CN1975815A - Plasma displaying device and driving method thereof - Google Patents

Abstract

The invention involves plasma display device and its driving method. The plasma display device includes following parts: panels maintaining multiple electrodes which are divided into upper part and lower part maintaining electrode clusters according to their scanning order and have same connections in the same electrode cluster; drivers to drive electrodes; descending control part which will reduce the electronic reduction between scanning electrodes and lower part maintaining electrode cluster when descendent waveform is entered to scanning electrodes. Driving method is the plasma display devices driving method, including reducing the electronic reduction between maintaining electrode clusters and scanning electrodes in the period that descendent waveform is entered.

Description

Plasma display system and driving method thereof

Technical field

The invention relates to plasma display system and driving method thereof, be described in more detail, it is about improving contrast-response characteristic and driving locking and save the plasma display system of manufacturing expense and driving method.

Background technology

Plasmia indicating panel (Plasma Display Panel; To call " PDP " in the following text) utilize He+Xe, Ne+Xe, the ultraviolet ray that produces during the discharge of inert mixed gas such as He+Xe+Ne makes the luminous and display frame of fluorescer.Such PDP can realize filming and maximization, and along with nearest technological development, its image quality is improved constantly.

Fig. 1 is in order to show the grey menu pictorial diagram of 8 byte default code of 256 grades of grey menu at PDP.

With reference to figure 1, PDP is in order to realize the grey menu of picture, a frame is divided into the different a plurality of frame subcycles of number of light emission times, each frame subcycle is divided into the baseline of all unit of initialization again, during selecting to carry out the address period of discharge cell and realizing keeping of grey menu according to discharge time.For example, during with 256 grades of grey menu display frames, be divided into 8 frame subcycles (SF1 to SF8) image duration (16.67ms) that is equivalent to 1/60 second, and each is divided into baseline (RP) again 8 frame subcycles (SF1 to SF8), address period (AP) and keep during (SP).At this moment the baseline of each frame subcycle (RP) is all identical in each frame subcycle with address period (AP), increases but reach the corresponding with it number of keeping pulse ratio with 2n (n=0,1,2,3,4,5,6,7) in each frame subcycle during keeping.

Fig. 2 is the synoptic diagram of existing P DP drive waveforms.

With reference to figure 2, frame subcycle (SF) comprises between the original area of all unit of initialization (RP), selects between the addressed area of the unit that discharges (AP), and the interval of keeping of keeping the discharge of selected unit drives (SP).

Between original area, in (RP), import acclivity (PR) waveform simultaneously at introversive all scan electrodes of startup first transition (SU) (Y).Because faint discharge (starting the discharge of rising) can take place in this acclivity waveform (PR), the discharge cell of picture and form the wall electric charge in the unit.Import acclivity waveform (PR) in starting last transition (SD) after, the positive polarity (+) lower than the pick-up voltage of acclivity waveform (PR) is kept voltage (Vs) and is begun to drop to the negative polarity scanning voltage (decline ramp waveform (NR) Vy) is input to scan electrode (Y) simultaneously.Therefore faint elimination discharge in decline ramp waveform (NR) generation unit is fully eliminated the unnecessary wall electric charge that forms on the scan electrode.This discharge that start to descend makes the even distribution unit in can normally carry out the wall electric charge of address discharge degree.

In between addressed area (AP), when being input to scan electrode (Y) in order, negative polarity (-) scanning impulse (SCNP) imports the data pulse (DP) of positive polarity (+) on the addressing electrode.The wall voltage that generates along with (RP) between the voltage difference and original area of this scanning impulse (SCNP) and data pulse (DP) increases, and in the discharge cell of data pulse (DP) input address discharge takes place.Form certain wall electric charge during address discharge in the selecteed unit.

Simultaneously, between driving last transition (SD) and addressed area, keep electrode (Z) in (AP) and go up input positive polarity (+) bias voltage (Vzb).

Keeping interval (SP), scan electrode (Y) with keep electrode (Z) and go up alternately input and keep pulse (SUSP).At this moment, during along with address discharge in the selecteed unit wall voltage with keep pulse (SUSP) and increase, keep pulse (SUSP) when input scan electrode (Y) and keep between the electrode (Z) and keep discharge at each, show that promptly the demonstration of drawing a portrait discharges with the face discharge type.

Like this, finish the driving process of a frame subcycle ionic medium panel.

The wall charge variation in the baseline is as follows in the driving process of the existing plasma panel of Qu Donging like this.

Fig. 3 is the synoptic diagram that the baseline inner wall charge changes in the driving process of existing plasma panel.

Among Fig. 3, being to show the wall state of charge that starts in the baseline between the rising stage (a), is to show the wall state of charge that starts in the baseline between decrement phase (b).At first, along with importing the acclivity waveform to scan electrode (Y), scan electrode (Y) accumulation negative polarity wall electric charge is kept electrode (Z) and is upward accumulated positive polarity wall electric charge with addressing electrode (X) between the startup rising stage.Then, interior between the startup decrement phase along with scan electrode (Y) is upward imported the decline ramp waveform, the wall electric charge of polarity of voltage counter-rotating and excessive formation of elimination and inhomogeneous formation.At this moment, produce the dark discharge of decline contrast-response characteristic, the discharge of the contrast-response characteristic that generally descends is to occur in the scan electrode (Y) on the whole area in unit and the face of keeping between the electrode (Z) discharges by transparency electrode.Therefore be necessary suitably to adjust scan electrode (Y) and keep that potential difference (PD) improves contrast-response characteristic between the electrode (Z) according to different situations.

Simultaneously, opposite with the inceptive impulse of input simultaneously, scanning impulse is to import in order, because such characteristic is along with the wall loss of charge, unstable more the closer to the latter half of address discharge of scanning.

Summary of the invention

In order to address the above problem, the object of the invention improves contrast-response characteristic when providing and guaranteeing to drive locking by stabilizing address discharge, saves the plasma display system and the driving method thereof of manufacturing expense.

For the present invention's the 1st embodiment ionic medium display device of reaching above-mentioned purpose comprises: be divided into top and the bottom is kept electrode group and comprised the common a plurality of plasma panels of keeping electrode that are connected with electrode group according to a plurality of scan electrodes and scanning sequency; Each drive division of drive electrode; During the part of scan electrode input falling waveform, reduce the 1st decline control part that potential difference (PD) between electrode group and the scan electrode is kept in the bottom between initial decrement phase.

The 1st decline control part is kept electrode group voltage by the bottom of floating, and to reduce the potential difference (PD) of keeping between electrode group and the scan electrode be feature.

The voltage minimum of falling waveform is than the minimum value of the scanning impulse that is input to scan electrode in address period feature greatly.

It is feature that falling waveform is kept state in during certain.

Above-mentioned is to be feature more than 0.1 times below 0.5 times between decrement phase during certain.

Simultaneously, the 2nd embodiment ionic medium display device of the present invention comprises: be divided into top and the bottom is kept electrode group and comprised the common a plurality of plasma panels of keeping electrode that are connected with electrode group according to a plurality of scan electrodes and scanning sequency; Each drive division of drive electrode; During the part of scan electrode input falling waveform, reduce the 2nd decline control part that potential difference (PD) between electrode group and the scan electrode is kept in the bottom between decrement phase.

