JP3312601B2 - AC type plasma display panel - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an AC plasma display panel used for a flat panel television, an information display, and the like.
It belongs to the C-type plasma display panel.

[0002]

2. Description of the Related Art A color plasma display is a display in which a phosphor is excited and emitted by ultraviolet rays generated by gas discharge to emit light, and is expected to be applied to a large-screen television or the like. Various types of color plasma displays have been developed. Among them, a reflective AC surface discharge plasma display is superior in terms of luminance, ease of panel manufacture, and the like. FIG. 11 shows a panel structure of a typical reflective AC surface discharge plasma display.
FIG. 11A is a plan view of the rear substrate 200 with a part cut away, FIG. 11B is a cross-sectional structure of the front substrate, and FIG. 11C is a cross-sectional structure of the rear substrate 200. It is. On the front substrate 100 on the display side, a plurality of strip-shaped transparent electrodes 3 and a plurality of narrow bus electrodes 4 are formed in parallel on a glass substrate 1. As the transparent electrode 3, an ITO or tin oxide thin film is used. However, in order to flow a discharge current sufficient for light emission in a large panel, the resistance is effectively reduced by the bus electrode 4 made of a good metal conductor because the electric resistance is large. Have been.
As the bus electrode 4, a thin film of silver, copper, aluminum, chromium, or the like is used. On this, a dielectric layer 8 and a protective layer 9 are formed. The dielectric layer 8 is formed as a transparent insulator layer of about 20 to 40 microns by applying a low-melting glass paste and baking it at a high temperature near 600 degrees. As the protective layer 9, a magnesium oxide thin film having a high secondary electron emission coefficient and excellent sputter resistance is formed by vacuum evaporation or the like.

[0003] After a strip-shaped data electrode 6 is formed on a glass substrate 2, a dielectric layer 11 mainly composed of a low melting point glass is formed.
Is formed. Furthermore, after producing the strip-shaped partition part 17,
The bottom and sides of the groove formed by the partition 17 are red,
Green and blue powdered phosphors 10 are sequentially applied, and the back substrate 200 is completed. The partition wall portion 17 secures a discharge space and also has an effect of preventing discharge crosstalk and bleeding of a luminescent color, and is usually 30 to 100 microns wide and 60 to 200 microns in height. The rear substrate 200 and the front substrate 100 are combined, the periphery of both substrates is sealed with frit glass, heated and evacuated, and finally a discharge gas containing a rare gas as a main component is sealed to complete the panel.

The transparent electrodes 3 with bus electrodes on the front substrate 100 are paired with the surface discharge gap 13 interposed therebetween, and when driven, one is a scanning electrode 21 and the other is a sustaining electrode 22. Various voltage waveforms are applied to the three electrodes to which 6 is added to drive. FIG. 12 shows a simple example of basic driving. Selected scanning electrode 2
In synchronization with the timing at which the negative scanning pulse is sequentially applied to 1, a data pulse having a polarity opposite to that of the scanning pulse is applied to the data electrode 6 in accordance with display data of a cell on the scanning electrode. Thereby, a counter discharge is generated between the scanning electrode 21 and the data electrode. In addition, the counter discharge triggers a surface discharge between the sustain electrode 22 and the scan electrode 21 to complete the address operation. By this address discharge,
Wall charges are formed on the surfaces of the scan electrodes 21 and the sustain electrodes 22. In a cell in which wall charges are formed, a sustain pulse of a surface discharge is generated by a sustain pulse applied between the sustain electrode 22 and the scan electrode 21 during the sustain period. However, a sustain pulse is applied to a cell in which writing is not performed. Also, since there is no superposition effect of the electric field due to the wall charges, no sustain discharge occurs. Light emission display is performed by applying the sustain pulse a predetermined number of times. By repeating such address operation and sustain discharge operation for each subfield, a gray scale display is realized.
Note that in order to improve the addressability, a pre-discharge operation for applying a high voltage to all cells and forcibly discharging the cells before the addressing operation as shown in FIG. 12 is employed.
FIG. 12 shows an example of a driving method in which scanning and sustaining light are separated, but various driving methods such as a driving method in which a scanning pulse and a sustaining pulse are mixed have been proposed.

