CN1664896A - Apparatus and method for driving plasma display panel - Google Patents

Apparatus and method for driving plasma display panel Download PDF

Info

Publication number
CN1664896A
CN1664896A CN2005100515954A CN200510051595A CN1664896A CN 1664896 A CN1664896 A CN 1664896A CN 2005100515954 A CN2005100515954 A CN 2005100515954A CN 200510051595 A CN200510051595 A CN 200510051595A CN 1664896 A CN1664896 A CN 1664896A
Authority
CN
China
Prior art keywords
polarity
pulse
scan
keeping
plasma display
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN2005100515954A
Other languages
Chinese (zh)
Inventor
文圣学
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LG Electronics Inc
Original Assignee
LG Electronics Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by LG Electronics Inc filed Critical LG Electronics Inc
Publication of CN1664896A publication Critical patent/CN1664896A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47K—SANITARY EQUIPMENT NOT OTHERWISE PROVIDED FOR; TOILET ACCESSORIES
    • A47K13/00—Seats or covers for all kinds of closets
    • A47K13/24—Parts or details not covered in, or of interest apart from, groups A47K13/02 - A47K13/22, e.g. devices imparting a swinging or vibrating motion to the seats
    • 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
    • G09G3/291—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
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K15/00—Acoustics not otherwise provided for
    • G10K15/04—Sound-producing devices
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
    • G09G2330/06—Handling electromagnetic interferences [EMI], covering emitted as well as received electromagnetic radiation

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Power Engineering (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Control Of Gas Discharge Display Tubes (AREA)
  • Transforming Electric Information Into Light Information (AREA)

Abstract

Provided is a driving method for a plasma display panel capable of prolonging a life span of the plasma display panel and improving luminous efficiency thereof by preventing an accumulation of positive charges on an address electrode of the plasma display panel. For the purpose in the present invention, voltage pulses having different polarities and sizes are applied to a pair of sustain electrodes of a plasma display panel while sustaining a discharge for the plasma display panel.

