CN101609640A - Plasma scope and driving method thereof - Google Patents

Plasma scope and driving method thereof Download PDF

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Publication number
CN101609640A
CN101609640A CNA2009101459362A CN200910145936A CN101609640A CN 101609640 A CN101609640 A CN 101609640A CN A2009101459362 A CNA2009101459362 A CN A2009101459362A CN 200910145936 A CN200910145936 A CN 200910145936A CN 101609640 A CN101609640 A CN 101609640A
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China
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voltage
electrode
electrodes
group
onunit
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Chinese (zh)
Inventor
韩相哲
安正洙
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Samsung SDI Co Ltd
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Samsung SDI Co Ltd
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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/28—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using luminous gas-discharge panels, e.g. plasma panels
    • G09G3/288—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using luminous gas-discharge panels, e.g. plasma panels using AC panels
    • G09G3/291—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using luminous gas-discharge panels, e.g. plasma panels using AC panels controlling the gas discharge to control a cell condition, e.g. by means of specific pulse shapes
    • G09G3/294—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using luminous gas-discharge panels, e.g. plasma panels using AC panels controlling the gas discharge to control a cell condition, e.g. by means of specific pulse shapes for lighting or sustain discharge
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/28—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using luminous gas-discharge panels, e.g. plasma panels
    • G09G3/288—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using luminous gas-discharge panels, e.g. plasma panels using AC panels
    • G09G3/291—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using luminous gas-discharge panels, e.g. plasma panels using AC panels controlling the gas discharge to control a cell condition, e.g. by means of specific pulse shapes
    • G09G3/293—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using luminous gas-discharge panels, e.g. plasma panels using AC panels controlling the gas discharge to control a cell condition, e.g. by means of specific pulse shapes for address discharge
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/28—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using luminous gas-discharge panels, e.g. plasma panels
    • G09G3/288—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using luminous gas-discharge panels, e.g. plasma panels using AC panels
    • G09G3/296—Driving circuits for producing the waveforms applied to the driving electrodes
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/28—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using luminous gas-discharge panels, e.g. plasma panels
    • G09G3/288—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using luminous gas-discharge panels, e.g. plasma panels using AC panels
    • G09G3/296—Driving circuits for producing the waveforms applied to the driving electrodes
    • G09G3/2965—Driving circuits for producing the waveforms applied to the driving electrodes using inductors for energy recovery
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00—Command of the display device
    • G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
    • G09G2310/0202—Addressing of scan or signal lines
    • G09G2310/0216—Interleaved control phases for different scan lines in the same sub-field, e.g. initialization, addressing and sustaining in plasma displays that are not simultaneous for all scan lines
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00—Command of the display device
    • G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
    • G09G2310/0202—Addressing of scan or signal lines
    • G09G2310/0218—Addressing of scan or signal lines with collection of electrodes in groups for n-dimensional addressing

Abstract

The method of a kind of plasma scope and driving plasma scope is disclosed.This method comprises the unit is divided into a plurality of groups, and addressing drives each group respectively, and keeps discharge together and drive the groups that are addressed before all.

Description

Plasma scope and driving method thereof
Technical field
This area relates to plasma scope and driving method thereof.
Background technology
The display device that the plasma that plasma scope is to use gas discharge to produce comes displaying symbol or image.In PDP, a plurality of unit are arranged with matrix form substantially.Plasma scope is divided into a plurality of sons field with a frame, and each son field has corresponding weights, and drives this a plurality of sons field with display image.
Usually, each son field comprises reset period, address period and keeps the phase.In reset period, the unit is initialised.In address period, scanning impulse sequentially is applied to a plurality of scan electrodes to select luminous unit (below be called as " onunit ") and non-luminous unit (below be called as " by the unit ").Keeping interimly, the pulse of keeping that alternately has high level voltage and low level voltage is applied to show electrode keeps discharge to carry out in being chosen as luminous unit, with display image.
(Address Display period Separation, ADS) method is come addressing discharge cell and is kept discharge cell can to use the separation of addressing demonstration phase.In the ADS method, in address period, all unit carried out addressing operation after, keep discharge operation keeping interim all unit are carried out.That is, address period was separated with the phase of keeping.In the ADS method, apply by order scanning impulse to a plurality of scan electrodes with after forming the unit and carrying out addressing operation, discharge operation is kept in execution.Therefore, after scanning impulse was applied to all scan electrodes, some scan electrodes that begun to be applied in addressing operation were kept discharge.This can cause these unit that begin to be addressed unsettledly keeps discharge, and this is because starting (priming) particle and/or wall electric charge that addressing operation produced can reduce before discharge is kept in generation.
In addition, in order to simplify the driving circuit of plasma scope, keeping interimly, alternately having keeping pulse and can being applied to a sparking electrode of high level voltage and low level voltage, side by side voltage is applied to another sparking electrode.In this case, ground voltage is applied to a sparking electrode to carry out next operation.But, be manufactured into back-to-back (back-to-back) transistor owing to be used to send the switch of ground voltage, thereby increased the cost of driving circuit.
More than in the disclosed information of background parts only in order to strengthen understanding to background knowledge of the present invention, and therefore it can comprise the information that does not form known systems concerning those skilled in the art of this country.
