TW200530984A - Apparatus and method for driving plasma display panel - Google Patents

Abstract

Disclosed herein is an apparatus and method for driving a plasma display panel, wherein electromagnetic interference is minimized and stability is improved. According to the present invention, the apparatus for driving a PDP includes a plurality of scan electrodes and sustain electrodes, which are formed parallel to each other, and a scan driving unit for alternately supplying sustain pulses of the positive polarity and the negative polarity to the scan electrodes during a sustain period, wherein the sustain electrodes are connected to a ground voltage source, and thus always keep a ground voltage.

Description

200530984 IX. Description of the invention: [Technical field to which the invention belongs] The present invention relates to a device and method for driving a plasma display panel, and more particularly to a device and a device for driving a plasma display panel that minimize electromagnetic interference and improve stability. method. [Prior technology] Plasma Display Panel (PDP) is a 147nrn ψ external line generated when a gas such as helium + gas, atmosphere + gas or helium + neon + gas is discharged, so that the light filling material emits light. It is also used to display references containing characters or graphics. With the recent development of related technologies, this kind of plasma board can be manufactured and can be given gifts such as ㈣ bribe i 疋 a pack of extremely low driving force of the surface discharge type known as low drive thunder burst With light and redundant power [and longer product life 'in the case of electricity, the wall that accumulates on the surface ^ because it is taught and protects the electrode from discharge # 丨 & άΑ 仃 卜 lowers the voltage required for discharge' suitable Yi Wenyu's splash effect. Please refer to the figure, the discharge unit of the two-thousand-thousand-thousand-thousands panel, the electroenergetic scanning electrode γ on the surface of the heart, and the d formed on the lower surface of the upper substrate 1G. ... ... through transparent ^ includes the electrode 12Y, after the line width of one edge electrode 12Υ of the bright electrode, the metal bus electrode 13V I on the image side and is located in the Υ. In addition, the second dimension, the electrical surface discharge, please refer to the figure-: the heart !: a perspective view of the early structure. The bottom electrode Υ and the bottom electrode 10 of the substrate 10 ^ sustain electrode Z, and an address electrode X formed on the long surface of the VAA. (+) Understand that the electrode Y includes a #moxibustion plate 18 formed on the electrode 18Y with a line visibility less than that of the lunar s 4th moon electrode 12Y, with 200530984 package Λ-transparent electrode l2z, and-with a line width less than Transparent electrode 13Z A metal bus-discharge point on one edge of the transparent electrode. The electrodes 12Y and 12Z are basically made of indium tin oxide (IT0) 13Υ on the upper substrate 1G staple. The genus busbar electrode is basically made of chrome ⑹, which is formed on the transparent electrode 及 and is used to reduce the transition caused by the transparent electrode 高 2γ = with high resistance. An upper dielectric layer and a protective layer are laminated on the lower surface of the upper substrate 1 () on which the trace electrodes are arranged in parallel with each other. Wall charges generated during the plasma discharge are accumulated on the upper dielectric sound 14. The dopant layer 16 is used to protect the upper dielectric layer 14 from the effects of splatter generated during the plasma discharge, and to improve the binary rate. The protective layer I is generally formed using an oxide ball (MgQ), and a lower surface 22 and a barrier wall 24 are formed on the lower substrate 18 on which the address electrode X is formed. Surface of the underlying dielectric layer 22 and the barrier wall 24 = coating-phosphorescent layer 26. An address electrode? Is formed on the lower base plate 18 and the scan electrode? In a direction where the electrode Z intersects. The barrier wall μ-shaped or d-shaped prevents ultraviolet rays and visible hearts generated by the sister electricity from leaking into the adjacent t discharge soap 7L. The disc layer 26 is excited by ultraviolet rays generated during the plasma discharge to generate any one of red, green, and blue visible light. 2 An inert mixed gas is injected between the upper substrate 10 and the barrier wall M to A discharge space defined between the lower substrate 18 and the barrier ribs 24. And the plasma display panel is driven by a diurnal plane, the diurnal plane is cut—a number of sub-fields, and these sub-fields have a non-emission number to achieve the shadow =