Description

Drive the apparatus and method of plasma display panel
Related application
The application requires in korean patent application 10-2004-0015057 number right of priority of submission on March 5th, 2004, and its full content is incorporated herein with for referencial use.
Technical field
The present invention relates to a kind of apparatus and method that drive plasma display panel, particularly relate to the apparatus and method of the driving plasma display panel of minimum electromagnetic interference and raising stability.
Background technology
Plasma display panel (hereinafter to be referred as " PDP ") is applicable to that the ultraviolet ray by the 147nm that produces makes the luminous demonstration of fluorescent material comprise the image of letter or figure in the discharge process as the gas of He+Xe, Ne+Xe or He+Ne+Xe.This PDP can make at an easy rate Bao Heda, and along with nearest development of technologies, this PDP can provide the picture quality that significantly improves.Especially; a kind of three electrode A C surface discharge type PDP have the advantage in lower driving voltage and longer serviceable life; because can reduce the required voltage of discharge by the wall electric charge of assembling when the surface-discharge, and guard electrode by since the sputter of discharge generation do not injure.
Fig. 1 is the three-dimensional structure diagram of the discharge cell of existing three electrode A C surface discharge type PDP.
As shown in Figure 1, the discharge cell of three electrode A C surface discharge type PDP comprises: be formed on upper substrate 10 lower surface scan electrode Y and keep electrode Z; With the addressing electrode X that is formed on the lower substrate 18.Scan electrode Y comprises: a transparency electrode 12Y; With a metal bus electrode 13Y, it has the live width narrower than transparency electrode 12Y, and is disposed in a lateral edges of transparency electrode.And, keep electrode Z and comprise: a transparency electrode 12Z; With a metal bus electrode 13Z, it has the live width narrower than transparency electrode 12Z, and is disposed in a lateral edges of transparency electrode.
Transparency electrode 12Y and 12Z use ITO (tin indium oxide) to make usually, and are formed on the lower surface of upper substrate 10.Metal bus electrode 13Y and 13Z are formed on transparency electrode 12Y and the 12Z usually, by metal for example chromium (Cr) make, and be used to reduce the voltage drop that causes by transparency electrode 12Y with high impedance and 12Z.At scan electrode Y with keep electrode Z and be laminated on a upper dielectric layer 14 and a protective seam 16 by the lower surface of the upper substrate 10 of placement parallel to each other.Upper dielectric layer 14 is assembled the wall electric charge that produces in the plasma discharge process.Protective seam 16 is applicable to avoids the sputter that produces in the plasma discharge process damage to upper dielectric layer 14, and improves the efficient of secondary.Usually use magnesium oxide (MgO) as protective seam 16.
Lower dielectric layer 22 and barrier ribs 24 are formed on the lower substrate 18 that is formed with addressing electrode X.Fluorescence coating 26 is coated on the surface of lower dielectric layer 22 and barrier ribs 24.Addressing electrode X is along with scan electrode Y with keep the cross one another direction of electrode Z and be formed on the lower substrate 18.Barrier ribs 24 prevents that with striped or grid form the ultraviolet ray and the visible light that produce because of discharge from leaking into contiguous discharge cell.Fluorescence coating 26 is ultraviolet ray excited by what produce in the plasma discharge process, and produces in the red, green, blue look visible light any.Inert mixed gas is injected between upper substrate 10 and the barrier ribs 24 and reaches in the discharge space that forms between lower substrate 18 and the barrier ribs 24.
This PDP uses a frame that is divided into a plurality of subdomains of the emission with varying number by the time to drive, thereby realizes the gray scale of image.Each subdomain be divided into be used for the whole screen of initialization the initialization phase, be used for selecting sweep trace and realize keeping the phase of gray scale from the address period of selected scanning line selection unit with according to the number of discharge.
At this moment, the initialization phase is divided into the rising stage (set-up period) of using the acclivity waveform and the decrement phase (set-down period) of using the decline ramp waveform.If wish to show an image with 256 gray scales, the frame period (frame period) that is equivalent to 1/60 second (16.67ms) is divided into 8 subdomain SF1 to SF8, as shown in Figure 2.Each subdomain SF1 to SF8 is subdivided into initialization phase, address period as mentioned above and keeps the phase.The initialization phase of each subdomain SF1 to SF8 is all identical in each subdomain with address period, but the phase of keeping in each subdomain with 2 nThe ratio of (n=0,1,2,3,4,5,6,7 here) increases.
Fig. 3 is the block scheme that is used to drive the device of PDP in the prior art.
As shown in Figure 3, the conventional device that is used for driving PDP comprises: the addressing driver element 32 that is used to drive the addressing electrode X1 to Xm that is arranged at plate 30; Be used for driving the scan drive cell 34 of the scan electrode Y1 to Yn that is arranged at plate 30; Be used for driving be arranged at plate 30 keep electrode Z1 to Zn keep driver element 36; Be used to provide the driving voltage generator 40 of driving voltage to driver element 32,34 and 36; Provide control signal SCS1 to SCS3 timing controller 38 with being used to driver element 32,34 and 36.