Summary of the invention
An aspect is a kind of method that drives plasma scope, and this plasma display comprises a plurality of first electrodes, a plurality of second electrode and a plurality of unit that formed by first electrode and second electrode.This method comprises a plurality of first electrodes is divided into a plurality of groups, comprise first group and second group, in first address period, come the addressing onunit and end the unit with first group of electrode, keep interim onunit first and keep discharge first group, the phase of wherein keeping is after first address period, and come the addressing onunit and end the unit with second group of electrode in second address period, wherein second address period is after first keeps the phase.The onunit of keeping first group of discharge is included in during the very first time section, when reference voltage being applied to a plurality of second electrodes, first voltage is applied to a plurality of first electrodes, first voltage is higher than reference voltage, and during second time period after very first time section, when reference voltage being applied to a plurality of second electrodes, second voltage is applied to a plurality of first electrodes, second voltage is lower than reference voltage, during the 3rd time period after second time period, the voltage of a plurality of first electrodes is increased to tertiary voltage from second voltage, and tertiary voltage is higher than second voltage; In the 4th time period after the 3rd time period, (floating) a plurality of first electrodes of floating, and in a plurality of first electrodes of floating, the 4th voltage is applied to a plurality of second electrodes, the 4th voltage is higher than reference voltage, and in the 5th time period after the 4th time period the voltage of a plurality of first electrodes being reduced to the 5th voltage gradually, the 5th voltage is lower than reference voltage.
Another aspect is a kind of plasma scope, and this plasma display comprises a plurality of first electrodes, a plurality of second electrode, a plurality of unit that form near described a plurality of first electrodes and a plurality of second electrode; First driver, it is configured to during the very first time section voltage of a plurality of first electrodes is increased to second voltage from first voltage, a plurality of first electrodes of during second time period after the very first time section, floating, and during the 3rd time period after second time period, the voltage of a plurality of first electrodes is reduced to tertiary voltage gradually; And second driver, it is configured to during very first time section and the 4th voltage is applied to a plurality of second electrodes, during second time period, the 5th voltage is applied to a plurality of second electrodes, and during the 3rd time period, the 6th voltage is applied to a plurality of second electrodes, the 4th voltage is higher than first voltage, and the 5th voltage is higher than the 4th voltage.
Another aspect is a kind of method that drives plasma scope, and this plasma display comprises a plurality of first electrodes, a plurality of second electrode and a plurality of unit that form near described a plurality of first electrodes and a plurality of second electrode.This method is included in during the very first time section, when tertiary voltage being applied to a plurality of second electrodes, the voltage of a plurality of first electrodes is increased to second voltage from first voltage, a plurality of first electrodes of during second time period after the very first time section, floating, in a plurality of first electrodes of floating, the 4th voltage is applied to a plurality of second electrodes, the 4th voltage is higher than tertiary voltage, and during the 3rd time period after second time period voltage of a plurality of first electrodes is reduced to the 5th voltage gradually.
Description of drawings
Fig. 1 is the schematic block diagram according to the plasma scope of embodiment.
Fig. 2 is the synoptic diagram that illustrates according to the plasma scope of embodiment.
Fig. 3 is the synoptic diagram that illustrates according to the drive waveforms of the plasma scope of embodiment.
Fig. 4 is the synoptic diagram according to the driving circuit of the plasma scope of embodiment.
Fig. 5 is the sequential chart of the drive waveforms shown in Fig. 3.
Fig. 6 is according to the sequential shown in Fig. 5, the figure of the operation of driving circuit shown in Figure 4 is shown to Fig. 8.
Embodiment
In following specific description,, illustrate and described specific embodiment of the present invention only by illustrated mode.As is known to the person skilled in the art, the embodiment of description can be modified in every way not breaking away under the spirit or scope of the present invention condition.Therefore, accompanying drawing and explanation are considered to come down to explanatory and nonrestrictive.In full piece of writing instructions, similarly reference number is indicated similar element.
Run through instructions and appending claims thereof, when element of description " was coupled " another element, this element can be that " directly coupling " arrives another element, or " couples " another element indirectly by three element.
And " wall electric charge " indication of describing is in this manual gone up the electric charge that contiguous each electrode forms at the wall (for example, dielectric layer) of unit.The wall electric charge can be not and the electrode actual contact, but in this manual, the wall electric charge is described to " formations ", " gathering " or " accumulation " in the electrode or on the electrode, and wall voltage is indicated the electric potential difference that is formed by the wall electric charge on the wall of unit.
Fig. 1 is the schematic block diagram according to the plasma scope of embodiment.
With reference to figure 1, plasma scope comprises PDP 100, controller 200, addressing electrode driver 300, scan electrode driver 400 and keeps electrode driver 500.
PDP 100 comprises a plurality of show electrode Y 1To Y nAnd X 1To X n, a plurality of addressing electrodes (hereinafter referred to as " A electrode ") A1 is to Am and a plurality of unit 110.At a plurality of show electrode Y 1To Y nAnd X 1To X nIn, Y 1To Y nBe scan electrode (hereinafter referred to as " Y electrode "), X 1To X nBe to keep electrode (hereinafter referred to as " X electrode ").Y electrode Y 1To Y nWith X electrode X 1To X nBasically on line direction, extend, and form parallel Y and X electrode pair basically.A electrode A 1 to Am is extended on the column direction that intersects with line direction basically, and parallel to each other basically.Y electrode Y 1To Y nEach can be corresponding to X electrode X 1To X nIn one.In certain embodiments, Y electrode Y 1To Y nEach all corresponding to X electrode X 1To X nIn two or more.Unit 110 arrives Am, Y electrode Y in A electrode A 1 1To Y nWith X electrode X 1To X nInfall near the space form.PDP 100 described above only is an example, and PDP 100 can have other structure.
