KR100581876B1 - Method for driving discharge display panel by address-display mixing - Google Patents

Abstract

In the method of driving the discharge display panel according to the present invention, the first and second sub-field types are alternately used in units of at least one sub-field. Each sub-field of the first sub-field type has an addressing time for the first display electrode-line group, a display-hold time for the first display electrode-line group, and an addressing time for the second display electrode-line group. And display-hold time for the first and second display electrode-line groups sequentially. Each sub-field of the second sub-field type has an addressing time for the second display electrode-line group, a display-hold time for the second display electrode-line group, and an addressing time for the first display electrode-line group. And display-hold time for the first and second display electrode-line groups sequentially.

Description

Method for driving discharge display panel by address-display mixing

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

FIG. 2 is a cross-sectional view illustrating an example of one display cell of the panel of FIG. 1.

3 is a block diagram illustrating a conventional driving device of the plasma display panel of FIG. 1.

FIG. 4 is a timing diagram illustrating a unit frame used in an address-display mixing driving method according to an embodiment of the present invention.

FIG. 5 is a timing diagram illustrating voltage waveforms of driving signals applied to respective electrode lines in each of the sub-fields SF1, SF3, SF5 of the first sub-field type in FIG. 4.

FIG. 6 is a cross-sectional view illustrating a wall charge distribution of one display cell immediately after a gradual rising voltage is applied to the Y electrode lines at the reset time of FIG. 5.

7 is a cross-sectional view illustrating a wall charge distribution of one display cell at the end of the reset time of FIG. 5.

FIG. 8 is a timing diagram illustrating voltage waveforms of driving signals applied to respective electrode lines in each of the sub-fields SF2 and SF4 of the second sub-field type in FIG. 4.

FIG. 9 is a timing diagram illustrating a unit frame used in an address-display mixing driving method according to another embodiment of the present invention.

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

1 ... plasma display panel, 10 ... front glass substrate,

11, 15 dielectric layer, 12 protective layer,

13 ... back glass substrate, 14 ... discharge space,

16 fluorescent layers, 17 bulkheads,

X ₁ , ..., X _n ... X electrode lines, Y ₁ , ..., Y _n ... Y electrode lines,

A _R1 , ..., A _Bm ... address electrode lines, X _na , Y _na ... transparent electrode lines,

X _nb , Y _nb ... metal electrode lines, SF1, ... SF5 ... sub-field,

S _Y1 , ..., S _Y123 ... Y electrode drive signals, 62 ... logical control,

S _X1 , ..., S _Xn ... X electrode drive signals, 63 .. address driver,

S _AR1 .. _ABm ... display data signals, 64 ... X driver,

65 ... Y drive unit, 66 ... image processing unit.

The present invention relates to a method of driving a discharge display panel, and more particularly, to a discharge display panel in which display electrode line pairs are formed side by side, and address electrode lines are formed to be spaced apart from and cross the display electrode line pairs. The present invention relates to a method of driving a discharge display panel in which a plurality of sub-fields are included in a unit frame to perform gradation display by time division driving.

1 shows a structure of a conventional discharge display panel, for example, a plasma display panel of a three-electrode surface discharge method. FIG. 2 shows an example of one display cell of the panel of FIG. 1. 1 and 2, between the front and rear glass substrates 10 and 13 of the conventional surface discharge plasma display panel 1, the address electrode lines A _R1 , A _G1 ,..., A _Gm , A _Bm ), dielectric layers 11 and 15, Y electrode lines (Y ₁ , ..., Y _n ), X electrode lines (X ₁ , ..., X _n ), fluorescent layer 16, The partition 17 and the magnesium monoxide (MgO) layer 12 as a protective layer are provided.

