CN1776790A

CN1776790A - Plasma display apparatus and driving method thereof

Info

Publication number: CN1776790A
Application number: CNA2005101251493A
Authority: CN
Inventors: 郑允权
Original assignee: LG Electronics Inc
Current assignee: LG Electronics Inc
Priority date: 2004-11-19
Filing date: 2005-11-21
Publication date: 2006-05-24
Anticipated expiration: 2025-11-21
Also published as: KR20060056165A; KR100656704B1; CN1776788A; CN100458889C; CN100472589C; CN1776789A; CN100501821C

Abstract

A plasma display apparatus and a driving method of the same are provided. The plasma display apparatus comprises a plasma display panel comprising a scan electrode, a sustain electrode and an address electrode; a first controller for controlling an application time point of the data pulse for the address electrode during address period to be different from an application time point of a scan pulse for the scan electrode; and a second controller for controlling a last sustain pulse applied to at least one of the scan electrode and the sustain electrode, wherein the second controller controls, when the temperature in the plasma display panel or the temperature around the plasma display panel is substantially a high temperature, an interval between the application time point of the last sustain pulse and an initialization signal of a next subfield to be longer than the interval in room temperature.

Description

Plasma display panel device and driving method thereof

Technical field

The present invention relates to plasma display panel device, and more specifically, relate to plasma display panel device and driving method thereof, be used to prevent erroneous discharge, fault discharge and improper discharge, increase darkroom contrast, be used to increase the work allowance, and the application time point of the pulse that is used for being in particular in that differently addressing period and the cycle of keeping are used.

Background technology

In existing Plasmia indicating panel, the space between the barrier rib that forms between plate and the rear panel provides a unit cell in front.Main discharge gas is filled in each unit, such as neon (Ne), and the mixed gas (Ne+He) of helium (He) or neon and helium and comprise the in a small amount inert gas of xenon (Xe).Pixel of a plurality of formation in these unit.When using HF voltage that discharge takes place, the fluorescent material that inert gas generation vacuum ultraviolet and radiation are provided with between barrier rib is realized image thus.Because the structure of its slim and light weight considers that Plasmia indicating panel is one of display device of future generation.

Fig. 1 shows the view of the structure of general Plasmia indicating panel.

As shown in Figure 1, Plasmia indicating panel comprises front panel 100 and rear panel 110.Front panel 100 have a plurality of with each in pairs and the scan electrode 102 that on front glass 101, forms and a plurality of electrode pairs of keeping of keeping the layout of electrode 103 as the display surface of display image thereon.Plate 110 has and arranges on the glass 111 of back intersecting a plurality of a plurality of addressing electrodes 113 of keeping electrode pair in the back, this back glass 111 and front panel 100 parallel spaced apart and be sealed to front panel 100.

Front panel 100 comprises paired scan electrode 102 and keeps electrode 103, in a pixel, to carry out discharge mutually, and keep luminous, in other words, paired scan electrode 102 and pairs of sustain electrodes 103 each have transparency electrode (a) that forms by transparent ITO material and the bus electrode (b) that forms by metal material.Scan electrode 102 and keep electrode 103 and be coated with one or more dielectric layers 104, its control discharge current and insulation paired electrode.On dielectric layer 104 by magnesium oxide (MgO) form protective seam 105, to promote discharge.

Rear panel 110 comprises the barrier rib of bar shaped (or net form), and it is used to form a plurality of discharge spaces (discharge cell just) that are arranged in parallel.Rear surface 110 comprises that being parallel to barrier rib 112 arranges and carry out address discharge and produce vacuum ultraviolet a plurality of addressing electrode 113.Red (R), green (G) and blue (B) fluorescent material 114 radiate visible light with display image in address discharge, and are coated on the upper surface of rear panel 110.Be formed on the following dielectric layer 115 that is used to protect addressing electrode 113 between addressing electrode 113 and the fluorescent material 114.

In the Plasmia indicating panel of said structure, with matrix form structure electrode.This will describe with reference to figure 2 below.

Fig. 2 shows the view of the arrangement of electrodes structure that forms on existing Plasmia indicating panel.

With reference to figure 2, on Plasmia indicating panel 200, be parallel to and keep electrode (Z1 is to Zn) formation scan electrode (Y1 is to Yn), and form addressing electrode (X1 is to Xm) cross scan electrode (Y1 is to Yn) and keep electrode (Z1 is to Zn).

Form discharge cell in scan electrode (Y1 is to Yn), the point of crossing of keeping electrode (Z1 is to Zn) and addressing electrode (X1 is to Xm).Therefore, on Plasmia indicating panel, form discharge cell with matrix form.

Be used to provide the driving circuit of predetermined pulse to be affixed to Plasmia indicating panel, constitute plasma display panel device thus with above-mentioned arrangement of electrodes.

The method that is used at plasma display panel device concrete manifestation image gray levels has been described in Fig. 3 below.

Fig. 3 has illustrated the method that is used in the gray level of existing plasma display panel device represent images.

As shown in Figure 3, be used in the existing method of plasma display panel device presentation video gray level a frame being divided into several height field, each son field has different radiation numbers.Each son field is divided into reset cycle (RPD), the addressing period (APD) that is used to select discharge cell that is used for the whole unit of initialization and is used for representing according to the discharge number keep the cycle (SPD) of gray level.For example, when with 256 gray level display images, as shown in Figure 2, will be divided into eight sons (SF1 is to SF8), and each of eight son fields (SF1 is to SF8) is divided into reset cycle, addressing period once more and is kept the cycle corresponding to 1/60 second frame period (16.67ms).

Each son field has the same period of reset cycle and addressing period.The address discharge that is used to select the unit that discharges is by producing at addressing electrode and the voltage difference between the scan electrode as transparency electrode.Increase with the ratio of 2n (wherein n=0,1,2,3,4,5,6,7) for each son field cycle of keeping.Because as mentioned above each son keep cyclomorphosis, that controls each son keeps the cycle (just, keeping the discharge number), presentation video gray level thus.

Fig. 4 is the oscillogram that the drive waveform examples of existing Plasmia indicating panel has been described.Fig. 5 A is the stepping view that the wall CHARGE DISTRIBUTION in the discharge cell that the drive waveforms by Fig. 4 changes has been described to 5E.

The drive waveforms of Fig. 4 will be described to the wall CHARGE DISTRIBUTION of 5E with reference to figure 5A.

With reference to figure 4, each son (SFn-1, SFn) comprise reset cycle (RP) of the discharge cell 1 that is used for the whole screen of initialization, be used to select the addressing period (AP) of discharge cell, be used to keep the keeping the cycle (SP) and be used for wiping erase cycle (EP) of discharge of selected discharge cell 1 at the wall electric charge of discharge cell 1.

In the erase cycle (EP) of (n-1) son (SFn-1), will wipe tilt waveform (ERR) and be added to and keep electrode (Z).During erase cycle (EP), 0V is added to scan electrode (Y) and addressing electrode (X).Wiping tilt waveform (ERR) is to have the positive tilt waveform that rises to the positive voltage of keeping voltage (Vs) from the 0V assembly.During wiping tilt waveform (ERR), in opening the unit at scan electrode (Y) with keep between the electrode (Z) and produce erasure discharge.During erasure discharge, in opening the unit, wipe the wall electric charge.As a result, each discharge cell 1 has wall CHARGE DISTRIBUTION shown in Fig. 5 A afterwards immediately in erase cycle (EP).

Setting up the cycle in (SU) of the reset cycle (RP) of n (SFn) beginning therein is added to all scan electrodes (Y) with positive tilt waveform (PR), and 0V is added to keeps electrode (Z) and addressing electrode (X).During the positive tilt waveform (PR) in the cycle of setting up (SU), the voltage of scan electrode (Y) is increased to greater than the positive resetting voltage of keeping voltage (Vs) (Vr) gradually from the positive voltage (Vs) of keeping.During positive tilt waveform (PR), produce dark discharge between scan electrode in the discharge cell of whole screen (Y) and the addressing electrode (X), and simultaneously, at scan electrode (Y) with keep between the electrode (Z) and produce dark discharge.As the result of dark discharge, the cycle of setting up (SU) afterwards, shown in Fig. 5 B, positive wall electric charge is stayed addressing electrode (X) and is kept on the electrode (Z), and negative wall electric charge is stayed on the scan electrode (Y).In the cycle of setting up (SU), when producing dark discharge, will be initialized as near the voltage that can produce the trigger voltage (Vf) of discharge at scan electrode (Y) and gap voltage (Vg) and the gap voltage (Vg) between scan electrode (Y) and addressing electrode (X) kept between the electrode (Z).

The cycle of setting up (SU) afterwards, at remove the cycle (scan electrode) of reset cycle (RP), negative tilt waveform (NR) is added to scan electrode (Y).Simultaneously, the positive voltage (Vs) of keeping is added to and keeps electrode (Z) and 0V is added to addressing electrode (X).During negative tilt waveform (NR), the voltage of scan electrode (Y) reduces to negative erasing voltage (Ve) gradually from the positive voltage (Vs) of keeping.During negative tilt waveform (NR), in the discharge cell of whole screen, between scan electrode (Y) and addressing electrode (X), produce dark discharge, and while even at scan electrode (Y) with keep between the electrode (Z) and produce dark discharge.As the result of the dark discharge in the cycle of removing (SD), the wall CHARGE DISTRIBUTION in each discharge cell 1 is changed into has optimum address discharge condition, shown in Fig. 5 C.At this moment, wipe the unwanted too much wall electric charge of address discharge, and the wall electric charge of scheduled volume is stayed on the scan electrode (Y) and addressing electrode (X) of each discharge cell 1.Be converted to negative polarity at the wall electric charge of keeping on the electrode (Z) from positive polarity, negative simultaneously wall electric charge moves and accumulation from scan electrode (Y).Removing the cycle in (SD) of reset cycle (RP), when producing dark discharge, at scan electrode (Y) with keep gap voltage between the electrode (Z), the gap voltage between scan electrode (Y) and addressing electrode (X) is near discharge start voltage (Vf).

In addressing period (AP), with negative scanning impulse (SCNP) order is added to scan electrode (Y), scan electrode (Y) and negative scanning impulse (SCNP) synchronous, feasible positive data pulse (DP) is added to addressing electrode (X).(SCNP) voltage is scanning voltage to scanning impulse, and it drops to negative scanning voltage (Vy) from 0V or near the negative scan bias voltage (Vyb) of 0V.Data pulse voltage (DP) is positive data voltage (Va).During addressing period (AP), will be added to less than the positive positive Z bias voltage (Vzb) of keeping voltage (Vs) and keep electrode Z.Wherein immediately gap voltage is maintained level afterwards near discharge start voltage (Vf) in the reset cycle (RP), gap voltage between scan electrode (Y) and addressing electrode (X) surpasses discharge start voltage (Vf), and produces address discharge having used opening in the unit of scanning voltage (Vsc) and data voltage (Va) between electrode (X and Y).Main address discharge between scan electrode (Y) and addressing electrode (X) produces the starting charged particle in discharge cell, shown in Fig. 5 D, cause at scan electrode (Y) and keep secondary discharge between the electrode (Z).Open wall CHARGE DISTRIBUTION in the unit shown in Fig. 5 E what produce address discharge.

Basically keep state shown in Fig. 5 C in the wall CHARGE DISTRIBUTION in the closing unit that does not produce address discharge.

In the cycle of keeping (SP), the positive pulse (SUSP) of keeping of keeping voltage (Vs) alternately is added to scan electrode (Y) and keeps electrode (Z).Opening in the unit of selecting by address discharge, for each keep pulse (SUSP) with the help of the wall CHARGE DISTRIBUTION of Fig. 5 E at scan electrode (Y) with keep between the electrode (Z) generation and keep discharge.In closing unit, during the cycle of keeping (SP), do not produce discharge.This is because the wall CHARGE DISTRIBUTION of closing unit is kept the state shown in Fig. 5 C, make, when initial maintenance voltage (Vs) is added to scan electrode (Y), surpass discharge start voltage (Vf) at scan electrode (Y) and the gap voltage kept between the electrode (Z).

But, in existing plasma display panel device, shortcoming is, during the reset cycle (RP) of the erase cycle (EP) of (n-1) son SFn-1 (SU) and n field SFn, produce discharge several times with initialization discharge cell 1 and control wall electric charge, reduced darkroom contrast thus and reduced contrast-ratio.Following table is that the erase cycle (EP) of electric discharge type and the existing son (SFn-1) in existing plasma display panel device and the discharge count purpose of middle generation of reset cycle (RP) are arranged.

Table 1

As shown in table 1, that opens in (n-1) son SFn-1 opens in the unit, in erase cycle (EP) with during the reset cycle (RP), produce three times at scan electrode (Y) and the surface-discharge kept between the electrode (Z), and twice of the opposite discharge generation between scan electrode and addressing electrode.Formerly in the closing unit that son (SFn) is closed, in erase cycle (EP) with during the reset cycle (RP), produce twice at scan electrode (Y) and the surface-discharge kept between the electrode (Z), and twice of the opposite discharge generation between scan electrode (Y) and addressing electrode (X).

When considering that contrast-response characteristic should minimize exit dose as far as possible, the discharge that produces several times in erase cycle (EP) with during the reset cycle (RP) has increased erase cycle (EP) and the radiation of reset cycle (RP), has caused the problem of darkroom contrast reduction thus.Specifically, at scan electrode (Y) with keep surface-discharge between the electrode (Z) significantly bright radiation of the opposite discharge of comparing between scan electrode (Y) and addressing electrode (X) is provided, and therefore, compare opposite discharge and harmful effect is arranged for darkroom contrast.

In existing plasma display panel device, in the erase cycle (EP) of (n-1) son SFn-1, not exclusively wipe the wall electric charge, and therefore, wherein negative wall electric charge is gone up too much accumulation at scan electrode (Y), does not produce dark discharge in (SU) n setting up the cycle of SFn.If in the cycle of setting up (SU), normally do not produce dark discharge, not initialization discharge cell.For in the cycle of setting up, producing discharge, must increase resetting voltage (Vr).If in the cycle of setting up (SU), do not produce dark discharge, the reset cycle (RP) afterwards discharge cell cause improper discharge or erroneous discharge thus not in optimum addressing condition.When at the positive afterwards wall electric charge of the erase cycle (EP) of (n-1) son SFn-1 at scan electrode (Y) when too much accumulating, setting up the cycle in (SU) of a n SFn, when keeping voltage (Vs) as the initial voltage of positive tilt waveform (PR) positive and be added to scan electrode (Y), produce too much discharge, all unit of inhomogeneous thus initialization.

Fig. 6 illustrated when driving Plasmia indicating panel by the drive waveforms of Fig. 4, at scan electrode with keep the external voltage that applies between the electrode and the variation of the gap voltage in discharge cell in the cycle of foundation (SU).