Controller 200 receiving video signals and the input control signal that is used for the demonstration of control of video signal.Vision signal comprises each the monochrome information in the unit 110, and each the monochrome information in the unit 110 can be represented as one in many gray levels.Input control signal can comprise vertical synchronizing signal and horizontal-drive signal.Controller 200 is divided into a plurality of sons field with a frame, and each all has weight.Controller 200 is based on a plurality of sons processing vision signal and input control signal, and generation A electrode drive control signal, Y electrode drive control signal and X electrode drive control signal.Controller 200 outputs to addressing electrode driver 300 with A electrode drive control signal, and Y electrode drive control signal is outputed to scan electrode driver 400, and X electrode drive control signal outputed to keeps electrode controller 500.
Addressing electrode driver 300 is applied to A electrode A 1 to Am according to A electrode drive control signal with driving voltage.
Scan electrode driver 400 is applied to Y electrode Y according to Y electrode drive control signal with driving voltage 1To Y n
Keep electrode driver 500 and driving voltage is applied to X electrode X according to X electrode drive control signal 1To X n
Fig. 2 is the synoptic diagram that illustrates according to the driving method of the plasma scope of embodiment.
Being divided into a plurality of son with reference to figure 2, one frames, each son SF has reset period, mixes addressing/keep phase T1, luminance compensation phase T2 and the public phase T3 that keeps.Y electrode Y 1To Y nBe divided into many groups of G1 to Gk according to its physical location.For example, Y electrode Y 1To Y N/kForm first group of G1, Y electrode Y N/k+1To Y 2n/kForm second group of G2.Similarly, Y electrode Y (k-1) n/k+1To Y nForm k group Gk.Replacedly, the Y electrode that is separated by therebetween given area can be divided into one group, perhaps can be with the random fashion Y electrode Y that divides into groups 1To Y n
During reset period, reset wave is applied to the Y electrode Y of all group G1 to Gk 1To Y nWall state of charge with initialization unit.Mixing the addressing/phase T1 of keeping comprises corresponding to group G1 and keeping the phase to a plurality of of Gk to a plurality of address period of Gk with corresponding to organizing G1.That is, mixing addressing/keep the phase, the address period and the phase of keeping are mixed.Therefore, each addressing/phase T1 of keeping has the addressing part and keeps part.In each addressing part, select onunit in the unit from the group that is addressed and end the unit.Keep part at each, group G1 is kept discharge to the onunit of Gk.In luminance compensation phase T2, the variation in the brightness is compensated in the onunit of Gk at group G1.The public phase T3 that keeps is the time period of group G1 being kept one period schedule time of discharge to the total onunit of Gk.
In certain embodiments, group G1 is initialized to by the unit to the unit of Gk in reset period R1.Replacedly, group G1 can be by the while initialization to the unit of Gk during reset period R1, and can use corresponding to organizing a plurality of reset periods of G1 to Gk.In this case, can before the address period of correspondence group, carry out each reset period just.
Mixing addressing/keep among the phase T1, at address period A G1During this time, addressing operation is carried out with the selection onunit in the unit of first group of G1, and keeping phase S subsequently 11In, carry out and keep discharge operation to keep the onunit of first group of G1 of discharge.Next, at address period A G2In addressing operation is carried out to select onunit in the unit of second group of G2, be thereafter to keep discharge operation, carry out this and keep discharge operation to keep phase S 12/ S 21Keep the onunit of first group of G1 of discharge and second group of G2 during this time.Subsequently, at address period A G3In carry out addressing operation selecting the 3rd group of onunit among the G3, and then carry out and keep discharge operation to keep phase S 13/ S 22/ S 31Keep the onunit of discharge first group of G1, second group of G2 and the 3rd group of G3 during this time.In a similar fashion, at address period A GkIn carry out addressing operation selecting the onunit among the k group Gk, and keeping phase S 1k/ S 2 (k-1)/ S 3 (k-2)/ .../S K1Carry out during this time and keep discharge operation to keep the onunit of discharge group G1 in the Gk.Therefore, in addressing/keep among the mixing period T1, the onunit that is addressed before in onunit that just has been addressed in the group and the group is kept discharge together.
Addressing/when keeping the operation of phase T1, the quantity of keeping discharge operation that is used for every group unit can change when carrying out mixing as mentioned above, and this will cause organizing the corresponding brightness variation of G1 to Gk.Change in order to compensate this brightness, carry out luminance compensation phase T2 to proofread and correct the difference in brightness of each group.In luminance compensation phase T2, carry out and to keep discharge operation, like this for group G1 each group in the Gk, the discharge of keeping that in onunit, produces equal number.
During luminance compensation phase T2, keeping phase S 2k/ S 3 (k-1)/ .../S K2During this time, carry out and to keep discharge operation keeping the onunit of discharge group G2 in the G4, and the onunit among the group G1 is not kept discharge.Next, keeping phase S 3k/ .../S K3During this time, carry out and to keep discharge operation keeping the onunit of discharge group G3, and the onunit of organizing G1 and G2 is not kept discharge to Gk.In a similar fashion, keeping phase S KkDuring this time, carry out and keep discharge operation, do not kept discharge to the onunit of Gk-1 and organize G1 to keep the onunit of discharge k group Gk.Therefore, the discharge of keeping that all produces equal number for each group in the son, thus group G1 has identical brightness to the onunit of Gk at identical son.
Keep among the phase T3 public, keep discharge and be performed a period of time, so that all group G1 are kept discharge to the onunit of Gk.By controlling the weight that the public length of keeping phase T3 is provided with corresponding son field.Public keep phase T3 and finish after, the reset period of beginning next son field.
With reference to figure 2, after luminance compensation phase T2, carry out the public phase T3 that keeps.In certain embodiments, addressing/keep and carry out the public phase T3 that keeps between phase T1 and the luminance compensation phase T2 can mixed.In addition, in certain embodiments, when mix that addressing/keep provides among phase T1 and the luminance compensation phase T2 keep discharge operation and satisfy the weight of corresponding son the time, do not carry out the public phase T3 that keeps.
