforms on a plurality of sons part driven time that illustrates according to first embodiment of the invention.

Figure 12 is the figure that puts on the voltage swing of setting up waveform of scan electrode when this plasma display device is driven in a plurality of sons field that illustrates according to first embodiment of the invention.

Figure 13 a and 13b are the figure that is used to drive the plasma display panel device method that is used to explain according to second embodiment of the invention.

Figure 14 be illustrate according to second embodiment of the invention when this plasma display device driven the time, during the aft section of reset cycle, put on the figure of the waveform of keeping electrode (Z).

Figure 15 a and 15b are the figure that is used to drive the plasma display panel device method that is used to explain according to third embodiment of the invention.

Figure 16 be illustrate according to third embodiment of the invention when plasma display panel device driven the time, during the aft section of reset cycle, put on the figure of the waveform of scan electrode (Y).

Figure 17 and 18 is the figure that are used for explaining according to scan reference voltage with respect to correlation technique and drive waveforms of the present invention noise.

Figure 19 is the figure that is used for explaining according to the present invention the scan electrode group of plasma display panel (PDP).

Figure 20 a and 20b are the figure that is used to explain for apply the driving method of the second up-wards inclination waveform time according to this scan electrode group control according to of the present invention.

Figure 21 a and 21b are the figure that is used to explain for differently control the driving method that applied for the second up-wards inclination waveform time according to this scan electrode group according to of the present invention.

Embodiment

In more detailed mode the preferred embodiments of the present invention are described below with reference to the accompanying drawings.

Plasma display panel device according to first embodiment of the invention comprises: a plasma display panel (PDP), it comprises scan electrode, keeps electrode and addressing electrode, a scanner driver, be used for during the reset cycle, applying one and set up waveform to this scan electrode, this is set up waveform and rises to first voltage with first slope, rise to second voltage with second slope then, with an addressing driver, when this was set up waveform and is being applied in this scan electrode, this addressing driver was used for first positive pulse is imposed on this addressing electrode.

The crest voltage of this first positive pulse is between 1 to 1.5 times of the voltage of the data pulse that puts on this addressing electrode during the addressing period.

This first positive pulse is by to apply with this mode of setting up synchronous waveform.

This first positive pulse is put on this addressing electrode on a plurality of sons one or more.

This first positive pulse has maximum pulse width on the son field that has minimum gray level weighted value among a plurality of sons field.

This first positive pulse by at least one of first to the 3rd son to apply from a son beginning order in succession with minimum gray level weighted value.

First slope is greater than second slope.

The size of this first voltage is identical with the voltage that puts on the scan reference voltage of this scan electrode during the addressing period of following (after it) reset cycle.

Varying in size of second voltage that puts on this scan electrode on of a plurality of sons field in the size that on other remaining son fields, puts on second voltage of this scan electrode.

The offset waveform of keeping with voltage swing between 80V and 120V is applied in this and keeps electrode during addressing period.

Put on this scan electrode respectively and keep first of electrode and keep pulse and do not overlap each other, and put on this scan electrode respectively and this last pulse of keeping of keeping electrode does not overlap each other.

First keep pulse and be applied in this scan electrode or this when keeping electrode when this, second positive pulse is applied in this addressing electrode.

The voltage of second positive pulse and first positive pulse or the voltage that puts on the data pulse of this addressing electrode are identical.

At scan electrode with keep distance between electrodes and be not less than 90 μ m, but be not more than 200 μ m.

Plasma display panel device according to second embodiment of the invention comprises: a PDP, it comprises scan electrode, keep electrode and addressing electrode, a scanner driver, be used for during the reset cycle, applying one and set up waveform to this scan electrode, this is set up waveform and rises to first voltage with first slope, rise to second voltage with second slope then, keep driver, be used in the aft section of this reset cycle and during following the addressing period of this reset cycle, the offset waveform of keeping that will have the rate of rise imposes on this and keeps electrode, with the addressing driver, when this was set up waveform and is being applied in this scan electrode, this addressing driver was used for first positive pulse is imposed on this addressing electrode.

This rate of rise is since a voltage higher than ground level.

Plasma display panel device according to third embodiment of the invention comprises: a PDP, it comprises scan electrode, keep electrode and addressing electrode, scanner driver, be used to impose on this scan electrode first up-wards inclination waveform and decline tilt waveform, this first up-wards inclination waveform rises to first voltage with first slope during the cycle of setting up, rise to second voltage with second slope then, this decline tilt waveform drops to tertiary voltage during the cycle of removing, and this scanner driver is used to apply the second up-wards inclination waveform, this second up-wards inclination waveform rises to the 4th voltage from tertiary voltage during addressing period, apply scanning impulse then, it drops to the 5th voltage from the 4th voltage, with the addressing driver, when this was set up waveform and is being applied in this scan electrode, this addressing driver was used for first positive pulse is imposed on this addressing electrode.

The slope of the second up-wards inclination waveform is less than the slope of keeping pulse that applies during the cycle of keeping.

The second up-wards inclination waveform is being maintained during the some cycles on the 4th voltage.

Apply this up-wards inclination waveform till before first of the scanning impulse that puts on this scan electrode is applied in.

Describe in detail according to plasma display panel device of the present invention referring now to the accompanying drawing of following.

＜first embodiment 〉

As shown in Figure 6, this plasma display device according to first embodiment of the invention comprises PDP 600, addressing driver 601, scanner driver 602, keeps driver 603 and driving pulse controller 604.

Adding among this PDP 600 of front panel (not shown) and the formation of rear panel (not shown) in certain space betwixt by utilization, a plurality of electrodes, for example scan electrode (Y1 to Yn) and keep electrode and be used as pairing and form, and addressing electrode (X1 to Xm) is formed with scan electrode (Y1 to Yn) with keep electrode (Z) and intersect.

Carry out inverse gamma correction and shadow tone treatment for correcting by inverse gamma correction circuit (not shown) and error diffusion circuit (not shown), the data of being shone upon to each son field by a son circuit that shines upon are provided for this addressing driver 601 then.At reset cycle, addressing period with during keeping cycle one or more, this addressing driver 601 imposes on this addressing electrode (X1 to Xm) with certain driving voltage.Particularly, this addressing driver 601 imposes on this addressing electrode with first positive pulse, this is set up waveform and is applied in this scan electrode during the reset cycle simultaneously, and under the control of this driving pulse controller 604, the data that will provide during this addressing period impose on this addressing electrode (X1 to Xm).

