JP2000294151A - AC type plasma display device - Google Patents

Abstract

(57) [PROBLEMS] To provide an AC-type plasma display device with high luminous efficiency without greatly increasing an applied voltage for sustaining discharge. SOLUTION: In a plasma display panel, a front substrate 3 and a rear substrate 4 are opposed to each other with a discharge space 2 interposed therebetween, and a first electrode covered with a dielectric layer 5 and a protective film 6 on the front substrate 3. An electrode pair consisting of X and a second electrode Y is arranged, a third electrode A and a partition 10 are arranged on the rear substrate 4, and a distance between the first electrode X and the second electrode Y is d _SS ,
The height d _SA of the discharge space 2 on the center line of the third electrode A satisfies the relationship d _SS > d _SA . In the plasma display panel thus configured, the phosphor 11 is formed in the discharge space 2 so as to cover the third electrode A, and is sandwiched between the first electrode X and the second electrode Y on the protective film 6. The phosphor 11a is formed in the region.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an AC type plasma display device.

[0002]

2. Description of the Related Art FIG. 7 is a sectional view of a main part of a conventional AC plasma display panel. FIG. 7B shows FIG.
It is BB sectional drawing of.

As shown in FIG. 7, a conventional AC type plasma display panel (hereinafter, referred to as a panel) 1 has a glass front substrate 3 and a glass rear substrate 4 opposed to each other with a discharge space 2 interposed therebetween. Have been. On the front substrate 3, an electrode group consisting of a pair of strip-shaped scan electrodes 7 and sustain electrodes 8 covered with a dielectric layer 5 and a protective film 6 is arranged in parallel with each other. The scanning electrode 7 and the sustaining electrode 8 are composed of transparent electrodes 7a, 8a and metal busbars 7b, 8b for increasing conductivity, respectively.

On the rear substrate 4, strip-shaped data electrodes 9 are arranged in parallel with each other in a direction orthogonal to the scanning electrodes 7 and the sustaining electrodes 8, and these data electrodes 9 are separated from each other.
In addition, a strip-shaped partition 10 for forming the discharge space 2 is provided between the data electrodes 9. In addition, a phosphor 11 is formed from above the data electrode 9 to the side surface of the partition wall 10. Further, the discharge space 2 is filled with a mixed gas of xenon (Xe) and at least one of helium (He), neon (Ne), and argon (Ar).

[0005] The panel 1 is designed to view an image display from the front substrate 3 side, and scan electrodes 7 in the discharge space 2.
The fluorescent material 11 is excited by ultraviolet rays generated by a discharge between the fluorescent material 11 and the sustain electrode 8, and the visible light from the fluorescent material 11 is used for display light emission.

Next, a method of displaying image data on the conventional panel 1 will be described. As a conventional method of driving a panel, one field period is divided into a plurality of subfields having a weight of a light emission period based on a binary system, and gradation display is performed by a combination of subfields to emit light. Each subfield includes an initialization period, an address period, and a sustain period.

In order to display image data, different signal waveforms are applied to each electrode during the initialization period, the address period, and the sustain period. During the initialization period, for example,
A pulse voltage having a positive polarity with respect to the sustain electrode 8 and the data electrode 9 is applied to all the scan electrodes 7, and wall charges are accumulated on the protective film 6 and the phosphor 11.

In the address period, scanning is performed by sequentially applying a negative pulse to all the scanning electrodes 7. When there is display data, when a positive data pulse is applied to the data electrode 9 while the scan electrode 7 is being scanned, discharge occurs between the scan electrode 7 and the data electrode 9,
Wall charges are formed on the surface of the protective film 6 on the scanning electrode 7.

In the subsequent sustain period, the scanning electrode 7 is kept for a certain period.
And a voltage sufficient to maintain the discharge between sustain electrode 8. As a result, discharge plasma is generated between the scan electrode 7 and the sustain electrode 8, and the phosphor 11 is excited and emits light for a certain period. In the discharge space where no data pulse is applied during the address period, no discharge occurs and no excitation light emission of the phosphor 11 occurs.