Fig. 3 is the sequential chart that illustrates according to the drive waveforms of the plasma scope of embodiment.For making things convenient for the description among Fig. 3, show Y electrode Y 1To Y nBe divided into two groups of G1 and G2, and the Y electrode of first group of G1 is represented as Yg1, the Y electrode of second group of G2 is represented as Yg2.In addition, the drive waveforms that does not have the A of being applied to electrode shown in Figure 3.
With reference to figure 3, during reset period R1, the Y electrode Yg1 of first group of G1 and second group of G2 and the voltage of Yg2 are increased to voltage [Vs+ (VscH-VscL)] from voltage (VscH-VscL) gradually, wherein voltage (VscH-VscL) is the poor of voltage VscH and voltage VscL, and voltage [Vs+ (VscH-VscL)] is voltage Vs and voltage (VscH-VscL) sum.Replacedly, the voltage of Y electrode can be increased to the voltage that is different from voltage [Vs+ (VscH-VscL)] from the voltage that is different from voltage (VscH-VscL) gradually.When the voltage of Y electrode Yg1 and Yg2 is increased gradually, in the unit of first and second groups of G1 and G2, produce weak reset discharge, on the unit of first and second groups of G1 and G2, form the wall electric charge like this.Subsequently, when voltage Ve was applied to the X electrode, the voltage of Y electrode Yg1 and Yg2 was reduced to voltage Vnf from voltage (VscH-VscL) gradually.Replacedly, the voltage of Y electrode can reduce from the voltage that is different from voltage (VscH-VscL) gradually.When the voltage of Y electrode reduces gradually, in the unit of first and second groups of G1 and G2, produce weak reset discharge, like this, the wall electric charge that forms on the unit of first and second groups of G1 and G2 is wiped free of.As a result, the unit of first and second groups of G1 and G2 is initialized to by the unit.In this case, voltage (Vnf-Ve) is similar with Y electrode and X electric discharge between electrodes ignition voltage (discharge firing voltage).Wall voltage between Y electrode and the X electrode is approximately 0V, can prevent from like this to be discharged in the phase of keeping by the unit.
Mixing addressing/the keep address period A of phase T1 G1In, the scanning impulse with voltage VscL sequentially is applied to the Y electrode Yg1 of first group of G1, and simultaneously voltage Ve is applied to the X electrode, and the voltage VscH that is higher than voltage VscL is applied to the Y electrode Yg2 of second group of G2.Voltage VscL can be equal to or less than voltage Vnf.Addressing pulse (not shown) with positive voltage is applied to the A electrode of unit, and in the unit of the first group of G1 that is formed by the Y electrode that receives scanning impulse, this unit is set to onunit.Then, in the unit of the first group of G1 that receives scanning impulse and addressing pulse, produce address discharge.As a result, on the Y electrode, form positive wall electric charge, on X and A electrode, form negative wall electric charge, thereby be provided with onunit.On the contrary, voltage VscH is applied to the Y electrode that does not receive scanning impulse, and reference voltage is applied to the A electrode that does not receive addressing pulse.
Keeping phase S 11In, alternately having Y electrode Yg1 and the Yg2 that pulse is applied to first group of G1 and second group of G2 that keep of voltage Vs and voltage-Vs, reference voltage is applied to the X electrode.Voltage-Vs can equal voltage VscL.As shown in Figure 3, keep pulse and be applied to Y electrode Yg1 and Yg2 once, that is, voltage Vs and-each of Vs be applied to the Y electrode once.In the onunit of first group of G1, produce and keep twice of discharge.As a result,, on the Y electrode of the onunit of first group of G1, form negative wall electric charge, on the X electrode of the onunit of first group of G1, form positive wall electric charge by the discharge of keeping according to voltage Vs.Subsequently, by keeping discharge, form positive wall electric charge on the onunit Y electrode of first group of G1, on the X electrode of the onunit of first group of G1, form negative wall electric charge according to voltage-Vs.In the unit of second group of G2, do not produce and keep discharge.
In this case, the wall state of charge of the unit among second group of G2 with by in the onunit of first group of G1, produce to keep the wall state of charge that discharge is provided with in reset period R1 different.In order to compensate the wall state of charge of second group of G2, keep phase S11 keep discharge after, the voltage of Y electrode is reduced to voltage Vnf gradually.Produce weak discharge in the unit of second group of G2, the unit of such second group of G2 is by initialization once more.
Subsequently, at address period A G2In, the scanning impulse with voltage VscL sequentially is applied to the Y electrode Yg2 of second group of G2, and voltage Ve is applied to the X electrode of first group of G1 and the Y electrode that voltage VscH is applied to first group of G1 simultaneously.Addressing pulse with positive voltage is applied to the A electrode of unit, and this unit will be set to the onunit in the unit of second group of G2 being made up of the Y electrode that receives scanning impulse.Then, in the unit of the second group of G2 that receives scanning impulse and addressing pulse, produce address discharge.As a result, on the Y electrode, form positive wall electric charge, on X and A electrode, form negative wall electric charge, in second group of G2, be provided with onunit like this.
