JP4258351B2 - Plasma display panel - Google Patents

Description

  The present invention relates to a plasma display panel used for a wall-mounted television, a large monitor and the like.

  A plasma display panel (hereinafter abbreviated as PDP or panel) is a display device with excellent visibility characterized by a large screen, a thin shape, and a light weight. A typical AC surface discharge type panel as a PDP has a large number of discharge cells formed between a front plate and a back plate arranged to face each other. The front plate is formed with a plurality of pairs of display electrodes composed of scan electrodes and sustain electrodes on the front glass substrate in parallel with each other, and a dielectric layer and a protective layer are formed so as to cover the display electrodes. The back plate has a plurality of parallel data electrodes on the back glass substrate, a dielectric layer so as to cover them, and a plurality of partition walls formed in parallel to the data electrodes on each of the dielectric layers. A phosphor layer is formed on the side surface of the partition wall. The front plate and the back plate are opposed and sealed so that the display electrode and the data electrode cross three-dimensionally, and a discharge gas is sealed in the internal discharge space. In the panel having such a configuration, ultraviolet light is generated by gas discharge in each discharge cell, and phosphors of RGB colors are excited and emitted by the ultraviolet light to perform color display.

  As a method of driving the panel, a subfield method, that is, a method of performing gradation display by combining subfields to emit light after dividing one field period into a plurality of subfields. Here, each subfield has an initialization period, an address period, and a sustain period.

  In the initializing period, initializing discharge is simultaneously performed in all the discharge cells, the history of wall charges for the individual individual discharge cells is erased, and wall charges necessary for the subsequent address operation are formed. In addition, it has a function of generating priming (priming for discharge = excited particles) for reducing discharge delay and generating address discharge stably. In the address period, a scan pulse is sequentially applied to the scan electrodes, an address pulse corresponding to an image signal to be displayed is applied to the data electrodes, and an address discharge is selectively generated between the scan electrodes and the data electrodes. Selective wall charge formation is performed. In the subsequent sustain period, a predetermined number of sustain pulses are applied between the scan electrodes and the sustain electrodes, and the discharge cells in which the wall charges are formed by the address discharge are selectively discharged to emit light.

  Thus, in order to display an image correctly, it is important to reliably perform selective address discharge in the address period. However, due to restrictions on the circuit configuration, a high voltage cannot be used for the address pulse, There are many factors that increase the discharge delay with respect to the address discharge, such as the fact that the phosphor layer formed on the layer makes it difficult for the discharge to occur. Therefore, priming for generating the address discharge stably is very important.

  However, the priming caused by the discharge decreases rapidly with time. Therefore, in the above-described panel driving method, the priming generated by the initialization discharge is insufficient for the address discharge after a long time has elapsed since the initialization discharge, the discharge delay becomes large, and the address operation becomes unstable, causing the image to become unstable. There was a problem that display quality deteriorated. Alternatively, there is a problem in that the writing time is set long in order to perform the writing operation stably, and as a result, the time spent in the writing period becomes too long.

In order to solve these problems, a panel and a driving method thereof have been proposed in which priming is generated using an auxiliary discharge cell formed by providing an auxiliary discharge electrode on the front plate of the panel to reduce the discharge delay (for example, Patent Document 1).
JP 2002-297091 A

  However, in the above-mentioned panel, since the individual auxiliary discharge cells are relatively large, the distance between the main discharge cells for image display cannot be reduced, and as a result, there is a problem that high definition is difficult. It was.

  The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a plasma display panel that can perform a writing operation stably and at high speed and can achieve high definition.