Driving voltage generator 40 produces various driving voltages, thereby can produce drive waveforms as shown in Figure 4; And the voltage that is produced offered addressing driver element 32, scan drive cell 34 and keep driver element 36.For example, driving voltage generator 40 produces voltages, as Vsetup, Vw, Vr and Vs, and this voltage is offered scan drive cell 34.It also produces voltage Vs, and this voltage offered keeps driver element 36.And driving voltage generator 40 produces voltage Va, and it is offered addressing driver element 32.
Timing controller 38 produces various changeover control signals, thereby can produce drive waveforms as shown in Figure 4; And the changeover control signal that is produced offered addressing driver element 32, scan drive cell 34 and keep driver element 36.For example, timing controller 38 produces the first changeover control signal SCS1 and the second changeover control signal SCS2, and this signal is offered scan drive cell 34 respectively and keeps driver element 36.And timing controller 38 produces the 3rd changeover control signal SCS3 and data clock (data clock) DCLK, and they are offered addressing driver element 32.
Under the control of data clock DCLK that is provided by timing controller 38 and the 3rd changeover control signal SCS3, addressing driver element 32 is used for the view data that receives from the external world is offered addressing electrode X1 to Xm.
Under the control of the first changeover control signal SCS1 that is exported by timing controller 38, scan drive cell 34 provides reset pulse, scanning impulse scan and keeps pulse sus to scan electrode Y1 to Yn.
Under the control of the second changeover control signal SCS2 that exports by timing controller 38, keep driver element 36 positive polarity voltage (Vs) is provided, keep pulse sus and erasing pulse erase to keeping electrode Z1 to Zn.
With reference to Fig. 4 the drive waveforms that is applied to above-mentioned electrode is described in detail.In the rising stage of initialization phase, acclivity waveform Ramp-up is applied to all scan electrode Y simultaneously.By this acclivity waveform Ramp-up, weak discharge occurs in the unit of whole screen, produces the wall electric charge like this in the unit.In decrement phase, after acclivity waveform Ramp-up was employed, the decline ramp waveform Ramp-down that descends from the positive polarity voltage lower than the peak voltage of acclivity waveform Ramp-up was applied to scan electrode Y simultaneously.Decline ramp waveform Ramp-down produces weak erasure discharge and wipes by unwanted electric charge in the wall electric charge of rising discharge generation and the space charge in the unit, and makes the required wall electric charge of address discharge be retained in equably in the unit of whole screen.
In address period, when the scanning impulse scan of negative polarity sequentially was applied to scan electrode Y, the data pulse data of positive polarity also was applied to addressing electrode X.Because voltage difference between scanning impulse scan and the data pulse data and the wall voltage addition that produces in the initialization phase are so produce address discharge in the unit that data pulse data is employed.In the unit of selecting by address discharge, produce the wall electric charge.
Simultaneously, in decrement phase and address period, the positive dc voltage of keeping voltage levvl (Vs) is applied to keep electrode Z.
Keeping interimly, keeping pulse sus and alternately be applied to scan electrode Y and keep electrode Z.Then, in the unit chosen of discharge that is addressed, because the wall electric charge in this unit and keep pulse sus addition, no matter when each keeps pulse sus is employed, and keeps discharge to produce at scan electrode Y and the surface-discharge form kept between the electrode Z.Finish keeping the discharge finish after, having very, the ramp waveform erase that wipes of small-pulse effect width is applied to keeping electrode Z to wipe the wall electric charge in this unit.
In so conventional PDP, keep interim, scan electrode Y and keep alternately applying sustain pulse sus of electrode Z.At this moment, when keeping pulse sus and be applied to scan electrode Y, provide ground voltage GND to keeping electrode Z.When keeping pulse sus and be applied to keep electrode Z, provide ground voltage GND to scan electrode Y.That is, owing to have heavy current to flow when pulse sus is provided for given electrode Y or Z when keeping, the remaining electrode of keeping pulse sus that do not provide is connected to ground voltage GND, so stable operation.Yet, keep interim, in the mode that replaces with scan electrode Y with keep electrode Z and be connected to and keep pulse sus and ground voltage GND, the switchgear that is contained in scan drive cell 34 and keeps driver element 36 carries out a lot of conversion operations.Therefore, the problem that produces high EMI is arranged.And, in the prior art,, need a lot of switchgears (that is, circuit is long), thereby the problem that produces extra noise is arranged owing to be connected to ground voltage GND for making scan electrode Y and keeping electrode Z.
Usually, in order to stablize the operation of PDP, scan electrode Y and keep electrode Z any one must be connected to ground voltage GND so that voltage levvl can be stablized.But in fact, if scan electrode Y and keep electrode Z any one be connected to ground voltage GND, the generation of the importing into of external noise, EMI etc. can be minimized.But in the prior art, owing to various drive waveforms are applied to scan electrode Y and keep electrode Z, so its is difficult to guarantee stability of PDP.