Keeping phase S 12/ S 21In, alternately having Y electrode Yg1 and the Yg2 that pulse is applied to first group of G1 and second group of G2 that keep of voltage Vs and voltage-Vs, reference voltage is applied to the X electrode simultaneously.Because form positive wall electric charge on the Y electrode when voltage Vs is applied to Y electrode Yg1 and Yg2 in the onunit of the onunit of first group of G1 and second group of G2 and form negative wall electric charge on the X electrode, therefore discharge is kept in generation in the onunit of first group of G1 and second group of G2.As a result, in the onunit of first group of G1 and second group of G2, on the Y electrode, form negative wall electric charge, on the X electrode, form positive wall electric charge.Next,, on the Y electrode, form positive wall electric charge, on the X electrode, form negative wall electric charge by keeping discharge according to voltage-Vs.Therefore, the quantity of keeping discharge in the onunit of second group of G2 is " 2 ", but the quantity of keeping discharge in the onunit of first group of G1 is " 4 ".
Subsequently, carry out luminance compensation phase T2 the quantity of keeping discharge among first group of G1 is made as the quantity of keeping discharge that equals among second group of G2.In luminance compensation phase T2, voltage-Vs is applied to the Y electrode Yg1 of first group of G1 and the Y electrode Yg2 that voltage Vs is applied to second group of G2, and reference voltage is applied to the X electrode simultaneously.Then, in the onunit of second group of G2, produce and keep discharge, on the Y of second group of G2 electrode and X electrode, form negative wall electric charge and positive wall electric charge so respectively.On the contrary, be lower than the reference voltage that is applied to the X electrode, thereby in the onunit of first group of G1, do not have to produce to keep discharge owing to be applied to the voltage-Vs of Y electrode.As a result, positive wall electric charge on the Y electrode and the negative wall electric charge on the X electrode maintain among first group of G1.Subsequently, voltage Vs is applied to the Y electrode Yg2 of second group of G2, and reference voltage and voltage Vs are respectively applied to X electrode and the Y electrode of first group of G1 simultaneously.Then, in the onunit of second group of G2, produce and keep discharge, on the Y of second group of G2 electrode and X electrode, form positive wall electric charge and negative wall electric charge so respectively.But, be lower than the reference voltage that is applied to the X electrode owing to be applied to the voltage-Vs of Y electrode, thereby in the onunit of first group of G1, do not have to produce to keep discharge.As a result, positive wall electric charge on the Y electrode and the negative wall electric charge on the X electrode maintain among first group of G1.Therefore, in luminance compensation phase T2, in the onunit of second group of G2, produce and keep discharge twice, thereby the quantity of keeping discharge among first group of G1 becomes and equals the quantity of keeping discharge among second group of G2.
Replacedly, when voltage-Vs is applied to the Y electrode Yg2 of second group of G2,, can carry out luminance compensation phase T2 by voltage Vs being applied to the Y electrode Yg1 of first group of G1.
At the public phase T3 that keeps, voltage Vs and voltage-Vs are applied to Y electrode Yg1 and Yg2 again, and reference voltage is applied to the X electrode simultaneously.The onunit of first group of G1 and second group of G2 is kept discharge extraly.As mentioned above, can omit the public phase T3 that keeps.
According to embodiment, a plurality of Y electrode Y 1To Y nBe divided into group G1 to Gk, and keep operating between two adjacent address period of phase and be performed.As a result, in address period with the time that provides between the discharge is provided is reduced to produce the stable discharge of keeping.In addition, keeping phase S 11After discharge was kept in middle execution, the voltage of Y electrode was reduced to voltage Vnf gradually, and the charged state of such second group of G2 can be compensated.As a result, can be at address period A G2Stably produce the address discharge that is used for second group of G2.
The driving circuit of the generation drive waveforms shown in Fig. 3 will be described with reference to figure 4.Fig. 4 is the synoptic diagram according to the driving circuit of the plasma scope of embodiment.In Fig. 4, switch is the n slot field-effect transistor, and each n slot field-effect transistor can have such body diode, and it has anode that is connected to source electrode and the negative electrode that is connected to drain electrode.Replacedly, the transistor of other type can be used as switch.In addition, each transistor is illustrated as a transistor in Fig. 3, but each transistor can be made up of the transistor of a plurality of parallel connections.And, figure 3 illustrates X electrode X 1To X nIn one and Y electrode Y 1To Y nIn one, and be illustrated as plane-parallel capacitor (panel capacitor) by the capacity cell that X electrode and Y electrode are formed.
With reference to figure 4, the driving circuit of scan electrode driver 400 comprises inductor L, transistor Yr, Yf, Ys1, Ys2 and YscL, Zener diode ZD, capacitor CscH, diode DscH and sweep circuit 410.
Sweep circuit 400 has two inputs and an output terminal, and comprises transistor Sch and Scl.Corresponding to a plurality of Y electrode Y 1To Y nA plurality of sweep circuits 410 be formed, but a sweep circuit 410 corresponding to a Y electrode has been shown among Fig. 3.In addition, a plurality of sweep circuits 410 are formed an integrated circuit.
The output terminal of the drain electrode of the source electrode of transistor Sch and transistor Scl and sweep circuit 410 couples, and output terminal is couple to the Y electrode.The source electrode of transistor Scl is couple to an input end of sweep circuit 410, and sweep circuit 410 is couple to the end of capacitor CscH.The drain electrode of transistor Sch is couple to another input end of sweep circuit 410, and sweep circuit 410 is couple to the end of capacitor CscH.The source electrode of transistor YscL is couple to the power supply that is used to provide voltage VscL, and the drain electrode of transistor YscL is couple to the Y electrode via an input end of sweep circuit 40.Be used to provide the power supply of voltage VscH to be couple to the other end of capacitor CscH via diode DscH.When transistor YscL conducting, voltage (VscH-VscL) can be charged to capacitor CscH.In address period, transistor YscL conducting, a conducting among the transistor Sch of sweep circuit 410 and the Scl.When transistor Sch conducting, by capacitor CscH and power supply VscL, voltage VscH is applied to the Y electrode.Replacedly, by voltage VscH, voltage VscH can be applied to the Y electrode.That is, one of them in the combination of power supply VscH or capacitor CscH and power supply VscL is used as power supply so that voltage VscH is offered the Y electrode.In addition, when transistor Scl conducting, voltage VscL is applied to the Y electrode.
