JPWO2008032408A1 - Plasma display panel - Google Patents

Abstract

In the present invention, when a weak reset discharge is generated between the display electrodes by applying a voltage that increases or decreases with the lapse of time between the display electrodes of the plasma display panel, an irregularity of strong discharge is generated. The purpose is to suppress the occurrence. The plasma display panel of the present invention is configured by arranging a front substrate (11) and a rear substrate (21) to face each other. A partition wall (29) for partitioning the unit light emitting region is provided on the rear substrate. On the front substrate, a plurality of display electrode pairs (X, Y) arranged with a discharge slit (47) for surface discharge are arranged with a discharge region (49) therebetween, and the plurality of display electrodes are arranged. The pair of display electrodes is covered with a dielectric layer (17). The dielectric layer has a conductive particle containing portion (45) in the discharge region. Wall charges that accumulate on the surface of the region to be discharged of the dielectric layer and cause strong discharge leak to the display electrode through the conductive particle containing portion and are removed.

Description

  The present invention relates to a plasma display panel.

  FIG. 11 is an exploded perspective view of a general surface discharge type plasma display panel (hereinafter referred to as “PDP”) 10 and shows a basic structure of a portion corresponding to one pixel EG.

  The PDP 10 is a PDP having a three-electrode structure called a reflection type according to the classification according to the arrangement form of the phosphors. It consists of The front substrate structure includes a front substrate 11 made of a glass substrate, a pair of display electrodes X and Y for surface discharge extending in the display line direction, a dielectric layer 17 for AC driving, and a protective film 18 made of MgO. Etc. The back side substrate structure includes a back side substrate 21 made of a glass substrate, stripe-like or grid-like partition walls 29 that divide a discharge space, address electrodes A for selectively emitting light from the unit light emitting region EU, and for full color display. The three primary color phosphors 28R, 28G, and 28B.

  Each display pixel EG is composed of three unit light emitting areas EU arranged in the line direction. The internal discharge space 30 is partitioned for each unit light emitting region (cell) EU in the line direction or in the line direction and the column direction by the partition walls 29, and the gap size is defined. An appropriate discharge gas is enclosed in the discharge space 30.

  Since the display electrodes X and Y are arranged on the display surface H side with respect to the phosphors 28R, 28G, and 28B, the strip-shaped transparent electrode 41 is used in order to widen the surface discharge and minimize the shielding of the display light. And a metal electrode 42 that supplements the conductivity.

  When a predetermined voltage is applied to the display electrodes X and Y, discharge in the surface direction of the substrate (surface discharge) occurs, and the phosphors 28R, 28G and 28B are excited by the ultraviolet rays emitted from the discharge gas to emit light.

  For PDP display, the display electrode Y is used as a scan electrode for row selection, and discharge for addressing (address discharge) is generated between the display electrode Y and the address electrode A. After line-sequential addressing is performed to form a predetermined amount of wall charges in the unit discharge region (cell) EU to be lit, an alternating polarity lighting sustaining voltage is applied simultaneously to the display electrode pairs in all rows, A surface discharge (sustain discharge) is periodically generated in a cell in which a predetermined amount of wall charges is formed.

After the sustain discharge is completed, a blunt wave reset discharge is generated between all the display electrodes X and Y, and wall charges existing on all the display electrodes X and Y are substantially erased (for example, patents). Reference 1). The blunt wave reset discharge is a weak discharge generated between the display electrodes X and Y by applying a voltage that changes (increases or decreases) with the passage of time between the display electrodes X and Y. Thus, the wall charges existing in the dielectric layers on the display electrodes X and Y constituting the cell are substantially erased without causing a strong discharge between the display electrodes X and Y.
JP 2000-75835 A

  As described above, the blunt wave reset discharge is a technique for erasing wall charges by a weak discharge, but the present inventors have found that an irregular strong discharge may occur during the blunt wave reset discharge. I found it. When strong discharge occurs, display quality is deteriorated. Therefore, it is desired to suppress generation of strong discharge.

  This invention is made | formed in view of such a situation, and provides the plasma display panel which can suppress generation | occurrence | production of the strong discharge in blunt wave reset discharge.