The address electrode lines A _R1 , A _G1 ,..., A _Gm , A _Bm are formed in a predetermined pattern on the front side of the rear glass substrate 13. The lower dielectric layer 15 is entirely applied in front of the address electrode lines A _R1 , A _G1 ,..., A _Gm , A _Bm . In front of the lower dielectric layer 15, barrier ribs 17 are formed in a direction parallel to the address electrode lines A _R1 , A _G1 ,..., A _Gm , A _Bm . These partitions 17 function to partition the discharge area of each display cell and prevent optical cross talk between each display cell. The fluorescent layer 16 is formed between the partition walls 17.

The X electrode lines X ₁ ,..., X _n and the Y electrode lines Y ₁ , ..., Y _n constituting the display electrode line pairs are the address electrode lines A _R1 , A _G1,. .., A _Gm , A _Bm ) is formed in a constant pattern on the back of the front glass substrate 10 to be orthogonal. Each intersection sets a corresponding display cell. Each X electrode line (X ₁ , ..., X _n ) and each Y electrode line (Y ₁ , ..., Y _n ) is a transparent electrode line of a transparent conductive material such as indium tin oxide (ITO) or the like (FIG. 2). X _na , Y _na ) and a metal electrode line (X _nb , Y _nb of FIG. 2) for increasing conductivity are formed. The front dielectric layer 11 is formed by applying the entire surface to the rear of the X electrode lines X ₁ ,..., X _n and the Y electrode lines Y ₁ ..., Y _n . A protective layer 12 for protecting the panel 1 from a strong electric field, for example, a magnesium monoxide (MgO) layer, is formed by applying the entire surface to the back of the front dielectric layer 11. The plasma forming gas is sealed in the discharge space 14.

In the driving method basically applied to such a plasma display panel, reset, address, and display-sustain steps are sequentially performed in the unit sub-field. In the reset phase, the charge states of all display cells are uniform. In the addressing step, a predetermined wall voltage is generated in the selected display cells. In the display-holding step, a predetermined alternating voltage is applied to all the XY electrode line pairs so that the display cells in which the wall voltage is formed in the addressing step cause display-holding discharges. In this display-holding step, a plasma is formed in the discharge space 14, i.e., the gas layer, of the selected display cells causing the display-holding discharge, and the fluorescent layer (16 in FIG. 1) is excited by the ultraviolet radiation to emit light. Is generated.

Referring to FIG. 3, a typical driving device of the plasma display panel 1 of FIG. 1 includes an image processor 66, a controller 62, an address driver 63, an X driver 64, and a Y driver 65. Include. The image processing unit 66 converts an external analog image signal into a digital signal to convert an internal image signal, for example, 8 bits of red (R), green (G), and blue (B) image data, a clock signal, vertical and horizontal, respectively. Generate sync signals. The controller 62 generates driving control signals S _A , S _Y , and S _X according to an internal image signal from the image processor 66. The address driver 63 processes the address signal S _A among the driving control signals S _A , S _Y , and S _X from the controller 62 to generate a display data signal, and generates the generated display data signal. Applied to the address electrode lines. The X driving unit 64 processes the X driving control signal S _X among the driving control signals S _A , S _Y , and S _X from the control unit 62, and applies the X driving control signal S _X to the X electrode lines. The Y driver 65 processes the Y driving control signal S _Y among the driving control signals S _A , S _Y , and S _X from the controller 62 and applies the Y driving control signal S _Y to the Y electrode lines.

As a typical driving method performed by the driving apparatus of the plasma display panel 1 as described above, an address-display separation driving method may be cited (see US Patent No. 5,541,618). In this address-display separation driving method, the addressing time and the display-sustain time are separated from each other in each sub-field included in the unit frame. Therefore, at the addressing time, display cells of each XY electrode line pair must wait until all display cells of other XY electrode line pairs are addressed after their addressing is performed. As such, the wall charge state of each display cell is disturbed due to the presence of the waiting time after the addressing is performed, and thus the accuracy of the display-holding discharge is deteriorated at the display-holding time which starts at the end of the addressing time.

SUMMARY OF THE INVENTION An object of the present invention is a method of driving a discharge display panel, wherein the display starts at the end of the addressing time by reducing the waiting time after the discharge cells are addressed and waiting for all other XY electrode line pairs to be addressed. The present invention provides a method of driving a discharge display panel that can increase the accuracy of display-hold discharge in a holding time.