In order to solve the above-described problem, the plasma display panel of the present invention has two scanning electrodes and two sustain electrodes alternately arranged in parallel with each other, each having a transparent portion that transmits visible light and an opaque portion that does not transmit visible light. And a second substrate that is disposed opposite to the first substrate with a discharge space in between and a data electrode is disposed in a direction intersecting the scan electrode and the sustain electrode. The second substrate partitions a main discharge cell composed of the scan electrode, the sustain electrode, and the data electrode, and is provided so as to generate a gap between adjacent main discharge cell rows. When, two scanning electrodes the scanning electrodes in parallel with the data electrodes and electrically insulated from the gap portions occurring on the side of the adjacent arranged and scan electrodes of the first substrate of the gap portion And a priming electrode for performing priming discharge between, and the partition wall, and the transparent portion and the discharge gap portion made of those transparent portion and the sustain electrodes of said scanning electrodes a discharge space of the main discharge cells The space between the two sustaining electrodes is adjacent to the side where the two sustain electrodes are adjacent to each other, and the space between the two sustaining electrodes is adjacent to the side where the two scanning electrodes are adjacent. And With this configuration, it is possible to provide a plasma display panel that can perform a writing operation stably and at high speed, and can achieve high definition and has high luminous efficiency.

Further , the distance between the main discharge cells can be further reduced by making the gap between the two sustain electrodes adjacent to each other closer than the gap between the two scan electrodes adjacent to each other. Can do.

  According to the present invention, it is possible to provide a plasma display panel that can perform a writing operation stably and at a high speed, and can achieve high definition and high luminous efficiency.

  Hereinafter, a plasma display panel according to an embodiment of the present invention will be described with reference to the drawings.

(Embodiment)
FIG. 1 is an exploded perspective view showing a structure of a plasma display panel according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view of the panel. A front substrate 21 made of glass as a first substrate and a rear substrate 31 as a second substrate are arranged opposite to each other with a discharge space interposed therebetween, and a mixed gas of neon and xenon that emits ultraviolet rays by discharge is emitted into the discharge space. It is enclosed.

  On the front substrate 21, a plurality of display electrode pairs composed of the scan electrodes 22 and the sustain electrodes 23 are formed in parallel to each other. At this time, the scan electrodes 22 and the sustain electrodes 23 are alternately arranged two by two so as to be a sustain electrode 23 -a scan electrode 22 -a scan electrode 22 -a sustain electrode 23-. The scan electrode 22 and the sustain electrode 23 are respectively composed of transparent electrodes 22a and 23a and metal bus bars 22b and 23b formed on the transparent electrodes 22a and 23a. The metal bus bars 22b and 23b are opaque and do not transmit visible light. The portion of the transparent electrodes 22a and 23a where the metal bus bars 22b and 23b are not formed is a transparent portion that transmits visible light. A light absorption layer 28 made of a black material is provided between scan electrode 22 and scan electrode 22 and between sustain electrode 23 and sustain electrode 23. Of the scanning electrodes 22, the protruding portion 22 b ′ of the metal bus 22 b of one scanning electrode 22 is formed to protrude onto the light absorption layer 28. A dielectric layer 24 and a protective layer 25 are formed so as to cover the scan electrode 22, the sustain electrode 23, and the light absorption layer 28.

  On the back substrate 31, a plurality of data electrodes 32 are formed in parallel to each other in a direction crossing the scan electrodes 22 and the sustain electrodes 23, and a dielectric layer 33 a is formed so as to cover the data electrodes 32. A plurality of priming electrodes 36 are formed on the dielectric layer 33 a in parallel with the scanning electrodes 22. The dielectric layer 33 a insulates between the data electrode 32 and the priming electrode 36. A dielectric layer 33b is formed so as to cover the priming electrode 36, and a partition wall 34 for partitioning the main discharge cell 40 is further formed thereon.

