JP2003282011A - Gas discharge panel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a gas discharge panel capable of carrying out a superior discharge efficiency while, in the gas discharge panel of a PDP or the like, suppressing power consumption in driving. <P>SOLUTION: On a front panel glass 21, each of a pair of display electrodes 22, 23 (X electrode 22, Y electrode 23) is formed as a fork-type having a plurality of electrode branches X<SB>1</SB>, X<SB>2</SB>or Y<SB>1</SB>, Y<SB>2</SB>, and Y<SB>3</SB>. Then, a gap between Y<SB>1</SB>and X<SB>2</SB>(X<SB>2</SB>and Y<SB>2</SB>) is made to have about 20 μm of a first discharge gap 39, and a gap between Y<SB>1</SB>and X<SB>1</SB>(X<SB>2</SB>and Y<SB>3</SB>) is made to have about 40 μm of a second discharge gap, and when starting the discharge, the discharge is carried out at the first discharge gap 39, and when maintaining the discharge, the discharge is carried out at the second discharge gap 40, respectively. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas discharge panel used for a display device, etc.
Regarding DP.

[0002]

2. Description of the Related Art In recent years, expectations for high-definition and large-screen display devices typified by high-definition television have increased, and CRTs, liquid crystal displays (hereinafter referred to as LCDs), and plasma display panels (Plasma Display P
Research and development have been made on each display device such as anel (hereinafter referred to as PDP). Each such display device has the following features.

CRTs are excellent in resolution and image quality, and have been widely used in televisions and the like from the past. However, as the screen size increases, the size and weight of the depth tend to increase, and the point is how to solve this problem. For this reason, it is considered difficult to make a CRT with a large screen that exceeds 40 inches. On the other hand, LCD
Has excellent performance of less power consumption, smaller size and lighter weight than CRT, and is now widely used as a computer monitor. But L
Since the CD cannot emit light by itself and display it on the screen, the display becomes thin and difficult to see if the screen is enlarged.
Technical problems such as gradation levels and color tones are easily disturbed at the top and bottom of the screen are likely to occur. Furthermore, it is considered necessary to positively solve the drawback that the viewing angle peculiar to the LCD is narrow when the screen is enlarged.

On the other hand, the PDP is a CRT as described above.
Unlike LCDs and LCDs, it is relatively lightweight and advantageous in achieving a large screen, and has the advantage of low power consumption while being a drive system that emits light by itself to display a screen. Therefore, in the present demand for next-generation display devices, research and development for increasing the screen size of gas discharge panels such as PDPs are being actively pursued, and products exceeding 50 inches are already being developed. Has arrived.

Such a PDP is classified into a DC (direct current) type and an AC (alternating current) type due to the difference in driving method. Of these, the AC type is considered to be suitable for increasing the screen size, and this is becoming common.

[0006]

By the way, in the present day when it is desired to develop electric products for various purposes with the power consumption suppressed as much as possible, it is expected to reduce the power consumption during driving even in a gas discharge panel such as PDP. It is sent. In particular, gas discharge panels such as PDPs, whose power consumption tends to increase due to recent trends toward larger screens and higher definition, cannot neglect measures against this power consumption. In order to meet this demand, it is necessary to improve the discharge efficiency that largely affects the performance of the PDP.

It is said that there is still a lot of room for improvement in the technical problem of suppressing the power consumption by improving the discharge efficiency in the gas discharge panel such as PDP.

[0008]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and provides a PDP having a high-performance display function by ensuring excellent discharge efficiency while appropriately suppressing power consumption. An object is to provide a gas discharge panel. The above-mentioned object is that a plurality of cells filled with a discharge gas are arranged in a matrix between a pair of plates provided so as to face each other, and a pair of display electrodes are provided in a plurality of cells on the opposite surfaces of the plate. In a gas discharge panel that is arranged to extend in the row direction in a straddling state, two types of discharges, a first discharge gap and a second discharge gap wider than the first discharge gap, are provided between the pair of display electrodes. It can be realized by having a gap.

More specifically, when the discharge gas pressure is P and the discharge gap is d, the first discharge gap has a minimum discharge start voltage in the Paschen curve showing the relationship between the Pd product and the start discharge voltage. Alternatively, the second discharge gap includes a gap corresponding to the maximum discharge efficiency in the discharge efficiency curve showing the relationship between the Pd product and the discharge efficiency. realizable.

With this configuration, when power is supplied to the display electrodes, discharge is started in the first discharge gap at a voltage value lower than that in the related art, and the luminous efficiency of the PDP is improved. Further, after the discharge is started, the sustain discharge is efficiently performed in the second discharge gap, and good display is possible. In the gas discharge panel as described above, specifically, one display electrode is branched into first and second electrode limbs, the other display electrode is inserted between the electrode limbs, and the first electrode limb is inserted. And a gap between the other display electrode is the first discharge gap, and the gap between the second electrode limb and the other display electrode is the second discharge gap, or a pair of display electrodes Both are branched into electrode limbs, the electrode limbs of the other display electrode are inserted between the first and second electrode limbs of one display electrode, and the first electrode limb of one display electrode and the other display electrode The gap between the electrode limb of No. 1 is the first discharge gap, and the gap between the second limb of one display electrode and the electrode limb of the other display electrode is the second discharge gap. realizable. In this case, in addition to the above effect, it becomes possible to perform good address discharge while preventing crosstalk.

Further, according to the present invention, the gap between the pair of display electrodes has a plurality of gap values in a direction perpendicular to the plane of the gas discharge panel, and the first discharge gap and the second discharge gap are included in the plurality of gap values. It can be realized by using a gas discharge panel including gap values corresponding to the discharge gaps. This makes it easy to provide the first and second discharge gaps in the limited space, which is advantageous when manufacturing a high-definition cell.

Further, according to the present invention, in at least one display electrode of the pair of display electrodes, one or more protrusions are formed for each cell at an electrode edge portion facing the other display electrode. There is a gap corresponding to the first discharge gap between the display electrode and the other display electrode, and a gap corresponding to the second discharge gap is provided between the other display electrode and a portion other than the portion where the protrusion is formed. This can be achieved by using the existing gas discharge panel.

In this way, the present invention can be realized by making a slight improvement after manufacturing the display electrode as in the conventional case, and an excellent effect can be obtained in terms of manufacturing cost.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION <First Preferred Embodiment> FIG. 1 is a partial sectional perspective view of an AC surface discharge type PDP according to a first preferred embodiment. In the figure, the z direction is the thickness direction of the PDP and the xy plane is the PD.
It corresponds to a plane parallel to the P plane. As shown in this figure, this PDP
The configuration of is roughly divided into two units, a front panel 20 and a back panel 26.

The front panel glass 21, which is the substrate of the front panel 20, is made of soda lime glass. And
On the surface of the front panel glass 21 facing the back panel 26, a pair of fork-type display electrodes 22, 23 (X electrodes 22, Y) having electrode limbs X1, X2 or Y1, Y2, Y3, respectively.
The electrodes 23) are extended in the x-direction and are alternately arranged at regular intervals in the y-direction so that each electrode limb is a combination of Y1, X1, Y2, X2 and Y3. Here, in common with each embodiment, it is assumed that the X electrode 22 operates as a scan electrode during address discharge. An overall view of the display electrodes 22 and 23 will be shown later.