Fig. 6 shows in the cycle of setting up (SU) at scan electrode (Y) and keeps applied external voltage (Vyz) and the gap voltage in discharge cell (Vg) between the electrode Z.In Fig. 6, be the external voltage that is added to each scan electrode (Y) and keeps electrode (Z) by the applied external voltage (Vyz) of solid line indication, and approximate the voltage of positive tilt waveform (PR) greatly, keep electrode (Z) because 0V is added to.In Fig. 6,1., 2. and 3. dotted line indicates the wall electric charge by in discharge cell, the gap voltage (Vg) that provides for discharge gas.Change the change that gap voltage (Vg) 1., 2. and is 3. indicated as dotted line because whether produce discharge in the formerly sub-field of the basis of the wall quantity of electric charge in discharge cell.Scan electrode (Y) and keep between the electrode (Z) applied external voltage (Vyz) and in the relation of the gap voltage that provides for discharge gas in the discharge cell (Vg) shown in following equation 1.

[equation 1]

Vyz＝Vg+Vw

In Fig. 6, the wall electric charge that dotted line gap voltage (Vg) 1. is illustrated in the discharge cell is fully wiped, thus wall electric charge situation about fully reducing.Gap voltage (Vg) and applied external voltage (Vyz) increase with being directly proportional, produce dark discharge when gap voltage (Vg) equals discharge start voltage (Vf).Because this dark discharge, the gap voltage in discharge cell are initialized to discharge start voltage (Vf).

In Fig. 6, dotted line gap voltage (Vg) 2. is illustrated in the strong discharge that produces during the erase cycle of (n-1) son (SFn-1).This gap voltage (Vg) is reversed in the discharge cell polarity at wall CHARGE DISTRIBUTION mesospore electric charge.In erase cycle (EP) afterwards, because strong discharge, the polar switching of the wall electric charge of accumulating on scan electrode is a positive polarity.When having large scale PDP, because there is low homogeneity in discharge cell, or the slope of wiping tilt waveform (ERR) changes this situation that produces according to temperature variation.Primary clearance voltage (Vg) increases too much, as the dotted line of Fig. 6 2. shown in, and therefore, in the cycle of setting up (SU), voltage (Vs) is added to scan electrode and at the same time, gap voltage (Vg) surpasses discharge start voltage (Vf), produces strong discharge thus with positive keeping.Because the discharge that this is strong, in the cycle of setting up (SU) with remove the cycle in (SD), not initialization discharge cell in the wall CHARGE DISTRIBUTION of optimum addressing condition, in other words, in the wall CHARGE DISTRIBUTION of Fig. 4 C.Therefore, can in the pent closing unit of needs, produce address discharge.In other words, when producing strong erasure discharge in the erase cycle before the reset cycle, discharge can make a mistake.

In Fig. 6, during the erase cycle (EP) of (n-1) son SFn-1 (SU), dotted line gap voltage (Vg) expression 3. erasure discharge very weak or that do not produce is kept as the wall CHARGE DISTRIBUTION that the discharge result forms of keeping that produced before the erasure discharge of discharge cell.In detailed description, as shown in Figure 3, in the time will keeping pulse (SUSP) and be added to scan electrode (Y), produce and keep discharge at last.As the result who keeps discharge at last, negative wall electric charge stays that scan electrode (Y) is gone up and positive wall electric charge is stayed and kept on the electrode (Z).But this wall electric charge need be wiped free of carrying out normal initialization in next height field, but when erasure discharge very a little less than or when not producing, polarity does not change.Erasure discharge reason very weak or that do not produce is in PDP, and the homogeneity of discharge cell slope inhomogeneous or that wipe tilt waveform (ERR) changes according to temperature variation.Primary clearance voltage (Vg) is crossed low and is had as the dotted line of Fig. 6 negative polarity shown in 3., and therefore, even positive tilt waveform (PR) is increased to resetting voltage (Vr) in the reset cycle, the gap voltage in discharge cell (Vg) is not equal to discharge start voltage (Vf).Therefore, not in the cycle of setting up (SU) with remove the cycle in (SD) and to produce dark discharge.As a result, very weak or when not producing when erasure discharge in the erase cycle before the reset cycle, carry out initialization irrelevantly, cause erroneous discharge or improper discharge thus.

The dotted line of Fig. 6 2. in, relation between gap voltage (Vg) and discharge start voltage (Vf) such as equation 2 expressions, and as 6 dotted line 3. shown in, relation in the middle of gap voltage (Vg) and discharge start voltage (Vf) such as equation 3 are represented:

[equation 2]

Vgini+Vs＞Vf

[equation 3]

Vgini+Vr＜Vf

Wherein, Vgini is illustrated in and begins the cycle of setting up (SU) primary clearance voltage before, as shown in Figure 6.

Consider above-mentioned shortcoming, the gap voltage condition (or wall charge condition) of carrying out normal initialization in erase cycle (EP) with in the reset cycle (RP) can be expressed as the equation 4 that satisfies equation 2 and 3.

[equation 4]

Vf-Vr＜Vgini＜Vf-Vs

If the cycle of setting up (SU) before primary clearance voltage (Vgini) do not satisfy the condition of equation 4, existing plasma display panel device can cause erroneous discharge, fault discharge or improper discharge and reduce the work allowance.In other words, in existing plasma display panel device,, should normally carry out the erase operation in erase cycle (EP) in order to guarantee functional reliability and work allowance, but as mentioned above, according to the homogeneity of discharge cell or the improper execution of serviceability temperature possibility of PDP.

In existing plasma display panel device, the shortcoming of existence is, because the too much space charge that occurs in hot environment and the active movement of space charge, it is unstable that the wall CHARGE DISTRIBUTION becomes, and causes erroneous discharge thus, fault discharge or improper discharge, and therefore, reduce the work allowance.This will describe in detail to 7C with reference to figure 7A.

Fig. 7 A has illustrated when the motion that is driven Plasmia indicating panel time space electric charge and space charge by the drive waveforms of Fig. 4 in hot environment to 7C.

In hot environment, the quantity of the space charge that produces in discharge is compared room temperature or low temperature to be increased with momentum.Therefore,, produce a lot of space charges keeping in the discharge of (n-1) son SFn-1, and a n SFn set up the cycle (SU) afterwards, shown in Fig. 7 A, a lot of space charges 300 of active movement are stayed in the discharge space.

Shown in Fig. 7 A, when the space charge 300 of active movement exists, during addressing period, data voltage (Va) is added to addressing electrode (X) in discharge space, and scanning voltage (Vy) is added to scan electrode (Y).Shown in Fig. 7 B, result as the foundation in the cycle of setting up (SU) discharge, reconfigure as the positive space charge 300 of the result who sets up discharge with at the negative wall electric charge that scan electrode (Y) is gone up accumulative total, and negative space charge 300 and reconfigure at the positive wall electric charge that addressing electrode (X) is gone up accumulation.

Shown in Fig. 7 C, by setting up being wiped free of of discharging and form at negative wall electric charge on the scan electrode (Y) and the positive wall electric charge on addressing electrode (X), though make that (Vy) be added to addressing electrode (X) and scan electrode (Y), gap voltage (Vg) is not equal to discharge start voltage (Vf) with data voltage (Va) and scanning voltage.Therefore, do not produce address discharge.Therefore, shortcoming is when the drive waveforms with Fig. 4 is added to the PDP that is used in the hot environment mistake of frequently opening the unit to be write.

Fig. 8 has illustrated another example according to the drive waveforms of the existing driving method of plasma display panel device.

As shown in Figure 8, in plasma display panel device, by the son field is divided into the reset cycle that is used for all unit of initialization, be used to select the addressing period of discharge cell, be used to keep the keeping the cycle of discharge of selected unit, and the erase cycle that is used for wiping at the wall electric charge of discharge cell drives all unit.

Setting up in the cycle of reset cycle, rising edge waveform (ramp-up) is added to all scan electrodes (Y) simultaneously.During this rising edge waveform, in the discharge cell of whole screen, produce weak dark discharge.Because this sets up discharge, at addressing electrode (X) with keep electrode (Z) and go up the positive wall electric charge of accumulation, and go up the negative wall electric charge of accumulation at scan electrode (Y).

In the cycle of removing, use rising edge waveform and afterwards, the negative edge waveform that drops to less than the specific voltage level of ground level (GND) from the positive voltage less than the crest voltage of rising edge waveform produces weak erasure discharge the unit, fully wipe the wall electric charge that too much forms in scan electrode (Y) thus.Because remove discharge, enough stable address discharges of wall charge generation are arranged, it will be stayed in the unit equably.

In addressing period, negative scanning impulse is added to scan electrode (Y) in proper order, and simultaneously, scan electrode (Y) and scanning impulse are synchronous, thus positive data pulse are added to addressing electrode (X).In the time will being added to the wall voltage that in the reset cycle, produces at the voltage difference between scanning impulse and the data pulse.The wall electric charge forms in the discharge cell of having used data pulse.In the unit of selecting by address discharge, form the wall electric charge, make when voltage (Vs) is kept in application, to produce discharge.Positive voltage (Vz) is provided to keeps electrode, make during erase cycle and addressing period and the voltage difference of scanning voltage reduces, prevent erroneous discharge thus with scan electrode.

In the cycle of keeping, will keep pulse (Sus) and alternately be added to scan electrode (Y) and keep electrode (Z).In the unit of being selected by address discharge, when the wall voltage in the unit is added to when keeping pulse, applying sustain pulse no matter when at scan electrode (Y) with keep to produce between the electrode (Z) and keep discharge, just, shows and discharges.

Finish keep discharge after, can also comprise erase cycle.In this erase cycle, the voltage of removing tilt waveform (ramp-ers) with narrow pulse width and low voltage level is provided to keeps electrode (Z), wipes the residue wall electric charge in the unit of whole screen thus.

In the plasma display panel device that uses this drive waveforms to drive, in addressing period, the application time point of scanning impulse that is added to scan electrode (Y) is identical with the application time point of the data pulse that is added to addressing electrode (X1 is to Xn).In existing driving method, will be described in the scanning impulse in the addressing period and the application time point of data pulse with reference to figure 9 below.

Fig. 9 has illustrated the application time point of the pulse of using in addressing period in the existing driving method of plasma display panel device.

As shown in Figure 9, in the driving method of existing plasma display panel device, in addressing period, all data pulses are being added to addressing electrode (X1 is to Xn) with the identical time (ts) that scanning impulse is added to scan electrode (Y).If at identical time point data pulse and scanning impulse are added to addressing electrode (X1 is to Xn) and scan electrode (Y) respectively, produce noise with being added in the waveform of keeping electrode (Z) at the waveform that is added to scan electrode (Y).Below with reference to Figure 10 example when the noise that produces is described when identical time point is added to addressing electrode (X1 is to Xn) and scan electrode with data pulse and scanning impulse respectively.

Figure 10 has illustrated the noise of the pulse generation of using from addressing period in the existing driving method of plasma display panel device.

As shown in figure 10, in the driving method of existing plasma display panel device, if in addressing period, respectively data pulse and scanning impulse are provided to addressing electrode (X1 is to Xn) and scan electrode (Y), produce noise being added to scan electrode (Y) and keeping in the waveform of electrode (Z).Produce noise because of the capacitive coupling of PDP.At the unexpected time point that rises of data pulse, produce the rising noise in the waveform of electrode (Z) being added to scan electrode (Y) and keeping, and the time point that descends suddenly in data pulse is being added to scan electrode (Y) and is keeping generation decline noise in the waveform of electrode (Z).

As mentioned above, exist the data pulse noise be added to scan electrode (Y) and be added to addressing electrode (X) simultaneously to produce noise being added to scan electrode (Y) and keeping in the waveform of electrode (Z), and cause afterwards in addressing period, to produce unsettled address discharge, reduce the shortcoming of the driving efficient of Plasmia indicating panel thus.

In the existing plasma display panel device that uses this drive waveforms to drive, cause erroneous discharge by the high temperature around the panel usually.The erroneous discharge that is caused by temperature is described below with reference to Figure 11.

Figure 11 has illustrated the erroneous discharge that depends on temperature in based on the plasma display panel device of existing driving method by the drive waveforms operation.

With reference to Figure 11, in by the plasma display panel device of operating according to the drive waveforms of existing driving method, when the temperature of panel area is high relatively face to face, increase the ratio that reconfigures of space electric charge 401 and wall electric charge 400 in the discharge cell, and the absolute magnitude that participates in the wall electric charge of discharge reduces, and causes erroneous discharge thus.Space charge 401 exists in the space of discharge cell, and unlike wall electric charge 400, does not participate in discharge.

For example, the ratio that reconfigures of space charge 401 and wall electric charge 400 increases in addressing period, and the amount that participates in the wall electric charge 400 of address discharge reduces, and makes the address discharge instability thus.When later execution addressing, fully guaranteed to be used to reconfigure the time of space charge 401 and wall electric charge 400.Therefore, address discharge is unstable more.Therefore, the high temperature erroneous discharge taking place, has closed the discharge cell of opening in addressing period thus in the cycle of keeping.

When the temperature of panel area is high relatively face to face, produces in the cycle of keeping and keep under the situation of discharge, space charge 401 quickens in discharge, and therefore, the ratio that reconfigures of space charge 401 and wall electric charge 400 increases.Therefore, the shortcoming of existence is after any one keeps discharge, and the reconfiguring of space charge 401 and wall electric charge 400 causes that the amount of the wall electric charge 400 that participates in keeping discharge reduces, and causes not produce the high temperature erroneous discharge that the next one is kept discharge thus.

Summary of the invention

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

The plasma display panel device and the driving method thereof that the purpose of this invention is to provide the discharge that is used for stablizing hot environment.

Another object of the present invention provides plasma display panel device and driving method thereof, the application time point that is used for being provided with the data pulse be added to addressing electrode (X) is different from the application time point of the scanning impulse that is added to scan electrode (Y), and also improve the waveform of in the cycle of keeping, using, reduce noise thus and prevent that the addressing allowance from reducing, and reduces erroneous discharge simultaneously.

For realizing these and other advantage and according to purpose of the present invention, as particularly and described widely, provide a kind of plasma display panel device, it comprises: Plasmia indicating panel, it comprises scan electrode, keeps electrode and addressing electrode; First controller, it is used to be arranged on the application time point that the application time point that is used for the data pulse of addressing electrode during the addressing period is different from the scanning impulse that is used for scan electrode; With second controller, it is used to control the last scanning impulse that is added at least one scan electrode and keeps electrode, wherein when the temperature around the temperature in the Plasmia indicating panel or the Plasmia indicating panel is too high, the interval when this second controller is arranged on interval between the initializing signal of the application time point of keeping pulse at last and next son field greater than room temperature.

The present invention can reduce noise, and the discharge of PDP in the stable hot environment, suppresses to produce erroneous discharge according to associated temperature thus.

Description of drawings

To be described in detail with reference to the attached drawings the present invention, the element that wherein similar numeral is similar.

