JP2000055963A - Charge transfer amount measurement device - Google Patents

Abstract

(57) [Problem] To quantitatively evaluate driving conditions in an evaluation method of a plasma display panel (PDP) used for image display of a computer, a television, or the like. SOLUTION: The pulse waveform generator includes pulse waveform generators 1 to 3 for applying an arbitrary voltage waveform to each of a first electrode and second and third electrodes, and at least one of the electrodes and the pulse waveform generator. Equipped with a charge measuring device in between,
It has a configuration in which the amount of moving charge is measured by measuring the time-dependent change in the amount of charge of the electrodes together with the time-dependent change in the voltage waveform applied to each electrode. The driving conditions are quantitatively evaluated by measuring the wall charge amount and the discharge delay time.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a charge transfer amount measuring apparatus and a charge transfer amount measuring method capable of easily evaluating characteristics of a nonlinear device element such as a plasma display panel and a ferroelectric element.

[0002]

2. Description of the Related Art In recent years, image display devices such as computer displays and televisions have been demanded to be larger, and accordingly, plasma display panels (hereinafter abbreviated as PDPs) have been attracting attention as thin and lightweight displays. It is desired to establish a technique for evaluating the device characteristics.

A conventional PDP generally has a structure as shown in FIG. In FIG. 15, the front substrate 11
A band-shaped electrode group 19a and a band-shaped electrode group 19b are formed thereon, and the electrode groups 19a and 19b are covered with a dielectric glass layer 17 made of lead glass or the like.
The surface of 7 is covered with a protective layer 18 made of an MgO vapor-deposited film or the like.

On the back substrate 12, a band-like data electrode group 1 is provided.
4 and an insulator layer 13 made of lead glass or the like that covers the surface, and a partition 15 is provided thereon. The front substrate 11 and the rear substrate 12 are combined so that respective electrode groups are orthogonal to each other. The partition 15 is adhered to the rear substrate 12 and is in contact with the front substrate 11. Normally, the front substrate 11 and the rear substrate 12 face each other and are sealed by the partition walls 15 at intervals of about 100 to 200 microns.

By selectively applying a voltage between the electrode groups 19a and 19b on the front substrate 11 and the data electrode group 14 on the rear substrate 12, the charge generated by the gas discharge at the intersection of the selected electrodes is reduced. After an address operation of accumulating on the dielectric glass layer 17 and accumulating pixel information for one screen by scanning an electrode to which a voltage is to be applied, between the electrode group 19 a and the electrode group 19 b on the front substrate 11. By the sustain discharge operation of applying the AC pulse voltage, the discharge cells selected in the address operation emit light simultaneously to display an image. The discharge is performed on the front substrate 11 and the rear substrate 1
2, and because it occurs in a space isolated by the partition wall 15,
Light emission does not diffuse. That is, the partition 15 is formed on the front substrate 11.
The purpose is to define the distance between the display and the rear substrate 12 and to provide high-resolution display.

Further, when performing color display, the phosphor 16 is applied to the periphery of the discharge space blocked by the partition. Since the phosphor is formed by converting ultraviolet light generated by the discharge into visible light, three primary colors of red (R), green (G), and blue (B) are used, and the emission intensity of each is reduced. By appropriate adjustment, color display becomes possible.

As a discharge gas, in the case of a single color display, a mixed gas mainly composed of neon, which emits light in the visible region at the time of discharge, and in the case of a color display, the emission of light during discharge is in an ultraviolet region. A mixed gas centered on xenon is selected. The gas pressure assumes the use of PDP under atmospheric pressure,
Usually, the pressure inside the substrate is reduced to 2
It is set in a range from about 00 Torr to about 500 Torr. FIG. 16 shows an electrode matrix diagram of a conventional PDP.

Next, a conventional PDP driving method will be described with reference to FIG. In FIG. 17, first, electrode group 1
An initialization pulse is applied to 9b1 to 19bN to initialize wall charges in the discharge cells of the panel. Next, a scan pulse is applied to the first electrode 19a1 of the electrode group 19a,
141 to 14M corresponding to the discharge cells performing the display of
, A writing pulse is simultaneously applied to generate a writing discharge to accumulate wall charges on the surface of the dielectric layer.