In such a color plasma display, the improvement of the luminous efficiency as well as the completeness of the display driving operation is very important for higher luminance and lower power consumption, and many improvements in the electrode structure have been proposed. . In particular, the bus electrode 4 is opaque and shields light emitted from the phosphor 10, so that the bus electrode width is reduced to improve light extraction efficiency, or the bus electrode 4 is separated from the surface discharge gap 13. The device is installed at a position where the light emission intensity is weak. As shown in FIG. 13, a structure has been proposed in which a bus electrode 4 is provided alongside a band-shaped transparent electrode 3 via a gap 12 on the opposite side of a surface discharge gap 13 and is discretely connected by a connection portion 5. . By generating the surface discharge only in the transparent electrode 3, most of the light generated due to the presence of the gap 12 can be used, and the efficiency can be improved.

As prior art, (1) Publication number, JP-A-8-315735, (2) Publication number, JP-A-8-250
029 etc. are known.

[0007]

However, in the prior art, in order to widely use an AC type color plasma display such as a home television, it is necessary to adopt a structure for improving the luminous efficiency in order to improve the luminous efficiency. However, there is a problem that the display driving performance is reduced.

The present invention has been made in view of such a problem, and an object of the present invention is to provide an AC-type plasma display panel which realizes high-luminance light emission display and low power consumption by improving luminous efficiency. The point is to provide.

[0009]

The gist of the present invention described in claim 1 is an AC type plasma display panel used for a flat panel television or an information display.
A surface discharge electrode composed of a transparent electrode and a bus electrode formed of a low-resistance metal film, a data electrode extending intersecting with the surface discharge electrode, and a partition part for partitioning an adjacent pixel; A display discharge portion, the bus electrode, and a connection portion for connecting the display discharge portion and the bus electrode, and the surface discharge gap is a pair of substantially plate-shaped displays formed of a transparent conductive film. The bus electrode is provided between the discharge portions, and the bus electrode is electrically connected to the outside of the display discharge portion on the opposite side of the surface discharge gap via the connection portion, and the connection portion is a connection portion and a connection portion. consists of a, the joint provided along the partition wall under the partition wall portion, the bus electrode and the collector
And the connection portion is connected to the display discharge portion, a gap is provided between the display discharge portion and the bus electrode at a portion facing a discharge space, and the partition portion and the display discharge portion are connected to each other. By providing a space between the unit electrodes, a sustain discharge is generated in the display discharge unit, and a sustain discharge is not generated in a portion of the bus electrode.
A bus adjacent to the bus electrode on the glass substrate
A colored insulator between the electrodes or on the upper surface of the bus electrode
Wherein the black layer is formed on the AC plasma display panel. The gist of the present invention described in claim 2 is that the connection portion is provided only on one side of the display discharge portion, and the connection portion with the bus electrode is provided only on one side. Exists in plasma display panels. The gist of the present invention according to claim 3, wherein the connecting portion is connected to a side edge at an intermediate position between the surface discharge gap and the outside of the display discharge portion on the opposite side to the surface discharge gap, and the partition wall is provided. The AC plasma display panel according to claim 1, wherein the surface discharge unit and the bus electrode are electrically connected to the junction provided along a portion of the AC plasma display panel. Exist. The gist of the present invention according to claim 4 is that, between a pair of surface discharge electrodes on a display surface side of a pair of substrates arranged opposite to each other via a discharge space, the pair of substrates is sandwiched between the pair of surface discharge electrodes, A surface discharge gap that extends, a data electrode that extends on the back substrate so as to intersect the direction in which the surface discharge gap extends, and a partition that partitions the discharge space so as to correspond to the data electrode and that extends in the same direction as the data electrode. Wherein the surface discharge electrode comprises a transparent electrode and a bus electrode formed of a low-resistance metal film, wherein the surface discharge electrode is a display discharge unit in which a main light emitting display discharge occurs, the bus electrode, and the display discharge unit. And a connection portion for connecting the bus electrode with the bus electrode, the display discharge portion includes a comb-shaped protrusion formed of a transparent electrode, and the surface discharge gap is a pair of the display discharge portion. Is sandwiched between The bus electrode is formed outside the display discharge unit on the opposite side of the surface discharge gap with a distance from the display discharge unit, and is electrically connected to the display discharge unit through the connection unit. The display discharge portion, the bus electrode, the portion of the interval between the display discharge portion and the bus electrode, the connection portion, and the surface discharge gap are extended uniformly across the data electrode by the dielectric layer and the protective film. The surface of the protective film, which is covered and is in contact with the discharge space, is substantially flat, and is provided on a glass substrate provided with the bus electrode.
Between the bus electrode and an adjacent bus electrode or the bus electrode
That a black layer of colored insulator is formed on the top surface of the
And an AC plasma display characterized by the following .
The gist of the present invention according to claim 5 is that the connection portion includes a bonding portion and a connection portion, the connection portion is connected to the bus electrode, and is provided along the partition wall portion, and the connection portion is The AC type plasma according to claim 4, wherein the AC plasma is connected to a display discharge unit, the connection unit is connected to the connection unit, and the display discharge unit is electrically connected to the bus electrode. Exists on the display panel. Subject matter of the present invention described in claim 6, wherein the connecting portion, the bus electrode and is integrally pattern formed, claim 4 wherein the bus electrode and the display discharge portion, characterized in that it is electrically connected to or 5. The AC plasma display panel according to item 5. The gist of the present invention according to claim 7 is that the connecting portion is connected to a side edge at an intermediate position between the surface discharge gap and the outside of the display discharge portion on the opposite side to the surface discharge gap, and 7. The AC-type plasma display panel according to claim 4 , wherein the panel is connected to the junction provided along the surface, and the surface discharge unit and the bus electrode are electrically connected to each other. Exists. Subject matter of the present invention of claim 8, wherein the claim 4 wherein the data electrode width facing in the vicinity of the bus electrode, characterized in that narrower than the data electrode width facing the transparent electrode serving as the display discharge portion 9. The AC plasma display panel according to any one of claims 1 to 7 , The gist of the present invention according to claim 9 is that the width of the data electrode facing the vicinity of the surface discharge gap end of the transparent electrode of the display discharge unit on the scanning electrode side is equal to the surface discharge gap of the transparent electrode. The AC plasma display panel according to any one of claims 4 to 8 , wherein the width of the data electrode facing the vicinity of the opposite end is wider than the width of the data electrode.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. (Embodiment 1) As shown in FIG. 1, an AC type plasma display panel (hereinafter referred to as AC type PDP) according to Embodiment 1 is connected to glass substrates 1, 2, transparent electrodes 3, and bus electrodes 4. It is roughly composed of a part 5, a data electrode 6, a partition part 17, and a surface discharge gap 13.