In such a conventional panel 1, the distance (inter-electrode distance) d between the scanning electrode 7 and the sustain electrode 8 is set close to a value at which a minimum discharge voltage determined by Paschen's law is obtained. This is to reduce the external sustain voltage _VSUS applied between the scan electrode 7 and the sustain electrode 8 during the sustain period. That is, the discharge starting voltage between scan electrode 7 and sustain electrode 8 is Vf _SS , and the sum of the wall voltage of dielectric layer 5 on scan electrode 7 and the wall voltage of dielectric layer 5 on sustain electrode 8 is When Vw _SS is set, the voltage applied to the discharge space is V
_{Since SUS} + Vw _SS , Vf _SS <V _SUS + Vw _SS (1) must be satisfied in order to maintain the discharge between the scan electrode 7 and the sustain electrode 8. By designing the panel so that Vf _SS is minimized, discharge can be maintained at a lower external sustain voltage _VSUS . The lower the external sustain voltage _VSUS is, the easier the circuit design is, and the loss due to the reactive power can be reduced.

At present, in the panel being manufactured, the total pressure of the filled gas is about 50 to 60 kPa, and the distance d between the electrodes is 80 to 60 kPa.
At 100 μm, V _SUS is minimal, and V _SUS = 180
~ 200V is obtained. In this case, it is known that the luminous efficiency is highest when the partial pressure of xenon gas is 5 to 10%.

[0012]

However, the conventional panel has a problem that the luminous efficiency is significantly lower than that of a display device such as a CRT. For example, in the above-described panel in which the distance d between the electrodes is 80 to 100 μm, the luminous efficiency is 1 l.
m / W and about 1/5 of CRT.

It is generally known that the longer the distance between the electrodes causing discharge, the higher the luminous efficiency.
When the distance between the scan electrode 7 and the sustain electrode 8 is increased, the discharge start voltage Vf _SS also sharply rises according to the Paschen curve, and there is a problem that driving becomes difficult.

SUMMARY OF THE INVENTION The present invention has been made to solve such problems, and an object of the present invention is to provide an AC-type plasma display device having high luminous efficiency without greatly increasing an applied voltage for sustaining discharge. I do.

[0015]

In order to solve the above problems, an AC type plasma display device according to the present invention has the following configuration. That is, in the AC plasma display device, a first substrate in which a first electrode and a second electrode covered with a dielectric layer are formed in parallel with each other, and a third electrode in a direction orthogonal to the first electrode. A second substrate facing the first electrode, a first phosphor on the third electrode, and a first electrode on the dielectric layer facing the first phosphor. A second phosphor is provided on at least a part of a region sandwiched between the two electrodes. At this time, the first
The distance between the electrode and the second electrode is set larger than the height of the discharge space on the center line of the third electrode. In the sustain period, a sustain pulse voltage is alternately applied to the first electrode and the second electrode to cause a discharge between the first electrode or the second electrode and the third electrode. A discharge is induced between the electrodes.

According to this configuration, the distance between the electrodes at which the sustain discharge occurs can be increased without greatly increasing the discharge sustain voltage, and an AC plasma display device with a significantly improved luminous efficiency can be obtained.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of an AC type plasma display panel according to the present invention will be described in detail with reference to the accompanying drawings.

(First Embodiment) FIG. 1 is a sectional view of a main part of an AC type plasma display panel (hereinafter, referred to as "panel") according to a first embodiment of the present invention. FIG. 1 (b)
FIG. 2 is a sectional view taken along line CC of FIG.