Another object of the present invention is to provide a method of driving a discharge display panel in which display electrode line pairs are driven by grouping a plurality of display electrode line groups so that at least one display electrode line pair is included in one display electrode line group. The present invention provides a method of driving a discharge display panel capable of increasing display uniformity among the plurality of display electrode-line groups.

In order to achieve the above object, the present invention relates to a discharge display panel in which display electrode line pairs are formed in parallel and address electrode lines are spaced apart from and intersect with the display electrode line pairs. In order to perform gradation display by time division driving, the display electrode line pairs are driven by grouping the display electrode line pairs into at least first and second display electrode line groups so that at least one display electrode line pair is included in one display electrode line group. It is a driving method of a discharge display panel. Here, the first and second sub-field types are used alternately in at least one sub-field unit. Each sub-field of the first sub-field type has an addressing time for the first display electrode-line group, a display-hold time for the first display electrode-line group, and the second display electrode-line group And addressing time for the first and second display electrode-line groups. Each sub-field of the second sub-field type has an addressing time for the second display electrode-line group, a display-hold time for the second display electrode-line group, and the first display electrode-line group And addressing time for the first and second display electrode-line groups.

According to the driving method of the discharge display panel of the present invention, in each sub-field of the first sub-field type, the second display electrode- after the addressing of the first display electrode-line group is completed. The display-maintenance discharge for the first display electrode-line group is performed before the addressing for the line group. Similarly, in each sub-field of the second sub-field type, after performing addressing for the second display electrode-line group is completed, the second display rather than addressing for the first display electrode-line group. Display-holding discharge for the electrode-line group is performed first. Accordingly, since the waiting time for the display cells of each XY electrode line pair is addressed after all of the display cells of the other XY electrode line pairs are addressed is shortened, the display starts at the end of the addressing time. In the holding time, the accuracy of the display-holding discharge can be increased.

In addition, since the first and second sub-field types are alternately used in units of at least one sub-field, the influence of the display-holding operation of the first display electrode-line group is influenced by the second display electrode-line group. Without continuously affecting addressing, the influence of the display-holding operation of the second display electrode-line group does not continuously affect the addressing of the first display electrode-line group. Accordingly, display uniformity among the plurality of display electrode-line groups can be increased.

Hereinafter, preferred embodiments according to the present invention will be described in detail.

4 shows a unit frame used in the address-display mixing driving method according to an embodiment of the present invention. In FIG. 4, reference numerals SF1 to SF5 denote sub-fields respectively allocated within a unit frame, Y _GOD denotes a first Y electrode-line group including odd-numbered Y electrode-lines, and Y _GEV denotes even-numbered Y electrode- A second Y electrode-line group comprising lines, R1 to R5 are reset times, and M1 to M5 are mix times where display-hold time T2 is present between addressing times T1 and T3, CS1 CS5 to indicate common display-hold times, and AS1 to AS5 indicate correction display-hold times, respectively.

Referring to FIG. 4, each of the sub-fields SF1, SF3, SF5 of the first sub-field type has a reset time R1 for the first and second display electrode-line groups Y _GOD , Y _GEV . , R3, or R5), the first display electrode line group (Y _GOD) addressing time (T1), the first display electrode on-line group (display for the Y _GOD) - a holding time (T2), the second display addressing period (T3) of the line group (Y _GEV), the first and the second display electrode-electrode line groups common display for (Y _GOD, Y _GEV) - a holding time (CS1, CS3, or CS5), And a correction display-hold time AS1, AS3, or AS5 for the second display electrode-line group Y _GEV .

