CN1790460A - Plasma display apparatus and driving method thereof - Google Patents
Plasma display apparatus and driving method thereof Download PDFInfo
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- CN1790460A CN1790460A CNA2005101317912A CN200510131791A CN1790460A CN 1790460 A CN1790460 A CN 1790460A CN A2005101317912 A CNA2005101317912 A CN A2005101317912A CN 200510131791 A CN200510131791 A CN 200510131791A CN 1790460 A CN1790460 A CN 1790460A
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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
- G09G3/296—Driving circuits for producing the waveforms applied to the driving electrodes
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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
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- Physics & Mathematics (AREA)
- Power Engineering (AREA)
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- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The present invention relates to a display apparatus, and more particularly, to a plasma display apparatus and driving method thereof. The plasma display apparatus according to an embodiment of the present invention comprises a plasma display panel comprising a scan electrode and a sustain electrode, a first voltage supply unit connected to the scan electrode and the sustain electrode, for supplying a first voltage to the scan electrode or the sustain electrode during a sustain period, and a second voltage supply unit connected to the scan electrode and the sustain electrode, for supplying a second voltage with a polarity inverse to the polarity of the first voltage to an electrode counter to an electrode to which the first voltage is supplied during the sustain period. Therefore, a scan driver and a sustain driver for driving the scan electrode and the sustain electrode are not separately comprised. The construction of a circuit can be simplified and an amount in which an element is used can be reduced. It is also possible to lower a voltage level of a driving pulse.
Description
Technical field
The present invention relates to a kind of display device, more specifically, relate to a kind of plasma display panel device and driving method thereof.
Background technology
Plasma display panel device by being used in mixing inert gas such as the ultraviolet ray excited fluorophor that produces when He+Xe, Ne+Xe or He+Ne+Xe discharge come display image.Plasma display panel device can be easy to make thinly and be big, and it can provide high-quality image to adopt the recent relevant technologies of developing.
Fig. 1 is the view that the explanation plasma display panel device is realized the method for image.
With reference to figure 1, the frame that plasma display panel device is divided into the plurality of sub field comes the time-division to drive, and this child field has different emitting times to realize the gray level of image.Each son field is divided into: the reset cycle, be used for whole screen initialization; Addressing period is used for selecting scan line and selecting discharge cell from the scan line of selecting (line); With the cycle of keeping, be used for realizing gray level according to discharge time.
For instance, if wish to show image, will be divided into eight sons (SF1 is to SF8) corresponding to 1/60 second a frame (16.67ms) cycle with 256 gray levels.As mentioned above, each son (SF1 is to a SF8) is divided into reset cycle, addressing period and keeps the cycle.Reset cycle and the addressing period of each son all is identical to each son, and keep the cycle and be assigned to the cycle of keeping keep pulse number in each son with 2
nThe ratio of (wherein, n=0,1,2,3,4,5,6,7) increases.
Fig. 2 illustrates the drive waveforms of prior art ionic medium display device.
With reference to figure 2, each son (SF) comprises the reset cycle (RP) of the discharge cell that is used for the whole screen of initialization, the keeping the cycle of discharge (SP) that is used to select the addressing period (AP) of discharge cell and is used to keep selected discharge cell.
In foundation (set-up) cycle (SU) of reset cycle (RP), up-wards inclination (ramp-up) waveform is applied to whole scan electrodes simultaneously.By this up-wards inclination waveform (PR), in the unit of whole screen, produce weak discharge (setting up discharge), thereby in the unit, produce the wall electric charge.Removing the cycle in (SD) of reset cycle (RP), keep voltage (Vs) from just (+) of the crest voltage that is lower than up-wards inclination waveform (PR) and drop to negative scanning voltage with predetermined degree of tilt (decline tilt waveform (NR) Vy) is applied simultaneously these scan electrodes.This decline tilt waveform (NR) produces weak erasure discharge in the unit, wipe by the unnecessary electric charge in the wall electric charge of setting up discharge generation and the space charge, thereby allow the necessary wall electric charge of address discharge to be retained in equably in the unit of whole screen.
At addressing period (AP), when will bearing (-) scanning impulse (SCNP) order and being applied to this scan electrode Y, just (+) data pulse (DP) is applied to addressing electrode X.Because the voltage difference between scanning impulse (SCNP) and data pulse (DP) is superimposed with the wall voltage that produces, thereby in the unit that has applied data pulse (DP), produce address discharge in the reset cycle (RP).In selected unit, produced the wall electric charge by address discharge.Simultaneously, during cycle of setting up (SD) and addressing period (AP), will be just (+) keep voltage and be applied to and keep electrode Z.