  The partition wall 34 includes a vertical wall portion 34 a that extends in a direction parallel to the data electrode 32, and a horizontal wall portion 34 b that forms the main discharge cell 40 and forms a gap portion 41 between the main discharge cells 40. As a result, the barrier ribs 34 form a main discharge cell row in which a plurality of main discharge cells 40 are connected along a display electrode pair including a pair of scan electrodes 22 and sustain electrodes 23, and a gap is formed between adjacent main discharge cell rows. Part 41 is produced. A priming electrode 36 is formed in the gap 41 where the two scanning electrodes 22 are adjacent to each other in the gap 41, and this gap 41 serves as a priming discharge cell 41a. In other words, every other gap portion 41 is a priming discharge cell 41 a having the priming electrodes 36 every other gap portion 41.

  A phosphor layer 35 is provided on the surface of the dielectric layer 33 b corresponding to the main discharge cells 40 partitioned by the barrier ribs 34 and on the side surfaces of the barrier ribs 34. In FIG. 1, the phosphor layer 35 is not formed on the gap 41 side, but the phosphor layer 35 may be formed.

  When the front substrate 21 and the rear substrate 31 are arranged to face each other and sealed, a protruding portion 22b ′ protruding on the light absorption layer 28 among the metal bus bars 22b of the scanning electrode 22 formed on the front substrate 21, and the rear substrate Alignment is performed so as to perform priming discharge with the priming electrode 36 formed on the electrode 31.

  In the above description, the dielectric layer 33b is formed so as to cover the priming electrode 36. However, the dielectric layer 33b may not be formed.

  Next, details of the partition wall 34 will be described. FIG. 3 is a cross-sectional view for showing dimensions of a gap portion of the panel in the embodiment of the present invention. However, in order to make the drawing easier to see, the dielectric layer, the phosphor layer, and the like are omitted. A gap (hereinafter abbreviated as a gap between discharge cells) Gb between two adjacent sustain electrodes 23 on the gap 41b side is provided so that adjacent main discharge cells 40 do not interfere with each other. The width Sb of the gap 41b is not necessarily required for image display, but is provided to increase the exhaust conductance in the panel and shorten the exhaust process during panel manufacture.

  In FIG. 3, the horizontal wall 34b is located below the metal bus 23b, and the transparent portion of the scan electrode 22, the transparent portion of the sustain electrode 23, and the gap between the scan electrode 22 and the sustain electrode 23 (hereinafter abbreviated as a discharge gap). The discharge space of the main discharge cell 40 is limited to the space corresponding to. With this configuration, the light emission efficiency of the panel is improved. The reason why the luminous efficiency is improved is as follows. Considering the case where the horizontal wall portion 34b does not exist under the metal bus 23b, the discharge space of the main discharge cell 40 extends under the metal bus 23b, and electric power is supplied to the discharge space to generate discharge. The ultraviolet rays generated at this time are converted into visible light by the phosphor layer. However, since the metal bus 23b does not transmit visible light, the visible light converted under the metal bus 23b can be efficiently extracted outside the panel. Can not. That is, even if extra power corresponding to the width Xw of the metal bus 23b is input, the luminance hardly changes. In other words, the luminance does not change even if the electric power is reduced by suppressing the discharge under the metal bus 23b, and as a result, the light emission efficiency is improved. Therefore, by providing the horizontal wall portion 34b below the metal bus 23b and limiting the discharge space to the region below the transparent portion of the scan electrode 22 and the sustain electrode 23, waste of electric power can be eliminated and the light emission efficiency can be improved.

  For the above reasons, the width Bb of the region that does not transmit visible light (the sum of the gap Gb between the discharge cells and the width Xw of the two metal buses 23b) and the width Cb of the region that limits the discharge space of the main discharge cell 40 ( It is desirable to design the width Sb of the gap 41b and the sum of the widths Rw of the two lateral walls 34b substantially equal. This is because if the width Cb is too smaller than the width Bb, useless power is increased and the light emission efficiency is deteriorated. Conversely, if the width Cb is too larger than the width Bb, the luminance itself is lowered, which is not desirable.

  Further, since the gap 41b formed in this way becomes a gas passage, it acts as an exhaust path inside the panel in the exhaust process at the time of manufacturing the panel, and is effective in shortening the time of the manufacturing process.