The 2nd decline control part is kept top and the bottom electrode group voltage, and to reduce the potential difference (PD) of keeping between electrode group and the scan electrode be feature by floating.

Unsteady bottom keep electrode group voltage during than unsteady top keep electrode group voltage during long be feature.

The minimum value that is input to the scan pulse voltage of scan electrode in the voltage minimum of falling waveform and the address period is all feature mutually.

It is feature that falling waveform voltage is kept minimum state in during certain.

Above-mentioned is to be feature more than 0.1 times below 0.5 times between decrement phase during certain.

The driving method of the present invention's the 1st embodiment ionic medium display device, be divided into top and bottom according to a plurality of scan electrodes and scanning sequency and keep electrode group and do not comprise with electrode group in the driving method of the common a plurality of plasma display systems of keeping electrode that are connected and comprise, between decrement phase in during the part of scan electrode input falling waveform in minimizing bottom stage of keeping potential difference (PD) between electrode group and the scan electrode.

Electrode group voltage is kept in the bottom of floating in during the part of input falling waveform in the scan electrode, reduces the bottom with this and keeps that potential difference (PD) is a feature between electrode group and the scan electrode.

The minimum value of falling waveform voltage is than the minimum value of the scanning impulse that is input to scan electrode in address period feature greatly.

Falling waveform during certain in voltage to keep minimum state be feature.

Above-mentioned is to be feature more than 0.1 times below 0.5 times between decrement phase during certain.

The driving method of the present invention's the 2nd embodiment ionic medium display device, be divided into top and bottom according to a plurality of scan electrodes and scanning sequency and keep electrode group and comprise with electrode group in the driving method of the common a plurality of plasma display systems of keeping electrode that are connected and comprise, reduce in during the part of scan electrode input falling waveform between decrement phase the bottom keep potential difference (PD) between electrode group and the scan electrode by the scanning sequency minimizing stage.

Electrode group is kept in the bottom of floating in during the part of input falling waveform in the scan electrode, reduces the bottom with this and keeps that potential difference (PD) is a feature between electrode group and the scan electrode.

Unsteady bottom keep electrode group voltage during than unsteady top keep electrode group during long be feature.

The voltage minimum of falling waveform is than the minimum value of the scanning impulse that is input to scan electrode in address period feature greatly.

It is feature that falling waveform is kept minimum state in during certain.

Above-mentioned is to be feature more than 0.1 times below 0.5 times between decrement phase during certain.

Description of drawings

Fig. 1 is the synoptic diagram of the frame subcycle figure of 8 byte default code of realization 256 GTG levels in plasma panel.

Fig. 2 is the drive waveforms synoptic diagram of existing plasma panel.

Fig. 3 (comprise (a) and (b)) is the synoptic diagram that the baseline inner wall charge changes in the driving process of existing plasma panel.(a) being to show the wall state of charge that starts in the baseline between the rising stage, is to show the wall state of charge that starts in the baseline between decrement phase (b).

Fig. 4 is the synoptic diagram of the present invention's the 1st embodiment ionic medium display device.

Fig. 5 is the synoptic diagram of the drive waveforms of the present invention the 1st embodiment 1 embodiment ionic medium display device.

Fig. 6 is the synoptic diagram of the 2nd embodiment ionic medium display device of the present invention.

Fig. 7 is the drive waveforms synoptic diagram of the 2nd embodiment ionic medium display device of the present invention.

Fig. 8 is in the drive waveforms of the 2nd embodiment ionic medium display device of the present invention, between decrement phase in the details drawing of drive waveforms of input.

Embodiment

Describe the embodiment of ionic medium display device of the present invention and driving method thereof in detail below with reference to accompanying drawing.

Fig. 4 is the synoptic diagram of the present invention's the 1st embodiment ionic medium display device.

As shown in Figure 4, the 1st embodiment ionic medium display device of the present invention comprises with the lower part: in baseline, address period and in during keeping, be divided into top and electrode group (ZT is kept in the bottom according to addressing electrode (X1 to Xm), scan electrode (Y1 to Yn) and scanning sequency, ZB), the electrode (Z) of keeping that connects not jointly with electrode group is gone up the plasma panel (400) that the certain driving pulse of input produces the gas discharge of discharge space and shows portrait; Panel (not shown) is gone up the data-driven portion (42) that the addressing electrode (X1 to Xm) that forms provides input backward; The scanning driving part of driven sweep electrode (Y1 to Yn) (43); Driving top is kept the top of electrode group (ZT) and is kept drive division (44A); The driving bottom is kept the bottom of electrode group (ZB) and is kept drive division (44B); Control each drive division (42,43,44A, timing control part (41) 44B); (42,43,44A 44B) provides the driving voltage generating unit (45) of driving voltage to each drive division; Reduce the 1st decline control part (46) of keeping potential difference (PD) between electrode group (ZB) and the scan electrode (Yn/2+1 to Yn) in during the part of (Yn/2+1 to Yn) input falling waveform in the scan electrode between decrement phase.

Below describe the function and the effect of each inscape of the present invention the 1 embodiment ionic medium display device in detail.

At first, in the plasma panel (400), front panel (not shown) and rear panel (not shown) are combined in the discharge space both sides that comprise inert gas at a certain distance, most electrodes on the front panel, for example scan electrode (Y1 to Yn) and keep electrode (Z) and form with matching form.At this moment keep electrode (Z) and be divided into according to scanning sequency that electrode group (ZT) is kept on top and electrode group (ZB) is kept in the bottom, respectively keep electrode group and connect not jointly with electrode group.Simultaneously, on the rear panel, (ZT, ZB) direction of intersecting forms addressing electrode (X1 to Xm) to keep electrode group with scan electrode (Y1 to Yn) and top and the bottom.

Data-driven portion (42) by after γ revisal and error diffusion, provides the data of image by not shown contrary γ revisal loop and error diffusion circuit etc. to the frame subcycle of prior setting through frame subcycle image loop.This data-driven portion (42) is provided to addressing electrode (X1 to Xm) with these data after choosing data and locking under the control of timing control part (41).

Scanning driving part (43) under the control of timing control part (41), input simultaneously comprise in the baseline for the initialization whole image and the initial waveform of the rising waveform that rises gradually that provides to all scan electrodes (Y1 to Yn) and the falling waveform that descends gradually.

In the address period of scanning driving part (43) after initial waveform is provided to scan electrode (Y1 to Yn), in order to select sweep trace, the scan reference voltage (Vsc) to scan electrode (Y1 to Yn) input positive polarity reaches scanning voltage (scanning impulse Vy) that is begun to drop to negative polarity by scan reference voltage (Vsc) in order.

Simultaneously, scanning driving part (43) is kept pulse to scan electrode (Y1 to Yn) input in during keeping and is made the unit of selection address period in keep discharge.

Drive division (44A) is kept under the control of timing control part (41) in top, after between decrement phase and in the address period, providing the bias-voltage of keeping voltage (Vs) grade that has positive polarity, during keeping in and scanning driving part (43) alternating movement will keep pulse and be provided to top and keep electrode group (ZT).