In the cycle of keeping (SP), will keep pulse (SUSP) and alternately be applied to scan electrode Y and keep electrode Z.Therefore because the wall voltage in the voltage and to keep pulse (SUSP) superimposed, so as long as apply and keep pulse (SUSP), in selected unit by address discharge just at scan electrode Y with keep between the electrode Z form generation and keep discharge with surface-discharge.This is kept pulse (SUSP) and has and keep the identical magnitude of voltage of voltage (Vs).
Fig. 3 is the circuit diagram of prior art ionic medium display device.
With reference to figure 3, the plasma display panel device of prior art comprises that keeping pulse provides unit 2, sets up voltage and controller 6 is provided, removes voltage and provide controller 8, scanning voltage to provide controller 10, scan reference voltage that controller 12, scan IC (IC) 14, the tenth switch SW 10 and the 11 switch SW 11 are provided.Panel capacitor Cp is illustrated in the scan electrode Y of plasma display panel device equivalently and keeps the electric capacity that forms between the electrode Z.And, in Fig. 3, only show the scanner driver that is used for driven sweep electrode Y, be used to drive the driver of keeping of keeping electrode Z and omitted.That is to say that the plasma display panel device of prior art comprises keeps driver etc., keep pulse to keeping electrode Z, and this is kept driver and comprises with the pulse of keeping of Fig. 3 and provide the identical pulse of keeping in unit 2 that the unit is provided to provide.
During the cycle of keeping (SP), this keeps the scan electrode Y that pulse (SUSP) is provided to panel capacitor Cp that keeps that pulse provides unit 2 will keep voltage level (Vs) and have ground voltage level (GND).This keeps pulse provides unit 2 to provide controller 16 and ground voltage to provide controller 18 to constitute by keeping voltage.
During the setting up the cycle (SU) and keep the cycle (SP) of reset cycle, this keeps the voltage of keeping that voltage provides scan electrode Y that controller 16 controls will be provided to panel capacitor Cp.This is kept voltage and provides controller 16 to comprise to be connected first switch SW of keeping between voltage source (Vs) and the first node N1 1.
During the cycle of keeping (SP), this ground voltage provides controller 18 controls will be provided to the ground voltage (GND) of the scan electrode Y of panel capacitor Cp.This ground voltage provides controller 18 to comprise to be connected the second switch SW2 between ground voltage source (GND) and the first node N1.
During the setting up the cycle of reset cycle (RP) (SU), this sets up voltage provides controller 6 control up-wards inclination waveforms (PR) that it is provided to the scan electrode Y of panel capacitor Cp, as shown in Figure 2, this up-wards inclination waveform rises to crest voltage (Vs+Vsetup) with predetermined degree of tilt from keeping voltage (Vs).This sets up voltage provides controller 6 to comprise: the 3rd switch SW 3, and it is connected sets up between voltage source (Vsetup) and the Section Point N2; The first variohm R1, the grid end that it is connected to the 3rd switch SW 3 is used to control the degree of tilt of this up-wards inclination waveform (PR); And the first capacitor C1, it is connected sets up between voltage source (Vsetup) and the first node N1.
During the removing the cycle of reset cycle (RP) (SD), this removes voltage provides controller 8 control decline tilt waveforms (NR), it is provided to the scan electrode Y of panel capacitor Cp, as shown in Figure 2, this decline tilt waveform drops to drop-out voltage (Vy) with predetermined degree of tilt from keeping voltage (Vs).This drop-out voltage provides controller 8 to comprise: the 4th switch SW 4, and it is connected scan voltage source (Vy) and between the 3rd node N3; And the second adjustable resistance device R2, the grid end that it is connected to the 4th switch SW 4 is used to control the degree of tilt of this decline tilt waveform (NR).
During addressing period (AP), the scanning voltage that this scanning voltage provides the scan electrode Y that controller 10 control will offer panel capacitor Cp as shown in Figure 2 (Vy).This scanning voltage provides controller 10 to comprise and is connected this scan voltage source (the 4th switch SW 4 the 5th switch SW 5 in parallel Vy) and between the 3rd node N3.
During addressing period (AP), this scan reference voltage provides controller 12 controls will offer the scan reference voltage (Vsc) of the scan electrode Y of panel capacitor Cp as shown in Figure 2.The 6th switch and minion that this scan reference voltage provides controller 12 to comprise and is connected between scan reference voltage source (Vsc) and the 3rd node N3 are closed, and are connected the second capacitor C2 between scan reference voltage source (Vsc) and the 3rd node N3.
Scans I C 14 comprises that the octavo that is connected between the 4th node N4 and the 3rd node N3 with the form of recommending closes SW8 and the 9th switch SW 9.This octavo is closed SW8 by its body diode, and the scan electrode Y of panel capacitor Cp is connected to the 4th node N4.The 9th switch SW 9 is connected to the 3rd node N3 by its body diode the scan electrode Y of panel capacitor Cp.
The tenth switch SW 10 is connected between first node N1 and the Section Point N2, and by its body diode first node N1 is electrically connected to Section Point N2.And 10 responses of the tenth switch SW are electrically connected to Section Point N2 from the tenth switch controlling signal that the timing controller (not shown) provides with first node N1.