(I 200530984 gray scale. Each—fresh image and shot is a rounded, starting period for selecting—scanning lines and selecting from the selected scanning line—Γ At this time, the initial period is divided into Supply-slope establishment period, and supply-removal period of slope drop waveform. For example :: mi display-images with 256 gray scales, which is corresponding to the coffee t-denier period (16.67ms), divided The eight subfields s mother-subfield SF1 _SF8 are further subdivided into—the initial period, the period, and the—maintenance period. Each of the SF1 to SF8 subfields is addressed weekly__1 and in each == / listening Γ ^ Γ, 1, 2'3, 4, 5, 6, 7)-^ assigned to it in the field. . Brother—The picture shows the plasma display panel of -f know technology

view. J. III. In the figure, the driving device package electrode X of the conventional electropolymer display panel includes a core electrode 32, which is used to drive the fixed power XI placed in the-panel 30 to a scan driving unit 34, and scan electrodes in the panel 30. γι to the driver placed in the driver placed in the panel 3Q, as early as 7 ^ 36 'It uses peak output of 40 gm, quasi waiting electrodes Z1 to Zn;-drive voltage and 叩 /, to supply the drive voltage to the Drive units 32, 34, and 36; a controller 38, which is used to supply control signals 主 to 主, and the main unit 32, 34, and 36 are moved. The dynamic voltage generator 4Q generates a variety of driving voltages, so it can generate the driving waveforms shown in the figure and supply the generated voltage to the standard 7 200530984 ί: Wu, the driving unit 3 4 and the maintenance driving unit 3 6. For example, the drive voltage generator 40 generates voltages such as ν_ρ,, r, and Vs, and supplies the voltage to the scanning crane unit to generate a voltage Vs, and supplies the voltage to the sustaining drive unit%. This / in addition, the living device 4. Generate-voltage% and supply it to this address

The timing controller 38 generates a variety of switching control signals, so it can generate the axis waveform as shown in __, and provide the serial number to the address drive unit 亓 U — ❺ early 7 ^ 32, _ drive unit it34 and the maintenance Drive early. + For example, the timing controller 38 generates a first switching signal SCD and a second switching control signal milk 2, and respectively = "___ drive unit 34 and the maintenance drive unit%. And: :: Control The generator 38 generates a third switching control meter ❹⑴C, which is said to supply mosquito_material element%.-Bei 枓 an's ^ two action early where 32 'is provided by the timing controller 38 ΞΓ = recognize and the third The switching control signal s (CD2) is used to supply the talents XI to Xm that receive the va va _ from the outside. ~ The first-switching control signal scsi, like the poor data to the address, is controlled by the timing controller, 38 Under the control of a wheel pulse 'a scan pulse scan and —, a reset Y1 to Yn is supplied. A pulse is sus to the scan electrode. The hydration sustains the drive unit, and the controller switches the second switching control signal sc 4 when it comes out. Under the control of the 38th round, a positive voltage 200530984 is supplied, the ancient mystery secrets the electrode zmn holding the pulse SUS, and a eliminating pulse ⑽e to the dimension ^ Μ ^ Consider the fourth figure, the drive to the electrode The waveform is made and / or described in an initial period of the initial period, an inclined plane The upper / skin y Ramp 'is supplied to all the scanning electrodes at the same time. The ramp-up waveform Rarv ^ is discharged, thus generating a faint in the cell of the single-fixed screen. The wall charge is generated in the early stage. During the period, the material rises; after the skin-shaped Ramp is supplied, from one of the peak voltages p p-up below the slope where the slope rises and the waveform falls, the positive voltage goes to φ v cattle waveform RamP-d0wn At the same time is supplied to the scan-weak cancellation; It's falling waveform Ramp-dGwn, which generates n + w + electricity at the unit to eliminate the wall charge and