In the first embodiment, an ITO thin film is formed on a glass substrate 1 serving as a front substrate 100 by sputtering, and a transparent electrode 3 having a comb-like projection as shown in FIG. 1 is formed by photolithography. I do. The bus electrode 4 is formed on the opposite side of the surface discharge gap 13 in parallel with the transparent electrode 3. At this time, a gap 12 is provided between the transparent electrode 3 and the bus electrode 4. Connection portions 5 are formed on the transparent electrode 3 at regular intervals toward the bus electrode 4, and the transparent electrode 3 and the bus electrode 4 are electrically connected. A pair of the transparent electrode 3 and the bus electrode 4 is paired with the surface discharge gap 13 interposed therebetween, one of which is a scanning electrode 21 and the other is a sustaining electrode 22.
Function as A transparent dielectric layer 8 and a protective layer of magnesium oxide are formed to cover these electrodes. In this embodiment, the pixel size is 1.2 mm pitch, the width of the bus electrode 4 is 70 μm, the gap 12 is 60 μm, and the width of the projection of the transparent electrode 3 is 250 μm. In addition,
The bus electrode 4 extends out of the display section of the panel and is connected to a drive circuit.

The back substrate 200 is basically the same as that described in the conventional example, and the band-shaped data electrode 6 and the partition 17 are formed of four.
It is formed at a pitch of 00 microns, and the red, green, and blue phosphors 10 are applied. The front substrate 100 and the rear substrate 200 are aligned so that the connection portion 5 is located below the partition wall portion 17, assembled and sealed, and then filled with a discharge gas to complete a panel.

In the first embodiment, as a result of applying and driving an appropriate AC sustain discharge voltage pulse between the scan electrode 21 and the sustain electrode 22 of the panel, a luminous efficiency higher by about 10 to 40% than that of the conventional panel is obtained. Was. The sustain discharge was generated using the transparent electrode 3 as a discharge electrode, and it was observed that no sustain discharge occurred in the bus electrode. This is because the surface discharge generated between the transparent electrodes does not transfer to the bus electrode under appropriate maintenance voltage application conditions because of the gap 12 between the bus electrode and the bus electrode. Also, for the panel having the structure of FIG.
Due to the decrease in the electrode area, the luminous efficiency was improved by about 10 to 30% although the luminance itself was reduced. This is because between the partition 17 on which the phosphor 10 is applied and the transparent electrode 3,
It is judged that the inactivation of the excited particles on the surface of the partition wall was reduced by providing the space of 0 μm.