11 responses of the 11 switch SW are electrically connected to the 3rd node N3 from the 11 switch controlling signal that the timing controller (not shown) provides with Section Point N2.
As mentioned above, in the prior art, be to drive plasma display panel device, need have a plurality of voltage levels such as set up voltage (Vsetup), keep voltage (Vs), ground voltage (GND), scan reference voltage (Vsc), data voltage (Va) and scanning voltage (many DC power supplys Vy).Keeping voltage (Vs), ground voltage (GND) and data voltage (Va) is to provide from panel (power board, not shown).Remaining power supply such as set up voltage (Vsetup), scanning voltage (Vy) and scan reference voltage (Vsc) carry out the DC-DC conversion and generate by keeping voltage (Vs), so be suitable for each voltage level.As mentioned above, in the driving arrangement of prior art plasma display panel device, need many DC-DC change-over circuits that are used to change each power level.Therefore, owing to increasing, the plasma display panel device cost goes wrong.That is to say that the prior art plasma display panel device uses and can bear the element of the drive waveforms of high frequency, high pressure and high electric current in a large number.Thereby, the manufacturing cost height.
When driving plasma display panel device,, also there is the problem of product efficiency owing to the heat and the noise that in element, produce.
Summary of the invention
Therefore, the objective of the invention is to solve at least the problems of the prior art and shortcoming.
The purpose of this invention is to provide plasma display panel device and driving method thereof, wherein reduced the number that drives the necessary power supply of Plasmia indicating panel, to save cost.
Another object of the present invention provides a kind of plasma display panel device and driving method thereof, wherein uses compared with prior art element at a low price, can save prime cost and can intensifier circuit efficient.
For achieving the above object, comprise according to the plasma display panel device of the embodiment of the invention: Plasmia indicating panel, it comprises scan electrode and keeps electrode; First voltage provides the unit, and it is connected to scan electrode and keeps electrode, is used for during the cycle of keeping first voltage being offered scan electrode or keeping electrode; Provide the unit with second voltage, it is connected to scan electrode and keeps electrode, is used for the electrode electrode of opposite that second voltage during the cycle of keeping that its polarity is opposite with first polarity of voltage offered and be provided first voltage.
Plasma display panel device according to another embodiment of the present invention, it comprises: Plasmia indicating panel, it comprises scan electrode and keeps electrode; First voltage provides the unit, and it is connected to scan electrode and keep electrode, is used at addressing period first voltage being offered keeping electrode and being used in the cycle of keeping first voltage being offered scan electrode or keeping electrode; Provide the unit with second voltage, it is connected to scan electrode and keeps electrode, is used for offering and be provided the electrode electrode of opposite of first voltage at the cycle of keeping second voltage that its polarity is opposite with first polarity of voltage.
The present invention further provides a kind of method that drives plasma display panel device, this plasma display device is realized image by making up a plurality of sons field in an image duration, each son all comprises the cycle of foundation, removes the cycle, addressing period and keeping the cycle, the method comprising the steps of: provide first voltage to keeping electrode at addressing period, with provide first voltage to scan electrode with keep any one of electrode and the electrode electrode of opposite that second voltage that its polarity is opposite with first polarity of voltage offered and be provided first voltage in the cycle of keeping.
According to plasma display panel device of the present invention and driving method thereof, can reduce the number that drives the necessary power supply of plasma display panel device.Therefore, has the advantage that to save cost.
According to plasma display panel device of the present invention and driving method thereof, compared with prior art can use element at a low price.Thereby, have and can save prime cost and advantage that can intensifier circuit efficient.
Description of drawings
Describe the present invention below with reference to accompanying drawings in detail, identical in the accompanying drawings Reference numeral is represented identical part.
Fig. 1 is the view that the explanation plasma display panel device is realized the method for image;
Fig. 2 shows the drive waveforms of prior art ionic medium display device;
Fig. 3 is the circuit diagram of prior art ionic medium display device;
Fig. 4 is the circuit diagram according to the plasma display panel device of first embodiment of the invention;
Fig. 5 is the view of explanation according to the drive waveforms of the plasma display panel device of first embodiment of the invention;
Fig. 6 is the circuit diagram according to the plasma display panel device of second embodiment of the invention; With
Fig. 7 is the view of explanation according to the drive waveforms of the plasma display panel device of second embodiment of the invention.
Embodiment
Below with reference to the accompanying drawings, in more detailed mode the preferred embodiments of the present invention are described.
Plasma display panel device according to the embodiment of the invention comprises: Plasmia indicating panel, and it comprises scan electrode and keeps electrode; First voltage provides the unit, and it is connected to scan electrode and keeps electrode, is used in the cycle of keeping first voltage being offered scan electrode or keeping electrode; And second voltage the unit is provided, it is connected to scan electrode and keep electrode, is used for offering and be provided the electrode electrode of opposite of first voltage at the cycle of keeping second voltage that its polarity is opposite with first voltage.