The end of inductor L is couple to power supply so that reference voltage to be provided, for example, earth terminal, the other end of inductor L is couple to the Y electrode via an input end of transistor Yr and Yf and sweep circuit 410.The drain electrode of transistor Yr is couple to the end of inductor L, and the source electrode of transistor Yr is couple to the source electrode of transistor Yf.The drain electrode of transistor Yf is couple to the Y electrode via an input end of sweep circuit 410.
The drain electrode of transistor Ys1 is couple to power supply and is used to provide voltage Vs, and the source electrode of transistor Ys1 is couple to the Y electrode via the input end of sweep circuit 410.The source electrode of transistor Ys2 is couple to power supply so that voltage-Vs to be provided, and the drain electrode of transistor Ys2 is couple to the Y electrode via an input end of sweep circuit 410.Transistor Ys1 is switched on so that voltage Vs is applied to the Y electrode, and transistor Ys2 is switched on voltage-Vs is applied to the Y electrode.
The source electrode of transistor Yfr is couple to voltage so that voltage VscL to be provided, and the drain electrode of transistor Yfr is couple to the anode of Zener diode Zd, and the negative electrode of Zener diode ZD is couple to the Y electrode via an input end of sweep circuit 410.Replacedly, Zener diode ZD can be coupled between the source electrode and power supply of transistor Yfr.Operate transistor Yfr is to reduce the voltage of Y electrode gradually.The voltage breakdown of Zener diode is poor between voltage Vnf and the voltage VscL.Replacedly, transistor Yfr can be coupled under the condition that not have Zener diode ZD between the power supply and Y electrode that voltage Vnf is provided.Be lower than at voltage-Vs under the situation of voltage VscL/Vnf, when transistor Ys2 conducting, can form the current path of the body diode, transistor Ys2 and the power supply-Vs that comprise power supply VscL, transistor Yfr/YscL.In order to prevent this current path, can in current path, arrange diode or transistor.
In certain embodiments, when voltage VscL equals voltage-Vs, can omit transistor YscL.The driving circuit of keeping electrode driver 500 comprises transistor Xe and Xg.
The drain electrode of transistor Xe is couple to the power supply of power supply Ve, and the source electrode of transistor Xe is couple to the X electrode.The source electrode of transistor Xg is couple to the power supply that is used to provide reference voltage, for example, and earth terminal, and the drain electrode of transistor Xg is couple to the X electrode.Transistor Xe conducting is being provided to the X electrode with voltage Ve, and transistor Xg conducting is to offer reference voltage at the X electrode.
In certain embodiments, in order voltage-Vs to be applied to the Y electrode Yg1 of first group of G1 when applying power supply Vs to the Y electrode Yg2 of second group of G2 in luminance compensation phase T1, transistor Ys1 and Ys2 can be coupled to an input end of the sweep circuit 410 of the Y electrode Yg2 that is used for second group of G2.In this case, be used to apply power supply Vs and-extra transistor of Vs can be coupled to an input end of the sweep circuit 410 of the Y electrode Yg1 that is used for first group of G1.
Driving circuit below with reference to Fig. 5 to Fig. 8, use Fig. 4 is described the method for the generation drive waveforms shown in Fig. 3.Specifically, description is applied to keeps phase S 11Drive waveforms.Owing to keeping phase S 11In, identical drive waveforms is applied to Y electrode Yg1 and the Yg2 of first group of G1 and second group of G2, so description is applied to the drive waveforms of a Y electrode.
Fig. 5 is the sequential chart of the drive waveforms shown in Fig. 3, Fig. 6 to Fig. 8 be according to Fig. 5 sequential, be illustrated in the figure of the operation of the driving circuit shown in Fig. 4.
At first, just, keeping phase S 11Before, transistor Sch is switched on, so that the Y electrode is maintained at voltage VscH.
In time period TA1, transistor Xe and Sch are cut off, and transistor Yr, Scl and Xg are switched on.Therefore, reference voltage is applied to the X electrode.In addition, as shown in Figure 6, produce resonance between the plane-parallel capacitor in inductor L and current path P1, this current path P1 comprises the body diode of inductor L, transistor Yf, transistor Yfr, the body diode of transistor Scl and the Y electrode of plane-parallel capacitor.Because resonance, the voltage of Y electrode is increased near voltage Vs from voltage VscH.
In time period TA2, transistor Ys1 is switched on, and transistor Yr is cut off.Therefore, as shown in Figure 6, formed the current path P2 of the Y electrode that comprises power supply Vs, transistor Ys1, transistor Scl and plane-parallel capacitor.By current path P2, voltage Vs is applied to the Y electrode.
In time period TA3, transistor Ys1 is cut off, transistor Yf conducting.Therefore, go out as shown in Figure 7, produce resonance between the plane-parallel capacitor of inductor L and current path P3, this current path P3 comprises Y electrode, transistor Scl, transistor Yf, transistor Yr, inductor L and the earth terminal of plane-parallel capacitor.Because resonance, the voltage of Y electrode is reduced near voltage-Vs from voltage Vs.
In time period TA4, transistor Ys2 conducting, transistor Yr is cut off.Therefore, as shown in Figure 7, form current path P4, it comprises Y electrode, transistor Scl, transistor Ys2 and the power supply-Vs of plane-parallel capacitor.Voltage-Vs is applied to the Y electrode by current path P4.
