KR100502359B1 - Method for driving discharge display panel by address-display mixing and apparatus thereof - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and apparatus for implementing gradation in a display device displaying an image by sequentially performing an address period and a sustain period. In the method of driving a discharge display panel according to the present invention, the display electrode line pairs are driven by grouping the display electrode line pairs into two or more display electrode line groups such that at least one display electrode line pair is included in one display electrode line group. The line groups comprise a first display electrode line group and a second display electrode line group, wherein at least one of the sub-fields is an addressing time for selecting cells to display for the first display electrode line group, the first A display-hold time for displaying selected cells by applying a sustain pulse to the electrode lines of the display electrode line group, an addressing time for the second display electrode line group, and a display-hold time for the second display electrode line groups Sequentially including at least one of the sub-fields including a sub-field having a minimum gray scale weight, Having a weight sub-field, the sustain pulse is in the ramp pulse having a gradient, at least one or more features.

Description

Method for driving discharge display panel by address-display mixing and apparatus therefor

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and apparatus for driving a discharge display panel, and more particularly, to a method and apparatus for implementing grayscale in a display device displaying an image by sequentially performing an address period and a sustain period.

Particularly, the present invention relates to a driving method and a driving device of a screen display device for displaying an image on a panel by discharge, hereinafter, a driving method and driving device for implementing gradation in a plasma display display device are exemplified below. Describe it.

1 is a partial perspective view showing the structure of a conventional three-electrode surface discharge plasma display panel.

Referring to the drawing, the scan electrode 106 and the sustain (common) electrode 108 covered with the dielectric layer 102 and the passivation layer 104 are formed in parallel on the first glass substrate 100 in pairs. The plurality of address electrodes 114 covered with the insulator layer 112 are formed on the second glass substrate 110. The address electrode 114 is arranged to be orthogonal to the scan electrode 106 and the common electrode 108. The partition wall 116 is formed on the insulator layer 112 between the address electrodes 114 in parallel with the address electrode 114. The phosphor 118 is formed on the surface of the insulator layer 112 and on both side surfaces of the partition wall 116. The first glass substrate 100 and the second glass substrate 110 are discharge spaces 120 formed by a plurality of scan electrodes 106, a common electrode 108, an address electrode 114, and a partition wall 116. Are arranged to face each other with A discharge cell 122 is formed at each intersection of the address electrode 114 and the pair of sustain electrode lines including the scan electrode 106 and the common electrode 108.

FIG. 2 is an electrode array diagram schematically illustrating an electrode array of the plasma display panel of FIG. 1.

Referring to the drawings, address electrodes A ₁ to _Am are arranged in a row direction, and n scan electrodes Y ₁ to Y _n and a common electrode X ₁ are arranged in a column direction. ~ X _n ) is arranged. In FIG. 2, one discharge cell indicated at the intersection of the address electrode A ₂ , the scan electrode Y ₂ , and the common electrode X ₂ corresponds to the discharge cell 122 shown in FIG. 1. The discharge cells to be displayed are selected by the address electrode and the scan electrode, and sustained and discharged by the scan electrode and the common electrode.

An example of an electrode driving method of such a plasma display panel is disclosed in US Pat. No. 5,541,618.

FIG. 3 is a diagram illustrating driving amounts of light emitted from a driving waveform and a subfield of the plasma display panel of FIG. 1.

Referring to the drawings, the conventional method of driving the plasma display panel is selected from the minimum unit light, that is, the light of the subfield 1 (weight 1), the light of the reset period (which is almost ignored as part of the front of the reset period), and the address period. It is represented by the light generated in the discharge cell and the light generated in one sustain discharge in the sustain period. In other words, in the period of the subfield 1, an address discharge (address light) is performed in the address period to form positive ions in the scan electrode, and thereafter, the scan electrode Y is set higher than the sustain electrode X in the sustain period to scan. One sustain discharge is performed by applying the sustain discharge voltage Vs between the electrode Y and the sustain electrode X. FIG.