Voltage difference between this first voltage and second voltage is to keep the voltage level of sparking voltage (Vs).
The voltage level of this first voltage is Vs/2.
The voltage level of this second voltage is-Vs/2.
This plasma display device further comprises and is used for providing the unit in the cycle of setting up with the tertiary voltage that tertiary voltage offers scan electrode.
During the cycle of setting up, this first voltage provides unit and tertiary voltage to provide the unit that the combination of first voltage and tertiary voltage is offered scan electrode.This second voltage provides the unit that second voltage is offered and keeps electrode.
This tertiary voltage provides the unit to comprise and is connected to first switch of first variohm, and in the cycle of setting up, provides tertiary voltage by this first switch.
In the cycle of removing, this second voltage provides the unit that second voltage is offered scan electrode.Remove the cycle at this, this first voltage provides the unit that first voltage is offered and keeps electrode.
This second voltage provides the unit to comprise and is connected to the second switch of the second adjustable resistance device, and in the cycle of removing, provides second voltage by this second switch.
This plasma display device comprises further and is used to provide the 4th voltage of the 4th voltage that the unit is provided that wherein the 4th voltage provides the unit at addressing period the 4th voltage to be offered scan electrode.
The voltage level of the 4th voltage be from greater than ground voltage level to less than this first voltage level.
In the scan period, this second voltage provides sequence of unit ground that second voltage is offered a plurality of scan electrodes.
This first voltage provides the unit to comprise that first energy provides/reclaim the unit, and it is used for positive voltage being offered scan electrode or keeping electrode and reclaim this positive voltage from it.
The voltage level of this positive voltage is about Vs/4.
This second voltage provides the unit to comprise that second energy provides/reclaim the unit, and it is used for negative voltage being offered scan electrode or keeping electrode and reclaim this negative voltage from it.
The voltage level of this negative voltage is approximately-Vs/4.
Plasma display panel device comprises according to another embodiment of the present invention: Plasmia indicating panel, and it comprises scan electrode and keeps electrode; First voltage provides the unit, and it is connected to scan electrode and keep electrode, is used at addressing period first voltage being provided to keeping electrode and being used in the cycle of keeping first voltage being offered scan electrode or keeping electrode; And second voltage the unit is provided, it is connected to scan electrode and keep electrode, is used for offering and be provided the electrode electrode of opposite of first voltage at the cycle of keeping second voltage that its polarity is opposite with this first polarity of voltage.
The voltage level of this first voltage is Vs/2.
The voltage level of this second voltage is-Vs/2.
A kind of method that drives plasma display panel device, this plasma display device by a plurality of of combination one image duration display image, each son all comprises the cycle of foundation, removes the cycle, addressing period and keeping the cycle, the method comprising the steps of: provide first voltage to keeping electrode at addressing period, with in the cycle of keeping first voltage is offered scan electrode or keeps the arbitrary of electrode and second voltage that its polarity is opposite with this first polarity of voltage offers and be provided the first electrode electrode of opposite.
＜the first embodiment 〉
Fig. 4 is the circuit diagram according to the plasma display panel device of first embodiment of the invention.
As shown in Figure 4, this plasma display device according to first embodiment of the invention comprises that first voltage provides the unit 100 and second voltage that unit 190 is provided, and is used for providing first and second voltages with opposed polarity in the cycle of keeping.Provide unit 100 to be connected to scan electrode Y and keep electrode Z according to this first voltage of first embodiment of the invention, and second voltage provides unit 190 to be connected to scan electrode Y and keeps electrode Z.That is to say, be different from prior art, this plasma display device according to the present invention does not comprise the scanner driver that separates that is respectively applied for driven sweep electrical equipment Y and keeps electrode Z and keeps driver.Therefore, can simplify circuit, and the quantity of use therein device can reduce also.And, use integrated drive plate fully this first voltage of framework provide the unit and second voltage that the unit is provided.Term " integrated drive plate " is meant the plate that uses a drive plate to come the driven sweep electrode and keep electrode.
Simultaneously, in the first embodiment of the present invention, during the cycle of keeping, first voltage (be positive voltage (+Vs/2)) and second voltage (are the scan electrode that negative voltage (Vs/2)) alternately is provided to Plasmia indicating panel, and with first voltage and second alternating voltage be provided to the order of the reversed in order of scan electrode, first voltage and second voltage are provided to the electrode of keeping of Plasmia indicating panel.That is to say, by provide its voltage difference be keep first voltage of sparking voltage (Vs) (+Vs/2) and second voltage (Vs/2), can make keeping the discharge be maintained.As mentioned above, be different from prior art, making to keep to drive with this voltage of 1/2 of keeping sparking voltage (Vs) becomes possibility.
