KR100542225B1 - Plasma display panel and Method for deriving the same - Google Patents

Plasma display panel and Method for deriving the same Download PDF

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Publication number
KR100542225B1
KR100542225B1 KR20030075960A KR20030075960A KR100542225B1 KR 100542225 B1 KR100542225 B1 KR 100542225B1 KR 20030075960 A KR20030075960 A KR 20030075960A KR 20030075960 A KR20030075960 A KR 20030075960A KR 100542225 B1 KR100542225 B1 KR 100542225B1
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South Korea
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voltage
sustain
electrode
falling
period
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KR20030075960A
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Korean (ko)
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KR20050041054A (en
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이동영
이준영
이토카주히토
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삼성에스디아이 주식회사
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Abstract

The present invention provides a plasma display panel and a driving method thereof capable of effectively utilizing the priming effect.
The present invention provides a plasma display panel in which first and second electrode lines are alternately arranged side by side, and address electrodes are arranged to cross the lines, and a driving waveform including a reset period, an address period, and a sustain period is applied and driven. In the sustaining method, a) during the sustaining period, a) the rising period of rising from the first voltage to the second voltage, the sustaining period in which the second voltage is maintained, and the falling period of falling from the second voltage to the first voltage; B) applying a first sustain driving waveform, and then b) rising to the second electrode from the third voltage to the fourth voltage, sustaining period to maintain the fourth voltage, and falling to the third voltage from the fourth voltage. A second sustaining waveform having a falling section and having a section overlapped with the first sustaining waveform is applied.
Plasma Display Panel, Maintenance Period, Priming

Description

Plasma display panel and method for driving the same {Plasma display panel and Method for deriving the same}

1 is a partially exploded perspective view illustrating a structure of a general plasma display panel.

FIG. 2 is a diagram schematically illustrating an arrangement of electrodes of the plasma display panel of FIG. 1.

3 is a diagram illustrating driving waveforms of a subfield of a plasma display panel having three electrodes described above.

4 is a view showing in detail the sustain driving waveform applied in the sustain period.

5 is a diagram illustrating a sustain driving waveform applied to a plasma display panel according to a first embodiment of the present invention.

6 illustrates a sustain driving waveform applied to a plasma display panel according to a second exemplary embodiment of the present invention.

7 is a diagram schematically illustrating a configuration of a plasma display panel according to the present invention.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plasma display panel (PDP) and a driving method thereof, and more particularly, to a plasma display panel capable of increasing display brightness and a driving method thereof.

Recently, flat display devices such as a liquid crystal display (LCD), a field emission display (FED), and a plasma display panel have been actively developed. Among the flat panel display devices, the plasma display panel has advantages of higher luminance and luminous efficiency and wider viewing angle than other flat panel display devices. Accordingly, the plasma display panel is in the spotlight as a display device to replace the conventional cathode ray tube (CRT) in a large display device of 40 inches or more.

First, a structure of a general plasma display panel will be described with reference to FIG. 1.

1 is a partially exploded perspective view illustrating a structure of a general plasma display panel.

As shown in FIG. 1, the scan electrode 4 and the sustain electrode 5 covered with the dielectric layer 2 and the protective film 3 are arranged in parallel on the first glass substrate 1. A plurality of address electrodes 8 covered with the insulator layer 7 are provided on the second glass substrate 6. A partition 9 is formed on the insulator layer 7 between the address electrodes 8 in parallel with the address electrode 8. In addition, the phosphor 10 is formed on the surface of the insulator layer 7 and on both side surfaces of the partition wall 9. The first glass substrate 1 and the second glass substrate 6 have a discharge space 11 therebetween so that the scan electrode 4 and the address electrode 8 and the sustain electrode 5 and the address electrode 8 are orthogonal to each other. They are arranged to face each other. The discharge space at the intersection of the address electrode 8 and the pair of the scanning electrode 4 and the sustain electrode 5 forms a discharge cell 12.