Fig. 1 has illustrated the structure of existing Plasmia indicating panel;

Fig. 2 has illustrated the structural arrangement of the electrode that forms in existing Plasmia indicating panel;

Fig. 3 has illustrated the method that is used in existing plasma display panel device presentation video gray level;

Fig. 4 is the oscillogram of example that the drive waveforms of existing Plasmia indicating panel has been described;

Fig. 5 A is the stepping view that the wall CHARGE DISTRIBUTION in the discharge cell that is changed by the drive waveforms of Fig. 4 has been described to 5E;

Fig. 6 illustrated when driving Plasmia indicating panel by the drive waveforms of Fig. 4, in the cycle of setting up at scan electrode with keep the external voltage that applies between the electrode and the variation of the gap voltage in discharge cell;

Fig. 7 A has illustrated that to 7C space charge and space charge when the drive waveforms by Fig. 4 drives Plasmia indicating panel in hot environment move;

Fig. 8 has illustrated another example according to the drive waveforms of the existing driving method of plasma display panel device;

Fig. 9 has illustrated the application time point of the pulse that applies in addressing period in the existing driving method of plasma display panel device;

Figure 10 has illustrated the noise of the pulse generation that applies in addressing period in the existing driving method of plasma display panel device;

Figure 11 has illustrated the erroneous discharge that is produced by the temperature in the plasma display panel device of operating based on the drive waveforms of existing driving method;

Figure 12 is the oscillogram that has illustrated according to the driving method of the plasma display panel device of first embodiment of the invention;

Figure 13 is the oscillogram that has illustrated according to the drive waveforms of the first sub-field duration in the driving method of the plasma display panel device of second embodiment of the invention;

Figure 14 is the oscillogram that has illustrated according to the drive waveforms of the first sub-field duration in the driving method of the plasma display panel device of third embodiment of the invention;

Figure 15 A is the stepping view that the wall CHARGE DISTRIBUTION in the discharge cell that is changed by Figure 14 has been described to 15E;

Figure 16 is the oscillogram that the drive waveforms of all the other the sub-field duration except the first sub-field duration in according to the driving method of the plasma display panel device of third embodiment of the invention has been described;

Figure 17 has illustrated the wall CHARGE DISTRIBUTION that the drive waveforms by Figure 16 forms immediately in discharge cell after the cycle of keeping;

Figure 18 has illustrated wall CHARGE DISTRIBUTION and the gap voltage in discharge cell that the drive waveforms by Figure 14 and 16 formed before the cycle of setting up;

Figure 19 illustrated when driving Plasmia indicating panel by the drive waveforms of Figure 14 and 16, in the cycle of setting up at scan electrode with keep the external voltage that applies between the electrode and the variation of the gap voltage in discharge cell;

Figure 20 has illustrated that the wall charge polarity of being kept in erase cycle with during the reset cycle on the electrode by the existing exemplary driver waveform of Fig. 4 changes;

Figure 21 has illustrated that the drive waveforms by Figure 14 and 16 changes at the wall charge polarity of keeping during the reset cycle on the electrode;

Figure 22 is the oscillogram that has illustrated according to the drive waveforms of the first sub-field duration in the driving method of the plasma display panel device of fourth embodiment of the invention;

Figure 23 is the oscillogram that has illustrated according to the drive waveforms of the sub-field duration of residue except first son in the driving method of the plasma display panel device of fourth embodiment of the invention;

Figure 24 is the oscillogram that has illustrated according to the driving method of the plasma display panel device of fifth embodiment of the invention;

Figure 25 is the oscillogram that has illustrated according to the drive waveforms of the driving method of the plasma display panel device of sixth embodiment of the invention;

Figure 26 is the oscillogram that has illustrated according to another drive waveforms of the driving method of the plasma display panel device of sixth embodiment of the invention;

Figure 27 A has illustrated based in the drive waveforms according to the driving method of plasma display panel device of the present invention to 27E, data pulse has been added to the example of each addressing electrode (X1 is to Xn) at the application time point of the application time point that is different from scanning impulse;

Figure 28 A and 28B have illustrated by drive waveforms according to the present invention and have reduced noise;

Figure 29 has illustrated addressing electrode (X1 is to Xn) has been grouped into four address electrodes of address electrode group to be described in according to another drive waveforms in the driving method of the plasma display panel device of seventh embodiment of the invention;

Figure 30 A illustrated in the drive waveforms according to the driving method of the plasma display panel device of seventh embodiment of the invention to 30C, addressing electrode (X1 is to Xn) is grouped into a plurality of electrode groups and data pulse is added to the example of each electrode group at the application time point of the application time point that is different from scanning impulse;

Figure 31 illustrated in the drive waveforms according to the driving method of the plasma display panel device of eighth embodiment of the invention, and the application time point that scanning impulse is set according to each the son field in the frame is different from the example of the application time point of data pulse;

Figure 32 A has illustrated the more detailed description of the drive waveforms of Figure 31 to 32C;

Figure 33 is the block diagram that has illustrated according to the plasma display panel device of the embodiment of the invention.

Embodiment

To in more detailed mode the preferred embodiments of the present invention be described with reference to the accompanying drawings.

Figure 12 is the oscillogram that has illustrated according to the driving method of the plasma display panel device of first embodiment of the invention.The drive waveforms of Figure 12 is added to three electrode AC creeping discharge type Plasmia indicating panels (PDP) as shown in Figure 2.

With reference to Figure 12, each son (SFn-1 and SFn) comprises the reset cycle (RP) of the discharge cell that is used for the whole screen of initialization, be used to select the addressing period (AP) of discharge cell, be used to keep the keeping the cycle (SP) and be used for wiping erase cycle (EP) of discharge of selected discharge cell at the wall electric charge of discharge cell.

Identical with shown in the drive waveforms of Fig. 4 of reset cycle (RP), addressing period (AP) and the cycle of keeping (SP), and therefore omit its detailed description.

In driving method according to the plasma display panel device of first embodiment of the invention, in the hot environments that are higher than 40 degree, between being set to the space charge die-away time (Tdecay) that is used to produce the space charge decay put in the rise time of the anacline waveform (PR) of reset cycle (RP) beginning of a rise time point of keeping pulse (LSTSUSP) at last of (n-1) son (SFn-1) and a n SFn.

Space charge die-away time (Tdecay) is set to ratio length in room temperature environment in the hot environment that is higher than 40 degree, and is about 300 μ s ± 50 μ s.During space charge die-away time (Tdecay), the space charge that produces in the discharge keeping of (n-1) son (SFn-1) is because their mutual combination and and the mutual combination of wall electric charge and decaying.After the space charge decay, during the reset cycle (RP) of a n SFn, produce continuously and set up discharge and remove discharge, the result, reset cycle (RP) of a n SFn afterwards, each discharge cell is initialized as the optimum wall CHARGE DISTRIBUTION condition with address discharge immediately, has the little space electric charge, shown in Fig. 5 C.

During the erase cycle (EP) of space charge die-away time (Tdecay), will be used for wiping of the erasure discharge that causes at discharge cell and clean waveform (ERR) and be added to and keep electrode (Z).Wiping cleaning waveform (ERR) has from 0V to rise to the positive positive tilt waveform of keeping voltage (Vs) gradually.Wipe and clean waveform (ERR) and make and keep opening in the unit at scan electrode (Y) and keep between the electrode (Z) and producing erasure discharge of discharge, wipe the wall electric charge thus in generation.

Figure 13 is the oscillogram that has illustrated according to the driving method of the plasma display panel device of second embodiment of the invention.The drive waveforms of Figure 13 can be applicable to wherein only use previous sub the discharge of keeping at last to discharge the initialization discharge cell and set up the PDP that discharges with the removing of next son field after previous sub, in other words, the PDP that has the discharge cell of high homogeneity and wide driving allowance.

With reference to Figure 13, (n-1) son (SFn-1) comprises reset cycle (RP), addressing period (AP) and keeps the cycle (SP).A n SFn comprises the reset cycle (RP) that only has the cycle of removing and do not set up the cycle, and addressing period (AP) is kept the cycle (SP) and erase cycle (EP).

Addressing period (AP) and the cycle of keeping (SP) be identical with the drive waveforms of the embodiment of Fig. 4 and Figure 12 basically, and therefore omit its detailed description.

In driving method according to the plasma display panel device of second embodiment of the invention, under hot environment, be set to the space charge die-away time (Tdecay2) that is used to produce the space charge decay between the decline initial time point of the tilt waveform of bearing (NR) of reset cycle (RP) beginning of a rise time point of keeping pulse (LSTSUSP) at last of (n-1) son (SFn-1) and a n SFn.

Space charge die-away time (Tdecay2) with corresponding to the time of the pulse width of keeping pulse at last identical, and be set in the hot environments of 40 degree longer in than room temperature environment.Space charge die-away time (Tdecay2) is about 300 μ s ± 450 μ s at high temperature.During space charge die-away time (Tdecay2), the pulse (LSTSUSP) of keeping at last that to keep voltage (Vs) is added to scan electrode (Y) and keeps voltage (Vs), and from will keep at last time point that pulse (LSTSUSP) is added to scan electrode (Y) through the schedule time (Td) afterwards, will keep voltage (Vs) and be added to and keep electrode (Z).This voltage makes during space charge die-away time (Tdecay2), and negative space charge is gone up accumulation and positive space charge at scan electrode (Y) and gone up at addressing electrode (X) and accumulate.Therefore, at space charge die-away time (Tdecay2) afterwards, eliminate space charge, by being similar to the existing wall CHARGE DISTRIBUTION of setting up the result of discharge, in other words, be similar to each discharge cell of wall CHARGE DISTRIBUTION initialization of Fig. 5 B thus at each discharge cell.

At space charge die-away time (Tdecay2) afterwards, during the reset cycle (RP (scan electrode)) of a n SFn, negative tilt waveform (NR) is added to scan electrode (Y).During the reset cycle (RP (SD)), the positive voltage (Vs) of keeping is added to and keeps electrode (Z), and 0V is added to addressing electrode (X).Because negative tilt waveform (NR), the voltage of scan electrode (Y) is reduced to negative erasing voltage (Ve) gradually from the positive voltage (Vs) of keeping.Because negative tilt waveform (NR) produces dark discharge between scan electrode (Y) and addressing electrode (X) in the discharge cell of whole screen, and the while, at scan electrode (Y) with keep between the electrode (Z) and produce dark discharge.Result as the dark discharge in the cycle of removing (SD) changes into the optimum addressing condition that has shown in Fig. 4 C in the wall CHARGE DISTRIBUTION in each discharge cell.

Figure 14 is the oscillogram that has illustrated according to the driving method of the plasma display panel device of third embodiment of the invention, and Figure 15 A is the stepping view that the wall CHARGE DISTRIBUTION in the discharge cell that the drive waveforms by Figure 14 changes has been described to 15E.

The drive waveforms of Figure 14 will be described to the wall CHARGE DISTRIBUTION of 15E based on Figure 15 A.

With reference to Figure 14, in driving method according to plasma display panel device of the present invention, by will be at least any one son (for example, first son) be divided into the time be used for scan electrode (Y) go up to form positive wall electric charge and keep electrode (Z) go up pre-reset cycle (PREPP) of forming negative wall electric charge, be used for using the whole screen of wall CHARGE DISTRIBUTION initialization that forms by the pre-reset cycle (PREPP) discharge cell reset cycle (RP), addressing period (AP) and keep the cycle (SP), come in hot environment, to carry out driving.Erase cycle can be included in the cycle of keeping before the reset cycle of (SP) and next son field.

From during pre-reset cycle (PREPP), the positive voltage (Vs) of keeping being added to all and keeping the time point that electrode (Z) passes through the schedule time (Td2) afterwards, will have and drop to negative voltage from 0V or ground level voltage (GND) (a Y reverse caster waveform (NRY1) V1) is added to all scan electrodes (Y).The schedule time (Td2) is according to the specific change of PDP.When keeping the voltage of electrode (Z), after the voltage of scan electrode (Y) reduces, keep voltage (V1) for the schedule time.During the pre-reset cycle (PREPP), 0V is added to addressing electrode (X).

During the predetermined initial time (Td2) of pre-reset cycle (PREPP), keep keeping voltage (Vs) and be added to difference between the 0V of scan electrode (Y) and causing that the negative space charge in discharge cell goes up accumulation at scan electrode (Y) of electrode (Z) being added to, and change into the wall electric charge, and cause that the positive space charge in discharge cell accumulates on the electrode (Z) and change into the wall electric charge keeping.After wiping space charge, drop to keep electrode (Z) the Y reverse caster waveform (NRY1) keeping voltage (Vs) and be added to scan electrode (Y) in all discharge cells, scan electrode (Y) and keep between the electrode and keeping electrode (Z) and addressing electrode (X) between produce dark discharge.As the discharge result, the pre-reset cycle (PREPP) afterwards, shown in Figure 15 A, in all discharge cells, positive wall electric charge is gone up accumulation at scan electrode (Y) immediately, and negative wall electric charge is being kept accumulation more on the electrode (Z).Because the wall CHARGE DISTRIBUTION of Figure 15 A, in all discharge cells, at scan electrode (Y) with keep the positive gap voltage of formation between the electrode (Z), and in each discharge cell, form electric field to keeping electrode (Z) from scan electrode (Y).

Setting up the cycle in (SU) of reset cycle (RP), a Y anacline waveform (PRY1) and the 2nd Y anacline waveform (PRY2) are added to all scan electrodes (Y) continuously, and 0V is added to keeps electrode (Z) and addressing electrode (X).The voltage of the one Y anacline waveform (PRY1) is increased to the positive voltage of keeping voltage (Vs) and the 2nd Y anacline waveform (PRY2) from 0V and is increased to positive Y resetting voltage (Vry) from the positive voltage (Vs) of keeping.The slope of slope ratio the one Y anacline waveform (PRY1) that the 2nd Y anacline waveform (PRY2) has is low.According to the PDP characteristic, a Y anacline waveform (PRY1) and the 2nd Y anacline waveform (PRY2) can have same slope.When a Y anacline waveform (PRY1) being added in discharge cell at scan electrode (Y) and keeping the voltage of the electric field that forms between the electrode (Z), in all discharge cells at scan electrode (Y) with keep between the electrode (Z) and between scan electrode (Y) and addressing electrode (X) and produce dark discharge.As the discharge result, shown in Figure 15 B, the cycle of setting up (SU) afterwards, even in all discharge cells, negative wall electric charge is gone up accumulation while scan electrode at scan electrode (Y) and is changed into negative polarity from positive polarity, and the accumulation more on addressing electrode (X) of positive wall electric charge.Go up the number of the wall electric charge of accumulation and reduce slightly keeping electrode (Z), but keep their negative polarity, negative simultaneously wall electric charge moves towards scan electrode (Y).

By in pre-reset cycle (PREPP) wall CHARGE DISTRIBUTION afterwards, during cycle of removing (SD), produce before the dark discharge because in all discharge cells abundant big positive gap voltage, Y resetting voltage (Vr) is lower than the existing resetting voltage (Vr) of Fig. 4.When through the pre-reset cycle (PREPP) with when setting up the cycle (SU), positive wall electric charge is gone up fully accumulation at addressing electrode (X), and therefore, the absolute value of applied external voltage, just, address discharge need data voltage (Va) and scanning voltage (Vy) reduce.