  As for the priming discharge cell 41a, similarly to the gap 41b described above, if the width Ca is too smaller than the width Ba, useless power is increased and the light emission efficiency is deteriorated. Conversely, if the width Ca is too larger than the width Ba, the luminance itself is increased. Therefore, it is desirable to design the width Ba and the width Ca substantially equal. However, since the priming discharge cell 41a needs to be provided with a protruding portion 22b ′ for priming discharge on the front substrate 21 side, the width Ba of the region that does not transmit visible light is a gap between two adjacent scanning electrodes (hereinafter, referred to as a “priming discharge cell”). The sum of Ga and the width Xw of the two metal bus bars 22b is added to the width Yw of the protruding portion 22b ′.

  In the panel according to the embodiment of the present invention, since the gaps between discharge cells Ga and Gb are substantially equal, a non-light-emitting region (region that does not contribute to image display) that increases substantially by providing the priming discharge cell 41a. ) Can be slightly suppressed to only the width Yw of the protruding portion 22b ′.

  An example of the design value of the panel in the present embodiment is that the discharge cell gap Ga on the priming discharge cell 41a side and the discharge cell gap Gb on the gap 41b side are both 200 μm, which is the case in this design example. This value is necessary so that adjacent main discharge cells 40 do not interfere with each other. The metal bus bars 22b and 23b have a width of 100 μm, the lateral wall portion 34b has a width of 100 μm, and the protruding portion 22b ′ has a width of 100 μm. Therefore, the width of the non-light-emitting region, which is substantially increased by providing the priming discharge cells 41a, is only 100 μm per two main discharge cell rows. Even if the priming discharge cells 41a as the auxiliary discharge cells are added, the luminance is increased. Since the distance between the main discharge cells 40 can be shortened without greatly reducing the above, it is possible to easily cope with high definition. The above numerical values are examples, and the present invention is not limited to them. For example, the minimum value necessary for the main discharge cells 40 not to interfere with each other can be set to 200 μm or less by reducing the gap between the lateral wall portion 34b and the front substrate 21.

  As described above, in order to increase the definition of the panel, the discharge cell gap Ga on the priming discharge cell 41a side and the discharge cell gap Gb on the gap 41b side are reduced to reduce the metal bus bars 22b and 23b and the protruding portion 22b ′. It is desirable to reduce the width of the horizontal wall 34b and the width of the lateral wall 34b. At this time, when the gap between discharge cells Ga and the gap between discharge cells Gb are substantially equal, the gap 41b not having the priming electrode, that is, the gap between the gaps 41b where the two sustain electrodes 23 are located adjacent to each other. Is smaller than the gap between the priming discharge cells 41a. According to this configuration, the interval between the pair of display electrodes is alternately repeated as being wide, narrow, wide, and so on. However, since the difference is about the width of the protruding portion 22b ′, it is not a big problem visually. .

FIG. 4 is an electrode array diagram of the plasma display panel in accordance with the exemplary embodiment of the present invention. Data electrodes D _{1 to} D _m (data electrodes 32 in FIG. 1) in the column direction are arranged, and n rows of scan electrodes SC _{1 to} SC _n (scan electrodes 22 in FIG. 1) and n rows in the row direction are arranged. sustain electrodes SU ₁ to SU _n (sustain electrodes 23 in FIG. 1) and the sustain electrodes SU ₁ - scan electrode SC ₁ - scan electrode SC ₂ - sustain electrode SU ₂ - · · · and so as to alternately arranged two by two Has been. In the embodiment, n / 2 priming is performed so as to perform priming discharge between the protruding portions of the odd-numbered scan electrodes SC ₁ , SC ₃ ,... (The protruding portion 22 b ′ in FIG. 1). Electrodes PR ₁ , PR ₃ ,... (Priming electrode 36 in FIG. 1) are arranged.