A dielectric layer 24 made of lead oxide type glass is coated on the surface of the front panel glass 20 on which the display electrodes 22 and 23 are arranged. This allows the display electrode
22 and 23 are embedded in the dielectric layer 24.
On the surface of the dielectric layer 24, magnesium oxide (M
A protective layer 25 of gO) is coated. The back panel glass 27, which is the substrate of the back panel 26, is also manufactured in the same manner as the front panel glass 21, and a plurality of address electrodes are provided on the surface facing the front panel 20.
28 are arranged so as to extend in the y direction, and form a grid-shaped electrode arrangement pattern with the display electrodes 22 and 23 of the front panel 20 with a constant interval in the z direction. On the surface of the back panel glass 27 on which the address electrodes 28 are provided, a dielectric film 29 made of the same material as the dielectric layer 24 is formed so as to surround the address electrodes 28, and further on the surface of the dielectric film 29. A plurality of partition walls 30 having a constant height and a certain thickness are formed along the y direction in accordance with the interval between two adjacent address electrodes 28. On the side surface of the partition wall 30 and the surface of the dielectric film 29, any one of the phosphor layers 31, 32, and 33 matching each color of RGB is applied.

The protective layer 25 on the front panel 20 side and the top of the partition wall 30 on the back panel 26 side are bonded to each other with sealing glass. Then, a discharge gas containing a rare gas is filled in each space partitioned by the plurality of partition walls 30, and each space becomes a strip-shaped discharge space 38 long in the y direction. This discharge space 38
, A pair of display electrodes 22 and 23 (here, electrode limb X
1, X2, Y1, Y2, Y3) and one address electrode 28, each of which includes an area where each of the intersections is a cell 11, 12, 13, 14 (described later) for screen display. The cell 11,
.. are formed so as to be arranged in a matrix with the x direction as the row direction and the y direction as the column direction. Therefore, in this PDP, it is possible to display the matrix by blinking each cell 11 ,. It has become.

During driving, two kinds of discharge are performed by appropriately supplying power to the electrodes 22, 23 and 28. One is cell 1
Address discharge for controlling ON / OFF of lighting of 1, ... Is performed by supplying power between either the X electrode 22 or the Y electrode 23 and the address electrode 28. The other is a sustain discharge (surface discharge) that directly contributes to the screen display of the PDP and is performed by supplying power between the X electrode 22 and the Y electrode 23.

FIG. 2 shows the display electrode pattern of this PDP in z.
It is a top view at the time of looking down from a direction. Here, the partition wall 30 is not shown in order to avoid complication of the drawing. Each of the areas separated by a broken line in the discharge space 38 is a cell 11, 1
Equivalent to 2, 13, and 14. Corresponding to cell 11 (cell 12), which is one of such cells, Y1, X1, Y2, X2, Y3
The width of each electrode limb provided in the order of (Y'1, X'1, Y'2, X'2, Y'3) is set to a size of about 20 μm, and between the adjacent electrode limbs. , The discharge gap is set to take one of the following two values.

That is, one of these two values is X
It is the gap value of the first discharge gap 39 existing in the gap between 1 and Y2 and Y2 and X2 (Y'1 and X'1, Y'2 and X'2), and is about 20 μm.
Is set to. The first discharge gap 39 is set for the purpose of suppressing the discharge start voltage to be lower than in the conventional case. Already
One value is Y1 and X1, X2 and Y3 (Y'1 and X'1, X'2
And Y'3), the gap value of the second discharge gap 40 existing in the gap between Y and Y'3) is set to about 40 μm. This second discharge gap 40
Is set as a gap for ensuring high luminous efficiency after the start of discharge. The reason why the gap values of the first discharge gap 39 and the second discharge gap 40 are selected in this way will be described later.

Two cells 11 and 12 adjacent to each other in the y direction
Gap 35 of (cells 13 and 14), that is, Y electrode limbs Y3 and Y'1
The gap is set to about 120 μm. According to the present PDP having the above structure, the display electrode 2 is
Power is supplied to 2 and 23, and a pulse is applied. At this time, surface discharge (starting discharge) is started in the first discharge gap 39. However, since the first discharge gap 39 is relatively narrow, about 20 μm, the discharge start voltage becomes a value lower than in the conventional case. By this, PD
Power consumption at the time of starting discharge of P is effectively suppressed.

When the start discharge is started, the discharge is performed not only in the first discharge gap 39 but also in the second discharge gap 40, and sufficient sustaining discharge provides good luminous efficiency. As described above, the PDP of the present embodiment uses each discharge gap existing between the plurality of electrode limbs X1, ... In response to the start discharge and the sustain discharge. In addition, the dielectric layer 24
In the inside, for example, corresponding to the cell 11, the Y electrode limb Y1,
Since one more Y2 and Y3 are arranged than the X electrode limbs X1 and X2, the risk that the X electrode limb X2 and the like will crosstalk with the Y electrode limb Y1 'and the like of the adjacent cell 12 is suppressed. It As a result, the X electrode 22 that also functions as a scanning electrode
Are protected by the Y electrode 23.

Such a PDP is manufactured as follows. (Production Method of PDP of First Embodiment) i. Production of Front Panel 20 On the surface of a front panel glass 21 made of soda lime glass having a thickness of about 2 mm, a conductor material containing silver as a main component is used. The display electrodes 22, 23 having the electrode limbs X1, X2 or Y1, Y2, Y3 in a fork shape are prepared. For the display electrodes 22 and 23, known manufacturing methods such as a screen printing method and a photo etching method can be applied.

Next, a lead-based glass paste having a thickness of about 20 to 30 μm is applied to the front panel glass on the display electrodes 22 and 23.
The entire surface of 21 is coated and baked to form a dielectric layer 24. Next, a protective layer 25 made of magnesium oxide (MgO) having a thickness of about 1 μm is formed on the surface of the dielectric layer 24 by a vapor deposition method or a CVD (chemical vapor deposition) method.

With this, the front panel 20 is completed. ii. Production of back panel 26 On the surface of a back panel glass 27 made of soda lime glass having a thickness of about 2 mm, a conductive material containing silver as a main component is applied in a stripe shape at regular intervals by a screen printing method, An address electrode 28 having a thickness of about 5 μm is formed. Here, since the PDP to be manufactured is a high-definition television of a 40-inch class, the interval between two adjacent address electrodes 28 is set to about 0.2 mm or less.

Subsequently, a lead-based glass paste is applied to the entire surface of the back panel glass 27 on which the address electrodes 28 are formed in a thickness of about 20 to 30 μm and baked to form a dielectric film 29. Next, using the same lead-based glass material as the dielectric film 29, two adjacent address electrodes 2 are formed on the dielectric film 29.
The partition walls 30 having a height of about 100 μm are formed every eight intervals. The partition wall 30 can be formed, for example, by repeatedly screen-printing a paste containing the above glass material and then firing it.

