KR100590325B1 - Driving apparatus and method for plasma display panel - Google Patents

Abstract

The present invention relates to an apparatus and method for driving a plasma display panel that adjusts the number of switching of a data drive integrated circuit (IC) in an address period. The present invention has an effect of preventing damage to a data drive and improving reliability of the plasma display panel.

The present invention is a driving device of a plasma display panel which applies a pulse to an address electrode, a scan electrode, and a sustain electrode in a reset period, an address period, and a sustain period of a subfield to drive a plasma display panel. A scan electrode driver for applying a scan pulse for addressing, an address electrode driver for performing a switching operation for applying an addressing pulse corresponding to image data to the address electrode when the scan pulse is applied to the scan electrode by the scan electrode driver; The temperature sensing unit senses the temperature of the address electrode driving unit and outputs a temperature measuring signal, and receives the temperature measuring signal from the temperature sensing unit, and compares the temperature with the preset temperature boundary value. Address is greater than or equal to And a controller for controlling adjustment of the switching frequency of the electrode driver.

Description

Driving apparatus and driving method of plasma display panel {Driving Apparatus and Method for Plasma Display Panel}

1 is a view showing the structure of a typical plasma display panel.

2 is a diagram illustrating a method of expressing image gradation of a conventional plasma display panel.

3 is a simplified circuit diagram of a driving apparatus of a general plasma display panel.

4 shows the magnitude of the displacement current according to the image data.

5A and 5B show image data when a minimum displacement current flows through the data driver IC.

6 is a block diagram of a driving device of the plasma display panel according to the present invention.

7 is a view for explaining a method of driving a plasma display panel of the present invention.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plasma display panel, and more particularly, to an apparatus and method for driving a plasma display panel that controls the number of switching of a data drive integrated circuit (IC) in an address period to prevent damage to the data drive.

In general, a plasma display panel is a partition wall formed between a front substrate and a rear substrate to form a unit cell, and each cell includes neon (Ne), helium (He), or a mixture of neon and helium (Ne + He) and An inert gas containing the same main discharge gas and a small amount of xenon is filled. When discharged by a high frequency voltage, the inert gas generates vacuum ultraviolet rays and emits phosphors formed between the partition walls to realize an image. Such a plasma display panel has a spotlight as a next generation display device because of its thin and light configuration.

1 illustrates a structure of a general plasma display panel.

As shown in FIG. 1, a plasma display panel includes a front substrate in which a plurality of sustain electrode pairs formed by pairing a scan electrode 102 and a sustain electrode 103 are formed on a front glass 101, which is a display surface on which an image is displayed. The rear substrate 110 having the plurality of address electrodes 113 arranged to intersect the plurality of sustain electrode pairs on the back glass 111 forming the back surface 100 and the rear surface is coupled in parallel with a predetermined distance therebetween. .

The front substrate 100 is made of a scan electrode 102 and a sustain electrode 103, that is, a transparent electrode (a) formed of a transparent ITO material and a metal material to mutually discharge and maintain light emission of the cells in one discharge cell. The scan electrode 102 and the sustain electrode 103 provided as the bus electrode b are included in pairs. Scan electrode 102 and sustain electrode 103 are covered by one or more upper dielectric layers 104 that limit discharge current and insulate between electrode pairs, and facilitate discharge conditions on top of upper dielectric layer 104. For this purpose, a protective layer 105 on which magnesium oxide (MgO) is deposited is formed.

The rear substrate 110 is arranged in such a manner that a plurality of discharge spaces, that is, barrier ribs 112 of a stripe type (or well type) for forming discharge cells are maintained in parallel. In addition, a plurality of address electrodes 113 which perform address discharge to generate vacuum ultraviolet rays are arranged in parallel with the partition wall 112. On the upper side of the rear substrate 110, R, G, and B phosphors 114 which emit visible light for image display during address discharge are coated. A lower dielectric layer 115 is formed between the address electrode 113 and the phosphor 114 to protect the address electrode 113.

A method of expressing an image gray level of a plasma display panel having such a structure will be described with reference to FIG. 2.

2 is a diagram illustrating a method of implementing image grayscale of a conventional plasma display panel.

