JP2002311889A - Method for driving plasma display panel, and plasma display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to prevent a poor quality picture from being displayed, prevent the burning of a picture due to still picture display, and also reduce useless power consumption. SOLUTION: A PDP(Plasma Display Panel) 10 is of an AC discharge memory operation type. A video signal processing part 31 detects a period in which an input video signal is not present a blanking period when the input video signal is blanked and a non-signal period when the input video signal is in a non-signal state, outputting a drive halt signal to a timing pulse generating part 33 in that period to halt the operations of sustaining electrode driving part 35 and a common pulse generating part 36, or the like to stop generating various kinds of driving pulses, and also outputting a power source cut-off signal to a power source part 40 to cut off the power sources such as those of the sustaining electrode driving part 35, the common pulse generating part 36, or the like. The same operation is performed when a user inputs a picture erase instruction signal by picture erase operation.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of driving a plasma display panel used as a display device such as a TV (television) receiver or a PC (personal computer), and a plasma display including the plasma display panel and a driving device. Related to the device.

[0002]

2. Description of the Related Art Plasma display panels ("Pla")
In the following, a plasma display panel is referred to as a PDP because of the abbreviation of “sma Display Panel”.)
Has a thin structure, can easily realize a large screen, has no display flicker, has a large display contrast, has a fast response speed, and is capable of self-luminous multi-color display. Because of its features, it has been attracting attention and used as a display device such as a TV receiver and a PC.

[0003] Depending on the operation method, the PDP is an AC discharge type in which the electrodes are covered with a dielectric and indirectly operates in an AC discharge state, and a PDP is a DC discharge state in which the electrodes are exposed to a discharge gas space. It is roughly divided into DC discharge type to be operated. Further, the AC discharge type PDP has a memory operation type using a memory property of a discharge cell as a driving method,
There is a refresh operation type that does not use memory characteristics.

FIG. 4 shows a schematic plan structure of an AC discharge memory operation type PDP. FIG. 5 is a schematic cross section of one display cell (pixel portion). The structure is shown.

The PDP 10 has scanning electrodes Sc1, Sc2 ‥‥ Scm as row electrodes and sustain electrodes Su1, S2.
u2 ‥‥ Sum, and data electrode D as a column electrode
1, D2, D3 ‥‥ Dn are formed, and the display cell 1 is m
They are arranged in a dot matrix over rows and n columns.

As shown in FIG. 5, for example, as shown in FIG. 5, an ITO (Indium Tin Oxid) is formed on a transparent front insulating substrate 11 made of, for example, glass.
e) transparent scanning electrode 12 and sustaining electrode 13
Are formed in parallel with each other, and trace electrodes 14 and 15 for reducing electrode resistance are formed on the scan electrode 12 and the sustain electrode 13, respectively.
A dielectric layer 16 is formed on front insulating substrate 11 to cover sustain electrode 13 and trace electrodes 14 and 15, and a protective layer 17 made of magnesium oxide or the like is formed on dielectric layer 16 to protect the dielectric layer 16 from discharge. Is done.

A data electrode 22 is formed on a rear insulating substrate 21 made of, for example, glass so as to be orthogonal to the scanning electrodes 12 and the sustain electrodes 13 on the front insulating substrate 11. A dielectric layer 23 is formed on 21, and a phosphor layer 24 that emits visible light upon irradiation with ultraviolet light is formed on the dielectric layer 23.

Front insulating substrate 11 and rear insulating substrate 21
Are the protective layer 17 on the front insulating substrate 11 and the rear insulating substrate 2
The first phosphor layer 24 is disposed so as to oppose, and a discharge gas space 2 therebetween is filled with a discharge gas 3 made of a gas such as helium, neon, or xenon, or a mixed gas thereof. However, although omitted in FIG. 5, the discharge gas space 2 is separated for each row by partition walls in the column direction of FIG.

Then, as described below, the discharge gas space 2
When the discharge gas 3 is discharged in the above, ultraviolet rays 4 are generated from the discharge gas 3, and the ultraviolet rays 4 irradiate the phosphor layer 24, and visible light 5 is generated from the phosphor layer 24.
Is displayed.