Further, each of the sub-fields SF2 and SF4 of the second sub-field type has a reset time R2 or R4 for the first and second display electrode-line groups Y _GOD , Y _GEV , and a second. the line group (Y _GOD) - display electrode line group addressing period (T1), a second display electrode corresponding to the (Y _GEV) - line group display for the (Y _GEV) - a holding time (T2), the first display electrode Addressing time (T3), common display-hold time (CS2 or CS4) for first and second display electrode-line groups (Y _GOD , Y _GEV ), and first display electrode-line group (Y _GOD ) And a correction display-hold time (AS2 or AS4) for the sequential order.

As such, since the first and second sub-field types are alternately used in units of at least one sub-field, the influence of the display-holding operation of the first display electrode-line group Y _GOD is influenced by the second display electrode- without continuous short to the addressing of the line group (Y _GEV), the second display electrode line group display (Y _GEV) - effect of the holding operation is the first display electrode addressed consistently short in the line group (Y _GOD) Do not. Accordingly, display uniformity among the plurality of display electrode-line groups can be increased.

An operation in each of the sub-fields SF1, SF3, SF5 of the first sub-field type is described as follows.

At reset time R1, R3, or R5, the charge states of all display cells are uniform.

At the first addressing time T1 within the mixing time M1, M3, or M5, a predetermined wall voltage is generated in the selected display cells of the first Y electrode-line group Y _GOD . In the display-hold time T2 within the mixing time M1, M3, or M5, a predetermined alternating voltage is applied to the odd-numbered XY electrode line pairs constituting the addressed first Y electrode-line group Y _GOD . As a result, the display cells selected at the first addressing time T1 and formed with a predetermined wall voltage cause display-holding discharge. At the second addressing time T3 within the mixing time M1, M3, or M5, a predetermined wall voltage is generated in the selected display cells of the second Y electrode-line group Y _GEV .

At the mixing time M1, M3, or M5, after the addressing of the first Y electrode-line group Y _GOD is completed, the first addressing of the second Y electrode-line group Y _GEV is performed. The display-maintenance discharge for the Y electrode-line group Y _GOD is first performed. Accordingly, the wait time of waiting for all the display cells of the second Y electrode-line group Y _GEV to be addressed after the display cells of the first Y electrode-line group Y _GOD is performed is short. Therefore, the accuracy of the display-hold discharge can be increased at the common display-hold time CS1, CS3, or CS5 starting at the end of the second addressing time T3.

In the common display-hold time CS1, CS3, or CS5, the first Y electrode-line group Y _GOD and the second Y electrode-line group Y during a time proportional to the gray weighting value of its sub-field. Display cells selected from among the display cells of _GEV ) cause a display-holding discharge.

In the correction display-hold time AS1, AS3, or AS5, the display cells selected from among the display cells of the second Y electrode-line group Y _GEV are displayed for the first Y electrode-line group Y _GOD . The display-holding discharge is caused during the same time as the holding time T2.

Meanwhile, operation of each of the sub-fields SF2 and SF4 of the second sub-field type will be described as follows.

At the reset time R2 or R4, the charge states of all display cells are uniform.

At the first addressing time T1 within the mixing time M2 or M5, a predetermined wall voltage is generated in selected display cells of the second Y electrode-line group Y _GEV . In the display-hold time T2 within the mixing time M2 or M5, a predetermined alternating voltage is applied to the even-numbered XY electrode line pairs constituting the addressed second Y electrode-line group Y _GEV , thereby providing The display cells sustaining the display cells selected at one addressing time T1 and having a predetermined wall voltage are formed. At the second addressing time T3 within the mixing time M2 or M5, a predetermined wall voltage is generated in the selected display cells of the first Y electrode-line group Y _GOD .

In the mixing time M2 or M5, after the addressing for the second Y electrode-line group Y _GEV is completed, the second Y electrode-rather than the addressing for the first Y electrode-line group Y _GOD -is completed. The display-maintenance discharge for the line group Y _GEV is first performed. Accordingly, the waiting time of waiting for all the display cells of the first Y electrode-line group Y _GOD to be addressed after the display cells of the second Y electrode-line group Y _GEV are performed is short. Therefore, the accuracy of the display-hold discharge can be increased at the common display-hold time CS2 or CS4 starting at the end of the second addressing time T3.