As shown in FIG. 1, a panel 12 according to a first embodiment of the present invention has a front substrate 3 made of glass and a rear substrate 4 made of glass, which are arranged opposite to each other with a discharge space 2 interposed therebetween. I have. On the front substrate 3, a plurality of electrode pairs each including a strip-shaped first electrode X and a second electrode Y covered with a first dielectric layer including a dielectric layer 5 and a protective film 6 are arranged. As the protective film 6, a material having a high secondary electron emission coefficient such as magnesium oxide (MgO) is used. Further, a phosphor 11a is formed on the protective film 6 in a region sandwiched between the first electrode X and the second electrode Y so as not to cover the surface of the protective film 6 on the first electrode X and the second electrode Y. ing.

A first electrode X and a second electrode X
A plurality of strip-shaped third electrodes A are arranged in a direction orthogonal to the electrodes Y, and the strip-shaped partition walls 10 for isolating the third electrodes A and forming the discharge space 2 are formed by the third electrodes A. It is provided between. Further, a fluorescent material 11 as a second dielectric layer is formed from the third electrode A to the side surface of the partition wall 10. Further, He, Ne, Ar
Among them, a mixed gas of at least one of them and Xe is sealed. One discharge cell is formed at the intersection of one first electrode X and one second electrode Y and one third electrode A. Then, red, green and blue phosphors are respectively formed, and one pixel is constituted by three discharge cells adjacent to each other.

The panel 12 is adapted to view an image display from the front substrate 3 side which is the display surface side.
The phosphor 11 is excited by ultraviolet rays generated by the discharge in the inside, and visible light generated from the phosphor 11 is used for display light emission.

In the panel of the present embodiment, the distance between the first electrode X and the second electrode Y (hereinafter referred to as “main discharge gap”) is d _SS , and the distance between the phosphor 11 on the center line of the third electrode A is set. The distance between the surface and the surface of the protective film 6, ie, the third
When the height of the discharge space 2 on the center line of the electrode A (hereinafter referred to as “sub-discharge gap”) is d _SA , d _SS > d
Set as _SA . The sustain discharge space is defined as the first electrode X
The address discharge space refers to a discharge space between the third electrode A and the first electrode X or the second electrode Y. Here, the discharge starting voltage between the electrodes is defined as follows. Vf _SS : discharge starting voltage between the first electrode X and the second electrode Y Vf _SA : discharge starting voltage between the first electrode X and the third electrode A when the first electrode X is a cathode, or The discharge starting voltage Vf _AS between the second electrode Y and the third electrode A when the second electrode Y is a cathode: the voltage between the first electrode X and the third electrode A when the third electrode A is the cathode discharge starting voltage Vf _SSA between the second electrode Y and the third electrode a when the discharge start voltage, or the third electrode a and a cathode between: between the first electrode X and the third electrode a or, Second
A discharge starting voltage between the first electrode X and the second electrode Y when a discharge exists between the electrode Y and the third electrode A

The discharge start voltage Vf _SS is the same as the discharge start voltage between the scan electrode 7 and the sustain electrode 8 in the conventional panel. However, in the present embodiment, the main discharge gap is enlarged, This value is larger than the discharge starting voltage between the scan electrode 7 and the sustain electrode 8 in the panel. The discharge start voltage Vf _SA and the discharge start voltage Vf _AS are discharge start voltages when the polarities of the discharges are opposite to each other, and Vf _SA is the discharge when the protective film 6 having a high secondary electron emission coefficient is on the cathode side. Since Vf _AS is the firing voltage when the fluorescent material whose secondary electron emission coefficient is considerably lower than that of the protective film 6 on the cathode side is the starting voltage, the relationship of Vf _SA ≪Vf _AS There is. Further, if a discharge has previously occurred between the first electrode X and the third electrode A or between the second electrode Y and the third electrode A, a large amount of discharge will occur in the discharge space where the discharge has occurred. Since the charge exists, the discharge starting voltage between the first electrode X and the second electrode Y decreases, and Vf _SSA ≪Vf _SS .

Next, a method for displaying image data on the panel 12 of the present embodiment will be described.