Means for Solving the Problems and Effects of the Invention

  The plasma display panel according to the present invention includes a plurality of display electrode pairs arranged on a front side substrate with discharge slits for surface discharge being arranged with non-discharge regions where no discharge occurs, and a dielectric covering the display electrodes. A front panel assembly having a body layer and a rear substrate assembly having a partition wall that partitions adjacent unit light emitting regions on the rear substrate are opposed to each other, and the dielectric layer comprises: The dielectric layer in the non-discharge region includes a conductive particle containing portion.

  As a result of intensive studies, the inventors of the present invention have found that a strong discharge generated during blunt wave reset discharge accumulates on the surface of the dielectric layer in the non-discharge region (usually a negative charge) during the sustain discharge. Got the knowledge that caused by. And based on this knowledge, it discovered that generation | occurrence | production of a strong discharge could be suppressed by providing the electroconductive particle containing part used as the said charge leak path | route in a dielectric material layer, and came to completion of this invention.

  By the way, the above knowledge is obtained based on a graph or the like showing the wall charge distribution after the sustain discharge by the discharge simulation shown in FIG. Here, the graph of FIG. 1 will be described.

  FIG. 1 also shows a cross-sectional view of the display electrodes X and Y. The horizontal axis of the graph of FIG. 1 is an intermediate position between the display electrode X and the display electrode Y (hereinafter referred to as “origin”). The vertical axis represents the density of wall charges existing on the surface of the dielectric layer. The graph of FIG. 1 shows that a negative charge is present on the surface of the dielectric layer near the display electrode X, a positive charge is present on the surface of the dielectric layer near the display electrode Y, and there is a small amount of charge at the origin. Show.

  The points of particular interest in the graph of FIG. 1 are that in both the display electrodes X and Y, the graph drops at a position away from the origin (that is, a position close to the non-discharge region, around the dotted circle in FIG. 1). It is that. This indicates that the amount of negative charge is increasing on the display electrode X side, and that the amount of positive charge is decreasing on the display electrode Y side. This result is considered to be due to the accumulation of unnecessary negative charges at positions close to the non-discharge region in both the display electrodes X and Y. In addition to the above, the inventors also performed a simulation of the blunt wave reset discharge, and found that the negative charge accumulated at a position close to the non-discharge region is not erased by the blunt wave reset discharge.

  By comprehensively considering the results of these simulations and the fact that irregular strong discharges occur during blunt wave reset discharges, negative charges accumulate at positions close to the non-discharge region in sustain discharges. A mechanism has been found in which charges continue to be accumulated without being erased by the blunt wave reset discharge, and when a certain amount of charge is accumulated, a strong discharge is generated during the blunt wave reset discharge.

  Next, the effect | action which can suppress generation | occurrence | production of a strong discharge by providing an electroconductive particle content part in a dielectric material layer is demonstrated using FIG. FIG. 2 is a cross-sectional view of the front substrate structure. In FIG. 2, the display electrode X, the display electrode Y, and the display electrode Y are formed in this order on the front substrate 11, and the dielectric layer 17 covers these display electrodes. A slit between the display electrode X and the display electrode Y is a discharge slit 47 where discharge occurs, and a region between the display electrode Y and the display electrode Y is a non-discharge region 49 where discharge does not occur. A state in which unnecessary wall charges (negative charges) 44 are accumulated on the surface of the dielectric layer 17 in the non-discharge region 49 is schematically shown. Note that FIG. 2 is shown for easy understanding of the present invention, and the present invention is not limited to the configuration of FIG. 2, and actually a protective film such as MgO is formed on the dielectric layer. .

  As described above, it has been found by the present inventors that the strong discharge during the blunt wave reset discharge is caused by the presence of the unnecessary wall charge 44, and the unnecessary wall charge 44 is removed. However, it can be said that it leads to suppressing the strong discharge during the blunt wave reset discharge. For this purpose, in the present invention, the dielectric layer 17 is provided with the conductive particle-containing portion 45 serving as a leakage path for unnecessary wall charges 44. Since the conductive particle containing portion 45 has a relatively low electric resistance value, the wall charges 44 accumulated on the surface of the dielectric layer 17 leak to the display electrode X or Y through the conductive particle containing portion 45. As a result, unnecessary wall charges 44 are removed from the surface of the dielectric layer 17, and as a result, strong discharge during obtuse wave reset discharge is suppressed.