And, in the prior art, scan drive cell 34 and keep driver element 36 and comprise to recommend the switchgear that pattern is connected respectively to scan electrode Y and keeps electrode Z.If this switchgear similarly is connected to recommend pattern, then need a lot of switchgears.As a result, problems such as manufacturing cost, generation leakage current will appear increasing.
Summary of the invention
Therefore, the present invention is suggested in view of above-mentioned problems of the prior art, and an object of the present invention is to provide a kind of apparatus and method that are used to drive plasma display panel, and wherein, electromagnetic interference (EMI) can be minimized, and stability also can improve.
For achieving the above object, according to a kind of device that drives PDP provided by the invention, comprising: a plurality of scan electrodes of forming and keep electrode are parallel to each other; With a scan drive cell, keeping interimly, alternately provide positive polarity and negative maintaining pulse to scan electrode, wherein keep electrode and be connected to ground voltage supplies, therefore always keep ground voltage.
Scan drive cell comprises: first switchgear is arranged on positive polarity and keeps between voltage source and the scan electrode; The second switch device is arranged on negative polarity and keeps between voltage source and the scan electrode; The 3rd switchgear is arranged between ground voltage supplies and the scan electrode; And the 4th switchgear and diode, be connected to parallel way between the common terminal and scan electrode of first to the 3rd switchgear.
If first switchgear is connected, the positive polarity voltage of keeping voltage source is kept pulse as positive polarity and is applied to scan electrode by first switchgear and diode.
If second switch device and the 4th switchgear are connected, negative polarity is kept pulse and is applied to scan electrode.
Keep after pulse is employed in positive polarity, the 3rd switchgear and the 4th switchgear are connected, and after negative polarity was kept pulse and is employed, the 3rd switchgear was connected.Thereby the voltage of ground voltage supplies is applied to scan electrode.
Scan drive cell comprises: first switchgear is arranged on positive polarity and keeps between voltage source and the scan electrode; The second switch device is arranged on negative polarity and keeps between voltage source and the scan electrode; The 3rd switchgear is arranged between ground voltage supplies and the scan electrode; The 4th switchgear is separately positioned between second switch device and the scan electrode; The 5th switchgear and diode are connected to parallel way between the common terminal and scan electrode of the first and the 3rd switchgear.
If first switchgear is connected, the positive polarity voltage of keeping voltage source is kept pulse as positive polarity and is applied to scan electrode by first switchgear and diode.
If second switch device and the 4th switchgear are connected, negative polarity is kept pulse and is applied to scan electrode.
Keep after pulse is employed in positive polarity, the 3rd switchgear and the 5th switchgear are connected, and after negative polarity was kept pulse and is employed, the 3rd switchgear was connected.Thereby the voltage of ground voltage supplies is applied to scan electrode.
According to the method for driving PDP provided by the invention, its step comprises: interim keeping of subdomain, and alternately provide positive polarity and negative polarity to keep pulse to scan electrode; With interim, provide ground voltage to keep electrode to what be arranged in parallel with scan electrode at subdomain.
In the present invention, owing to keep electrode and always keep ground voltage, so the generation of the importing into of ambient noise, EMI etc. can minimize.And, in the present invention, keep electrode and always keep ground voltage, that is, shorten current flow path.Owing to these reasons, can avoid the generation of extra noise, and can guarantee the stability of PDP.
Description of drawings
More purposes of the present invention and advantage can be from below in conjunction with more fully understanding the detailed description of accompanying drawing, in the accompanying drawing:
Fig. 1 is the three-dimensional structure diagram of the discharge cell of existing three electrode A C surface discharge type PDP;
Fig. 2 shows the frame of PDP;
Fig. 3 is the block scheme that is used to drive the device of conventional PDP;
Fig. 4 is the oscillogram that shows the method be used to drive conventional PDP;
Fig. 5 is the block scheme according to the device of embodiments of the invention display driver PDP;
Fig. 6 is the detailed circuit diagram of scan drive cell among Fig. 5;
Fig. 7 is the pulse of keeping that offers scan electrode that shows the sequential chart of the switch in the corresponding diagram 6;
Fig. 8 is another detailed circuit diagram of scan drive cell among Fig. 5;
Fig. 9 is the pulse of keeping that offers scan electrode that shows the sequential chart of switch in the corresponding diagram 8.
Embodiment
With reference to accompanying drawing the preferred embodiments of the present invention are described in detail.
Fig. 5 is the block scheme that shows the device that drives PDP according to an embodiment of the invention.
As shown in Figure 5, according to a particular embodiment of the invention, the device that drives PDP comprises: addressing driver element 52 drives the addressing electrode X1 to Xm that is arranged in the plate 50; Scan drive cell 54 drives the scan electrode Y1 to Yn that is arranged in the plate 50; Driving voltage generator 58 is applied to driver element 52,54 with driving voltage; With timing controller 56, control signal SCS1, SCS2 are applied to driver element 52,54.At this moment, the electrode Z1 to Zn (not shown) that keeps that is arranged in the plate 50 is connected to ground voltage GND.
