JP4461733B2 - Driving method of plasma display panel - Google Patents

Description

  The present invention relates to a method for driving a plasma display panel.

  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. PDP discharge methods include AC and DC types, and electrode structures include a three-electrode surface discharge type and a counter discharge type. However, at present, AC type three-electrode PDPs, which are AC type and surface discharge type, are mainstream because they are suitable for high definition and easy to manufacture.

  The AC type three-electrode PDP is generally formed by forming a large number of discharge cells 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 for driving the panel, a so-called subfield method is generally used in which one field period is divided into a plurality of subfields, and gradation display is performed by a combination of subfields that emit light. 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 stably generating address discharge.

  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 that the writing time is set long in order to perform the writing operation stably, and the time spent in the writing period becomes too long.

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

  The panel having the priming electrodes and the driving method thereof are for reducing the discharge delay in the address discharge and performing the address operation stably. However, in order to accurately drive the discharge cell having these priming electrodes, it is necessary to accurately control not only the wall charges for the scan electrodes, the sustain electrodes, and the data electrodes, but also the wall charges for the priming electrodes. In particular, with regard to the initialization of the data electrode, the phosphor layer originally formed on the data electrode tends to cause unstable discharge because the discharge delay is increased, but it also interferes with the initialization discharge of the priming electrode. There has been a problem that erroneous discharge is likely to occur.

  At present, the discharge cells tend to be miniaturized as the PDP becomes more precise. At this time, the distance between the electrodes is also shortened, so that the above-described mutual interference of discharge is more likely to occur. There is concern about becoming larger.

  The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a method for driving a plasma display panel that enables stable initialization discharge without mutual interference between electrodes.

The driving method of the plasma display panel according to the present invention is characterized in that an initializing discharge in which the priming electrode becomes a cathode is generated between the priming electrode and the scanning electrode before the initializing discharge in which the data electrode becomes a cathode. To do.

  As described above, according to the present invention, it is possible to provide a method for driving a plasma display panel that enables stable initialization discharge without mutual interference between electrodes.

That is, the invention described in claim 1 is formed on the rear substrate that is formed on the front substrate and arranged in parallel with each other, and on the rear substrate that is arranged opposite to the front substrate with a discharge space interposed therebetween. A plurality of data electrodes arranged in a direction intersecting with the scan electrodes, and a plurality of data electrodes formed on the back substrate in a direction orthogonal to the data electrodes and arranged to face the scan electrodes with a priming space interposed therebetween. A driving method of a plasma display panel having a priming electrode, wherein a plurality of discharge cells are formed by the scan electrode, the sustain electrode, and the data electrode, wherein one field period includes a plurality of subfields, The subfield includes an initialization period in which an initialization discharge is generated between the scan electrode, the data electrode, and the sustain electrode, and the scan field. An address period in which a scan pulse is applied to the electrodes and an address pulse corresponding to an image signal to be displayed on the data electrode is applied to selectively cause an address discharge in the discharge cell, and the scan electrode and the sustain of the selected discharge cell A sustain period in which sustain pulses are alternately applied to the electrodes to generate a sustain discharge, and the data electrode, the sustain electrode, and the priming electrode are held at 0 (V), respectively, and a discharge start voltage is applied to the scan electrodes. Initialization is performed between the scan electrode, the data electrode, and the sustain electrode in a subfield having an initialization period in which an initialization discharge is generated between the scan electrode, the data electrode, and the sustain electrode by applying a voltage exceeding Before generating a discharge, a negative voltage is applied to the priming electrode between the priming electrode and the scan electrode. By a method of driving a plasma display panel priming electrode and wherein the generating the initializing discharge becomes a cathode.

According to a second aspect of the present invention, in the subfield preceding the subfield having the initializing period in which the initializing discharge is generated between the scan electrode, the data electrode, and the sustain electrode in the first aspect. In the sustain period in which a sustain pulse is alternately applied to the scan electrode and the sustain electrode, a negative voltage is applied to the priming electrode to generate an initialization discharge in which the priming electrode becomes a cathode. This is a method for driving a plasma display panel.

(Embodiment)
Hereinafter, a method for driving a plasma display panel according to an embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 is a cross-sectional view showing an example of a plasma display panel used in the embodiment of the present invention, and FIG. 2 is a perspective view schematically showing the structure of the panel on the back substrate side.