After the partition wall 30 is formed, the wall surface of the partition wall 30 and
On the surface of the dielectric film 29 exposed between the partition walls, red (R)
A fluorescent ink containing any of a fluorescent substance, a green (G) fluorescent substance, and a blue (B) fluorescent substance is applied, and this is dried and baked to form fluorescent substance layers 31, 32, and 33, respectively. Here, examples of phosphor materials generally used for PDPs are listed below.

Red phosphor; (Y _x Gd _{1 -x} ) BO ₃ : E
u ³⁺ green phosphor; Zn ₂ SiO ₄ : Mn blue phosphor; BaMgAl ₁₀ O ₁₇ : Eu ³⁺ (or B
aMgAl ₁₄ O ₂₃ : Eu ³⁺ ) With the above, the back panel 26 is completed.

The front panel glass 21 and the back panel glass 27 are made of soda lime glass, which is an example of the material,
Other materials may be used. Further, the dielectric layer 24 and the protective layer 25 are not limited to the above materials, and may be appropriately changed. Similarly, for the display electrodes 22 and 23, it is possible to select a material so as to be a transparent electrode having good transparency, for example. Such selection of each material may be similarly performed in each embodiment as far as possible.

Iii. Completion of PDP The fabricated front panel 20 and back panel 26 are attached to each other using sealing glass. After that, the inside of the discharge space is degassed to a high vacuum (8 × 10 ⁻⁷ Torr), and a discharge gas composed of Ne—Xe (5%) is filled at a predetermined pressure (here, 2000 Torr). To complete the PDP.

Regarding the discharge gas, in addition to this, He
-Xe system or He-Ne-Xe system can be used. Further, the manufacturing method of this PDP is generally the same except for the shape and structure of the display electrode formed for each PDP of each embodiment. Therefore, with regard to the method of manufacturing the PDP in each of the subsequent embodiments, the features relating to the display electrodes will be mainly described.

In the present embodiment, the Y electrode limb is (n +
1) As an example of a combination of a book and n X electrode limbs, cell 11,
... shows an example in which three Y electrode limbs and two X electrode limbs are provided so as to correspond, but n is an arbitrary natural number, for example, two Y electrode limbs and an X electrode limb are provided. It may be a combination of one. Further, the present invention is not limited to this, and the first and second discharge gaps can be ensured for each one cell 11, ... And an electrode that does not cause crosstalk between the cell 11 and the adjacent cell 12. Any combination of limbs will do. To this end, the X electrodes and the Y electrodes corresponding to one of the cells 11 ...
It may be desirable to have different numbers of electrodes.

In the embodiment, the cells adjacent in the y direction
The gap 35 between 11 and 12 was set to about 120 μm, but the electrode limb was placed in the cell 1
You may make it increase toward the boundary of 1 and 12 and improve luminous efficiency by this. In this case cells 11, 12
If the electrode limbs having different polarities are adjacent to each other and crosstalk does not occur, for example, the gap 35 between the cells 11 and 12 may be eliminated.

Furthermore, in the present embodiment, an example in which the widths of the X electrode limb and the Y electrode limb are similarly made is shown.
In order to make the electrode limb function well as a scanning electrode, the X
The electrode limbs may be formed to have a width about 1.5 to 3 times wider than that of the Y electrode limbs so that the electrostatic capacity for address discharge can be sufficiently secured. AC surface discharge type PDP
In general, in the discharge period, power is usually supplied by applying several to several tens of pulses to the display electrode. However, in the present embodiment, the electrode limb Y2 or Y'2 of the Y electrode 23 is further added.
To the other electrode limb Y1, Y3 or Y'1, Y'3 independent wiring, and to the electrode limb (Y2 or Y'2 here) directly involved in the start discharge, for example, the first few pulses of the discharge period. Electrode limbs (here, Y1, Y3 or Y'1, Y'3) that are supplied with electricity only and sustain discharge after that
You may make it power-supply only to. By doing so, discharge is generated in the first discharge gap only at the beginning of the discharge period when there are few charged particles in the discharge space (there are few priming charged particles), and after that, discharge is no longer generated in the first discharge gap. Efficiency is improved.

As a measure for further improving the light emission luminance, for example, as shown in the plan view of the display electrode arrangement pattern of FIG. 3, the widths of the Y electrode limbs Y3 and Y'1 are set near the boundaries of the cells 11 and 12. If the discharge area of the electrode limbs Y3 and Y'1 is widened to a maximum value, the sustain discharge having a larger scale can be obtained. In this case, if a black layer made of a metal material such as black aluminum or black zinc is formed on the surface of the Y electrode limb Y3, Y'1 on the side of the front panel glass 20, the display electrodes 22, 23 are exposed to external light. Is prevented from appearing white on the screen, and the contrast at the time of driving the PDP is improved.
Note that such a black layer can also be applied to the display electrodes of PDPs of other embodiments.

<Second Embodiment> FIG. 4 is a partial sectional perspective view of an AC surface discharge type PDP according to a second embodiment.
This PDP has almost the same structure as the PDP of the first embodiment as a whole, but the display electrodes 22 and 23 have a structure in which the display electrodes 22 and 23 are laminated in the thickness direction (z direction) of the PDP instead of having the electrode limbs. Have

That is, the PD around the display electrode shown in FIG.
As shown in the P cross-sectional view, the X electrode 22 and the Y electrode 23 have the first layer 221, 231, and the second layer 222, 232 respectively along the z direction.
It has a two-stage structure consisting of. Second layer 222, 232
Has a width narrower than that of the first layers 221, 231 so that a discharge gap having a plurality of gap values is secured between the display electrodes 22, 23. That is, in the present embodiment, the Y electrode first layer
A first discharge gap 43 exists between the 231 and the X electrode first layer 221, and a second discharge gap 44 exists between the Y electrode second layer 232 and the X electrode second layer 222.

The specific size of each display electrode 22, 23 is such that the first layers 221 and 231 have a width of about 40 to 80 μm and a thickness of about 300 nm or less, while the second layers 222 and 232 have a width of about 20 μm. About thickness
It is set to 500 nm to 5000 nm (5 μm). In the figure, the first discharge gap 43 and the second discharge gap 44 are set to about 20 μm and about 40 μm, respectively, as in the first embodiment.
Such display electrodes 22 and 23 can be formed by repeating the screen printing method for each layer a plurality of times and then firing the layers.

According to the present PDP having the above-mentioned structure, when power is supplied to the display electrodes 22 and 23 during the discharge period and a pulse is applied, first the start discharge is performed in the first discharge gap 43 by the discharge start voltage. Then, the sustain discharge is performed in the second discharge gap 44 by the sustain voltage. In this PDP, the same effect as that of the first embodiment can be obtained by the respective voltage values, but in the present embodiment, the first discharge gap 43 and the second discharge gap 43 are formed between the pair of display electrodes 22 and 23. gap
Since 44 is present, the space for allowing the gaps 43 and 44 to be present can be relatively suppressed, and it is easy to realize even a fine cell.