St:;, necessary charge, and also makes -address discharge Section: Electricity is kept uniformly in the unit of the whole screen. Sequentially supplied to the inside, when the scan pulse SCan of the negative polarity is simultaneously lighted to the pole J ', the life-threatening f produced by the data pulse -a of the positive polarity, the difference between the value of @@ and the soil, and This initial cycle generates electricity: Electricity is accumulated, so the address charge is generated within 70% of the data pulse and wall charges are generated. The injective νίΓ selected by the miscellaneous discharge is maintained at a value of 1 (VS = positive polarity DC electric house) during the money-out period and the addressing period, and is supplied to the maintenance. ⑽ is alternately supplied to the scanning electrode 200530984, the scanning electrode γ, the dimensioning electrode, and the maintenance electrode ζ. Then, because it is accumulated on the inner wall of the unit at each f ^ -sustaining pulse sus by the address discharge In the early stage of the holding electrode Z ::, the one-dimensional surname # is generated after the sweep electrode Y and the only surface discharge form #, and after the holding discharge is completed, there will be a transcript with a small pulse width. Electricity. At this dimension ㈣e 'is supplied to Qing holding electricity, because the ramp waveform is removed here-the conventional plasma display panel t, Yu :: wall charges. The scan electrode Y and the sustain electrode z are alternated. Ground supply 庳 = cycle, at this time, when the sustain pulse sus # is supplied to the shore; when f dimension is waiting, the ground electromigration GND is supplied; ^ Hai 岣 electrode pulse is called skin supply to the sustain electrode z Holding, pole Z. Be careful to supply to the scan electrode γ. That is, ^ ground voltage ^ is supplied to A selected electrode γ or z, = is the time when the sustaining pulse burst should be maintained for the pulse SUS // the remaining electrodes and S ^ _, so the operation is stable ^. = Is connected to the ground $ In order to -Alternately, the scan pulse is connected to the sustain pulse sy at the sustain cycle 1; the pole Y and the dimension, the drive driver W and the sustain drive = electric m include a variety of switching operations. Therefore, where The switching problem in 36. In addition, in the conventional technology, there is a high voltage (that is, a long line), which makes the scanning electrode need a variety of switching events and the ground voltage GND, so there is a maintenance electrode 2 that is far away. Generally speaking, in order to stabilize ~ ♦ the issue of external noise. -One scan electrode γ and operation of maintaining the C display panel