  As shown in FIG. 1, a glass front substrate 1 and a rear substrate 2 are disposed to face each other with a discharge space interposed therebetween, and a mixed gas of neon and xenon that emits ultraviolet rays by discharge is sealed in the discharge space.

  On the front substrate 1, a plurality of scanning electrodes 6 and sustaining electrodes 7 are formed in parallel with each other. At this time, two electrodes are alternately arranged so as to be sustain electrode 7 -scan electrode 6 -scan electrode 6 -sustain electrode 7-. Scan electrode 6 and sustain electrode 7 are each composed of transparent electrodes 6a, 7a and metal buses 6b, 7b formed on transparent electrodes 6a, 7a. Here, a light absorption layer 8 made of a black material is provided between scan electrode 6 and scan electrode 6 and between sustain electrode 7 and sustain electrode 7. In the scan electrode 6, the protruding portion 6 b ′ of the metal bus 6 b of one scan electrode 6 is formed so as to protrude up to the light absorption layer 8. A dielectric layer 4 and a protective layer 5 are formed so as to cover the scan electrode 6, the sustain electrode 7, and the light absorption layer 8.

  A plurality of data electrodes 9 are formed in parallel with each other on the back substrate 2, a dielectric layer 15 is formed so as to cover the data electrodes 9, and a partition wall 10 for partitioning the discharge cells 11 is formed thereon. Has been. As shown in FIG. 2, the barrier rib 10 includes a vertical wall portion 10 a extending in a direction parallel to the data electrode 9 and a horizontal wall portion 10 b forming the discharge cells 11 and forming the gap portions 13 between the discharge cells 11. It is configured. Then, every other gap portion 13 is formed with a priming electrode 14 in a direction orthogonal to the data electrode 9 to constitute a priming space 13a. A phosphor layer 12 is provided on the surface of the dielectric layer 15 corresponding to the discharge cells 11 partitioned by the barrier ribs 10 and the side surfaces of the barrier ribs 10. However, the phosphor layer 12 is not provided on the gap 13 side.

  When the front substrate 1 and the rear substrate 2 are disposed opposite to each other and sealed, a protruding portion 6b ′ protruding on the light absorption layer 8 out of the metal bus 6b of the scanning electrode 6 formed on the front substrate 1 is on the rear substrate 2. Alignment is performed so as to face the priming electrode 14 formed in parallel with the priming space 13a. That is, the panel shown in FIGS. 1 and 2 performs a priming discharge between the protruding portion 6b ′ formed on the front substrate 1 side and the priming electrode 14 formed on the back substrate 2 side. Yes.

  1 and 2, a dielectric layer 16 is further formed so as to cover the priming electrode 14, but the dielectric layer 16 may not be formed.

FIG. 3 is an electrode array diagram of the plasma display panel used in the embodiment of the present invention. M columns of data electrodes D _{1 to} D _m (data electrode 9 in FIG. 1) are arranged in the column direction, and n rows of scan electrodes SC _{1 to} SC _n (scan electrode 6 in FIG. 1) and n rows of data electrodes are arranged in the row direction. sustain electrodes SU ₁ to SU _n (sustain electrodes 7 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 of the present invention, n / 2 rows of priming electrodes PR ₁ , PR ₃ ,... So as to oppose the protruding portions of scan electrodes SC ₁ , SC ₃ ,. The priming electrodes 14) of FIG. 1 are arranged.

A discharge cell C _{i, j} (discharge cell of 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 ). 11) are formed in the discharge space, and priming space PS _p (priming space 13a in FIG. 1) including the protruding portion of the scan electrode SC _p (p = odd number) and the priming electrode PR _p is n / 2. Lines are formed.

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

  FIG. 4 is a drive waveform diagram of the plasma display panel drive method according to the embodiment of the present invention. In the embodiment of the present invention, one field period is composed of a plurality of subfields having an initialization period, an address period, and a sustain period, and the initialization period is an initialization period for all discharge cells involved in image display. In the following description, it is assumed that the subfield has a cell initialization period. The initialization period is divided into three for convenience, and is called a priming part, a first half part, and a second half part.