The cycle of setting up (SU) afterwards, removing the cycle in (SD) of reset cycle (RP), the 2nd Y reverse caster waveform (NRY2) is added to scan electrode (Y), and simultaneously, the 2nd Z reverse caster waveform (NRZ2) is added to keeps electrode (Z).The voltage of the 2nd Y reverse caster waveform (NRY2) reduces to negative voltage (V2), the voltage of the 2nd Z reverse caster waveform (NRZ2) reduces to 0V or ground level voltage from the positive voltage (Vs) of keeping from the positive voltage (Vs) of keeping.Voltage (V2) can and the voltage of reset cycle (PRERP) (V1) identical or different.During the cycle of removing (SD), scan electrode (Y) and the voltage of keeping electrode (Z) reduce simultaneously, and therefore, do not produce discharge betwixt, yet produce dark discharge between scan electrode (Y) and addressing electrode (X).This dark discharge causes from too much wall electric charge of negative wall charge erasure and the too much wall electric charge of positive wall charge erasure from accumulating at addressing electrode (X) in scan electrode (Y) accumulation.As a result, all wall electric charges have the even wall CHARGE DISTRIBUTION shown in Figure 15 C.Because negative wall electric charge is gone up fully accumulation at scan electrode (Y) and is gone up fully accumulation with positive wall electric charge at addressing electrode (X), in the wall CHARGE DISTRIBUTION of Figure 15 C, gap voltage between scan electrode (Y) and addressing electrode (X) increases, and approximates discharge start voltage (Vf) greatly.Therefore, the wall CHARGE DISTRIBUTION of controlling all discharge cells has optimum addressing condition afterwards immediately in the cycle of removing (SD).

In addressing period (AP), (SCNP) order is added to scan electrode (Y), and simultaneously, and positive data pulse (DP) and scanning impulse are (SCNP) synchronously, and be added to addressing electrode (X) with negative scanning impulse.Scanning impulse (voltage SCNP) is scanning voltage (Vsc), its from 0V or the negative scan bias voltage (Vyb) that approximates 0V greatly drop to negative scanning voltage (Vy).During addressing period (AP), will be lower than the positive negative Z bias voltage (Vzb) of keeping voltage (Vs) and offer and keep electrode (Z).The reset cycle (RP) afterwards, all discharge cells of control in gap voltage, to have optimum addressing condition, gap voltage between scan electrode (Y) and addressing electrode (X) surpasses discharge start voltage (Vf), thus only therein opening in the unit of application scanning voltage (Vsc) and data voltage (Va) between electrode (X and Y), produce address discharge.What produce address discharge therein opens wall CHARGE DISTRIBUTION in the unit shown in Figure 15 D.After producing address discharge, shown in Figure 15 E, the wall CHARGE DISTRIBUTION in opening the unit changes, and simultaneously by address discharge, positive wall electric charge is gone up accumulation at scan electrode (Y), and negative wall electric charge is gone up accumulation at addressing electrode (X).

Therein 0V or ground level voltage are added to addressing electrode (X) or 0V or scan bias voltage (Vyb) are added in the closing unit of scan electrode (Y), gap voltage is less than discharge start voltage.Therefore, do not produce therein in the closing unit of address discharge, the wall CHARGE DISTRIBUTION is kept the state shown in Figure 15 C basically.

In the cycle of keeping (SP), the positive pulse (FIRSTSUSP, SUSP and LSTSUSP) of keeping of keeping voltage (Vs) alternately is added to scan electrode (Y) and keeps electrode (Z).During the cycle of keeping (SP), 0V or ground level voltage are provided to addressing electrode (X).The pulse (FSTSUSP) of keeping that at first is added to each scan electrode (Y) and keeps electrode (Z) is configured to have than normally keeping the wide pulse width of pulse (SUSP), makes the beginning of stable maintenance discharge.Keep pulse (LSTSUSP) at last and be added to and keep electrode (Z), and be configured to have than in the original state of the cycle of setting up (SU), normally keeping the wideer pulse width of pulse (SUSP), to go up the negative wall electric charge of fully accumulation keeping electrode (Z).The unit of being selected during the cycle of keeping (SP) by address discharge of opening is helped by the wall CHARGE DISTRIBUTION of Figure 15 E, and keeps pulse (SUSP) at scan electrode (Y) with keep between the electrode (Z) generation and keep discharge at each.Closing unit has the initial wall CHARGE DISTRIBUTION of keeping the cycle shown in Figure 15 C (SP), and therefore, keeps pulse (FIRSTSUSP, SUSP, LSTSUSP) even apply, and gap voltage does not produce discharge thus less than discharge start voltage (Vf).

Be to reduce the space charge amount that in keeping discharge, produces, will keep and extend to rising cycle of pulse (FIRSTSUSP, SUSP and LSTSUSP) and decline cycle about 340ns ± 20ns.

The drive waveforms of Figure 14 is not limited to the only first son field, and can be applicable to comprise several initial sub of first sub, and all sub-fields that may be used on comprising in the frame period.

Figure 16 has illustrated in according to the driving method of third embodiment of the invention the drive waveforms during the keeping the cycle of (n-1) son (SFn-1) and n field SFn (n is the positive integer greater than 2) (SP).Figure 17 has illustrated after the cycle of keeping the wall CHARGE DISTRIBUTION that the drive waveforms by Figure 16 forms in discharge cell, and Figure 18 had illustrated before the cycle of setting up wall CHARGE DISTRIBUTION and gap voltage in the discharge cell that the drive waveforms by Figure 14 and 16 forms.

The drive waveforms of Figure 16 will be described based on the wall CHARGE DISTRIBUTION of Figure 17 and 18.

With reference to Figure 16, at n field SFn, use, for example all unit of the wall CHARGE DISTRIBUTION initialization PDP that forms after the cycle of keeping of the first son field at (n-1) son (SFn-1).

Each of (n-1) son (SFn-1) and a n SFn comprises and is used for going up the reset cycle (RP) of all unit of help initialization of the wall CHARGE DISTRIBUTION of fully accumulating by negative wall electric charge wherein keeping electrode (Z), the keeping the cycle of discharge (SP) that is used for the addressing period (AP) of selected cell and is used to keep selected unit.

Keeping in the cycle of (n-1) son (SFn-1), will keep pulse (LSTSUSP3) at last and be added to and keep electrode (Z).0V or ground level voltage are added to scan electrode (Y) and addressing electrode (X).Equal space charge is changed into the time that the wall electric charge needs the space charge die-away time (Tdecay3) corresponding to the pulse width of keeping pulse (LSTSUSP3) at last, keep discharge in opening the unit, to cause, and wipe space charge in discharge cell before in the reset cycle (RP) of a n SFn.Keep keeping voltage (Vs) time space charge decay time (Tdecay3) and be set to about 300 μ s ± 50 μ s when keeping pulse (LSTSUSP3) at last.

Because by keeping pulse (LSTSUSP3) at last at scan electrode (Y) with keep between the electrode (Z) discharge that produces, positive wall electric charge is gone up fully accumulation at scan electrode (Y), and negative wall electric charge has the little space electric charge, as shown in figure 17 keeping upward fully accumulation of electrode (Z).

Setting up the cycle in (SU) of a n SFn, use the wall CHARGE DISTRIBUTION of Figure 17 in all unit, to produce dark discharge, and all unit of initialization are to have the wall CHARGE DISTRIBUTION shown in Figure 15 B.Setting up the cycle (SU) ensuingly removes initialization, addressing and keeps operation identical with the drive waveforms of Figure 15 basically with it.

In plasma display panel device and driving method thereof according to third embodiment of the invention, in hot environment, space charge is changed into the wall electric charge, stabilizing walls CHARGE DISTRIBUTION in the initialization hot environment thus, and keeping after the discharge at last of the cycle of setting up of next height field direct son formerly field, and be not used in the erase cycle of wiping the wall electric charge between the reset cycle of formerly sub cycle of keeping and next son field.Keeping discharge is strong glow discharge (glowdischarge), and therefore, the wall electric charge of q.s is at scan electrode (Y) and keep electrode (Z) and go up accumulation, and maintains the polarity of the positive wall electric charge on the scan electrode and in the polarity of keeping the negative wall electric charge on the electrode (Z).

Figure 18 has illustrated the gap voltage of keeping the unit that discharge or the discharge of pre-reset cycle (PREPP) form by last.

With reference to Figure 18, because keep pulse (LSTSUSP) or the waveform (NRY1, PRZ and NRZ1) of pre-reset cycle (PREPP) at last, at scan electrode (Y) with keep between the electrode (Z) and to produce discharge, thus from the cycle of setting up (SU) before, directly from scan electrode (Y) to the electric field of keeping electrode (Z), form primary clearance voltage (Vgini-yz) Y-Z, and in the unit from scan electrode (Y) to addressing electrode (X) primary clearance voltage (Vgini-yx) formation Y-X.

In discharge cell, primary clearance voltage (Vgini-yx) is formed by the wall CHARGE DISTRIBUTION of Figure 18 before in the cycle of setting up (SU) between Y-X, and therefore, when applying the external voltage that equals the difference between the primary clearance voltage (Vgini-yx) between discharge start voltage (Vf) and Y-X, during the cycle of setting up (SU), in the unit, produce dark discharge.This is below with equation 5 expressions.

[equation 5]

Vyz≥Vf-(Vgini-yz)

" Vyz " be the external voltage that during the cycle of setting up (SU), is added to scan electrode (Y) and keeps electrode (Z) (hereinafter, be called " external voltage between Y-Z "), and be illustrated in the voltage that is added to the positive tilt waveform (PRY1 and PRY2) of scan electrode (Y) in the drive waveforms of Figure 14 and 16, and expression is added to the 0V that keeps electrode (Z).

Figure 19 illustrated when driving Plasmia indicating panel by the drive waveforms of Figure 14 and 16, in the cycle of setting up at scan electrode with keep the external voltage that applies between the electrode and the variation of the gap voltage in discharge cell.

As equation 5 and shown in Figure 19, when external voltage (Vyz) is increased to greater than the difference between the primary clearance voltage (Vgini-yx) between discharge start voltage (Vf) and Y-X between Y-Z during the cycle of foundation (SU), because the stable generation dark discharge in discharge cell of wide driving allowance.

In plasma display panel device according to third embodiment of the invention, the radiation that the radiation number that produces produced in the reset cycle in prior art in reset cycle of each son.Because the radiation number that produces in the unit during the reset cycle of each son field is little, and special, the number of surface-discharge is less than the number of surface-discharge in the prior art, and this exit dose is little.

Table 2 is first sub pre-reset cycle (PREPP) and the middle electric discharge type that produces of reset cycle (RP) and arrangements of number of describing in the drive waveforms of Figure 14.

Table 3 is the electric discharge type that produces in the reset cycle (RP) of each residue son that does not have the pre-reset cycle (PREPP) of describing in the drive waveforms of Figure 16 and the arrangement of number.

Table 2

Table 3

Shown in the chart 2, in first sub the drive waveforms of Figure 14, during pre-reset cycle (PREPP) and reset cycle (RP), produce maximum three discharge and two surface-discharges on the contrary.In ensuing son field, as shown in table 3, during the reset cycle (RP), produce maximum opposite discharges and two surface-discharges, and in the closing unit of closing in formerly sub, only produce a discharge on the contrary.Because the difference in discharge number and electric discharge type, when wherein being divided into 12 sons by with a frame period time and driving the plasma display panel device of the third embodiment of the present invention, black screen brightness is reduced to less than 1/3rd.Therefore, plasma display panel device of the present invention can use the darkroom contrast value less than the darkroom contrast value of prior art to show black screen, and therefore, can more clearly illustrate image.

The fewer purpose discharge that produces in the reset cycle (RP) means at discharge cell mesospore electric charge or polarity and almost remains unchanged.

Figure 20 has illustrated the reversing of keeping the wall electric charge on the electrode by the existing exemplary driver waveform of Fig. 4 in erase cycle with during the reset cycle.

Figure 21 has illustrated that the drive waveforms by Figure 14 and 16 changes at the wall charge polarity of keeping during the reset cycle on the electrode.

In existing plasma display panel device, as shown in figure 20, from keeping at last after the discharge after the dark discharge of removing the cycle (SD) of n field SFn of (n-1) son (SFn-1), the polarity of keeping the wall electric charge on the electrode (Z) with positive polarity, wipe and negative polarity (Fig. 5 A), the order of positive polarity (Fig. 5 B) and negative polarity (Fig. 5 C) changes.Compare, in plasma display panel device of the present invention, as shown in figure 21, after discharging, keeping at last of (n-1) son (SFn-1) after the dark discharge of removing the cycle (SD) of a n SFn, keep negative polarity at the wall electric charge of keeping on the electrode (Z).In other words, in plasma display panel device of the present invention, shown in Figure 15 A, 15B and 15C, in initialization procedure, through addressing period (AP) time, in the constant maintenance negative polarity of keeping on the electrode (Z) of wall electric charge.

Figure 22 has illustrated in the drive waveforms according to the first sub-field duration in the driving method of the plasma display panel device of fourth embodiment of the invention.Figure 23 has illustrated the drive waveforms during the keeping the cycle of in according to the driving method of the plasma display panel device of fourth embodiment of the invention (n-1) son (SFn-1) and n field SFn (n is the positive integer greater than 2) (SP).

With reference to Figure 22 and 23, in driving method according to plasma display panel device of the present invention, to be added to scan electrode (Y) from the voltage that 0V or ground level voltage (GND) reduce removing the cycle during (SD) of each son, make in the wall CHARGE DISTRIBUTION of the cycle of setting up (SU) initialized all discharge cells even thus.

First son comprises pre-reset cycle (PREPP), reset cycle (RP), addressing period (AP) and keeps the cycle (SP), and as shown in figure 22, and other son comprises the reset cycle (RP), addressing period (AP) and keep the cycle (SP), as shown in figure 23.

In the pre-reset cycle (PREPP) of the first son field, space charge is changed into the wall electric charge, wipe space charge thus, and also in the wall CHARGE DISTRIBUTION that forms in each discharge cell shown in Figure 15 A, the positive voltage (Vs) of keeping is added to all and keeps electrode (Z), and, will have and be reduced to negative voltage from 0V or ground level voltage (GND) (a Y reverse caster waveform (NRY1) of voltage V1) is added to all scan electrodes (Y) afterwards from time point through the schedule time (Td2).

Except reset cycle (RP) of n of first son was added to the last scanning impulse (LSTSUSP3) of keeping electrode (Z) before keeps the positive voltage (Vs) of keeping during the space charge die-away time (Tdecay3) of about 300 μ s ± 50 μ s.During space charge die-away time (Tdecay3), space charge is changed into the wall electric charge and is wiped free of afterwards.