As shown in FIG. 2, in the conventional method of expressing a gray level of a plasma display panel, a frame is divided into several subfields having different number of emission times, and each subfield is a reset period (RPD) for initializing all cells again. ) Is divided into an address period APD for selecting a cell to be discharged and a sustain period SPD for implementing gradation according to the number of discharges. For example, when displaying an image with 256 gray levels, a frame period (16.67 ms) corresponding to 1/60 second is divided into eight subfields SF1 to SF8 as shown in FIG. Each of the fields SF1 to SF8 is divided into a reset section, an address section, and a sustain section.

The reset period and the address period of each subfield are the same for each subfield. The address discharge for selecting the cell to be discharged is caused by the voltage difference between the address electrode and the transparent electrode which is the scan electrode. The sustain period is increased at a rate of 2 ⁿ ( ^where n = 0, 1, 2, 3, 4, 5, 6, 7) in each subfield. In this way, since the sustain period is different in each subfield, the gray level of the image is expressed by adjusting the sustain period of each subfield, that is, the number of sustain discharges.

3 is a simplified circuit diagram of a driving apparatus of a general plasma display panel.

As shown in FIG. 3, each discharge cell of the plasma display panel is equivalently operated as one capacitor having a capacitance of a predetermined size, and a predetermined driving module is driven by each of the discharge cells. Installed to apply.

Referring to the operation of the driving apparatus of the general plasma display panel, when the channel corresponding to the first scan electrode Y1 is selected in the scan period, the channel corresponding to the remaining scan electrodes Y2, Y3, ..., Yn is selected. It doesn't work.

When the channel is selected as described above, the second switching element 213-1 of the first scan driver 210-1 corresponding to the selected channel is turned on and the scanning switching element 220 is turned on.

At the same time, the first switching elements 211-2 to 211-n and the ground switching element 230 of the scan drivers 210-2 to 210-n corresponding to the unselected channels are turned on.

As such, the switching elements operate and the first data switching elements 310-1 to 310-m of the data driver ICs 300-1 to 300-m or the second data switching elements 320-1 to 320-m of the data driver ICs 300-1 to 300-m. When a data voltage (+ Vd or 0V) is applied to the address electrodes X1 to Xm by the operation, a write operation is performed to the cell located on the first line.

If the above process is performed on all the scan electrodes (Y1 to Yn), the scan section ends. After the scan process, the first sustain switching element 240, the second switching elements 213-2 to 213-n of the scan drivers 210-1 to 210-n, and the ground switching element 260 are turned on. .

Accordingly, the first sustain voltage (+ Vsy), the first sustain switching element 240, the second switching element (213-2 to 213-n) of the scan drivers (210-1 to 210-n), each scan electrode (Y1 to Yn), the sustain electrodes Z1 to Zn, and the ground switching element 260 form a loop to apply a sustain voltage (+ Vsy) to the scan electrodes Y1 to Yn.

Next, the second sustain switching element 250, the first switching elements 211-2 to 211-n of the scan drivers 210-1 to 210-n, and the ground switching element 230 turn on.

Accordingly, the first switching elements 211-2 to 211 of the second sustain voltage (+ Vsz), the sustain electrodes Z1 to Zn, the scan electrodes Y1 to Yn, and the scan drivers 210-1 to 210-n. -n and the ground switching element 230 form a loop to apply a sustain voltage (+ Vsz) to the sustain electrodes Z1 to Zn.

The driving device of the plasma display panel scans the corresponding electrode through the switching operation of the switching elements included in the scan drivers 210-1 to 210-n and the data driver ICs 300-1 to 300-m in the scan period. A voltage (-Vyscan) and a data voltage (+ Vd or 0V) are applied. In this process, the displacement current Id flows through the address electrodes 300-1 to 300-m through the address electrodes.

Since a typical plasma display panel has a three-electrode structure, as shown in FIG. 2, the first equivalent capacitor Cm1 and the second equivalent capacitor between the address electrode and the scan electrode or between the address electrode and the sustain electrode, as shown in FIG. Cm2) is present.

Therefore, since the state of the voltage applied to the electrode changes according to the operation of the switching elements included in the scan drivers 210-1 to 210-n and the data driver ICs 300-1 to 300-m in the scan period, the first equivalent The displacement current Id generated by the capacitor Cm1 and the second equivalent capacitor Cm2 flows to the data driver ICs 300-1 to 300-m through the address electrode.

However, the displacement current flowing through the data driver ICs 300-1 to 300-m and the magnitude of power thereof vary depending on the image data applied to the address electrodes X1 to Xm.

4A to 4C show the magnitude of the displacement current according to the image data.