In the initializing period priming unit, the data electrodes D ₁ to D _m and sustain electrodes SU ₁ to SU _n are kept 0 (V), the priming electrodes PR ₁ to PR _n by applying a negative voltage Vr, the scanning electrodes SC ₁ to SC _n priming electrodes in PR ₁ to PR _n exceeds the discharge start voltage with respect to but the sustain electrodes SU ₁ to SU _n and the data electrodes D ₁ to D voltage of the discharge start voltage or less with respect to _m V _i1 Is applied. At this time, a strong initializing discharge in which the priming electrodes PR _{1 to} PR _n serve as cathodes occurs between the scan electrodes SC _{1 to} SC _n and the priming electrodes PR _{1 to} PR _n, and each discharge cell C _{i, j} While priming is diffused, a positive wall voltage is accumulated above the priming electrodes PR _{1 to} PR _n . Here, the wall voltage at the top of the electrode represents a voltage generated by wall charges accumulated on the dielectric layer covering the electrode.

In half of the initializing period, data electrodes D ₁ to D _m, and held the sustain electrodes SU ₁ to SU _n and priming electrodes PR ₁ to PR _n to each 0 (V), the scan electrodes SC ₁ to to SC _n voltage from V _i1, applying a ramp waveform voltage gradually rises toward the voltage V _i2 that exceeds the discharge start voltage with respect to sustain electrodes SU ₁ to SU _n and the data electrodes D ₁ to D _m. While this ramp waveform voltage rises, the weak first time between scan electrodes SC _{1 to} SC _n and sustain electrodes SU _{1 to} SU _n , scan electrodes SC _{1 to} SC _n and data electrodes D _{1 to} D _m , respectively. Initializing discharge occurs. Since the discharge at this time occurs in a state where sufficient priming has already been supplied from the priming electrodes PR _{1 to} PR _n, the discharge becomes stable without erroneous discharge. Negative wall voltage is accumulated on scan electrodes SC _{1 to} SC _n, and positive wall voltage is accumulated on data electrodes D _{1 to} D _m and sustain electrodes SU _{1 to} SU _n .

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 V _i3 which is a discharge start voltage or less with respect to sustain electrodes SU ₁ to SU _{n Is} applied with a ramp waveform voltage that gently falls toward voltage V _i4 exceeding the discharge start voltage. During this period, scan electrodes SC _{1 to} SC _n and sustain electrodes SU _{1 to} SU _n , scan electrodes SC _{1 to} SC _n and data electrodes D _{1 to} D _m , scan electrodes SC _{1 to} SC _n and priming electrodes PR _{1 to} PR _n A weak second initializing discharge occurs between the two. 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 is also adjusted to a value suitable for the priming operation. Thus, the all-cell initialization operation for initializing all the discharge cells involved in image display is completed.

In the address period, scan electrodes SC _{1 to} SC _n are temporarily held at Vc. Then, a voltage Vq substantially equal to (Vc−V _i4 ) is applied to the priming electrodes PR _{1 to} PR _n .

Next, scan pulse voltage Va is applied to the first row to the scan electrodes SC _1. Then, the voltage difference between the priming electrodes PR ₁ top and the top of the protruding portions of the scan electrodes SC ₁ becomes a one (Vq-Va) to priming electrode PR ₁ upper wall voltage is added, the firing voltage Exceeding priming discharge occurs. Then, priming is diffused inside the discharge cells C _{1,1 to} C _{1, m in the} first row and the discharge cells C _{2,1 to} C _{2, m in the} second row. Since the discharge at this time has a structure in which the priming space PS ₁ is easily discharged as described above, a stable priming discharge can be obtained with a small discharge delay. In addition, a negative wall voltage is accumulated on the top of the priming electrode PR ₁ by this discharge.

At the same time, a positive write pulse voltage Vd is applied to the data electrode D _k (k represents an integer of 1 to _m ) corresponding to the image signal to be displayed in the first row among the data electrodes D _{1 to} D _m. . Then, discharge occurs at the intersection of the write pulse voltage Vd data electrode D _k of applying the scan electrodes SC _1, between the corresponding discharge cell C _1, sustain electrodes SU ₁ to _k and the scan electrodes SC ₁ Progresses to discharge. Then, a positive voltage is accumulated on the scan electrode SC _{1 of} the discharge cell C _{1, k} , and a negative voltage is accumulated on the sustain electrode SU ₁ , thereby completing the address operation in the first row.