In a certain display cell 1, when a pulse voltage exceeding a discharge threshold is applied between the scan electrode 12 and the data electrode 22, the dielectric layers 16 and 23 on both sides are applied in accordance with the polarity of the pulse voltage. Positive and negative charges are attracted to the surface, causing charge accumulation. The equivalent internal voltage due to the accumulation of the electric charges, that is, the wall voltage, has a polarity opposite to that of the applied pulse voltage, so that the effective voltage inside the cell decreases as the discharge grows, and the pulse voltage becomes a constant value. Even if it is held, the discharge cannot be maintained, and the discharge finally stops.

Thereafter, when a sustain discharge pulse having the same polarity as the wall voltage is applied between the scan electrode 12 and the sustain electrode 13 of the same display cell, the wall voltage is superimposed as an effective voltage. In addition, even if the voltage amplitude of the sustain discharge pulse is small, the effective voltage inside the cell can exceed the discharge threshold and discharge.

Therefore, scanning electrode 12 and sustain electrode 13
By continuously applying the sustain discharge pulse alternately during the period, the discharge can be maintained. This feature
This is the memory function described above. In addition, by applying a wide low-voltage pulse or a narrow erasing pulse which is about the voltage of the sustain discharge pulse to neutralize the wall voltage to the scan electrode 12 or the sustain electrode 13, the sustain discharge is performed. Can be stopped.

[Driving Method of AC Discharge Memory Operation Type PDP] FIG. 6 shows a specific method of driving the PDP 10 as described above, and is described in the document "SOCIETY FOR INF"
ORMATION DISPLAY INTERNAT
IONAL Symposium Digest Of
TECHNICAL PAERRS VOLUME
XXVI. OCT. 1995, pp. 807-810 ".

According to this method, a subfield, which is one cycle of driving, is divided into a preliminary discharge period, a write discharge period, and a sustain discharge period.

The preliminary discharge period is a period for generating active particles and wall charges in the discharge gas space 2 in order to obtain a stable write discharge characteristic in the subsequent write discharge period. , All sustain electrodes Su as shown as sustain electrode drive waveforms.
After applying a preliminary discharge pulse Pp for simultaneously discharging all the display cells 1 to 1, Su2 @ Sum, all the scan electrodes Sc1, Sc2 as shown as scan electrode drive waveforms Ws1, Ws2 @ Wsm. A common pre-discharge erasing pulse Ppe for extinguishing the charge that hinders the writing discharge and the sustain discharge among the wall charges generated by the pre-discharge pulse Pp is applied commonly to ‥‥ Scm.

That is, first, the sustain electrodes Su1 to Sum
After applying a preliminary discharge pulse Pp of voltage Vp to all the display cells 1 to generate a preliminary discharge, the scan electrodes S
Predischarge erase pulse Ppe of voltage Vpe is applied to c1 to Scm.
Is applied to cause erasure discharge in all the display cells 1 and erase the wall charges deposited by the preliminary discharge pulse Pp.

Next, during the write discharge period, as shown by the scan electrode drive waveforms Ws1, Ws2 ‥‥ Wsm, the scan pulse Pw of the voltage Vw is applied to the scan electrodes Sc1, Sc2 ‥‥ Scm sequentially, As shown as the electrode drive waveform, in synchronization with this scan pulse Pw,
A data write pulse Pd of a voltage Vd is selectively applied only to the data electrode Di (1 ≦ i ≦ n) of a display cell to be displayed, to generate a write discharge in the display cell to be displayed, and to reduce a wall charge. Generate.

The scan base pulses Pbw in the scan electrode drive waveforms Ws1 to Wsm are respectively equal to the scan electrodes Sc1 to Scm in the write discharge period other than the scan pulse Pw.
The voltage value is set so that no discharge occurs between the data electrode and the scan electrode to which the scan base pulse Pbw is applied even when the data write pulse Pd is applied to the data electrode.