All must be connected to J] 0 200530984 GND, so that it can be stable-such as a scan electrode Y and Dimension ^. However, in fact, if any GND is used, it is possible to minimize the external and / pole Z being connected to the ground voltage. However, in the conventional technology, the noise is induced. 1 The generation of magnetic interference The scan electrode Y and the vera are supplied to the display panel for stability due to various driving waveforms. Therefore, it is difficult to ensure-plasma display. In addition, in the conventional technique, the driving unit S 36 includes, in a manner that the scan driving unit 34 and the maintenance connection to the scan electrode γ = hpull), respectively. The switching device is such a switching device of pole Z. If switch device. Therefore, the right-of-right connection will require many problems. The problem caused by the increase in clothing and leakage current [Contents of the Invention] Therefore, the present invention is a root device and a device and method for the problems arising from the know-how of the present invention. The bismuth: two kinds of driving plasma display panel To achieve the above ::: = minimize and also improve stability. The device of the display panel is a driving plasma electrode provided in accordance with the present invention. The m includes a plurality of scanning electrodes and — “electrodes, which are maintained in parallel with each other. The body also provides positive and negative polarity. The 'Katoda' electrode, where the sustain electrode is connected to 2 holding pulses until the water maintains a ground voltage. The voltage source, and since 200530984, the scan drive unit contains. —Μ — Positive polarity-sustaining electrical cover source And the Austrian device, which is placed in the device, which is placed between the negative two: the two poles, the second switch: a third switch, the penetrating voltage source and the scan electrode H and "; the secret voltage source and the scan are connected to the fourth and fourth diodes, respectively, with a parallel end and the scan electrode. A common to the first switching device is that if the first switching through is wished to be opened as the positive polarity of the heart, the positive electrode body that maintains a constant source of electricity is supplied to the sweep through the first switching device And the second, if the sustain pulse of the second switching jealous ^ μ polarity is turned on by the four switching device of y σ, the negative right η should reach the scan electrode. -Polarity sustain pulse The younger four-cut _set shooter, _ three switching devices and, the third switching split 1 is turned on. The two sustain pulses are supplied to the scan electrodes. Alas, the voltage of the ground voltage source can also be included by the Hai scan drive unit. Based on the positive polarity—maintaining Leimao 3 · —the first switching device, which is set to the switching device, 1 is set to the scanning electrode Between;-between the second electrode;-the third switching device: // power source and the scanning electrode ^ ~, is placed between the ground voltage source and Yu Xi 坌 θ ^ several first Four switching devices, 1 4 \ Fang "Hai switching 1 set and the scan = it is placed between the electrodes separately, and a plurality of fifth 12 200530984 switching devices and diodes, which are connected in a parallel manner respectively Between a common end of the first and third switching devices and the scan electrode. If the first switching device is turned on, the positive polarity voltage of the sustaining voltage source is regarded as the positive polarity sustaining pulse, and passes through the first A switching device and the diode are supplied to the scan electrode. If the second switching device and the fourth switching device are turned on, the sustain pulse of the negative polarity is supplied to the scan electrode. In the positive polarity After the sustain pulse is supplied, the third The switching device and the fifth switching device are turned on, and after the sustain pulse of the negative polarity is supplied, the third switching device is turned on. Therefore, the voltage of the ground voltage source is supplied to the scan electrode. According to the present invention The provided method for driving a plasma display panel includes the steps of: (a) alternately supplying positive and negative sustain pulses to a scan electrode during one sustain period of a sub-picture field; and (b) one sub-field During the field period, a ground voltage is supplied to the sustain electrodes, which are formed parallel to the scan electrodes. In the present invention, since the sustain electrodes always maintain a ground voltage, the introduction of external noise and the generation of electromagnetic interference can be To minimize. In addition, in the present invention, the sustain electrode is permanently connected to a ground voltage, that is, the flow path of the circuit is shortened. Therefore, it can prevent the generation of additional noise and thus ensure the plasma display panel. [Embodiment] The following will describe the preferred embodiment of the present invention in more detailed manner with reference to the accompanying drawings. The fifth figure is A block diagram showing a device for driving a plasma display panel according to an embodiment of the present invention. Please refer to FIG. 5, which shows a device for driving a plasma display panel according to an embodiment of the present invention, which includes an address driving unit 52 Which is used to drive the address electrodes XI to Xm placed in a panel 50;-a scan drive unit 54 which is used to drive the scan electrodes Y1 to Yn placed in the panel 50;-a drive voltage generator 58, It is used to supply a driving voltage to the driving units 52, 54; and a timing controller 56 is used to supply control signals SCSI, SCS2 to the driving units 52, 54. At this time, the maintenance placed in the panel 50 is maintained The electrodes Z1 to Zn (omitted) are connected to a ground voltage GND. The driving voltage generator 58 generates a plurality of driving voltages and supplies the generated voltages to the address driving unit 52 and the scanning driving unit 54, thereby generating a Predetermined driving waveform. The timing controller 56 generates various switching control signals and supplies them to the address driving unit 52 and the scanning driving unit 54, so that a predetermined driving waveform can be generated. For example, the timing controller 56 generates a first switching control signal SCSI and supplies it to the scan driving unit 54. It also generates a second switching control signal SCS2 and a data timing DCLK, and supplies them to the address driving unit 52. The address driving unit 52 supplies the image data provided from the outside to the address electrodes XI to Xm based on the data DCLK and the second switching control signal SCS2, both of which are supplied by the timing controller 56. 