And, keep electrode owing to second voltage being applied in the cycle of setting up, can form and be provided to the voltage difference of just setting up voltage of scan electrode, wherein can accumulate the wall electric charge effectively.Therefore, compared with prior art, can reduce the voltage level that this sets up voltage.In addition, keep electrode, can form and be provided to the voltage difference of the negative drop-out voltage of scan electrode, wherein can wipe the wall electric charge effectively owing to first voltage being applied in the cycle of removing.Therefore, compared with prior art, can improve the voltage level of negative drop-out voltage.As mentioned above, can reduce the voltage that in the reset cycle, applies.
To describe operating feature now in detail according to the plasma display panel device of first embodiment of the invention.
Plasma display panel device according to first embodiment of the invention comprises: first voltage provides unit 100, the second voltages that unit 190 is provided, and tertiary voltage provides unit 110, the four voltages to provide unit 150 and the 5th voltage that unit 200 is provided.
It is that first voltage of (Vs/2) offers scan electrode and keeps electrode with its voltage level that first voltage provides unit 100.That is to say, as shown in Figure 5, in each cycle, be that first voltage of (Vs/2) offers scan electrode and keeps electrode with its voltage level.This will describe in detail with reference to Fig. 5 after a while.Simultaneously, this first voltage provides unit 100 to comprise that first can provide/reclaim unit 101, and it is provided to scan electrode with positive voltage or keeps electrode and reclaim this positive voltage from it.That is to say that this first energy provides/reclaims unit 101 to reclaim and offers the reactive power that is formed on the scan electrode in the Plasmia indicating panel or keeps electrode, and provides this reactive power to it once more, thereby has improved energy efficiency.For this reason, this first energy provides/reclaims unit 101 to comprise the first capacitor C1 and the first inductor L1.Voltage level that provide and that be provided at the energy among this first capacitor C1 becomes about Vs/4.The 5th switch Q6 switches and control provides unit 100 to provide and reclaim the current path of positive energy from first voltage.
It is that (second voltage VS/2) offers scan electrode and keeps electrode with its voltage level that second voltage provides unit 190.That is to say that as shown in Figure 5, in each cycle, this second voltage provides unit 190 that second voltage is offered scan electrode and keeps electrode.This will describe in detail with reference to Fig. 5 after a while.Meanwhile, this second voltage provides unit 190 to comprise that second energy provides/reclaim unit 191, and it provides negative voltage to scan electrode or keep electrode and reclaim this positive voltage from it.That is to say that this second energy provides/reclaims unit 191 to reclaim and offers the reactive power that is formed on the scan electrode in this plasma display panel or keeps electrode, and provides this reactive power to it once more, thereby improves energy efficiency.For this reason, this second energy provides/reclaims unit 191 to comprise the second capacitor C2 and the second inductor L2.Voltage level that provide and that be provided at the energy among this second capacitor C2 becomes approximately-Vs/4.
This second voltage provides unit 190 to comprise second switch Q11, and the second adjustable resistance device VR2 is attached thereto.Therefore,, second voltage is offered scan electrode, form the decline tilt waveform simultaneously in the cycle of removing.
This second voltage provides unit 190 to may further include the 3rd switch Q21 to set up cycle stability ground accumulation wall electric charge, and this variohm VR3 is connected to the 3rd switch Q21.That is to say, because in the cycle of setting up, by the 3rd switch Q21 second voltage is offered and to keep electrode, so keep electrode and form the decline tilt waveform simultaneously in that second voltage is offered.In addition, being included in this second voltage provides the 4th switch Q10 in the unit 190 to be used to be controlled at addressing period second voltage is provided is the switch of scanning voltage to scan electrode.
In the cycle of setting up, tertiary voltage provides unit 110 to provide tertiary voltage to scan electrode.This tertiary voltage is a positive voltage, and is provided to scan electrode in the cycle of foundation, makes up as setting up voltage with itself and first voltage that provides the unit to provide from first voltage.This tertiary voltage provides unit 110 to comprise the first switch Q5, and variohm VR1 is attached thereto.In the cycle of setting up, tertiary voltage provides unit 110 to provide tertiary voltage by this first switch Q5, makes to set up pulse shaping up-wards inclination waveform.
At addressing period, the 4th voltage provides unit 150 that the 4th voltage is promptly scanned bias voltage (Vsc) and offers scan electrode.The voltage level of the 4th voltage be from greater than ground voltage level to less than first voltage level.The voltage level of the 4th voltage is from being to the reason less than first voltage level greater than ground voltage level, because scanning voltage drops to negative second voltage (Vs/2), although there is not addressing voltage (Va) to be applied to addressing electrode, because scan electrode and keep surface-discharge between the electrode still may produce erroneous discharge.