Each son (SFn-1, SFn) in, removing the cycle in (SD) of reset cycle (RP), the 2nd Y reverse caster waveform (NRY2) is added to scan electrode (Y), and the 2nd Z reverse caster waveform (NRZ2) is added to keeps electrode (Z) simultaneously.Unlike the foregoing description, the voltage of the 2nd Y reverse caster waveform (NRY2) is reduced to negative voltage (V2) gradually from 0V or ground level voltage (GND).The voltage of the 2nd Z reverse caster waveform (NRZ2) is reduced to 0V or ground level voltage gradually from the positive voltage (Vs) of keeping.During the cycle of removing (SD), scan electrode (Y) and the voltage of keeping electrode (Z) reduce simultaneously, and therefore, do not produce discharge therebetween, yet produce dark discharge between scan electrode (Y) and addressing electrode (X).This dark discharge is wiped at scan electrode (Y) and is gone up too much wall electric charge in the negative wall electric charge of accumulating, and wipes at addressing electrode (X) and go up too much wall electric charge in the positive wall electric charge of accumulating.Also can omit the 2nd Z reverse caster waveform (NRZ2).

If the voltage of the 2nd Y reverse caster waveform (NRY2) reduces from 0V or ground level voltage, remove the cycle (SD) remove the cycle (SD) less than the foregoing description.Though, the voltage of the 2nd Y reverse caster waveform (NRY2) reduces from 0V or ground level voltage, because at scan electrode (Y) with keep little difference between the electrode (Z), can effectively be suppressed at scan electrode (Y) and keep discharge between the electrode (Z) according to the plasma display panel device of fourth embodiment of the invention, and stablize initialization simultaneously.Therefore, in this embodiment,, guarantee driving time more and remove the cycle initialization operation of (SD) more stable because remove the cycle reducing of (SD).

For reducing the space charge number in keeping discharge, produce, each is kept extending to rising cycle of pulse (FIRSTSUSP, SUSP and LSTSUSP) and decline cycle about 340ns ± 20ns.

Figure 24 is the oscillogram that has illustrated according to drive waveforms in the driving method of the plasma display panel device of fifth embodiment of the invention, and it has illustrated the drive waveforms of using in hot environment.

With reference to Figure 24, in the driving method of plasma display panel device of the present invention, during n-1 final cycle, to have the pulse (LSTSUSP) of keeping at last of keeping about 300 μ s ± 50 μ s during space charge die-away time (Tdecay3) is added to and keeps electrode (Z), and afterwards, 0V or ground level voltage (GND) are added to keep electrode (Z).

In the driving method of plasma display panel device of the present invention, the positive voltage (Vs) of keeping is added to all scan electrodes once more, and afterwards, from time point, will have and drop to negative voltage from 0V or ground level voltage (GND) (a Y reverse caster waveform (NRY1) of voltage V1) is added to all scan electrodes through the schedule time (Td2).Therefore, keep when equaling to keep voltage (Vs), a Y reverse caster waveform (NRY1) is added to scan electrode (Y) when the voltage of keeping electrode (Z).Therefore, in the driving method of plasma display panel device of the present invention, 0V or ground level voltage (GND) are being added to scan electrode (Y) afterwards, will having from keeping a Z reverse caster waveform (NRZ1) that voltage (Vs) is reduced to the voltage of 0V or ground level voltage (GND) gradually and be added to and keep electrode (Z).

Because a series of drive waveforms, the space charge that produces under hot environment was almost wiped before a n SFn fully, and changed into the wall electric charge, and with each discharge cell of wall CHARGE DISTRIBUTION initialization of Figure 15 A.

Figure 25 is the oscillogram that has illustrated according to the drive waveforms of the driving method of the plasma display panel device of sixth embodiment of the invention.

As shown in figure 25, in drive waveforms according to the driving method of plasma display panel device, in the addressing period of a son field, the application time point that is added to the data pulse of all addressing electrodes (X1 is to Xn) is different from the application time point of the scanning impulse that is added to scan electrode.The space charge of length minimizing in discharge cell in cycle kept in control.

When the length in cycle is kept in control, need control from applying the last pulse SUSL that keeps) time point to cycle of the reset cycle of next son field.For example, suppose that will keep the time point that pulse (SUSL) is added to scan electrode (Y) or keeps electrode (Z) in the cycle at last keeping of first son is " t0 ", and from time point " t1 ", the controlled cycle of keeping is cycle " t0-t1 " in the second son field of reset cycle after the first son field.

Keep the burst length at last and put the cycle of the reset cycle of next height field and realize from during cycle of keeping, providing by control keeping the control of Cycle Length.In other words, control is kept the burst length at last and is put cycle of the reset cycle of next height field from providing, and controls the whole length of keeping the cycle thus.

Preferably, in the cycle of keeping, from finish to provide the time point of keeping pulse (SUSL) at last to the periodic regime of the reset cycle of next height field from 100 μ s to 1ms.The termination of keeping pulse (SUSL) at last means that the voltage of keeping pulse (SUSL) at last is less than about 10% of maximum voltage.In other words, suppose that the maximum voltage of keeping pulse (SUSL) at last is 200V,, think to stop providing keeping pulse (SUSL) at last when the voltage of last scanning impulse (SUSL) during less than about 20V.

Preferably, in during the cycle of keeping, as shown in figure 25, from stop providing the time point of keeping pulse at last to the cycle of the reset cycle of next height field be that the last scanning impulse (SUSL) of keeping pulse that applies during cycle of keeping drops to ground level (GND) afterwards from keeping voltage (Vs), be used to keep the cycle (W1) of ground level voltage (GND).

Like this, control from during cycle of keeping, stop providing the time point of keeping pulse (SUSL) at last to cycle of the reset cycle of next height field at 100 μ s in the scope of 1ms, reduce the space charge in discharge cell thus, this space charge is to produce high temperature, for example, the principal element that is higher than the erroneous discharge that the temperature of Plasmia indicating panel of the temperature of 40 degree causes.

If be provided with from stopping providing the time point of keeping pulse (SUSL) at last cycle long enough, providing last scanning impulse (SUSL) to guarantee the enough time of minimizing space charge afterwards to the reset cycle of next height field.Therefore, the space charge in discharge cell reduces.

As mentioned above, space charge in discharge cell and the wall electric charge that is positioned on the predetermined electrode that the discharge cell number reduces reconfigure, and reduce the number of the wall electric charge that participates in discharge thus.As a result, the space charge amount in discharge cell reduces, and reduces the high temperature erroneous discharge that the temperature of panel area face to face produces when high thus.

From finishing to provide the time point of keeping pulse (SUSL) at last to cycle of the reset cycle of next height field reason greater than 100 μ s, just, to be set to the reason of 100 μ s be fully to reduce space charge for guaranteeing keeping in the discharge of Plasmia indicating panel to lower limit.From finishing to provide the time point of keeping pulse (SUSL) at last to cycle of the reset cycle of next height field reason less than 1ms, just, to be set to the reason of 1ms be for guaranteeing to keep the work allowance in cycle keeping in the driving of Plasmia indicating panel to higher limit.

In Figure 25, the length that the cycle is kept in control makes control from finishing to provide the time point of keeping pulse (SUSL) the at last cycle to the reset cycle of next height field, still can also control the whole length of keeping the cycle by the cycle that provides that pulse is kept in control.This will describe with reference to Figure 26 below.

Figure 26 is the oscillogram that has illustrated according to another drive waveforms of the driving method of the plasma display panel device of sixth embodiment of the invention.

With reference to Figure 26, control is used for being provided for producing the pulse of keeping of keeping discharge at last in the cycle of keeping, just keep the cycle of pulse at last, control the whole length of keeping the cycle thus, just, from the cycle of keeping, provide the length of the time point of last scanning impulse to the cycle of the reset cycle of next son field.

Preferably, consideration will be kept voltage (Vs) and alternately be added to scan electrode or keep electrode in the cycle of keeping, being used for producing the cycle that provides of keeping pulse of keeping discharge at last in the cycle of keeping is to keep keeping at last the cycle that voltage (Vs) kept in pulse (SUSL) of applying in the cycle for it.In the cycle of keeping, preferably controlling the cycle that provides of keeping pulse (SUSL) at last is that 1 μ s is to 1ms.

Being used for producing the cycle that provides of keeping pulse (SUSL) at last of keeping discharge at last is set to reason greater than 1 μ s in the cycle of keeping, just, to be set to the reason of 1 μ s be the discharge of keeping that produces required amplitude in the discharge of keeping that is at Plasmia indicating panel to lower limit.Being used for producing the cycle that provides of keeping pulse (SUSL) at last of keeping discharge at last is set to reason less than 1ms in the cycle of keeping, just, the reason that higher limit is set to 1ms is space charge and the while that produces in keeping discharge for fully reducing, and guarantees the work allowance of keeping the cycle of keeping in the driving at Plasmia indicating panel.

In the present invention, the son that is used for controlling the length in the cycle of keeping is optional at a frame.For example, in drive waveforms according to the driving method of plasma display panel device of the present invention, consideration is by wherein at reset cycle, addressing period with keep in the cycle combination presentation video of a plurality of sons of predetermined voltage being added to addressing electrode, scan electrode and keeping electrode, when selecting wherein control to keep the son field of Cycle Length, all sub that selects a frame to prevent the high temperature erroneous discharge more effectively.In other words, a frame all the son keep in the cycle, control keep the cycle.

Wherein being added to the scanning impulse of scan electrode (Y) and application time point different situation in addressing period of the data pulse that is added to addressing electrode (X) will be described below.

Can change in many ways and in addressing period, be used for the method that the feasible application time point that is added to the scanning impulse of scan electrode (Y) is different from the application time point of the data pulse that is added to addressing electrode (X1 is to Xn).There is the method that is used in the time point application data bursts that is different from the application time point that wherein scanning impulse is added to each addressing electrode (X1 is to Xn).To 27E this method is described below with reference to Figure 27 A.

Figure 27 A has illustrated in based on the drive waveforms according to the driving method of plasma display panel device of the present invention to 27E, at the application time point of the application time point that is different from scanning impulse, data pulse has been added to the example of each addressing electrode (X1 is to Xn).

With reference to figure 27A to 27E, in drive waveforms of the present invention, be provided with in the application time point diverse ways of scanning impulse and data pulse, in the addressing period of a son field, the application time point that is added to the data pulse of addressing electrode (X1 is to Xn) is different from the application time point of the scanning impulse that is added to scan electrode (Y) respectively.For example, shown in Figure 27 A, in drive waveforms according to driving method of the present invention, the application time point of supposing the scanning impulse that is added to scan electrode (Y) is " ts ", at time point than the Zao 2 Δ t of time point that scanning impulse are added to scan electrode (Y), just, time point " ts-2 Δ t " is added to addressing electrode (X1) with data pulse, to adapt to the order that is provided with of addressing electrode (X1 is to Xn).At the time point than the Zao Δ t of time point that scanning impulse is added to scan electrode (Y), just, " ts-Δ t " is added to addressing electrode (X2) with data pulse at time point.By this method, " ts-Δ t " is added to electrode (Xn-1) with data pulse at time point, and at time point " ts-2 Δ t " data pulse is added to electrode (Xn).In other words, shown in Figure 27 A, data pulse is added to addressing electrode (X1 is to Xn) be added to the application time point of scan electrode (Y) at scanning impulse before or after.Unlike Figure 27 A, the application time point that is added to the data pulse of addressing electrode (X1 is to Xn) is set to be different from the application time point of the scanning impulse that is added to scan electrode (Y), and the feasible application time point that is added to the data pulse of at least one addressing electrode (X1 is to Xn) can be set to more late than the application time point of scanning impulse.To this drive waveforms be described with reference to figure 27B.

With reference to figure 27B, unlike Figure 27 A, in drive waveforms of the present invention, the application time point that is added to the data pulse of addressing electrode (X1 is to Xn) is different from the application time point of the scanning impulse that is added to scan electrode (Y), and the application time point of all data pulses is more late than the application time point of above-mentioned scanning impulse.In Figure 27 B, the application time point of all data pulses is more late than the application time point of scanning impulse, but only the application time point of a data pulse is set to more lately than the application time point of scanning impulse, and the number of the data pulse that applies after the application time point of scanning impulse can change.For example, shown in Figure 27 B, in drive waveforms according to driving method of the present invention, the application time point of supposing the scanning impulse that is added to scan electrode (Y) is " ts ", at time point than the late Δ t of time point that scanning impulse is added to scan electrode (Y), in other words, time point " ts+ Δ t " is added to addressing electrode (X1) with data pulse, to adapt to the order that is provided with of addressing electrode (X1 is to Xn).At the time point than the late 2 Δ t of time point that scanning impulse are added to scan electrode (Y), in other words, " ts+2 Δ t " is added to addressing electrode (X2) with data pulse at time point.In the method, " ts+3 Δ t " is added to electrode (X3) with data pulse at time point, and at time point " ts+n Δ t " data pulse is added to electrode (Xn).In other words, shown in Figure 27 B, after scanning impulse is added to the application time point of scan electrode (Y), data pulse is added to addressing electrode (X1 is to Xn).Produce in the drive waveforms of Figure 27 B in the description in the zone " A " of discharging with reference to figure 27C therein, for example, suppose that the address discharge trigger voltage is 170V, in zone " A ", scanning impulse has the voltage of 100V, and data pulse has the voltage of 70V.At first, voltage difference between scan electrode (Y) and addressing electrode (X1) becomes 100V by the scanning impulse that is added to scan electrode (Y), and the voltage difference between scan electrode (Y) and addressing electrode (X1) is elevated to 170V by the data pulse that is added to addressing electrode (X1) afterwards the elapsed time " Δ t " after the application scanning pulse.Therefore, the voltage difference between scan electrode (Y) and addressing electrode (X1) becomes the address discharge trigger voltage, produces address discharge thus between scan electrode (Y) and addressing electrode (X1 is to Xn).Unlike Figure 27 B, the application time point that is added to the data pulse of addressing electrode (X1 is to Xn) is set to be different from the application time point of the scanning impulse that is added to scan electrode (Y), and the application time point that makes it possible to be provided with data pulse is more Zao than the application time point of scanning impulse.To this drive waveforms be described with reference to figure 27D.