In the present embodiment, the second layers 222 and 232 are made wider than the first layers 221, 231. However, the first layer and the second layer are made to have the same width so that the mutual layers are constant. The first discharge gap and the second discharge gap may be present by laminating the layers by shifting the amounts. Further, the display electrode is not limited to such a two-stage structure, and a plurality of discharge gaps including a first discharge gap and a second discharge gap exist in the z direction between the pair of display electrodes 22 and 23. As shown in the PDP sectional view around the display electrode in FIG.
The electrode 22 has a simple single layer structure, and only the Y electrode 23 is the first layer 23.
The first discharge gap 45 and the second discharge gap 46 may be present between the X electrode 22 and the Y electrode 23 by forming a laminated structure including the 3 and the second layer 234.

As shown in the PDP sectional view around the display electrode in FIG. 7, for example, the first layer 221 and the second layer 222 of the X electrode 22 may be separated in the z direction. By doing so, the second layer 234 of the Y electrode 23 and the second layer 222 of the X electrode 22 are formed by the dielectric layer 24 between them.
Serve as display electrodes sandwiching the second discharge gap 48. In this case, the capacitance around the X electrode 22 increases, so X
The electrode 22 can be operated well. One first discharge gap 47 is secured between the first layers 221 and 233.

Further, the display electrodes 22 and 23 are not limited to the above-described two-stage structure, and the X electrode 22 and the Y electrode 23 have slopes 223, 224 or 235 as shown in the PDP sectional view around the display electrode in FIG. , 236 in a triangular cross-section, the shortest gap between the opposing slopes 223, 235 is matched with the first discharge gap 49, and the apex of the X electrode 22, Y electrode 23 is a second discharge gap. You may make it match 50. By doing so, a large number of discharge gaps other than the first discharge gap 49 for the sustain discharge can exist, and the discharge efficiency is improved. Such a display electrode can also be formed by repeating screen printing a number of times for stacking and firing.

Further, as shown in the sectional view of the PDP of FIG. 9, the opposing slopes 223 and 235 may be curved surfaces 225 and 237, respectively. This ensures the first discharge gap 53, while
Since the value of the discharge gap associated with the sustain discharge equal to or less than the second discharge gap 52 increases, it becomes possible to more effectively perform the start discharge and the sustain discharge. If it is difficult to manufacture the display electrodes 22 and 23 having the triangular cross section as described above, for example, P of FIG.
As shown in the DP cross-sectional view, first, ordinary display electrodes 22 and 23 having a rectangular cross-section are produced, and then a part of the corners of the display electrodes 22 and 23 is cut to form cut surfaces 227 and 2
39 should be provided respectively. In this case, the cut amount is set so that the shortest gap between the cut surfaces 227 and 239 and the gap between the facing surfaces 226 and 238 become the first discharge gap 53, and the longest gap between the cut surfaces 227 and 239 becomes the second discharge gap 54. adjust. The cut surfaces 227 and 239 can be formed by forming the X electrode 22 and the Y electrode 23 once and then chamfering them by a known over-etching process.

<Third Embodiment> In the second embodiment, an example in which a gap having a plurality of gap values is secured in the thickness direction (z direction) of the PDP panel is shown for the pair of display electrodes. In the embodiment, a plurality of discharge gaps having a gap value including a first discharge gap and a second discharge gap are provided along the front panel 20 plane (xy plane) between the pair of display electrodes.

Specifically, as shown in FIG. 11 which is a partial perspective view of the AC surface discharge type PDP according to the third embodiment, a pair of X electrode 22 and Y electrode 23 (each having a width of about 20 μm) is single. Manufactured to have a single layer structure. This display electrode 22,
As shown in FIG. 12 which is a plan view showing the arrangement pattern of the display electrodes, triangular protrusions 228 and 240 (height about 10 μm) face each other in the regions corresponding to the insides of the cells 11 and 13, respectively. It is equipped with. A first discharge gap 55 is secured between the tips of the protrusions 228, 240, and a second discharge gap 56 is secured between the display electrodes 22, 23 other than the protrusions 228, 240. It should be noted that the sizes of the protrusions 228 and 240 are shown larger than the display electrodes 22 and 23 for the sake of clarity in the drawing.

According to the present PDP having the above-mentioned structure, when power is supplied to the display electrodes 22 and 23 and a pulse is applied during the discharge period, first the start discharge by the discharge start voltage is generated in the first discharge gap 55. Occur. By providing the display electrodes 22 and 23 with the protrusions 228 and 240, the amount of electricity is concentrated at the tips of the display electrodes 22 and 23, so that the discharge start voltage is effectively reduced and the start discharge is positively generated. In addition, the first discharge gap 55 is
Since they exist in the gap between the tips of 228 and 240, the discharge gap other than this is utilized for the sustain discharge, and the sustain discharge of a good scale is performed in the discharge gap including the second discharge gap 56.

Further, in particular, this embodiment has an advantage that the display electrodes having the protrusions 228 and 240 can be patterned at once by the screen printing method, for example, and can be easily manufactured. This is advantageous in reducing manufacturing costs. In the present embodiment, an example is shown in which the tips of the protrusions 228 and 240 are opposed to each other between the pair of display electrodes 22 and 23, but in addition to this, as in the plan view of the PDP electrode pattern of FIG. The protrusion 229 is provided only on one of the pair of display electrodes 22 and 23 (only the X electrode 22 in the figure), and the protrusion 229 is formed.
A first discharge gap 57 may be present between the tip of the display electrode and the display electrode (Y electrode 23 in the figure), and a second discharge gap 58 may be present between the display electrodes 22 and 23.

Furthermore, the shape of the protrusion is not limited to the triangular shape. For example, as shown in FIG. 14, protrusions 241 and 260 having parabolic outer edges may be formed, and thereby the first discharge gap 59 and the second discharge gap 60 may be obtained. Further, in the present embodiment, an example in which the tips of the protrusions are aligned with the positions where the display electrodes 22 and 23 face each other has been shown, but the positions of the tips of the two protrusions are slightly shifted from each other so that the height of the protrusions is The shortest gap between both protrusions may be set as the first discharge gap by making it longer than half of the two discharge gaps (that is, by making twice the height of the protrusions longer than the second discharge gap).

Further, the number of protrusions may be appropriately increased according to the size of the cell, or the shape of a specific protrusion may be changed. <Embodiment 4> This PDP has almost the same structure as that shown in the sectional perspective view of FIG. 11, but as shown in the plan view of the electrode pattern of the PDP of FIG. X electrodes 22 and Y electrodes 23, which are display electrodes, are arranged in parallel with each other and face each other.
It is characterized in that an intermediate electrode 61 made of an electrically insulated conductor material having a size that can be accommodated in each of the insides of 11 and 13 is arranged.

FIG. 16 is a sectional view of the present PDP. The display electrodes 22 and 23 are formed to have a thickness of about 5 μm × width of about 20 μm, and the intermediate electrode 61 is approximately 5 μm in thickness (z direction) × about 20 μm in width (y direction) × long at approximately the center between the display electrodes 22 and 23. Sa (x
(Direction) It is formed in a rectangular parallelepiped shape of about 20 μm. Accordingly, in the present embodiment, the gap 62 between the intermediate electrode 61 and the Y electrode 23 is
Sum of gap 622 between 1 and X electrode 22 and intermediate electrode 61 (10 μm + 10
μm) as the first discharge gap 62, and the space between the pair of display electrodes 22, 23 as the second discharge gap (about 40 μm) 63. The bottom surface 611 of the intermediate electrode 61 facing the front panel glass 20 has display electrodes 22, 2 facing each other with the intermediate electrode 61.
Display electrodes 22, 2 so that the discharge gap between them is not blocked.
The heights of the upper surfaces 221 and 231 of 3 are set to be almost the same. The intermediate electrode 61 as described above can be manufactured by a screen printing method in the same manner as the display electrodes 22 and 23.