Drive division (44B) is kept under the control of timing control part (41) in the bottom, in between decrement phase the bias-voltage of keeping voltage (Vs) grade of positive polarity being provided to the bottom keeps in the electrode group (ZB), in during the latter half of part between decrement phase, will reduce the decline control waveform of keeping the potential difference (PD) between electrode group (ZB) and the scan electrode (Yn/2+1 to Yn) in the bottom according to the decline control signal (T) of the 1st decline control part (46) input and be provided to the bottom and keep electrode group (ZB).And, after in address period, the bias-voltage of keeping voltage (Vs) grade of positive polarity being offered the bottom and keeping electrode group (ZB), during keeping, will keep pulse and offer the bottom and keep electrode group (ZB) with scanning driving part (43) alternating movement.

The 1st decline control part (46) between decrement phase in during the part of scan electrode (Y1 to Yn) input falling waveform in, keep the decline control signal (T) of keeping the decline control waveform of potential difference (PD) between electrode group (ZB) and the scan electrode (Yn/2+1 to Yn) in electrode group (ZB) input bottom to the bottom and be input to and keep drive division (44B).

Timing control part (41) generates the timing control signal (CTRX that each drive division needs after receiving the vertical/horizontal signal same period, CTRY, CTRZ), and with this timing control signal (CTRX, CTRY, CTRZ) be provided to corresponding drive division (42,43,44A, 44B) control each drive division (42,43,44A, 44B).The timing control signal (CTRX) that input is gone up by data-driven portion (42) comprises the clock of choosing of choosing data, lock control signal, the switch controlling signal of the ON/OFF time of energy recovery circuit and controlling and driving switch block.Scanning driving part (43) is gone up the switch controlling signal that the timing control signal of importing (CTRY) comprises the ON/OFF time of interior energy recovery circuit of gated sweep drive division (43) and driving switch parts.Drive division is kept in top and bottom, and (44A, 44B) the timing control signal (CTRZ) that goes up input comprises control top and drive division (44A, 44B) switch controlling signal of the ON/OFF time of Nei energy recovery circuit and driving switch parts are kept in the bottom.

Driving voltage generating unit (45) produce comprise keep voltage (Vs), scan reference voltage (Vsc), data voltage (Va), drop-out voltage (Vw), scanning voltage (Vy) etc. each drive division (42,43,44A, 44B) Bi Yao various driving voltages.Such driving voltage can be according to the formation or the discharge cell structural change of discharge gas.

Describe the principle of work of the 1st embodiment ionic medium display device of the present invention in detail below with reference to Fig. 5.

Shown in Fig. 5 institute, the 1st embodiment ionic medium display device of the present invention is divided into following drive: the baseline of all unit of initialization (RP), select discharge cell address period (AP), keep (SP) during the keeping of discharge of selected cell.

Below to during each not Shu Ru voltage and function thereof be elaborated.

At first, start the startup acclivity pulse (PR) of importing the positive polarity gradient between the rising stage in (SU) on all scan electrodes (Y1 to Yn) simultaneously at baseline (RP).Such startup acclivity pulse (PR) is start rising waveform a kind of, and its form can be various waveform.This starts the faint dark discharge (Dark Discharge) of the interior generation of discharge cell that acclivity pulse (PR) causes whole image.This startup rising discharge causes addressing electrode (X1 to Xm) and top and bottom to keep electrode group, and (ZT ZB) upward accumulates positive polarity wall electric charge, and scan electrode (Y1 to Yn) is the wall electric charge of accumulation negative polarity upward.

Then between decrement phase (SD); Keep when input positive polarity is kept the bias-voltage of voltage (Vs) grade in the electrode group (ZT) on top when inputting simultaneously the decline slope pulse (NR) of negative polarity gradient in all scan electrodes (Y1 to Yn), and the positive polarity wall electric charge of addressing electrode (X1 to Xm) is remained stationary but kept the negative polarity electric charge that will be accumulated in the volume of scan electrode (Y1 to Yn/2) when certain positive polarity wall electric charge of keeping electrode group (ZT) in top is eliminated in discharge between electrode group (ZT) and the scan electrode (Y1 to Yn/2) by top and give top and keep electrode group (ZT) and scan electrode (Y1 to Yn/2).

This discharge that descends makes residual wall electric charge satisfy address discharge to stablize and carry out the unit in.

And, when the slope pulse was controlled in the decline of input negative polarity gradient in the bottom was kept behind the bias-voltage of keeping voltage (Vs) grade of input positive polarity in the electrode group (ZB) between decrement phase during the latter half of part of (SD), keep the middle same principle wall CHARGE DISTRIBUTION of electrode group (ZT) with top and obtain certain adjustment, but scan electrode (Yn/2+1 to Yn) and bottom are kept strength of discharge between the electrode group (ZB) and are kept relative minimizing of strength of discharge between the electrode group (ZT) than scan electrode (Y1 to Yn/2) and top, so it is residual more to be accumulated in the negative polarity electric charge of scan electrode (Yn/2+1 to Yn) between the rising stage in (SU).The reason of as above adjusting the wall quantity of electric charge is the loss of the scanning process mesospore electric charge that carries out in order in the address period after the early cut-off, that is, and and the instability of the address discharge that the latter half of mesospore loss of charge of address period causes.Simultaneously, such decline slope pulse (NR) is an example of falling waveform, can select the multiple waveform of decline form for use.

Potential difference (PD) between electrode group (ZB) and the scan electrode (Yn/2+1 to Yn) is kept in the method minimizing bottom that the suggestion of the 1st decline control part (46) is kept electrode group (ZB) with the bottom of floating.Reduce the bottom keep potential difference (PD) method between electrode group (ZB) and the scan electrode (Yn/2+1 to Yn) adopt the bottom of floating keep electrode group (ZB) method can under the situation of not appending other loop effectively the minimizing bottom keep potential difference (PD) between electrode group (ZB) and the scan electrode (Yn/2+1 to Yn), can adjust the intensity of the decline discharge between the electrode corresponding latter half of in the scanning sequency, therefore can reduce the manufacturing expense of whole plasma display system.

Simultaneously, (Vw) suggestion is (Vy) bigger than the minimum value of the scanning impulse (SCNP) that is input to scan electrode (Y1 to Yn) in the address period (AP) for the minimum value of decline slope pulse (NR).Make the minimum value of decline slope pulse (NR) (Vw) (suitably eliminate when Vy) intensity that can adjust the discharge that descends improves the contrast-response characteristic of plasma display system and start the wall quantity of electric charge that forms in (SU) between the rising stage, the address discharge after preparing like this greater than the minimum value of the scanning impulse (SCNP) that is input to scan electrode (Y1 to Yn) in the address period (AP).

Keep minimum value (Vw) state in (Δ T1) during the latter half of part of decline slope pulse (NR) suggestion between decrement phase (SD).(Vw) state can make wall CHARGE DISTRIBUTION stabilization more to make decline slope pulse (NR) keep minimum value in (Δ T1) like this during certain.