A main discharge cell C _{i, j} (a main discharge in FIG. 1) including a pair of scan electrodes SC _i , sustain electrodes SU _i (i = 1 to n) and one data electrode D _j (j = 1 to _m ). M × n cells 40) are formed in the discharge space. In addition, priming discharge cells PS _i (priming discharge cells 41a in FIG. 1) including protruding portions of scan electrodes SC _i and priming electrodes PR _i are formed in odd-numbered rows among 1 to n rows.

  Next, driving waveforms and timings for driving the panel will be described.

  FIG. 5 is a drive waveform diagram of the plasma display panel in accordance with the exemplary embodiment of the present invention. In the embodiment, one field period is composed of a plurality of subfields having an initialization period, an address period, and a sustain period, and each subfield is almost the same except that the number of sustain pulses in the sustain period is different. Since it is similar, the operation will be described for only one subfield.

In the first half of the initialization period, the data electrodes D _{1 to} D _m , the sustain electrodes SU _{1 to} SU _n and the priming electrodes PR _{1 to} PR _n-1 are held at 0 (V), respectively, and are applied to the scan electrodes SC _{1 to} SC _n . from voltage Vi ₁ of the discharge start voltage or less with respect to sustain electrodes SU ₁ to SU _n, and applies the ramp waveform voltage gradually rises toward the voltage Vi ₂ that exceeds the discharge start voltage. While the ramp waveform voltage rises, the scan electrodes SC _{1 to} SC _n and the sustain electrodes SU _{1 to} SU _n , the data electrodes D _{1 to} D _m , and the priming electrodes PR _{1 to} PR _n-1 are each first time. A weak initializing discharge occurs. Then, negative wall voltage is accumulated on scan electrodes SC _{1 to} SC _n , and on data electrodes D _{1 to} D _m , sustain electrodes SU _{1 to} S _n and priming electrodes PR _{1 to} PR _n−1 . Accumulates positive wall voltage. Here, the wall voltage at the upper part of the electrode represents a voltage generated by the wall charge accumulated on the dielectric layer covering the electrode.

In the second half of the initializing period, maintaining the sustain electrodes SU ₁ to SU _n to a positive voltage Ve, the scan electrodes SC ₁ to SC _n, the voltage Vi ₃ to be equal to or less than the discharge starting voltage with respect to sustain electrodes SU ₁ to SU _n Is applied with a ramp waveform voltage that gradually falls toward voltage Vi ₄ exceeding the discharge start voltage. During this time, a second weak initializing discharge is generated between the scan electrodes SC _{1 to} SC _n and the sustain electrodes SU _{1 to} SU _n , the data electrodes D _{1 to} D _m , and the priming electrodes PR _{1 to} PR _n−1. Occur. Then, the negative wall voltage above scan electrodes SC ₁ -SC _n and the positive wall voltage above sustain electrodes SU ₁ -SU _n are weakened, and the positive wall voltage above data electrodes D ₁ -D _m is used for the write operation. The positive wall voltage above the priming electrodes PR _{1 to} PR _n-1 is also adjusted to a value suitable for the priming operation. This completes the initialization operation.

In the address period, scan electrodes SC _{1 to} SC _n are temporarily held at voltage Vc. Then, the voltage Vq is applied to the priming electrodes PR _{1 to} PR _n−1 .

First, in the address operation of the discharge cells C _{p, 1 to} C _{p, m} (p = odd number) in the odd-numbered rows, the scan pulse voltage Va is applied to the scan electrode SC _p and the data corresponding to the image signal to be displayed. A positive address pulse Vd is applied to the electrode D _k (k is an integer of 1 to m). The scan electrodes SC _p of odd rows are scanning electrodes for writing with generating the priming discharge in accordance with the self-scanning. Accordingly, priming discharge is generated between the priming electrode PR _p and the scanning electrode SC _p by the application of the scan pulse voltage Va, and the discharge cells C _{p, 1 to} C _{p, m} and the discharge cells C _{p + 1,1 to} C Priming is supplied inside _{p + 1, m} . The discharge at this time is easy to discharge the priming discharge cell, and the voltage Vq can be set high, so that the discharge delay is small and fast and stable priming discharge.