  By the way, the unnecessary wall charges 44 may cause a problem of reducing the amount of positive charges to be accumulated on the display electrode in addition to causing a strong discharge, thereby reducing the sustain discharge and reducing the luminance. . According to the present invention, unnecessary wall charges 44 are removed, so that such a problem is solved at the same time.

It is a graph which shows the wall charge distribution after the sustain discharge by discharge simulation based on this invention. It is sectional drawing of the front side board | substrate structure of PDP of this invention for demonstrating the principle of this invention. (A) is a top view from the back side of PDP of 1st Embodiment of this invention, (b) is II sectional drawing in (a). It is sectional drawing which shows the formation process of the dielectric material layer which has an electroconductive particle content part of PDP of 1st Embodiment of this invention. (A) is a top view from the back side of PDP of 2nd Embodiment of this invention, (b) is II sectional drawing in (a). (A) is a top view from the back side of PDP of 3rd Embodiment of this invention, (b) is II sectional drawing in (a). (A) is a top view from the back side of PDP of 4th Embodiment of this invention, (b) is II sectional drawing in (a). (A) is a top view from the back side of PDP of 5th Embodiment of this invention, (b) is II sectional drawing in (a). (A) is a top view from the back side of PDP of 6th Embodiment of this invention, (b) is II sectional drawing in (a). (A) is a top view from the back side of PDP of 7th Embodiment of this invention, (b) is II sectional drawing in (a). It is a disassembled perspective view which shows the structure of the conventional PDP.

Explanation of symbols

10 ... PDP (Surface Discharge Plasma Display Panel)
11 ... Front side substrate (glass substrate)
17 ... Dielectric layer 18 ... Protective film 21 ... Back side substrate (glass substrate)
28R ... Phosphor layer (red)
28G ... Phosphor layer (green)
28B ... Phosphor layer (blue)
29 ... partition wall 29a ... part 29b of the partition wall perpendicular to the display electrode 29 ... part of the partition wall parallel to the display electrode 30 ... discharge space 41 ... transparent electrode 42 ... metal electrode 44 ... unnecessary wall charge 45 ... conducting particle containing part 47 ... Discharge slit 49 ... Non-discharge region 51 ... Grounding portion 53 ... Display electrode body 55 ... Display electrode branch A ... Address electrode X ... Display electrode Y ... Display electrode EU ... Unit light emission region EG ... 1 pixel

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. The configurations shown in the drawings and the following description are merely examples, and the scope of the present invention is not limited to those shown in the drawings and the following description.

1. First Embodiment A PDP according to a first embodiment of the present invention will be described with reference to FIGS. In this embodiment, a reflective three-electrode surface discharge type PDP will be described as an example. Fig.3 (a) is a top view from the back side of PDP of this embodiment, FIG.3 (b) is II sectional drawing in Fig.3 (a). For convenience of illustration, the phosphor layer, the address electrode, and the like included in the back side substrate structure are not shown.

  The PDP of this embodiment is arranged in plural on the front substrate 11 with a non-discharge region 49 in which the pair of display electrodes X and Y arranged with a discharge slit 47 for surface discharge is not discharged and displays. A front side substrate structure having a dielectric layer 17 covering the electrodes X and Y and a back side substrate structure having a partition wall 29 that divides a unit light emitting area adjacent to the rear side substrate 21 are arranged to face each other. In the PDP of the present embodiment, the dielectric layer 17 includes a conductive particle containing portion 45 serving as a leak path for wall charges accumulated on the surface of the dielectric layer 17 in the non-discharge region 49. The display electrodes X and Y are each composed of a strip-shaped transparent electrode 41 and a metal electrode 42 that supplements the conductivity. The partition walls 29 have a stripe shape extending in a direction perpendicular to the direction in which the display electrodes X and Y extend. The partition wall 29 is located in the uppermost layer in the plan view of FIG. 3A, but is represented by a dotted line for convenience of illustration.

  As shown in FIG. 3A, the conductive particle-containing portion 45 overlaps at least one of the display electrodes X and Y in a plan view (that is, when viewed in a plan view as shown in FIG. 3A). A portion is provided. The conductive particle containing portion 45 is preferably provided so as to reach at least one of the display electrodes X and Y from the surface of the dielectric layer 17 in the non-discharge region 49. As a result, wall charges accumulated on the surface of the dielectric layer 17 can be leaked to the display electrodes X or Y.