Driving voltage generator 58 produces various driving voltages, and provides the voltage that is produced to addressing driver element 52 and scan drive cell 54, thereby can produce predetermined drive waveforms.
Timing controller 56 produces various changeover control signals, and they are offered addressing driver element 52 and scan drive cell 54, thereby can produce predetermined drive waveforms.For example, timing controller 56 produces the first changeover control signal SCS1, and provides it to scan drive cell 54.It also produces the second changeover control signal SCS2 and data clock DCLK, and they are offered addressing driver element 52.
Addressing driver element 52 will be offered addressing electrode X1 to Xm by the view data data that the external world provides according to the data clock DCLK and the second changeover control signal SCS2 that are provided by timing controller 56.
Scan drive cell 54 is according to the first changeover control signal SCS1 that is provided by timing controller 56, and reset pulse, scanning impulse and negative polarity and positive polarity kept pulse application in scan electrode Y1 to Yn.At this moment, scan drive cell 5 will be transformed into positive polarity from negative polarity, and vice versa, the pulse of keeping offer scan electrode Y1 to Yn, thereby produce and keep discharge with the electrode Z1 to Zn that keeps that always uses ground voltage GND.
Fig. 6 is the detailed circuit diagram of scan drive cell among Fig. 5.
As shown in Figure 6, scan drive cell 54 comprises: drive voltage supply unit 60; With the 4th switch S 4, be connected respectively to scan electrode Y1 to Yn.The 4th switch S 4 is arranged between drive voltage supply unit 60 and the scan electrode Y, and will offer scan electrode Y by 60 driving voltages that receive from the drive voltage supply unit.At this moment, the 4th switch S 4 connects in open-drain (open drain) mode.
Therefore, can use enforcements such as MOS TR, FET, IGBT, SCR according to switch of the present invention.If the 4th switch S 4 connects in the open-drain mode, can prevent the generation of leakage current between scan electrode Y1 to Yn etc.Because the 4th switch S 4 also is arranged among the scan electrode Y one by one, the part count that is installed in scan drive cell 54 can be minimized.And, the 4th diode D4 is connected respectively on the 4th switch S 4 with parallel way, and be arranged between drive voltage supply unit 60 and the scan electrode Y (the 4th diode D4 can be diode in the 4th switch S 4 or the external diode that is provided with in addition) here.The driving voltage that the 4th diode D4 is used for being provided by drive voltage supply unit 60 offers scan electrode Y, and is used to prevent that the driving voltage from scan electrode Y from offering drive voltage supply unit 60.
Drive voltage supply unit 60 comprises: first switch S 1 is connected positive polarity and keeps between voltage source+Vs and the 4th switch S 4; Second switch S2 is connected negative polarity and keeps between voltage source-Vs and the 4th switch S 4; With the 3rd switch S 3, be connected between ground voltage GND and the 4th switch S 4.First to the 3rd switch S 1 to S3 is switched under the control of timing controller 56 and disconnects.
Fig. 7 is the pulse of keeping that offers scan electrode that shows the sequential chart of the switch in the corresponding diagram 6.
With reference to Fig. 7 to providing the process of keeping pulse to be elaborated by scan drive cell 54.As shown in Figure 7, according to the present invention, keep interim, keep electrode Z and keep ground voltage GND, and scan electrode Y alternately be supplied to positive polarity keep pulse sus+ and negative polarity keep pulse sus-(in fact, positive polarity and reverse voltage+Vs ,-provide ground voltage GND in the given time between the Vs).Then, because wall voltage in the selected cell and positive polarity or negative polarity are kept the magnitude of voltage addition of pulse sus+ or sus-in last address period, whenever keeping pulse sus+, when sus-is employed, keeping discharge at scan electrode Y with keep between the electrode Z and produce with the surface-discharge form.
Foregoing is described in detail.When positive polarity was kept pulse sus+ and is employed, first switch S 1 was connected.If first switch S 1 is connected, the voltage that positive polarity is kept voltage source+Vs offers scan electrode Y1 to Yn through first switch S 1 and the 4th diode D4.At this moment, scan electrode Y1 to Yn is supplied to positive polarity and keeps pulse sus+.
After positive polarity was kept pulse sus+ and offered scan electrode Y1 to Yn, third and fourth switch S 3, S4 connected.If the 3rd switch S 3 is connected, ground voltage GND offers scan electrode Y1 to Yn through third and fourth switch S 3, S4.
After ground voltage GND offered scan electrode Y1 to Yn, the 3rd switch S 3 disconnects and second switch S2 connects.If second switch S2 connects, the voltage that negative polarity is kept voltage source-Vs offers scan electrode Y1 to Yn through the second and the 4th switch S 2, S4.At this moment, scan electrode Y1 to Yn is supplied to negative polarity and keeps pulse sus-.
After scan electrode Y1 to Yn was supplied to negative polarity and keeps pulse sus-, the 3rd switch S 3 was connected, and the second and the 4th switch S 2, S4 also disconnect.If the 3rd switch S 3 is connected, ground voltage GND offers scan electrode Y1 to Yn through the 3rd switch S 3 and the 4th diode D4.In fact, in the present invention, when repeating to implement this process, positive polarity and negative polarity are kept pulse sus+, sus-and are alternately offered scan electrode Y1 to Yn.