FIG. 2 is a diagram schematically illustrating an arrangement of electrodes of the plasma display panel of FIG. 1.

As shown in FIG. 2, the electrodes of the plasma display panel have a matrix configuration of m × n. Specifically, the address electrodes A1 to Am are arranged in the column direction and the scan electrodes of n rows in the row direction. (Y1 to Yn) (hereinafter referred to as Y electrode) and sustain electrodes X1 to Xn (hereinafter referred to as X electrode) are alternately arranged. That is, the X electrodes X1 to Xn and the Y electrodes Y1 to Yn are formed in a predetermined pattern on the back of the first glass substrate 1 to be orthogonal to the address electrodes A1 to Am. Discharge cells 12 are formed at each crossing point. The plasma forming gas is sealed in the discharge space of the discharge cell 12 and discharged by a pulse applied to the three electrodes to display an image.

As a method of driving the plasma display panel 1 having the above structure, an address and display period separated (ADS) driving method in which a subfield is driven by being divided into a reset period, an address period, and a sustain period is disclosed in the United States. It is disclosed in patent no.

3 is a view showing a driving waveform of a subfield of the plasma display panel used in the address-display separation driving method.

As shown in Fig. 3, each subfield is composed of a reset period, an address period, and a sustain period. The reset period serves to erase the wall charge state of the previous sustain discharge and to set up wall charge in order to stably perform the next address discharge.

Here, the wall charges refer to electric charges formed on the walls of the discharge cells (eg, dielectric layers) close to each electrode and accumulated in the electrodes. Such wall charges are not actually in contact with the electrodes themselves, but here wall charges are described as "formed", "accumulated" or "stacked" on the electrodes. In addition, the wall voltage refers to a potential difference formed on the wall of the discharge cell by the wall charge.

The address period is a period in which wall charges are accumulated on cells (addressed cells) that are turned on by selecting cells that are turned on and cells that are not turned on in the panel. The sustain period is a period in which a discharge for actually displaying an image on the addressed cells is performed.

4 is a view showing in detail the sustain driving waveform applied in the sustain period.

In general, as shown in FIG. 4, the sustain period Ts is constant, and thus, a time Tsx at which the sustain voltage Vs is applied to the X electrode and a time Tsy at which the sustain voltage Vs is applied to the Y electrode. Is also constant.

Specifically, during the first sustain period Ts1, the sustain voltage Vs is applied to the Y electrode for a time Tsy, and then the sustain voltage Vs is applied to the X electrode for a time Tsx. Since the time Tsx proceeds after the time Tsy is finished and the sustain voltage Vs is applied to each electrode, the application of the sustain voltage Vs during the time Tsy at which the voltage is applied for the first time in the sustain period. Priming that occurs is destroyed. That is, during the time Tsx, there is a problem in that priming generated at the time Tsy cannot be effectively utilized.

SUMMARY OF THE INVENTION The present invention has been made in an effort to provide a plasma display panel and a method of driving the same, which are driven using a sustain driving waveform which can effectively utilize a priming effect caused by a sustain voltage initially applied in a sustain period. will be.

The driving method of the plasma display panel according to the first aspect of the present invention for solving the above technical problem,

A method of driving a plasma display panel in which first and second electrode lines are alternately arranged side by side, address electrodes are arranged to cross the lines, and a driving waveform including a reset period, an address period, and a sustain period is applied and driven. ,

In the above maintenance period,

a) applying a first sustain driving waveform to the first electrode having a rising section rising from the first voltage to the second voltage, a sustain section holding the second voltage, and a falling section falling from the second voltage to the first voltage; Doing;

b) the second electrode has a rising section rising from a third voltage to a fourth voltage, a sustain section maintaining a fourth voltage, and a falling section falling from a fourth voltage to a third voltage; Applying a second sustain driving waveform having a section to be folded; And

c) the first sustain electrode has a rising section that rises from a fifth voltage to a sixth voltage, a sustaining section for maintaining a sixth voltage, and a falling section for falling from a sixth voltage to a fifth voltage; Applying a non-overlapping third sustain driving waveform;

It includes.