Next, during the sustain discharge period, as shown in the sustain electrode driving waveform, all the sustain electrodes Su1, Su2 ‥
A common sustain pulse Pc of a negative voltage Vs is applied to the Sum, and the scan electrode driving waveforms Ws1 and Ws
As shown as s2 ‥‥ Wsm, all scan electrodes Sc
In a display cell in which a write discharge is performed during a write discharge period by applying a sustain discharge pulse Ps having a negative voltage Vs delayed by 180 degrees with respect to the sustain discharge pulse Pc in common to 1, Sc2 ‥‥ Scm. A predetermined number of sustain discharges,
Repeat. FIG. 6 shows sustain discharge pulses Pc and P
This is a case where sustain discharge is repeatedly performed eight times by generating four s.

As shown in FIG. 7, one field is divided into a plurality of subfields having different time widths from each other, and the sustain discharge is repeated in the sustain discharge period shown in FIG. 6 in each subfield. The ratio of the number of times (the number of sustain discharge pulses Pc and Ps) is 1: 2: 4:
8:16:32}, and a gradation is obtained by selecting a subfield in which a write discharge and a sustain discharge are performed in accordance with the value of video data.

For example, when the video data is represented by 6 bits, as shown in FIG. 7, one field is divided into six subfields from a first subfield to a sixth subfield, and the video data is "101001". Sometimes
In the first subfield, the fourth subfield, and the sixth subfield, a write discharge and a sustain discharge are performed, and the total number of sustain discharges in one field is reduced to 41.
k (where k is the number of repetitions of the sustain discharge in the first subfield where the number of repetitions of the sustain discharge in the sustain discharge period is the smallest). When the video data is “011101”, the first subfield, the third subfield,
In the fourth subfield and the fifth subfield, write discharge and sustain discharge are performed, and the total number of sustain discharges in one field is set to 29k. As a result, a luminance gradation corresponding to the value of the video data is obtained.

In order to display a multi-color image, for example, the phosphor layer 24 shown in FIG. 5 emits red, green and blue light respectively for each of the display cells 1 in the row direction of FIG. To do so, it cyclically forms red, green, and blue display cells,
During the write discharge period of the subfield selected according to the values of the red, green, and blue primary color data, respectively,
The data write pulse is applied to the data electrodes of the green and blue display cells.

[Conventional Plasma Display Apparatus] FIG.
FIG. 1 shows a conventional plasma display device that drives an AC discharge memory operation type PDP 10 shown in FIGS. 4 and 5 by the method shown in FIGS.

This plasma display device is a PDP
10, a drive unit 30, and a power supply unit 40. The drive unit 30 includes a video signal processor 31, a video data generator 32, a timing pulse generator 33, a sustain electrode driver 35, and a common pulse generator. 36, a scan pulse generator 37, and a data electrode driver 38.

The video signal processing section 31 generates a video signal to be supplied to the video data generation section 32 from the input video signal, extracts horizontal and vertical synchronization signals, and generates a reference clock. .

In the timing pulse generator 33, the sustain electrode driver 35, the common pulse generator 36, the scan pulse generator 37, the video data generator 32, the data electrode 32, and the synchronizing signal from the video signal processor 31 are used. Various timing pulses to be supplied to the drive unit 38 are generated.

In the sustain electrode driving section 35, based on the timing pulse from the timing pulse generating section 33,
As shown as the sustain electrode driving waveform, a pre-discharge pulse Pp is generated in the pre-discharge period, and a sustain discharge pulse Pc is generated in the sustain discharge period, and is applied to each of the sustain electrodes 13 (Su1 to Sum) in common. .

In the common pulse generator 36, based on the timing pulse from the timing pulse generator 33, as shown as a part of the scan electrode drive waveforms Ws1 to Wsm in FIG. P
pe is the sustain discharge pulse Ps in the sustain discharge period,
Each scanning electrode 12 (Sc1 to Scm) generated respectively
Are applied in common.

In the scan pulse generator 37, based on the timing pulse from the timing pulse generator 33, as shown as a part of the scan electrode drive waveforms Ws1 to Wsm in FIG. A scan base pulse Pbw is generated, and each scan electrode 1
2 (Sc1 to Scm).