In addition, in address period, second switch S2 keeps connecting.And when second switch S2 kept connecting, the 4th switch S 4 is sequentially connected provided scanning impulse scan to scan electrode Y.At this moment, addressing driver element 52 will offer data line X1 to Xm with the pulse of scanning impulse scan data in synchronization.
As mentioned above, in the present invention, keep electrode Z always (interim at subdomain) at one be supplied to ground voltage GND.Keep electrode Z if ground voltage GND always offers like this, then the generation of the importing into of ambient noise, EMI etc. can be minimized, and can therefore improve the stability of PDP.
And, in the present invention, keep electrode Z and always be connected to ground voltage GND, therefore, as keeping driver element and can be omitted in the prior art, and owing to keep that EMI that the driving of driver element produces etc. can be prevented from etc.In addition, in the present invention, directly connect ground voltage GND, so can prevent the generation of extra noise because keep electrode Z.And, in the present invention, have only a switchgear S4 to be connected to each scan electrode Y in the drain electrode mode of opening circuit.Therefore, the number of parts can minimize, reduce manufacturing cost and therefore prevent interelectrode leakage current.
Simultaneously, in the present invention, scan drive cell 54 can be established by various forms.For example, according to the present invention, scan drive cell 54 can be established as shown in Figure 8.
Fig. 8 is another detailed circuit diagram of scan drive cell among Fig. 5.
As shown in Figure 8, scan drive cell 54 comprises according to the present invention: drive voltage supply unit 64; The 4th switch S 4 and the 5th switch S 5 are separately positioned between the scan electrode Y1 to Yn.
Drive voltage supply unit 64 comprises: first switch S 1 connects positive polarity and keeps voltage source+Vs; The 3rd switch S 3 connects ground voltage GND; With second switch S2, connect negative polarity and keep voltage source-Vs.First to the 3rd switch S 1 to S3 switches on and off under the control of timing controller 56.
The 4th switch S 4 is connected between second switch S2 and the scan electrode Y1 to Yn, and switches on and off under the control of timing controller 56.The 5th switch S 5 is connected between the common terminal and scan electrode Y1 to Yn of the first and the 3rd switch S 1, S3, and switches on and off under the control of timing controller 56.In this case, the 4th switch S 4 connects the 4th diode D4 in parallel, and the 5th switch S 5 connects the 5th diode D5 in parallel.The the 4th and the 5th diode D4, D5 are used to prevent to affact drive voltage supply unit 64 by the driving voltage that scan electrode Y1 to Yn provides.
With reference to Fig. 9 to providing the process of keeping pulse to be elaborated by scan drive cell 54.
As shown in Figure 9, first switch S 1 is connected.If first switch S 1 is connected, the voltage that positive polarity is kept voltage source+Vs offers scan electrode Y1 to Yn by first switch S 1 and the 5th diode D5.At this moment, scan electrode Y1 to Yn is supplied to positive polarity and keeps pulse sus+.
Be supplied to after positive polarity keeps pulse sus+ at scan electrode Y1 to Yn, first switch S 1 disconnects, and the 3rd and the 5th switch S 3 and S5 also connect.If the 3rd and the 5th switch S 3 and S5 connect, ground voltage GND offers scan electrode Y1 to Yn through the 3rd and the 5th switch S 3 and S5.
After ground voltage GND offered scan electrode Y1 to Yn, the 3rd and the 5th switch S 3 and S5 disconnected, and the second and the 4th switch S 2 and S4 also connect.If the second and the 4th switch S 2 and S4 connect, the voltage that negative polarity is kept voltage source-Vs offers scan electrode Y1 to Yn by second switch S2 and the 4th S4.At this moment, scan electrode Y1 to Yn is supplied to negative polarity and keeps pulse sus-.
Keep after pulse sus-offers scan electrode Y1 to Yn in negative polarity, the second and the 4th switch S 2, S4 disconnect, and the 3rd switch S 3 is also connected.If the 3rd switch S 3 is connected, ground voltage GND offers scan electrode Y1 to Yn through the 3rd switch S 3 and the 5th diode D5.In fact, in the present invention, when repeating this process, positive polarity and negative maintaining pulse sus+, sus-alternately offer scan electrode Y1 to Yn.
In addition, in address period, second switch S2 keeps connecting.And when second switch S2 kept connecting, the 4th switch S 4 was sequentially connected to provide scanning impulse scan to scan electrode Y.At this moment, addressing driver element 52 will offer data line X1 to Xm with the pulse of scanning impulse scan data in synchronization.
As mentioned above, in the present invention, keep electrode Z always (interim at subdomain) at one be supplied to ground voltage GND.Keep electrode Z if ground voltage GND always offers like this, then the generation of the importing into of ambient noise, EMI etc. can be minimized, and can therefore improve the stability of PDP.
And, in the present invention, owing to keep electrode Z and always connect ground voltage GND, therefore,, and owing to keep the generation of the EMI that the driving of driver element causes and also can be prevented from as keeping driver element and can be omitted in the prior art.In addition, in the present invention, directly connect ground voltage GND owing to keep electrode Z, so can prevent the generation of extra noise.
Although describe the present invention with reference to specific embodiment, the present invention is not limited to the specific embodiment content, but only determines according to interest field.Those skilled in the art can carry out various change and modification fully and not depart from scope and spirit of the present invention.

