JP2001068030A - 3-electrode AC plasma display panel - Google Patents

Abstract

(57) [Summary] An object of the present invention is to realize a high-speed display without errors by accumulating wall charges required for sustain by an address discharge as short as possible. A plurality of sustain electrode pairs, which are paired with sustain electrodes lined up across a discharge slit, are arranged in parallel across a reverse slit, and a unit light emitting region is defined at an intersection between the sustain electrode pair and an address electrode. In the three-electrode type AC plasma display panel 4, the distance from the center of the discharge slit S14 to the reverse slit is different between the pair of sustain electrodes X4 and Y4, and the distance between the sustain electrode Y4 and the address electrode A4 is shorter. Thus, an address discharge for selecting light emission of the unit light emitting region is generated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a matrix display type AC plasma display panel (PlasmaDispla).
y Panel: PDP) is applied to a surface discharge type PDP that generates a discharge along a screen.

[0002] A PDP is a self-luminous type thin display device capable of high-speed display suitable for television. The surface-discharge type AC color PDP is used for screen output of a computer or the like, and is attracting attention as a means for realizing a large screen for HDTV.

In a matrix display type PDP in which a screen is formed by a group of cells as display elements, a memory effect is used to maintain a lighting state of cells (sustain). The AC PDP is structured so as to structurally have a memory function by coating a display electrode with a dielectric. In displaying by the AC type PDP, wall charges are accumulated only in cells to be turned on (emit light) in accordance with display contents, and a voltage having an alternating polarity (sustain voltage) is commonly applied to all cells in one line. Apply. The sustain voltage is lower than the discharge start voltage between the sustain electrodes. In a cell with wall charges, the wall voltage is superimposed on the sustain voltage, so the effective voltage applied to the cell (cell voltage)
Exceeds the discharge starting voltage, and discharge occurs. After the wall charges have once disappeared due to the discharge, wall charges having a polarity opposite to the previous polarity accumulate. Therefore, a discharge occurs each time the sustain voltage is applied. If the application cycle of the sustain voltage is shortened, an apparently continuous lighting state can be obtained.

[0004]

2. Description of the Related Art FIG. 10 is a sectional view showing a main part of an internal structure of a conventional PDP 90. As shown in FIG. The PDP 90 is a surface-discharge type PDP in which three electrodes correspond to a unit light-emitting region of a matrix display.
DP. In the PDP 90, the glass substrate 91 on the front side
On the inner surface of the substrate, a pair of sustain electrodes (sustain electrodes) 93 and 94 for generating a discharge (surface discharge) along the substrate surface are arranged for each line of the matrix display. A dielectric layer 96 for AC driving is provided so as to insulate these sustain electrodes 93 and 94 from the discharge space 99. On the surface of the dielectric layer 96, a protective film 97 is deposited. Both the dielectric layer 96 and the protective film 97 have translucency. On the other hand, on the inner surface of the glass substrate 92 on the rear side, address electrodes 95 are arranged so as to be orthogonal to the sustain electrodes 93 and 94. A phosphor layer 98 is provided so as to cover the glass substrate 92 including the upper part of the address electrode 95.

The sustain electrode 93 is composed of a band-shaped transparent conductive film 931 in plan view and a band-shaped metal thin film 93 narrower than that.
And 2. Similarly, the sustain electrode 94
This is also composed of a band-shaped transparent conductive film 941 in a plan view and a band-shaped metal thin film 942 having a smaller width. The metal thin films 932 and 942 are auxiliary conductors for ensuring proper conductivity, and are superimposed on edges of the transparent conductive films 931 and 941 far from the surface discharge gap.