In the video data generator 32, the video signal from the video signal processor 31 and the timing pulse generator 3
3, the data write pulse P as shown as the data electrode drive waveform in FIG.
d is obtained, and the data electrode driving unit 3
8 is supplied.

In the data electrode driving section 38, based on the video data from the video data generating section 32 and the timing pulse from the timing pulse generating section 33, as shown in FIG. During the write discharge period of the subfield selected according to the value of the data write pulse, the data write pulse Pd is generated and selectively applied to the data electrodes 22 (D1 to Dn).

Sustain electrode driver 35, common pulse generator 3
6. Scan pulse generator 37 and data electrode driver 3
8 is supplied with high-voltage power from the power supply unit 40 for driving the PDP 10 as described above.

[0033]

In the above-described plasma display device, when the input video signal is switched from a video signal obtained by receiving a TV broadcast to a video signal output from a PC, for example, When the image is switched, or when the image signal is switched from the non-input state to the input state, the horizontal and vertical scanning frequencies temporarily change, so that an image flows on the PDP 10 screen. A bad image may be displayed.

Therefore, when the input video signal is switched,
When switching from a state where no video signal is input to a state where it is input, the input video signal is blanked,
The data write pulse Pd is not output from the data electrode drive unit 38, and no charge is written to the display cell 1 from the data electrodes 22 (D1 to Dn).

However, in this case, although no image is displayed on PDP 10, sustain electrode driving unit 3
5 and the common pulse generator 36 continue to operate and continuously generate the sustain discharge pulses Pc and Ps, so that the switching of the circuits in the sustain electrode driver 35 and the common pulse generator 36 consumes wasteful power. If the no-signal state of the video signal continues for a long time, a large amount of power is wasted.

In a satellite digital broadcast, audio information such as music is distributed as a broadcast program, and an EPG (Electronic Program Gu) is used as an image.
ide: electronic program guide) may be displayed.

In this case, in a receiver using the PDP 10 as a display device, when a still image is displayed on the PDP 10,
The phosphor layer 24 that continues to emit light deteriorates quickly, and as a result, an image is burned on the display screen.

As a countermeasure, a method of blanking the input video signal and erasing the image is employed in the same manner as when the input video signal is switched or when the video signal is switched from the non-input state to the input state. ing.

However, even in this case, since the sustain electrode driving unit 35 and the common pulse generating unit 36 continue to operate, wasteful power is consumed by the sustain electrode driving unit 35 and the common pulse generating unit 36, and the blanking state For a long time, large power is wasted.

Therefore, the present invention is designed to reduce unnecessary power consumption.

[0041]

According to a first aspect of the present invention, there is provided a plasma display panel driving method of a plasma display panel for emitting and displaying a display cell by repeatedly performing a sustain discharge by a sustain discharge pulse after a write discharge by a data write pulse. In the driving method, in particular, when there is no input video signal, the generation of the data write pulse and the sustain discharge pulse is stopped, and the power supply of a drive unit that generates the data write pulse and the sustain discharge pulse is turned off. It shuts off.

In the plasma display panel driving method according to a second aspect of the present invention, a sustain discharge by a sustain discharge pulse is repeatedly performed after a write discharge by a data write pulse.
A driving method of a plasma display panel for causing a display cell to emit light, and in particular, stopping the generation of the data write pulse and the sustain discharge pulse by an external image erasing instruction, and controlling the data write pulse and the sustain discharge. This is to cut off the power supply of the drive unit that generates the pulse.

According to the plasma display panel driving method of the first invention, it is possible to prevent an image of poor quality from being displayed on the plasma display panel and reduce unnecessary power consumption. .

According to the plasma display panel driving method of the second aspect of the present invention, it is possible to prevent burn-in of an image due to display of a still image on the plasma display panel and reduce unnecessary power consumption. it can.

[0045]

DESCRIPTION OF THE PREFERRED EMBODIMENTS [Embodiment of Plasma Display Device and Driving Method ... FIG. 1] FIG. 1 shows an embodiment of a plasma display device of the present invention.