Subsequently, an address discharge is generated in the discharge cell C _{p, k} corresponding to the data electrode D _k to which the address pulse voltage is applied. At this time, the discharge of the discharge cell C _{p, k} is generated while the priming is supplied from the priming discharge generated between the scan electrode SC _p and the priming electrode PR _p , so that the discharge delay is small and the discharge is stable. Due to this address discharge, a positive voltage is accumulated on the scan electrode SC _p of the discharge cell C _{p, k} and a negative voltage is accumulated on the sustain electrode SU _p, and the address operation in the odd-numbered rows is completed.

Next, in the address operation of the discharge cells C _{p + 1,1 to} C _{p + 1, m in} the even-numbered rows, the scan electrode voltage Va is applied to the scan electrode SC _{p + 1} in the p + 1 row, and at the same time, the data electrode D applying a positive write pulse voltage Vd to data electrode D _k corresponding to the image signal to be displayed on the p + 1 th row of the ₁ to D _m. As a result, a discharge is generated at the intersection between the data electrode D _k and the scan electrode SC _{p + 1} . At this time, in the discharge cell C _{p + 1, k} , the discharge occurs in a state where sufficient priming has already been supplied from the priming discharge generated between the scan electrode SC _p and the priming electrode PR _p , so the discharge of the address discharge The delay is very small and stable discharge. Due to this address discharge, a positive voltage is accumulated above scan electrode SC _{p + 1} of discharge cell C _{p + 1, k} and a negative voltage is accumulated above sustain electrode SU _{p + 1.} To do.

Thereafter, the same address operation is performed until the discharge cell C _{n, k} in the _n- th row _, and the address operation is completed.

In the sustain period, after returning once to the scan electrodes SC ₁ to SC _n and sustain electrodes SU ₁ to SU _n to 0 (V), applies a positive sustain pulse voltage Vs to scan electrodes SC ₁ to SC _n. At this time, the voltage between the discharge cell C _i having generated the address _discharge, the scan electrode SC _i top in _k and sustain electrode SU _i top, in addition to the positive sustain pulse voltage Vs, the scan in the address periods electrode SC _i It is subject to accumulated wall voltage and sustain electrode SU _i upper, larger than the discharge start voltage. As a result, a sustain discharge occurs in the discharge cells C _{i, k} . Hereinafter, similarly, by applying a sustain pulse alternately to the scan electrodes SC ₁ to SC _n and sustain electrodes SU ₁ to SU _n, the number of times of sustain pulse discharge cell C _i having generated the address _discharge, for _k The sustain discharge is continuously performed.

Thus, in the embodiment, in the address operation of the discharge cells C _{p, 1 to} C _{p, m} (p = odd number) in the odd-numbered rows, the priming electrode PR _p provided on the back substrate 31 side and the front substrate 21 side to generate a priming discharge between the scan electrodes SC _p provided on the discharge cells C _{p, 1} -C p, inside the priming of _m discharge cells _{C p + 1,1 ~C p + 1} , m By supplying, it is possible to realize a fast and stable address discharge with a small discharge delay.