For display by the PDP 90, line-sequential addressing is performed. When the surface discharge cells in the unit light emitting region are turned on (emit light), the address electrode 95 and the sustain electrode 94 are appropriately biased to generate an opposing discharge (discharge in the thickness direction of the panel), and a dielectric layer is formed. Wall charges are accumulated on the surface of the dielectric layer 96 (the protective film 97 is also a part of the dielectric layer 96). When the surface discharge cell is not turned on, the potential of each electrode is set so that no counter discharge occurs.
After the addressing for setting the lighting / non-lighting of the surface discharge cells as described above, the sustain electrode 94 and the sustain electrode 9 are set.
3 and a sustain voltage is applied such that the polarities of these relative voltages alternate with each other, and a surface discharge is generated periodically. The phosphor layer 98 is locally excited mainly by ultraviolet rays UV generated by surface discharge and emits visible light of a predetermined color. Of this visible light, the light that passes through the glass substrate 91 becomes the display light. By forming the sustain electrodes 93 and 94 located on the front side of the discharge space 99 in the above-described laminated structure,
The light emission efficiency can be increased by expanding the surface discharge region while minimizing the shielding of the display light.

The gap S1 between the sustain electrode 93 and the sustain electrode 94 in each line is called a "discharge slit". A part of the discharge slit S1 in the line direction is a surface discharge gap. The width of the discharge slit S1 (the dimension in the arrangement direction of the sustain electrodes 93 and 94) is 100 to 20.
It is selected so that surface discharge occurs when a driving voltage of about 0 volt is applied. On the other hand, the gap S2 between the sustain electrode 93 and the sustain electrode 94 between adjacent lines is called an "inverted slit", and the inverted slit S
The width of 2 is selected to be a value sufficiently larger than the width of the discharge slit S1. That is, discharge is prevented between the sustain electrodes 93 and 94 arranged with the reverse slit S2 therebetween. Thus, the discharge slit S1 and the reverse slit S2
And by arranging the sustain electrodes 93 and 94, each line can selectively emit light.

[0008]

The counter discharge in addressing (hereinafter, referred to as address discharge) starts between the metal thin film 942 of the sustain electrode 94 and the address electrode 95, and a wall charge is generated above the metal thin film 942. As the charge accumulates, the discharge shifts between the transparent conductive film 941 and the address electrode 95. When wall charges accumulate above the transparent conductive film 941 and the electric field in the discharge space 99 weakens, the address discharge stops. First, the metal thin film 942 and the address electrode 95
The reason for the occurrence of a discharge is that the metal thin film 942 is closer to the address electrode 95 than the transparent conductive film 941 is. Another factor is a difference in electric field strength between the metal thin film 942 and the transparent conductive film 941. Since the discharge space 99 is a kind of capacitor, a charging current flows through the sustain electrode 94 before the start of the address discharge. Since the metal thin film 942 has lower resistance than the transparent conductive film 941, the current density of the metal thin film 942 is higher than that of the transparent conductive film 941.
Therefore, in the vicinity of the metal thin film 942, the transparent conductive film 94
An electric field stronger than around 1 is generated, and discharge is likely to occur.

However, as the number of lines increases with higher definition of the screen and the time that can be allocated to addressing of one line within the display period of one frame becomes shorter, the vicinity of the discharge slit S1 during addressing (that is, the vicinity of the discharge slit S1) Wall charges accumulated at the center of the line) were reduced, and lighting leakage in which surface discharge did not occur in the subsequent sustain period was likely to occur. This is because if the addressing time is short, the voltage application to the electrodes is released and the address discharge stops before the discharge between the transparent conductive film 941 and the address electrode 95 starts. An increase in the number of gradations also causes a reduction in the addressing time.

Further, in the prior art, since a relatively large amount of wall charges are accumulated above the reverse slit S2, there has been a problem that erroneous lighting of surface discharge cells in another adjacent line is likely to occur. SUMMARY OF THE INVENTION It is an object of the present invention to accumulate wall charges required for sustain by an address discharge for a time as short as possible, thereby realizing an error-free high-speed display.

[0011]

An address discharge is generated at a position near the discharge slit S1. As a result, a relatively large amount of wall charges is accumulated in the vicinity of the discharge slit S1, and the wall charges effectively act on the sustain. Reverse slit S2
, The wall charges hardly accumulate in the vicinity of, so that the erroneous lighting of the surface discharge cells of the other adjacent lines hardly occurs. Also,
When a discharge occurs near the discharge slit S1, a surface discharge between the sustain electrodes easily occurs due to a priming effect or the like. When surface discharge occurs, the accumulated amount of wall charges effective for sustain increases.