At this time, in the conventional driving method, the minimum unit light is mainly represented by the amount of light emitted by the discharge occurring between the scan electrode Y and the sustain electrode X in the sustain period. Typically, sustain pulses represented by square waves are alternately applied to each of the scan electrode Y and the sustain electrode X for sustain discharge.

On the other hand, since a constant voltage or more is generally required as the sustain discharge voltage Vs for stable sustain discharge, the light emission amount of the minimum unit light has a larger value than the constant magnitude. Therefore, the conventional driving method has a limit to reduce the light emission amount of the minimum unit light, there is a limit to implement a luminance lower than the luminance displayed by the conventional minimum unit light.

In addition, in the current trend of using high Xe partial pressure discharge gas to increase luminous efficiency, the size of unit light generated by one sustain discharge increases, so in this situation, the minimum required to increase low gradation power is required. There is a problem that it becomes more difficult to reduce the size of the unit light.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to provide a method and a device for driving a discharge display panel by address-display mixing that can reduce the amount of light emitted from the minimum unit light to improve low gray scale expression. It is done.

The driving method of the discharge display panel according to the present invention for achieving the above object,

A frame is formed by processing an image signal input from an external device for a discharge display panel in which unit cells are formed in regions where address electrode lines intersect with display electrode line pairs in which X electrode lines and Y electrode lines are alternately arranged side by side. Performing time division gray scale display by dividing each frame into a plurality of sub-fields having respective gray scale weights, such that at least one pair of display electrode lines is included in one display electrode line group. A display electrode line pair is driven by grouping two or more display electrode line groups.

The display electrode line groups may include a first display electrode line group and a second display electrode line group.

At least one of the sub-fields,

An addressing time for selecting cells to be displayed with respect to the first display electrode line group,

A display-hold time for displaying the selected cells by applying a sustain pulse to the electrode lines of the first display electrode line group;

An addressing time for the second display electrode line group, and

Sequentially including display-hold time for the second display electrode line groups;

Wherein at least one of the sub-fields comprises a sub-field with a minimum gray scale weight, and wherein the sustain pulse in the sub-field with the minimum gray weight is a ramp pulse having at least one slope.

It is preferable to selectively perform the display-holding time for the cells of the other display electrode line groups that have already performed the addressing time while the display-holding time is performed for the cells of the second display electrode line group.

A drive device for a discharge display panel according to another aspect of the present invention drives the discharge display panel by the method for driving the discharge display panel.

According to the present invention, it is possible to improve the low gray scale expressive power by reducing the light emission amount of the minimum unit light displayed, and to stabilize the sustain discharge by shortening the waiting time until all other pairs of sustain electrode lines are addressed after the discharge cells are addressed. In particular, the sustain discharge at the minimum unit light can be stabilized.

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

4 is a timing diagram illustrating a method of driving a discharge display panel by address-display mixing according to a preferred embodiment of the present invention.

Referring to the drawings, in the present embodiment, the unit frame is made up of five sub-fields from SF1 to SF5, and the present invention can be achieved by unit frames having various sub-field configurations. Reference numerals SF1 to SF5 denote sub-fields respectively allocated in the unit frame, Y ₁ to Y _{n denote} Y electrode lines that are the reference of driving objects, R1 to R5 denote reset times, and M1 to M5 address each. The mixed drive times in which the display-hold time exists between the times, CS1 to CS5 indicate common display-hold times, and AS1 to AS5 indicate correction display-hold times, respectively. In the embodiment of FIG. 4, only a single display electrode line pair is included in each of the display electrode line groups. In other words, each of the display electrode line groups is the same as each of the XY electrode line pairs X ₁ Y ₁ to X _n Y _n .