  By the way, the conductive particle containing part 45 is provided only in the non-discharge region 49 and its vicinity, and is not provided in the vicinity of the discharge slit 47. This is because when the conductive particle containing portion 45 exists in the vicinity of the discharge slit 47, a discharge current, which is a large current flowing between the display electrode X and the display electrode Y, passes through the conductive particle containing portion 45 and the display electrode X or Y. This is because there is a risk that the panel will be destroyed. Therefore, the conductive particle containing portion 45 is provided in a region where the local discharge current density is small, that is, the non-discharge region 49.

  The conductive particle-containing portion 45 contains impurities in the dielectric material for forming the dielectric layer 17 and conductive particles (metal such as Cr and Ni, and metal oxide such as indium oxide, tin oxide, and titanium oxide). It can be formed using a material containing a doped conductive oxide or the like.

  The size of the conductive particles is not particularly limited, but the average particle diameter (D50) of the conductive particles is preferably smaller than the thickness of the dielectric layer 17. When the average particle diameter of the conductive particles is sufficiently smaller than the thickness of the dielectric layer 17, the conductive particles can be easily dispersed uniformly in the dielectric layer 17, and the electric resistance value in the conductive particle containing portion 45. It is because it becomes easy to make uniform.

If the content of the conductive particles in the conductive particle-containing portion 45 is too small, the wall charges accumulated on the surface of the dielectric layer 17 in the non-discharge region 49 are not sufficiently removed. Since even wall charges that should not be removed may be removed, it is preferable to set a value that does not cause any of these problems.
Here, an example of preferable content of electroconductive particle is illustrated. When the conductive particles are made of metal, the content of the conductive particles in the conductive particle containing portion 45 is generally preferably 1 to 10 wt%, and more preferably about 5 wt%. This is because the resistance value becomes an appropriate value in the case of such a content.

  The size, type, and content of the conductive particles are not limited to those shown here, and may be determined experimentally so that no irregular strong discharge occurs during the blunt wave reset discharge. . An example of the experiment is as follows, for example. (1) First, conductive particles having an average particle diameter of about half of the thickness of the dielectric layer 17 are set to 0.0. A conductive particle containing portion 45 containing 1 wt% is prepared, and in this case, it is confirmed whether or not irregular strong discharge occurs during blunt wave reset discharge. (2) When an irregular strong discharge occurs, the content of the conductive particles is too small, so the content is slightly increased and it is checked again whether a strong discharge occurs. Alternatively, the size and type of the conductive particles are changed to check again whether or not a strong discharge occurs (3) By repeating this, the optimum size, type and content of the conductive particles are determined.

  Next, a method for forming the dielectric layer 17 having the conductive particle containing portion 45 will be described with reference to FIG. FIG. 4 is a cross-sectional view corresponding to FIG. 3B, showing a process for forming the dielectric layer 17 having the conductive particle containing portion 45. FIG. 4 shows only the front substrate structure.

First, as shown in FIG. 4, the display electrodes X and Y are formed on the front substrate 11, and then a binder and a solvent are added to the low melting point glass frit at the portion where the conductive particle containing portion 45 is formed. A glass paste containing conductive particles is applied by screen printing. Next, the remaining portion is coated with a glass paste obtained by adding a binder and a solvent to a low-melting glass frit and baked, whereby the dielectric layer 17 having the conductive particle containing portion 45 can be formed. The method shown here is an example, and the method of forming the dielectric layer 17 having the conductive particle containing portion 45 is not limited to the method shown here.
The conductive particle containing part 45 may be formed in a band shape or an island shape.

2. Second Embodiment A PDP according to a second embodiment of the present invention will be described with reference to FIGS. 5 (a) and 5 (b). In this embodiment, a reflective three-electrode surface discharge type PDP will be described as an example. Fig.5 (a) is a top view from the back side of PDP of this embodiment, FIG.5 (b) is II sectional drawing in Fig.5 (a). For convenience of illustration, the phosphor layer, the address electrode, and the like included in the back side substrate structure are not shown.

  This embodiment is similar to the first embodiment, but the conductive particle-containing portion 45 does not have an overlapping portion with any of the display electrodes X and Y in a plan view, and a separately provided ground portion 51. Is different in that it is grounded. In the present embodiment, wall charges accumulated on the surface of the dielectric layer 17 can be leaked to the ground portion 51.