The structure of the electrode, which is the gist of the present invention, will be described again. The electrode on the front substrate side according to the present invention is composed of a display discharge part 51, a connection part 52, a joint part 53, and the bus electrode 4, as shown in FIG. The display discharge unit 51 is an electrode that generates a sustain discharge that directly contributes to light emission, and uses a transparent conductive film. The connecting portion 52 and the joining portion 53 function as the connecting portion 5 and have a function of connecting the display discharge portion 51 to the bus electrode 4 made of a metal film. In order to secure the gap 12 between the display discharge unit 51 and the bus electrode 4, the joint 53 extends under the partition 17 and is connected to the display discharge unit 51 through the connection unit 52. The display discharge section 51 has not only the gap 12 with the bus electrode 4 but also the partition wall section 17 and the partition space 15. The embodiment shown in FIG. 1 includes a display discharge unit 51, a connection unit 52, and a connection unit 53.
Are formed by patterning a transparent conductive film, and the bus electrode 4 is an example in which the bus electrode 4 is formed in a simple band shape using thick film silver. The space 12 between the display discharge portion 51 and the bus electrode 4 and the space between the display discharge portion 51 and the partition 17 are important from the viewpoint of improving efficiency. Above, the effect of improving the luminous efficiency tended to be saturated.

The transparent electrode 3 shown in FIG. 1 is formed into a pattern even though the transparent electrode 3 has a display discharge electrode shape substantially separated from the partition 17 and the bus electrode 4. After that, by measuring the electric resistance at both ends of the panel of the transparent electrode 3, it is possible to inspect whether or not the transparent electrode 3 is electrically short-circuited or disconnected, which is advantageous in improving the panel production yield. Further, since each display discharge section 51 has the connection section 5 on both sides, even if there is a line break in the connection section 5 having a narrow pattern width, a voltage is applied from the other side, so that a point defect is generated. There is also an advantage that hardly occurs.

The AC type PDP according to the first embodiment is configured as described above, and has the following effects. In the electrode structure of the AC type PDP of the present invention, high luminous efficiency can be obtained because the display discharge portion 51 of the transparent electrode 3 is separated from the bus electrode 4 and the partition 17.

In addition, regardless of the shape of the display discharge electrode which is substantially isolated in the discharge cell, the whole transparent electrode can be connected to each other, and the bus electrode 4 is electrically connected to the plurality of connection portions 5. And a dark defect that easily occurs in the isolated electrode structure is less likely to occur. In addition, a continuity test can be performed in the process of the transparent electrode pattern, and the practicality in the process is high.

As a result of applying and driving an appropriate AC sustain discharge voltage pulse between the scan electrode 21 and the sustain electrode 22 of the panel of the first embodiment, a luminous efficiency higher by about 10 to 40% than that of the conventional panel is obtained. Was.

Also in the panel having the structure shown in FIG. 13, although the luminance itself is reduced due to the decrease in the electrode area, the luminous efficiency is improved by about 10 to 30%. This is phosphor 1
It is determined that the space of 40 μm was provided between the partition 17 coated with 0 and the transparent electrode 3, so that the deactivation of excited particles on the surface of the partition was reduced.

After patterning the transparent electrode 3, the transparent electrode 3
By measuring the electrical resistance at both ends of the panel, it is possible to inspect whether or not the transparent electrode 3 has an electrical short circuit or disconnection, which is advantageous in improving the panel production yield.

Further, since each display discharge portion has the connection portions 5 on both sides, even if there is a line break at the connection portion 5 having a narrow pattern width, a voltage is applied from the other side. There is also an advantage that a point defect hardly occurs.