1 and 4, the first to fifth sub-fields are set in a unit frame such that the gray scale weight of the sub-field is gradually increased. The gray scale weight of each sub-field is represented by common display-hold times CS2 to CS5 for all display electrode line groups.

The first sub-field SF1 having the lowest gradation weight includes the reset time R1, the mixed drive time M1, and the correction display-hold time AS1, and includes a separate common display-hold time. I never do that. Each of the second to fifth sub-fields SF2 to SF5 includes a reset time R2 to R5, a mixed driving time M2 to M5, a correction display-hold time AS2 to AS5, and a common display-hold time. (CS2 to CS5).

At the reset times R1 to R5, the charge states of all display cells become uniform. At the addressing times included in the mixing drive times M1 to M5, a predetermined wall potential is generated in the selected display cells. In the display-holding time included in the mixed driving time M1 to M5, display cells are selected from the addressing time and the predetermined wall potential is formed by applying a predetermined alternating voltage to the XY electrode line pairs where addressing is completed. Causes

In the mixing drive times M1 to M5, addressing and display-holding operations are performed alternately. For example, addressing is performed on the display cells of the first Y electrode line Y ₁ at the first unit time, and the first display electrode line pair as the first display electrode line group at the second unit time, that is, the XY electrode line. An alternating voltage is applied to the pair X ₁ Y ₁ , addressing is performed on the display cells of the second Y electrode line Y _{2 in} a third unit time, and the first and second display electrode lines in a fourth unit time. An alternating voltage is applied to the first and second XY electrode line pairs X ₁ Y ₁ , X ₂ Y ₂ as groups, and addressing is performed on the display cells of the third Y electrode line Y ₃ at a fifth unit time. AC voltage is applied to the first to third XY electrode line pairs X ₁ Y ₁ to X ₃ Y ₃ as the first to third display electrode line groups at the sixth unit time. Generalizing this process, the addressing operation is performed on each of the Y electrode lines Y ₁ to Y _{n for} every odd unit time of each of the mixing driving times M1 to M5, and the Y electrode on which the addressing operation is completed. The display-maintenance operation is performed for every even unit time for a line or lines.

Accordingly, since the waiting time for waiting for all other XY electrode line pairs to be addressed after the discharge cells are addressed is short, the accuracy of the display-maintenance discharge can be increased.

In the correction display-hold time AS1 to AS5, different for each of the XY electrode line pairs X ₂ Y ₂ to X _n Y _n that do not meet the required display-hold time in the mixing drive time M1 to M5. By applying an alternating voltage during the set time, the necessary display-hold time is filled for all XY electrode line pairs X ₁ Y1 to X _n Y _n .

At the common display-hold time CS2 to CS5 of each of the second to fifth sub-fields SF2 to SF5 set in proportion to the gray scale weight of each sub-field, all the XY electrode line pairs X ₂ Y ₂ to AC voltage is applied to X _n Y _n ).

5 is a timing diagram illustrating a method of driving a discharge display panel by address-display mixing according to another embodiment of the present invention.

Referring to the drawings, reference numerals Y _G1 to Y _G8 denote display electrode line groups to which the Y electrode lines Y ₁ to Y _n belong. For example, when the Y electrode lines Y ₁ to Y _n are 480, the first to 60th Y electrode lines Y ₁ to Y _{60 are} formed on the first display electrode line group Y _G1 . 61 to 120 Y electrode lines (Y ₆₁ to Y ₁₂₀ ) are in the second display electrode line group (Y _G2 ), and 121 to 180 Y electrode lines (Y ₁₂₁ to Y ₁₈₀ ) are in the third display electrode line. In the group Y _G3 , the 181 th to 240 th Y electrode lines Y ₁₈₁ to Y ₂₄₀ correspond to the fourth display electrode line group Y _G4 , and the 241 th to 300 th Y electrode lines Y241 to Y300. In the fifth display electrode line group Y _G5 , the 301-360 th Y electrode lines Y _301- Y ₃₆₀ are in the sixth display electrode line group Y _G6 , and the 361 th-420 Y electrode line Y ₃₆₁ to Y ₄₂₀ correspond to the seventh display electrode line group Y _G7 , and 421 to 480 Y electrode lines Y ₄₂₁ to Y ₄₈₀ correspond to the eighth display electrode line group Y _G8 . Each belong.