Under the control of this driving pulse controller 604, at reset cycle, addressing period with during keeping cycle one or more, this scanner driver 602 imposes on this scan electrode (Y1 to Yn) with certain driving voltage.Particularly, during the cycle of setting up of reset cycle, this scanner driver 602 imposes on the waveform of setting up that one of this scan electrode (Y1 to Yn) has two slopes, and during the cycle of removing of reset cycle, applies one and remove waveform.This is set up waveform and refers to the waveform that its magnitude of voltage little by little increases, and this is removed waveform and refers to the waveform that its magnitude of voltage little by little reduces.In addition, during this addressing period, this scanner driver 602 sequentially imposes on this scan electrode (Y1 to Yn) with the scanning impulse of negative polarity scanning voltage, and during this keeps the cycle, will keep pulse and impose on this scan electrode (Y1 to Yn).

Under the control of this driving pulse controller 604, at reset cycle, addressing period with during keeping cycle one or more, this is kept driver 603 and certain driving voltage is imposed on this keeps electrode (Z).Particularly, this is kept driver 603 and keeps offset waveform with one offer this and keep electrode (Z) during this addressing period, and by alternately working by means of this scanner driver 602 this is kept pulse offer this and keep electrode (Z) during this keeps the cycle.

This driving pulse controller 604 produces at reset cycle, addressing period with during keeping the cycle and is used to control this addressing driver 601, scanner driver 602 and keeps the operation timing of driver 603 and some synchronous control signal (CTRX, CTRY and CTRZ), and respectively this control signal is offered this addressing driver 601, scanner driver 602 and keep driver 603 to control them.

Fig. 7 is one and is used to explain the diagrammatic sketch that is used to drive this plasma display device method according to first embodiment of the invention.

As illustrational, the method that is used to drive this plasma display device according to first embodiment of the invention, little by little rise to first voltage (Vsc) with first slope, this that rises to second voltage (Vsc+Vs) with second slope set up waveform and be applied in this scan electrode during the cycle of setting up of reset cycle then, and first positive pulse is applied in this addressing electrode (X), and this is set up waveform and is applied in this scan electrode (Y) simultaneously.In this case, this first positive pulse may be one and has the tilt waveform of slope or can be a square wave.In addition, this first positive pulse is applied in thereon time point can to set up the time point that waveform is applied in thereon with this is different or identical.

This absolute value of setting up first slope of waveform can be less than the absolute value of second slope, and preferably, it is greater than second slope.To this reason is that it is high more that this first slope is increased because the initial period when setting up waveform when this and being applied in is not easy to discharge, and the timing surplus that can obtain this reset cycle is just many more.

This first voltage of setting up waveform has during following this addressing period of this reset cycle the identical substantially size of scan reference voltage (Vsc) with the scan reference voltage that puts on scan electrode (Y), and preferably, this size is between 100V and 150V.For example, at the voltage of this scan reference voltage that puts on this scan electrode (Y) during the addressing period be-situation of Vsc under, the size of this first voltage is | the Vsc of-Vsc|.

The voltage (Vsc) that this size of setting up second voltage of waveform is this scan reference voltage substantially and during this keeps the cycle, apply this keep the summation of voltage (Vs), it is preferably between 230V and 350V.

This that applies during the reset cycle in the time of driven with the plasma display panel device of correlation technique as shown in Figure 3 set up waveform and compared, and this each size of setting up first and second voltages of waveform is relatively little.This is that the wall electric charge can be accumulated fully during it because be provided with a pre-reset cycle in addition before this reset cycle.

This in advance the reset cycle can be included in each of a plurality of son, and preferably, it betides before reset cycle of this first son, so that obtain regularly surplus.For example, comprise at a frame under the supposition of size order in succession with the gray level weighted value 12 sons from first to dozenth total, this pre-reset cycle was included in before the reset cycle of the first son field, that is, this child field has the minimum gray level weighted value among 12 son fields.

The negative polarity waveform that comprises the decline tilt waveform that its voltage little by little reduces is applied in this scan electrode (Y) during the reset cycle in advance, and the positive polarity waveform is applied in this and keeps electrode (Z).In this case, this negative polarity waveform has substantially and the voltage of the scanning impulse (SP) that puts on this scan electrode (Y) during this addressing period (Vy) identical voltage.That is to say, during this pre-reset cycle, can produce this negative polarity waveform, and during this addressing period by using identical voltage source can produce this scanning impulse.

This positive polarity waveform have substantially with keep voltage at this during apply this keep the identical voltage of voltage (Vs) of pulse.Similarly, during this pre-reset cycle, can produce the positive polarity waveform, and during this keeps the cycle, keep pulse by using identical voltage source to produce.

During this pre-reset cycle, positive polarity wall electric charge is accumulated in this scan electrode (Y) according to the negative polarity waveform that puts on this scan electrode (Y), and simultaneously negative polarity wall electric charge is accumulated in the discharge cell this and keeps in the electrode (Z) according to putting on this negative polarity waveform of keeping electrode (Z).

This wall electric charge that in this discharge cell, forms during this pre-reset cycle in addition have minimum gray level weighted value first the son reset cycle during kept, therefore, though this voltage of setting up waveform that applies during the reset cycle of the first son field is set to be scan reference voltage (Vsc) and keeps the summation of voltage (Vs), still can carry out reset (resetting).

Applying first positive pulse, to give the reason of this addressing electrode (X) be to prevent to take place during the reset cycle unsettled discharge, and in this case, preferably, the crest voltage of this first positive pulse (Vxb1) is between 1 to 1.5 times of the data voltage (Vd) that puts on this addressing electrode (X) during this addressing period.Describe these in detail referring now to Fig. 8.

Fig. 8 is that according to whether this first positive pulse of being used to explain according to a first embodiment of the invention is applied in the figure of the flash-over characteristic that the addressing electrode of this plasma display device obtains.

Fig. 8 (a) illustrates when this first positive pulse does not put on this addressing electrode (X) with long interstitial structure, in the built-in intensity that stands up electricity of this discharge cell, wherein at scan electrode (Y) with keep distance between the electrode (Z) and be longer than distance between scan electrode (Y) and addressing electrode (X), and Fig. 8 (b) illustrates when this first positive pulse puts on addressing electrode (X) with identical structure, in the built-in intensity that stands up electricity of this discharge cell.