14 200530984 The scan driving unit 54 supplies a reset pulse, a scan pulse, and the negative and positive sustain pulses to the scan electrode according to the first switching control signal SCSI supplied by the timing controller 56 Y1 to Yn. At this time, the scan driving unit 54 supplies the sustain pulse (which switches between the negative polarity and the positive polarity, and vice versa) to the scan electrodes Υ1 to Υη, so that the ground voltage GND is always supplied with the Together with the sustain electrodes Z1 to Zη, a sustain discharge is generated. Figure 6 is a detailed circuit diagram of one of the scan drive units shown in Figure 5. Referring to the sixth figure, the scan driving unit 54 includes: a driving voltage supply unit 60; and fourth switching devices S4 connected to the scan electrodes Υ1 to Υη, respectively. The fourth switching devices S4 are disposed between the driving voltage supply unit 60 and the scan electrode Υ, and supply the driving voltage received by the driving voltage supply unit 60 to the scan electrode Υ. At this time, the fourth switching devices S4 are connected in an open drain manner. _ Here, according to the switching device of the present invention, a metal oxide semiconductor (MOS), a transmission receiver (TR), a field effect transistor (FET), an insulated gate bipolar transistor (IGBT), and a silicon controlled rectifier ( SCR) and the like. If the fourth switching devices are connected in an open-drain manner, current leakage between the scan electrodes Y1 to 电极 η and the like can be prevented. Since the fourth switching devices are also placed one by one on the scan electrodes Υ, the number of components mounted on the scan driving unit 54 can be minimized. In addition, the fourth diode D4, which is connected to the fourth switches, the voltage supply unit 60, and the scan line in parallel in 200530984, can be further placed in the driving diode D4. This and the third = between (here, the fourth or additional placed external two; / body: cut two ... ^ ^ ^ ^ g the four quadrupole D4 proud disk as the driving voltage supply unit The step size is used as a γ, and also to prevent the scan from coming; the scanning electrode is supplied to the driving voltage supply unit 6. The driving electrode of Tian "is connected by it; == solution 60 contains:-第-开关Device ... between devices S4;-voltage source + vs and one of the fourth switches to maintain the power source of the power plant connected to the negative third switching device S3, directly connected to the knife: between S4; and-switch The device S4 is connected between the ground voltage and the fourth 4. The first to third switching devices (to S3) are turned on and off under the control of the controller of the Xuan handle. Set it—shows the corresponding The sustain pulses are supplied to the scan electrodes in Gala as shown in the sixth figure to switch the composition of the fruit. i: 之 [ί ::: Figure: The sustaining unit pulses of the sustaining electrode pulse and the seedlings of the driving unit are alternately supplied to the sustaining pulse sUS + of the positive polarity and the sustaining pressure of the sustaining pulse of the negative polarity 于 (continuously, The ground electrical voltage m vs. evening, and the order, at the far positive polarity voltage + Vs * the negative period is _. Then, due to the previous addressing:-Select the -wall charge in the early 70, and accumulate the "Positive polarity" J6 200530984 The voltage value of the pulse SUS + or the negative sustain pulse SUS-, so whenever the sustain pulse SUS + or SUS- is supplied, it is in the form of a surface discharge between the scan electrode Y and the sustain electrode Z. A sustain discharge is generated. This will be described in more detail. When the positive polarity sustain pulse SUS + is supplied, the first switching device S1 is turned on. If the first switching device S1 is turned on, the positive polarity sustain voltage is turned on A voltage of source + Vs is supplied to the scan electrodes Y1 to Yn via the first switching device S1 and the fourth diodes D4. At this time, the scan electrodes Y1 to Yn are supplied to the positive polarity maintenance Pulse SUS +. The sustain pulse sus + is supplied at this positive polarity. After the scan electrodes Υ1 to Yn, the third switching devices S3 and fourth switching devices S4 are turned on. If the third switching device S3 is turned on, the ground voltage GND passes through the third switching devices S3 and the first Four switching devices S4 are supplied to the scan electrodes Y1 to Yn. After the ground voltage GND is supplied to the scan electrodes Y1 to Yn, the third switching device S3 is turned off and the second switching device S2 is turned on. If the second switching device S2 is turned on, the voltage of the negative-side sustaining voltage source -Vs is supplied to the scan electrodes Y1 to Yn via the second switching device S2 and the fourth switching device S4. At this time, the scan electrodes Y1 to Yn are supplied to the negative polarity sustaining pulse SUS- 0. After the negative polarity sustaining pulse SUS- is supplied to the scan electrodes Y1 to Yn, the third switching device S3 is turned on, and the The second switching device S2 and the fourth switching devices S4 are turned off. If the third-cut 200530984 switching device S3 is turned on, the ground voltage GND is supplied to the scan electrodes Y1 to Yn via the third switching device S3 and the fourth diodes D4. Actually, in the present invention, when this step is repeatedly performed, the positive-polarity sustaining pulse SUS + and the negative-polarity sustaining pulse SUS- are alternately supplied to the scan electrodes Υ1 to Υη. On the other hand, the second switching device S2 remains on for a certain address period. In addition, when the second switching device S2 remains on, the fourth switching devices S4 are sequentially turned on to supply the scan pulse scan to the scan electrode Y. At this time, the address driving unit 52 supplies data pulses synchronized with the scan pulse scan to the data lines XI to Xm. As described above, in the present invention, the sustain electrode Z (within a sub-field period) is always supplied to the ground voltage GND. If the ground voltage GND is always supplied to the sustain electrode Z in this way, the introduction of external noise, the generation of electromagnetic interference, and the like can be minimized, and the stability of the plasma display panel can be improved accordingly. Furthermore, in the present invention, the sustain electrode Z is directly connected to the ground voltage GND. Therefore, the maintenance driving unit as in the conventional art can be omitted, and electromagnetic interference and the like generated by driving the maintenance driving unit can be prevented. In addition, in the present invention, since the sustain electrode Z is directly connected to the ground voltage GND, it is possible to prevent additional noise from being generated. Furthermore, in the present invention, only one switching device S4 is connected to each of the scan electrodes Y in the off-drain mode. Thus, the number of components can be reduced, manufacturing costs can be reduced, and current leakage between the electrodes can be prevented accordingly.