  In the panel manufacturing process, when the front substrate 21 and the rear substrate 31 are arranged to face each other and sealed, the front substrate 21 and the rear substrate 31 may be misaligned and sealed as they are. At this time, if the lateral wall 34b is displaced in the direction in which it protrudes from the transparent portion of the scanning electrode 22 or the sustain electrode 23 (the portion of the transparent electrodes 22a and 23a where the metal bus bars 22b and 23b are not formed), it contributes to light emission. The discharge space becomes narrow, which may cause a decrease in luminance in the shift generation region, resulting in luminance unevenness. Therefore, it is desirable to design with a margin for deviation so that luminance unevenness does not occur even if deviation occurs during sealing. FIG. 6 is a cross-sectional view showing another embodiment of the plasma display panel of the present invention. FIG. 6A is a panel in which margin δx is secured at a slight sacrifice in luminous efficiency, and FIG. This is a panel that secures a margin δx at the expense of luminance. In the panel shown in FIG. 6A, the width Ca is slightly smaller than the width Ba, and the width Cb is slightly smaller than the width Bb. For this reason, the discharge space also slightly extends in the region below the metal bus bars 22b and 23b, and the light emission efficiency is slightly reduced. However, even if a positional deviation of ± δx occurs during sealing, the lateral wall portion 34b is a transparent portion of the electrode. Since it does not protrude, it does not cause a decrease in luminance. In the panel shown in FIG. 6B, the width Ca is slightly larger than the width Ba, and the width Cb is slightly larger than the width Bb. Therefore, the lateral wall portion 34b slightly protrudes into the transparent portion of the electrode, and the light emission luminance is slightly reduced. However, the amount of deviation of ± δx occurs at the time of sealing and one of the lateral wall portions 34b protrudes into the transparent portion of the electrode. Since the amount of protrusion of the other lateral wall portion 34b is reduced even if increases, the luminance does not change. As described above, in the panel shown in FIG. 6A or 6B, a panel which does not generate luminance unevenness even if the front substrate 21 and the rear substrate 31 are displaced in the panel sealing process. Can be realized.

  The plasma display panel according to the present invention can provide a plasma display panel capable of performing a writing operation stably and at high speed and capable of high definition, so that a plasma display used for a wall-mounted television, a large monitor, etc. Useful for panels.

1 is an exploded perspective view showing a structure of a plasma display panel in an embodiment of the present invention. Cross section of the panel Sectional view for showing the dimensions of the gap of the panel Electrode arrangement of the panel Drive waveform diagram of the panel Sectional drawing of the plasma display panel in other embodiment of this invention

Explanation of symbols

DESCRIPTION OF SYMBOLS 21 Front substrate 22 Scan electrode 22a, 23a Transparent electrode 22b, 23b Metal bus line 22b 'Protruding part 23 Sustain electrode 24 Dielectric layer 25 Protective layer 28 Light absorption layer 31 Back substrate 32 Data electrode 33a, 33b Dielectric layer 34 Partition 34a Vertical Wall part 34b Horizontal wall part 35 Phosphor layer 36 Priming electrode 40 Main discharge cell 41 Gap part 41a Priming discharge cell 41b Gap part

Claims (1)

A first substrate in which two scanning electrodes and sustain electrodes each having a transparent portion that transmits visible light and an opaque portion that does not transmit visible light are arranged alternately in parallel with each other, and a discharge is performed on the first substrate. A second substrate disposed oppositely across a space and having a data electrode disposed in a direction intersecting the scan electrode and the sustain electrode, wherein the second substrate includes the scan electrode, the sustain electrode, and the second electrode. Partitioning main discharge cells composed of data electrodes and partition walls provided so as to generate gap portions between adjacent main discharge cell rows, and two scanning electrodes of the gap portions on the side adjacent to each other and a priming electrode for performing priming discharge between parallel the said scan electrode in a gap portion data electrodes electrically insulated by arranging and scan electrodes of the first substrate occurs, and before The barrier rib is provided so as to limit the discharge space of the main discharge cell to a space corresponding to the transparent portion of the scan electrode, the transparent portion of the sustain electrode, and the discharge gap portion formed by them, and two sustain electrodes The plasma display panel is characterized in that the interval between the gaps formed on the side adjacent to each other is narrower than the interval between the gaps formed on the side adjacent to the two scanning electrodes.

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