At first, with reference to figure 8 (a), because at scan electrode (Y) with to keep distance between the electrode (Z) be relatively long, and the distance between scan electrode (Y) and addressing electrode (X) is relatively short, when being applied in this scan electrode (Y) during this sets up the cycle of setting up of waveform in the reset cycle, the front discharge that takes place between scan electrode (Y) and addressing electrode (X) is than at scan electrode (Y) with to keep the surface-discharge of generation between the electrode (Z) stronger.Thereby, the problem that this reset discharge becomes unstable and produces bright spot appears.

Simultaneously, with reference to figure 8 (b), when first positive pulse is applied in this addressing electrode (X), when this is set up waveform and is applied in this scan electrode (Y) simultaneously, though at scan electrode (Y) with to keep distance between the electrode (Z) be relatively long, and the distance between scan electrode (Y) and addressing electrode (X) is relatively short, when during this sets up the set up cycle of waveform in the reset cycle, being applied in scan electrode (Y), voltage difference between scan electrode (Y) and addressing electrode (X) can be lowered, thereby can strengthen at scan electrode (Y) and the surface-discharge kept between (Z), and the discharge of the front between scan electrode (Y) and addressing electrode (X) can relatively be weakened, thereby make this reset discharge stable, and suppress the generation of bright spot.

During after this reset cycle this removed the cycle, this is removed waveform and is applied in this scan electrode, and but having the offset waveform of keeping that is not less than 80V is not more than 120V voltage is applied in this and keeps electrode, and during this addressing period, the scanning impulse (SP) that descends from this scan reference voltage (Vsc) is applied in this scan electrode (Y), and during this removes the cycle, applied this keep offset waveform and put on this continuously and keep electrode (Z), thereby during this addressing period, be suppressed at scan electrode (Y) and keep the generation of the surface-discharge between the electrode (Z).

In this case, though this scan reference voltage (Vsc) has negative level, can (it (Vsc) drops to this voltage (Vy)) and put on and obtain enough voltage differences between the data pulse of this addressing electrode (X), thereby can reduce the electronics burden (electrical burden) of this driving circuit from this scan reference voltage at scanning impulse (SP).

During this keeps the cycle, a plurality ofly keep pulse (Sus) and alternately put on this scan electrode (Y) and keep electrode (Z).Keep pulse for this that during the cycle of keeping, applies, at first put on this scan electrode and this pulse of keeping of keeping electrode respectively and do not overlap each other, and the pulse of keeping that finally puts on this scan electrode respectively and keep electrode does not overlap each other yet.To this reason be restricted keep the cycle during, give scan electrode (Y) and keep electrode (Y) to this and improve this luminescence efficiency and make this keep discharge stability by applying bigger number of sustain pulses.

During keeping the cycle, apply first when keeping pulse, because the interference of this addressing electrode (X), may become instability at scan electrode (Y) and the surface-discharge kept between the electrode (Z) at this.Therefore, for fear of above-mentioned problem,, certain voltage is put on this addressing electrode (X), thereby make this keep discharge stability when first when keeping pulse and be applied in scan electrode (Y) and keep of electrode (Z).

Fig. 9 be according to first embodiment of the invention be used for explain when this plasma display device is driven, during the cycle of keeping, put on the diagrammatic sketch of second positive pulse of this addressing electrode (X).

With reference to figure 9, (a) illustrate according to the present invention and keep pulse is applied in scan electrode (Y) and keeps electrode (Z) during the cycle of keeping one when first, when second positive pulse of positive polarity voltage (Vxb2) is applied in this addressing electrode (X), according to the drive waveforms that is used to drive this plasma display device method, and (b) illustrate according to of the present invention during this keeps the cycle, keep the pulse except first among according to the drive waveforms that is used to drive this plasma display device method, at other remaining states of keeping this addressing electrode in the pulse.

With reference to figure 9 (a), keeping pulse first is applied in scan electrode (Y) and keeps in one the state of electrode (Z), when second positive pulse is applied in this addressing electrode (X), first keep this electrode (it can be scan electrode (Y) or keep electrode (Z)) that pulse puts on it and the voltage difference between this addressing electrode (X) is lowered at this, make and to be reinforced at scan electrode (Y) and the surface-discharge kept between the electrode (Z), front between scan electrode (Y) and addressing electrode (X) discharge simultaneously can be weakened, thereby make this keep discharge stability.

With reference to figure 9 (b), when this keeps that discharge is kept pulse by first and when stablizing, depend in discharge cell by what first distribution of keeping the wall electric charge of pulse shaping was followed and keep discharge, therefore, when this is kept pulse and is after this provided, even without second positive pulse (therefore, second positive pulse is omitted), also can this take place with stable manner and keep discharge.

During the cycle of setting up of reset cycle as mentioned above, the voltage of second positive pulse (Vxb2) can be identical with the voltage (Vxb1) of first positive pulse, can be identical with the voltage (Vd) of this data pulse of the addressing electrode that puts on this addressing period (X) perhaps.

As mentioned above, can more effectively be applicable to long interstitial structure according to this plasma display device of the present invention and driving method thereof, wherein longer than the distance between scan electrode (Y) and addressing electrode (X) at scan electrode (Y) and the distance kept between the electrode (Z).To this reason is because exist because the voltage disturbance of addressing electrode (X), become unsettled high possibility at scan electrode (Y) and the surface-discharge kept between the electrode (Z), thereby under this condition, the present invention is in full force and effect.

The gap of this length is defined in scan electrode (Y) and keeps distance between the electrode (Z), and it preferably is not less than 90 μ m (micron) but is not more than 200 μ m (micron).

This scan electrode (Y) and keep electrode (Z) and can comprise transparent electrode and bus electrode respectively perhaps can be only to be formed by this transparency electrode.In this case, at scan electrode (Y) with keep distance between the electrode (Z) and refer in the transparency electrode of scan electrode (Y) and keep distance between the electrode (Z), and at the bus electrode of scan electrode (Y) with keep the short of distance between the electrode (Z).

With reference to Figure 10, some A1 represents just in time to keep pulse and be applied in this and keep electrode (Z) afterwards, the state of the wall voltage in discharge cell last.

After this, during this sets up the cycle, (it rises to first voltage (Vsc) from ground level (GND) beginning with first slope to set up waveform, rise to second voltage (Vcs+Vs) with second slope then) be applied in this scan electrode (Y), simultaneously, when first positive pulse of this positive voltage (Vxb1) was applied in this addressing electrode (X), this voltage was moved to the some A2 in this discharge cell.That is to say that when the voltage of first positive pulse that puts on this addressing electrode (X) was increased to this wall voltage, this voltage was moved to an A2 on an A1.