Claims (27)

1, a kind of plasma display system comprises:
A plurality of scan electrodes;
A plurality of electrodes of keeping are with the parallel formation of a plurality of scan electrodes; With
The one scan driver element is kept pulse to a plurality of scan electrodes in that interim providing is provided,
Wherein, a plurality of electrodes of keeping are connected to the ground voltage supplies that keeps ground voltage.
2, plasma display system as claimed in claim 1 wherein, is being kept interimly, and what scan drive cell alternately provided first polarity and second polarity keeps pulse to these a plurality of scan electrodes.
3, a kind of plasma display system comprises:
A plurality of scan electrodes;
A plurality of electrodes of keeping are with the parallel formation of a plurality of scan electrodes; With
The one scan driver element, keep interim first polarity and second polarity alternately is provided keep pulse to these a plurality of scan electrodes,
Wherein, these a plurality of electrodes of keeping are connected to the ground voltage supplies that keeps ground voltage.
4, plasma display system as claimed in claim 3, wherein, scan drive cell comprises:
First switchgear, what first polarity was provided keeps pulse to a plurality of scan electrodes;
The second switch device, what second polarity was provided keeps pulse to a plurality of scan electrodes; With
The 3rd switchgear keeps these a plurality of scan electrodes to be in ground voltage.
5, plasma display system as claimed in claim 4, wherein, scan drive cell also comprises the 4th switchgear, be used for alternately providing first polarity keep the pulse and second polarity keep pulse to scan electrode.
6, plasma display system as claimed in claim 3, wherein, the pulse of keeping of keeping the pulse and second polarity of first polarity has reciprocal polarity.
7, plasma display system as claimed in claim 6, wherein, the pulse of keeping of first polarity has positive polarity, and the pulse of keeping of second polarity has negative polarity.
8, plasma display system as claimed in claim 3, wherein, first switchgear is arranged on keeping between the pulse power and this a plurality of scan electrodes of first polarity.
9, plasma display system as claimed in claim 3, wherein, the second switch device is arranged on keeping between the pulse power and a plurality of scan electrode of second polarity.
10, plasma display system as claimed in claim 3, wherein, the 3rd switchgear is arranged between ground voltage supplies and a plurality of scan electrode.
11, plasma display system as claimed in claim 4, wherein, scan drive cell is alternately selected first switchgear and the 3rd switchgear, thereby produces the pulse of keeping of first polarity.
12, plasma display system as claimed in claim 4, wherein, scan drive cell is alternately selected second switch device and the 3rd switchgear, thereby produces the pulse of keeping of second polarity.
13, a kind of plasma display system comprises:
A plurality of scan electrodes;
A plurality of electrodes of keeping are with the parallel formation of these a plurality of scan electrodes; With
The one scan driver element, have be used for keep interim alternately provide have an opposed polarity keep the negative voltage source of pulse to a plurality of scan electrodes,
Wherein, a plurality of electrodes of keeping are connected to the ground voltage supplies that keeps ground voltage.
14, plasma display system as claimed in claim 13, wherein, scan drive cell comprises:
First switchgear, what first polarity was provided keeps pulse to a plurality of scan electrodes;
The second switch device, what second polarity was provided keeps pulse to a plurality of scan electrodes; With
The 3rd switchgear keeps a plurality of scan electrodes to be in ground voltage.
15, plasma display system as claimed in claim 14, wherein, scan drive cell also comprises the 4th switchgear and the 5th switchgear, be used for alternately providing first polarity keep the pulse and second polarity keep pulse to scan electrode.
16, plasma display system as claimed in claim 14, wherein, the pulse of keeping of keeping the pulse and second polarity of first polarity has reciprocal polarity.
17, plasma display system as claimed in claim 16, wherein, the pulse of keeping of first polarity is a positive polarity, and the pulse of keeping of second polarity is a negative polarity.
18, plasma display system as claimed in claim 14, wherein, first switchgear is arranged on keeping between the pulse power and a plurality of scan electrode of first polarity.
19, plasma display system as claimed in claim 14, wherein, the second switch device is arranged on keeping between the pulse power and a plurality of scan electrode of second polarity.
20, plasma display system as claimed in claim 14, wherein, the 3rd switchgear is arranged between ground voltage supplies and a plurality of scan electrode.
21, plasma display system as claimed in claim 14, wherein, scan drive cell is alternately selected first switchgear and the 3rd switchgear, thereby produces the pulse of keeping of first polarity.
22, plasma display system as claimed in claim 14, wherein, scan drive cell is alternately selected second switch device and the 3rd switchgear, thereby produces the pulse of keeping of second polarity.
23, plasma display system as claimed in claim 21, wherein, scan drive cell is alternately selected the 4th switchgear and the 5th switchgear, thereby produces the pulse of keeping of first polarity.
24, plasma display system as claimed in claim 22, wherein, scan drive cell is alternately selected the 4th switchgear and the 5th switchgear, thereby produces the pulse of keeping of second polarity.
25, a kind of method that drives plasma display panel may further comprise the steps:
Interim keeping of subdomain, alternately provide positive polarity and negative maintaining pulse to a plurality of scan electrodes;
Keep interim, provide ground voltage to a plurality of electrodes of keeping of the parallel formation of a plurality of scan electrodes.
26, method as claimed in claim 25, wherein, the negative maintaining pulse is provided by negative voltage source.
27, method as claimed in claim 25, wherein, these a plurality of electrodes of keeping are connected to the ground voltage supplies that keeps ground voltage.
CN2005100515954A 2004-03-05 2005-03-07 Apparatus and method for driving plasma display panel Pending CN1664896A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020040015057A KR101042992B1 (en) 2004-03-05 2004-03-05 Apparatus and Method of Driving Plasma Display Panel
KR1020040015057 2004-03-05