For the common display-hold time CS2 or CS4, the first Y electrode-line group Y _GOD and the second Y electrode-line group Y _{GEV for} a time proportional to the gray weighting value of its sub-field. Display cells selected from among the display cells cause a display-holding discharge.

For the correction display-hold time AS2 or AS4, the display cells selected from among the display cells of the first Y electrode-line group Y _GOD are the display-hold time for the second Y electrode-line group Y _GEV . Cause a display-holding discharge during the same time as T2).

FIG. 5 shows voltage waveforms of driving signals applied to respective electrode lines in each of the sub-fields SF1, SF3, SF5 of the first sub-field type in FIG. 4. In FIG. 5, reference numeral S _{AR1 ..ABm} denotes display data signals applied to address electrode lines (A _R1 to A _{Bm in} FIG. 1) from an address driver (63 in FIG. 3), and S _X1 to S _Xn denotes an X driver. The driving signals applied to all the X electrode lines (X ₁ ,..., X _{n in} FIG. 1) from 64 in FIG. 3, and S _YGOD and S _YGEV are _displayed from the Y driving unit (65 in FIG. 3). For driving signals applied to the electrode-line group, R1 is a reset time, M1 is a mixing time in which the display-holding time T2 is present between the addressing times T1 and T3, and CS1 is a common display-holding time. And AS1 indicate the calibration display-hold time, respectively. FIG. 6 shows a wall charge distribution of one display cell at a time point immediately after a gradual rising voltage is applied to the Y electrode lines at the reset time R1 of FIG. 5. FIG. 7 shows the wall charge distribution of one display cell at the end of the reset time R1 of FIG. 5. 1, 4, and 5, the operation of each of the sub-fields SF1, SF3, SF5 of the first sub-field type of FIG. 4 will be described in detail as follows.

First, an operation process of the reset time R1 will be described in detail.

In the first time of the reset period (R1), the voltage applied to the X electrode lines _{(X 1, ..., X n} ) is continued to rise to a second voltage (V _S) from the ground voltage (V _G) . Here, the Y electrode lines Y ₁ ,..., Y _n as second display electrode lines and the address electrode lines A _R1 , ..., A _Bm are ground voltages V _G as a third voltage. ) Is applied. Accordingly, between the X electrode lines X ₁ ,..., X _n as the first display electrode lines and the Y electrode lines Y ₁ ,..., Y _n , and the X electrode lines X. A weak discharge occurs between ₁ , ..., X _n ) and the address electrode lines A ₁ , ..., A _m , and is negatively connected around the X electrode lines X ₁ , ..., X _n . Polar wall charges are formed.

In the second time as a wall electric charge storage time of the reset period (R1), Y electrode lines _{(Y 1, ..., Y n} ) a second voltage (V _S voltage is applied from the second voltage (V _S) to ) Is continuously raised to the first voltage V _SET + V _{S which} is higher than the sixth voltage V _SET . Here, the ground voltage V _G is applied to the X electrode lines X ₁ ,..., X _n and the address electrode lines A _R1 ..., A _Bm . Accordingly, a weak discharge occurs between the Y electrode lines (Y ₁ ,..., Y _n ) and the X electrode lines (X ₁ ,..., X _n ), while the Y electrode lines (Y ₁ , A weaker discharge occurs between ..., Y _n ) and the address electrode lines A _R1 , ..., A _Bm . Here, Y electrode lines _{(Y 1, ..., Y n} ) and the address electrode lines _{(A R1, ..., A Bm} ) than the discharge electrode line Y between the (Y _1, ..., Y _The reason why the discharge between _n ) and the X electrode lines (X ₁ , ..., X _n ) becomes stronger is that the negative wall charges around the X electrode lines (X ₁ , ..., X _n ) Because they were formed. Accordingly, many negative wall charges are formed around the Y electrode lines (Y ₁ , ..., Y _n ), and positive wall charges are formed around the X electrode lines (X ₁ , ..., X _n ). Are formed, and less positive wall charges are formed around the address electrode lines A _R1 , ..., A _Bm (see FIG. 6).