At addressing period, the 5th voltage provides unit 200 that the 5th voltage (Vzb) is offered and keeps electrode.Because positive the 5th voltage (Vzb) is provided for and keeps electrode, can reduce at the addressing period scan electrode and keep voltage difference between the electrode.
The 6th switch Q16 switches and the control edge offers the current path of keeping electrode with first voltage.
Minion closes the Q17 switching and the control edge offers the current path of keeping electrode with second voltage.
Fig. 5 is the drive waveforms of explanation according to the plasma display panel device of first embodiment of the invention.
As shown in Figure 5, plasma display panel device according to first embodiment of the invention is driven by a frame, the keeping the cycle of discharge that this frame is divided into reset cycle of being used for the whole unit of initialization, be used to select to want the addressing period of discharge cell and be used to keep the unit of selection.
Setting up in the cycle of reset cycle, first voltage provides first voltage (Vs/2) of unit 100 and tertiary voltage (Vsetup) that tertiary voltage provides unit 110 to be combined, and offers the first switch Q5 then.This first switch Q5 provides to have predetermined inclination and voltage that its channel width (channel width) is controlled by the first variohm VR1.This voltage with predetermined inclination is provided for scan electrode Y via the switch Q14 on scans I C 160 tops.By this processing, as shown in Figure 5, the voltage (Vs/2+Vsetup) of setting up that forms the up-wards inclination waveform is offered whole scan electrode Y simultaneously.
In addition, via the 3rd switch Q21, provide second voltage of unit 190 (Vs/2) to offer and keep electrode Z second voltage.Therefore, can reduce the voltage level of setting up waveform, this set up waveform be offer scan electrode in the cycle of foundation and form scan electrode Y simultaneously and keep voltage difference between the electrode Z.And (Vs/2), the decline tilt waveform of Xia Jianging is provided for and keeps electrode gradually, makes stably to accumulate the wall electric charge owing to provide second voltage via the 3rd switch.
As mentioned above, set up the cycle, in the discharge cell of whole screen, produce weak dark discharge by this.This foundation discharge causes positive wall electric charge to be accumulated in addressing electrode and keeps on the electrode, and negative wall electric charge is accumulated on the scan electrode.
In the cycle of removing,, provide second voltage of unit 190 (Vs/2) to offer scan electrode second voltage via second switch Q11.Therefore, as shown in Figure 5, the decline tilt waveform is provided for scan electrode, and the voltage of scan electrode drops to (Vs/2).
And first voltage provides first voltage (Vs/2) of unit 190 to be offered via the 6th switch Q16 and keeps electrode.Therefore, at scan electrode with keep enough voltage differences that the wall electric charge is wiped in formation between the electrode.In the first embodiment of the present invention, illustrated first voltage to be offered and kept electrode in the cycle of removing.Yet,, the 5th voltage can be provided positive the 5th voltage (Vzb) of unit 200 to offer and keep electrode in the cycle of removing.
As mentioned above, remove the cycle, between scan electrode in the unit and the addressing electrode and at scan electrode with keep and produce erasure discharge between the electrode whole.Therefore, the wall electric charge that forms in the erase unit effectively.This is removed waveform and causes and can remain in the unit equably at the wall electric charge that addressing period stably produces the address discharge degree in the unit of display image.
At addressing period, provide the 4th voltage (Vsc) of unit 150 to offer whole scan electrodes the 4th voltage.Be set to the situation of reference electrode at the 4th voltage, provide second voltage of unit 150 (Vs/2) sequentially to offer each scan electrode second voltage via the 4th switch Q10.Keep electrode and be provided with the 5th voltage (Vzb) that the 5th voltage provides unit 200, to prevent the erroneous discharge with scan electrode.
Be added to scan electrode in proper order simultaneously will bearing scanning voltage as mentioned above, synchronously positive addressing voltage be applied to addressing electrode with scanning voltage.Because therefore voltage difference between scanning voltage and the addressing voltage and the wall voltage stack that produces in the reset cycle produce address discharge in the discharge cell that has applied addressing voltage.In selected unit, be formed on and apply the wall electric charge that can produce degree of discharge when keeping voltage by address discharge.Simultaneously, keep electrode and be applied in positive bias voltage (Vzb), make, do not produce erroneous discharge with scan electrode by the voltage difference between addressing period minimizing and scan electrode.
In the cycle of keeping, provide first voltage (Vs/2) to give scan electrode or keep voltage from first voltage applying unit 100.Simultaneously, provide unit 190 to provide second voltage (Vs/2) to give and the electrode electrode of opposite that is provided first voltage (Vs/2) from second voltage.Because the wall voltage in the unit and to keep sparking voltage (Vs) superimposed, thus as long as provide and keep sparking voltage (Vs), just in the selected unit of address discharge at scan electrode with keep to produce between the electrode and keep discharge, that is, demonstration is discharged.