1 and 5, each of the first and second sub-fields SF1 and SF2 has a reset time R1 and R2, a mixed driving time M1 and M2, and a correction display-hold time AS1, AS2). On the other hand, each of the third to fifth sub-fields SF3 to SF5 has a reset time R3 to R5, a mixed driving time M3 to M5, a correction display-hold time AS3 to AS5, and a common display. Holding time (CS3 to CS5). As described with reference to FIG. 4, each of the first and second sub-fields SF1 and SF2 has lower gray scale weights compared to each of the other sub-fields SF3 to SF5, thus maintaining a common display-maintenance. No time is added. The difference from the driving method of FIG. 4 is that each of the display electrode line groups includes only one display electrode line pair in the driving method of FIG. 4, whereas each of the display electrode line groups is a plurality of display electrode lines in the driving method of FIG. 5. It contains only pairs.

FIG. 6 is a timing diagram illustrating the fourth sub-field in more detail in the method of driving the discharge display panel by the address-display mixing of FIG. 5.

Referring to the drawing, in the case of the fourth sub-field SF4 of FIG. 7, the required display-hold time for all the display electrode line groups is corrected by 7 unit times in the common display-hold time CS4. This is the sum of the display-hold time AS4. At this time, the order of the correction display-holding time AS4 and the common display-holding time CS4 may be changed.

At the reset time R4, the charge states of all the display cells become uniform.

In the mixing drive time M4, the addressing and display-holding operation is performed alternately. For example, the addressing step A _G1 for the first display electrode line group Y _G1 is performed at the first addressing time T _A1 . In the first display-hold time T _S1 , the display-hold step S ₁₁ for the first display electrode line group Y _G1 for which addressing is completed is performed. At the second addressing time T _A2 , the addressing step A _G2 for the second display electrode line group Y _G2 is performed. In the second display-hold time T _S2 , display-hold steps S ₁₂ and S ₂₁ for the addressing-completed first and second display electrode line groups Y _G1 and Y _G2 are simultaneously performed. At the third addressing time T _A3 , the addressing step A _G3 for the third display electrode line group Y _G3 is performed. In the third display-hold time T _S3 , the display-hold steps S ₁₃ , S ₂₂ , and S _{31 of} the first to third display electrode line groups Y _G1 to Y _G3 that have been addressed are simultaneously performed. Proceed. Generalizing this process, in the mixed driving time M4, an addressing operation is performed on each of the display electrode line groups Y _G1 to Y _{G8 at} every odd unit time, and the display electrode line is completed. The display-maintenance operation is performed for every even unit time for the group or groups.

Accordingly, since the waiting time for waiting for all the other display electrode line groups to be addressed after each display electrode line group is addressed is short, the accuracy of the display-maintenance discharge can be increased.

In the correction display-hold time AS4, an alternating voltage is applied for a time set differently for each of the display electrode line groups Y _G2 to Y _G8 that do not satisfy the required display-hold time in the mixing drive time M4. Thus, the required display-hold time is filled for all the display electrode line groups Y _G1 to Y _G8 .