As a method of driving the panel 12 of this embodiment, one field period is divided into a plurality of subfields having a weight of a light emission period based on a binary system, and gradation display is performed by a combination of subfields to emit light. I do. Each subfield includes an initialization period, an address period, and a sustain period.

In order to display image data, different signal waveforms are applied to the electrodes during the initialization period, the address period, and the sustain period. In the initialization period, for example, a pulse voltage of positive polarity with respect to the second electrode Y and the third electrode A is applied to all the first electrodes X, and wall charges are accumulated on the protective film 6 and the phosphor 11. . In the address period, scanning is performed by sequentially applying a negative pulse to all the first electrodes X. If there is display data, the first electrode X
When a positive data pulse is applied to the third electrode A during the scanning, a discharge occurs between the third electrode A and the first electrode X, and a wall is formed on the surface of the protective film 6 on the first electrode X. An electric charge is formed.

A method of driving the panel during the subsequent sustain period will be described with reference to FIGS.

FIG. 2A shows a voltage waveform Vx (t) applied to the first electrode X, and FIG. 2B shows a voltage waveform Vy (t) applied to the second electrode Y. c) is the third electrode A
Is a voltage waveform Va (t) to be applied to. Vx (t) and Vy (t) are sustain pulse voltages having an amplitude of V _SUS (V), and Va (t) is 0V.

In FIG. 3A, the solid line represents the voltage waveform Vx (t) -Vy (t) of the first electrode X as viewed from the second electrode Y. The broken line indicates the wall voltage between the first electrode X and the second electrode Y, and the wall voltage accumulated in the protective film 6 on the first electrode X and the wall voltage between the first electrode X and the second electrode Y. This is the sum with the accumulated wall voltage. In FIG. 3B, the solid line is the third line.
Voltage waveform Vx (t) -Va of first electrode X viewed from electrode A
(T). The broken line represents the wall voltage between the first electrode X and the third electrode A, and the wall voltage accumulated in the protective film 6 on the first electrode X and the phosphor 11 on the third electrode A. This is the sum with the accumulated wall voltage. In FIG. 3C,
The solid line is the voltage waveform Vy of the second electrode Y viewed from the third electrode A.
(T) -Va (t) is represented by a solid line. The broken line represents the wall voltage between the second electrode Y and the third electrode A, and the wall voltage accumulated in the protective film 6 on the second electrode Y and the third voltage.
This is the sum with the wall voltage accumulated in the phosphor 11 on the electrode A.

These wall voltages are generated by the wall charges accumulated on the protective film 6 or the phosphor 11 depending on the case. The polarity of the wall voltage is set such that the difference between the applied voltage and the wall voltage represents the voltage applied to the discharge space between the respective electrodes.

Here, the magnitude of the wall voltage accumulated by the generated discharge is assumed to be substantially the same as the voltage applied from the outside. That is, as shown in FIG. 3A, the wall voltage Vw _SS (V) between the first electrode X and the second electrode Y immediately before the time t ₁ and immediately before the time t _3.
Is substantially the same as the external sustain voltage V _SUS (V). Further, as shown in FIGS. 3B and 3C, the wall voltage between the first electrode X and the third electrode A immediately before the time t ₁ and the second electrode Y immediately before the time t _3. And the third electrode A have substantially the same magnitude of the wall voltage V as the wall voltage.
a w _SA (V), the wall voltage Vw _SA (V) is substantially the same size as the external sustain voltage V _SUS (V). Here, the immediately preceding time t _1, t _3, from the time t _1, t _3, it refers to the time earlier by sufficiently small time Δt compared to time t ₃ -t _1.