Here, the first line of the write operation writes with generating the priming discharge with the scan of the scan electrodes SC _1. The address discharge in the discharge cell C _{1, k} is generated while the priming is supplied from the priming discharge generated between the scan electrode SC ₁ and the priming electrode PR ₁ , so that the discharge delay is small and stable.

Next, scan pulse voltage Va is applied to the second line scan electrode SC _2. At the same time, applying a positive write pulse voltage Vd to data electrode D _k corresponding to the image signal to be displayed on the second line of the data electrodes D ₁ to D _m. Then, discharge occurs at the intersection of the data electrode D _k and scan electrode SC _2, develop into discharge between the corresponding discharge cell C _{2, k} and sustain electrode SU ₂ and scan electrode SC _2. Then, a positive voltage is accumulated on the scan electrode SC _{2 of} the discharge cell C _{2, k} and a negative voltage is accumulated on the sustain electrode SU _2, and the address operation in the second row is completed.

Here, the second row of discharge cells C _{2, k} of the write operation occurs in a state where sufficient priming is already supplied from the generated priming discharge between the scan electrodes SC ₁ and the priming electrode PR _1. Therefore, the discharge delay of the address discharge is small and the discharge is stable.

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, scan electrodes SC _{1 to} SC _n , priming electrodes PR _{1 to} PR _n and sustain electrodes SU _{1 to} SU _n are temporarily returned to 0 (V). Thereafter, positive sustain pulse voltage Vs is applied to scan electrodes SC _{1 to} SC _n . At this time, the voltage between the discharge cell having caused the address discharge C _i, and the scan electrode SC _i upper part of _j and sustain electrode SU _i top, in addition to the sustain pulse voltage Vs, the scan electrodes SC _i top and in the address period Since the wall voltage accumulated on the sustain electrode SU _i is added, the discharge start voltage is exceeded and a sustain discharge is generated. 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, discharge cells C _i having generated the address _discharge, the number of times of sustain pulses to _j The sustain discharge is continuously performed.

  As described above, the address discharge in the plasma display panel driving method of the present invention is generated at the same time or immediately before the addressing operation of each discharge cell, unlike the address discharge that depends only on the priming of the initialization discharge in the conventional driving method. This is performed in a state in which sufficient priming is supplied from the applied priming discharge. Therefore, discharge delay is small, high-speed and stable address discharge can be realized, and a high-quality image can be displayed.

  In addition, the timing of generating the initializing discharge when the priming electrode becomes the cathode and the timing of generating the initializing discharge when the data electrode becomes the cathode are separated, so that mutual interference between the respective discharges hardly occurs and is stable. Initializing discharge becomes possible.

  Here, in order to explain the reason why the initialization discharge is stabilized, the above-described operation will be described again, focusing on the priming electrode.

First, in the initialization period priming section, a strong discharge is generated between the scan electrodes SC _{1 to} SC _n and the priming electrodes PR _{1 to} PR _n to diffuse the priming inside each discharge cell C _{i, j} . At this time, no discharge occurs between scan electrodes SC _{1 to} SC _n and sustain electrodes SU _{1 to} SU _n , and scan electrodes SC _{1 to} SC _n and data electrodes D _{1 to} D _m .

In the subsequent half of the initializing period, the ramp waveform voltage applied to the scan electrodes SC ₁ to SC _n, the scan electrodes SC ₁ to SC _n and sustain electrodes SU ₁ to SU _n, scan electrodes SC ₁ to SC _n and data electrodes a weak discharge occurs between the D ₁ to D _m. In the discharge at this time, the data electrode D _{1 to} D _m side, that is, the phosphor layer side serves as a cathode, and the secondary electron emission coefficient of the phosphor is small. If the discharge delay is too large, no discharge occurs even if the upward ramp waveform voltage applied to scan electrodes SC _{1 to} SC _n exceeds the discharge start voltage, and the discharge is generated only when the discharge start voltage is greatly exceeded. To do. The discharge at this time does not become a weak discharge but becomes a strong discharge with a large charge transfer, and an erroneous discharge occurs in the subsequent address period or sustain period. In addition, the state in which no discharge is generated even when the discharge start voltage is exceeded is very unstable, and it is interfered by a small amount of uncontrollable priming due to discharge between neighboring cells and other electrodes. It may induce a discharge.