3 and 4, when the second scan electrode Y2 is scanned, image data in which logic values 1 and 0 alternately are applied to the address electrodes X1 to Xm. In addition, when the third scan electrode Y3 is scanned, the logic value 0 is maintained at the address electrodes X1 to Xm. The logic value 1 is a state in which a data voltage (+ Vd) is applied to the address electrode, and the logic value 0 is a state in which 0 V is applied to the address electrode.

That is, image data in which logic values 1 and 0 alternately change is applied to a cell on one scan electrode, and image data in which logic value 0 is maintained is applied to a cell on the next scan electrode.

At this time, the displacement current Id flowing through each address electrode is expressed by Equation 1 below.

Id = 1/2 (Cm1 + Cm2) Va

Id: displacement current flowing through each address electrode

Cm1: first equivalent capacitor

Cm2: second equivalent capacitor

Va: voltage applied to each address electrode (+ Vd)

Next, as shown in FIGS. 3 and 4B, when the second scan electrode Y2 is scanned, image data in which logic value 1 is maintained is applied to the address electrodes X1 to Xm. In addition, when the third scan electrode Y3 is scanned, image data in which the logic value 0 is maintained is also applied to the address electrodes X1 to Xm. The logic value 0 is a state in which 0 V is applied to the address electrode.

That is, image data in which 1 is maintained is applied to a cell on one scan electrode, and image data in which logic value 0 is applied is applied to a cell on the next scan electrode.

At this time, the displacement current Id flowing through each address electrode is expressed by Equation 2 below.

Id = 1/2 (Cm2) Va

Id: displacement current flowing through each address electrode

Cm2: second equivalent capacitor

Va: voltage applied to each address electrode

Next, as shown in FIGS. 3 and 4C, when the second scan electrode Y2 is scanned, image data whose logic values 1 and 0 alternately are applied to the address electrodes X1 to Xm. . In addition, when the third scan electrode Y3 is scanned, image data opposite to the phase of the image data applied to the cell on the second scan electrode Y2 is applied. The logic value 1 is a state in which a data voltage (+ Vd) is applied to the address electrode, and the logic value 0 is a state in which 0 V is applied to the address electrode.

At this time, the displacement current Id flowing through each address electrode is expressed by Equation 3 below.

Id = 1/2 (4Cm1 + Cm2) Va

Id: displacement current flowing through each address electrode

Cm1: first equivalent capacitor

Cm2: second equivalent capacitor

Va: voltage applied to each address electrode

As can be seen from Equations 1 to 3, image data in which logic values 1 and 0 alternately are applied to a cell on one scan electrode, and a cell on the one scan electrode is applied to a cell on the next scan electrode. In the case where image data opposite to the logic level of the image data applied to is applied, the largest displacement current flows to the address electrode.

That is, the number of times of switching between the first data switching elements 310-1 to 310-m or the second data switching elements 320-1 to 320-m constituting the data driver ICs 300-1 to 300-m is increased. The largest displacement current Id flows when the most. When a large displacement current Id generated due to the switching of the data driver ICs 300-1 to 300-m flows to the data driver IC, the temperature rises and the data driver ICs 300-1 to 300-m Occasionally, the operation may be abnormal or even broken.

The present invention has been made to solve the above problems, and to provide a driving apparatus and method for a plasma display panel which can improve the reliability of the data driver IC by controlling the magnitude of the displacement current flowing through the data driver IC.

In order to achieve the above object, a plasma display panel driving apparatus may drive a plasma display panel by applying pulses to an address electrode, a scan electrode, and a sustain electrode in a reset period, an address period, and a sustain period of a subfield. In the driving apparatus of a display panel, a scan electrode driver for applying a scan pulse for addressing a scan electrode in an address period and an addressing pulse corresponding to image data when scan pulses are applied to the scan electrode by the scan electrode driver are addressed. An address electrode driver which performs a switching operation for applying to the electrode, a temperature sensing unit which senses the temperature of the address electrode driver and outputs a temperature measurement signal, and receives the temperature measurement signal from the temperature sensing unit in advance. Compared with temperature threshold For example, when the temperature of the address electrode driver is greater than or equal to the temperature boundary value, the controller unit may control the adjustment of the switching frequency of the address electrode driver.

The controller may control to reduce the switching frequency of the address electrode driver when the temperature of the address electrode driver is greater than or equal to the temperature boundary value.