The PDP according to the first aspect of the present invention has a pair of substrates forming a discharge space, and a plurality of sustain electrodes forming a pair on one of the substrates are arranged with a pair of sustain electrodes separated by a discharge slit for surface discharge. An electrode pair is arranged in parallel with a reverse slit for preventing discharge between the pairs, and a plurality of address electrodes intersecting with the sustain electrode pair are arranged on the other substrate,
A three-electrode AC plasma display panel in which a unit light emitting region is defined at an intersection between the sustain electrode pair and the address electrode, wherein a distance from a center of a discharge slit to a reverse slit in the pair of sustain electrodes is different from each other. In contrast, an address discharge for selecting light emission of the unit light emitting region is generated by the sustain electrode and the address electrode having a shorter distance.

According to a second aspect of the present invention, there is provided a PDP, wherein a strip-shaped partition partitioning the discharge space is provided between each address electrode on the other substrate, and a plurality of unit light emitting regions are arranged in the discharge space partitioned by the strip-shaped partition. It was done.

According to a third aspect of the present invention, there is provided a PDP having a pair of parallel sustain electrodes serving as a discharge pair, and an address electrode intersecting the pair of sustain electrodes. And generating an address discharge for selecting light emission of the unit light emitting region between one sustain electrode of the sustain electrode pair and the address electrode, and generating a sustain discharge for maintaining light emission of the unit light emitting region between the sustain electrode pair. A three-electrode AC plasma display panel configured to generate an address discharge, wherein one of the pair of sustain electrodes has a narrower electrode width than the other sustain electrode for generating the address discharge. Things.

[0015]

FIG. 1 is a perspective view showing an internal structure of a PDP according to the present invention, and FIG. 2 is a sectional view of a main part of the PDP.

The PDP 1 shown in FIG. 1 is a three-electrode AC PDP of a surface discharge type capable of full-color display, and is called a reflection type after being classified according to the arrangement of phosphors. PD
At P1, sustain electrodes (sustain electrodes) X and Y are arranged on the inner surface of the glass substrate 11 on the front side of the substrate pair forming the panel envelope. A dielectric layer 17 made of low-melting glass and having a thickness of about 32 μm is provided over the entire display region so as to cover the sustain electrodes X and Y with respect to the discharge space 30. On the surface of the dielectric layer 17, a magnesium oxide film having a thickness of several thousand angstroms is deposited as a protective film 18. Both the dielectric layer 17 and the protective film 18 have translucency.

On the other hand, address electrodes A are arranged on the inner surface of the rear glass substrate 21 so as to be orthogonal to the sustain electrodes X and Y. The address electrode A is provided on the base layer 22 and is covered with a dielectric layer 24 having a thickness of about 10 μm. On the dielectric layer 24, a height of 150
Each of the address electrodes A is formed of
Are provided one by one. These partition walls 29 divide the discharge space 30 into sub-pixels (unit light emitting regions) in the line direction, and define the gap size of the discharge space 30. Then, the phosphor layers 28R, 28G, 28B of three colors of R, G, B for color display are covered so as to cover the surface of the dielectric layer 24 and the side surfaces of the partition wall 29 including the upper part of the address electrode A. (Hereinafter, it is described as the phosphor layer 28 when there is no need to distinguish the colors.) The discharge space 30 is filled with a penning gas in which xenon (about 1 to 15% mol) is mixed with neon as a discharge gas. In the PDP 1, one pixel (pixel) of display is composed of three adjacent sub-pixels (unit light emitting areas) in each line L. The emission color of each line in each column is the same.

In the PDP 1, the discharge space 3 is arranged in the column direction of the matrix display (the direction in which the sustain electrodes X and Y are arranged).
There is no partition separating 0. Therefore, the electrode gap (reverse slit) between the lines L is larger than the surface discharge gap (for example, 80 to 140 μm) (for example, 400 to 50 μm).
0 μm).