With reference to figure 27D, unlike Figure 27 A or Figure 27 B, in drive waveforms of the present invention, the application time point that is added to the data pulse of addressing electrode (X1 is to Xn) is different from the application time point of the scanning impulse that is added to scan electrode (Y), and as mentioned above, the application time point of the application time ratio scanning impulse of data pulse early.In Figure 27 D, the application time point of all data pulses is more Zao than the application time point of scanning impulse, but as mentioned above, only the application time point of a data pulse is set to more early than the application time point of scanning impulse, and the number of the data pulse that applied before the application time point of scanning impulse can change.For example, shown in Figure 27 D, in drive waveforms according to driving method of the present invention, the application time point of supposing the scanning impulse that is added to scan electrode (Y) is " ts ", at time point than the Zao Δ t of time point that scanning impulse is added to scan electrode (Y), just, time point " ts-Δ t " is added to addressing electrode (X1) with data pulse, to adapt to putting in order of addressing electrode (X1 being to Xn).Than the time point that scanning impulse is added to the Zao 2 Δ t of scan electrode (Y), just, time point " ts-2 Δ t " is added to addressing electrode (X2) with data pulse.In the method, " ts-3 Δ t " is added to electrode (X3) with data pulse at time point, and time point " ts-n Δ t " is added to electrode (Xn) with data pulse.In other words, shown in Figure 27 D, before the application time point of the scanning impulse that is added to scan electrode (Y), data pulse is added to addressing electrode (X1 is to Xn).In the drive waveforms of Figure 27 D, produce in the description in the zone " B " of discharging with reference to figure 27E therein, for example, suppose that the address discharge trigger voltage is 170V shown in Figure 27 C, in zone " B ", scanning impulse has the voltage of 100V, and data pulse voltage is 70V.At first, because being added to the voltage difference of data pulse between scan electrode (Y) and addressing electrode (X1) of addressing electrode (X1) is 70V, and the voltage difference between scan electrode (Y) and addressing electrode (X1 is to Xn) is elevated to 170V because of the scanning impulse that is added to scan electrode (Y) afterwards the elapsed time " Δ t " after the application data bursts.Therefore, the voltage difference between scan electrode (Y) and addressing electrode (X1) becomes the address discharge trigger voltage, produces address discharge thus between scan electrode (Y) and addressing electrode (X1).

, in 27E, be described in the application time point of the scanning impulse that is added to scan electrode (Y) and be added to difference or the difference between the application time point of the data pulse that is added to addressing electrode (X1 is to Xn) between the application time point of data pulse of addressing electrode (X1 is to Xn) at Figure 27 A with reference to Δ t.When describing Δ t, for example, the application time point that is added to the scanning impulse of scan electrode (Y) is " Δ t ", difference between the application time point of the data pulse of the application time point (ts) of scanning impulse and the most approaching application time point (ts) is " Δ t ", and the difference between the application time point of the data pulse of the application time point (ts) of scanning impulse and next the most approaching application time point (ts) is the twice of Δ t, in other words, 2 Δ t.Δ t is constant.In other words, the application time point that is added to the scanning impulse of scan electrode (Y) is different from the application time point of the data pulse that is added to addressing electrode (X1 is to Xn) respectively, and the difference between the application time point of the data pulse that is added to addressing electrode (X1 is to Xn) is mutually the same respectively.In a son field, difference between the application time point of the data pulse that is added to addressing electrode (X1 is to Xn) is mutually the same respectively, and makes at the application time point of scanning impulse and be same to each other or different to each other near the difference between the application time point of the data pulse of the application time point of scanning impulse.For example, if in a son field, make the difference between the application time point of the data pulse be added to addressing electrode (X1 is to Xn) distinguish mutually the same, and in any one addressing period, the difference between the data pulse of the application time point (ts) of scanning impulse and the most approaching application time point (ts) is " Δ t ".In other addressing period of identical son, the difference between the application time point of the data pulse of the application time point (ts) of scanning impulse and the most approaching application time point (ts) is " 2 Δ t ".Consider the finite time of addressing period, the difference between the application time point of the data pulse of the application time point (ts) of scanning impulse and the most approaching application time point (ts) is greater than 10ns, and preferably is set to less than 1000ns.Consider to depend on that any one the scanning impulse width that drives Plasmia indicating panel, " Δ t " preferably are set to have the scope of predetermined scanning impulse width to the predetermined scanning impulse width of one of percentage.For example, the width of supposing a scanning impulse is 1 μ s, has one of percentage of 1 μ s (in other words, 10ns) to one 1 μ s (scope 1000ns) in other words, in the difference of using between the time point.

The application time point of scanning impulse and the application time point of data pulse differ from one another, and the difference between the application time point of data pulse also can differ from one another respectively.In other words, the application time point that is added to the data pulse of addressing electrode (X1 is to Xn) is different from the application time point of the scanning impulse that is added to scan electrode (Y), and the application time point that is added to the data pulse of addressing electrode (X1 is to Xn) differs from one another respectively.For example, the application time point of supposing the scanning impulse that is added to scan electrode (Y) is " ts ", and the difference between the application time point of the data pulse of the application time point (ts) of scanning impulse and the most approaching application time point (ts) is " Δ t ", and the difference between the application time point of the data pulse of the application time point (ts) of scanning impulse and next the most approaching application time point (ts) is " 3 Δ t ".For example, be 0ns if be added to the application time point of the scanning impulse of scan electrode (Y), at time point 10ns data pulse is added to addressing electrode (X1).Therefore, be 10ns at the application time point of the scanning impulse that is added to scan electrode (Y) and the difference that is added between the application time point of data pulse of addressing electrode (X1).At time point 20ns data pulse is added to next addressing electrode (X2), make that at the application time point of the scanning impulse that is added to scan electrode (Y) and the difference that is added between the application time point of data pulse of addressing electrode (X2) be 20ns, and be 10ns therefore, at application time point that is added to addressing electrode (X1) and data pulse and the difference that is added between the application time point of data pulse of addressing electrode (X2).At time point 40n data pulse is added to next addressing electrode (X3), make that at application time point that is added to addressing electrode (X1) and data pulse and the difference that is added between the application time point of data pulse of addressing electrode (X3) be 40ns, and be 20ns therefore, at application time point that is added to addressing electrode (X2) and data pulse and the difference that is added between the application time point of data pulse of addressing electrode (X3).In other words, the application time point that is added to the scanning impulse of scan electrode (Y) differs from one another with the application time point that is added to the data pulse of addressing electrode (X1 is to Xn), and the difference between the application time point of the data pulse that is added to addressing electrode (X1 is to Xn) also can differ from one another respectively.

At the application time point of the scanning impulse that is added to scan electrode (Y) be added to difference (Δ t) between the application time point of data pulse of addressing electrode (X1 is to Xn), and preferably be set to less than 1000ns greater than 10ns.Consideration preferably is provided with " Δ t " and has the scope of one of percentage to a predetermined scanning impulse width according to the scanning impulse width that drives Plasmia indicating panel.

In addressing period, the application time point that is added to the scanning impulse of scan electrode (Y) is different from the application time point of the data pulse that is added to addressing electrode (X1 is to Xn), reduce coupling thus, and reduce the wave noise that is added to scan electrode and keeps electrode at the panel capacitance of each the application time point that data pulse is added to addressing electrode (X1 is to Xn).Below with reference to Figure 28 A and 28B this noise minimizing is described.

Figure 28 A and 28B have illustrated the noise that is reduced by drive waveforms according to the present invention.

With reference to figure 28A, be added to scan electrode and compare Figure 10 with the noise of the waveform of keeping electrode and significantly reduce.This noise illustrates in greater detail in Figure 28.The reason that noise reduces is, the identical time point of application time point that is added to scan electrode (Y) at scanning impulse is not added to data pulse all addressing electrodes (X1 is to Xn), at the application time point that is different from scanning impulse data pulse is added to each addressing electrode (X1 is to Xn), make the coupling that reduces panel capacitance at each time point, suddenly the time point that rises in data pulse reduces from being added to scan electrode and keeping the rising noise of the waveform generation of electrode thus, and reduces from being added to scan electrode and keeping the decline noise of the waveform generation of electrode at the time point that data pulse descends suddenly.Therefore, be stabilized in the address discharge that addressing period produces, prevent to reduce the driving stability of Plasmia indicating panel thus.

As a result, the address discharge of stabilized plasma display panel makes thus and can adopt the single scanning method that wherein scans whole front panel with a driver.

When the pre-reset cycle is included between the cycle of keeping and reset cycle, data pulse is added to all addressing electrodes (X1 is to Xn) being different from the time point that scanning impulse is added to the application time point of scan electrode.But, can with at least two of addressing electrode (X1 is to Xn) use to the identical application time point of the time point of n-1 addressing electrode the data pulse that is added to addressing electrode (X1 is to Xn) at least any one.This method is identical with driving method according to the plasma display panel device of second embodiment of the invention.

Figure 29 has illustrated the addressing electrode (X1 is to Xn) that is grouped into four address electrodes of address electrode group, to be described in according to another drive waveforms in the driving method of the plasma display panel device of seventh embodiment of the invention.

In driving method, only illustrate and described the scanning impulse that wherein is added to scan electrode (Y) and be added to the situation that the application time point of the data pulse of addressing electrode (X) differs from one another in addressing period according to the plasma display panel device of seventh embodiment of the invention.But, identical with according to sixth embodiment of the invention basically according to the driving method of seventh embodiment of the invention, and as the 6th embodiment, even in the 7th embodiment, control is kept the length in cycle to reduce the space charge in the discharge cell in the cycle of keeping.Identical with the 6th embodiment basically according to the control in cycle of keeping of the 7th embodiment, and therefore, the descriptions thereof are omitted.And, the explanation of omitting Fig. 7.

In driving method according to the plasma display panel device of seventh embodiment of the invention, as shown in figure 29, the addressing electrode of Plasmia indicating panel 500 (X1 is to Xn) is grouped into, for example, Xa electrode group (Xa1 is to Xa (n)/4) 501, Xb electrode group (Xb{ (n/4)+1} is to Xb (2n)/4) 502, Xc electrode group (Xc{ (2n/4)+1} is to Xc (3n)/4) 503, with Xd electrode group (Xd{3n/4}+1) to Xd (n)) 504, and data pulse is added to any one of address electrodes of address electrode group of grouping at the time point of the application time point that is different from the scanning impulse that is added to scan electrode (Y).In other words, data pulse is added to all electrodes (Xa1 is to Xa (n)/4) that belong to Xa electrode group 501 at the time point of the application time point that is different from the scanning impulse that is added to scan electrode (Y), and it is all identical to be added to the application time point of data pulse of the electrode (Xa1 is to Xa (n)/4) that belongs to Xa electrode group 501.At the application time point of the application time point that is different from the data pulse that is added to the electrode (Xa1 is to Xa (n)/4) that belongs to Xa electrode group 501 data pulse is added to the electrode that belongs to other electrode group 502,503 of residue and 504, and belong to the application time point of data pulse of the electrode of other address electrodes of address electrode group 502,503 and 504 can be identical or different with the application time point of the scanning impulse that is added to scan electrode (Y).

In Figure 29, the number of the addressing electrode that comprises in each addressing electrode 501,502,503 and 504 is identical, but the number of the addressing electrode that comprises in each address electrodes of address electrode group 501,502,503 and 504 can be set to differ from one another.In addition, the number of may command address electrodes of address electrode group.The number that address electrodes of address electrode group can be set has at least two scopes to maximum sum of addressing electrode, just, and 2≤N≤(n-1).

In Figure 25 and address electrodes of address electrode group as shown in figure 29 be associated, the addressing electrode of Plasmia indicating panel (X1 is to Xn) is grouped into a plurality of address electrodes of address electrode group, and address electrodes of address electrode group comprises addressing electrode respectively singly.

The application time point of the data pulse that is added to the Plasmia indicating panel that wherein addressing electrode is grouped into four address electrodes of address electrode group is described to 30C below with reference to Figure 30 A.

Figure 30 A illustrated in the drive waveforms according to the driving method of the plasma display panel device of seventh embodiment of the invention to 30C, addressing electrode (X1 is to Xn) is grouped into four electrode groups and at the application time point application data bursts of the application time point that the is different from scanning impulse example to each electrode group.

As Figure 30 A to shown in the 30C, in drive waveforms according to the present invention, a plurality of addressing electrodes (X1 is to Xn) are grouped into a plurality of address electrodes of address electrode group (Xa, Xb, Xc and Xd), as shown in figure 29, and in the addressing period of son, at least one the application time point of data pulse of addressing electrode (X1 is to Xn) that is added to a plurality of address electrodes of address electrode group is different from the application time point of the scanning impulse that is added to scan electrode (Y).Though do not have shown in the drawingsly, in the driving method of plasma display panel device of the present invention, the length that the cycle is kept in control is to reduce the space charge number in the discharge cell.

The length in cycle is kept in control, prevents thus as the above-mentioned high temperature erroneous discharge of above-mentioned generation.

The application time point that is added to the scanning impulse of scan electrode (Y) differs from one another with the application time point that is added to the data pulse of addressing electrode (X1 is to Xn), prevents the instability of address discharge thus and prevents to reduce driving stability.Therefore, increase driving efficient.For example, shown in Figure 30 A, the application time point of supposing the scanning impulse that is added to scan electrode (Y) is " ts ", than the time point that scanning impulse is added to the Zao 2 Δ t of scan electrode (Y), just, time point " ts-2 Δ t " is added to addressing electrode (Xa1 is to Xa (n)/4) with data pulse, to adapt to the order that is provided with of the address electrodes of address electrode group that comprises addressing electrode (X1 is to Xn).Than the time point that scanning impulse is added to the Zao Δ t of scan electrode (Y), just, time point " ts-Δ t " is added to data pulse the addressing electrode (Xb{ (n/4)+1} is to Xb (2n)/4) that comprises in electrode group (Xb).In the method, data pulse is added to the addressing electrode (Xc{ (2n/4)+1} is to Xc (3n)/4) 503 that is included in the electrode group (Xc) at time point " ts+ Δ t ", and data pulse is added to the addressing electrode (Xd{3n/4}+1) that in electrode group (Xd), comprises to Xd (n) at time point " ts+2 Δ t ".In other words, shown in Figure 30 A, before or after the application time point of the scanning impulse that is added to scan electrode (Y), data pulse is added to the electrode group (Xa, Xb, Xc and Xd) that comprises addressing electrode (X1 is to Xn).Unlike Figure 30 A, the application time point of data pulse that is added to the addressing electrode of any one at least of a plurality of address electrodes of address electrode group can be set to more late than the application time point of scanning impulse.To this drive waveforms be described with reference to figure 30B.