The controller may control to reduce the switching frequency of the address electrode driver only when the temperature of the address electrode driver is greater than or equal to the temperature boundary value only in a predetermined number of subfields.

Further, when the temperature of the address electrode driver is greater than or equal to the temperature boundary value, the subfield controlling the number of switching times of the address electrode driver may be from an initial subfield having a low weight to an arbitrary subfield.

In addition, the temperature boundary value is characterized in that 150 ℃.

The control of the switching frequency of the address electrode driver by the controller is characterized in that the address electrode driver is controlled such that a high level addressing pulse is continuously applied to the address electrode in the address period.

The plasma display panel driving method of the present invention to achieve the above object is to provide a plasma display panel for driving the plasma display panel by applying a pulse to the address electrode, the scan electrode, and the sustain electrode in the reset period, the address period, and the sustain period of the subfield. A driving method, comprising: measuring a temperature of an address electrode driver for performing a switching operation to apply an addressing pulse to an address electrode, comparing the measured temperature of the address electrode driver with a preset temperature boundary value, and measuring And adjusting the switching frequency of the address electrode driver in the address section when the temperature of the address electrode driver is greater than or equal to a preset temperature boundary value.

Here, the switching frequency adjustment step is characterized in that to control to reduce the switching frequency of the address electrode driver.

Further, in the switching frequency adjusting step, the switching frequency of the address electrode driver may be reduced only in a predetermined number of subfields.

In addition, the subfield controlling to reduce the switching frequency of the address electrode driver in the switching frequency adjusting step may be from an initial subfield having a low weight to an arbitrary subfield.

In addition, the temperature boundary value is characterized in that 150 ℃.

The controlling of the switching frequency of the address electrode driver in the switching frequency adjusting step may be performed such that a high level addressing pulse is continuously applied to the address electrode in the address period.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

5A and 5B show image data when a minimum displacement current flows through the data driver IC.

As illustrated in FIG. 5A, when the second scan electrode Y2 is scanned, image data whose logic values 1 and 0 alternately are applied to the address electrodes X1 to Xm. In addition, when the third scan electrode Y3 is scanned, the image data whose logic values 1 and 0 alternately change so as to be equal to the logic level of the addressing pulse corresponding to the image data applied to the cell on the second scan electrode Y2. An addressing pulse of is applied. At this time, the displacement current Id flowing through each address electrode and the corresponding power are as shown in Equation 4 below.

Id = 0

Id: displacement current flowing through each address electrode

Next, as shown in FIG. 5B, when the second scan electrode Y2 is scanned, image data in which logic value 1 is maintained is applied to the address electrodes X1 to Xm. In addition, when the third scan electrode Y3 is scanned, an addressing pulse corresponding to image data in which logic value 1 is maintained is applied to the third scan electrode Y3. At this time, the displacement current Id flowing through each address electrode is expressed by Equation 5 below.

Id = 0

Id: displacement current flowing through each address electrode

As shown in Equations 4 and 5 above, it can be seen that the magnitude of the displacement current is minimal when the logic levels of the addressing pulses corresponding to the image data applied to the cells on the scan electrodes are the same. The logic levels of the addressing pulses corresponding to the image data are the same as that of the first data switching element 310-1 to 310-m or the second data switching element constituting the data driver ICs 300-1 to 300-m. 320-1 to 320-m) state is maintained continuously, that is, no switching is made. Therefore, since the switching is not performed, the displacement current Id induced by the first equivalent capacitor Cm1 and the second equivalent capacitor Cm2 is minimized.

6 is a block diagram illustrating a driving device of the plasma display panel according to the present invention. As shown in FIG. 5, the driving apparatus of the plasma display panel according to the present invention includes a scan electrode driver 510, an address electrode driver 520, a temperature sensor 530, and a controller 540.

The scan electrode driver 510 applies a scan pulse for addressing the scan electrodes Y1 to Yn in the address section.

The address electrode driver 520 includes a data driver IC, and a high level or low level corresponding to image data when a scan pulse is applied to the scan electrodes Y1 to Yn by the scan electrode driver. Is applied to each address electrode (X1 to Xm) by switching. That is, when the scan pulse is applied to the scan electrode by the scan electrode driver 510, a switching operation for applying an addressing pulse corresponding to the image data to the address electrode is performed.

The temperature sensor 530 senses the temperature of the address electrode driver 520 and outputs a temperature measurement signal. The temperature sensing unit 530 may be installed in each of the data drive ICs 300-1 to 300-m.