(it rises to first voltage (Vsc) from ground level (GND) beginning with first slope when this sets up waveform, and rise to second voltage (Vsc+Vs) with second slope then) be applied in this when scanning electrode (Y), cell voltage is moved by the direction along solid arrow.

Summation at the voltage of setting up waveform (Vsc+Vs) of working as the wall voltage (Vw) on an A2 and applying from the outside surpasses discharge start voltage (Vw+V ₂') time the moment, on an A22, stably occur in scan electrode (Y) and keep the foundation discharge of surface-discharge type between the electrode (Z).

If this addressing electrode (X) is maintained on the ground level (GND) during this sets up the cycle, to set up waveform when this and be applied in this when scanning electrode (Y), this voltage in this discharge cell is moved by the direction along dotted arrow.

Summation at the voltage of setting up waveform (Vsc+Vs) of working as this wall voltage (Vw) and applying from the outside surpasses this discharge start voltage (Vw+V ₂) time the moment, on an A11, stably occur in scan electrode (Y) and keep surface-discharge between the electrode (Z).

In this respect, because this A11 is close to this front region of discharge, the positive at that point discharge of existence by mistake occurs in the high possibility between scan electrode (Y) and the addressing electrode (X).Consider usually and should the front discharge have the characteristic that has luminous in a large number strong discharge, the effect of the positive reverse side critical factor that discharged takes place unintentionally, make the luminance degradation of this plasma display device.

Therefore, in plasma display panel device and driving method thereof according to first embodiment of the invention, as mentioned above, set up before waveform is applied at this, perhaps on time point when this is set up waveform and is applied in, by first positive pulse (that is, this positive voltage (Vx)) is imposed on this addressing electrode (X), can prevent from undesired positive discharge took place between scan electrode (Y) and addressing electrode (X) during the cycle of setting up.

That is to say,, can prevent between scan electrode (Y) and addressing electrode (Z), to take place positive unintentionally discharge by from A11 to A22, moving at scan electrode (Y) and keeping this point that surface-discharge takes place between the electrode (Z).In addition, as shown in figure 10,, put on this scan electrode (Y) and can be lowered with this size of setting up voltage that produces this foundation discharge by from A11 to A22, moving at scan electrode (Y) and keeping this point that surface-discharge takes place between the electrode (Z).

This can be by equation (2) expression that shows below.

[equation 2]

ΔV ₂＝V ₂-V ₂’

This voltage V ₂Be that this of this scan electrode (Y) needs that is used for this foundation discharge on this A11 set up the minimum voltage value of waveform, and V ₂' be that this that be used for this foundation discharge needs for this scan electrode (Y) on this A22 set up the minimum voltage value of waveform.

With reference to equation (2) and Figure 10, according to driving method of the present invention, before this is set up that waveform is applied in or sets up synchronous waveform with this, by first positive pulse being imposed on this addressing electrode (X), move at scan electrode (Y) from A11 to A22 and keep between the electrode (Z) this point that surface-discharge takes place, scan electrode (Y) produces this minimum voltage value of setting up waveform of setting up discharge and needing can reduce a voltage Δ V ₂

At first, with reference to figure 11a, during the cycle of setting up of reset cycle, on each son field of a frame, little by little rise to first voltage with first slope, also little by little set up waveform to this of second voltage with second slope then and put on this scan electrode (Y), and this first positive pulse is applied in this addressing electrode (X), this is set up waveform and puts on this scan electrode (Y) simultaneously.

During the cycle of setting up of reset cycle of first son (it has minimum gray level weighted value among a plurality of son), when this was set up waveform and is applied in this scan electrode (Y), this first positive pulse that puts on this addressing electrode (X) had than put on the bigger pulse width of this addressing electrode (X) on different son.

To this reason is further to make on first son at scan electrode (Y) and the surface-discharge kept between the electrode (Z) to stablize, because at the number that this that applies during the cycle of keeping kept pulse is to have on first son of minimum gray level weighted value minimumly, it has the possibility of high non stationary discharge.

With reference to figure 11b, with different under the situation of Figure 11 a, this first positive pulse is applied in the son field of some quantity that chooses in a plurality of sons field from be included in this frame.That is, this first positive pulse is applied on the sub-field of certain low gray level that has relatively low gray-scale value among a plurality of sons field of this frame.

Herein, this low gray level is to start from having the son from first to second of minimum gray level weighted value or to the son of the 3rd son with continuous order.For example, comprise under the situation of big or small continuous order with the gray level weighted value 12 sons having first son of minimum gray level weighted value, the 3rd son field that has second son of the second minimum gray level weighted value and have the 3rd a minimum gray level weighted value and be set to low gray level from first to dozenth total at a frame.In addition, in this case, during the cycle of setting up of first sub with minimum gray level weighted value reset cycle, when this was set up waveform and puts on this scan electrode (Y), this first positive pulse that puts on this addressing electrode (X) had than put on the bigger width of this addressing electrode on different son.

The reason that only applies first positive pulse on the low gray level field among a plurality of sons field of this frame is, because except low gray level field, by this wall electric charge in the discharge cell that forms in the son field before the priority of use, can on other remaining son fields, carry out stable fully resetting, thereby this first positive pulse can be omitted on other remaining son fields.

As shown in figure 12, during the reset cycle of a son field among a plurality of sons field of this frame of formation, this that puts on scan electrode (Y) set up each voltage swing of waveform, can be set up and be different from during the reset cycle of different sons, put on the voltage swing of this foundation of this scan electrode.Promptly, among a plurality of sons field of this frame, when this voltage swing of setting up waveform is V1 on the first son field when, this voltage swing of setting up waveform is V2 on the second son field, this voltage swing of setting up waveform is V3 on the 3rd son field, and this voltage swing of setting up waveform is V4 on the 4th son, and it is different that the size of each voltage can be set to be.

In this case, among a plurality of sons field, this voltage swing of setting up waveform on the son with low relatively gray level weighted value has than this of the different son of higher gray level weighted value greater than other sets up the voltage swing of waveform, because exist on the son field with low relatively gray level weighted value, this discharge can be unsettled than higher possibility.

In first embodiment of the present invention, this is kept offset waveform and begins to be applied in this from cycle of removing in cycle of setting up of following this reset cycle and keep electrode (Z), but aspect, for stable discharge and addressing rapidly, this is kept offset waveform and can discomfort apply during the cycle of removing, and will describe in second embodiment of the present invention now.