According to the present PDP having the above-described structure, when the display electrodes 22 and 23 are supplied with electric power during the discharge period and a pulse is applied, the X electrode 22 and the Y electrode 23 pass through the dielectric layer 24. As a result, the capacitance near the position facing the intermediate electrode 69 becomes relatively large, and discharge easily occurs in the first discharge gap 62 even at a low starting voltage value. When the start discharge is generated in this manner, the sustain discharge is then generated in the second discharge gap 63.
At this time, since the discharge is performed over the wide opposing regions of the display electrodes 22 and 23, it is possible to perform the sustain discharge on a good scale, which contributes to the improvement of the luminous efficiency of the PDP.

In the present embodiment, the bottom surface of the intermediate electrode 61
The position of 611 is aligned with the height position of the upper surfaces 261 and 242 of the display electrodes 22 and 23. This is to prevent the second discharge gap 63 from being blocked by the intermediate electrode 61. As shown in the cross-sectional view of the PDP in FIG. 17, it suffices if the thickness of the intermediate electrode 61 is made sufficiently thinner than the display electrodes 22 and 23 so that the second discharge gap 63 can be secured.

Regarding the setting of the first discharge gap, the intermediate electrode may be arranged substantially in the center between the pair of display electrodes.
Care should be taken because there is a risk that the firing voltage will rise. Further, the shape of the intermediate electrode is not limited to the rectangular parallelepiped as in the present embodiment, and may be, for example, an ellipsoid, and the major axis direction thereof may be arranged parallel to the x direction.

Further, the size range of the intermediate electrode is not limited to the size of the embodiment, but a size that can be separated from the vicinity of the partition 30 to some extent is desirable in order to avoid crosstalk with cells adjacent in the x direction. . <Fifth Embodiment> FIG. 18 is a sectional view of a PDP around a display electrode according to a fifth embodiment.

The structure of the display electrode of this PDP and the shape of its arrangement pattern are basically the same as the two-step structure according to the second embodiment, but the first layer of the display electrode is the second layer. The difference is that it is made of a material having a high resistance value. As a result, the discharge in the first discharge gap is less likely to contribute to the sustain discharge after the start discharge, so that the discharge efficiency can be further improved. Details are as described below.

In general, a gas discharge panel such as a PDP is driven by alternately repeating charging and discharging for display electrodes at regular intervals. The time required to charge or discharge the load capacity of the gas discharge panel varies somewhat depending on the load capacity of the gas discharge panel and its drive circuit, but is generally several tens n.
It is 1 μSec from Sec. However, if the display electrode has a resistance equal to or higher than a certain value, the charging time becomes long, and it takes time until the discharge starts, and the time during which the discharge is maintained becomes short.

FIGS. 19 and 20 show changes with time in voltage and current when the electric resistance is low (about 10 Ω or less) and high (about 120 Ω), respectively. According to these figures, the phases of voltage and current are roughly the same during the charging time (period 1) until the first discharge occurs, regardless of the level of electrical resistance. When the discharge generated between the electrodes reaches the sustain discharge in the discharge space (referred to as space discharge here), the current suddenly becomes difficult to flow in the presence of electric resistance. Along with this, the time required for charging becomes longer, and as a result, the time during which the space discharge is maintained becomes shorter than when the electric resistance is low. This is shown in FIG. 20. In the period (period 2) after the start of the space discharge, the phases of the voltage waveform and the current waveform are shown in FIG.
It can be seen from the fact that there is a shift compared to period 2 and the number of peaks is decreasing.

Here, if a material having a high resistance value is used in a region where positive discharge is desired only at the start of discharge and a material having a low resistance value is used in a region where sustain discharge is continuously performed after the start of discharge, depending on the type of discharge. It is possible to change the discharge area. This embodiment utilizes this fact. The specific configuration of this embodiment is as follows. The display electrodes 22 and 2 having the two-stage structure as in the second embodiment
3 is prepared, but each first layer 261, 24 of the X electrode 22 and the Y electrode 23
2 is made of a high resistance material (about several tens kΩ / □) of an oxide conductor mainly composed of Ca and Mg. As a result, the starting discharge can be generated in the first discharge gap 64 only at the beginning of the discharge period. Further, after the discharge is started, positive discharge is performed in the second discharge gap 65 between the second layers 222 and 232 having a low resistance value, and good sustain discharge can be performed.
As described above, in the present embodiment, the sustain discharge in the second discharge gap 65 due to the second layers 222 and 232 is much more likely to occur than the starting discharge in the first discharge gap 64 due to the first layers 261 and 241. ing.

The resistance value can be adjusted by changing the amount of oxygen contained in the oxide conductor.
Further, as a high resistance material other than the above, thin ITO or the like can be considered. Further, as the resistance value, several hundred Ω / □ or more can obtain the above effect to some extent,
A resistance value of several tens of kΩ / □ is desirable because a clear effect can be obtained.

As a variation of this embodiment, for example, instead of giving a high resistance value to the first layer, as shown in FIG.
The first layer 231 and the second layer 2 of the Y electrode 23 as shown in the PDP sectional view of
A resistor 243 may be provided between the second electrode 232 and the resistor 32, and the Y electrode 23 may be energized from the second layer 232 side. As yet another variation, in the plan view showing the arrangement pattern of the display electrodes in FIG. 22, the configuration around the display electrodes 22 and 23 in the third embodiment is carefully considered, and a resistor 262 is provided at the bottom of the protrusion 260. It shows the inserted state. As a variation of the fifth embodiment, the first and second discharge gaps may be present by using the protrusions as described above.

<Setting of discharge gap of PDP and discharge gas (filled gas) composition> The present invention is characterized in that the first discharge gap and the second discharge gap are present between a plurality of display electrodes. Here, a method for specifically determining the values of these discharge gaps prior to the production of the PDPs of the above-described embodiments will be described. i. Discharge gap and discharge gas composition When considering the discharge gaps of multiple display electrodes suitable for starting discharge and sustain discharge, it is also taken into consideration that the characteristics of discharge greatly depend on the composition of the discharge gas (filled gas). There is a need to. Therefore, it is desirable to first narrow down the components of the discharge gas to some extent. As an example, it is assumed here that a general Ne-Xe-based discharge gas is used,
The ratio of Xe in the Ne-Xe system discharge gas was considered in parallel with the discharge gap.

With respect to the discharge gas and the discharge gap, generally, P due to the enclosed gas pressure P (Torr) and the discharge gap d (cm).
d products are related to each other ("Electronic display device", Ohmsha, 1984, P.1).
13-114). Therefore, this Pd product is used as the discharge start voltage V
As a function of f and discharge efficiency (relative value), a range in which an appropriate Pd product can be taken was selected from the characteristics indicated by each function, and thereby the Xe ratio in the discharge gas and the discharge gap were determined.