Next, the second line electrode 1 of the electrode group 19a
A scan pulse is applied to 9ah, and a write pulse is simultaneously applied to lines 141 to 14M corresponding to the discharge cells for displaying the data electrode group 14, thereby causing a write discharge to accumulate wall charges on the surface of the dielectric layer. Subsequently, similarly, a latent image for one screen is written by sequentially accumulating wall charges corresponding to cells to be displayed by continuous scanning on the surface of the dielectric layer.

Next, in order to perform a sustain discharge, the data electrode group 14 is grounded, and a sustain pulse is alternately applied to the electrode group 19a and the electrode group 19b, whereby a cell in which wall charges are accumulated on the surface of the dielectric layer is formed. In this case, a discharge occurs when the potential on the dielectric surface exceeds the discharge start voltage, and the main discharge of the display cell selected by the write pulse is maintained while the sustain pulse is applied. Thereafter, an incomplete discharge is generated by applying a narrow erasing pulse, and the wall charges disappear, so that erasing is performed.

Next, a conventional PDP evaluation method will be described. The conventional PDP evaluation method is as follows: 1) A method of applying a continuous rectangular pulse as shown in FIG. 18 to discharge, measuring the light emission luminance and power consumption, and evaluating the light emission efficiency.

2) A method of actually displaying a video signal such as a test pattern to evaluate luminance, chromaticity and contrast and subjectively evaluate image quality such as flicker and color.

3) A DQ (polarization) -E (electric field) hysteresis curve of a ferroelectric material is measured by a VQ Lissajous measurement method based on the same principle as that of a Sawyer tower circuit used for observation.

[0014]

However, in the above-mentioned conventional method, in the PDP, the wall charge plays an important role in an address operation for selecting a discharge cell to emit light, which is required for actual image display. Because the behavior at the time of addressing could not be observed, when determining the driving conditions for performing the optimum addressing, it was inevitably necessary to perform indirect and qualitative evaluation by a subjective evaluation method. Had problems.

The VQ Lissajous measuring method is shown in FIG.
As shown in FIG. 9, an AC power supply and a capacitor are connected in series to two electrodes for sustaining discharge of the PDP, and a charge amount Q is obtained from a product of a potential from a ground to a connection point of the PDP and the capacitor and a capacity of the capacitor. Potential difference V between two electrodes performing sustain discharge and X on an oscilloscope.
Although the −Y plot makes it possible to measure the amount of charge moved between the electrodes due to the discharge in the steady state, it is a very serious problem that the behavior of the wall charge during the address operation cannot be observed. Had.

Further, the VQ Lissajous measuring method has a serious problem that a transient phenomenon such as a discharge delay cannot be directly measured due to a lack of information on a time axis.

The present invention solves the above-mentioned conventional problems, and quantitatively evaluates the optimum driving conditions by observing the behavior of the wall charges, which plays an important role in the PDP address operation, at the time of addressing. It is an object to provide an evaluation means and an evaluation device.

[0018]

According to the present invention, there is provided an apparatus for evaluating an electronic device having at least three terminals, comprising a pulse voltage waveform applied to each of a first electrode, a second electrode, and a third electrode. And a charge amount measuring device between at least one of the electrodes and the corresponding pulse waveform generating device. The voltage waveform applied to each electrode changes with time, and It has a configuration for measuring the amount of mobile charge by measuring the change over time of the charge amount.

The present invention also provides an electronic device evaluation device having at least three terminals, comprising a pulse waveform generator 3 for applying a pulse voltage waveform to each of the first electrode, the second electrode, and the third electrode. A capacitor and a differential amplifier for measuring a potential difference between both ends of the capacitor are provided between at least one of the electrodes and the corresponding pulse waveform generator. , The change in the amount of charge of the electrode with time is measured to measure the amount of mobile charge.

The present invention also relates to an apparatus for evaluating a discharge element having at least three terminals, comprising a pulse waveform generator 3 for applying a pulse voltage waveform to each of the first electrode, the second electrode and the third electrode. A charge measuring device is provided between at least one of the electrodes and the corresponding pulse waveform generating device, and the moving charge is measured by measuring the temporal change of the charge amount of the electrode together with the temporal change of the voltage waveform applied to each electrode. It has a configuration for measuring the amount.