This plasma display device is a PDP.
10, a drive unit 30, and a power supply unit 40. The PDP 10 is an AC discharge memory operation type PDP as shown in FIGS. 4 and 5, and is driven by a method as shown in FIGS.

The drive unit 30 includes a video signal processing unit 31,
A video data generator 32, a timing pulse generator 33,
It is composed of a sustain electrode driving section 35, a common pulse generating section 36, a scanning pulse generating section 37, and a data electrode driving section 38.

The video signal processing section 31 receives an input video signal and a picture deletion instruction signal obtained by a user's picture deletion operation.

The video signal processing unit 31 generates a video signal to be supplied to the video data generation unit 32 from the input video signal, extracts horizontal and vertical synchronization signals, generates a reference clock, A period during which no input video signal is present (a blanking period when the input video signal is blanked and a no-signal period when the input video signal is in a no-signal state) is detected, and during that period, the drive stop signal is detected. And a power-off signal.

The video signal processing section 31 similarly outputs a drive stop signal and a power cutoff signal when the image deletion instruction signal is input.

In the timing pulse generator 33, the sustain electrode driver 35, the common pulse generator 36, the scan pulse generator 37, the video data generator 32, and the data Various timing pulses to be supplied to the drive unit 38 are generated.

Further, in this embodiment, when the video signal processing section 31 outputs a drive stop signal to the timing pulse generation section 33, the timing pulse generation section 33 outputs the sustain electrode drive section 35, the common pulse generation section 36, The operation of the scan pulse generator 37 and the data electrode driver 38 is stopped, and the generation of various drive pulses as shown in FIG. 6 is stopped.

Sustain electrode driving section 35, common pulse generating section 3
6. Scan pulse generator 37 and data electrode driver 3
8 generates various drive pulses based on the timing pulse from the timing pulse generator 33. When the drive stop is controlled by the timing pulse generator 33, the operation stops and the drive pulse is generated. Stop.

Further, high voltage power is supplied from a power supply unit 40 to the sustain electrode driving unit 35, the common pulse generating unit 36, the scanning pulse generating unit 37, and the data electrode driving unit 38. When the power cutoff signal is output from the unit 31 to the power supply unit 40, the power is cut off.

That is, in this embodiment, when the video signal processing section 31 detects that no input video signal exists, the video signal processing section 31 outputs a drive stop signal and a power cutoff signal, Sustain electrode driving section 35, common pulse generation section 36, scan pulse generation section 37,
And the data electrode driving unit 38 stops the operation and stops the generation of the driving pulse, and the sustain electrode driving unit 35,
The power of the common pulse generator 36, the scan pulse generator 37, and the data electrode driver 38 is cut off.

Therefore, when the input video signal is switched or when the video signal is switched from the non-input state to the input state, a poor quality image is not displayed on the PDP 10 and wasteful power is not consumed. There is no consumption.

Furthermore, in this embodiment, on the other hand, PD
When a still image is displayed on P10, when the user performs a blanking operation, a drive stop signal and a power cutoff signal are output from the video signal processing unit 31 in the same manner as when there is no input video signal, The sustain electrode driving unit 35, the common pulse generating unit 36, the scan pulse generating unit 37, and the data electrode driving unit 38 stop their operations and stop generating driving pulses, and the sustain electrode driving unit 35, the common pulse generating unit The power of the scan pulse generator 36, the scan pulse generator 37, and the data electrode driver 38 is cut off.

Therefore, image sticking due to the display of a still image on the PDP 10 is prevented, and unnecessary power is not consumed.

The sustain electrode driver 35 and the common pulse generator 3
6, the operation of the sustain electrode driver 35 and the common pulse generator 36 can be stopped, and the generation of the drive pulse can be stopped. However, it takes some time to completely shut off the power supply, during which time the sustain electrode drive unit 35 and the common pulse generation unit 36 are in an unstable operation state. On the other hand, by directly stopping the operations of the sustain electrode driving unit 35 and the common pulse generation unit 36 as described above, an unstable operation state does not occur.

[Embodiment as TV Receiver—FIGS. 2 and 3] FIG. 2 shows a case where the present invention is applied to a TV receiver capable of receiving satellite digital broadcasting.