More specifically, the display-holding steps for the second to eighth display electrode line groups Y _G2 to Y _G8 are simultaneously performed in the first unit time T _AS1 of the correction display-hold time AS4. . In the second unit time T _AS2 , display-maintenance steps for the third to eighth display electrode line groups Y _G3 to Y _G8 are simultaneously performed. In the third unit time, the display-holding steps for the fourth to eighth display electrode line groups Y _G4 to Y _G8 are simultaneously performed. In the fourth unit time, the display-holding steps for the fifth to eighth display electrode line groups Y _G5 to Y _G8 are simultaneously performed. In the fifth unit time, the display-holding steps for the sixth to eighth display electrode line groups Y _G6 to Y _G8 are simultaneously performed. In the sixth unit time, the display-holding steps for the seventh and eighth display electrode line groups Y _G7 and Y _G8 are simultaneously performed. Finally, in the seventh unit time, the display-maintenance step for the eighth display electrode line group Y _G8 is performed.

In the common display-hold time CS4 set to be proportional to the gray scale weight of the fourth sub-field SF4, the display-hold operation is performed on all the display electrode line groups Y _G1 to Y _G8 . That is, an alternating voltage is applied to all XY electrode line pairs X ₁ Y ₁ to X _n Y _n .

FIG. 7 is a timing diagram illustrating an example of potential waveforms of driving signals applied to respective electrode lines in the fourth sub-field of FIG. 5 when the display electrode line pairs are grouped only into the first and second display electrode line groups. FIG. .

Referring to the drawings, reference numeral S _{A1 ..Am} denotes display data signals applied from the address driver 300 (FIG. 10) to the address electrode lines (A ₁ to A _{m in} FIG. 2). S _X indicates a driving signal applied from the X driver (500 in FIG. 10) to the X electrode lines (X ₁ ,..., X _{n in} FIG. 1) of the first display electrode line group. In this example, all display electrode line groups are driven in common. However, the X electrode lines may be grouped like the Y electrode lines, and the driving signal may be applied to each group.

In addition, S _YG1 is a drive signal applied to the first display line of Y electrodes of the electrode line groups (Y in FIG. _{2 1, ..., Y n /} 2) from the Y driver (400 in FIG. 10), S _YG2 Indicates a driving signal applied from the Y driver 400 to the Y electrode lines (Y _{(n / 2) +1} ,..., Y _{n in} FIG. 2) of the second display electrode line group. R denotes a reset time, M denotes a mixed drive time, CS denotes a common display-hold time, and an AS denotes a correction display-hold time.

The driving signal applied to each of the electrode lines is normally applied to each of the reset time, the address time, and the display-hold time, except that the order and the combination of the driving time are different according to the present invention as shown in FIG. It can be made by the drive signal of.

FIG. 8 is a timing diagram showing in detail a sub-field having a minimum weight in a method of driving a discharge display panel by address-display mixing according to another embodiment of the present invention, and FIG. And a timing diagram showing an example of potential waveforms of driving signals applied to respective electrode lines in the sub-field having the minimum weight of FIG. 8 when grouped only into the second display electrode line groups.

Referring to the drawings, the method of driving the discharge display panel according to the present embodiment uses the same reference numerals as in the embodiment shown in Figs.

In the method of driving a discharge display panel according to the present embodiment, the display electrode line pairs are driven by grouping the display electrode line pairs into two or more display electrode line groups such that at least one display electrode line pair is included in one display electrode line group. A display mixing driving method, wherein at least one of the sub-fields sequentially performs an addressing time for selecting cells to display and a display-hold time for displaying the selected cells by applying a sustain pulse to display electrode line pairs. do. In this case, after the addressing time and the display-holding time are sequentially performed on the cells of one display electrode line group, the addressing time is performed on the cells of the other display electrode line groups, and the cells of the other display electrode line groups are performed. The display-holding time is selectively performed for the cells of the display electrode line groups that have already performed the addressing time while the display-holding time is performed.

Wherein at least one of the sub-fields includes a sub-field with a minimum gray scale weight, and wherein the sustain pulse in the sub-field with the minimum gray weight is a ramp pulse having at least one slope.

Particularly, it is preferable that one sustain pulse is applied to each pair of display electrode lines at the display-hold time S in the sub-field SF1 having the minimum gray scale weight, as shown in FIG. 9. It is preferable that it is a ramp pulse having a predetermined slope.