Further, the present invention provides a plasma display panel having at least three electrodes, a pulse waveform generator 1 for applying a pulse voltage waveform to first and second electrodes for maintaining light emission due to discharge, and 2 and a pulse waveform generator 3 for applying a data pulse voltage waveform to a third electrode for writing information on lighting / non-lighting of the discharge cell, and corresponding to at least one of the electrodes. A charge amount measuring device is provided between the pulse waveform generators, and the moving charge amount is measured by measuring a temporal change of a voltage waveform applied to each electrode and a temporal change of the charge amount of the electrode.

Further, according to the present invention, a pulse waveform generating device comprises:
It has a configuration consisting of an arbitrary function generator and a voltage amplifier.

Further, according to the present invention, the pulse waveform generator has a configuration comprising a waveform memory unit comprising a digital memory for recording and reading voltage waveform data, an analog-digital-analog converter, and a voltage amplifier. .

According to the present invention, there is provided an evaluation device for an electronic device having at least three terminals, comprising a pulse waveform generator 3 for applying a pulse voltage waveform to each of the first electrode, the second electrode and the third electrode. A current integration measuring device is provided between at least one of the electrodes and the corresponding pulse waveform generating device, and the time variation of the voltage waveform applied to each electrode and the time variation of the charge amount of the electrode are measured to measure the moving charge. It has a configuration for measuring the amount.

The present invention also provides an electronic device evaluation device having at least three terminals, comprising a pulse waveform generator 3 for applying a pulse voltage waveform to each of the first electrode, the second electrode, and the third electrode. A charge amount measuring device is provided between at least one of the electrodes and the corresponding pulse waveform generating device, and a time coefficient of a voltage waveform applied to each electrode is measured together with a time-dependent derivative of the measured charge amount of the electrode. In this case, a discharge delay time from when a pulse voltage is applied to when a gas discharge occurs is measured.

[0026]

Embodiments of the present invention will be described below with reference to the drawings.

(Embodiment 1) FIG. 1 is a block diagram of a PDP charge measuring device according to Embodiment 1 of the present invention.

A pulse waveform generator 1 to 3 for applying a drive waveform to each of the scan electrode, the sustain electrode and the data electrode is provided, and the potential difference Vscn-sus between the scan electrode and the sustain electrode is determined by using a differential amplifier A1. The differential amplifier A2 detects the potential difference Vcs between both ends of the reference capacitor Cs inserted between the sustain electrode and the waveform generator 1, and detects the Vscn-sus, Vcs and the data electrode voltage Vdata with an oscilloscope. And a configuration for measuring.

The reference capacitor Cs is for measuring the amount of charge on the sustain electrode side, and has a potential difference V
The charge amount Q is calculated from cs [V] and the capacitance Cs [F] by the following equation (1).

Q [C] = Vcs [V] · Cs [F] (1) Therefore, the applied voltage is measured by measuring the change amount ΔVcs of Vcs that changes according to the drive waveform applied to each electrode. The amount of movement ΔQ of charge per cell generated by the drive waveform is calculated as ΔQ [C] = ΔVcs [V] · Cs [F] / n (2) Here, n is the number of measurement cells.

In an element such as an AC type PDP which selects a pixel (address operation) by using a memory effect of wall charges generated by a discharge, when an image is actually displayed by inputting a video signal, an address is displayed. It is most important to optimize the driving conditions during operation.

In FIG. 2, one line of the scan electrode is selected during the address period, and a data pulse is applied to the data electrode.
Vscn-sus, Vcs and Vda when performing address discharge
An example of each voltage waveform of ta is shown. The variation ΔVcs of Vcs before and after the application of the data pulse measured in FIG.
FIG. 3 shows an example of a result obtained by plotting the relationship between ΔQ calculated using Equation (2) and the data pulse voltage Vdata.

FIG. 3 shows that when Vdata is in the range of 60 V or less, the change in ΔQ is large with respect to the change in Vdata, and the operation is unstable. Also, in this area, there are many flickers of cells and the display state is incomplete.

On the other hand, in the range of 70 V or more, Vda
The change of ΔQ is small with respect to the change of ta, and the display state is also good. The power consumption increases as the driving voltage increases,
Since the rise time of the pulse also increases, it is desirable that the drive voltage be as low as possible. Therefore, the optimum value of Vdata in FIG.