Therefore, can obtain the same characteristic that obtains with the prior art drive waveforms according to the plasma display panel device of first embodiment of the invention, and can save the cost that makes up circuit.
＜the second embodiment 〉
Fig. 6 is the circuit diagram according to the plasma display panel device of second embodiment of the invention.
As shown in Figure 6, the plasma display panel device according to second embodiment of the invention comprises that first voltage provides unit 600, second voltage to provide unit 690, tertiary voltage to provide unit 610 and the 4th voltage that unit 650 is provided.
Be different from the plasma display panel device that has illustrated with reference to figure 4, use the positive bias voltage (Vzb) as first voltage (Vs/2) according to the plasma display panel device of second embodiment of the invention according to first embodiment of the invention.That is to say that at addressing period, offer by first voltage that first voltage is provided unit 600 and to keep electrode Z, the 5th voltage that can omit Fig. 4 provides unit 200.Thereby, can further reduce the use of voltage source and element, and can more effectively save the manufacturing cost of plasma display panel device.Simultaneously, in the second embodiment of the present invention,, also omitted the 3rd switch Q21 of Fig. 4 for saving manufacturing cost.
Plasma display panel device according to second embodiment of the invention comprises that also first voltage provides the unit 600 and second voltage that unit 690 is provided, its be used for with the mode identical according to the plasma display panel device of first embodiment of the invention, first voltage and second voltage with opposed polarity was provided in the cycle of keeping.Provide unit 600 to be connected to scan electrode Y and keep electrode Z according to first voltage of second embodiment of the invention, and second voltage provides unit 690 to be connected to scan electrode Y and keeps electrode Z.For avoiding redundant, with omit according to the plasma display panel device of second embodiment of the invention with according to the identical structure of the plasma display panel device of first embodiment of the invention and the explanation of operating characteristic.
Fig. 7 is the view of explanation according to the drive waveforms of the plasma display panel device of second embodiment of the invention.
As shown in Figure 7, plasma display panel device according to second embodiment of the invention drives with a frame, and this frame is divided into reset cycle of being used for the whole unit of initialization, is used for the addressing period of selected cell and is used to keep keeping the cycle of selected cell discharge.
In addressing period, provide the 4th voltage (Vsc) of unit 650 to be provided to whole scan electrode Y the 4th voltage according to second embodiment of the invention.When the 4th voltage is set to reference voltage, provide second voltage of unit (Vs/2) sequentially to offer each scan electrode Y second voltage via the 4th switch Q10.For preventing and the erroneous discharge of scan electrode Y, keep electrode Z and be provided with first voltage (Vs/2) that first voltage provides unit 600.
Therefore, can obtain the identical characteristic that obtains with drive waveforms according to the plasma display panel device of second embodiment of the invention according to first embodiment of the invention.In addition, can save the cost that makes up circuit according to the plasma display panel device of second embodiment of the invention.Prove absolutely the reset cycle and kept the cycle with reference to figure 5, therefore, will omit its explanation.
Described the present invention like this, obviously the present invention can change in many ways.These do not think to have broken away from the connotation and extension of the present invention, and all these are that conspicuous change is included in the scope of following claim for the technology of the present invention personnel.
Claims (20)
1. plasma display panel device comprises:
Plasmia indicating panel, it comprises scan electrode and keeps electrode;
First voltage provides the unit, and it is connected to scan electrode and keeps electrode, is used for during the cycle of keeping first voltage being offered scan electrode or keeping electrode; With
Second voltage provides the unit, and it is connected to scan electrode and keeps electrode, is used in the cycle of keeping, and second voltage that its polarity is opposite with first polarity of voltage offers and provide the electrode electrode of opposite of first voltage.
2. plasma display panel device as claimed in claim 1, wherein the voltage difference between this first voltage and second voltage is to keep the voltage level of sparking voltage (Vs).
3. plasma display panel device as claimed in claim 2, wherein the voltage level of this first voltage is Vs/2.
4. plasma display panel device as claimed in claim 3, wherein the voltage level of this second voltage is-Vs/2.
5. plasma display panel device as claimed in claim 1 comprises that further tertiary voltage provides the unit, and it is used for during the cycle of setting up tertiary voltage being offered scan electrode.
6. plasma display panel device as claimed in claim 5, wherein this first voltage provide unit and tertiary voltage provide the unit during the cycle of setting up, the combination of first voltage and tertiary voltage offered scan electrode and
Second voltage provides the unit that second voltage is offered and keeps electrode.
7. plasma display panel device as claimed in claim 5, wherein this tertiary voltage provides the unit to comprise and is connected to first switch of first variohm, and provides tertiary voltage by this first switch during the cycle of setting up.
8. plasma display panel device as claimed in claim 1, wherein this second voltage provide the unit during the cycle of removing, second voltage offered scan electrode and
This first voltage provides the unit during the cycle of removing first voltage to be offered and keeps electrode.