In this embodiment, when the panel is driven, an external voltage is applied so as to satisfy the following relationship: Vf _SA <Vw _SA <Vf _AS (2) Vf _SSA <V _SUS + Vw _SS <Vf _SS (3) The value of the external sustain voltage _VSUS is set. Where Vw _SS ≒ V _SUS ,
Because it is Vw _SA ≒ V _SUS, a _{Vf SA <V SUS <Vf AS} (4) Vf SSA / 2 <V SUS <Vf SS / 2 (5). Next, the operation of the panel during the sustain period will be described with reference to FIG.

First, immediately after time t ₁ (that is, time t ₁ +
Δt), in the discharge space between the first electrode X and the third electrode A, Vw
The voltage of _SA (V) is applied. Therefore, from equation (2),
Discharge starts between the first electrode X and the third electrode A. On the other hand, a voltage of about V _SUS (V) is applied to the discharge space between the second electrode Y and the third electrode A with the third electrode A as a negative polarity, that is, as a cathode. Therefore, from the equation (4), the second electrode Y
Discharge does not start between the first electrode A and the third electrode A.

When a discharge starts between the first electrode X and the third electrode A, this discharge causes a discharge starting voltage between the first electrode X and the second electrode Y to drop to Vf _SSA (V). The voltage applied to the discharge space between the first electrode X and the second electrode Y is V _SUS + Vw _SS (V), and from equation (3), the discharge between the first electrode X and the second electrode Y is Start. As a result, the display light emission occurs because the wall voltage is formed so as to cancel the potential of the discharge space, a discharge between the time t ₂ and the first electrode X and the second electrode Y is stopped.

Next, at time t ₃ , the polarity of the voltage applied to the first electrode X and the second electrode Y is inverted. As a result, the first electrode X and the second electrode Y are replaced with each other for a time t.
Through a process similar to that from time ₁ to time t ₃ , a discharge is formed between the first electrode X and the second electrode Y, and one cycle of the sustaining operation from time t ₁ to time t ₄ is completed. I do.

By repeating the above operation, display discharge can be maintained at a relatively low voltage for a panel having a large main discharge gap d _SS .

Next, when driving the panel of this embodiment,
The applied voltage in the sustain period in the case of FIG.
explain. In FIG. 4, the horizontal axis represents the main discharge gap d._SSAnd the vertical axis
Voltage. Discharge starting voltage Vf_SSIs relatively small
Main discharge gap d_SSSo-called Pachet with minimal value at
Curve. Further, the discharge starting voltage Vf_SSAIs open
Starting voltage Vf_SSIs almost the same shape as
Voltage Vf_SSLower than. On the other hand, the discharge starting voltage Vf
_ASAnd the discharge starting voltage Vf_SAIs the main discharge gap d_SSDepend on
It does not exist and becomes an almost horizontal straight line. Note that d_SS= D_SAIn
And not necessarily Vf_SS= Vf_SANot necessarily. this
Is the electric field distribution in the sustain discharge space and the
This is because the electric field distribution is different. In the example shown in FIG.
d_SS= D _SAAt the time of Vf_SS> Vf_SAAnd

The panel of this embodiment is operated in the region D satisfying the equations (4) and (5) during the sustain period. As a result, even when the main discharge gap d _SS is made larger than the conventional example as d _SS > d _SA , the sustain discharge can be induced by the discharge generated in the address discharge space, so that the luminous efficiency is greatly increased. . In addition, the phosphor 11a is formed on the protective film 6 in the region above the discharge space 2 caused by increasing the distance between the first electrode X and the second electrode Y.
Is provided, the light emitting area is increased, and the light emitting efficiency is further improved. Further, the discharge can be maintained at a relatively low externally applied voltage despite the increase in the main discharge gap d _SS . Further, when the main discharge gap d _SS to be Vf _SSA / 2 = Vf _SA and d _0, by setting d _SS ≦ d _0, the maximum sustaining voltage of the conventional panel the minimum value of the external sustain voltage V _SUS (〜V _SA ), so that the luminous efficiency can be improved without imposing a large load on the drive circuit.