With reference to figure 30B, unlike Figure 30 A, in drive waveforms of the present invention, the application time point that is added to the data pulse of a plurality of address electrodes of address electrode group (Xa, Xb, Xc and Xd) that comprise addressing electrode (X1 is to Xn) is different from the application time point of the scanning impulse that is added to scan electrode (Y), and the application time point of all data pulses is more late than the application time point of above-mentioned scanning impulse.In Figure 30 B, the application time point of all data pulses that is added to the addressing electrode that comprises in each address electrodes of address electrode group is more late than the application time point of scanning impulse, but the application time point of data pulse that only is added to one addressing electrode of a plurality of address electrodes of address electrode group can be more late than the application time point of above-mentioned scanning impulse, and the number of the data pulse of using after the application time point of scanning impulse can change.For example, shown in Figure 30 B, in drive waveforms according to driving method of the present invention, the application time point of supposing the scanning impulse that is added to scan electrode (Y) is " ts ", at time point than the late Δ t of time point that scanning impulse is added to scan electrode (Y), just, time point " ts+ Δ t " is added to the addressing electrode that comprises with data pulse in electrode group (Xa), to adapt to putting in order of the address electrodes of address electrode group that comprises addressing electrode (X1 is to Xn).At the time point than the late 2 Δ t of time point that scanning impulse are added to scan electrode (Y), just, time point " ts+2 Δ t " is added to data pulse the addressing electrode that comprises in electrode group (Xb).In the method, " ts+3 Δ t " is added to data pulse the addressing electrode that comprises in electrode group (Xc) at time point, and at time point " ts+4 Δ t " data pulse is added to electrode group (Xd).In other words, shown in Figure 30 B, after the application time point of the scanning impulse that is added to scan electrode (Y), data pulse is added to the address electrodes of address electrode group that comprises addressing electrode (X1 is to Xn).Unlike Figure 30 B, the application time point that is added to the data pulse of the address electrodes of address electrode group that comprises addressing electrode (X1 is to Xn) is different from the application time point of the scanning impulse that is added to scan electrode (Y), makes that the application time point of data pulse can be more Zao than the application time point of scanning impulse.To this drive waveforms be described with reference to figure 30C.

With reference to figure 30C, unlike Figure 30 A or Figure 30 B, in drive waveforms of the present invention, the application time point that is added to the data pulse of the address electrodes of address electrode group that comprises addressing electrode (X1 is to Xn) is different from the application time point of the scanning impulse that is added to scan electrode (Y), and the application time point of all data pulses is more Zao than the application time point of above-mentioned scanning impulse.In Figure 30 C, the application time point of all data pulses is more Zao than the application time point of scanning impulse, but only the application time point of a data pulse can be more Zao than the application time point of above-mentioned scanning impulse, and the number of the application data bursts address electrodes of address electrode group more Zao than the application time point of scanning impulse can change.For example, shown in Figure 30 C, in drive waveforms according to driving method of the present invention, the application time point of supposing the scanning impulse that is added to scan electrode (Y) is " ts ", at time point than the Zao Δ t of time point that scanning impulse is added to scan electrode (Y), just, time point " ts-Δ t ", data pulse is added to the addressing electrode that comprises in electrode group (Xa), to adapt to putting in order of the address electrodes of address electrode group that comprises addressing electrode (X1 is to Xn).At the time point than the Zao 2 Δ t of time point that scanning impulse are added to scan electrode (Y), just, time point " ts-2 Δ t " is added to data pulse the addressing electrode that comprises in electrode group (Xb).In the method, " ts-3 Δ t " is added to data pulse the addressing electrode that comprises in electrode group (Xc) at time point, and at time point " ts-(n-1) Δ t " data pulse is added to electrode group (Xd).In other words, shown in Figure 30 C, before the application time point of the scanning impulse that is added to scan electrode (Y), data pulse is added to the electrode group that comprises addressing electrode (X1 is to Xn).

At Figure 30 A in 30C, for example, the application time point that is added to the scanning impulse of scan electrode (Y) is " ts ", and the difference between the application time point of the data pulse of the application time point (ts) of scanning impulse and the most approaching application time point (ts) is " Δ t ", and the difference between the application time point of the data pulse of the application time point (ts) of scanning impulse and next the most approaching application time point (ts) is " 2 Δ t "." Δ t " is constant.In other words, in at least in any one of a plurality of address electrodes of address electrode group, the application time point that is added to the data pulse of addressing electrode is different from the application time point of the scanning impulse that is added to scan electrode (Y), and the difference that is added between the application time point of data pulse of the addressing electrode (X1 is to Xn) that comprises in a plurality of address electrodes of address electrode group is mutually the same respectively.Unlike here, the application time point of data pulse that is added to the addressing electrode of any one at least of a plurality of address electrodes of address electrode group is different from the application time point of the scanning impulse that is added to scan electrode (Y), and the application time point of data pulse that is added to each address electrodes of address electrode group of a plurality of address electrodes of address electrode group can be set to differ from one another respectively.In other words, suppose that the difference between the application time point of the data pulse of the application time point (ts) of scanning impulse and the most approaching application time point (ts) is " Δ t ", the difference between the application time point of the data pulse of the application time point (ts) of scanning impulse and next the most approaching application time point (ts) can be " 3 Δ t ".For example, if the application time point that scanning impulse is added to scan electrode (Y) is 0ns, data pulse is added to the addressing electrode that in electrode group (Xa), comprises at time point 10ns.Therefore, be 10ns at the application time point of the scanning impulse that is added to scan electrode (Y) and the difference that is added between the application time point of data pulse of electrode group (Xa).At time point 20ns data pulse is added to electrode group (Xb) as next address electrodes of address electrode group, make that at the application time point of the scanning impulse that is added to scan electrode (Y) and the difference that is added between the application time point of data pulse of electrode group (Xb) be 20ns, and be 10ns therefore, at the application time point of the data pulse that is added to electrode group (Xa) and the difference that is added between the application time point of data pulse of electrode group (Xb).At time point 40ns data pulse is added to electrode group (Xc) as next address electrodes of address electrode group, make that at the application time point of the scanning impulse that is added to scan electrode (Y) and the difference that is added between the application time point of data pulse of electrode group (Xc) be 40ns, and be 20ns therefore, at the application time point of the data pulse that is added to electrode group (Xb) and the difference that is added between the application time point of data pulse of electrode group (Xc).In other words, the application time point that is added to the scanning impulse of scan electrode (Y) differs from one another with the application time point that is added to the data pulse of each address electrodes of address electrode group, and the difference between the application time point of the data pulse that is added to each address electrodes of address electrode group can differ from one another respectively.

Consider the finite time of addressing period, can be according to the difference of address electrodes of address electrode group between the application time point of data pulse greater than 10ns, and preferably be set to less than 1000ns.Consideration preferably is provided with " Δ t " for having the scope of one of percentage to a predetermined scanning impulse width according to the scanning impulse width of the driving of Plasmia indicating panel.

The application time point of supposing the scanning impulse that is added to scan electrode (Y) is " ts ", and ignore the relation of the application time point of the data pulse that is added to a plurality of address electrodes of address electrode group, can be same to each other or different to each other respectively in a son in the difference between the application time point of the data pulse of the application time point (ts) of scanning impulse and the most approaching application time point (ts).As mentioned above, consider the finite time of addressing period, at the application time point of scanning impulse be preferably set to and have the scope of 10ns to 1000ns near the difference between the application time point of the data pulse of the application time point of scanning impulse.Consideration preferably is provided with " Δ t " for having the scope of one of percentage to a total addressing period according to the predetermined scanning impulse width of the driving of Plasmia indicating panel.

As mentioned above, if it is different in addressing period to be added to the application time point of the application time point of scanning impulse of scan electrode (Y) and the data pulse that is added to each address electrodes of address electrode group, as Figure 28 A to shown in the 28B.Each application time point in the data pulse that is added to each address electrodes of address electrode group that comprises addressing electrode (X1 is to Xn) reduces capacitive coupling, reduces the wave noise that being added to scan electrode and keeping electrode thus.Therefore, the address discharge that produces in addressing period is stable, has prevented to reduce the driving stability of Plasmia indicating panel thus.

As a result, stablized the address discharge of Plasmia indicating panel, made it possible to adopt the single scanning method that wherein scans whole front panel thus with a driver.

In addition, the length in cycle is kept in control, prevents the high temperature erroneous discharge thus.

When the application time point of scanning impulse and data pulse differs from one another, only illustrate and be described in the application time point and the difference between the application time point of data pulse in the son of the scanning impulse that is added to scan electrode (Y).But, based on a frame, the application time point that is added to the scanning impulse of scan electrode (Y) differs from one another with the application time point that is added to the data pulse of addressing electrode (X1 is to Xn) or address electrodes of address electrode group (Xa, Xb, Xc and Xd), and in each son field, the difference between the application time point of the data pulse that is added to addressing electrode can differ from one another.This drive waveforms will be described in the driving method according to the plasma display panel device of eighth embodiment of the invention.

Figure 31 illustrated in the drive waveforms according to the driving method of the plasma display panel device of eighth embodiment of the invention, and according to each son in the frame, the application time point that scanning impulse is set is different from the example of the application time point of data pulse.

Picture the 7th embodiment, in the driving method of the eighth embodiment of the present invention, only illustrated and described the application time point of the scanning impulse that wherein in addressing period, is added to scan electrode and be added to the situation that the application time point of the data pulse of addressing electrode differs from one another.But the eighth embodiment of the present invention is identical with the 6th or second embodiment, and therefore, even in the eighth embodiment of the present invention, as in the 6th or second embodiment, control is kept the length in cycle to reduce the number of space electric charge in the discharge cell.The control of the length in the cycle of keeping of eighth embodiment of the invention is identical with the 6th or the 7th embodiment basically, and therefore, the descriptions thereof are omitted.In addition, will omit description of drawings.

As shown in figure 29, in drive waveforms according to the driving method of plasma display panel device of the present invention, identical in identical son field in the difference between the application time point of the data pulse that is added to addressing electrode (X), and the application time point that is added to the scanning impulse of scan electrode (Y) differs from one another with the application time point that is added to the data pulse of addressing electrode (X), and in any one son at least of a frame, in addressing period, be added to difference between the application time point of data pulse of addressing electrode (X) and be different from difference between the application time point of the data pulse that in the addressing period of another son, is added to addressing electrode.

The length in cycle is kept in control, prevents above-mentioned high temperature erroneous discharge thus.

The application time point of scanning impulse that is added to scan electrode (Y) is different with the application time point of the data pulse that is added to addressing electrode (X1 is to Xn), prevents from the instability of address discharge thus and prevent to drive stability to reduce, and therefore, has increased driving efficient.

In the illustrative methods that the application time point of data pulse therein and scanning impulse differs from one another, the first son field at a frame, the application time point that is added to the data pulse of addressing electrode (X1 is to Xn) is different from the application time point of the scanning impulse that is added to scan electrode (Y), and the difference between the application time point of the data pulse that is added to addressing electrode is set to " Δ t ".In addition, the picture first son field, in the second son field, the application time point that is added to the data pulse of addressing electrode (X1 is to Xn) is different from the application time point of the scanning impulse that is added to scan electrode (Y), and the difference between the application time point of the data pulse that is added to addressing electrode is set to " 2 Δ t ".In said method, differ from one another in each son field that the difference between the application time point of the data pulse that is added to addressing electrode comprises in a frame, such as, " 3 Δ t " and " 4 Δ t ".

In drive waveforms of the present invention, in at least one height field, the application time point of data pulse and the application time point of scanning impulse differ from one another, and in each son field, the application time point that the data pulse that differs from one another can be set is more Zao and late than the application time point of scanning impulse.For example, in the first son field, the application time point that data pulse is set is more Zao and late than the application time point of scanning impulse, and in the second son field, the application time point that all data pulses are set is more Zao than the application time point of scanning impulse, and in the 3rd son field, the application time point that all data pulses are set is more late than the application time point of scanning impulse.

To use region D, E and the F of Figure 31 below, describe drive waveforms in further detail to 32C with reference to figure 32A.

Figure 32 A describes the drive waveforms of Figure 31 in detail to 32C.

At first with reference to figure 32A, in drive waveforms according to driving method of the present invention, for example, in the first son field, suppose D zone at Figure 31, the application time point that is added to the scanning impulse of scan electrode (Y) is ts, than the time point that scanning impulse is added to the Zao 2 Δ t of scan electrode (Y), just, time point " ts-2 Δ t " is added to addressing electrode (X1) with data pulse, to adapt to putting in order of addressing electrode (X1 being to Xn).Than the time point that scanning impulse is added to the Zao Δ t of scan electrode (Y), just, time point " ts-Δ t " is added to addressing electrode (X2) with data pulse.In the method, " ts-Δ t " is added to electrode (Xn-1) with data pulse at time point, and at time point " ts-2 Δ t " data pulse is added to electrode (Xn).In other words, shown in Fig. 8 A, before or after the application time point of the scanning impulse that is added to scan electrode (Y), data pulse is added to addressing electrode (X1 is to Xn).

With reference to figure 32B, unlike Figure 32 A, in drive waveforms of the present invention, in the E zone of Figure 31, the application time point that is added to the data pulse of addressing electrode (X1 is to Xn) is different from the application time point of the scanning impulse that is added to scan electrode (Y), and the application time point of all data pulses is more late than the application time point of above-mentioned scanning impulse.In Figure 32 B, the application time point of all data pulses is more late than the application time point of scanning impulse, but only the application time point of a data pulse can be set to more lately than the application time point of above-mentioned scanning impulse, and the number of the data pulse of using after the application time point of scanning impulse changes.For example, shown in Figure 32 B, in drive waveforms according to driving method of the present invention, the application time point of supposing the scanning impulse that is added to scan electrode (Y) is " ts ", than the time point that scanning impulse is added to the late Δ t of scan electrode (Y), just, time point " ts+ Δ t " is added to addressing electrode (X1) with data pulse, to adapt to putting in order of addressing electrode (X1 being to Xn).Than the time point that scanning impulse is added to the late 2 Δ t of scan electrode (Y), just, time point " ts+2 Δ t " is added to addressing electrode (X2) with data pulse.In the method, " ts+3 Δ t " is added to electrode (X3) with data pulse at time point, and at time point " ts+n Δ t " data pulse is added to electrode (Xn).

With reference to figure 32C, unlike Figure 32 A or Figure 32 B, in drive waveforms of the present invention, F zone at Figure 31, the application time point that is added to the data pulse of addressing electrode (X1 is to Xn) is different from the application time point of the scanning impulse that is added to scan electrode (Y), and the application time point of all data pulses is more Zao than the application time point of above-mentioned scanning impulse.In Figure 32 C, the application time point of all data pulses is more Zao than the application time point of scanning impulse, but only the application time point of a data pulse can be set to more early than the application time point of above-mentioned scanning impulse, and the number of the data pulse of using before the application time point of scanning impulse can change.For example, shown in Figure 32 C, in drive waveforms according to driving method of the present invention, the application time point of supposing the scanning impulse that is added to scan electrode (Y) is " ts ", than the time point that scanning impulse is added to the Zao Δ t of scan electrode (Y), just, time point " ts-Δ t " is added to addressing electrode (X1) with data pulse, to adapt to putting in order of addressing electrode (X1 being to Xn).Than the time point that scanning impulse is added to the Zao 2 Δ t of scan electrode (Y), just, time point " ts-2 Δ t " is added to addressing electrode (X2) with data pulse.By this method, " ts-3 Δ t " is added to electrode (X3) with data pulse at time point, and at time point " ts-n Δ t " data pulse is added to electrode (Xn).In other words, shown in Figure 32 C, before the application time point of the scanning impulse that is added to scan electrode (Y), data pulse is added to addressing electrode (X1 is to Xn).

The drive waveforms of Figure 32 A, 32B and 32C is identical with the drive waveforms of Figure 27 A, 27B and 27D.Therefore, omission is repeated in this description.