Decline slope pulse (NR) maintain minimum value (Vw) state during suggestion set between whole decrement phase more than 0.1 times below 0.5 times.Adjust like this keep minimum value (Vw) during wall CHARGE DISTRIBUTION stabilization more when suitable decline discharge can take place

Then, at address period (AP), the data pulse (DP) that rises to the data voltage (Va) of positive polarity to addressing electrode (X1 to Xm) input from ground connection GND drops to scanning voltage (scanning impulse Vy) (SCNP) of negative polarity simultaneously from scan reference voltage (Vsc) to scan electrode (Y1 to Yn) input, at this moment, addressing electrode (X1 to Xm) that the wall electric charge of formation causes in voltage difference between addressing electrode (X1 to Xm) and the scan electrode (Y1 to Yn) and the baseline (RP) and the wall electric charge between the scan electrode (Y1 to Yn) increase and the generation address discharge.

Simultaneously, top and bottom keep electrode group (ZT, ZB) bias-voltage of keeping voltage (Vs) grade of input positive polarity reduce in the address period (AP) with scan electrode (Y1 to Yn) between voltage and assurance and scan electrode (Y1 to Yn) between do not misplace.

Then, during keeping in (SP) to scan electrode (Y1 to Yn) be divided into top and bottom keep electrode group (ZT, ZB) keep electrode (Z) alternately input from ground connection GND rise to keep voltage (Vs) keep pulse (SUSP).During address discharge the wall voltage of selecteed unit in the unit with keep that pulse (SUSP) increases and every input is kept electrode group (ZT with top and bottom being divided into scan electrode (Y1 to Yn) when keeping pulse (SUSP), keeping between the electrode (Z) ZB) kept discharge promptly, shows discharge.

As above, finish the driving process of the present invention's the 1st embodiment ionic medium display device in the frame subcycle.

The 1st embodiment ionic medium display device of the present invention as described above, descending according to the scanning sequency adjustment makes address discharge more stable when the intensity of discharge improves contrast-response characteristic, guarantees whole driving locking.And the concrete means of the intensity of decline discharge are adjusted in conduct, employing will be kept electrode and be divided into according to scanning sequency, the bottom is kept electrode and the bottom is kept the mode of the unsteady certain hour of electrode group, therefore special voltage source or circuit element need not be appended, the manufacturing expense of plasma display system can be reduced.

Fig. 6 is the synoptic diagram of the present invention's the 2nd embodiment ionic medium display device.

As shown in Figure 6, the 2nd embodiment ionic medium display device of the present invention comprises with the lower part: in baseline, address period and in during keeping, be divided into top and electrode group (ZT is kept in the bottom according to addressing electrode (X1 to Xm), scan electrode (Y1 to Yn) and scanning sequency, ZB), the electrode (Z) of keeping that connects not jointly with electrode group is gone up the plasma panel (600) that the certain driving pulse of input produces the gas discharge of discharge space and shows portrait; Panel (not shown) is gone up the data-driven portion (62) that the addressing electrode (X1 to Xm) that forms provides input backward; The scanning driving part of driven sweep electrode (Y1 to Yn) (63); Driving top is kept the top of electrode group (ZT) and is kept drive division (64A); The driving bottom is kept the bottom of electrode group (ZB) and is kept drive division (64B); Control each drive division (62,63,64A, timing control part (61) 64B); (62,63,64A 64B) provides the driving voltage generating unit (65) of driving voltage to each drive division; Reduce the 2nd decline control part (66) of keeping potential difference (PD) between electrode group (ZB) and the scan electrode (Y1 to Yn) in during the part of (Y1 to Yn) input falling waveform in the scan electrode between decrement phase.

Below describe the function and the effect of each inscape of the present invention the 2 embodiment ionic medium display device in detail.

At first, in the plasma panel (600), front panel (not shown) and rear panel (not shown) are combined in the discharge space both sides that comprise inert gas at a certain distance, most electrodes on the front panel, for example scan electrode (Y1 to Yn) and keep electrode (Z) and form with matching form.At this moment keep electrode (Z) and be divided into according to scanning sequency that electrode group (ZT) is kept on top and electrode group (ZB) is kept in the bottom, respectively keep electrode group and connect not jointly with electrode group.Simultaneously, on the rear panel, (ZT, ZB) direction of intersecting forms addressing electrode (X1 to Xm) to keep electrode group with scan electrode (Y1 to Yn) and top and the bottom.

Data-driven portion (62) by after γ revisal and error diffusion, provides the data of Mapping by not shown contrary γ revisal loop and error diffusion circuit etc. to the frame subcycle of prior setting through frame subcycle Mapping loop.This data-driven portion (62) is provided to addressing electrode (X1 to Xm) with these data after choosing data and locking under the control of timing control part (61).

Scanning driving part (63) under the control of timing control part (61), input simultaneously comprise in the baseline for the initialization whole image and the initial waveform of the rising waveform that rises gradually that provides to all scan electrodes (Y1 to Yn) and the falling waveform that descends gradually.

In the address period of scanning driving part (63) after initial waveform is provided to scan electrode (Y1 to Yn), in order to select sweep trace, the scan reference voltage (Vsc) to scan electrode (Y1 to Yn) input positive polarity reaches scanning voltage (scanning impulse Vy) that is begun to drop to negative polarity by scan reference voltage (Vsc) in order.

Simultaneously, scanning driving part (63) is kept pulse to scan electrode (Y1 to Yn) input in during keeping and is made the unit of selection address period in keep discharge.

Drive division (64A) is kept on top and drive division (64B) is kept under the control of timing control part (61) in the bottom, between decrement phase and in the address period, provide the bias voltage of keeping voltage (Vs) grade that has positive polarity to be provided to that electrode group (ZT) is kept on each top and keep in the electrode group (ZB) bottom, in during the latter half of part between decrement phase, will be according to the 1st and the 2nd decline control signal (T1 of the 2nd decline control part (66) input, T2) reduce top and the bottom and keep electrode group (ZT, ZB) and the decline control waveform of the potential difference (PD) between the scan electrode (Y1 to Yn) be provided to top and the bottom keep electrode group (ZT, ZB).And, in address period, the bias voltage of keeping voltage (Vs) grade of positive polarity offered top and keep after electrode group (ZT) and bottom keep electrode group (ZB), during keeping, will keep pulse and offer that electrode group (ZT) is kept on top and electrode group (ZB) is kept in the bottom with scanning driving part (63) alternating movement.

The 2nd decline control part (26) between decrement phase in during the part of scan electrode (Y1 to Yn) input falling waveform in, keeping electrode group (ZT) and bottom to top keeps electrode group (ZB) input decline top and keeps the 1st and the 2nd decline control signal of electrode group (ZT) and bottom keeping the decline control waveform of potential difference (PD) between electrode group (ZB) and the scan electrode (Y1 to Yn) (T1 T2) is input to that drive division (64A) is kept on top and drive division (64B) is kept in the bottom.

Timing control part (61) generates the timing control signal (CTRX that each drive division needs after receiving the vertical/horizontal signal same period, CTRY, CTRZ), and with this timing control signal (CTRX, CTRY, CTRZ) be provided to corresponding drive division (62,63,64A, 64B) control each drive division (62,63,64A, 64B).The timing control signal (CTRX) that input is gone up by data-driven portion (62) comprises the clock of choosing of choosing data, lock control signal, the switch controlling signal of the ON/OFF time of energy recovery circuit and controlling and driving switch block.Scanning driving part (63) is gone up the switch controlling signal that the timing control signal of importing (CTRY) comprises the ON/OFF time of interior energy recovery circuit of gated sweep drive division (63) and driving switch parts.Drive division is kept in top and bottom, and (64A, 64B) the timing control signal (CTRZ) that goes up input comprises control top and drive division (64A, 64B) switch controlling signal of the ON/OFF time of Nei energy recovery circuit and driving switch parts are kept in the bottom.