As shown in FIG. 2, the sustain electrode X includes an ITO film x1 patterned in a band shape in plan view,
Metal film x2 patterned into a narrower band
It is composed of Similarly, the sustain electrode Y has a band-shaped ITO film y1 and a band-shaped metal film y having a smaller width.
And 2. Each of the metal films x2 and y2 is a non-light-transmitting thin film having a three-layer structure of chromium / copper / chrome.
As auxiliary conductors for reducing the line resistance of the sustain electrodes X and Y, they are formed on the surface on the discharge space 30 side of the ITO films x1 and y1. Metal film x of sustain electrode X
2 is arranged close to the edge of the ITO film x1 farther from the discharge slit S1 as in the conventional case. On the other hand, the metal film y2 of the sustain electrode Y is formed of the ITO film y1.
Are arranged close to the edge near the discharge slit S1 in FIG.

The ITO films x1, y1 and the metal films x2, y2
Table 1 shows a specific example of the dimensions of. The values in Table 1 are design values when the screen size is 42 inches. However, the preferable range of the thickness of the ITO films x1 and y1 is 0.015 to 0.0
The preferred range of 3 μm and the width is in the range of 250 to 300 μm. The preferred range of the thickness of the metal films x2 and y2 is 1
The preferred range of the width is 50 to 200 μm.

[0021]

[Table 1]

FIG. 3 is a schematic diagram of the electrode matrix of the PDP 1 and shows the glass substrates 11 and 21 viewed from the discharge space 30.
Are schematically shown. 1 of matrix display
A line corresponds to a pair of sustain electrodes X and Y, and one column corresponds to one address electrode A. Then, three columns correspond to one pixel. Table 2 shows the specifications of the screen of PDP1.

[0023]

[Table 2]

In FIG. 3, a hatched frame-like region a
Reference numeral 31 denotes a joining region between the glass substrates 11 and 21. All the sustain electrodes X are led out to one horizontal edge of the glass substrate 11 and all the sustain electrodes Y
Is led out to the other edge. Sustain electrode X
Are integrated with the common terminal Xt for simplification of the drive circuit and are electrically shared. The sustain electrode Y is
In order to enable line-sequential addressing, individual electrodes are provided independently for each line, and individual terminals Yt
It is integrated with. The address electrode A is integrated with the individual terminal At at the vertical edge of the glass substrate 21.

The area where the discharge cells are defined by the sustain electrodes X and Y and the address electrode A inside the junction area a31 is the effective display area a1 (screen). A non-display area a2 having a frame shape is provided between the effective display area a1 and the bonding area a31 in order to avoid the influence of outgassing of the bonding material. In the non-display area a2 of the glass substrate 21, a through hole 210 for enclosing a discharge gas is provided.
Is provided.

The PDP 1 having the above configuration is used as a display device such as a wall-mounted television receiver in a state where the PDP 1 is combined with a drive unit (not shown). that time,
The PDP 1 is electrically connected to a drive unit via a flexible wiring board or the like.

Next, a method of driving the PDP 1 will be described. Here, an example in which the driving method disclosed as the third embodiment in JP-A-7-160218 is applied to the PDP 1 will be described.

FIG. 4 is a diagram showing the structure of the field f.
Is a waveform diagram of an applied voltage. For display by the PDP 1, for example, one field f is displayed on the screen (one frame).
Are associated. When performing 256 gradation display, one field f is divided into eight subfields sf.
Each subfield sf is divided into a reset period TR, an address period TA, and a sustain period TS. Then, weighting is performed so that the relative ratio of luminance in each subfield sf is 1: 2: 4: 8: 16: 32: 64: 128, and the number of light emission in the sustain period TS of each subfield sf is set. . Each subfield sf is a screen display period of one gradation level. When reproducing a screen scanned in an interlaced format like a television, two fields f are used to display one screen (one frame).

The reset period TR is a period in which wall charges in the effective display area a1 are erased (entirely erased) in order to prevent the influence of the previous lighting state. As shown in FIG. 5, in the reset period TR, the drive unit applies a _peak value Vr (= Vs) exceeding the surface discharge start voltage Vf _XY to the sustain electrode X.
+ Vw) is applied. At the same time, a positive pulse Paw having a peak value Vaw is applied to all the address electrodes A.

In response to the rise of the write pulse PW, a strong surface discharge is generated in all the lines L, and wall charges are once accumulated in the dielectric layer 17. However, in response to the fall of the write pulse PW, so-called self-discharge occurs due to wall charges, and the wall charges of the dielectric layer 17 disappear. Pulse Paw
Is applied to suppress accumulation of wall charges on the wall surface on the back side of the discharge space 30. A preferable value of the peak value Vaw is a value in the range of the expression (1).