In time period TA5, the voltage of Y electrode is increased to voltage V1 from voltage-Vs, and reference voltage is applied to the X electrode simultaneously.Voltage V1 can equal voltage VscH, thereby does not use additional power supply that is provided to voltage V1 and the extra transistor that is used for transmission voltage V1.Particularly, during time period TA5, transistor YscL and Sch are switched on, and transistor Scl and Ys2 are cut off.Like this, as shown in Figure 8.Formed current path P5, it comprises voltage VscL, transistor YscL, capacitor CscH, transistor Sch and Y electrode.The voltage of Y electrode is increased to voltage VscH via current path P5.
In time period TA6, the Y electrode is floated, and the voltage V2 that is higher than reference voltage is applied to the X electrode.Voltage V2 can be lower than voltage Vs to prevent that onunit from being discharged.Specifically, the voltage of voltage V2 can equal voltage Ve, so that do not use the extra transistor that is used to provide the additional power supply of voltage V2 and is used for transmission voltage V2.
Particularly, during time period TA6, transistor YscL is cut off, the sweep circuit 410 Y electrode of floating.The transistor Sch of sweep circuit 410 and Scl are cut off the two.When the Y electrode was floated, transistor Xe was switched on.Then, the voltage of X electrode is increased to voltage Ve by current path P6 from reference voltage, and this current path P6 comprises power supply Ve, transistor Xe and X electrode.In addition, at the voltage at the Y electrode place of floating also the increase of the voltage by X electrode place increase.That is, when the Y electrode was floated, the voltage at Y electrode place increased to the voltage near reference voltage.
As a result, be used to transmit under the transistorized condition of reference voltage not using, the voltage at Y electrode place is near reference voltage.
In time period TA7, transistor Scl and Yfr are switched on.Therefore, as shown in Figure 8, formed current path P7, it comprises Y electrode, transistor Scl, Zener diode ZD, transistor Yfr and the power supply VscL of plane-parallel capacitor.The voltage at Y electrode place is reduced to voltage Vnf gradually by current path P7.
As implied above, according to embodiment, in keeping phase S11, after will keeping the Y electrode that pulse is applied to first group of G1 and second group of G2, the voltage at Y electrode place is reduced to voltage near reference voltage from voltage Vnf gradually.Therefore, although since first group keep discharge, it is unstable that the wall electric charge of the onunit of second group of G2 becomes, it can be compensated.As a result, can in address period AG2, stably produce the address discharge that is used for second group of G2.In addition, in certain embodiments, can omit the transistor that is used for reference voltage is sent to the Y electrode.
Although when being considered to feasible embodiment and having described given inventive aspect, should be appreciated that to the invention is not restricted to the disclosed embodiments, but on the contrary, be intended to contain various modifications and equivalence is provided with in conjunction with current.

Claims (21)

1, a kind of method that drives plasma scope, this plasma display comprise a plurality of first electrodes, a plurality of second electrode and a plurality of unit that is formed by described first electrode and described second electrode, and this method comprises:
Described a plurality of first electrodes are divided into a plurality of groups that comprise first group and second group;
In first address period, with first group of electrode addressing onunit with by the unit;
Keep interimly first, keep first group onunit of discharge, wherein the phase of keeping is after described first address period;
In second address period, with second group of electrode addressing onunit with by the unit, wherein second address period is after first keeps the phase;
The onunit of wherein keeping first group of discharge comprises:
During very first time section, applying reference voltage in a plurality of second electrodes, apply first voltage to a plurality of first electrodes, this first voltage is higher than reference voltage;
During second time period after very first time section, applying reference voltage in a plurality of second electrodes, applying second voltage to a plurality of first electrodes, this second voltage is lower than reference voltage;
During the 3rd time period after second time period, the voltage of a plurality of first electrodes is increased to tertiary voltage from second voltage, this tertiary voltage is higher than second voltage;
During the 4th time period after the 3rd time period, a plurality of first electrodes of floating;
In a plurality of first electrodes of floating, the 4th voltage is applied to a plurality of second electrodes, the 4th voltage is higher than reference voltage; And
During the 5th time period after the 4th time period, the voltage with a plurality of first electrodes is reduced to the 5th voltage gradually, and the 5th voltage is lower than reference voltage.
2, the method for claim 1, wherein when the 4th voltage is applied to a plurality of second electrode, the voltage of a plurality of first electrodes increases.
3, the method for claim 1, wherein onunit of first group of addressing and comprise by the unit:
The 6th voltage is applied to a plurality of second electrodes; And
When the 6th voltage is applied to a plurality of second electrodes, sequentially the 7th voltage is applied to first group first electrode,
Wherein, described the 4th voltage equals the 6th voltage.
4, the method for claim 1 also comprises: in the reset period before first address period, the voltage of a plurality of first electrodes is reduced to the 7th voltage from the 6th voltage,
Wherein, described the 5th voltage equals the 7th voltage.
5, the method for claim 1, wherein onunit of first group of addressing and comprise by the unit:
Sequentially the 6th voltage is applied to first group first electrode; And
The 7th voltage is applied to first electrode that does not apply the 6th voltage, and the 7th voltage is higher than the 6th voltage,
Wherein, described tertiary voltage equals the 7th voltage.
6, the method for claim 1, wherein keep interimly first, when first voltage and second voltage were applied to a plurality of first electrodes, discharge was not kept in second group unit.
7, the method for claim 1 also comprises: second keep interimly after second address period, keep second group onunit of discharge.
8, method as claimed in claim 7 also comprises: keep interimly second, when keeping second group onunit of discharge, keep the onunit of first group of discharge.