Driving voltage generating unit (65) produce comprise keep voltage (Vs), scan reference voltage (Vsc), data voltage (Va), drop-out voltage (Vw), scanning voltage (Vy) etc. each drive division (62,63,64A, 64B) Bi Yao various driving voltages.Such driving voltage can be according to the formation or the discharge cell structural change of discharge gas.

Describe the principle of work of the 2nd embodiment ionic medium display device of the present invention in detail below with reference to Fig. 7 and Fig. 8.

As shown in Figure 7, the 2nd embodiment ionic medium display device of the present invention is divided into following drive: the baseline of all unit of initialization (RP), select discharge cell address period (AP), keep (SP) during the keeping of discharge of selected cell.

Below to during each not Shu Ru voltage and function thereof be elaborated.

At first, start the startup acclivity pulse (PR) of importing the positive polarity gradient between the rising stage in (SU) on all scan electrodes (Y1 to Yn) simultaneously at baseline (RP).Such startup acclivity pulse (PR) is start rising waveform a kind of, and its form can be various rising waveform.This starts the faint dark discharge (Dark Discharge) of the interior generation of discharge cell that acclivity pulse (PR) causes whole image.This startup rising discharge causes addressing electrode (X1 to Xm) and top and bottom to keep electrode group, and (ZT ZB) upward accumulates positive polarity wall electric charge, and scan electrode (Y1 to Yn) is the wall electric charge of accumulation negative polarity upward.

Then between decrement phase (SD), the bias-voltage that input positive polarity in the electrode group (ZT) is kept voltage (Vs) grade is kept on top when importing the decline slope pulse (NR) of negative polarity gradient in all scan electrodes (Y1 to Yn) simultaneously, (Δ t1 during the latter half of part of (SD) between decrement phase, Δ t2) in during the decline control slope pulse of input negative polarity gradient, the positive polarity wall electric charge of addressing electrode (X1 to Xm) is remained stationary but by keeping between electrode group (ZT) and the scan electrode (Y1 to Yn/2) and the bottom is kept the negative polarity electric charge that will be accumulated in the volume of scan electrode (Y1 to Yn) when certain positive polarity wall electric charge of electrode group (ZT) and bottom keeping electrode group (ZB) is kept on discharge elimination top between electrode group (ZB) and the scan electrode (Yn/2+1 to Yn) and given top and keep electrode group (ZT) in top, electrode group (ZB) and scan electrode (Y1 to Yn) are kept in the bottom.

This discharge that descends makes residual wall electric charge satisfy address discharge to stablize and carry out the unit in.Such decline slope pulse (NR) simultaneously is an example of falling waveform, and the form of decline can be selected multiple waveform.

The 2nd decline control part (66) suggestion is kept electrode group with the top and the bottom of floating, and (ZT, method ZB) reduces top and the bottom and keeps electrode group (ZT, potential difference (PD) ZB) and between the scan electrode (Y1 to Yn).Reduce top and the bottom and keep electrode group (Z T, ZB) and the top and the bottom of adopt floating of the potential difference (PD) method between the scan electrode (Y1 to Yn) keep electrode group (ZT, ZB) method can effectively reduce the bottom and keep electrode group (ZT under the situation of not appending other loop, ZB) and the potential difference (PD) between the scan electrode (Y1 to Yn), can adjust the intensity of the decline discharge between the electrode corresponding latter half of in the scanning sequency, therefore can reduce the manufacturing expense of whole plasma display system.

Unsteady bottom keep electrode group (ZB) during suggestion than unsteady top keep electrode group (ZT) during grow.To float like this bottom keep electrode group (ZB) during be arranged to than unsteady top keep electrode group (ZT) during can be when long according to the descend intensity of discharge of scanning sequency adjustment.The drive waveforms of input in being described in detail between decrement phase with reference to figure 8.

As shown in Figure 8, the bottom keep electrode group (ZB) float time durations (Δ t2) be arranged to than top keep electrode group (ZT) between the float period (Δ t1) long, the bottom can be kept the minimum value (V that electrode group (ZB) is gone up the decline control slope pulse of input _ZB1) be adjusted to than top and keep the minimum value (V that electrode group (ZT) is gone up the decline control slope pulse of input _ZT1) little, therefore can according to the scanning sequency adjustment descend discharge intensity and make that address discharge is stable to carry out.

Potential difference (PD) between electrode group (ZB) and the scan electrode (Yn/2+1 to Yn) is kept in the method minimizing bottom that the suggestion of the 1st decline control part (46) is kept electrode group (ZB) with the bottom of floating.Reduce the bottom keep potential difference (PD) method between electrode group (ZB) and the scan electrode (Yn/2+1 to Yn) adopt the bottom of floating keep electrode group (ZB) method can under the situation of not appending other loop effectively the minimizing bottom keep potential difference (PD) between electrode group (ZB) and the scan electrode (Yn/2+1 to Yn), can adjust the intensity of the decline discharge between the electrode corresponding latter half of in the scanning sequency, therefore can reduce the manufacturing expense of whole plasma display system.

Simultaneously, (it is (Vy) identical Vy) to be input to the minimum value of scanning impulse (SCNP) of scan electrode (Y1 to Yn) in suggestion and the address period (AP) for the minimum value of decline slope pulse (NR).Make the minimum value of decline slope pulse (NR) (Vy) with in the address period (AP) be input to the minimum value of the scanning impulse (SCNP) of scan electrode (Y1 to Yn) (Vy) the identical service voltage source that can use scanning impulse (SCNP) and decline slope pulse (NR) jointly reduces the manufacturing expense of plasma display system like this.

Keep minimum value (Vy) state in (Δ T2) during the latter half of part of decline slope pulse (NR) suggestion between decrement phase (SD).(Vy) state can make wall CHARGE DISTRIBUTION stabilization more to make decline slope pulse (NR) keep minimum value in (Δ T2) like this during certain.

Decline slope pulse (NR) maintain minimum value (Vy) state during (Δ T2) suggestion set between whole decrement phase more than 0.1 times below 0.5 times.Adjust like this keep minimum value (Vy) during (Δ T2) wall CHARGE DISTRIBUTION stabilization more when suitable decline discharge can take place

Then, at address period (AP), the data pulse (DP) that rises to the data voltage (Va) of positive polarity to addressing electrode (X1 to Xm) input from ground connection GND drops to scanning voltage (scanning impulse Vy) (SCNP) of negative polarity simultaneously from scan reference voltage (Vsc) to scan electrode (Y1 to Yn) input, at this moment, addressing electrode (X1 to Xm) that the wall electric charge of formation causes in voltage difference between addressing electrode (X1 to Xm) and the scan electrode (Y1 to Yn) and the baseline (RP) and the wall electric charge between the scan electrode (Y1 to Yn) increase and the generation address discharge.

Simultaneously, top and bottom keep electrode group (ZT, ZB) bias-voltage of keeping voltage (Vs) grade of input positive polarity reduce in the address period (AP) with scan electrode (Y1 to Yn) between voltage and assurance and scan electrode (Y1 to Yn) between do not misplace.