(Embodiment 2) A according to Embodiment 2
The C-type PDP includes an isolated transparent electrode 3 as shown in FIG. The second embodiment corresponds to a case where the connecting portion 52 shown in FIG. 2 is only on one side of the display discharge portion 51. Since the junction 53 with the bus electrode 4 is only on one side, if the electrode pattern has a defect, there is a disadvantage that a dark defect is likely to occur, and it cannot be electrically inspected for a short circuit or disconnection of the transparent electrode 3. Is a disadvantage, but the connecting portion 52
Since the discharge in the above is affected by the partition wall portion 17, the luminous efficiency is low. However, in the second embodiment, since the connecting portion 52 is provided on only one side, the luminous efficiency can be further improved. When the process capability of manufacturing the transparent electrode pattern is high, adopting the transparent electrode shape shown in FIG. 3 is effective in terms of luminous efficiency.

The AC type PDP according to the second embodiment is configured as described above, and thus has the following effects in addition to the effects of the first embodiment. Since the connecting portion 52 is only on one side, the luminous efficiency can be further improved.
When the process capability of manufacturing the transparent electrode pattern is high, adopting the transparent electrode shape shown in FIG. 3 is effective in terms of luminous efficiency.

Further, the position at which the connecting portion 52 is arranged and the material of the connecting portion 52 and the joining portion 53 are not limited to those of the first and second embodiments, and need not be made of a transparent conductive film, and are optional. Therefore, various modifications can be made in implementing the present invention.

(Embodiment 3) AC according to Embodiment 3
In the type PDP, as shown in FIG. 4, a connecting portion 52 serving as the connecting portion 5 and a joining portion 53 are formed as a pattern of the bus electrode 4. In the third embodiment, the bus electrode 4 may not be extended to the connection portion 52 protruding into the discharge cell, but may be only the connection portion 53. The formation of the joining portion 53 and the connecting portion 52 with the bus electrode 4 is an effective method when the transparent electrode 3 is thin and easily broken due to a thin crack or the like. FIG. 5 shows a fourth embodiment in which the connecting portion 52 is disposed at an intermediate position of the display discharge portion 51. FIG. 6 shows a fifth embodiment in which the connecting portion 52 is located at an intermediate position of the display discharge portion 51 and the joining portion 53 below the partition extends from the bus electrode 4. FIG. 7 shows a sixth embodiment in which the connecting portion 52 is located at the surface discharge gap position. In consideration of factors such as the cell design and manufacturing process, or the sheet resistance of the transparent conductive film to be used, the shapes described in the embodiments can be adopted. However, at present, according to the results of trial production evaluation,
The structure of the embodiment of the present invention is such that the patterning is easy, the requirement for alignment accuracy between the transparent electrode 3 and the bus electrode 4 is loose, and the scanning electrode 2
1 and the storage electrode 22 have a small capacitance and are excellent.

In the present invention, it is important that the sustain discharge is not generated at the bus electrode 4 but is generated mainly at the display discharge portion 51 of the transparent electrode 3. When the sustain discharge voltage is increased, the discharge spreads to the bus electrode 4. When the light is spread to the bus electrode 4, the light emission luminance is increased, but the light emission efficiency is reduced. Further, when a cell that emits light only with the transparent electrode 3 and a cell that extends to the bus electrode 4 coexist in the panel, the display quality is significantly impaired because the light emission intensity differs for each cell. When the gap 12 is widened, the transfer of the discharge to the bus electrode 4 is less likely to occur, and the display discharge portion 51 of the transparent electrode 3 is formed.
In this case, the sustain voltage range in which the discharge can be stably maintained can be widened. However, if the gap 12 is widened, the area of the display discharge unit 51 becomes small and the luminance decreases, so it is necessary to select a balanced value. By increasing the thickness of the dielectric layer 8 on the bus electrode, providing the dielectric layer 8 with a low dielectric constant, or reducing the secondary electron emission rate on the upper surface of the bus electrode, by adding a step, It is possible to make it difficult for the discharge to transfer to the bus electrode 4, and in this case, the use range of the sustain discharge voltage can be further widened.

Since the AC PDP according to the third embodiment is configured as described above, it has the following effects in addition to the effects of the first and second embodiments. By forming the joining portion 53 and the connecting portion 52 with the bus electrode 4, the thin transparent electrode 3 is unlikely to be broken due to a thin crack or the like.

Further, the sustain discharge is not generated at the bus electrode 4 but is generated mainly at the display discharge portion 51 of the transparent electrode 3, so that the light emission intensity is equalized for each cell and the display quality is kept high.