The controller 540 controls the operation of the scan electrode driver 510. When the controller 540 determines that the temperature measurement signal is greater than or equal to the temperature boundary value, the controller 520 controls the address electrode driver 520. When the scan pulse is applied, the switching of the address electrode driver 520 is controlled so that the logic level of the addressing pulse corresponding to the image data applied to each address electrode is the same. That is, when the controller 540 controls the switching of the address electrode driver 520 as described above, the switching frequency of the address electrode driver 520 when the temperature of the address electrode driver 520 is greater than or equal to a preset temperature boundary value. Control to reduce. Here, the control to reduce the switching of the address electrode driver 520 is to control the logic level of the addressing pulse corresponding to the image data applied to each address electrode as described above.

In addition, the controller unit selects a predetermined number of subfields in one frame, and the number of times of switching of the address electrode driver 520 when the temperature of the address electrode driver 520 is greater than or equal to the temperature boundary value in the selected subfield. It is desirable to control so as to reduce. More preferably, the subfield controlling to reduce the switching frequency of the address electrode driver 520 when the temperature of the above-described address electrode driver 520 is equal to or greater than a temperature boundary value may be selected from an initial subfield having a low weight. This is a subfield up to the subfield of. For example, in a frame including a plurality of subfields arranged in the order of weights, the first, second, and third subfields having low weights are selected, and the address electrode driver ( When the temperature of 520 is greater than or equal to the temperature boundary value, the switching frequency of the address electrode driver 520 is reduced. For example, when one frame is composed of 12 subfields, the controller 540 has a temperature measured by the temperature measurement signal input from the temperature sensing unit 530, and thus the temperature of the current address electrode driver 520 is greater than or equal to the temperature boundary value. If so, the address electrode driver 520 is controlled to apply an addressing pulse corresponding to the image data of the same logic level to the address electrodes X1 to Xm during the first to third subfields. The controller 540 to apply the addressing pulse corresponding to the image data of the same logic level during the subfields 1 to 3 is relatively less affected by the image quality because the weight of the subfields 1 to 3 is small. Because. Here, the addressing pulses corresponding to the image data of the same logic level may be both an addressing pulse of the image data consisting of only the high level, an addressing pulse of the image data consisting of only the low level, or an addressing pulse of the image data mixed with the high and low levels. Is an addressing pulse of video data consisting of only a high level.

In addition, the controller 540 may control the address electrode driver 520 such that addressing pulses corresponding to image data having the same logic level are applied to the address electrodes X1 to Xm for a predetermined number of frames. At this time, the temperature boundary value is preferably 150 ° C.

Accordingly, the address electrode driver 520 may continuously apply a high level addressing pulse to the address electrodes X1 to Xm when the scan pulses are applied to the scan electrodes Y1 to Yn.

In addition, the address electrode driver 520 may continuously apply a low level addressing pulse to the address electrodes X1 to Xm when the scan pulses are applied to the scan electrodes Y1 to Yn.

In addition, the address electrode driver 520 may continuously apply an addressing pulse corresponding to image data having a high level and a low level to the address electrodes X1 to Xm when a scan pulse is applied to the scan electrodes Y1 to Yn. can do.

As described above, since the addressing pulses corresponding to the image data of the same logic level are continuously applied to the address electrodes X1 to Xm, the switching operation of the data drive ICs 300-1 to 300-m is minimized. As a result, the generation of the displacement current is suppressed, so that the heat generated in the data drive ICs 300-1 to 300-m is reduced.

The driving method performed by the driving apparatus of the plasma display panel according to the present invention will be described with reference to FIG. 7.

7 is a view for explaining a method of driving a plasma display panel of the present invention.

As shown in FIG. 7, in the method of driving the plasma display panel of the present invention, first, the temperature of the address electrode driver (not shown) is measured when the plasma display panel is driven (S700). That is, the temperature of the address electrode driver for performing the switching operation for applying the addressing pulse to the address electrode is measured.

The temperature of the address electrode driver measured in step S700 described above is compared with a preset temperature boundary value (S701).

As a result of the comparison in step S701, it is determined whether or not the temperature of the address electrode driver measured in step S700 is equal to or greater than a preset temperature boundary value (S702). It is preferable that the above-mentioned temperature boundary value is 150 degreeC. In this case, in step S702, it is determined whether the temperature of the address electrode driver measured in step S700 is 150 ° C. or higher.