(Vs + Vw) / 4 ≦ Vaw ≦ (Vs + Vw) / 2 (1) The address period is a period in which line-sequential addressing is performed. The sustain electrodes X are biased to a positive potential Vax (for example, +50 volts) with respect to the ground potential, and all the sustain electrodes Y are negatively potential Vsc (for example, -70 volts).
Bias. In this state, each line L is sequentially selected one by one from the first line L, and a negative scan pulse Py is applied to the sustain electrode Y. The potential of the sustain electrode Y of the selected line L temporarily becomes negative potential V
biased to y (eg, -170 volts). Simultaneously with the selection of the line L, a positive address pulse Pa having a peak value Va (for example, +60 volts) is applied to the address electrode A corresponding to the cell to be lit.

In the selected line L, an address discharge occurs between the sustain electrode Y and the address electrode A in the cell to which the address pulse Pa is applied. Since the sustain electrode X is biased to a potential having the same polarity as the address pulse Pa, the address pulse Pa is biased by the bias.
Are canceled, and no discharge occurs between the sustain electrode X and the address electrode A. Further, the bias voltage Vax of the sustain electrode X is set so that the relative voltage between the sustain electrode X and the sustain electrode Y is higher than the surface discharge start voltage Vf _XY in order to prevent accumulation of wall charges in unselected cells in the line L. It is set to be low. Normally, the surface discharge start voltage Vf _XY is higher than the discharge start voltage Vf _AY between the sustain electrode Y and the address electrode A. Potentials Vax, Vy, Va
Satisfies the following relationship.

(Vax + Vy) <Vf _XY (2) (Va + Vy) ≧ Vf _AY (3) In the sustain period TS, the lighting state set by addressing is ensured in order to secure the luminance corresponding to the gradation level. It is a period to maintain. In order to prevent the counter discharge, all the address electrodes A are set to a positive potential (for example, Vs / 2).
And firstly, a positive sustain pulse Ps having a peak value Vs (Vs <Vf _XY ) is applied to all the sustain electrodes Y.
Apply s. Thereafter, a positive sustain pulse Ps having a peak value Vs is alternately applied to the sustain electrode X and the sustain electrode Y.

Each time the sustain pulses Pss and Ps are applied, surface discharge occurs in the cell in which the wall charges are accumulated during the address period TA. In order to stabilize the charge storage state,
The application time of the first sustain pulse Pss is set longer than the application time of the other sustain pulses Ps.

FIG. 6 is a schematic diagram showing transition of wall charges during the address period TA. In the figure, the structure of the PDP 1 is simplified for convenience of explanation. Scan pulse P
By applying y and the address pulse Pa, an address discharge occurs between the sustain electrode Y and the address electrode A. This opposed discharge is caused by the metal film y in the sustain electrode Y.
2 and a discharge between the ITO film y1 and the address electrode A as positive charges accumulate in the dielectric layer 17. Negative charges are accumulated in the phosphor layer 28. The electric field between the sustain electrode Y and the address electrode A is weakened by the accumulation of the positive charge and the negative charge, and the address discharge stops. Since the metal film y2 is arranged close to the discharge slit S1, the electric charge accumulated in the dielectric layer 17 near the discharge slit S1 is equal to the discharge slit S1.
More than the case where it is arranged at a distance from 1 [FIG.
(A)].

On the other hand, floating charges are generated in the discharge space 30 near the discharge slit S1 by the address discharge.
Surface discharge firing voltage Vf _XY by priming effect is lowered. Therefore, a discharge also occurs between the sustain electrode X and the sustain electrode Y, and the amount of accumulation of wall charges on the dielectric layer 17 increases (FIG. 6B).

The wall charges accumulated near the discharge slit S1 effectively act on the sustain. The address discharge in the vicinity of the discharge slit S1 is effective for preventing erroneous lighting of another adjacent line. This is because wall charges hardly accumulate on the reverse slit side.