As is apparent from this, the charge measuring device of the PDP according to the first embodiment quantitatively determines the driving conditions during the address operation by measuring the amount of movement of the charges in the discharge cells according to the driving waveform. The present invention realizes a novel evaluation method that is very excellent in that evaluation is performed and optimum driving conditions are obtained.

(Embodiment 2) Normally, there is a time delay, that is, a discharge delay td, from when a rectangular drive pulse is applied to a discharge cell to when a discharge actually occurs. Conventionally,
In order to measure the discharge delay, a discharge current is measured using a current probe or the like, or light emission due to the discharge is optically detected by a streak camera or the like, and a time delay from the drive pulse waveform is measured. In the second embodiment, the potential difference Vcs appearing at both ends of the reference capacitor Cs
Focusing on the temporal change of the first embodiment, it is intended to provide a means for measuring the discharge delay phenomenon very easily, despite the completely same configuration as the first embodiment.

Next, the principle will be described in detail. Discharge current I
Is given by the following equation: I = dQ / dt (3) From the equation (1), I = dVcs · Cs / dt (3) (4) Further deformation I / Cs = dVcs / dt (5) Since Cs is a constant, the temporal change of the discharge current is Vc
Observation is possible by obtaining the derivative of s. Therefore, the evaluation of the discharge delay based on the driving waveform when driving the PDP is realized using the same configuration as in the first embodiment.

FIG. 4 shows a measurement example of the discharge delay of the address discharge generated during the actual address operation of the PDP.

Trace 1 is the potential difference Vscn-sus between the scan and sustain electrodes, trace 2 is the data electrode voltage Vdata, trace 3 is the potential difference Vcs across the reference capacitor Cs, and trace 4 is the derivative thereof. ,
dVcs / dt.

A trace 5 shows a light emission waveform B due to discharge measured simultaneously using an avalanche photodiode (APD).

For the dVcs / dt of trace 4, the differential waveform was observed in real time using the arithmetic function of a digital oscilloscope. Comparing the traces 4 and 5, it can be seen that the temporal peak positions of the respective peaks exactly match, and that the discharge delay can be observed by taking the derivative of Vcs.

FIG. 5 shows Vdata at various initialization voltages.
An example of the td dependency on is shown below. It can be seen that the discharge delay time td gradually decreases with an increase in Vdata, and that the higher the initialization voltage Vset, the shorter td and the shorter the rise of discharge at lower Vdata, so that high-speed driving becomes possible.

As is apparent from this, the charge measuring device of the PDP according to the second embodiment measures the discharge delay time by measuring the derivative of the amount of movement of the charge in the discharge cell according to the drive waveform, and performs the address operation. The present invention realizes a novel evaluation method which is very excellent in that the driving conditions at the time are quantitatively evaluated and the optimum driving conditions are obtained.

(Embodiment 3) FIG. 6 is a block diagram of a PDP charge measuring device according to Embodiment 3 of the present invention.

Embodiment 3 and Embodiments 1 and 2
The difference is that the pulse waveform generator has a configuration including an arbitrary function generator and a voltage amplifier.

According to this configuration, the shape and voltage of the pulse applied to the discharge cell can be arbitrarily and easily changed, so that the correlation between the rising speed of the pulse and the characteristics of the discharge can be measured very easily. It becomes possible.

FIG. 7 shows the relationship between the rising speed vd of the data pulse applied to the data electrode at the time of the address operation of the PDP and td. It has been found that td changes depending on the waveform of the rising portion of the data pulse, which greatly affects the driving conditions during the address operation.

As is apparent from the above, the charge measuring device of the PDP according to the third embodiment has a configuration including an arbitrary function generator and a voltage amplifier as a pulse waveform generator, so that the rising waveform of the pulse and the discharge can be reduced. The present invention realizes a very excellent new evaluation method in that the correlation between the characteristics can be evaluated very easily.

(Embodiment 4) FIG. 8 is a block diagram of a pulse waveform generator of a PDP charge measuring apparatus according to Embodiment 4 of the present invention. The difference from the first to third embodiments is that the pulse waveform generator has a waveform memory unit (W) comprising a digital memory for recording and reading voltage waveform data and an analog-digital-analog converter.
FM) and a voltage amplifier.