  In the first embodiment, when the conductive particle containing portion 45 has overlapping portions with the display electrodes on both sides of the non-discharge region 49, the voltages applied to the display electrodes on both sides need to be equal (voltage In this embodiment, since the conductive particle-containing portion 45 does not have an overlapping portion with any of the display electrodes X and Y in plan view, both sides of the non-discharge region 49 are present. The voltages applied to the display electrodes need not be the same. In this embodiment, the voltage applied to the display electrodes on both sides of the non-discharge region 49 may be the same.

3. Third Embodiment A PDP according to a third embodiment of the present invention will be described with reference to FIGS. 6 (a) and 6 (b). In this embodiment, a reflective three-electrode surface discharge type PDP will be described as an example. Fig.6 (a) is a top view from the back side of PDP of this embodiment, FIG.6 (b) is II sectional drawing in Fig.6 (a). For convenience of illustration, the phosphor layer, the address electrode, and the like included in the back side substrate structure are not shown.

  The present embodiment is similar to the first embodiment, but the display electrodes X and Y each have a main body 53 extending in one direction and a branch 55 extending from the main body 53 toward the non-discharge region 49. And the conductive particle-containing portion 45 is different from the main portion 53 in a plan view, and is provided so as to have an overlapping portion with the branch portion 55.

  As in the first embodiment, when the conductive particle-containing portion 45 has an overlapping portion with the main body portion 53 of the display electrode X or Y in plan view, the discharge generated in the discharge slit 47 is not discharged. In the present embodiment, the conductive particle-containing portion 45 may move to the vicinity of the region and cause a DC type abnormal discharge. In the present embodiment, the main body portion 53 of the display electrodes X and Y in the plan view. Since both do not have an overlapping portion, the occurrence of DC type abnormal discharge can be suppressed.

  Further, since the conductive particle containing portion 45 has a portion overlapping the branch portion 55 in plan view, the wall charges accumulated on the surface of the dielectric layer 17 are transmitted through the branch portion 55 to the display electrode X or Y. Can leak.

4). Fourth Embodiment A PDP according to a fourth embodiment of the present invention will be described with reference to FIGS. 7 (a) and (b). In this embodiment, a reflective three-electrode surface discharge type PDP will be described as an example. Fig.7 (a) is a top view from the back side of PDP of this embodiment, FIG.7 (b) is II sectional drawing in Fig.7 (a). For convenience of illustration, the phosphor layer, the address electrode, and the like included in the back side substrate structure are not shown.

  This embodiment is similar to the third embodiment except that the branch part 55 of the display electrode X or Y is provided so as to overlap with the partition wall 29 in plan view.

  Since the discharge generated in the discharge slit 47 does not proceed in the vicinity of the partition wall 29, by providing the branch portion 55 of the display electrode X or Y so as to overlap with the partition wall 29 in plan view, a DC type abnormal discharge Can be further suppressed.

5). Fifth Embodiment A PDP according to a fifth embodiment of the present invention will be described with reference to FIGS. 8 (a) and 8 (b). In this embodiment, a reflective three-electrode surface discharge type PDP will be described as an example. Fig.8 (a) is a top view from the back side of PDP of this embodiment, FIG.8 (b) is II sectional drawing in Fig.8 (a). For convenience of illustration, the phosphor layer, the address electrode, and the like included in the back side substrate structure are not shown.

  This embodiment is similar to the fourth embodiment, but the partition wall 29 has a lattice (also referred to as a box or waffle) shape, and a portion (vertical portion) extending in a direction perpendicular to the direction in which the display electrodes X and Y extend. 29a and a portion (parallel portion) 29b extending in parallel with the direction in which the display electrodes X and Y extend. The parallel portion 29b is disposed so as to have an overlapping portion with the non-discharge region 49 in plan view.

  Since the discharge generated in the discharge slit 47 does not proceed in the vicinity of the partition wall 29, the discharge slit 47 generates the parallel portion 29 b of the partition wall 29 so as to overlap the non-discharge region 49 in plan view. It is possible to prevent the discharge from proceeding to the vicinity of the conductive particle containing portion 45 in the non-discharge region 49, thereby suppressing the occurrence of DC type abnormal discharge.