FIG. 7 is a schematic diagram of the sustain electrode structure of the second PDP 2. PDP2 is a surface discharge type PDP similar to PDP1 described above. In each unit light emitting region of the matrix display, a sustain electrode X2, a sustain electrode Y2,
And an address electrode A2. Although illustration is omitted,
The sustain electrodes X2 and Y2 are connected to the discharge space 3 by a dielectric.
02 is insulated.

The sustain electrode X2 is made of a transparent conductive film x12.
And a metal film x22 as an auxiliary conductor. Metal film x
Numeral 22 is deposited on the surface of the transparent conductive film x12 on the side of the discharge space, and is arranged near the edge of the transparent conductive film x12 far from the discharge slit S12. The sustain electrode Y2 also includes a transparent conductive film y12 and a metal film y22 as an auxiliary conductor. The metal film y22 is made of a transparent conductive film y12.
And is disposed close to the edge of the transparent conductive film y12 closer to the discharge slit S12.

The feature of PDP2 in comparison with PDP1 is that the width w2 of the metal film y22 is larger than the width w1 of the metal film x22. The width of the transparent conductive film y12 is the transparent conductive film x
Twelve widths. By increasing the width w2, the line resistance of the sustain electrode Y2 decreases.
Voltage can be efficiently applied to the cell.

When driving the PDP 2, the sustain electrode Y2 and the address electrode A2 are used for addressing.
The sustain electrode X2 and the sustain electrode Y2 are used for sustain. In the addressing, the address discharge becomes stronger than that of the PDP 1 by an amount corresponding to the decrease in the line resistance of the sustain electrode Y2, and the accumulation amount of the wall charges increases.

FIG. 8 is a schematic diagram of the sustain electrode structure of the third PDP 3. The PDP 3 is a surface discharge type PDP similar to the PDP 1 described above. Each unit light emitting region of the matrix display has a sustain electrode X3 and a sustain electrode Y
3 and an address electrode A3. The sustain electrodes X2 and Y2 are insulated from the discharge space 303 by the dielectric layer 173.

The sustain electrode X3 is made of a transparent conductive film x13.
And a metal film x23 as an auxiliary conductor. Metal film x
Numeral 23 is deposited on the surface of the transparent conductive film x13 on the discharge space side, and is disposed close to the edge of the transparent conductive film x13 far from the discharge slit S13. The sustain electrode Y3 also includes a transparent conductive film y13 and a metal film y23 that is an auxiliary conductor. The metal film y23 is made of a transparent conductive film y13.
Is disposed on the surface on the discharge space side of the transparent conductive film y13 and is arranged near the edge of the transparent conductive film y13 closer to the discharge slit S13.

The feature of PDP3 in comparison with PDP1 is that the metal film y23 has a larger address electrode A than the metal film x23.
It is a point close to 3. This structural feature is generated, for example, by forming the sustain electrode X3 and the sustain electrode Y3 in this order. The sustain electrode X3 is formed, covered with a dielectric material, and then the sustain electrode Y3 is formed. Although a method of making the metal film y23 thicker than the metal film x23 and approaching the address electrode A3 is also applicable, it is more difficult to manufacture than the case where the metal film y23 is formed sequentially.

When driving the PDP 3, the sustain electrode Y3 and the address electrode A3 are used for addressing.
The sustain electrode X3 and the sustain electrode Y3 are used for sustain. In the addressing, the address discharge becomes stronger as compared with the PDP 1 by the portion of the sustain electrode Y3 closer to the address electrode A3, and the accumulated amount of wall charges increases.

FIG. 9 is a sectional view of a principal part of the fourth PDP 4. As shown in FIG. The PDP 4 has three light emitting areas in each unit light emitting area of the matrix display.
This is a three-electrode surface discharge type PDP having two electrodes, and its basic structure is the same as PDP 1 in FIG. On the inner surface of the glass substrate 114 on the front side, the sustain electrodes X4 and
Y4 is arranged in pairs for each line L4 of the matrix display. A dielectric layer 174 for AC driving is provided so as to insulate these sustain electrodes X4 and Y4 from the discharge space 304. A protective film (not shown) is deposited on the surface of the dielectric layer 174. Dielectric layer 17
4 has translucency. On the inner surface of the glass substrate 214 on the rear side, address electrodes A4 are arranged for each column of the matrix display so as to be orthogonal to the sustain electrodes X4 and Y4. The glass substrate 2 including the upper part of the address electrode A4
A phosphor layer 284 is provided so as to cover.