The first voltage, the third voltage, and the fifth voltage may be ground potentials, and the second voltage may be greater than a fourth voltage.

The fourth voltage may be the same voltage.

The first electrode may be a scan electrode and the second electrode may be a sustain electrode.

The first sustain driving waveform may be first applied to the sustain period after the address period ends.

A driving method of a plasma display panel according to a second aspect of the present invention,

A method of driving a plasma display panel in which first and second electrode lines are alternately arranged side by side, address electrodes are arranged to cross the lines, and a driving waveform including a reset period, an address period, and a sustain period is applied and driven. ,

In the above maintenance period,

a) a rising section rising from the first voltage to the second voltage, a first sustain section maintaining a second voltage, a first falling section falling from a second voltage to a third voltage, and a third voltage Applying a first sustain driving waveform having a second sustained period to be maintained and a second falling section to fall from the third voltage to the first voltage;

b) the second electrode has a rising section that rises from a fourth voltage to a fifth voltage, a sustain section that maintains a fifth voltage, and a falling section that falls from a fifth voltage to a fourth voltage; Applying a second sustain driving waveform having an overlapping portion; And

c) the first sustain electrode has a rising section rising from the sixth voltage to the seventh voltage, a sustain section maintaining the seventh voltage, and a falling section falling from the seventh voltage to the sixth voltage; Applying a non-overlapping third sustain driving waveform;

It includes.

The first voltage, the fourth voltage, and the sixth voltage may be ground potentials, and the third voltage, the fourth voltage, and the seventh voltage may be the same voltage.

The first duration of the first sustain driving waveform may be longer than the second duration.

The first sustain driving waveform may be first applied to the sustain period after the address period ends.

The first electrode may be a scan electrode and the second electrode may be a sustain electrode.

Plasma display panel according to a third aspect of the present invention,

12. A plasma display panel comprising a driving unit in which scan and sustain electrode lines are alternately arranged side by side, and address electrodes are arranged intersecting with the lines, and a driving unit for applying a driving signal to the scan and sustain electrodes.

The drive unit, after the address period is finished,

A first sustain driving waveform is applied to the scan electrode having a rising section rising from the first voltage to the second voltage, a sustain section holding the second voltage, and a falling section falling from the second voltage to the first voltage.

The sustain electrode has a rising section rising from the third voltage to the fourth voltage, a sustain section holding the fourth voltage, and a falling section falling from the fourth voltage to the third voltage, and overlapping the first sustain driving waveform. 2 Apply the sustain drive waveform.

The first voltage and the third voltage may be ground voltages, and the second voltage may be greater than the fourth voltage.

The falling section falling from the second voltage to the first voltage includes a first falling section falling from the second voltage to the fifth voltage, a duration maintained for a predetermined time at a fifth voltage, and the first voltage at the fifth voltage. It may have a second falling section to descend to.

Here, the fifth voltage may be the same voltage as the third voltage.

Hereinafter, with reference to the accompanying drawings will be described in detail embodiments of the present invention.

5 is a view showing a sustain driving waveform according to the first embodiment of the present invention.

As shown in Fig. 5, the sustain period has a plurality of sustain periods (Ts1, Ts2 ...). Here, the sustain period means a time at which the sustain pulse is applied to the Y electrode and the X electrode once.

In the first sustain period Ts1, the first sustain pulse is applied to the Y electrode at time Tsy1, and the second sustain pulse is applied to the X electrode at time Tsx1. The time Tsx1 advances before the end of the time Tsy1 so that the falling portion of the first sustain pulse applied to the Y electrode and the rising section of the second sustain pulse applied to the X electrode are overlapped. In addition, the voltage of the first sustain pulse applied during the time Tsy1 is greater than the voltage of the second sustain pulse, that is, the sustain pulse applied after the time Tsy2. In this way, priming occurs by applying an initial sustain pulse having a high voltage.