18 200530984 The same day may be used in the present invention. For example, the driver can be different early. In addition, according to the present invention, the scan bow area is described. . It can be configured as shown in the eighth figure. Take Tian Jiandong Zaowu 54 The eighth figure is as detailed in the fifth figure. Please refer to the eighth figure for another description of the drive unit. According to this publication, a drive voltage is provided for the storage unit. It is placed on the scan electrode, J4 switching device S4, and the driving voltage supply unit 6 is S5. It is connected to the positive pole material 3 + · P city device M, S3, which is connected to the ground voltage GNDI: and 1 Three switching clothes S2, which is connected to the negative-dimensional switching device switching devices (S1 to S3), /,-the original _Vs〇 the first to the third are turned on and off. Under the control of the fourth switching dream device, the device S2 and the scanning electrode γ = are respectively connected under the control of the second switching controller 56 between 11 and under the timing control S5, respectively The ground is connected to the: open and close. A common end of the fifth switching devices S3 and the scanning electrode knife, the clothes SI and the third switching device timing controller 56 are held by / to Υη, and are between The fourth switching device s 4 ^ is turned on / off. Here, the D4, and the fifth cut-off Connected to the fourth diode, the fifth diodes / 5 are connected to the polar body Ό5 in a parallel manner, for preventing—the fourth diode D4 and the fifth two—by the scanning electrode The driving power supplied by Υ1 (§ 19 200530984) is supplied to the driving electrode supply unit 64. Now, Cang Kaodi's figure 9 will describe in detail the process of supplying the sustaining pulse from the scanning driving element 5 4. Please refer to the ninth In the figure, the first switching device S1 is turned on. If the first switching device S1 is turned on, the voltage of the positive polarity sustaining voltage source + Vs passes through the first switching device S1 and the fifth diode D5, Is supplied to the scan electrodes Y1 to Yn. At this time, the scan electrodes Y1 to Υη are supplied to a sustain pulse sus + of a positive polarity. After the scan electrodes Υ1 to Υη are supplied to the sustain pulse sus + of a positive polarity, the first A switching device S1 is turned off, and the third switching device S3 and the fifth switching device S5 are also turned on. If the third switching device S3 and the fifth switching device S5 are turned on, the ground voltage GND passes through the first Three switching devices S3 and fifth The switching device S5 is supplied to the scan electrodes Υ1 to Υη. After the ground voltage GND is supplied to the scan electrodes Υ1 to Υη, the third switching device S3 and the fifth switching devices S5 are turned off, and the first switching device S5 is turned off. The second switching device S2 and the fourth switching devices S4 are also turned on. If the second switching device S2 and the fourth switching devices S4 are turned on, the voltage of the negative sustaining voltage source -Vs passes through the first Two switching devices S2 and the fourth switching devices S4 are supplied to the scan electrodes Y1 to Υη. At this time, the scan electrodes Y1 to Υη are supplied to the sustain pulse SUS- of negative polarity. After the scan electrodes Υ1 to Υη are supplied to the sustain pulse sus- of negative polarity, the second switching device S2 and the fourth switching devices S4 20 200530984 are turned off, and the third switching device S3 is turned on. If the third switching device S3 is turned on, the ground voltage GND is supplied to the scan electrodes Y1 to Yn via the third switching device S3 and the fifth diode D5. Actually, in the present invention, when this step is repeatedly performed, the positive polarity sustaining pulse SUS + and the negative polarity sustaining pulse SUS- are alternately supplied to the scan electrodes Υ1 to Υη. On the other hand, the second switching device S2 remains on for a certain address period. In addition, when the second switching device S2 is kept on, the fourth switching devices S4 are sequentially turned on to sequentially supply the scan pulse scan to the scan electrode Υ. At this time, the address driving unit 52 supplies the data pulses synchronized with the scan pulse scan to the data lines XI to Xm. In the present invention, the sustain electrode Z (within a sub-field period) has been This ground voltage GND is supplied. If the ground voltage GND is always supplied to the sustain electrode Z in this way, the introduction of external noise, the generation of electromagnetic interference, and the like can be minimized, and the stability of a plasma display panel can be improved accordingly. Furthermore, in the present invention, since the sustain electrode Z is directly connected to the ground voltage GND, the sustain driving unit as in the conventional art can be omitted. And it can prevent electromagnetic interference caused by driving and maintaining the drive unit. In addition, in the present invention, since the sustain electrode Z is directly connected to the ground voltage GND, it is possible to prevent additional noise from being generated. Although the present invention is described with reference to specific exemplified embodiments, 200530984 is not limited to these conventional embodiments, but depends on the scope of patents attached later. It should be understood that those skilled in the art can change or modify the embodiments without departing from the spirit and scope of the present invention.