In this embodiment, since the address-display mixed driving method is used, sustain discharge is stabilized, and stable sustain discharge can be obtained even if the widths of the scan pulse and the address pulse applied in the address period are narrower. Therefore, the ramp slope of the sustain pulse can be determined according to the width of the sustain pulse and the sustain voltage (V _S ) applied to the Y electrode, and stably sustain discharge even if a ramp pulse is used instead of the square wave pulse used in the conventional driving method. May cause

In the case of the square-wave sustain pulse by the conventional driving method, the unit light by one sustain pulse has a luminance of about 2 candelas (cd), but it is applied to one lamp pulse by the address-display mixed drive according to the present invention. In the case of the sustain drive, the result of the experiment showed that the luminance was about 0.63 candela (cd).

Further, at the display-hold time S in the sub-field SF1 having the minimum gray scale weight, a ramp pulse having a voltage V _S of a first level is applied to the Y electrode lines, and the X electrode line The voltage applied to the field is preferably maintained at a second level, where the second level is preferably the ground level V _G.

In addition, in the sub-field SF1 having the minimum weight, one ramp pulse is applied as the sustain pulse. Thus, as shown in FIG. 8, one display-hold is maintained for each display electrode line group at the mixed driving time M1. It is desirable to have only time. Therefore, each display electrode line group has only one display-holding time at one addressing time within the mixing drive time M1, and no discharge is caused at the display-holding time following the addressing of the other display electrode line groups. It is preferable.

In addition, as shown in FIG. 8, in the sub-field SF1 having the minimum weight, it is preferable that the common display-hold time is omitted unlike the case of the fourth sub-field shown in FIG. 6.

According to the present invention, it is possible to reduce the minimum unit light of the sustain discharge to increase the low gradation power. In particular, in the case where the discharge is stabilized by the mixed driving method as in the present invention, even when the sustain pulse is applied to the lamp pulse, the discharge can be stably generated. It will be a more effective way to increase gradation expression.

10 is a block diagram illustrating an apparatus for driving a plasma display panel according to the present invention.

Referring to the drawing, the driving apparatus of the plasma display panel 100 includes a controller 200, an address driver 300, an X driver 500, and a Y driver 400. The controller 200 generates driving control signals S _A , S _Y , and S _X according to the image signal. The address driver 400 processes the address signal S _A among the driving control signals S _A , S _Y , and S _X from the control unit 200 to generate a display data signal, and generates the display data signal. Applied to the address electrode lines. The X driver 500 processes the X driving control signal S _X among the driving control signals S _A , S _Y , and S _X from the controller 200 and applies the X driving control signal S _X to the X electrode lines. The Y driver 400 processes the Y driving control signal S _Y among the driving control signals S _A , S _Y , and S _X from the controller 200 and applies the Y driving control signal S _Y to the Y electrode lines.

The plasma display panel driving apparatus according to the present invention drives the plasma display panel by the method of driving the discharge display panel of FIGS. 4 to 9.

According to the method and apparatus for driving a discharge display panel by address-display mixing according to the present invention, the following effects are obtained.

First, it is possible to improve the low gradation expression power by reducing the light emission amount of the minimum unit light displayed. In addition, it is possible to improve not only low gray level expressive power but also overall gray level expressive power.

In addition, by applying the address-display mixed driving method, the waiting time until the other storage electrode line pairs are all addressed after the discharge cells are addressed can be shortened to stabilize the sustain discharge, in particular, the sustain in the minimum unit light. The discharge can be stabilized.

In addition, the sustain discharge is stabilized, and stable sustain discharge can be obtained even if the widths of the scan pulse and the address pulse applied in the address period are narrower. Therefore, the time required for addressing the entire discharge cells is reduced, so that more time can be allocated to the sustain discharge during one TV field time. Therefore, the brightness of the screen can be improved, and a high gradation device can be realized even for a large panel having many scanning lines.