Next, during the first sustain period Ts2, a third sustain pulse having the same voltage as the second sustain pulse is applied to the Y electrode at time Tsy2, and a fourth sustain pulse is applied to the X electrode at time Tsx2. . Here, the time Tsy2 and the time Tsx2 do not overlap, and the magnitudes of the sustain pulses applied to the Y electrode and the X electrode are also the same.

As such, the voltage of the sustain pulse first applied in the sustain period is higher than the voltage of the sustain pulse applied thereafter, and is maintained at the Y electrode and the X electrode such that the falling portion of the first sustain pulse and the rising portion of the second sustain pulse overlap each other. A pulse is applied to generate strong discharge. That is, since the next sustain pulse is applied before the priming generated by the first sustain pulse is extinguished, the priming can be effectively utilized, and the sustain discharge after the first strong discharge can also easily generate strong discharge.

6 is a view showing a sustain driving waveform according to a second embodiment of the present invention.

As shown in Fig. 6, during the first sustain period Ts1, the falling portion of the sustain first pulse applied to the Y electrode and the rising section of the second sustain pulse applied to the X electrode are folded. That is, time Tsx1 advances before time Tsy1 ends. Also, the voltage of the sustain pulse applied during the time Tsy1 is greater than the voltage of the sustain pulse applied after the time Tsy2. This is to cause the priming effect to occur by the initial sustain pulse.

The second embodiment differs from the first embodiment in that the sustain pulse applied for the time Tsy1 falls from the voltage Vfs to the voltage Vs, maintains the voltage Vs for a predetermined time, and then again ground potential. (G) is descending. That is, a step is formed in the falling section of the first sustain pulse.

During the first sustain period Ts2, the time Tsx2 proceeds after the time Tsy2 ends, and a sustain pulse of the same voltage is applied to the Y electrode and the X electrode.

As such, the voltage of the sustain pulse first applied in the sustain period is higher than the voltage of the sustain pulse applied thereafter, and is maintained at the Y electrode and the X electrode such that the falling portion of the first sustain pulse and the rising portion of the second sustain pulse overlap each other. A pulse is applied to generate strong discharge. That is, since the next sustain pulse is applied before the priming generated by the first sustain pulse is extinguished, the priming can be effectively utilized, and the sustain discharge after the first strong discharge can also easily generate strong discharge.

In addition, since the step is formed in the falling section of the first sustain pulse, it is possible to effectively prevent the electromagnetic interference effect caused by a large voltage difference when continuously falling without the step.

7 is a diagram schematically illustrating a configuration of a plasma display panel according to the present invention.

As shown in FIG. 7, the plasma display panel according to the present invention includes a plasma panel 100, a controller 200, an address driver 300, an X electrode driver 400, and a Y electrode driver 500.

The plasma panel 100 includes a plurality of address electrodes A1 to Am arranged in the column direction, a plurality of scan electrodes X1 to Xn arranged in the row direction, and sustain electrodes Y1 to Yn. .

The controller 200 receives the image signal from the outside and controls the X electrode driving driving circuit signal, the Y electrode driving driving signal, and the address electrode driving signal to be output.

The X electrode driver 400 receives the X electrode driving control signal from the controller 200 and applies a driving voltage to the X electrode.

 The Y electrode driver 500 receives a Y electrode driving control signal from the controller 200 and applies a driving voltage to the Y electrode.

Hereinafter, operations of the controller 200, the address driver 300, the X electrode driver 400, and the Y electrode driver 500 will be described in more detail.