9, method as claimed in claim 8 also comprises: the third dimension after second keeps the phase is held interim, keeps the onunit of second group of discharge and does not keep first group onunit of discharge.
10, method as claimed in claim 9 also comprises: hold the interim onunit of keeping discharge first group and second group at fourth dimension,
Wherein, the fourth dimension phase of holding is to keep the phase and the third dimension was held between the phase after the third dimension is held the phase or second.
11, method as claimed in claim 9, wherein, hold the interim onunit of keeping second group of discharge in the third dimension and comprise:
When reference voltage being applied to a plurality of second electrodes, first voltage is applied to second group first electrode;
When reference voltage being applied to a plurality of second electrodes, second voltage is applied to a plurality of first electrodes of second group; And
Hold in the third dimension interim, when first voltage and second voltage being applied to second group first electrode, with one in first voltage and second voltage first electrode that is applied to first group.
12, the method for claim 1, wherein single son field comprises that first address period, first keeps the phase and second address period.
13, a kind of plasma scope comprises:
A plurality of first electrodes;
A plurality of second electrodes;
Near a plurality of unit that described a plurality of first electrodes and a plurality of second electrode, form;
First driver, it is configured to:
During very first time section, the voltage of a plurality of first electrodes is increased to second voltage from first voltage;
During second time period after very first time section, a plurality of first electrodes of floating;
During the 3rd time period after second time period, the voltage with a plurality of first electrode places is reduced to tertiary voltage gradually; And
Second driver, it is configured to:
During very first time section, the 4th voltage is applied to a plurality of second electrodes;
During second time period, the 5th voltage is applied to a plurality of second electrodes; And
During the 3rd time period, the 6th voltage is applied to a plurality of second electrodes, the 4th voltage is higher than first voltage, and the 5th voltage is higher than the 4th voltage.
14, plasma scope as claimed in claim 13, wherein, described the 5th voltage equals the 6th voltage.
15, plasma scope as claimed in claim 14, wherein, described first driver comprises:
Be couple to a plurality of sweep circuits of a plurality of first electrodes respectively, each sweep circuit has first input end, second input end and is couple to corresponding one output terminal in a plurality of first electrodes;
First switch is coupled between second input end of first power supply that is used to provide first voltage and sweep circuit;
Second switch is coupled between the first input end of the second source that is used to provide second voltage and sweep circuit;
The 3rd switch is coupled between second input end of the 3rd power supply that is used to provide tertiary voltage and sweep circuit, and is operated reducing the voltage of a plurality of first electrodes gradually,
And wherein, described second driver comprises:
The 4th switch is coupled between the 4th power supply and a plurality of second electrode that the 4th voltage is provided; And
The 5th switch is coupled between the 5th power supply and a plurality of second electrode that the 5th voltage is provided.
16, method as claimed in claim 15, wherein:
During very first time section, first switch is disconnected and second switch and the 4th switch are switched on,
During second time period, sweep circuit is operated with a plurality of first electrodes of floating, and the 5th switch is switched on, and
During the 3rd time period, the 3rd switch is switched on and the 5th switch is switched on.
17, plasma scope as claimed in claim 13, wherein, when second driver is applied to a plurality of second electrodes with the 4th voltage, first driver is configured to alternately the 7th voltage and the 5th voltage are applied to a plurality of first electrodes to keep at least one unit of discharge, and the 7th voltage is higher than the 4th voltage.
18, plasma scope as claimed in claim 13, wherein, the scanning impulse that described first driver is configured to have the 7th voltage is applied at least one first electrode to select at least one onunit in a plurality of unit, and second voltage is applied to first electrode that is not applied in scanning impulse, the 7th voltage is lower than second voltage.
19, plasma scope as claimed in claim 13, wherein a plurality of first electrodes are divided into a plurality of groups that comprise first group and second group,
Wherein first driver is configured to:
In first address period, utilize first group of electrode to come the addressing onunit and by the unit;
Keep interimly first, keep first group onunit of discharge, wherein this keeps the phase after first address period;
In second address period, utilize second group of electrode addressing onunit and end the unit, wherein second address period is after first keeps the phase; And
After second address period, second keep interimly, keep the onunit of discharge in first group and second group.
20, plasma scope as claimed in claim 13, wherein very first time section be first keep interim keep first group onunit of discharge after.
21, a kind of method that drives plasma scope, this plasma display comprise a plurality of first electrodes, a plurality of second electrode and a plurality of unit that form near described a plurality of first electrodes and a plurality of second electrode, this method comprises:
During very first time section, when tertiary voltage being applied to a plurality of second electrodes, the voltage of a plurality of first electrodes is increased to second voltage from first voltage;
During second time period after very first time section, a plurality of first electrodes of floating;
In a plurality of first electrodes of floating, the 4th voltage is applied to a plurality of second electrodes, the 4th voltage is higher than tertiary voltage; And
During the 3rd time period after second time period, the voltage of a plurality of first electrodes is reduced to the 5th voltage gradually.
CNA2009101459362A 2008-06-17 2009-06-11 Plasma scope and driving method thereof Pending CN101609640A (en)

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Publication number Priority date Publication date Assignee Title
CN101727823B (en) * 2008-12-30 2011-10-12 四川虹欧显示器件有限公司 Sustaining electrode driving circuit for plasma display and driving method

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KR100726633B1 (en) * 2005-07-28 2007-06-12 엘지전자 주식회사 Plasma display apparatus and driving method thereof
KR100627416B1 (en) * 2005-10-18 2006-09-22 삼성에스디아이 주식회사 Driving method of plasma display device

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101727823B (en) * 2008-12-30 2011-10-12 四川虹欧显示器件有限公司 Sustaining electrode driving circuit for plasma display and driving method

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