On the other hand, in the conventional panel, for example, d _SA =
It was designed such that the relationship between the electrodes is d _SS <d _SA such that 130 to 150 μm and d _SS = 80 to 100 μm. In the sustain period when such a conventional panel is driven, an external sustain voltage _VSUS that satisfies Vw _SA <Vf _SA (6) is applied in addition to the condition of Expression (1). Therefore, in the sustain period, Vw _SS ≒ V _SUS , Vw _SA ≒ V
_{If SUS} is used, the conventional panel is operated in a region E (see FIG. 4) satisfying the expressions (1) and (6),
No discharge occurred in the address discharge space.

Next, an example of the panel design parameters according to the present embodiment is shown in Table 1.

[Table 1] In this panel, discharge start voltages are as follows: Vf _SS = 700 V Vf _SA = 250 V Vf _AS = 350 V Vf _SSA = 450 V, V _SUS = 270 V, t ₃ −t ₁ = t ₄ −t ₃ = 2.
By setting it to 5 μs, stable panel driving could be performed. In the panel of the present embodiment, the main discharge gap d _SS is 400 μm, which is about four times larger than the main discharge gap (80 to 100 μm) of the conventional panel. Therefore, when the conventional driving method is used,
The sustain voltage becomes extremely large at about 400 V or more, and a stable sustain discharge cannot be performed. However, as described above, the discharge generated in the address discharge space induces a discharge in the sustain discharge space, thereby reducing the voltage. A stable sustain discharge can be performed without significantly increasing the discharge. Further, in this panel, a luminous efficiency of 2 lm / W or more could be obtained. The luminous efficiency of the conventional panel is about 1 l
Because of m / W, the panel according to the present embodiment has almost twice the luminous efficiency as compared with the conventional panel.

As described above, in the present embodiment, since the main discharge gap can be increased, it is possible to obtain an AC type plasma display device having high luminous efficiency and suppressing an increase in driving voltage.

(Second Embodiment) Next, a second embodiment of the present invention will be described with reference to FIG. As shown in FIG. 5, the panel according to the second embodiment of the present invention has basically the same configuration as the panel according to the first embodiment shown in FIG. The difference is that the first electrode X and the second electrode Y are each made of ITO.
(Indium Tin Oxide) and the like, and metal buses Xb and Yb made of silver or the like.

In the second embodiment, since the width of the first electrode X and the width of the second electrode Y can be increased without lowering the aperture ratio, the discharge current can be increased and the luminance can be improved. Further, since the transparent electrode generally has a high resistance value, the conductivity is enhanced by providing a metal bus.

As described above, in the second embodiment, it is possible to obtain an AC-type plasma display device which has high luminous efficiency, can suppress an increase in driving voltage, and has high luminous luminance.

In the above-described embodiment, an AC type plasma display panel which performs so-called address-sustain separation type driving in which an address period and a sustain period are separated from each other has been described. However, an AC type plasma display using another addressing method is described. The same effect can be obtained in a panel. The applied voltage waveforms in the initialization period and the address period do not need to be the same as those in the present embodiment, and may be any as long as wall charges are selectively formed according to the presence or absence of image data.

(Third Embodiment) Next, a third embodiment of the present invention will be described with reference to FIG. In FIG. 1, the phosphor 11a is provided in a region formed between the first electrode X and the second electrode Y constituting the same cell. However, in the present embodiment, as shown in FIG. Regardless of the first electrode X and the second electrode X
In the region formed between the electrodes Y,
A phosphor 11b is provided. This further increases the area of the phosphor, so that the luminous efficiency can be improved.

Although FIG. 6 shows an example in which the invention is applied to the panel of the first embodiment, the invention can be similarly applied to the second embodiment.

[0048]

As described above, according to the present invention, in a plasma display device in which the distance between the electrodes is increased and the luminous efficiency is improved, the space in the discharge space caused by the increase in the distance between the electrodes becomes fluorescent. By having a body,
The light emitting area can be increased, and the light emitting efficiency can be further improved.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a main part of an AC plasma display panel according to a first embodiment of the present invention.