Then, during keeping in (SP) to scan electrode (Y1 to Yn) be divided into top and bottom keep electrode group (ZT, ZB) keep electrode (Z) alternately input from ground connection GND rise to keep voltage (Vs) keep pulse (SUSP).During address discharge the wall voltage of selecteed unit in the unit with keep that pulse (SUSP) increases and every input is kept electrode group (ZT with top and bottom being divided into scan electrode (Y1 to Yn) when keeping pulse (SUSP), keeping between the electrode (Z) ZB) kept discharge promptly, shows discharge.

As above, finish the driving process of the present invention's the 2nd embodiment ionic medium display device in the frame subcycle.

The 2nd embodiment ionic medium display device of the present invention as described above, descending according to the scanning sequency adjustment makes address discharge more stable when the intensity of discharge improves contrast-response characteristic, guarantees whole driving locking.And the concrete means of the intensity of decline discharge are adjusted in conduct, employing will be kept electrode and be divided into according to scanning sequency, the bottom is kept electrode and the bottom is kept the mode of the unsteady certain hour of electrode group, therefore special voltage source or circuit element need not be appended, the manufacturing expense of plasma display system can be reduced.

Below with reference to Fig. 5 the driving method of the 1st embodiment ionic medium display device of the present invention is elaborated.

As shown in Figure 5, the driving method of the 1st embodiment ionic medium display device of the present invention is to drive during following being divided into during whole: the baseline of all unit of initialization (RP), select discharge cell address period (AP), keep (SP) during the keeping of discharge of selected cell.

Below to during each not Shu Ru voltage and function thereof be elaborated.

At first, start the startup acclivity pulse (PR) of importing the positive polarity gradient between the rising stage in (SU) on all scan electrodes (Y1 to Yn) simultaneously at baseline (RP).Such startup acclivity pulse (PR) is start rising waveform a kind of, and its form can be various waveform.This starts the faint dark discharge (Dark Discharge) of the interior generation of discharge cell that acclivity pulse (PR) causes whole image.This startup rising discharge causes addressing electrode (X1 to Xm) and top and bottom to keep electrode group, and (ZT ZB) upward accumulates positive polarity wall electric charge, and scan electrode (Y1 to Yn) is the wall electric charge of accumulation negative polarity upward.

Then between decrement phase (SD); Keep when input positive polarity is kept the bias-voltage of voltage (Vs) grade in the electrode group (ZT) on top when inputting simultaneously the decline slope pulse (NR) of negative polarity gradient in all scan electrodes (Y1 to Yn), and the positive polarity wall electric charge of addressing electrode (X1 to Xm) is remained stationary but kept the negative polarity electric charge that will be accumulated in the volume of scan electrode (Y1 to Yn/2) when certain positive polarity wall electric charge of keeping electrode group (ZT) in top is eliminated in discharge between electrode group (ZT) and the scan electrode (Y1 to Yn/2) by top and give top and keep electrode group (ZT) and scan electrode (Y1 to Yn/2).

This discharge that descends makes residual wall electric charge satisfy address discharge to stablize and carry out the unit in.

And, when the slope pulse was controlled in the decline of input negative polarity gradient in the bottom was kept behind the bias-voltage of keeping voltage (Vs) grade of input positive polarity in the electrode group (ZB) between decrement phase during the latter half of part of (SD), keep the middle same principle wall CHARGE DISTRIBUTION of electrode group (ZT) with top and obtain certain adjustment, but scan electrode (Yn/2+1 to Yn) and bottom are kept strength of discharge between the electrode group (ZB) and are kept relative minimizing of strength of discharge between the electrode group (ZT) than scan electrode (Y1 to Yn/2) and top, so it is residual more to be accumulated in the negative polarity electric charge of scan electrode (Yn/2+1 to Yn) between the rising stage in (SU).The reason of as above adjusting the wall quantity of electric charge is the loss of the scanning process mesospore electric charge that carries out in order in the address period after the early cut-off, that is, and and the instability of the address discharge that the latter half of mesospore loss of charge of address period causes.Simultaneously, such decline slope pulse (NR) is an example of falling waveform, can select the multiple waveform of decline form for use.

The suggestion bottom of floating was kept electrode group (ZB) and is reduced the bottom and keep potential difference (PD) between electrode group (ZB) and the scan electrode (Yn/2+1 to Yn) in scan electrode (Yn/2+1 to Yn) was gone up during the part of input decline slope pulse (NR).Reduce the bottom keep potential difference (PD) method between electrode group (ZB) and the scan electrode (Yn/2+1 to Yn) adopt the bottom of floating keep electrode group (ZB) method can under the situation of not appending other loop effectively the minimizing bottom keep potential difference (PD) between electrode group (ZB) and the scan electrode (Yn/2+1 to Yn), can adjust the intensity of the decline discharge between the electrode corresponding latter half of in the scanning sequency, therefore can reduce the manufacturing expense of whole plasma display system.

Simultaneously, (Vw) suggestion is (Vy) bigger than the minimum value of the scanning impulse (SCNP) that is input to scan electrode (Y1 to Yn) in the address period (AP) for the minimum value of decline slope pulse (NR).Make the minimum value of decline slope pulse (NR) (Vw) (suitably eliminate when Vy) intensity that can adjust the discharge that descends improves the contrast-response characteristic of plasma display system and start the wall quantity of electric charge that forms in (SU) between the rising stage, the address discharge after preparing like this greater than the minimum value of the scanning impulse (SCNP) that is input to scan electrode (Y1 to Yn) in the address period (AP).

Keep minimum value (Vw) state in (Δ T1) during the latter half of part of decline slope pulse (NR) suggestion between decrement phase (SD).(Vw) state can make wall CHARGE DISTRIBUTION stabilization more to make decline slope pulse (NR) keep minimum value in (Δ T1) like this during certain.

Decline slope pulse (NR) maintain minimum value (Vw) state during suggestion set between whole decrement phase more than 0.1 times below 0.5 times.Adjust like this keep minimum value (Vw) during wall CHARGE DISTRIBUTION stabilization more when suitable decline discharge can take place

Then, at address period (AP), the data pulse (DP) that rises to the data voltage (Va) of positive polarity to addressing electrode (X1 to Xm) input from ground connection GND drops to scanning voltage (scanning impulse Vy) (SCNP) of negative polarity simultaneously from scan reference voltage (Vsc) to scan electrode (Y1 to Yn) input, at this moment, addressing electrode (X1 to Xm) that the wall electric charge of formation causes in voltage difference between addressing electrode (X1 to Xm) and the scan electrode (Y1 to Yn) and the baseline (RP) and the wall electric charge between the scan electrode (Y1 to Yn) increase and the generation address discharge.

Simultaneously, top and bottom keep electrode group (ZT, ZB) bias-voltage of keeping voltage (Vs) grade of input positive polarity reduce in the address period (AP) with scan electrode (Y1 to Yn) between voltage and assurance and scan electrode (Y1 to Yn) between do not misplace.