6). Sixth Embodiment A PDP according to a sixth embodiment of the present invention will be described with reference to FIGS. 9 (a) and 9 (b). In this embodiment, a reflective three-electrode surface discharge type PDP will be described as an example. Fig.9 (a) is a top view from the back side of PDP of this embodiment, FIG.9 (b) is II sectional drawing in Fig.9 (a). For convenience of illustration, the phosphor layer, the address electrode, and the like included in the back side substrate structure are not shown.

  This embodiment is similar to the fifth embodiment, but the transparent electrodes 41 of two display electrodes adjacent to each other with the non-discharge region 49 interposed therebetween are connected, and the two display electrodes are a common metal electrode 42. Is different.

  Also in this embodiment, since the parallel portion 29b of the partition wall 29 is provided so as to have an overlapping portion with the non-discharge region 49 in plan view, the discharge generated in the discharge slit 47 contains conductive particles in the non-discharge region 49. The occurrence of DC abnormal discharge is suppressed without proceeding to the vicinity of the portion 45. In addition, the width | variety of the area | region where the discharge which arose in the discharge slit 47 does not advance near the parallel part 29b of the partition 29 is about 5-30 micrometers, for example.

7). Seventh Embodiment A PDP according to a seventh embodiment of the present invention will be described with reference to FIGS. 10 (a) and 10 (b). In this embodiment, a reflective three-electrode surface discharge type PDP will be described as an example. Fig.10 (a) is a top view from the back side of PDP of this embodiment, FIG.10 (b) is II sectional drawing in Fig.10 (a). For convenience of illustration, the phosphor layer, the address electrode, and the like included in the back side substrate structure are not shown.

  This embodiment is similar to the sixth embodiment, but (1) the display electrode X or Y has a metal electrode 42 extending in parallel to the discharge slit 47 and a branch shape from the metal electrode 42 toward the discharge slit 47. (2) The conductive particle-containing portion 45 has an overlapping portion with the metal electrode 42 and does not have an overlapping portion with the transparent electrode 41 in plan view. The difference is that the islands are formed.

  In the present embodiment, the conductive particle containing portion 45 is not formed in a portion overlapping the transparent electrode 41 through which the discharge current substantially flows in plan view, and overlaps with the metal electrode 42 in which the discharge current does not flow substantially in plan view. By forming the conductive particle containing portion 45 in the portion, it is possible to efficiently remove unnecessary wall charges while suppressing the occurrence of abnormal discharge.

  Various features shown in the above embodiments can be combined with each other. In the case where a plurality of features are included in one embodiment, one or a plurality of features can be appropriately extracted and used alone or in combination in the present invention.

Claims (7)

A front-side substrate assembly having a plurality of display electrode pairs arranged on a front-side substrate with a discharge slit for surface discharge being provided with a non-discharge region where no discharge occurs, and having a dielectric layer covering the display electrode And a back side substrate structure having a partition wall that partitions adjacent unit light emitting regions on the back side substrate, and a plasma display panel,
The plasma display panel, wherein the dielectric layer includes a conductive particle-containing portion in the dielectric layer in the non-discharge region. The plasma display panel according to claim 1, wherein the conductive particle-containing portion of the dielectric layer is provided so as to overlap with at least one of the display electrodes in a plan view. The plasma display panel according to claim 1, wherein the conductive particle-containing portion of the dielectric layer is grounded in a separately provided ground portion. The display electrode has a main body portion extending in one direction, and a branch portion extending from the main body portion toward the non-discharge region,
2. The plasma display panel according to claim 1, wherein the conductive particle-containing portion of the dielectric layer is provided so as not to have an overlapping portion with the main body portion in a plan view and to have an overlapping portion with the branch portion. The plasma display panel according to claim 4, wherein the branch portion is provided at a position having an overlapping portion with the partition in a plan view. The display electrode has a metal electrode extending in parallel with the discharge slit, and a transparent electrode extending in a branch shape from the metal electrode toward the discharge slit,
The conductive particle containing part of the dielectric layer is formed in an island shape so as to have an overlapping part with the metal electrode and not to have an overlapping part with the transparent electrode in a plan view. Plasma display panel. The plasma display according to any one of claims 1 to 6, wherein a voltage increasing or decreasing with the passage of time is applied between the display electrodes that generate the surface discharge to generate a reset discharge between the display electrodes. panel.

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