The specific Pd product was obtained by measurement by the following method. ii. Measurement of discharge start voltage and discharge efficiency with respect to Pd product In a vacuum chamber, an AC surface discharge type PDP model (driving gap between a pair of display electrodes is 40 μm, 60 μm, 90 μm between a pair of display electrodes) similar to that of the PDP of the present invention. The above three types of PDP models are used, and the PDP model can be driven from outside the vacuum chamber by an aging circuit (applied pulse is set to 20 kHz). Also, a gas cylinder was connected from outside the vacuum chamber through a gate valve so that the discharge gas could be sealed in the vacuum chamber at a predetermined pressure at a suitable time. When measuring, determine the ratio of Xe in the discharge gas.
Divided into 2%, 5%, and 10% cases, P in each case
A DP model was prepared and driven while appropriately changing the enclosed gas pressure P (that is, while changing the Pd product). The illustration of these experimental devices is omitted.

Then, the timing at which the PDP model starts to emit light after the start of driving was detected using a luminance meter, and the applied voltage at that time was recorded as the discharge start voltage Vf. As a result, a function curve having the discharge start voltage Vf as the vertical axis and the Pd product as the horizontal axis is produced, and Paschen (Pasche) known as a curve showing the relationship of the discharge start voltage Vf with respect to the Pd product is produced.
n) The curve was obtained.

On the other hand, with respect to the discharge sustaining voltage Vm, after the discharge shifts to the sustaining discharge (the measured value of the luminance meter becomes almost constant), the applied voltage value is gradually decreased and the light emission disappears. It was recorded as the applied voltage value at that time. Then, a relative value of the discharge efficiency is calculated using each discharge sustaining voltage Vm, a function curve is prepared with the relative value of the discharge efficiency on the vertical axis and the Pd product on the horizontal axis, and the relationship of the discharge efficiency to the Pd product is shown. The curve shown (discharge efficiency curve) was obtained. The value of each discharge efficiency was calculated from the discharge sustaining voltage Vm, the discharge current I, the luminance L, and the light emitting area S by the following formula 1. [Equation 1] Discharge efficiency η = π ・ S ・ L / (Vm ・ I) The Paschen curve is a downward curve, the discharge efficiency curve is an upward curve, and both curves have the minimum value of the discharge start voltage in the respective curve directions. It has a peak of Vf _min or the maximum value of discharge efficiency. Focusing on the value of the Pd product corresponding to each of these peaks, the range of the value of the Pd product that is considered to be appropriate in the actual production of the PDP is obtained. Therefore, how clearly a peak appears in the curve is Pd.
This is the first point in determining the product.

The Paschen curve and the discharge efficiency curve having such a shape can be obtained with a discharge gas other than the Ne--Xe system discharge gas. Further, in a multi-component discharge gas such as a Ne-Xe-based gas, it has been known that the above-mentioned curves can be obtained, for example, with respect to the partial pressure (P _Xe ) of Xe gas in the discharge gas. iii. Measurement Results The Paschen curves obtained as described above are summarized in FIG. 23, and the discharge efficiency curves are summarized in FIG. 24. In each figure, (a),
(B) and (c) are the cases where the Xe ratios are 5%, 10%, and 2%, respectively.

When the Xe ratio is 5%, the Paschen curve of FIG. 23 (a) shows that the Pd product near Vf _min is 1 to 5 (T
It can be seen that a clear peak is included in the range of 2 to 4 (Torr.cm), including a relatively sharp curve in the range of (orr.cm). The range of the Pd product corresponding to the peak can be further narrowed down to 2.5 to 3.5 (Torr · cm). Moreover, the discharge starting voltage Vf near the peak is lower than 200V. Such a curve is a Paschen curve when the Xe ratio is 10%. Fig. 23 (b)
However, although it seems to be almost the same, in this case, the range of the Pd product corresponding to the peak becomes a slightly small value (about 1 to 3 Torr · cm).

On the other hand, the discharge efficiency curve when the Xe ratio is 5% is shown in FIG.
In (a), P corresponding to the periphery including the peak of the curve
The d product is in the range of 4 to 12 (Torr · cm), and the clear peak is further in the range of 6 to 10 (Torr · cm). Looking only at the position very close to the peak, the range falls within the range of 7 to 9 (Torr · cm). Further, the curve reaches a value of approximately 2.8 or more from the stage where the Pd product is in a wide range of 4 to 12 (Torr · cm), and the maximum value reaches about 3. On the other hand, when the Xe ratio is 10%, according to the discharge efficiency curve FIG. 24 (b), the peak at this time reaches a maximum of about 3.5 in the range of about 3 to 10 (Torr.cm). The Pd product corresponding to this peak is about 4 to 7 (Torr
・ It seems to be within the range of (cm).

As described above, when the Xe ratio is 5% or 10%, the peaks of the Paschen curve and the discharge efficiency curve can be confirmed relatively clearly, and therefore both the discharge starting voltage Vf and the discharge efficiency can be confirmed. It becomes possible to easily select the range of each Pd product, and to determine its specific value. Further, in the case of these Xe ratios, the values of the Pd products corresponding to the respective peaks of the Paschen curve and the discharge efficiency curve are not so large, so that, for example, to secure the first discharge gap and the second discharge gap, respectively. Space can be reduced.

By the way, when the Xe ratio is 2%, as shown in FIG. 23 (c) of the Paschen curve, the shape of the peripheral curve including the peak is in the range of about 4 to 6 (Torr.cm) of the Pd product. Draw a curve gently. Therefore, the discharge start voltage V
For f, it is difficult to determine the position of a clear peak. Further, since the curve as a whole curves in the range of the Pd product having a relatively large value, the value of the Pd product corresponding to the peak also becomes large. On the other hand, also in the discharge efficiency curve FIG. 24 (c), the value of the Pd product corresponding to the peak position becomes larger than that when the Xe ratio is 5% or 10% (approximately 12 to 20 (Tor).
r · cm) range).

When the value of the product of each Pd for the discharge start voltage Vf and the discharge efficiency is greatly increased in this way, the discharge gas pressure P and the discharge gap d must be kept considerably large accordingly. This is an obstacle to manufacturing a PDP having a fine cell and is considered to be less desirable. iv. Determination of discharge gap and Xe ratio Ne-Xe that can be used satisfactorily as described above
The system discharge gas has a Xe ratio of 5% in its composition.
Alternatively, 10% is considered appropriate. Therefore,
Next, either Xe ratio of 5% or 10% will be selected, but the commonly used Ne-X
In many e-based discharge gases, the Xe ratio is about 5%. Therefore, in this case, it is considered that the discharge gas having the Xe ratio of 5% is suitable for producing the PDP of the above-described embodiment.

That is, as described above, the discharge start voltage V
The minimum value Vf of f_minSuitable for (and first discharge gap)
Pd product is the range around the peak of Paschen curve
According to the desired range order: Pd product; 2.5-3.5, 2-4, 1-5 (Torr · cm) Instead of this Pd product, the partial pressure P of the Xe gas in the discharge gas
_XeBy P_XeExpressed in d product, the order of the desired range
In the beginning, it becomes almost as follows. Here, P = 20P _XeWhen
To do.