＜the second embodiment 〉

The method for driving this plasma display device according to second embodiment of the invention will be omitted with the description of identical repetition in first embodiment of the present invention.

As shown in the figure, in plasma display panel device according to second embodiment of the invention, during the cycle of setting up of reset cycle, on the one or more sons field among a plurality of sons field of a frame, little by little rise to the waveform of setting up that first voltage little by little rises to second voltage with second slope then and be applied in this scan electrode (Y) with first slope, first positive pulse is applied in this addressing electrode (X), this is set up waveform and is applied in this scan electrode (Y) simultaneously, and during the aft section of reset cycle, promptly, before this addressing period begins, the offset waveform (Vzb) of keeping with rate of rise is applied in this and keeps electrode, and this waveform is kept subsequently before this addressing period.At this moment, this rate of rise is to begin from the voltage higher than this ground level.

At first, with reference to figure 13a, first positive pulse is applied on each of a plurality of son of this frame, and similarly as according to first embodiment of the invention for the method that drives this plasma display device, during the cycle of setting up of first sub with minimum gray level weighted value reset cycle, when this was set up waveform and is applied in this scan electrode (Y), first positive pulse that puts on this addressing electrode (X) had than the bigger width of first positive pulse that puts on this addressing electrode on other remaining sons.

Next, different with reference to figure 13b with the situation of Figure 13 a, apply in the son field of the some that this first positive pulse only chooses in a plurality of sons field from comprise this frame.That is, this first positive pulse is applied in this addressing electrode on the sub-field of certain low gray level that has relatively low gray-scale value among a plurality of sons field of this frame.In this case, this low gray level field is sub from first to the 3rd sub the sub-field that starts from having minimum gray level weighted value with continuous order.

Put on the detailed drive waveforms that this keeps electrode (Z) be described in the aft section of this reset cycle referring now to Figure 14 during.

Figure 14 be illustrate according to second embodiment of the invention when this plasma display device driven the time, during the aft section of reset cycle, put on the figure that this keeps the waveform of electrode (Z).

Figure 14 is the enlarged drawing of Figure 13 a " A " part.Before this addressing period began, this with this rate of rise kept offset waveform (Vzb) and is applied in this and keeps electrode, kept during this addressing period then.In other words, this is kept electrode and maintain this ground level during the major part of reset cycle, and correspondent voltage is improved from ground level precipitously, then before this addressing period, during the aft section of reset cycle, little by little increase with certain slope, this voltage is maintained on certain bias voltage (Vzb) then.

When during this keeps the major part of electrode (Z) in the reset cycle, maintaining this ground level (GND) voltage, this that takes place in the aft section of reset cycle removed discharge and can be stabilized, and the address discharge that takes place during this addressing period also can be stabilized, so that real-time addressing.

In first and second embodiment of the present invention as mentioned above, during following the addressing period of reset cycle, this scan reference voltage that rises is applied in this scan electrode (Y) precipitously, and in this respect, its voltage of scan reference voltage is little by little increased, that is, the up-wards inclination waveform with a slope also can be applied in this scan electrode (Y), is used for this stable discharge.To in the 3rd embodiment of the present invention, describe these in detail now.

＜the three embodiment 〉

Being used for driving the method for this plasma display device according to third embodiment of the invention will be omitted with description in first and second identical repetitions of embodiment of the present invention.

As shown, in plasma display panel device according to third embodiment of the invention, little by little rise to first voltage with first slope, little by little rise to the first up-wards inclination waveform (the first up-wards inclination waveform) of second voltage during the cycle of setting up of reset cycle with second slope then, on the one or more sons field among a plurality of sons field of a frame, be applied in this scan electrode (Y), and this first positive pulse is applied in this addressing electrode (X), and this first up-wards inclination waveform is applied in this scan electrode (Y) simultaneously.

The decline tilt waveform (the second decline tilt waveform) that drops to tertiary voltage is applied in this scan electrode (Y) during following the cycle of removing in the cycle of foundation, be applied in this scan electrode (Y) with certain slope from the second up-wards inclination waveform (the second up-wards inclination waveform) that tertiary voltage rises to the 4th voltage, then, apply the scanning impulse that drops to the 5th voltage from the 4th voltage.

As shown, in the aft section of reset cycle with during following the addressing period of reset cycle, have keeping offset waveform and can being applied in this and keeping electrode of the rate of rise, and do not have keeping offset waveform and can being applied in this and keeping electrode of the rate of rise little by little.

At first, with reference to figure 15a, this first positive pulse is applied on each son field of this frame, and similarly as in second embodiment of the invention, during the cycle of setting up of first sub with minimum gray level weighted value reset cycle, when this was set up waveform and is applied in this scan electrode (Y), first positive pulse that puts on this addressing electrode (X) had than the bigger pulse width of first positive pulse that puts on this addressing electrode on other remaining sons.

Next, different with the situation of Figure 15 a with reference to figure 15b, this first positive pulse is only applied in the son field of some quantity that chooses in a plurality of sons field from comprise this frame.That is, this first positive pulse is put on this addressing electrode on the sub-field of certain low gray level that has relatively low gray-scale value among a plurality of sons field of this frame.In this case, this low gray level field is sub from first to the 3rd sub the sub-field that starts from having minimum gray level weighted value with continuous order.

Be described in the detailed drive waveforms that puts on this scan electrode (Y) on the point that this addressing period begins referring now to Figure 16.

Figure 16 be illustrate according to third embodiment of the invention when this plasma display device driven the time, during the aft section of reset cycle, put on the figure of the waveform of this scan electrode (Y).

Figure 16 is the amplification diagrammatic sketch of Figure 15 a " B " part.During the cycle of removing of this reset cycle, the decline tilt waveform that drops to this tertiary voltage is applied in this scan electrode (Y), and applies the first up-wards inclination waveform that rises to the 4th voltage with certain certain slope from tertiary voltage.

When this scan reference voltage that rises when the point that little by little begins from addressing period is applied in this scan electrode (Y), can be reduced in the noise that produces in this drive waveforms.

Figure 17 illustrates the noise states according to the scan reference voltage of this drive waveforms according to correlation technique, and Figure 18 illustrates according to noise states of the present invention.