Then, during keeping in (SP) to scan electrode (Y1 to Yn) be divided into top and bottom keep electrode group (ZT, ZB) keep electrode (Z) alternately input from ground connection GND rise to keep voltage (Vs) keep pulse (SUSP).During address discharge the wall voltage of selecteed unit in the unit with keep that pulse (SUSP) increases and every input is kept electrode group (ZT with top and bottom being divided into scan electrode (Y1 to Yn) when keeping pulse (SUSP), keeping between the electrode (Z) ZB) kept discharge promptly, shows discharge.

As above, finish the driving process of the present invention's the 1st embodiment ionic medium display-apparatus driving method in the frame subcycle.

The driving method of the 1st embodiment ionic medium display device of the present invention as described above, descending according to the scanning sequency adjustment makes address discharge more stable when the intensity of discharge improves contrast-response characteristic, guarantees whole driving locking.And the concrete means of the intensity of decline discharge are adjusted in conduct, employing will be kept electrode and be divided into according to scanning sequency, the bottom is kept electrode and the bottom is kept the mode of the unsteady certain hour of electrode group, therefore special voltage source or circuit element need not be appended, the manufacturing expense of plasma display system can be reduced.

Describe the driving method of the 2nd embodiment ionic medium display device of the present invention in detail below with reference to Fig. 7 and Fig. 8.

As shown in Figure 7, the driving method of the 2nd embodiment ionic medium display device of the present invention is divided into following drive: the baseline of all unit of initialization (RP), select discharge cell address period (AP), keep (SP) during the keeping of discharge of selected cell.

Below to during each not Shu Ru voltage and function thereof be elaborated.

At first, start the startup acclivity pulse (PR) of importing the positive polarity gradient between the rising stage in (SU) on all scan electrodes (Y1 to Yn) simultaneously at baseline (RP).Such startup acclivity pulse (PR) is start rising waveform a kind of, and its form can be various rising waveform.This starts the faint dark discharge (Dark Discharge) of the interior generation of discharge cell that acclivity pulse (PR) causes whole image.This startup rising discharge causes addressing electrode (X1 to Xm) and top and bottom to keep electrode group, and (ZT ZB) upward accumulates positive polarity wall electric charge, and scan electrode (Y1 to Yn) is the wall electric charge of accumulation negative polarity upward.

Then between decrement phase (SD), the bias-voltage that input positive polarity in the electrode group (ZT) is kept voltage (Vs) grade is kept on top when importing the decline slope pulse (NR) of negative polarity gradient in all scan electrodes (Y1 to Yn) simultaneously, (Δ t1 during the latter half of part of (SD) between decrement phase, Δ t2) in during the decline control slope pulse of input negative polarity gradient, the positive polarity wall electric charge of addressing electrode (X1 to Xm) is remained stationary but by keeping between electrode group (ZT) and the scan electrode (Y1 to Yn/2) and the bottom is kept the negative polarity electric charge that will be accumulated in the volume of scan electrode (Y1 to Yn) when certain positive polarity wall electric charge of electrode group (ZT) and bottom keeping electrode group (ZB) is kept on discharge elimination top between electrode group (ZB) and the scan electrode (Yn/2+1 to Yn) and given top and keep electrode group (ZT) in top, electrode group (ZB) and scan electrode (Y1 to Yn) are kept in the bottom.

This discharge that descends makes residual wall electric charge satisfy address discharge to stablize and carry out the unit in.Such decline slope pulse (NR) simultaneously is an example of falling waveform, and the form of decline can be selected multiple waveform.

Suggestion was kept electrode group with the top and the bottom of floating (ZT, method ZB) is reduced top and the bottom and keeps electrode group (ZT, potential difference (PD) ZB) and between the scan electrode (Y1 to Yn) in scan electrode (Y1 to Yn) was gone up during the part of input decline slope pulse (NR).Reduce top and the bottom and keep electrode group (ZT, ZB) and the top and the bottom of adopt floating of the potential difference (PD) method between the scan electrode (Y1 to Yn) keep electrode group (ZT, ZB) method can effectively reduce top and the bottom and keep electrode group (ZT under the situation of not appending other loop, ZB) and the potential difference (PD) between the scan electrode (Y1 to Yn), can adjust the intensity of the decline discharge between the electrode corresponding latter half of in the scanning sequency, therefore can reduce the manufacturing expense of whole plasma display system.

Unsteady bottom keep electrode group (ZB) during suggestion than unsteady top keep electrode group (ZT) during grow.To float like this bottom keep electrode group (ZB) during be arranged to than unsteady top keep electrode group (ZT) during can be when long according to the descend intensity of discharge of scanning sequency adjustment.The drive waveforms of input in being described in detail between decrement phase with reference to figure 8.It is as follows to describe this process in detail with reference to the Fig. 8 that shows the drive waveforms of interior input between decrement phase.

As shown in Figure 8, the bottom keep electrode group (ZB) float time durations (Δ t2) be arranged to than top keep electrode group (ZT) between the float period (Δ t1) long, the bottom can be kept the minimum value (V that electrode group (ZB) is gone up the decline control slope pulse of input _ZB1) be adjusted to than top and keep the minimum value (V that electrode group (ZT) is gone up the decline control slope pulse of input _ZT1) little, therefore can according to the scanning sequency adjustment descend discharge intensity and make that address discharge is stable to carry out.

Simultaneously, (it is (Vy) identical Vy) to be input to the minimum value of scanning impulse (SCNP) of scan electrode (Y1 to Yn) in suggestion and the address period (AP) for the minimum value of decline slope pulse (NR).Make the minimum value of decline slope pulse (NR) (Vy) with in the address period (AP) be input to the minimum value of the scanning impulse (SCNP) of scan electrode (Y1 to Yn) (Vy) the identical service voltage source that can use scanning impulse (SCNP) and decline slope pulse (NR) jointly reduces the manufacturing expense of plasma display system like this.

Keep minimum value (Vy) state in (Δ T2) during the latter half of part of decline slope pulse (NR) suggestion between decrement phase (SD).(Vy) state can make wall CHARGE DISTRIBUTION stabilization more to make decline slope pulse (NR) keep minimum value in (Δ T2) like this during certain.

Decline slope pulse (NR) maintain minimum value (Vy) state during (Δ T2) suggestion set between whole decrement phase more than 0.1 times below 0.5 times.Adjust like this keep minimum value (Vy) during (Δ T2) wall CHARGE DISTRIBUTION stabilization more when suitable decline discharge can take place

Then, at address period (AP), the data pulse (DP) that rises to the data voltage (Va) of positive polarity to addressing electrode (X1 to Xm) input from ground connection GND drops to scanning voltage (scanning impulse Vy) (SCNP) of negative polarity simultaneously from scan reference voltage (Vsc) to scan electrode (Y1 to Yn) input, at this moment, addressing electrode (X1 to Xm) that the wall electric charge of formation causes in voltage difference between addressing electrode (X1 to Xm) and the scan electrode (Y1 to Yn) and the baseline (RP) and the wall electric charge between the scan electrode (Y1 to Yn) increase and the generation address discharge.

Simultaneously, top and bottom keep electrode group (ZT, ZB) bias voltage of keeping voltage (Vs) grade of input positive polarity reduce in the address period (AP) with scan electrode (Y1 to Yn) between voltage and assurance and scan electrode (Y1 to Yn) between do not misplace.