[0073] _{P Xe} d product; 0.12～0.18,0.10～0.20,
0.05 to 0.25 (Torr · cm) Further, according to the range corresponding to the peak periphery of the discharge efficiency curve, the range of the Pd product suitable for the discharge efficiency (and the second discharge gap) is as follows in the order of the desirable range. become. Pd product; If the 7~9,6~10,4~12 (Torr · cm) The Pd product is expressed by _{P Xe} d product, substantially as follows in order of desired range.

[0074] _{P Xe} d product; 0.35～0.45,0.30～0.50,0.
20 to 0.60 (Torr · cm) As a result of considering the range of these Pd product values, in the embodiment of the present invention, the Pd product value suitable for the firing voltage is 4,
The value of the Pd product suitable for the discharge efficiency was set to 8. Specifically, the discharge gas pressure P was 2000 Torr, and the first discharge gap was 20 μm (20 × 10 ⁻⁴ c
m) and the second discharge gap was 40 μm (40 × 10 ⁻⁴ cm).

In the discharge gas of a multi-component system, Xe
It was found from another experiment that the above curves show the same tendency as that of the Ne-Xe system discharge gas.

[0076]

As described above, according to the present invention, in a gas discharge panel such as a PDP, a discharge gap is secured in accordance with each of a starting discharge and a sustaining discharge in a display electrode, thereby improving luminous efficiency. It is possible to obtain good discharge efficiency.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional perspective view of a PDP according to a first embodiment.

FIG. 2 is a plan view showing an arrangement pattern of display electrodes in the first embodiment.

FIG. 3 is a plan view showing a layout pattern of display electrodes in a variation of the first embodiment.

FIG. 4 is a partial cross-sectional perspective view of a PDP according to the second embodiment.

FIG. 5 is a PDP sectional view around a display electrode in the second embodiment.

FIG. 6 is a PDP sectional view around a display electrode in a variation of the second embodiment.

FIG. 7 is a PDP sectional view around a display electrode in a variation of the second embodiment.

FIG. 8 is a PDP sectional view around a display electrode in a variation of the second embodiment.

9 is a PDP sectional view around a display electrode in a variation of the second embodiment. FIG.

FIG. 10 is a PDP sectional view around a display electrode in a variation of the second embodiment.

FIG. 11 is a partial cross-sectional perspective view of the PDP according to the third embodiment.

FIG. 12 is a plan view showing an arrangement pattern of display electrodes in the third embodiment.

FIG. 13 is a plan view showing an arrangement pattern of display electrodes in a variation of the third embodiment.

FIG. 14 is a plan view showing a layout pattern of display electrodes in a variation of the third embodiment.

FIG. 15 is a plan view showing an arrangement pattern of display electrodes according to the fourth embodiment.

FIG. 16 is a PDP sectional view around a display electrode in the fourth embodiment.

FIG. 17 is a PDP sectional view around a display electrode in a variation of the fourth embodiment.

FIG. 18 is a PDP sectional view around a display electrode in the fifth embodiment.

FIG. 19 is a graph showing changes with time of applied current and applied voltage when the resistance value of the display electrode is low.

FIG. 20 is a graph showing changes with time of applied current and applied voltage when the resistance value of the display electrode is high.

FIG. 21 is a PDP sectional view around a display electrode in a variation of the fifth embodiment.

FIG. 22 is a plan view showing an arrangement pattern of display electrodes in a variation of the fifth embodiment.

FIG. 23 is a graph showing the characteristics of the firing voltage with respect to the Pd product (Paschen curve). FIG. 23 (a) is a Paschen curve when the Xe ratio in the discharge gas is 5%.
FIG. 23 (b) is a Paschen curve when the Xe ratio in the discharge gas is 10%. FIG. 23 (c) is a Paschen curve when the Xe ratio in the discharge gas is 2%.

FIG. 24 is a graph showing characteristics of discharge efficiency with respect to Pd product (discharge efficiency curve). FIG. 24 (a) is a discharge efficiency curve when the Xe ratio in the discharge gas is 5%. FIG. 24 (b) is a discharge efficiency curve when the Xe ratio in the discharge gas is 10%. FIG. 24 (c) is a discharge efficiency curve when the Xe ratio in the discharge gas is 2%.

[Explanation of symbols]

10, 11, 12, 13 Cell 20 Front panel 22 Display electrode (X electrode) 23 Display electrode (Y electrode) 24 Dielectric layer 28 Address electrode 39, 41, 43, 45, 47, 49, 51, 53, 55, 57, 59, 62, 6
4, 66, 71 First discharge gap 40, 42, 44, 46, 48, 50, 52, 54, 56, 58, 60, 63, 6
5, 67, 72 Second discharge gap

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Hiroyuki Tanaka             1006 Kadoma, Kadoma-shi, Osaka Matsushita Electric             Sangyo Co., Ltd. (72) Inventor Yoshiki Sasaki             1006 Kadoma, Kadoma-shi, Osaka Matsushita Electric             Sangyo Co., Ltd. (72) Inventor Makoto Kudo             1006 Kadoma, Kadoma-shi, Osaka Matsushita Electric             Sangyo Co., Ltd. (72) Inventor Masaki Aoki             1006 Kadoma, Kadoma-shi, Osaka Matsushita Electric             Sangyo Co., Ltd. (72) Inventor Hidetaka Higashino             1006 Kadoma, Kadoma-shi, Osaka Matsushita Electric             Sangyo Co., Ltd. (72) Inventor Kinzo Nonomura             1006 Kadoma, Kadoma-shi, Osaka Matsushita Electric             Sangyo Co., Ltd. F-term (reference) 5C040 FA01 FA04 GB03 GB14 GC02                       GC11 GJ02 GJ08

Claims (32)