Publications (1)

Publication Number Publication Date
CN1664896A true CN1664896A (en) 2005-09-07

Family

ID=34858854

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2005100515954A Pending CN1664896A (en) 2004-03-05 2005-03-07 Apparatus and method for driving plasma display panel

Country Status (6)

Country Link
EP (1) EP1580714A3 (en)
JP (1) JP2005250489A (en)
KR (1) KR101042992B1 (en)
CN (1) CN1664896A (en)
RU (1) RU2005105956A (en)
TW (1) TW200530984A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100418119C (en) * 2006-05-24 2008-09-10 乐金电子（南京）等离子有限公司 Plasma displaying device

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100705290B1 (en) 2004-05-19 2007-04-10 엘지전자 주식회사 Device for Driving Plasma Display Panel
KR100619417B1 (en) * 2005-03-29 2006-09-06 엘지전자 주식회사 Scan driving system for plasma display panel
KR100719588B1 (en) * 2005-12-28 2007-05-17 삼성에스디아이 주식회사 Plasma display panel
KR100844822B1 (en) * 2006-09-12 2008-07-09 엘지전자 주식회사 Plasma Display Apparatus
KR100793061B1 (en) 2006-09-12 2008-01-10 엘지전자 주식회사 Plasma display apparatus and driving method thereof

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999053470A1 (en) * 1998-04-13 1999-10-21 Mitsubishi Denki Kabushiki Kaisha Device and method for driving address electrode of surface discharge type plasma display panel
KR100406789B1 (en) 1998-09-28 2004-01-24 삼성에스디아이 주식회사 Scan driving circuit of plasma display panel
JP3365324B2 (en) * 1998-10-27 2003-01-08 日本電気株式会社 Plasma display and driving method thereof
JP3642693B2 (en) * 1998-12-28 2005-04-27 富士通株式会社 Plasma display panel device
JP3201603B1 (en) * 1999-06-30 2001-08-27 富士通株式会社 Driving device, driving method, and driving circuit for plasma display panel
KR100324271B1 (en) 1999-07-14 2002-02-25 구자홍 Method of Driving Plasma Display Panel
KR100433213B1 (en) * 2001-09-14 2004-05-28 엘지전자 주식회사 Method and apparatus for driving plasma display panel
KR100705290B1 (en) * 2004-05-19 2007-04-10 엘지전자 주식회사 Device for Driving Plasma Display Panel
KR20060010295A (en) * 2004-07-27 2006-02-02 엘지전자 주식회사 Device and method for driving plasma display panel
US7656367B2 (en) * 2004-11-15 2010-02-02 Samsung Sdi Co., Ltd. Plasma display device and driving method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100418119C (en) * 2006-05-24 2008-09-10 乐金电子（南京）等离子有限公司 Plasma displaying device

Also Published As

Publication number Publication date
KR20050089570A (en) 2005-09-08
KR101042992B1 (en) 2011-06-21
EP1580714A3 (en) 2006-12-27
EP1580714A2 (en) 2005-09-28
JP2005250489A (en) 2005-09-15
RU2005105956A (en) 2006-08-10
TW200530984A (en) 2005-09-16

Similar Documents

Publication Publication Date Title
CN1691105A (en) Plasma display apparatus and method of driving the same
CN1619622A (en) Method of driving plasma display panel
CN1637809A (en) Method and apparatus for driving plasma display panel
CN1776779A (en) Plasma display apparatus and method for driving the same
CN1855196A (en) Plasma display apparatus and driving method thereof
US7551150B2 (en) Apparatus and method for driving plasma display panel
CN1612187A (en) Method for driving plasma display panel and apparatus thereof
CN1664896A (en) Apparatus and method for driving plasma display panel
CN1797512A (en) Plasma display apparatus and driving method thereof
CN1250204A (en) Display front-panel driving method and discharging display device
CN1716360A (en) Plasma display apparatus and method for driving the same
CN1967638A (en) Plasma display apparatus
CN1622152A (en) Plasma display apparatus
CN1776780A (en) Plasma display apparatus and method of driving the same
CN1830013A (en) Apparatus and method of driving plasma display panel
CN1716361A (en) Plasma display apparatus and method for driving the same
US7710372B2 (en) PDP data driver, PDP driving method, plasma display device, and control method for the same
CN1760958A (en) Method of driving plasma display panel
CN1700273A (en) Plasma display apparatus and driving method thereof
JP2005250489A5 (en)
CN1862636A (en) Plasma display apparatus and driving method thereof
CN1609935A (en) Panel driving method, panel driving apparatus and display panel
CN1892761A (en) Plasma display apparatus and driving method thereof
CN1773581A (en) Driving method of plasma display panel, and plasma display device
CN1612189A (en) Method and apparatus for driving plasma display panel

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C02 Deemed withdrawal of patent application after publication (patent law 2001)
WD01 Invention patent application deemed withdrawn after publication