With reference to Figure 17, shown in (a), be applied in the time point of this scan electrode (Y) and be identical (ts) on each scan electrode, and this voltage is increased precipitously and applied at this scanning reference waveform during the addressing period.Therefore, shown in Figure 17 (b), noise is produced from this drive waveforms that puts on this scan electrode.Because the capacitive coupling by panel produces noise, and on the time point that the voltage of this scan reference voltage is increased precipitously, the noise of rising is produced from the drive waveforms that puts on this scan electrode (Y).This noise electrically damages the driver part of this plasma display board, for example, is used to apply the scanner driver IC (integrated circuit) that scanning impulse is given this scan electrode (Y).

With reference to Figure 18, shown in (a), this scan reference voltage that puts on this scan electrode (Y) during this addressing period comprises the second up-wards inclination waveform, and its slope is little by little increased and reaches this scan reference voltage (Vsc).

The slope of this second up-wards inclination waveform is less than the slope of keeping pulse that applies during keeping the cycle at this.At length, the second up-wards inclination waveform has the littler slope of time that makes progress than this ER that keeps pulse.This second up-wards inclination waveform is maintained on the 4th voltage, that is, and and on this scan reference voltage (Vsc).

Apply this second up-wards inclination waveform till before first of the scanning impulse that puts on this scan electrode (Y) is applied in.The time that is used to apply the second up-wards inclination waveform is greater than 0 μ s (microsecond), but is not more than within the scope of 20 μ s, and preferably, greater than 6 μ s but be not more than in the scope of 10 μ s.

Therefore, the size of this noise that is produced by this scan reference voltage that puts on scan electrode during addressing period is lowered.

Simultaneously, in above-mentioned driving method, be used to improve this scanning reference waveform (promptly, put on the second up-wards inclination waveform of each scan electrode (Y)) the time Be Controlled of voltage be same greater than 0 μ s, but be not more than in the scope of 20 μ s, and preferably, greater than 6 μ s, but be not more than in the scope of 10 μ s, and in this case, this scan electrode (Y) can differently be divided into a plurality of scan electrode group, and be used to apply time of the second up-wards inclination waveform can be according to each scan electrode group difference.

Simultaneously, in of the present invention second and the 3rd embodiment, the magnitude of voltage of keeping offset waveform at this that applies before this preliminary sweep pulse is improved in a part precipitously, and this magnitude of voltage is little by little improved in another part.But in this respect, only wherein a part being improved of this magnitude of voltage can be formed precipitously, perhaps only wherein a part little by little being improved of this magnitude of voltage can be formed.In addition, it has described this, and to keep the time point that offset waveform is applied in be different with the time point that this scan reference voltage is applied in, but this time point of being applied in of this two waveforms can be identical substantially thereon.

Figure 19 is the figure that is used for explaining according to the present invention the scan electrode group of this plasma display board (PDP).

With reference to Figure 19, the scan electrode of this PDP 2600 (Y) for example is divided into, Ya electrode group (Ya ₁～Ya (n)/4), Yb electrode group (Yb ((n/4)+1)～Yb (2n)/4), Yc electrode group (Yc ((2n/4)+1)～Yc (3n)/4) and Yd electrode group (Y ((3n/4)+1)～Yd (n)).

It is identical that the number that is included in the scan electrode in each scan electrode group (Ya～Yd electrode group) is set up, but also is possible concerning the number that is included in the scan electrode in each scan electrode group (Ya～Yd electrode group) differently is set.For example, this Ya electrode group can comprise 100 scan electrodes, and this Yb electrode group can comprise 200 scan electrodes simultaneously.

Can also control the number of this scan electrode group.In addition, number in scan electrode group is minimum 2, but (that is, when the sum of scan electrode is " n " under the supposition within) the scope, it can be set in the scope of 2≤N≤(n-1) (N is the number of scan electrode group) less than maximum scan electrode sum.

By this way, within the cycle till before first scanning impulse is applied in this scan electrode, can control and be used to apply the time that the second up-wards inclination waveform is given this scan electrode group.

When being used to apply the time of the second up-wards inclination waveform, it preferably imposes on each scan electrode (Y) that is included in each scan electrode group with this up-wards inclination waveform with the identical application time.For example, from this scan electrode Ya ₁Apply the second up-wards inclination waveform and can be set to 5 μ s for the application time of this scan electrode Ya (n)/4, can be set to 10 μ s for the application time of this scan electrode Yb (2n)/4 and apply the second up-wards inclination waveform from this scan electrode Yb ((n/4)+1).By this way, the application time that puts on the second up-wards inclination waveform that belongs to a scan electrode in the scan electrode group is set to be identical.

In addition, can be set to be identical in each difference that has between application time of two second up-wards inclination waveforms of different application time.For example, with reference to Figure 19, from this scan electrode Ya ₁The application time that imposes on the second up-wards inclination waveform of this scan electrode Ya (n)/4 can be set to 5 μ s, the application time that imposes on the second up-wards inclination waveform of this scan electrode Yb (2n)/4 from this scan electrode Yb ((n/4)+1) can be set to 10 μ s, can be set to 15 μ s and can be set to 20 μ s from the application time that this scan electrode Yd ((3n/4)+1) imposes on the second up-wards inclination waveform of this scan electrode Yd (n) from the application time that this scan electrode Yc ((2n/4)+1) imposes on the second up-wards inclination waveform of this scan electrode Yc (3n)/4.

In other words, in application time of the second up-wards inclination waveform that puts on this Ya scan electrode group and the difference that puts between application time of the second up-wards inclination waveform of this Yb scan electrode group is 5 μ s, in application time of the second up-wards inclination waveform that puts on this Yb scan electrode group and the difference that puts between application time of the second up-wards inclination waveform of this Yc scan electrode group also is 5 μ s, and also is 5 μ s in application time of the second up-wards inclination waveform that puts on this Yc scan electrode group and the difference that puts between application time of the second up-wards inclination waveform of this Yd scan electrode group.

In addition, can be set to be different in each difference that has between application time of two second up-wards inclination waveforms of different application time.For example, the application time that imposes on the second up-wards inclination waveform of this scan electrode Ya (n)/4 from this scan electrode Ya1 can be set to 5 μ s, the application time that imposes on the second up-wards inclination waveform of this scan electrode Yb (2n)/4 from this scan electrode Yb ((n/4)+1) can be set to 7 μ s, the application time that imposes on the second up-wards inclination waveform of this scan electrode Yc (3n)/4 from this scan electrode Yc ((2n/4)+1) can be set to 15 μ s, and can be set to 20 μ s from the application time that this scan electrode Yd ((3n/4)+1) imposes on the second up-wards inclination waveform of this scan electrode Yd (n).