The sustain electrode X4 is composed of a band-shaped transparent conductive film x14 in plan view and a band-shaped metal film x24 narrower than that.
It is composed of On the other hand, the sustain electrode Y4 is made of only metal. The metal film x24 is
It is an auxiliary conductor for ensuring proper conductivity, and is superimposed on the edge of the transparent conductive film x14 on the side remote from the discharge slit S14. In the PDP 4, as shown in FIG. 9, the width of the sustain electrode Y4 is smaller than the width of the sustain electrode X4. Therefore, in the electrode pair composed of the sustain electrode X4 and the sustain electrode Y4 arranged side by side with the discharge slit S14 therebetween, the distance from the center of the discharge slit S14 to the reverse slit is different between one side and the other side of the electrode arrangement, and the sustain electrode Y4 Is shorter than the distance on the sustain electrode X4 side.

When driving the PDP 4, the sustain electrode Y4 and the address electrode A4 are used for addressing.
The sustain electrode X4 and the sustain electrode Y4 are used for sustain.

[0049]

According to the first to third aspects of the present invention,
Since an address discharge can be generated in the vicinity of the discharge gap of the sustain electrode pair, wall charges can be efficiently accumulated. Therefore, even if the address period is shortened, wall charges necessary for sustain can be secured,
An error-free high-speed display can be realized. in addition,
Erroneous lighting of an adjacent line can be prevented.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an internal structure of a PDP according to the present invention.

FIG. 2 is a sectional view of a main part of the PDP.

FIG. 3 is a schematic view of an electrode matrix of a PDP.

FIG. 4 is a configuration diagram of a field.

FIG. 5 is a waveform diagram of an applied voltage.

FIG. 6 is a schematic diagram showing transition of wall charges during an address period.

FIG. 7 is a schematic diagram of a sustain electrode structure of a second PDP.

FIG. 8 is a schematic diagram of a sustain electrode structure of a third PDP.

FIG. 9 is a sectional view of a main part of a fourth PDP.

FIG. 10 is a sectional view of a main part showing an internal structure of a conventional PDP.

[Explanation of symbols]

Reference Signs List 4 PDP (three electrode type AC plasma display panel) 114, 214 Glass substrate (substrate) 304 Discharge space A4 Address electrode S14 Discharge slit X4 Sustain electrode (sustain electrode) Y4 Sustain electrode (sustain electrode) 29 Partition wall

Claims (3)

[Claims] A plurality of sustain electrode pairs having a pair of sustain electrodes forming a discharge space and having a pair of sustain electrodes arranged across a discharge slit for surface discharge on one substrate. A plurality of address electrodes intersecting with the sustain electrode pair are arranged on the other substrate in parallel with a reverse slit for preventing a discharge from occurring, and a unit is provided at an intersection of the sustain electrode pair and the address electrode. In a three-electrode type AC plasma display panel having a light emitting region defined, the pair of sustain electrodes have different distances from the center of the discharge slit to the reverse slit, and the sustain electrode and the address electrode on the shorter side of the distance. Wherein an address discharge for selecting the light emission of the unit light emitting region is generated by the method. 2. The device according to claim 1, wherein a strip-shaped partition partitioning the discharge space is provided between the address electrodes on the other substrate, and a plurality of unit light emitting areas are arranged in the discharge space partitioned by the strip-shaped partition. Electrode type AC plasma display panel. 3. A sustain electrode pair comprising a pair of parallel sustain electrodes serving as a discharge pair and an address electrode intersecting with the pair of sustain electrodes, wherein the unit electrode region is defined by the pair of sustain electrodes and the address electrode. An address discharge for selecting light emission of the unit light emitting region is generated between one sustain electrode and the address electrode, and a sustain discharge for maintaining light emission of the unit light emitting region is generated between the sustain electrode pair. In the three-electrode AC plasma display panel, the pair of sustain electrodes has a configuration in which one sustain electrode for generating the address discharge has a narrower electrode width than the other sustain electrode. Electrode type AC plasma display panel.