However, according to the driving method of the embodiment of the present invention, priming with the initializing discharge by each discharge cell between the scan electrodes SC ₁ to SC _n and the priming electrodes PR ₁ to PR _n In the initialization period priming unit Since it is already supplied to C _{i, j} , the discharge between the scan electrodes SC _{1 to} SC _n and the data electrodes D _{1 to} D _m in the first half of the initialization period becomes a stable discharge with a small discharge delay and is necessary. Wall charges can be formed stably. In addition, since the discharge between the scan electrodes SC _{1 to} SC _n and the priming electrodes PR _{1 to} PR _n has already ended, the two discharges do not interfere with each other.

As described above, the priming electrodes PR ₁ to PR ₁ are preceded by the initializing discharge of the data electrodes D _{1 to} D _m , in which the discharge delay is generally large and the discharge tends to become unstable, in particular, the initializing discharge in which the phosphor layer side becomes the cathode. By generating a strong initializing discharge by PR _n , sufficient priming can be supplied between scan electrodes SC _{1 to} SC _n and data electrodes D _{1 to} D _m, and data electrodes D _{1 to} D _m It is possible to stabilize the discharge by reducing the discharge delay of the discharge during the initialization period. Therefore, the wall charge adjustment in the latter half of the subsequent initialization period is also stable, leading to a stable address operation and sustain operation, and a good image display without erroneous discharge becomes possible.

FIG. 5 shows another driving waveform diagram of the plasma display panel driving method according to the embodiment of the present invention. A waveform A indicates a subfield in which a voltage for generating an initialization discharge in which the priming electrodes PR _{1 to} PR _n become cathodes has an initialization period in which an initialization discharge in which the data electrodes D _{1 to} D _m become cathodes is generated. This is a waveform applied to the priming electrodes PR _{1 to} PR _n at the last timing of the sustain pulse of the immediately preceding subfield. The waveform B has an initialization period in which the voltage for generating the initialization discharge in which the priming electrodes PR _{1 to} PR _n become the cathodes generates the initialization discharge in which the data electrodes D _{1 to} D _m become the cathodes. The waveform is applied to the priming electrodes PR _{1 to} PR _n at a timing including several pulses after the sustain pulse of the subfield immediately before the subfield. However, in any waveform, the time interval from the occurrence of the initialization discharge in which the priming electrodes PR _{1 to} PR _n become cathodes to the occurrence of the initialization discharge in which the data electrodes D _{1 to} D _m become cathodes is within 50 μs. It is set to become.

Thus, if the time interval from the occurrence of the initialization discharge in which the priming electrodes PR _{1 to} PR _n become the cathode to the occurrence of the initialization discharge in which the data electrodes D _{1 to} D _m become the cathode is within 50 μs. it is possible to obtain the same effect as the driving method according to the embodiment of the present invention, the inventors have found that the initialization of the data electrodes D ₁ to D _m is stably performed is confirmed experimentally.

  Since each electrode of the AC type PDP is surrounded by a dielectric layer and insulated from the discharge space, the direct current component does not contribute to the discharge itself. Therefore, it goes without saying that the same effect can be obtained even if a waveform obtained by adding a DC component to the drive waveform described in the embodiment is used.

  In the embodiment of the present invention, one field period is composed of a plurality of subfields having an initialization period, an address period, and a sustain period, and the initialization period initializes all discharge cells involved in image display. Although described as a subfield having an all-cell initializing period, the present invention is not limited to a subfield having an all-cell initializing period, and the selective initializing selectively initializes discharge cells that have undergone a sustain discharge. The present invention can be similarly applied even to a configuration in which subfields having periods are arbitrarily combined.

  FIG. 6 is a block diagram showing an example of a circuit configuration of a driving apparatus using the plasma display panel driving method according to the embodiment of the present invention. The driving apparatus 100 according to the embodiment of the present invention includes an image signal processing circuit 101, a data electrode driving circuit 102, a timing control circuit 103, a scan electrode driving circuit 104, a sustain electrode driving circuit 105, and a priming electrode driving circuit 106. Yes. The image signal and the synchronization signal are input to the image signal processing circuit 101. The image signal processing circuit 101 outputs to the data electrode driving circuit 102 a subfield signal for controlling whether or not each subfield is lit based on the image signal and the synchronization signal. The synchronization signal is also input to the timing control circuit 103. The timing control circuit 103 outputs a timing control signal to the data electrode driving circuit 102, the scan electrode driving circuit 104, the sustain electrode driving circuit 105, and the priming electrode driving circuit 106 based on the synchronization signal.