First, the controller 200 controls the Y-electrode driver 500 so that the falling portion of the first sustain pulse applied to the Y electrode and the rising section of the second sustain pulse applied to the X electrode are folded during the first sustain period Ts1. The X electrode driver 400 is controlled. That is, during the time Tsy1, the Y electrode driver 500 applies the initial sustain pulse to the Y electrode, and the X electrode driver 400 applies the sustain pulse for the time Tsx1, at which time Tsy1 is the time. A predetermined portion overlaps with Tsx1. In addition, the controller 200 controls the Y electrode driver 500 so that the voltage of the sustain pulse applied for the time Tsy1 is greater than the voltage of the sustain pulse applied after the time Tsy2.

During the first sustain period Ts2, the control unit 200 proceeds with the time Tsx2 after the end of the time Tsy2. During the time Tsy2 and the time Tsx2, the sustain pulses having the same voltage are Y electrodes, respectively. And controlling the Y electrode driver 500 and the X electrode driver 400 to be applied to the X electrode.

Alternatively, the control unit 200, the sustain pulse applied to the Y electrode for a time (Tsy1) is lowered from the voltage (Vfs) to the voltage (Vs), maintains the voltage (Vs) for a predetermined time and then again the ground potential ( The Y electrode driver 500 is controlled to descend to G). That is, a step is formed in the falling section of the first sustain pulse applied to the Y electrode.

During the first sustain period Ts2, the time Tsx2 proceeds after the time Tsy2 ends, and a sustain pulse of the same voltage is applied to the Y electrode and the X electrode.

As such, the voltage of the sustain pulse first applied in the sustain period is higher than the voltage of the sustain pulse applied thereafter, and is maintained at the Y electrode and the X electrode such that the falling portion of the first sustain pulse and the rising portion of the second sustain pulse overlap each other. A pulse is applied to generate strong discharge.

That is, since the next sustain pulse is applied before the priming generated by the first sustain pulse is extinguished, the priming can be effectively used. Thus, even after the second pulse following the first pulse during the sustain period, a low voltage sustain pulse can be applied. , Maintenance strong discharge is easily generated.

Although the present invention has been described above based on the preferred embodiments, the embodiments are intended to illustrate and not limit the invention. It will be apparent to those skilled in the art that various changes, modifications, and the like can be made to the embodiments without departing from the spirit of the invention. Therefore, the protection scope of the present invention will be limited only by the appended claims, and should be construed as including all changes or modifications.

According to the present invention, the first sustaining period is applied by applying a sustaining pulse to the Y electrode and the X electrode so that the lower portion of the first sustaining pulse applied to the Y electrode and the rising portion of the second sustaining pulse applied to the X electrode overlap each other. The priming effect generated by the pulse can be effectively utilized for the second sustain discharge. Therefore, strong discharge can be generated even if a low voltage sustain voltage is applied during the sustain period.

Claims (17)