In other words, in application time of the second up-wards inclination waveform that puts on this Ya scan electrode group and the difference that puts between application time of the second up-wards inclination waveform of this Yb scan electrode group is 2 μ s, in application time of the second up-wards inclination waveform that puts on this Yb scan electrode group and the difference that puts between application time of the second up-wards inclination waveform of this Yc scan electrode group is 8 μ s, and is 5 μ s in application time of the second up-wards inclination waveform that puts on this Yc scan electrode group and the difference that puts between application time of the second up-wards inclination waveform of this Yd scan electrode group.

Figure 20 a and 20b are used to explain the diagrammatic sketch that supplies to apply according to this scan electrode group control the driving method of the second up-wards inclination waveform time according to the present invention.

According to the method that is used for driving this plasma display device of the present invention, scan electrode is divided into two or more scan electrode group that comprises at least one or a plurality of scan electrodes, and the application asynchronism(-nization) of up-wards inclination waveform that puts at least one or a plurality of scan electrodes is in the application time of the up-wards inclination waveform that puts at least one or a plurality of different scan electrode group.

Shown in Figure 20 a, (it is from time point t for the second up-wards inclination waveform ₀Begin to rise, and rise to time point t ₁) during addressing period, be applied in each scan electrode in the Ya scan electrode group that is included in Figure 19, and this second up-wards inclination waveform (it is from time point t ₀Begin to rise, and rise to time point t ₂) during addressing period, be applied in each scan electrode that is included in the Yb scan electrode group.In addition, (it is from time point t for the second up-wards inclination waveform ₀Begin to rise, and rise to time point t ₃) (it is from time point t to be applied in each scan electrode of being included in the Yc scan electrode group and the second up-wards inclination waveform during addressing period ₀Begin to rise, and rise to time point t ₄) during addressing period, be applied in each scan electrode that is included in the Yd scan electrode group.

Though each second up-wards inclination waveform with different application time is applied according to each scan electrode group in Figure 20 a, it also is possible that each second up-wards inclination waveform with different application time only is applied in to some the electrode group among this scan electrode group.

For example, (it is at time point t for the second up-wards inclination waveform ₀On begin to rise, and at time point t ₁On reach this scan reference voltage (Vsc)) can during this addressing period, be applied in each scan electrode of this Ya scan electrode group, (it is at time point t for the second up-wards inclination waveform simultaneously ₀On begin to rise, and at time point t ₂On reach this scan reference voltage (Vsc)) can during this addressing period, be applied in each scan electrode of this Yb, Yc and Yd scan electrode group.

Be divided into a plurality of electrode groups at this scan electrode (Y), and under the second up-wards inclination waveform situation about being applied in, preferably, the number of this scan electrode group is set to be two or more, but is not more than the sum of this scan electrode and is driven.

Each scan electrode group can comprise one or more scan electrodes, and all scan electrode group can comprise the scan electrode of equal number, perhaps the scan electrode of varying number.For example, this Ya scan electrode group can comprise 100 scan electrodes, and this Yb scan electrode group can comprise 200 scan electrodes.

Preferably, have the second up-wards inclination waveform of identical application time and be applied in each scan electrode that is included in the identical scan electrode group.That is, the application time that (n)/4 put on the second up-wards inclination waveform of this scan electrode from Ya1 to Ya can be 10 μ s by identical being set to.

Can be set to be identical in each difference that has between application time of two second up-wards inclination waveforms of different application time.

Perhaps, can be set to be different in each difference that has between application time of two second up-wards inclination waveforms of different application time, and in this case, describe the waveform that drives referring now to Figure 20 b.

With reference to figure 20b, can be set to be different in each difference that has between application time of two second up-wards inclination waveforms of different application time.That is to say, in application time of the second up-wards inclination waveform that puts on the Ya scan electrode group with put on poor between application time of the second up-wards inclination waveform of Yb scan electrode group, that is, and at t ₂And t ₁Between difference be 5 μ s, in application time of the second up-wards inclination waveform that puts on this Yb scan electrode group with put on poor between application time of the second up-wards inclination waveform of this Yc scan electrode group, that is, at t ₃And t ₂Between difference be set to be 7 μ s, and in application time of the second up-wards inclination waveform that puts on this Yc scan electrode group with put on poor between application time of the second up-wards inclination waveform of this Yd scan electrode group, that is, at t ₄And t ₃Between difference be set to be 10 μ s.

Therefore, as shown in figure 18, can be lowered owing to during addressing period, put on the size of this noise of this up-wards inclination waveform generation of this scan electrode.

In above description with reference to figure 20a and 20b, this scan electrode (Y) can be divided into a plurality of scan electrode group, and it is different that the application time that puts on the second up-wards inclination waveform of this scan electrode during this addressing period is set to according to a plurality of scan electrodes, and differently, being set to according to each scan electrode for each application time of the second up-wards inclination waveform that puts on each scan electrode during this addressing period is also to be possible different.

Shown in Figure 21 a and 21b, according to the method that is used for driving this plasma display device of the present invention, it is different that the application time that puts on the second up-wards inclination waveform of this scan electrode (Y) during this addressing period is controlled to be according to each scan electrode (Y).

With reference to figure 21a, (it is at time point t for the second up-wards inclination waveform ₀On begin to rise, and at time point t ₁On reach this scan reference voltage (Vsc)) during this addressing period, be applied in scan electrode Y ₁And second the up-wards inclination waveform (it is at time point t ₀On begin to rise, and at time point t ₂On reach this scan reference voltage (Vsc)) during this addressing period, be applied in scan electrode Y ₂In addition, (it is at time point t for the second up-wards inclination waveform ₀On begin to rise, and at time point t ₃On reach this scan reference voltage (Vsc)) during this addressing period, be applied in scan electrode Y ₃, and this second up-wards inclination waveform (it is at time point t ₀On begin to rise, and at time point t ₄On reach this scan reference voltage (Vsc)) during this addressing period, be applied to scan electrode Y ₄In other words, (it is at time point t for the second up-wards inclination waveform ₀On begin to rise, and at time point t _mOn reach this scan reference voltage (Vsc)) during this addressing period, be applied in scan electrode Y _m

Though each second up-wards inclination waveform with different application time is applied according to each scan electrode, also can from these a plurality of scan electrodes, select the electrode of some and the second up-wards inclination waveform that each has the different application time only be imposed on the scan electrode of this selection.