FIG. 2 is a diagram showing a sustain voltage waveform of the AC plasma display panel according to the first embodiment of the present invention.

FIG. 3 is a diagram showing a voltage waveform between electrodes and a wall voltage waveform of the AC plasma display panel according to the first embodiment of the present invention.

FIG. 4 is a diagram for explaining an operating voltage in a sustain period of the AC plasma display panel according to the present invention.

FIG. 5 is a sectional view of a main part of an AC plasma display panel according to a second embodiment of the present invention.

FIG. 6 is a sectional view of a main part of an AC type plasma display panel according to a third embodiment of the present invention.

FIG. 7 is a cross-sectional view of a main part of a conventional AC plasma display panel.

[Explanation of symbols]

 2 Discharge space 3 Front substrate 4 Back substrate 5 Dielectric layer 6 Protective film 10 Partition 11, 11a, 11b Phosphor 12 Panel X First electrode Y Second electrode A Third electrode

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Yoshihisa Oe 1006 Kadoma Kadoma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. Terms (reference) 5C040 FA01 FA04 GB03 GB14 GC11 GG01 GG02 GG03 GG04 LA18 5C080 AA05 BB05 DD01 DD13 FF02 HH04 KK02

Claims (7)

[Claims] A first electrode and a second electrode covered with a dielectric layer.
A first substrate having electrodes formed in parallel with each other and a second substrate having third electrodes formed in a direction perpendicular to the first electrodes are disposed to face each other with a discharge space interposed therebetween. A first phosphor is provided thereon, and a second phosphor is provided on at least a part of a region between the first electrode and the second electrode on the dielectric layer so as to face the first phosphor. A phosphor is provided, and a distance between the first electrode and the second electrode is set to be greater than a height of the discharge space on a center line of the third electrode.
A sustain pulse voltage is alternately applied to the electrode and the second electrode to cause a discharge between the first electrode or the second electrode and the third electrode, so that the first electrode and the second electrode are discharged. A characterized by inducing a discharge between
C-type plasma display device. 2. The method according to claim 1, wherein an amplitude of said sustain pulse voltage is equal to said first pulse voltage.
When a discharge starting voltage between the first electrode and the third electrode when the electrode is a cathode, and a discharge is present between the first electrode and the third electrode, 2. The AC type plasma display device according to claim 1, wherein the discharge start voltage between the first electrode and the second electrode is set to be larger than one half of the discharge start voltage. 3. An amplitude of said sustain pulse voltage is equal to said second pulse voltage.
When the discharge starting voltage between the second electrode and the third electrode when the electrode is a cathode, and when a discharge is present between the second electrode and the third electrode, 3. The AC type plasma display device according to claim 2, wherein a discharge starting voltage between the first electrode and the second electrode is set to be more than one half. 4. An amplitude of the sustain pulse voltage is equal to the first
The AC plasma display device according to claim 2 or 3, wherein the discharge start voltage between the electrode and the second electrode is set to be less than half. 5. The method according to claim 1, wherein said sustain pulse voltage has an amplitude of said third pulse voltage.
The AC according to any one of claims 2 to 4, wherein a discharge starting voltage between the first electrode and the third electrode when the electrode is a cathode is set to be lower than the discharge start voltage. Type plasma display device. 6. The method according to claim 6, wherein an amplitude of said sustain pulse voltage is equal to said third pulse voltage.
The AC according to any one of claims 3 to 5, wherein a discharge starting voltage between the second electrode and the third electrode when the electrode is a cathode is set lower than the discharge start voltage. Type plasma display device. 7. The device according to claim 1, wherein the first electrode and the second electrode are constituted by a metal bus and a transparent electrode.
An AC-type plasma display device according to claim 6.