Although the present invention has been described with reference to one embodiment shown in the accompanying drawings, it is merely an example, and those skilled in the art may realize various modifications and equivalent other embodiments therefrom. I can understand. Accordingly, the true scope of protection of the invention should be defined only by the appended claims.

1 is a partial perspective view showing the structure of a conventional three-electrode surface discharge plasma display panel.

FIG. 2 is an electrode array diagram schematically illustrating an electrode array of the plasma display panel of FIG. 1.

FIG. 3 is a diagram illustrating driving amounts of light emitted from a driving waveform and a subfield of the plasma display panel of FIG. 1.

4 is a timing diagram illustrating a method of driving a discharge display panel by address-display mixing according to a preferred embodiment of the present invention.

5 is a timing diagram illustrating a method of driving a discharge display panel by address-display mixing according to another embodiment of the present invention.

FIG. 6 is a timing diagram illustrating the fourth sub-field in more detail in the method of driving the discharge display panel by the address-display mixing of FIG. 5.

FIG. 7 is a timing diagram illustrating an example of potential waveforms of driving signals applied to respective electrode lines in the fourth sub-field of FIG. 5 when the display electrode line pairs are grouped only into the first and second display electrode line groups. FIG. .

8 is a timing diagram showing in detail a sub-field having a minimum weight in a method of driving a discharge display panel by address-display mixing according to another embodiment of the present invention.

9 is a timing diagram showing an example of potential waveforms of driving signals applied to respective electrode lines in a sub-field having the minimum weight of FIG. 8 when the display electrode line pairs are grouped only into the first and second display electrode line groups. FIG. It is also.

10 is a block diagram illustrating an apparatus for driving a plasma display panel according to the present invention.

<Explanation of symbols for the main parts of the drawings>

100: plasma display panel,

200: control unit, 300: address driver,

400: Y driving unit, 500: X driving unit,

A ₁ ... A _m : address electrode, Y ₁ ... Y _n : Y electrode,

X ₁ ... X _n : X electrode.

Claims (6)

A frame is formed by processing an image signal input from an external device for a discharge display panel in which unit cells are formed in regions where address electrode lines intersect with display electrode line pairs in which X electrode lines and Y electrode lines are alternately arranged side by side. Performing time division gray scale display by dividing each frame into a plurality of sub-fields having respective gray scale weights, such that at least one pair of display electrode lines is included in one display electrode line group. A display electrode line pair is driven by grouping two or more display electrode line groups. The display electrode line groups may include a first display electrode line group and a second display electrode line group. At least one of the sub-fields, An addressing time for selecting cells to be displayed with respect to the first display electrode line group, A display-hold time for displaying the selected cells by applying a sustain pulse to the electrode lines of the first display electrode line group; An addressing time for the second display electrode line group, and Sequentially including display-hold time for the second display electrode line groups; At least one of the sub-fields includes a sub-field with a minimum gray scale weight, and wherein the sustain pulse in the sub-field with the minimum gray weight is a ramp pulse having at least one slope; How to drive the panel. The method of claim 1, And a sustain pulse applied to each pair of display electrode lines at a display-hold time in the sub-field having the minimum gray scale weight is one lamp pulse. The method of claim 1, Discharge display panel, characterized in that the display-holding time is selectively performed for the cells of the other display electrode line groups that have already performed the addressing time while performing the display-holding time for the cells of the second display electrode line group. Method of driving. The method of claim 1, At the display-hold time in the sub-field with the minimum gray scale weight, a ramp pulse having a voltage of a first level is applied to the Y electrode lines, and a voltage applied to the X electrode lines maintains a second level. A drive method for a discharge display panel, characterized in that. The method of claim 4, wherein And the second level is a ground level. A drive device for a discharge display panel for driving the discharge display panel by the method for driving the discharge display panel according to any one of claims 1 to 5.