For example, (it is at time point t for the second up-wards inclination waveform ₀On begin to rise, and at time point t ₁On reach this scan reference voltage (Vsc)) during this addressing period, be applied to this scan electrode Y ₁, (it is at time point t for the second up-wards inclination waveform simultaneously ₀On begin to rise, and at time point t ₂On reach this scan reference voltage (Vsc)) during this addressing period, be applied to this scan electrode Y ₂, Y ₃, Y ₄And Y _m

In addition, be identical in each difference that has between application time of two second up-wards inclination waveforms of different application time.That is to say, when putting on this scan electrode Y ₁This up-wards inclination waveform the application time and put on this scan electrode Y ₂Application time of up-wards inclination waveform between difference when being 5 μ s, putting on this scan electrode Y ₂The second up-wards inclination waveform the application time and put on this scan electrode Y ₃Application time of the second up-wards inclination waveform between poor and putting on this scan electrode Y ₃The second up-wards inclination waveform the application time and put on this scan electrode Y ₄Application time of the second up-wards inclination waveform between difference can be set to be 5 identical μ s.

Differently, can be set to be different in each difference that has between application time of two second up-wards inclination waveforms of different application time, and in this case, describe the waveform that drives referring now to Figure 21 b.

With reference to figure 21b, the difference between each application time of two second up-wards inclination waveforms is different.That is to say, when putting on this scan electrode Y ₁The second up-wards inclination waveform the application time and put on this scan electrode Y ₂Application time of the second up-wards inclination waveform between difference when being 5 μ s, putting on this scan electrode Y ₂The second up-wards inclination waveform the application time and put on this scan electrode Y ₃Application time of the second up-wards inclination waveform between difference can be set to be 7 μ s, and putting on this scan electrode Y ₃The second up-wards inclination waveform the application time and put on this scan electrode Y ₄Application time of the second up-wards inclination waveform between difference can be set to be 10 μ s.

Therefore, the size by this noise of this second up-wards inclination waveform generation that puts on this scan electrode during addressing period can be lowered.

The present invention is so described, and clearly, can change with a lot of methods.Above-mentioned variation is not considered to depart from the spirit and scope of the present invention, and will be conspicuous for those skilled in the art, and all above-mentioned modifications are intended to be included in the scope of following claim.

Claims

1. plasma display panel device, one of them frame are divided into a plurality of sons with display image, comprising:

Plasma display panel, it comprises scan electrode, keeps electrode and addressing electrode;

Scanner driver is used for applying during the reset cycle and sets up waveform to this scan electrode, and this is set up waveform and rises to first voltage with first slope, rises to second voltage with second slope then;

The addressing driver is used for when this is set up waveform and is applied in this scan electrode first positive pulse being imposed on this addressing electrode.

2. according to the device of claim 1, wherein the crest voltage of this first positive pulse is between 1 to 1.5 times of the voltage of the data pulse that puts on this addressing electrode during the addressing period.

3. according to the device of claim 1, wherein this first positive pulse is by substantially to apply with this mode of setting up synchronous waveform.

4. according to the device of claim 1, wherein this first positive pulse is applied to addressing electrode on one or more sons field of a plurality of sons field.

5. according to the device of claim 4, wherein this first positive pulse has maximum pulse width on the son field that has minimum gray level weight value among a plurality of sons field.

6. according to the device of claim 1, wherein this first positive pulse is by from son with minimum gray level weight value, is applied to continuous order at least one of first and second sons, perhaps at least one of first to the 3rd son field.

7. according to the device of claim 1, wherein this first slope is greater than second slope.

8. according to the device of claim 1, wherein the size of this first voltage is identical with the voltage that puts on the scan reference voltage of this scan electrode during following this addressing period of this reset cycle substantially.

9. according to the device of claim 1, varying in size wherein at second voltage that is applied to this scan electrode on of a plurality of sons in the size that on other remaining sons, is applied to second voltage of this scan electrode.

10. according to the device of claim 1, the offset waveform of keeping that wherein will have at the voltage swing between 80V and the 120V is applied to this and keeps electrode during this addressing period.

11. according to the device of claim 1, wherein be applied to scan electrode respectively and keep first of electrode that to keep pulse not overlapping mutually, and be applied to scan electrode respectively and keep electrode last to keep pulse not overlapping mutually.

12. according to the device of claim 1, wherein first keep pulse and be applied to this scan electrode or this when keeping electrode when this, second positive pulse is applied to this addressing electrode.

13. according to the device of claim 12, wherein the voltage of this second positive pulse is identical with first positive pulse or the voltage that puts on this data pulse of this addressing electrode substantially.

14.,, but be not more than 200 μ m wherein at scan electrode with keep distance between electrodes and be not less than 90 μ m according to the device of claim 1.

15. a plasma display panel device, one of them frame are divided into a plurality of sons field to show an image, this equipment comprises:

Scanner driver is used for applying during the reset cycle and sets up waveform and give this scan electrode, and this is set up waveform and rises to first voltage with first slope, rises to second voltage with second slope then;

Keep driver, be used in the aft section of this reset cycle and during following the addressing period of this reset cycle, the offset waveform of keeping that will have the rate of rise imposes on this and keeps electrode; With

16. ask 15 device according to right, wherein this rate of rise is since a voltage higher than ground level.

17. a plasma display panel device, one of them frame are divided into a plurality of sons field to show an image, this equipment comprises:

Scanner driver, be used for the first up-wards inclination waveform and decline tilt waveform are imposed on this scan electrode, this first up-wards inclination waveform rises to first voltage with first slope during the cycle of setting up, rise to second voltage with second slope then, and should during the cycle of removing, drop to tertiary voltage by the decline tilt waveform, and be used to apply the second up-wards inclination waveform, this second up-wards inclination waveform rises to the 4th voltage from tertiary voltage during addressing period, and applying scanning impulse then, it drops to the 5th voltage from the 4th voltage; With

18. according to the device of claim 17, wherein the slope of the second up-wards inclination waveform is less than the slope of keeping pulse that applies during the cycle of keeping.

19. according to the device of claim 17, wherein the second up-wards inclination waveform was maintained on the 4th voltage during certain cycle.

20. according to the device of claim 17, wherein before first of the scanning impulse that puts on this scan electrode is applied in till this up-wards inclination waveform be applied in.