(Embodiment 4) A according to Embodiment 4
As shown in FIG. 8, the C-type PDP has a structure in which the space between the bus electrodes is blackened to reduce the external light reflectance of the panel and improve the dark place contrast. The seventh embodiment is a first embodiment. The cross-sectional structure of the front substrate 100 in which the black layer 14 is formed on the panel having the electrode structure described above. The back substrate 200 is the same as in the conventional example and the first embodiment. A transparent electrode 3 and a bus electrode 4 are formed on a glass substrate 1. The bus electrode 4 is formed on the opposite side of the surface discharge gap 13 with an interval from the transparent electrode 3 serving as the display discharge unit 51. The bus electrodes 4 of the adjacent cells are extended in parallel at an interval.

In the embodiment shown in FIG. 8, a black layer 14 is formed so as to cover the upper part of two bus electrodes 4 adjacent to the space 12. The black layer 14 is formed by screen printing a paste mainly composed of an inorganic pigment powder such as a transition metal oxide and a glass powder having a low softening point, or by a photolithography technique as a photosensitive paste. The black layer 14 may be formed so as to cover not only between the bus electrodes but also the entire bus electrode, or may be formed to a part of the bus electrode 4. The bus electrode itself is also formed in a two-layer structure blackened on the display surface side. If the space between the adjacent bus electrodes is blackened, the effect of improving the contrast is almost the same. What is necessary is just to determine in consideration of a margin. In addition, in FIG.
4 is formed after the formation of the bus electrode, it may be formed on the dielectric layer 8 or in the dielectric layer or on the protective film 9 for convenience of the process or the like. May be formed directly on the glass substrate 1 before the formation.

In terms of the effect of improving the contrast, the shape and the position of the black layer 14 are quite arbitrary as described above. However, the effect of forming the black layer 14 so as to cover the upper portion of the bus electrode is as follows. Since the capacitance of the entire insulator layer is reduced, there is an advantage that discharge at the bus electrode 4 hardly occurs. Therefore, the black layer 14 is preferably made of a material having a small dielectric constant. The effect of covering the entire bus electrode also has the effect of reducing the capacitance between the adjacent bus electrodes. As shown in FIG. 8, the entire area between the bus electrode 4 and the adjacent bus electrode has a dielectric constant. Small black layer 1
Most preferably, it is directly covered with 4.

An eighth embodiment of the present invention having an improved data electrode structure will be described. The panel structure of the eighth embodiment is basically the same as the panel of the first embodiment, except for the data electrode shape. FIG. 9 shows the bus electrode 4, the transparent electrode 3, and the data electrode 6 so that the positional relationship can be easily understood. The conventional data electrode 6 has a band shape of the same width, but the data electrode 6 of the present invention has a wide portion 61 having a large width on the transparent electrode and a narrow portion 62 having a small width on the bus electrode. I have.
In this embodiment, the wide portion has a width of 150 microns, and the narrow portion has a width of 50 microns.

When a panel having a uniform data electrode width was driven, instability of the writing operation was observed. In the write operation, first, a counter discharge between the data electrode 6 and the scan electrode 21 is generated.
The discharge is generated even during one period, and the operation is completed when positive and negative wall charges are formed on the scan electrode 21 and the sustain electrode 22. When the opposite discharge is reliably generated between the transparent electrode 3 and the data electrode, a stable address operation is performed.
In the case of a discharge state in which the discharge state occurs between the transparent electrode 3 and the data electrode after the discharge state has occurred between the data electrodes or between the bus electrodes, display defects such as flickers have occurred. Also, in the priming operation, when priming occurs in the bus electrode 4, it is difficult to obtain a good display because it affects the erased state after priming. As described above, the black layer 14 is provided on the bus electrode,
The countermeasure for reducing the surface discharge, which is the sustain discharge, to the bus electrode 4 by reducing the capacitance of the insulator layer on the bus electrode also has the effect of making it difficult for the counter discharge of writing to occur at the bus electrode 4. However, they have the disadvantage that they are insufficient in terms of good write stability and require an additional step of covering with an insulator layer.

Noting that the voltage at which the discharge is generated is affected by the electrode area, in this embodiment, by reducing the width of the data electrode on the bus electrode, a counter discharge during writing in this portion is less likely to occur. However, a stable display was realized by always performing the writing operation between the wide data electrodes on the transparent electrode 3.

It is preferable that the width of the data electrode of the narrow portion 62 is narrower. However, the width cannot be extremely narrow due to manufacturing restrictions.
Desirably, it is less than 0 microns.