According to this configuration, the PDP is driven by actually inputting the video signal, and the waveform of the pulse applied to the discharge cell when displaying an image is sampled and recorded, and the waveform is exactly the same as the actual discharge waveform. It is possible to evaluate the driving conditions by measuring the discharge characteristics such as ΔQ and td under the driving conditions.

Further, after sampling and recording the waveform of the pulse at the time of actually driving the PDP, the waveform data on the digital memory is calculated by a computer, and the shaped or deformed waveform is applied to the discharge cell. Overshoot at the rising edge of the drive circuit, reflected wave due to mismatch of impedance between drive circuit and PDP, ringing noise due to resonance of path length inductance and capacitance of PDP, or discharge current due to insufficient current capacity of drive circuit It is possible to evaluate the influence of the terminal voltage drop at the peak, the external noise, and the like on the discharge characteristics of the PDP under independent conditions.

Next, FIG. 9 shows Vscn-sus during a sustain discharge period when an image is actually displayed on a PDP. In the drive waveform when an actual image is displayed, periodic noise due to ringing, voltage drop due to insufficient current allowance of the drive circuit, and the like are observed.

FIG. 10 is a schematic diagram of a measuring system for evaluating the influence of the drive waveform distortion due to ringing noise on the discharge characteristics during the address operation. A computer connected to the WFM performs sampling and deformation of the drive waveform and timing control of each pulse.

FIGS. 11A and 11B show driving waveforms used for measurement when a data pulse includes ringing noise and when the data pulse does not include ringing noise, respectively. FIGS. Are shown in Table 1.

[0055]

[Table 1]

As can be seen from Table 1, td is increased in the driving waveform including the ringing noise as compared with the waveform not including the driving noise. This is because the start of the discharge was delayed because the rising portion of the pulse was dull due to the ringing noise of about 4 MHz as shown in FIG. 11A.

As is apparent from this, the charge measuring device of the PDP according to the fourth embodiment has a configuration in which the pulse waveform generator uses a digital memory for recording and reading voltage waveform data and an analog-digital-analog converter. Is very simple in that the correlation between the shape of the drive pulse waveform and the characteristics of the discharge, which was very difficult in the past, can be evaluated very easily. It realizes a new evaluation method which is excellent in the above.

(Embodiment 5) FIG. 12 is a block diagram of a charge measuring device for a PDP according to Embodiment 5 of the present invention.
The difference from the first to fourth embodiments is that a current integrator is used instead of the reference capacitor Cs connected in series between the electrode and the pulse waveform generator to measure the amount of charge.

In the fifth embodiment of the present invention, the circuit configuration as shown in FIG. 13 is used as the current integrator. However, the present invention is not limited to this. Other configurations may be used.

Normally, a film capacitor is used as Cs. However, since the applied voltage is distributed according to the ratio of the capacitance between the electrodes of the PDP and the capacitance of Cs to be measured, the voltage between the electrode terminals of the PDP is always constant. In order to measure under conditions, it was necessary to adjust the value of Cs by replacing the capacitor according to the capacitance between the electrodes of the PDP.

On the other hand, in the PDP charge measuring device according to the third embodiment of the present invention, continuous adjustment is possible by changing the amplification factor of the voltage amplification operational amplifier in the current integrator, which is very simple. Measurement becomes possible.

The rising waveform of the data pulse applied to the data electrode during the address operation of the PDP measured using the PDP charge measuring device according to the fifth embodiment of the present invention, and t
FIG. 14 shows the relationship of d. It can be seen that td changes depending on the waveform of the rising portion of the data pulse.

As is apparent from this, the charge measuring device for the PDP according to the fifth embodiment has a reference capacitor Cs
By using a configuration using a current integrator instead of, a new evaluation method that is very excellent in that the correlation between the rising waveform of the pulse and the characteristics of the discharge can be performed very easily can be realized. Things.

[0064]

As described above, according to the present invention, by measuring the amount of mobile charges, it is possible to perform a direct quantitative evaluation of driving conditions, which was impossible in the past. Is obtained.

[Brief description of the drawings]

FIG. 1 is a block diagram of a charge measuring device for a plasma display panel according to a first embodiment of the present invention.

FIG. 2 is a voltage waveform diagram of Vscn-sus, Vcs, and Vdata during an address operation measured by the charge measuring device of the plasma display panel according to the first embodiment of the present invention.