The data electrode drive circuit 102 applies the predetermined drive waveform shown in FIG. 4 or 5 to the data electrodes 9 (data electrodes D _{1 to} D _m in FIG. 3) according to the subfield signal and the timing control signal. To do. Scan electrode drive circuit 104 applies a predetermined drive waveform to scan electrodes 6 (scan electrodes SC _{1 to} SC _{n in} FIG. 3) according to the timing control signal, and sustain electrode drive circuit 105 responds to the timing control signal. A predetermined drive waveform is applied to the sustain electrodes 7 (sustain electrodes SU _{1 to} SU _{n in} FIG. 3) of the panel. The priming electrode driving circuit 106 applies a predetermined driving waveform to the priming electrodes 14 (priming electrodes PR _{1 to} PR _{n in} FIG. 3) according to the timing control signal. The data electrode driving circuit 102, the scan electrode driving circuit 104, the sustain electrode driving circuit 105, and the priming electrode driving circuit 106 are supplied with necessary power from a power supply circuit (not shown).

  By providing the above circuit block, a driving device using the panel driving method in the embodiment of the present invention can be configured.

  It can be used as a manufacturing technology for large-screen, high-definition, high-quality plasma display panels.

Sectional drawing which shows an example of the plasma display panel used for embodiment of this invention The perspective view which shows typically the structure by the side of the back substrate of the plasma display panel used for embodiment of this invention. Electrode arrangement diagram of plasma display panel used in embodiment of the present invention Driving waveform diagram of driving method of plasma display panel in accordance with exemplary embodiment of the present invention Other driving waveform diagrams of the plasma display panel driving method according to the embodiment of the present invention The block diagram which shows an example of the circuit structure of the drive device using the drive method of the plasma display panel in embodiment of this invention

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Front substrate 2 Back substrate 6 Scan electrode 7 Sustain electrode 8 Light absorption layer 9 Data electrode 10 Partition 10a Vertical wall part 10b Horizontal wall part 11 Discharge cell 12 Phosphor layer 13 Gap part 13a Priming space 14 Priming electrode 100 Drive apparatus 101 Image signal Processing circuit 102 Data electrode drive circuit 103 Timing control circuit 104 Scan electrode drive circuit 105 Sustain electrode drive circuit 106 Priming electrode drive circuit

Claims (2)

A plurality of scan electrodes and a plurality of sustain electrodes formed on the front substrate and arranged in parallel to each other, and formed on a back substrate opposed to the front substrate across a discharge space and arranged in a direction crossing the scan electrodes. A plurality of data electrodes, and a plurality of priming electrodes formed on the back substrate in a direction orthogonal to the data electrodes and disposed so as to face the scan electrodes with a priming space in between. A driving method of a plasma display panel in which a plurality of discharge cells are formed by a sustain electrode and the data electrode, wherein one field period includes a plurality of subfields, and the subfield includes the scan electrodes, the data electrodes, and An initializing period for generating an initializing discharge with the sustain electrode, and applying a scan pulse sequentially to the scan electrode In addition, an address pulse corresponding to an image signal to be displayed on the data electrode is applied to selectively generate an address discharge in the discharge cell, and a sustain pulse is alternately applied to the scan electrode and the sustain electrode of the selected discharge cell. Applying a voltage exceeding the discharge start voltage to the scan electrode while maintaining the data electrode, the sustain electrode, and the priming electrode at 0 (V) respectively. In a subfield having an initialization period for generating an initialization discharge between the scan electrode, the data electrode, and the sustain electrode, before generating an initialization discharge between the scan electrode, the data electrode, and the sustain electrode, By applying a negative voltage to the priming electrode between the priming electrode and the scanning electrode, the priming electrode becomes a cathode. The driving method of a plasma display panel, characterized in that to generate the initializing discharge. A sustain pulse in which a sustain pulse is alternately applied to the scan electrode and the sustain electrode in a subfield immediately preceding the subfield having an initializing period for generating an initializing discharge between the scan electrode, the data electrode, and the sustain electrode 2. The method of driving a plasma display panel according to claim 1, wherein an initializing discharge is generated in which the priming electrode becomes a cathode by applying a negative voltage to the priming electrode within a period .

Images