As a result of the determination in step S702, when the temperature of the address electrode driver measured in step S700 is equal to or greater than a preset temperature boundary value, the number of switching of the address electrode driver in the address period is adjusted (S703). Here, it is preferable to control so as to reduce the switching frequency of the address electrode driver. That is, when the temperature of the address electrode driver is greater than or equal to a predetermined temperature boundary value, the above-mentioned switching frequency of the address electrode driver is reduced to reduce heat generation of the address electrode driver. As described above, there are various methods of reducing the number of switching of the address electrode driver. Preferably, the address electrode is controlled such that a high level addressing pulse is continuously applied to the address electrode in the address period.

In addition, in step S703, it is preferable to select a predetermined number of subfields within one frame and to control the number of switching of the address electrode driver in the selected subfield to be reduced. More preferably, the subfield controlling to reduce the switching frequency of the address electrode driver is a subfield from an initial subfield having a low weight to an arbitrary subfield.

As such, those skilled in the art will appreciate that the present invention can be implemented in other specific forms without changing the technical spirit or essential features thereof. Therefore, the above-described embodiments are to be understood as illustrative in all respects and not as restrictive.

The scope of the present invention is shown by the following claims rather than the detailed description, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included in the scope of the present invention. do.

As described above, the present invention has the effect of improving the reliability of the plasma display panel by controlling the magnitude of the displacement current according to the degree of heat generated from the data driver IC.

Claims (12)

A plasma display panel driving apparatus for driving a plasma display panel by applying a pulse to an address electrode, a scan electrode, and a sustain electrode in a reset period, an address period, and a sustain period of a subfield, A scan electrode driver for applying a scan pulse for addressing the scan electrode in the address period; An address electrode driver configured to perform a switching operation for applying an addressing pulse corresponding to image data to the address electrode when a scan pulse is applied to the scan electrode by the scan electrode driver; A temperature sensing unit configured to sense a temperature of the address electrode driver and output a temperature measurement signal; And A controller unit which receives the temperature measurement signal from the temperature sensing unit and controls the switching frequency of the address electrode driver when the temperature of the address electrode driver is greater than or equal to the temperature threshold value; Driving apparatus for a plasma display panel comprising a. The method of claim 1, The controller unit And controlling the number of switching times of the address electrode driver to be reduced when the temperature of the address electrode driver is greater than or equal to the temperature boundary value. The method of claim 2, The controller unit And controlling the switching frequency of the address electrode driver to be reduced when the temperature of the address electrode driver is greater than or equal to the temperature boundary value in a predetermined number of subfields. The method of claim 3, wherein When the temperature of the address electrode driver is greater than or equal to the temperature boundary value, the subfield controlling the number of switching times of the address electrode driver is lower than the initial subfield having a lower weight to an arbitrary subfield. Drive. The method according to any one of claims 1 to 4, The temperature boundary value is 150 ℃ driving device of the plasma display panel. The method according to any one of claims 1 to 4, Adjusting the switching frequency of the address electrode driver by the controller unit And controlling the address electrode driver to continuously apply a high level addressing pulse to the address electrode in the address period. A method of driving a plasma display panel in which a pulse is applied to an address electrode, a scan electrode, and a sustain electrode in a reset period, an address period, and a sustain period of a subfield to drive a plasma display panel. Measuring a temperature of an address electrode driver for performing a switching operation to apply an addressing pulse to the address electrode; Comparing the measured temperature of the address electrode driver with a preset temperature boundary value; And Adjusting the switching frequency of the address electrode driver in the address section when the measured temperature of the address electrode driver is greater than or equal to the preset temperature boundary value. Method of driving a plasma display panel comprising a. The method of claim 7, wherein In the switching frequency adjustment step And controlling the switching frequency of the address electrode driver to be reduced. The method of claim 8, In the switching frequency adjustment step And controlling the number of switching of the address electrode driver to be reduced in a predetermined number of subfields. The method of claim 9, In the switching frequency adjustment step And a subfield controlling the number of times of switching of the address electrode driver from an initial subfield having a low weight to an arbitrary subfield. The method according to any one of claims 7 to 10, The temperature boundary value is 150 ℃ driving method of the plasma display panel. The method according to any one of claims 7 to 10, In the switching frequency adjustment step, the adjustment of the switching frequency of the address electrode driver is And controlling a high level addressing pulse to be continuously applied to the address electrode in the address period.

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