9. plasma display panel device as claimed in claim 8, wherein this second voltage provides the unit to comprise the second switch that is connected with the second adjustable resistance device, and provides second voltage by this second switch during the cycle of removing.
10. plasma display panel device as claimed in claim 1 comprises further being used to provide the 4th voltage of the 4th voltage that the unit is provided that wherein the 4th voltage provides the unit at addressing period the 4th voltage to be offered scan electrode.
11. plasma display panel device as claimed in claim 10, wherein the voltage level of the 4th voltage is greater than ground voltage level and less than first voltage level.
12. plasma display panel device as claimed in claim 1, wherein this second voltage provides the unit sequentially second voltage to be offered a plurality of scan electrodes during the scan period.
13. plasma display panel device as claimed in claim 1, wherein this first voltage provides the unit to comprise that first energy provides/reclaim the unit, and it is used to provide positive electricity to be pressed onto scan electrode or keeps electrode, and is used for reclaiming this positive voltage from it.
14. plasma display panel device as claimed in claim 13, wherein the voltage level of this positive voltage is about Vs/4.
15. plasma display panel device as claimed in claim 1, wherein this second voltage provides the unit to comprise that second can provide/reclaim the unit, and it is used to provide negative voltage to scan electrode or keep electrode, and is used for reclaiming this negative voltage from it.
16. plasma display panel device as claimed in claim 15, wherein the voltage level of this negative voltage is about-Vs/4.
17. a plasma display panel device comprises:
Plasmia indicating panel, it comprises scan electrode and keeps electrode;
First voltage provides the unit, and it is connected to scan electrode and keep electrode, is used for first voltage being offered scan electrode or keeping electrode during keeping electrode and being used for the cycle of keeping during the addressing period first voltage being offered; With
Second voltage provides the unit, and it is connected to scan electrode and keeps electrode, is used for offering and provide the electrode electrode of opposite of first voltage at the cycle of keeping second voltage that its polarity is opposite with first polarity of voltage.
18. plasma display panel device as claimed in claim 17, wherein the voltage level of this first voltage is Vs/2.
19. plasma display panel device as claimed in claim 17, wherein the voltage level of this second voltage is-Vs/2.
20. a method that drives plasma display panel device, this plasma display device by a plurality of of combination one image duration display image, each son comprises the cycle of foundation, removes the cycle, addressing period and keeping the cycle, the method comprising the steps of:
During addressing period, first voltage offered and keep electrode; With
During the cycle of keeping, first voltage offered scan electrode and keep in the electrode one, and second voltage that its polarity is opposite with first polarity of voltage offers and provide the electrode electrode of opposite of first voltage.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020040105771 | 2004-12-14 | ||
| KR1020040105776 | 2004-12-14 | ||
| KR1020040105771A KR100658332B1 (en) | 2004-12-14 | 2004-12-14 | Apparatus for Driving Plasma Display Panel and Method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1790460A true CN1790460A (en) | 2006-06-21 |
Family
ID=36788267
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2005101317912A Pending CN1790460A (en) | 2004-12-14 | 2005-12-14 | Plasma display apparatus and driving method thereof |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR100658332B1 (en) |
| CN (1) | CN1790460A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101950531A (en) * | 2010-09-30 | 2011-01-19 | 四川虹欧显示器件有限公司 | Scanning-sustaining electrode drive circuit, plasma display and drive circuit thereof |
| CN101763814B (en) * | 2008-12-31 | 2011-12-07 | 四川虹欧显示器件有限公司 | Drive circuit and method for scanning electrode of plasma display |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100784529B1 (en) * | 2006-04-28 | 2007-12-11 | 엘지전자 주식회사 | Plasma Display Apparatus |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4768134B2 (en) * | 2001-01-19 | 2011-09-07 | 日立プラズマディスプレイ株式会社 | Driving method of plasma display device |
| JP2003345292A (en) * | 2002-05-24 | 2003-12-03 | Fujitsu Hitachi Plasma Display Ltd | Method for driving plasma display panel |
-
2004
- 2004-12-14 KR KR1020040105771A patent/KR100658332B1/en not_active IP Right Cessation
-
2005
- 2005-12-14 CN CNA2005101317912A patent/CN1790460A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101763814B (en) * | 2008-12-31 | 2011-12-07 | 四川虹欧显示器件有限公司 | Drive circuit and method for scanning electrode of plasma display |
| CN101950531A (en) * | 2010-09-30 | 2011-01-19 | 四川虹欧显示器件有限公司 | Scanning-sustaining electrode drive circuit, plasma display and drive circuit thereof |
| CN101950531B (en) * | 2010-09-30 | 2012-09-05 | 四川虹欧显示器件有限公司 | Scanning-sustaining electrode drive circuit, plasma display and drive circuit thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| KR100658332B1 (en) | 2006-12-15 |
| KR20060067011A (en) | 2006-06-19 |
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