Further, as a result of studying the width of the data electrode, as shown in FIG.
It is more preferable to make the data electrode 6 near the end on the surface discharge gap side wide as a wide portion 61 and make the entirety including the vicinity of the end opposite to the surface discharge gap 13 of the transparent electrode 3 serving as the scanning electrode 21 narrower. Stable writing was obtained. This seems to be due to the fact that the address discharge occurs near the surface discharge gap side end. Further, with such a data electrode shape, the capacitance of the data electrode 6 can be reduced, which contributes to a reduction in data power.

The AC-type PDP according to the fourth embodiment is configured as described above, and has the following effects in addition to the effects of the first, second, and third embodiments. Forming the black layer 14 so as to cover the upper portion of the bus electrode also has the advantage that the discharge of the bus electrode 4 is less likely to occur because the capacitance of the entire insulator layer on the bus electrode is reduced.

[0038]

According to the electrode structure of the present invention, since the display discharge portion of the transparent electrode is separated from the bus electrode and the partition, high luminous efficiency can be obtained. Further, regardless of the shape of the display discharge electrode which is almost isolated within the discharge cell, the shape can be such that the entire transparent electrode is connected. Dark defects, which easily occur in the electrode structure, hardly occur.

By positively utilizing the structure of the present invention and blackening the space between the adjacent bus electrodes, the reflectance on the panel surface was reduced and the bright place contrast was improved without substantially impairing the emission luminance.

In addition, the drivability of the panel having the electrode structure of the present invention is improved by devising the shape of the data electrode, and the data power is reduced by reducing the capacitance of the data electrode.

As described above, the present invention contributes to high luminance and low power consumption, which are important factors for the spread of the color AC type plasma display panel.

[Brief description of the drawings]

FIG. 1 is a diagram showing an electrode structure of an AC type plasma display panel according to Embodiment 1 of the present invention.

FIG. 2 is a diagram showing an electrode configuration of FIG. 1;

FIG. 3 is a diagram showing an electrode structure of an AC type plasma display panel according to Embodiment 2 of the present invention.

FIG. 4 is a diagram showing an electrode structure of an AC type plasma display panel according to Embodiment 3 of the present invention.

FIG. 5 is a diagram showing an electrode structure of an AC type plasma display panel according to Embodiment 3 of the present invention.

FIG. 6 is a diagram showing an electrode structure of an AC type plasma display panel according to Embodiment 3 of the present invention.

FIG. 7 is a diagram showing an electrode structure of an AC type plasma display panel according to Embodiment 3 of the present invention.

FIG. 8 is a diagram showing an electrode structure of an AC type plasma display panel according to Embodiment 4 of the present invention.

FIG. 9 is a diagram showing an electrode structure of an AC type plasma display panel according to Embodiment 4 of the present invention.

FIG. 10 is a diagram showing an electrode structure of an AC type plasma display panel according to Embodiment 4 of the present invention.

FIG. 11 is a structural diagram of an AC type plasma display panel showing an example of the prior art.

FIG. 12 is a diagram illustrating an example of a driving waveform in FIG. 11;

FIG. 13 is a view showing an electrode structure of an AC type plasma display panel showing an example of the prior art.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1, 2 Glass substrate 3 Transparent electrode 4 Bus electrode 5 Connection part 6 Data electrode 8 Dielectric layer 9 Protective layer 10 Phosphor 11 Dielectric layer 12 Gap 13 Surface discharge gap 14 Black layer 15 Partition space 17 Partition part 21 Scan electrode 22 Sustain electrode 51 Display discharge part 52 Connecting part 53 Join part 61 Wide part 62 Narrow part 100 Front substrate 200 Rear substrate

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-10-321142 (JP, A) JP-A-8-315735 (JP, A) JP-A-9-237580 (JP, A) JP-A-9-237 167565 (JP, A) JP-A-11-297214 (JP, A) JP-A-10-233171 (JP, A) JP-A-4-36931 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) H01J 11/02 H01J 11/00

Claims (9)