Then, during keeping in (SP) to scan electrode (Y1 to Yn) be divided into top and bottom keep electrode group (ZT, ZB) keep electrode (Z) alternately input from ground connection GND rise to keep voltage (Vs) keep pulse (SUSP).During address discharge the wall voltage of selecteed unit in the unit with keep that pulse (SUSP) increases and every input is kept electrode group (ZT with top and bottom being divided into scan electrode (Y1 to Yn) when keeping pulse (SUSP), keeping between the electrode (Z) ZB) kept discharge promptly, shows discharge.

As above, finish the driving process of the present invention's the 2nd embodiment ionic medium display-apparatus driving method in the frame subcycle.

The driving method of the 2nd embodiment ionic medium display device of the present invention as described above, descending according to the scanning sequency adjustment makes address discharge more stable when the intensity of discharge improves contrast-response characteristic, guarantees whole driving locking.And the concrete means of the intensity of decline discharge are adjusted in conduct, employing will be kept electrode and be divided into according to scanning sequency, the bottom is kept electrode and the bottom is kept the mode of the unsteady certain hour of electrode group, therefore special voltage source or circuit element need not be appended, the manufacturing expense of plasma display system can be reduced.

In sum, technology of the present invention constitutes and can technological thought of the present invention or feature do not changed and be used with other concrete forms by the dealer that works as of the technical field under the present invention.

But embodiment set forth above does not represent all aspects of the present invention, the present invention is not limited only to the foregoing description, scope of the present invention is decided by the concrete patent request scope that proposes later, all should belong to scope of the present invention from meaning, scope and all changes of equivalent concepts derivation thereof of request scope or the form of change.

The invention effect: as described above, ionic medium display unit of the present invention and driving method thereof are suitable according to scanning When improving contrast-response characteristic, the intensity of order adjustment decline discharge with the address discharge stabilisation, guarantees whole driving Moving locking. And, by the intensity of the discharge that descends, will keep electrode and be divided into by scanning sequency and keep electrode group, And use and will keep the float method of certain hour of electrode group, therefore do not need to append special voltage source or return Circuit units etc. can reduce the manufacturing expense of plasma display system.

Claims (22)

1, plasma display system comprises with the lower part: be divided into the common a plurality of plasma panels of keeping electrode that are connected that top and bottom are kept electrode group and comprised with electrode group according to a plurality of scan electrodes and scanning sequency; Each drive division of drive electrode; During the part of scan electrode input falling waveform, reduce the 1st decline control part that potential difference (PD) between electrode group and the scan electrode is kept in the bottom in it is characterized in that between decrement phase.

2, according to the described plasma display system of claim 1, it is characterized in that the above-mentioned above-mentioned bottom of floating keeps electrode group voltage regulation 1 decline control part, reduce above-mentioned bottom and keep potential difference (PD) between electrode group and the above-mentioned scan electrode.

3,, it is characterized in that the minimum value of above-mentioned falling waveform is bigger than the minimum value of the scanning impulse that is input to above-mentioned scan electrode in the address period according to claim 1 or 2 described plasma display systems.

4,, it is characterized in that keeping minimum state in above-mentioned falling waveform is during certain according to the described plasma display system of claim 3.

5, according to the described plasma display system of claim 4, it is characterized in that above-mentioned during certain be between above-mentioned decrement phase more than 0.1 times, below 0.5 times.

6, plasma display system comprises with the lower part: be divided into top and the bottom is kept electrode group and do not comprised the common a plurality of plasma panels of keeping electrode that are connected with electrode group according to a plurality of scan electrodes and scanning sequency; Each drive division of drive electrode; During the part of scan electrode input falling waveform, reduce the 2nd decline control part that potential difference (PD) between electrode group and the scan electrode is kept in top and the bottom between decrement phase.

7,, it is characterized in that above-mentioned the 2nd decline control part above-mentioned electrode group voltage of keeping that floats reduces above-mentioned top and the bottom and keeps potential difference (PD) between electrode group and the above-mentioned scan electrode according to the described plasma display system of claim 6.

8, according to the described plasma display system of claim 7, it is characterized in that keeping the above-mentioned top of unsteady time ratio of electrode group in above-mentioned bottom, to keep unsteady time of electrode group long.

9, according to claim 6 or 8 described plasma display systems, the minimum value of scanning impulse that is input to above-mentioned scan electrode in the minimum value that it is characterized in that above-mentioned falling waveform and the address period is identical.

10,, it is characterized in that keeping minimum state in above-mentioned falling waveform is during certain according to the described plasma display system of claim 9.

11, according to the described plasma display system of claim 10, it is characterized in that above-mentioned during certain be between above-mentioned decrement phase more than 0.1 times, below 0.5 times.

12, the driving method of plasma display system, being divided into top and bottom according to a plurality of scan electrodes and scanning sequency keeps electrode group and comprises with above-mentioned electrode group with a plurality of electrodes of keeping that are connected, it is characterized in that it comprises, between decrement phase in during the part of above-mentioned scan electrode input falling waveform in the above-mentioned bottom of minimizing stage of keeping the potential difference (PD) between electrode group and the above-mentioned scan electrode.

13, according to the driving method of the described plasma display system of claim 12, in it is characterized in that during the part of above-mentioned scan electrode input falling waveform, the above-mentioned electrode group of keeping that floats reduces above-mentioned bottom and keeps potential difference (PD) between electrode group and the above-mentioned scan electrode.

14,, it is characterized in that the minimum value of above-mentioned falling waveform is bigger than the minimum value of the scanning impulse that is input to above-mentioned scan electrode in the address period according to the driving method of claim 12 or 13 described plasma display systems.

15,, it is characterized in that keeping minimum state in above-mentioned falling waveform is during certain according to the driving method of the described plasma display system of claim 14.

16, according to the driving method of the described plasma display system of claim 15, it is characterized in that above-mentioned during certain be between above-mentioned decrement phase more than 0.1 times, below 0.5 times.

17, the driving method of plasma display system, being divided into top and bottom according to a plurality of scan electrodes and scanning sequency keeps electrode group and comprises a plurality of electrodes of keeping that are not connected jointly with above-mentioned electrode group, it is characterized in that it comprises, between decrement phase in during the part of above-mentioned scan electrode input falling waveform in the above-mentioned stage of keeping the potential difference (PD) between electrode group and the above-mentioned scan electrode of minimizing.

18, according to the driving method of the described plasma display system of claim 17, in it is characterized in that during the part of above-mentioned scan electrode input falling waveform, the above-mentioned electrode group voltage of keeping that floats reduces the above-mentioned potential difference (PD) between electrode group and the above-mentioned scan electrode of keeping.

19, according to the driving method of the described plasma display system of claim 18, it is characterized in that keeping the above-mentioned top of unsteady time ratio of electrode group in above-mentioned bottom, to keep unsteady time of electrode group long.

20, according to the driving method of claim 17 or 19 described plasma display systems, the minimum value of scanning impulse that is input to above-mentioned scan electrode in the minimum value that it is characterized in that above-mentioned falling waveform and the address period is identical.

21,, it is characterized in that keeping minimum state in above-mentioned falling waveform is during certain according to the driving method of the described plasma display system of claim 20.

22, according to the driving method of the described plasma display system of claim 21, it is characterized in that above-mentioned during certain be between above-mentioned decrement phase more than 0.1 times, below 0.5 times.

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