If the application time point that is added to the application time point of scanning impulse of scan electrode (Y) and the data pulse that is added to addressing electrode (X1 is to Xn) is different in addressing period of each son, as mentioned above, use the capacitive coupling that time point reduces panel in each of the data pulse that is added to addressing electrode (X1 is to Xn), reduced the noise that is added to scan electrode and keeps electrode thus.Therefore, be stabilized in the address discharge that produces in the addressing period, prevented that thus the driving stability of Plasmia indicating panel from reducing.

As a result, the address discharge of stabilized plasma display panel makes it possible to adopt the single scanning method that wherein scans whole front panel with a driver thus.

As mentioned above, it should be understood by one skilled in the art that the present invention can be embodied in other concrete form.For example, only illustrated above and described wherein being different from the time point that scanning impulse is added to the time point of all addressing electrodes (X1 is to Xn) data pulse has been added to all addressing electrodes (X1 is to Xn), perhaps all addressing electrodes are grouped into four electrode groups with identical addressing electrode number, and data pulse are added to the method for each electrode group at the time point of the time point that is different from the application scanning pulse according to putting in order.But, can also provide wherein in all addressing electrodes (X1 is to Xn), the addressing electrode of odd number is set to an electrode group, and the addressing electrode of even number is set to another electrode group, and data pulse is added to all addressing electrodes in the identical electrodes group at identical time point, and the application time point of the data pulse of each electrode group is set to be different from the method for the application time point of application scanning pulse.

A kind of method also is provided, wherein addressing electrode (X1 is to Xn) has been grouped into a plurality of electrode groups that the addressing electrode number has at least one addressing different electrode, and at the time point of the application time point that is different from scanning impulse in each electrode group application data bursts.For example, the driving method of Plasmia indicating panel of the present invention can be changed, make, the application time point of supposing the scanning impulse that is added to scan electrode (Y) is " ts ", " ts+ Δ t " is added to addressing electrode (X1) with data pulse at time point, and " ts+3 Δ t " is added to addressing electrode (X2 is to X10) with data pulse at time point, and at " ts+4 Δ t " data pulse is added to addressing electrode (X11 is to Xn).

With reference to Figure 33, plasma display panel device of the present invention comprises Plasmia indicating panel (PDP) 600, be used to respond to the temperature sensor 606 of the temperature of PDP600, be used to provide the data driver 602 of the addressing electrode of data to PDP600 (X1 is to Xm), be used to drive the scanner driver 603 of the scan electrode (Y1 is to Yn) of PDP600, be used to drive PDP600 keep electrode (Z) keep driver 604, be used for controlling each driver 602 according to the temperature of PDP600,603 and 604 driving pulse controller 601 and be used to produce each driver 602, the driving voltage generator 605 of 603 and 604 required driving voltages.

The temperature of temperature sensor 606 induction PDP produces induced voltage, induced voltage is converted to digital signal, and provides digital signal to arrive driving pulse controller 601.

Data driver 602 receives experience and revises circuit by reverse gamma, and the reverse gamma-corrected of error diffusion circuit, mistake are expanded, and is mapped to the data of pre-stator field pattern shape by a son mapping circuit.In pre-reset cycle (PRERP), reset cycle (RP) with during keeping the cycle (SP), data driver 602 is added to addressing electrode (X1 is to Xm) with 0V or ground level voltage.In addition, under the control of controller 601, data driver 602 is sampling and latch data during the addressing period (AP) of each son field, and provides data voltage (Va) to addressing electrode (X1 is to Xm) afterwards.

Scanner driver 603 is added to scan electrode (Y) with rising edge waveform (Ramp-up) and negative edge waveform (Ramp-down) during the reset cycle.In addition, (will keep pulse (SUS) and be added to scan electrode (Y) to scan electrode Y with during the cycle of keeping by scanning impulse Vy) (Sp) at the negative scanning voltage of order application during the addressing period for scanner driver 603.

Shown in Figure 12,13,14,16,22,23 and 24, under the control of driving pulse controller 601, during pre-reset cycle (PRERP) and reset cycle (RP), scanner driver 603 provides tilt waveform (NRY1, PRY1, PRY2, NRY2) with all discharge cells of initialization, and during addressing period (AP), order provides scanning impulse (SCNP) that the sweep trace of data is provided with selection to scan electrode (Y1 is to Yn) afterwards.When PDP has high temperature, during the cycle of keeping, scanner driver 603 provide its rising cycle and decline cycle be about 340ns ± 60ns keep pulse (FSTSUSP, SUSP) to scan electrode Y1 to Yn with selected open in the unit to produce keep discharge.

Keeping driver 604 uses during cycle that is used to produce negative edge waveform (Ramp-down) and addressing period and negative keeps bias voltage (Vzb) to keeping electrode (Z), and with scanner driver 603 blocked operations, applying sustain pulse (SUS) is to keeping electrode (Z) during the cycle of keeping.

As Figure 14,16 and 22 to shown in 24, under the control of driving pulse controller 601, in pre-reset cycle (PRERP) and reset cycle (RP), keep driver 604 tilt waveform (NRZ1 is provided, and NRZ2) to keeping electrode Z, with all discharge cells of initialization, and in addressing period (AP), provide Z bias voltage (Vzb) afterwards to keeping electrode (Z).In addition, keep driver 604 in the cycle of keeping (SP) and scanner driver 603 blocked operations, keep pulse (FSTSUSP, SUSP, and LSTSUSP) to keeping electrode (Z) to provide.When PDP had high temperature, the pulse width of keeping pulse (LSTSUP) at last that produces in keeping driver 604 was lengthened to 1 μ s to 1ms.Be about 340ns ± 60ns each the rising cycle and decline cycle of keeping pulse (FIRSTSUSP, SUSP, LSTSUSP).

At addressing period and keeping in the cycle, driving pulse controller 601 produces and is used for control data driver 602, scanner driver 603 or keep driver 604 synchronously and the timing control signal in time sequential routine, and timing control signal is added to data driver 602, scanner driver 603 or keeps driver 604, thereby control data driver 602, scanner driver 603 or keep driver 604.Specifically, driving pulse controller 601 control data drivers 602, scanner driver 603 or keep driver 604, make in any one addressing period of sub at least of frame, at least one the application time point of data pulse that is added to a plurality of address electrodes of address electrode group of comprising at least one addressing electrode (X) is different from the application time point of the scanning impulse that is added to scan electrode (Y), and control will be kept the length in the cycle of keeping that pulse is added to scan electrode (Y) or keeps electrode (Z) to reduce the space charge in the discharge cell.

Driving pulse controller 601 receives vertical/horizontal synchronizing signal and clock signals, produces the required timing control signal (CTRX, CTRY and CTRZ) of each driver 602,603 and 604.And provide timing control signal (CTRX, CTRY and CTRZ), thereby control each driver 602,603 and 604 to corresponding driving device 602,603 and 604.The timing control signal (CTRX) that is provided to data driver 602 comprises the sampling clock that is used for sampled data, latch control signal and be used for the switch controlling signal of the opening/closing time of control energy recovery circuit and driving switch element.The timing control signal (CTRY) that is provided to scanner driver 603 comprises the switch controlling signal of the opening/closing time of the energy recovering circuit that is used for gated sweep driver 603 and driving switch element.Be provided to the switch controlling signal that the timing control signal (CTRZ) of keeping driver 604 comprises the opening/closing time of the energy recovering circuit that is used for gated sweep driver 604 and driving switch element.

When PDP600 has high temperature, driving pulse controller 601 receives output voltage from temperature sensor 606, and gated sweep driver 603 and keep driver 604, make that keeping pulse (LSTSUSP) at last prolongs to have the scope of 1 μ s to 1ms, and go back gated sweep driver 603 and keep driver 604, the rising cycle and the decline cycle that make each keep pulse (FSTSUSP, SUSP and LSTSUSP) are 340ns ± 60ns.In addition, driving pulse controller 601 gated sweep drivers 603 and keep driver 604 with at a Y reverse caster waveform (NRY1) before are added to the positive voltage (Vs) of keeping to keep electrode (Z).

Driving voltage generator 605 produces the voltage (Vry, Vs ,-V1 ,-V2 ,-Vy, Va, Vyb and Vzb) that is provided to PDP600.These driving voltages can change according to the composition of flash-over characteristic or discharge gas, and these are according to the resolution of PDP600, changes such as model.

Described the present invention like this, clearly can carry out multiple change it.The disengaging the spirit and scope of the present invention are not thought in this change, and all thisly are intended to be included among the scope of following claim for the conspicuous modification of those of ordinary skills.

Claims

1. plasma display panel device, it comprises:

Plasmia indicating panel, it comprises scan electrode, keeps electrode and addressing electrode;

First controller, it is used to be controlled at the application time point that the application time point that is used for the data pulse of addressing electrode during the addressing period is different from the scanning impulse that is used for scan electrode; With

Second controller, its be used to control be added to scan electrode and keep electrode at least one keep pulse at last;

Wherein, when this second controller was higher than room temperature basically when the temperature around the temperature in the Plasmia indicating panel or the Plasmia indicating panel, the interval that is controlled between the initializing signal of the application time point of keeping pulse at last and next son field was longer than the interval of PDP at room temperature.

2. plasma display panel device as claimed in claim 1,

Wherein, the application time point of the data pulse of this first controller control application is before the application time point of scanning impulse.

3. plasma display panel device as claimed in claim 1,

Wherein, the application time point of this first controller control data pulse is after the application time point of scanning impulse.

4. plasma display panel device as claimed in claim 1,

Wherein, when the temperature of the temperature of Plasmia indicating panel or panel near zone was higher than room temperature basically, this scope of keeping rise time of pulse or fall time was from 320ns to 360ns.

5. plasma display panel device as claimed in claim 1,

Wherein, should be in the difference range between the application time point of the application time point of data pulse and scanning impulse from 10ns to 1 μ s.

6. plasma display panel device as claimed in claim 5,

Wherein, in the end keep after the pulse, will having gradually, the negative edge waveform of drop-out voltage is added to scan electrode.

7. plasma display panel device as claimed in claim 6,

Wherein, when the negative edge waveform was added to scan electrode, essence was kept voltage and is added to and keeps electrode.

8. plasma display panel device as claimed in claim 7,

Wherein, this keep voltage by when keeping pulse at last and be added to scan electrode through application after the schedule time.

9. plasma display panel device, it comprises:

First controller, it is used to be controlled at the application time point that is used for the data pulse of addressing electrode during the addressing period and differs from one another; With

Second controller, its be used to control be added to scan electrode and keep electrode at least one keep pulse at last,

Wherein, this second controller is controlled at that the width of keeping pulse at last at least one height field of frame is different from the width that other keeps pulse during the cycle of keeping.

10. plasma display panel device as claimed in claim 9,

Wherein, when the temperature around temperature in the Plasmia indicating panel or the Plasmia indicating panel is higher than room temperature basically, this first controller is at least one height field of frame, and before using reset pulse, the pre-reset pulse that will have the negative polarity tilt waveform is added to scan electrode.

11. plasma display panel device as claimed in claim 9,

Wherein, when the temperature around the temperature in the Plasmia indicating panel or the Plasmia indicating panel is essence high temperature, the scope of in the end keeping the interval between the initializing signal of the concluding time point of pulse application and next son field from 100 μ s to 1ms.

12. plasma display panel device as claimed in claim 9,

When the temperature around the temperature in the Plasmia indicating panel or the Plasmia indicating panel is essence high temperature, the width range of keeping pulse at last from 1 μ s to 1ms.

13. plasma display panel device as claimed in claim 10,

Wherein, after pre-reset pulse is added to scan electrode, during the cycle of keeping, be added to scan electrode respectively and keep electrode first pulse width and be added to the width of keeping pulse at last of keeping electrode to be set to keep pulse than other wide.

14. plasma display panel device as claimed in claim 10,

Wherein, this pre-reset pulse is the negative edge waveform.

15. plasma display panel device as claimed in claim 14,

Wherein, after the negative edge waveform that will have negative polarity during the pre-reset cycle was added to scan electrode, the negative edge waveform with negative polarity was added to scan electrode during the cycle of removing of reset cycle.

16. plasma display panel device as claimed in claim 15,

The negative edge waveform is added to scan electrode during the cycle of removing of reset cycle.

17. plasma display panel device as claimed in claim 11,

Wherein, when the temperature around the temperature in the Plasmia indicating panel or the Plasmia indicating panel was essence high temperature, the width of keeping pulse at last was wideer than other width of keeping pulse in the previous son of the son of using pre-reset pulse therein.

18. a driving method that comprises scan electrode, keeps the plasma display panel device of electrode and addressing electrode, this method comprises:

Use the scanning impulse that is added to the data pulse of addressing electrode and is added to scan electrode during addressing period, wherein, the application time point of this data pulse is different from the application time point of scanning impulse,

When the temperature around the temperature in the Plasmia indicating panel or the Plasmia indicating panel is essence high temperature, be controlled at be added to scan electrode and keep at least one the concluding time point of keeping pulse at last and the interval between the initializing signal of next son field of electrode longer than the interval under the room temperature.

19. method as claimed in claim 18,

Wherein, the application time point of this data pulse is before the application time point of scanning impulse.

20. method as claimed in claim 18,

Wherein, the application time point of this data pulse is set at after the application time point of scanning impulse.

21. method as claimed in claim 18,

Wherein, when the temperature of the temperature of Plasmia indicating panel or panel near zone was higher than room temperature basically, this kept the rise time of pulse or the scope of fall time is from 320ns to 360ns.

22. method as claimed in claim 18,

23. method as claimed in claim 18,

24. method as claimed in claim 23,

25. method as claimed in claim 24,

26. a driving method that comprises scan electrode, keeps the plasma display panel device of electrode and addressing electrode, this method comprises:

At least one the width of keeping pulse at last that control is added to scan electrode and keeps electrode at least one height field at frame during the cycle of keeping is different from the width that other keeps pulse.

27. method as claimed in claim 26,

Wherein, when the temperature around temperature in the Plasmia indicating panel or the Plasmia indicating panel was essence high temperature, at least one height field of frame, before using reset pulse, the pre-reset pulse that will have the negative polarity tilt waveform was added to scan electrode.

28. method as claimed in claim 26,

29. method as claimed in claim 26,

30. method as claimed in claim 26,

Wherein, after pre-reset pulse is added to scan electrode, during the cycle of keeping, be added to scan electrode respectively and keep electrode first pulse width and be added to the width of keeping pulse at last of keeping electrode to be set to keep than other width of pulse wide.

31. method as claimed in claim 27,

Wherein, this pre-reset pulse is the negative edge waveform.

32. method as claimed in claim 31,

33. method as claimed in claim 32,

34. method as claimed in claim 27,

Wherein, when the temperature around temperature in the Plasmia indicating panel or the Plasmia indicating panel is essence high temperature, use therein in sub the previous son field of pre-reset pulse, the width of keeping pulse at last is wideer than other width of keeping pulse.