In the third time as the wall charge distribution time of the reset time R1, Y is applied while the voltage applied to the X electrode lines X ₁ ,..., X _n is maintained at the second voltage V _S. The voltage applied to the electrode lines Y ₁ ,..., Y _n is continuously lowered from the second voltage V _S to the negative voltage V _SC . Here, the ground voltage V _G is applied to the address electrode lines A _R1 ,..., A _Bm . Accordingly, due to the weak discharge between the X electrode lines (X ₁ ,..., X _n ) and the Y electrode lines (Y ₁ , ..., Y _n ), the Y electrode lines (Y ₁ ,. Some of the negative wall charges around..., Y _n ) move around the X electrode lines X ₁ ,..., X _n (see FIG. 7).

Accordingly, the wall electric-potential of the X electrode lines X ₁ , ..., X _n is lower than the wall potential of the address electrode lines A _R1 , ..., A _Bm and the Y electrode Higher than the wall potential of the lines Y ₁ , ..., Y _n . Accordingly, the addressing voltage required for the opposing discharge between the selected address electrode lines and the Y electrode line at the subsequent addressing time A can be lowered.

At a first time T1 within the mixing time M1, an addressing step for the first Y electrode-line group Y _GOD is performed. To this end, the scan voltage of the negative voltage (V _SC ) is the first voltage while the voltage applied to all the X electrode lines (X ₁ , ..., X _n ) is maintained at the second voltage (V _S ). The display data signals are sequentially applied to the odd-numbered Y electrode lines constituting the display electrode-line group Y _GOD and simultaneously applied to the address electrode lines A _R1 ,..., A _Bm . Accordingly, a predetermined wall voltage is generated in the selected display cells of the first Y electrode-line group Y _GOD . More specifically, the positive wall potential is generated around the Y electrode of the selected display cells, and the negative wall potential is generated around the address electrode. While the scan voltage is not applied, the positive bias voltage V _{SC_H} is applied to all of the Y electrode lines Y ₁ ,..., Y _n .

In the second time T2 in the mixing time M1, the display-maintaining step of the addressing-first Y electrode-line group Y _GOD is performed. To this end, an AC voltage is applied to the X electrode lines and the Y electrode lines corresponding to the first Y electrode-line group Y _GOD . More specifically, pulses of the second voltage V _S are alternately applied to the odd-numbered Y electrode lines and the X electrode lines constituting the first display electrode line group.

According to the driving method as described above, an addressing step for the second Y electrode-line group Y _GEV is performed at the third time T3.

At the common display-hold time CS1 set to be proportional to the gray scale weight value of each sub-field (for example, SF1), the display-hold operation is performed for all the display electrode-line groups. That is, an alternating voltage is applied to all XY electrode line pairs X ₁ Y ₁ to X _n Y _n .

In the correction display-hold time AS1, for the XY electrode line pairs corresponding to the second Y electrode-line group Y _GEV , an alternating voltage is applied for the same time as the first time T1 in the mixing time M1. Is approved. Here, the first display electrode, so only the line group is a ground voltage (V _G) to the Y electrode lines (Y _GOD), a first display electrode, a sustain discharge does not occur in-line group (Y _GOD) on the display.

FIG. 8 shows voltage waveforms of driving signals applied to respective electrode lines in each of the sub-fields SF2 and SF4 of the second sub-field type in FIG. 4. In FIG. 8, the same reference numerals as used in FIG. 5 indicate objects of the same function.

The operation at reset time R2 is as described in reset time R2 of FIG. 5.