22 200530984 [Simplified illustration of the drawing] The Γ of the drawing: the purpose and advantages of the step, will be more fully understood through the following attached °, Tian Mingming, in the drawings. · The first picture is an example A perspective view of the structure of a discharge unit of a three-electrode alternating-current surface discharge plasma display panel in the technology; "'is a daytime surface of a plasma display panel; and, a plasma display panel of a known technology A block diagram of the driving device; A waveform of the driving stroke of the plasma display panel of the display-conventional technology; A block diagram showing the device according to the tree shape— # 施 不 板; The timing of the switching of the scan driving unit shown in the figure-the detailed diagram shown in the sixth figure, the sustaining pulse of the two w to the tracing electrode; as described in the figure five + Congshi-α $ "々 其 知Draw another detailed circuit diagram of the drive unit, as well as display the timing corresponding to the switching of the supply of the holy buckle + map as shown in the eighth figure-the sustain pulse that suppresses the pen pole. Key component symbol description] . 'Pitudi four pictures fifth picture sixth picture Seventh Picture Eighth Picture Ninth Picture Main 23 200530984

10 Upper substrate 12Y Transparent electrode 12Z Transparent electrode 13Y Metal bus electrode 13Z Metal bus electrode 14 Upper dielectric layer 16 Protective layer 18 Lower substrate 22 Lower dielectric layer 24 Barrier wall 26 Phosphor layer 30 Panel 32 Addressing drive unit 34 Scan drive Unit 36 Maintenance drive unit 38 Timing controller 40 Drive voltage generator 50 Panel 52 Addressing drive unit 54 Scan drive unit 56 Timing controller 58 Drive voltage generator 60 Drive voltage supply unit 64 Drive voltage supply unit D1 First diode D2 2nd diode D3 3rd diode D4 4th diode D5 5th diode data pulse DCLK data timing erase erase pulse / eliminate slope waveform GND ground voltage Ramp-down slope fall waveform 24 200530984

Ramp-up ramp rising waveform SI first switching device S2 second switching device S3 third switching device S4 fourth switching device S5 fifth switching device scan scan pulse SCSI first switching control signal SCS2 second switching control signal SCS3 third switching Control signal SF Sub-field sus sustain pulse Va voltage Vr voltage Vs sustain voltage (source) -Vw voltage X address electrode Y scan electrode z sustain electrode 25

Claims (1)