In this TV receiver, a satellite digital broadcast signal received by a parabolic antenna 61 including a converter is selected by a digital tuner 62, and the digital tuner 62 outputs a signal from an MPEG (moving picture).
re Experts Group) System TS
(Transport Stream) is output.

This TS is supplied to the demultiplexer 63 for the image PES (Packetized Element).
(stream), audio PES, data signals of data broadcasting, and information such as EPG information.
The video PES is decoded by the video decoder 64 and the audio PE
S is decoded by the audio decoder 65, the data signal of the data broadcast is decoded by the data decoder 66, and information such as EPG information is taken into the control unit 80.

The video signal output from the video decoder 64 and the data signal output from the data decoder 66 are
7, and the output of the synthesis processing unit 67 is input to the drive unit 30 as an input video signal.

The audio data output from the audio decoder 65 is
DAC (Digital to Analog Con)
The analog audio signal is converted to an analog audio signal by an audio amplifier 72 and input to a speaker 73.

The control unit 80 has a CPU (Central
A processing unit (MPU) 81 is provided, and the bus 82 has a ROM (Read Only Memory) in which a program including a drive control processing routine to be executed by the CPU 81 and various fixed data are written.
y) RAM (Random Access Mem) 83 serving as a work area for CPU 81
ory) 84 is connected.

Further, a remote control light receiving section 85 for receiving an infrared remote control signal from a remote control (remote control) transmitter 90 is connected to the bus 82. The user
The remote controller transmitter 90 can perform a blanking operation when a still image is displayed, in addition to a channel selecting operation.

In this embodiment, the CPU 81 performs the detection of whether or not an input video signal exists, which is performed by the video signal processing unit 31 in the embodiment of FIG. When there is no input video signal, a drive stop signal is sent from the control unit 80 to the drive unit 30, and the control unit 80 sends the drive stop signal to the power unit 40.
A power shutoff signal is sent to the power supply.

Also, when the user performs a blanking operation using the remote controller transmitter 90, a drive stop signal is sent from the control unit 80 to the drive unit 30, and the control unit 80 sends the power supply unit 4
A power cutoff signal is sent to 0.

FIG. 3 shows an example of a drive control processing routine to be executed by the CPU 81. In this drive control processing routine 50, first, in step 51, it is determined whether or not there is an instruction to delete the image from the remote control light receiving unit 85 by the image deletion operation in the remote control transmitter 90.
From 1, the process proceeds to step 52 to determine whether or not a synchronizing signal is present in the output of the synthesizing unit 67.
It is determined whether or not an input video signal exists.

When a synchronizing signal is present, that is, when an input video signal is present, the process proceeds from step 52 to step 53, where the drive unit 30 and the power supply unit 40 are brought into a steady operation state. That is, the power supply unit 4
0, power is supplied to the drive unit 30 and the drive unit 30
Generates various drive pulses.

On the other hand, if it is determined in step 52 that there is no synchronizing signal, that is, it is determined that there is no input video signal, the process proceeds from step 52 to step 54, in which the generation of the driving pulse from the driving unit 30 is stopped. The process further proceeds to step 55, where the supply of power from the power supply unit 40 to the drive unit 30 is cut off.

When it is determined in step 51 that there is an image deletion instruction, the flow advances from step 51 to step 54 to stop the generation of the drive pulse from the drive unit 30, and further to step 55, where the power supply The power supply from the unit 40 to the drive unit 30 is cut off.

After the operation of the drive unit 30 is stopped in step 54 and the power supply of the drive unit 30 is cut off in step 55, as described above, it takes some time for the power supply to be completely shut off. This is because during this period, the sustain electrode driving unit 35, the common pulse generating unit 36, and the like enter an unstable operation state.

[0074]

According to the first aspect of the present invention, it is possible to prevent a poor quality image from being displayed on the plasma display panel and to reduce unnecessary power consumption.

According to the second aspect, it is possible to prevent burn-in of an image due to display of a still image on the plasma display panel and reduce unnecessary power consumption.