[Claims] 1. A plurality of cells filled with a discharge gas are arranged in a matrix between a pair of plates provided so as to face each other, and a pair of display electrodes are provided on the opposite surfaces of the plates. In a gas discharge panel that is arranged so as to be stretched in the row direction so as to straddle the two discharge electrodes, a first discharge gap and a second discharge gap wider than the first discharge gap between the pair of display electrodes. A gas discharge panel characterized by the presence of a discharge gap. 2. When the discharge gas pressure is P and the discharge gap is d, the first discharge gap is the minimum or the vicinity of the discharge start voltage in a Paschen curve showing the relationship between the Pd product and the start discharge voltage. 7. The second discharge gap includes a gap corresponding to the maximum discharge efficiency in the discharge efficiency curve showing the relationship between the Pd product and the discharge efficiency. The gas discharge panel described in 1. 3. One display electrode branches into first and second electrode limbs, the other display electrode is inserted between the electrode limbs, and a gap between the first electrode limb and the other display electrode. Is a first discharge gap, and the gap between the second electrode limb and the other display electrode is a second discharge gap.
The described gas discharge panel. 4. The gas discharge panel according to claim 3, wherein the outer edges of the first and second electrode limbs extend to the vicinity of the boundary between cells adjacent in the column direction. 5. A pair of display electrodes both branch into electrode limbs, and the electrode limbs of the other display electrode are inserted between the first and second electrode limbs of one display electrode, and The gap between one electrode limb and the electrode limb of the other display electrode is the first discharge gap, and the gap between the second electrode limb of one display electrode and the electrode limb of the other display electrode is the second discharge. 3. The gas discharge panel according to claim 2, wherein the gas discharge panel is a gap. 6. The electrode limb closest to the cells adjacent in the column direction among the arranged electrode limbs has an outer edge extending to the vicinity of the boundary between the adjacent cells. The described gas discharge panel. 7. The first electrode limb of the one display electrode,
The gas discharge panel according to claim 5, wherein power is supplied through a resistor. 8. The gap between the pair of display electrodes has a plurality of gap values in a direction perpendicular to the plane of the gas discharge panel, and the first discharge gap and the second discharge gap are included in the plurality of gap values. 3. The gas discharge panel according to claim 2, wherein the gas discharge panel includes corresponding gap values. 9. The display electrode of at least one of the pair of display electrodes, which has a side surface facing the other display electrode, is inclined, curved, or multi-stepped in a direction perpendicular to the plane of the gas discharge panel. 9. The gas discharge panel according to claim 8, wherein the gas discharge panel is formed into a hollow. 10. At least one of the display electrodes is formed in a multi-step shape in a direction perpendicular to the plane of the gas discharge panel, and has an electrode step portion that forms a first discharge gap with the other display electrode. 10. The gas discharge panel according to claim 9, wherein the electrode step portion is formed of a resistor. 11. At least one display electrode comprises a first conductive member and a second conductive member, the first conductive member and the second conductive member in a direction perpendicular to the panel plane of the gas discharge panel. The first discharge gap is provided between the other display electrode and the first conductive member, and the second discharge gap is provided between the other display electrode and the second conductive member. 9. The gas discharge panel according to claim 8, which is present. 12. The gas discharge panel according to claim 11, wherein a resistor is arranged between the first conductive member and the second conductive member. 13. In at least one display electrode of a pair of display electrodes, one or more protrusions are formed for each cell at an electrode edge portion facing the other display electrode. A gap corresponding to the first discharge gap exists between the display electrode and a gap corresponding to the second discharge gap between a portion other than the portion where the protrusion is formed and the other display electrode. The gas discharge panel according to claim 2, wherein 14. The gas discharge panel according to claim 13, wherein at least a root portion of the protrusion is made of a resistance material. 15. The product of the enclosed gas pressure and the discharge gap is 1 to 5 (To
3. The gas discharge panel according to claim 2, wherein the first discharge gap is set to be rr · cm). 16. The product of the enclosed gas pressure and the discharge gap is 2 to 4 (To
3. The gas discharge panel according to claim 2, wherein the first discharge gap is set to be rr · cm). 17. The product of the enclosed gas pressure and the discharge gap is 2.5 to 3.5.
3. The gas discharge panel according to claim 2, wherein the first discharge gap is set to be (Torr · cm). 18. The filled gas contains a Xe component, and the product of the partial pressure of the Xe gas in the filled gas pressure and the discharge gap is 0.02 to 0.10.
3. The gas discharge panel according to claim 2, wherein the first discharge gap is set to be (Torr · cm). 19. The enclosed gas contains a Xe component, and the product of the partial pressure of the Xe gas in the enclosed gas pressure and the discharge gap is 0.04 to 0.08.
3. The gas discharge panel according to claim 2, wherein the first discharge gap is set to be (Torr · cm). 20. The enclosed gas contains a Xe component, and the product of the partial pressure of the Xe gas in the enclosed gas pressure and the discharge gap is 0.05 to 0.07.
3. The gas discharge panel according to claim 2, wherein the first discharge gap is set to be (Torr · cm). 21. The product of the enclosed gas pressure and the discharge gap is 4 to 12 (Tor
3. The gas discharge panel according to claim 2, wherein the second discharge gap is set to be r · cm). 22. The product of the enclosed gas pressure and the discharge gap is 6 to 10 (Tor
3. The gas discharge panel according to claim 2, wherein the second discharge gap is set to be r · cm). 23. The product of the enclosed gas pressure and the discharge gap is 7 to 9 (Torr
The gas discharge panel according to claim 2, wherein the second discharge gap is set to be (cm). 24. The enclosed gas contains a Xe component, and the product of the partial pressure of the Xe gas in the enclosed gas pressure and the discharge gap is 0.1 to 0.3 (To.
3. The gas discharge panel according to claim 2, wherein the second discharge gap is set to be rr · cm). 25. The enclosed gas contains a Xe component, and the product of the partial pressure of the Xe gas in the enclosed gas pressure and the discharge gap is 0.15 to 0.25.
3. The gas discharge panel according to claim 2, wherein the second discharge gap is set to be (Torr · cm). 26. The enclosed gas contains a Xe component, and the product of the partial pressure of the Xe gas in the enclosed gas pressure and the discharge gap is 0.16 to 0.20.
3. The gas discharge panel according to claim 2, wherein the second discharge gap is set to be (Torr · cm). 27. A front cover plate and a back plate are arranged so as to face each other, a plurality of cells filled with a discharge gas are arranged in a matrix between the plates, and a pair of cells is provided on one surface of the both plates. In the gas discharge panel in which the display electrode of the display electrode is arranged to extend in the row direction while straddling a plurality of cells, and the dielectric layer is arranged on the display electrode, between the pair of display electrodes, A gas discharge panel characterized by having two types of discharge gaps, one discharge gap and a second discharge gap wider than the first discharge gap. 28. When the discharge gas pressure is P and the discharge gap is d, the first discharge gap corresponds to a minimum discharge discharge voltage or its vicinity in a Paschen curve showing the relationship between the Pd product and the start discharge voltage. 7. The second discharge gap includes a gap corresponding to the maximum discharge efficiency in the discharge efficiency curve showing the relationship between the Pd product and the discharge efficiency. 27. The gas discharge panel described in 27. 29. One display electrode branches into first and second electrode limbs, the other display electrode is inserted between the electrode limbs, and the first display limb and the other display electrode are provided. Wherein a first discharge gap exists, and a second discharge gap exists between the second electrode limb and the other display electrode.
28. The gas discharge panel described in 28. 30. A pair of display electrodes both branch into electrode limbs, and the electrode limbs of the other display electrode are inserted between the first and second electrode limbs of one display electrode, and The gap between one electrode limb and the electrode limb of the other display electrode is the first discharge gap, and the gap between the second electrode limb of one display electrode and the electrode limb of the other display electrode is the second discharge. 29. The gas discharge panel according to claim 28, which is a gap. 31. The gap between the pair of display electrodes has a plurality of gap values in a direction perpendicular to the plane of the gas discharge panel, and the first discharge gap and the second discharge gap are included in the plurality of gap values. 29. Each including a corresponding gap value.
The described gas discharge panel. 32. At least one display electrode comprises a first conductive member and a second conductive member wider than the first conductive member, and the first conductive member and the second conductive member are The second discharge gap is present between the other display electrode and the first conductive member, and the second discharge gap is provided between the other display electrode and the first conductive member. 29. The gas discharge panel according to claim 28, wherein a first discharge gap exists between the member and the member.