(57) [Claims] 1. An AC plasma display panel used for a flat panel television, an information display, or the like, comprising: a surface discharge electrode including a transparent electrode and a bus electrode formed of a low-resistance metal film; A data electrode extending crossing the electrode; and a partition part partitioning an adjacent pixel, wherein the surface discharge electrode is a connection connecting the display discharge part, the bus electrode, and the display discharge part and the bus electrode. A surface discharge gap is provided between the pair of substantially plate-shaped display discharge portions formed of a transparent conductive film, and the bus electrode is provided on the opposite side to the surface discharge gap. Electrically connected to the outside of the discharge part via the connection part, wherein the connection part comprises a joint part and a connection part, and the joint part is provided along the partition part below the partition part, bus electrode electrically contacts The connection portion is connected to the display discharge portion, a gap is provided between the display discharge portion and the bus electrode at a portion facing a discharge space, and between the partition portion and the display discharge portion electrode. By providing a space, a sustain discharge is generated in the display discharge portion, and no sustain discharge is generated in the portion of the bus electrode.
The bus electrode is provided on a glass substrate provided with the bus electrode.
Between the pole and the adjacent bus electrode, or on the upper surface of the bus electrode
Characterized by the formation of a colored layer of colored insulator
AC type plasma display panel to be. 2. The AC type plasma display panel according to claim 1, wherein the connection portion is provided only on one side of the display discharge portion, and the connection portion with the bus electrode is provided only on one side. 3. The connecting portion is connected to a side edge at an intermediate position between the surface discharge gap and the outside of the display discharge portion opposite to the surface discharge gap, and is provided along the partition. The AC plasma display panel according to claim 1, wherein the AC discharger is connected to the bonding portion, and the surface discharge portion is electrically connected to the bus electrode. 4. A surface discharge gap which is sandwiched between a pair of surface discharge electrodes on the inner surface of the substrate on the display surface side of a pair of substrates disposed opposite to each other via a discharge space and extends in the surface discharge electrode direction; A data electrode extending on the rear substrate in a direction intersecting with a direction in which the surface discharge gap extends, and a partition wall partitioning the discharge space so as to correspond to the data electrode, and a partition extending in the same direction as the data electrode. The electrode includes a transparent electrode and a bus electrode formed of a low-resistance metal film, and the surface discharge electrode includes a display discharge unit in which main light emission display discharge occurs, the bus electrode, the display discharge unit, and the bus electrode. A connection portion for connecting the display discharge portion, the display discharge portion includes a comb-shaped protrusion formed of a transparent electrode, and the surface discharge gap is provided between the protrusions forming a pair with the display discharge portion. The bus electrode The display discharge unit is formed outside the display discharge unit on the opposite side to the surface discharge gap and is spaced from the display discharge unit, is electrically connected to the display discharge unit through the connection unit, and intersects with the data electrode. The display discharge portion, the bus electrode, the portion of the interval between the display discharge portion and the bus electrode, the connection portion, and the surface discharge gap are uniformly covered with a dielectric layer and a protective film, and the discharge is performed. The protective film surface in contact with a space is substantially flat ,
The bus electrode is provided on a glass substrate provided with the bus electrode.
Between the pole and the adjacent bus electrode, or on the upper surface of the bus electrode
Characterized by the formation of a colored layer of colored insulator
AC type plasma display to be. 5. The connecting portion includes a joining portion and a connecting portion, wherein the joining portion is connected to the bus electrode and provided along the partition, and the connecting portion is connected to the display discharge portion. The AC plasma display panel according to claim 4 , wherein the junction and the connection are connected, and the display discharge and the bus electrode are electrically connected. 6. The AC type according to claim 4 , wherein the connection portion is formed integrally with the bus electrode, and the display discharge portion and the bus electrode are electrically connected. Plasma display panel. 7. The connecting portion is connected to a side edge at an intermediate position between the surface discharge gap and the outside of the display discharge portion opposite to the surface discharge gap, and is provided along the partition wall portion. 5. The device according to claim 4 , wherein the surface discharge portion and the bus electrode are electrically connected to a joint portion.
7. The AC-type plasma display panel according to any one of claims 1 to 6 . Wherein said data electrode width facing in the vicinity of the bus electrode, to claim 4, characterized in that narrower than the data electrode width facing the transparent electrode serving as the display discharge portion
8. The AC-type plasma display panel according to any one of 7 . 9. The data electrode width of the display electrode, which is on the scanning electrode side, near the surface discharge gap end of the transparent electrode, is near the end of the transparent electrode opposite to the surface discharge gap. 9. The AC plasma display panel according to claim 4, wherein the width of the data electrode is wider than the width of the data electrode.