[Brief description of the drawings]

FIG. 1 is a diagram showing one embodiment of a plasma display device of the present invention.

FIG. 2 is a diagram showing one embodiment of a TV receiver to which the present invention is applied.

FIG. 3 is a diagram showing an example of a drive control processing routine executed by a CPU of the TV receiver in FIG. 2;

FIG. 4 is a diagram showing a schematic plan structure of an AC discharge memory operation type PDP.

FIG. 5 is a diagram showing a schematic cross-sectional structure of one display cell of an AC discharge memory operation type PDP.

FIG. 6 is a diagram illustrating an example of a method of driving an AC discharge memory operation type PDP.

FIG. 7 is a diagram showing an example of a method for realizing a luminance gradation of an AC discharge memory operation type PDP.

FIG. 8 is a diagram showing an example of a conventional plasma display device.

[Explanation of symbols]

Since the main parts are all described in the figure, they are omitted here.

[Procedure amendment]

[Submission date] May 30, 2002 (2005.3.
0)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claims

[Correction method] Change

[Correction contents]

[Claims]

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0008

[Correction method] Change

[Correction contents]

Front insulating substrate 11 and rear insulating substrate 21
Are the protective layer 17 on the front insulating substrate 11 and the rear insulating substrate 2
The first phosphor layer 24 is disposed so as to oppose, and a discharge gas space 2 therebetween is filled with a discharge gas 3 made of a gas such as helium, neon, or xenon, or a mixed gas thereof. However, although omitted in FIG. 5, the discharge gas space 2 is separated for each column by partition walls in the row direction (left-right direction in the figure) of FIG.

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name] 0041

[Correction method] Change

[Correction contents]

[0041]

According to a first aspect of the present invention, there is provided a plasma display panel driving method of a plasma display panel for emitting and displaying a display cell by repeatedly performing a sustain discharge by a sustain discharge pulse after a write discharge by a data write pulse. A driving method, in particular, when an input video signal is not present, after stopping generation of the data write pulse and the sustain discharge pulse, a power supply of a drive unit for generating the data write pulse and the sustain discharge pulse Is to shut off.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0042

[Correction method] Change

[Correction contents]

In the plasma display panel driving method according to a second aspect of the present invention, a sustain discharge by a sustain discharge pulse is repeatedly performed after a write discharge by a data write pulse.
A method of driving a plasma display panel for causing a display cell to emit light, and in particular, after stopping the generation of the data write pulse and the sustain discharge pulse in response to an external image erasing instruction, the data write pulse and the sustain This is to cut off the power supply of the drive unit that generates the discharge pulse.

Claims (4)

[Claims] 1. After a write discharge by a data write pulse, a sustain discharge by a sustain discharge pulse is repeatedly performed,
A method for driving a plasma display panel that causes a display cell to emit light, comprising: stopping the generation of the data write pulse and the sustain discharge pulse when there is no input video signal; A method for driving a plasma display panel in which a power supply of a driving device unit is cut off. 2. After a write discharge by a data write pulse, a sustain discharge by a sustain discharge pulse is repeatedly performed,
A driving method of a plasma display panel for causing a display cell to emit light, wherein the generation of the data write pulse and the sustain discharge pulse is stopped by an external image deletion instruction, and the data write pulse and the sustain discharge pulse are generated. A method for driving a plasma display panel in which a power supply of a driving device unit is cut off. 3. A plasma display panel, a driving unit for repeatedly performing a sustain discharge by a sustain discharge pulse after a write discharge by a data write pulse and causing a display cell of the plasma display panel to emit light, and an input video signal being present. Control means for detecting whether or not to perform the operation, when there is no input video signal, stopping the generation of the data write pulse and the sustain discharge pulse from the drive unit, and shutting off the power supply of the drive unit. A plasma display device comprising: 4. A plasma display panel, a drive unit for repeatedly performing a sustain discharge by a sustain discharge pulse after a write discharge by a data write pulse and causing a display cell of the plasma display panel to emit light, and Control means for stopping the generation of the data write pulse and the sustain discharge pulse from the driving device unit and shutting off the power supply of the driving device unit in accordance with an instruction.