At the first time T1 within the mixing time M2, an addressing step for the second Y electrode-line group Y _GEV is performed. To this end, while the voltage applied to all the X electrode lines X ₁ ,..., X _n is maintained at the second voltage V _S , the scan voltage of the negative voltage V _SC is the second voltage. The display data signals are sequentially applied to the even-numbered Y electrode lines constituting the display electrode-line group Y _GEV and simultaneously applied to the address electrode lines A _R1 ,..., A _Bm . Accordingly, a predetermined wall voltage is generated in the selected display cells of the second Y electrode-line group Y _GEV . More specifically, the positive wall potential is generated around the Y electrode of the selected display cells, and the negative wall potential is generated around the address electrode. While the scan voltage is not applied, the positive bias voltage V _{SC_H} is applied to all of the Y electrode lines Y ₁ ,..., Y _n .

In the second time T2 in the mixing time M2, the display-holding step for the second Y electrode-line group Y _GEV where addressing is completed is performed. To this end, an AC voltage is applied to the X electrode lines and the Y electrode lines corresponding to the second Y electrode-line group Y _GEV . More specifically, pulses of the second voltage V _S are alternately applied to the even-numbered Y electrode lines and the X electrode lines constituting the second display electrode-line group.

According to the driving method as described above, an addressing step for the first Y electrode-line group Y _GOD is performed at the third time T3.

At the common display-hold time CS2 set to be proportional to the gradation weighting value of each sub-field (eg, SF2), the display-hold operation is performed for all the display electrode-line groups. That is, an alternating voltage is applied to all XY electrode line pairs X ₁ Y ₁ to X _n Y _n .

In the correction display-hold time AS2, for the XY electrode line pairs corresponding to the first Y electrode-line group Y _GOD , an alternating voltage is applied for the same time as the first time T1 in the mixing time M2. Is approved. Here, the second display electrode line group so is only (Y _GEV) the ground voltage (V _G) to the Y electrode lines of the second display electrode line groups at the display (Y _GEV) - does not cause sustain discharge.

FIG. 9 shows a unit frame used in the address-display mixing driving method according to another embodiment of the present invention. In FIG. 9, the same reference numerals as used in FIG. 4 indicate objects of the same function. The difference with respect to FIG. 4 of the driving method of FIG. 9 is that the first sub-field type is applied to the third and fourth sub-fields SF3 and SF4 and the second sub-field type is the first and second. , And fifth sub-fields SF1, SF2, SF5. The driving method of the first and second sub-field types is as described in detail with reference to FIGS. 4 to 8.

As described above, according to the driving method of the discharge display panel according to the present invention, in each sub-field of the first sub-field type, after the addressing of the first display electrode-line group is completed, The display-holding discharge for the first display electrode-line group is performed before the addressing for the two display electrode-line groups. Similarly, in each sub-field of the second sub-field type, the second display electrode-line rather than the addressing for the first display electrode-line group after completion of addressing for the second display electrode-line group is completed. Display-keeping discharge for the group is performed first. Accordingly, since the waiting time for the display cells of each XY electrode line pair is addressed after all of the display cells of the other XY electrode line pairs are addressed is shortened, the display starts at the end of the addressing time. In the holding time, the accuracy of the display-holding discharge can be increased.

In addition, since the first and second sub-field types are used alternately in units of at least one sub-field, the influence of the display-holding operation of the first display electrode-line group may affect the addressing of the second display electrode-line group. Not continuously, and the influence of the display-holding operation of the second display electrode-line group does not continuously affect the addressing of the first display electrode-line group. Accordingly, display uniformity among the plurality of display electrode-line groups can be increased.

The present invention is not limited to the above embodiments, but may be modified and improved by those skilled in the art within the spirit and scope of the invention as defined in the claims.