  1. In the driving method of the plasma display panel in which the first and second electrode lines are arranged side by side alternately, the address electrodes are arranged to cross the lines, and a driving waveform including a reset period, an address period and a sustain period is applied and driven. In
    In the above maintenance period,
    a) applying a first sustain driving waveform to the first electrode having a rising section rising from the first voltage to the second voltage, a sustain section holding the second voltage, and a falling section falling from the second voltage to the first voltage; Doing;
    b) the second electrode has a rising section rising from a third voltage to a fourth voltage, a sustain section maintaining a fourth voltage, and a falling section falling from a fourth voltage to a third voltage; Applying a second sustain driving waveform having a section to be folded; And
    c) the first sustain electrode has a rising section that rises from a fifth voltage to a sixth voltage, a sustaining section for maintaining a sixth voltage, and a falling section for falling from a sixth voltage to a fifth voltage; Applying a non-overlapping third sustain driving waveform;
    Method of driving a plasma display panel comprising a.
  2. The method of claim 1, wherein the first voltage, the third voltage, and the fifth voltage are ground potentials.
  3. The method of claim 1, wherein the second voltage is greater than a fourth voltage.
  4. The method of claim 1, wherein the fourth voltage is the same voltage.
  5. The method of driving a plasma display panel according to any one of claims 1 to 5, wherein the first electrode is a scan electrode and the second electrode is a sustain electrode.
  6. The method of driving a plasma display panel according to any one of claims 1 to 5, wherein the first sustain driving waveform is first applied to the sustain period after the address period is sorted.
  7. In the driving method of the plasma display panel in which the first and second electrode lines are arranged side by side alternately, the address electrodes are arranged to cross the lines, and a driving waveform including a reset period, an address period and a sustain period is applied and driven. In
    In the above maintenance period,
    a) a rising section rising from the first voltage to the second voltage, a first sustain section maintaining a second voltage, a first falling section falling from a second voltage to a third voltage, and a third voltage Applying a first sustain driving waveform having a second sustained period to be maintained and a second falling section to fall from the third voltage to the first voltage;
    b) the second electrode has a rising section that rises from a fourth voltage to a fifth voltage, a sustain section that maintains a fifth voltage, and a falling section that falls from a fifth voltage to a fourth voltage; Applying a second sustain driving waveform having an overlapping portion; And
    c) the first sustain electrode has a rising section rising from the sixth voltage to the seventh voltage, a sustain section maintaining the seventh voltage, and a falling section falling from the seventh voltage to the sixth voltage; Applying a non-overlapping third sustain driving waveform;
    Method of driving a plasma display panel comprising a.
  8. The method of claim 7, wherein the first voltage, the fourth voltage, and the sixth voltage are ground potentials.
  9. The method of claim 7, wherein the third voltage, the fourth voltage, and the seventh voltage are the same voltage.
  10. The method of claim 7, wherein the first sustain period of the first sustain driving waveform is longer than a second duration.
  11. The method of driving a plasma display panel according to any one of claims 7 to 10, wherein the first sustain driving waveform is first applied to the sustain period after the address period is sorted.
  12. The method of driving a plasma display panel according to any one of claims 7 to 10, wherein the first electrode is a scan electrode and the second electrode is a sustain electrode.
  13. A plasma display panel comprising a driving unit in which scan and sustain electrode lines are alternately arranged side by side, and address electrodes are arranged to cross the lines, and a driving unit is configured to apply a driving signal to the scan and sustain electrode.
    The drive unit, after the address period is finished,
    A first sustain driving waveform is applied to the scan electrode having a rising section rising from the first voltage to the second voltage, a sustain section holding the second voltage, and a falling section falling from the second voltage to the first voltage.
    The sustain electrode has a rising section rising from the third voltage to the fourth voltage, a sustain section holding the fourth voltage, and a falling section falling from the fourth voltage to the third voltage, and overlapping the first sustain driving waveform. 2 Plasma display panel applying sustain driving waveform.
  14. The plasma display panel of claim 13, wherein the first voltage and the third voltage are ground voltages.
  15. The plasma display panel of claim 13, wherein the second voltage is greater than the fourth voltage.
  16. The method of claim 13,
    The falling section falling from the second voltage to the first voltage is
    A plasma display panel having a first falling section falling from a second voltage to a fifth voltage, a duration maintained for a predetermined time at a fifth voltage, and a second falling section falling to the first voltage at a fifth voltage.
  17. The plasma display panel of claim 16, wherein the fifth voltage is the same voltage as the third voltage.
KR20030075960A 2003-10-29 2003-10-29 Plasma display panel and Method for deriving the same KR100542225B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100573167B1 (en) 2004-11-12 2006-04-24 삼성에스디아이 주식회사 Driving method of plasma display panel

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100740128B1 (en) 2005-11-28 2007-07-16 삼성에스디아이 주식회사 Plasma display and driving method thereof
KR100820637B1 (en) * 2006-06-05 2008-04-10 엘지전자 주식회사 Plasma Display Apparatus
JP2008051845A (en) * 2006-08-22 2008-03-06 Fujitsu Hitachi Plasma Display Ltd Plasma display device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100573167B1 (en) 2004-11-12 2006-04-24 삼성에스디아이 주식회사 Driving method of plasma display panel

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