200530984 X. Application for patent Fangu ·· = electrically excited display device, comprising: 稷 several scanning electrodes; forming; and a continuous electrode, parallel to the plurality of scanning electrodes to form a scan driving unit _ to the plurality of ^ Electrode is used to supply the sustaining pulse ground voltage source and the holding electrode during the ―maintenance period‖. It is connected to the ―holding‖ and ―ground voltage connection. The driving unit is not installed in the water song, wherein the nature and a first power supply alternately supply a third power supply to the plurality of scanning power :. Nongxia, 夏 includes: a plurality of scan electrodes; a plurality of sustain electrodes, 10%; and a plurality of scan electrodes in parallel terrain a scan drive single medium. A first-polarity and 1, _ secret in-dimension __, alternating Ground supply electrode;-Record a sustain pulse to the plurality of scans, wherein the plurality of sustain electrical ground voltage sources. Maintaining a ground voltage connection 4 =: The plasma driven early element described in item 3 of the Green Patent Range includes: clothing set where the scan 26 200530984 a first switching device for supplying the maintenance of the first polarity Pulse to the plurality of scan electrodes, a second switching device for supplying a sustain pulse of the second polarity to the plurality of scan electrodes, and a third switching device for maintaining the plurality of scan electrodes at the Ground voltage. 5. The plasma display device according to item 4 of the scope of patent application, wherein the scan driving unit further includes a fourth switching device for alternately supplying the sustain pulse of the first polarity and the sustain of the second polarity. Pulse to the scan electrode. 6. The plasma display device as described in item 3 of the scope of patent application, wherein the sustain pulses of the first polarity and the sustain pulses of the second polarity have opposite polarities. 7. The plasma display device according to item 6 of the scope of patent application, wherein the sustain pulse of the first polarity has a positive polarity, and the sustain pulse of the second polarity has a negative polarity. 8. The plasma display device according to item 3 of the scope of patent application, wherein the first switching device is placed between a sustain pulse voltage source of the first polarity and the plurality of scan electrodes. 9. The plasma display device according to item 3 of the scope of patent application, wherein the second switching device is placed between a sustaining pulse voltage source of the second polarity and the plurality of scan electrodes. 10. The plasma display device according to item 3 of the scope of patent application, wherein the third switching device is placed between the ground voltage source and the plurality of scanning electrodes. 27 200530984 11 • If the application is true, &%; The scan drive sheet, the electromotive display device described in item 4, of which 12 • As in the patent application 1 " brother, the maintenance pulse of polarity. -The plasma display device of the scan driving unit, in which the father selects the 笫 -n three switching device, "the generating device of the second polarity and the thirteenth plasma display device. , Which contains · To be pulsed. A plurality of scan electrodes, a plurality of victors; and u "in parallel to the four scan electrodes in a terrain cycle, the driving unit is alternately known to be used for maintaining the scan electrodes; S has different polarities The sustaining pulse is connected to the plurality of sustaining electrodes, which are connected to—holding—grounding. The scanning driving unit includes: an electro-hydraulic display device, wherein the first switching setting is: It is used for a plurality of scanning electrodes; X egg-shaped sustaining pulses to the three switching devices, which are used to maintain the plurality of scanning electrodes at the ground. No device, in which the device is called __setup and 28 200530984, which is used to alternately supply the a # two-polarity sustaining pulses of the first polarity to the scan electrode. In the plasma display device, in the basin, the sustain pulse of the first polarity and the second polarity material are opposite polarities to each other. The μ pulse has a 17 such as = 4. The pulse has -positive polarity, and the second polarity:, the quasi-hold pulse has a negative polarity. The electric display device described in item 4), wherein two: two sets are placed in the first polarity -Sustaining a pulsed electric source between the scan electrodes. Electricity 19 = The plasma display device described in item 14 of the scope of the patent application, and the second one—the switching device is placed between a voltage source of the second polarity and the plurality of scanning electrodes. ", 2" application: The plasma display device described in item 14 of the scope of profit, wherein the electrodes are traced. It is placed between the ground voltage source and the plurality of sweeping patents. Item 4 The scan drive 罝-二 # and 辻 之 电 水 显 are not described, among which Sanqian chooses the-switching device and the 22. 22. ^ Straight to generate a 5 Haidi-polarity maintenance pulse. Shen. Gong According to the item 14 of the patent scope, the scan drive unit "Volume" 4 ... there is no description "among which the three switching devices select the second switching device and the first and second generating pulses of 4 second polarity. 29 200530984 The scanning month i area special action single-handed electric condensing display device described in item ^, of which five switching devices, in order to fight ... Explain Haidi four switching clothes and the 24. If you apply for production 〇 The polarity of the sustain pulse. The scan drive, the periphery: the plasma display device described in item 22, in which the five switching devices have chosen the fourth switching device and the twenty-fifth switching device as early as the parent #.-A kind of driving power will generate 2 second polarity sustain pulse . (· -Sub-picture field 2 The steps include: (· the dimension. = To; r: r; and the method of maintaining item 26 of 26, wherein the negative polarity sustaining pulse is supplied by a negative voltage source. • If the scope of the patent application is 25th, maintain the electrical mmurn to a ground voltage source that maintains a ground voltage. 30