Claims (17)

For a discharge display panel in which display electrode line pairs are formed side by side and address electrode lines are formed to be spaced apart from and intersect with the display electrode line pairs, a plurality of sub-fields are included in a unit frame to display gray scales by time division driving. A method of driving a discharge display panel in which the display electrode line pairs are driven by grouping the display electrode line pairs into at least first and second display electrode-line groups such that at least one display electrode line pair is included in one display electrode-line group. , The first and second sub-field types are used alternately in at least one sub-field unit, Wherein each sub-field of the first sub-field type is An addressing time for the first display electrode-line group, a display-holding time for the first display electrode-line group, an addressing time for the second display electrode-line group, and the first and second display electrodes Sequentially including display-hold time for the group of lines, Wherein each sub-field of the second sub-field type is An addressing time for the second display electrode-line group, a display-hold time for the second display electrode-line group, an addressing time for the first display electrode-line group, and the first and second display electrodes A method of driving a discharge display panel which sequentially comprises display-hold time for the line groups. The method of claim 1, wherein at an addressing time for the first display electrode-line group, And a predetermined wall voltage is generated in the display cells selected from among the display cells of the first display electrode-line group. The method of claim 2, wherein at display-hold time for the first display electrode-line group, And a display-holding discharge occurs in the selected display cells of the display cells of the first display electrode-line group. The method of claim 3, wherein, at display-hold time for the first display electrode-line group, And an alternating current voltage is applied to the display cells of the first display electrode-line group. The method of claim 1, wherein at an addressing time for the second display electrode-line group, And a predetermined wall voltage is generated in the display cells selected from among the display cells of the second display electrode-line group. The method of claim 5, wherein at display-hold time for the second display electrode-line group, And a display-holding discharge occurs in the selected display cells of the display cells of the second display electrode-line group. The method of claim 6, wherein at display-hold time for the second display electrode-line group, And an alternating current voltage is applied to the display cells of the second display electrode line group. The method of claim 1, wherein at display-hold time for the first and second display electrode-line groups, And a display-holding discharge in a selected one of the display cells of the first and second display electrode-line groups. The method of claim 8, wherein in display-hold time for the first and second display electrode-line groups, And an alternating current voltage is applied to the display cells of the first and second display electrode-line groups. The method of claim 1, wherein each sub-field of the first sub-field type is: And a reset time at which the charge states of all displays of at least the first and second display electrode-line groups are uniform before the start of the addressing time for the first display electrode-line group. The method of claim 1, wherein each sub-field of the second sub-field type is: And a reset time wherein the charge states of all displays of the at least first and second display electrode-line groups are uniform before the start of the addressing time for the second display electrode-line group. The method of claim 1, wherein each sub-field of the first sub-field type is: When the display-hold time for the first and second display electrode-line groups ends, among the display cells of the first and second display electrode-line groups for a time proportional to the gray-weighted value of its sub-field. And a common display-hold time in which the selected display cells cause display-hold discharge. 13. The method of claim 12, wherein each sub-field of the first sub-field type is: When the common display-hold time ends, the selected display cells among the display cells of the second display electrode-line group undergo display-hold discharge during the same time as the display-hold time for the first display electrode-line group. A method of driving a discharge display panel further comprising a calibrating display-holding time. The method of claim 1, wherein each sub-field of the second sub-field type is: When the display-hold time for the first and second display electrode-line groups ends, among the display cells of the first and second display electrode-line groups for a time proportional to the gray-weighted value of its sub-field. And a common display-hold time in which the selected display cells cause display-hold discharge. 15. The method of claim 14, wherein each sub-field of the second sub-field type is: When the common display-hold time ends, the selected display cells among the display cells of the first display electrode-line group undergo display-hold discharge during the same time as the display-hold time for the second display electrode-line group. A method of driving a discharge display panel further comprising a calibrating display-holding time. The method of claim 1, wherein each sub-field of the first sub-field type is: When the display-hold time for the first and second display electrode-line groups ends, display cells selected from the display cells of the second display electrode-line group are displayed for the first display electrode-line group. A method of driving a discharge display panel further comprising a correction display-hold time that causes display-hold discharge during the same time as the hold time. The method of claim 1, wherein each sub-field of the second sub-field type is: When the display-hold time for the first and second display electrode-line groups ends, display cells selected from the display cells of the first display electrode-line group are displayed for the second display electrode-line group. A method of driving a discharge display panel further comprising a correction display-hold time that causes display-hold discharge during the same time as the hold time.

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