FIG. 3 is a diagram showing the dependence of ΔQ on Vdata measured by the charge measuring device of the plasma display panel according to the first embodiment of the present invention.

FIG. 4 is a diagram showing a measurement example of a discharge delay at the time of an address operation measured by the charge measuring device for a plasma display panel according to the second embodiment of the present invention;

FIG. 5 is a diagram showing td dependence on Vdata at various initialization voltages measured by the charge measuring device of the plasma display panel according to the second embodiment of the present invention.

FIG. 6 is a block diagram of a charge measuring device for a plasma display panel according to a third embodiment of the present invention.

FIG. 7 is a diagram showing a relationship between vd and td during an address operation measured by the charge measuring device of the plasma display panel according to the third embodiment of the present invention.

FIG. 8 is a block diagram of a charge measuring device for a plasma display panel according to a fourth embodiment of the present invention.

FIG. 9 is a voltage waveform diagram during a sustain discharge period when an image is displayed on the plasma display panel.

FIG. 10 is a schematic diagram of a measurement system for evaluating the influence of a drive waveform distortion on a discharge characteristic during an address operation using a charge measuring device for a plasma display panel according to a fourth embodiment of the present invention;

FIG. 11 shows a driving waveform of a data pulse.

FIG. 12 is a block diagram of a charge measuring device for a plasma display panel according to a fifth embodiment of the present invention.

FIG. 13 is a diagram showing an example of a circuit configuration of a current integrator of a charge measuring device for a plasma display panel according to a fifth embodiment of the present invention.

FIG. 14 shows vd and td measured using the charge measuring device for a plasma display panel according to the fifth embodiment of the present invention.
Diagram showing the relationship

FIG. 15 is a configuration diagram of a conventional plasma display panel.

FIG. 16 is an electrode matrix diagram of a conventional plasma display panel.

FIG. 17 is a timing chart of a conventional plasma display panel driving method.

FIG. 18 is a driving timing chart for evaluating the luminous efficiency of a conventional plasma display panel.

FIG. 19 is a diagram showing VQ of a conventional plasma display panel.
Schematic of Lissajous measurement method

[Explanation of symbols]

 1, 2, 3 pulse waveform generator 11 front substrate 12 rear substrate 13 insulator layer 14 data electrode group 15 partition 16 phosphor 17 dielectric glass layer 18 protective film 19a, 19b electrode group A1, A2 differential amplifier

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI theme coat ゛ (reference) // G01R 29/24 G01R 29/24 Z F term (reference) 2G036 AA13 AA28 BA32 5C012 AA09 BE01 5C040 DD17 5C080 AA05 DD30

Claims (13)

[Claims] An apparatus for evaluating an electronic device having at least three terminals, comprising: a pulse waveform generator for applying a pulse voltage waveform to each of the first electrode, the second electrode, and the third electrode. A charge measuring device between the one electrode and the corresponding pulse waveform generator;
A charge transfer amount measuring device characterized in that a transfer charge amount is measured by measuring a change over time of a charge amount of an electrode together with a change over time of a voltage waveform applied to each electrode. 2. An apparatus for evaluating a discharge element having at least three terminals, comprising: a pulse waveform generator for applying a pulse voltage waveform to each of the first electrode and the second and third electrodes. Equipped with a charge amount measuring device between one electrode and the corresponding pulse waveform generator, and measures the amount of moving charge by measuring the change over time of the charge amount of the electrodes together with the change over time of the voltage waveform applied to each electrode. A charge transfer amount measuring device for a discharge element. 3. A plasma display panel having at least three electrodes, comprising pulse waveform generators 1 and 2 for applying a pulse voltage waveform to first and second electrodes for maintaining light emission due to discharge. A pulse waveform generator 3 for applying a data pulse voltage waveform to a third electrode for writing information on lighting / non-lighting of a discharge cell, and a pulse waveform generator corresponding to at least one of the electrodes. A charge transfer amount measuring device comprising a charge amount measuring device between the electrodes, and measuring the amount of moving charge by measuring the change over time of the charge amount of the electrodes together with the change over time of the voltage waveform applied to each electrode. 4. The charge transfer device according to claim 1, wherein the charge amount measuring device has a configuration including a capacitor and a differential amplifier for measuring a potential difference between both ends of the capacitor. Quantity measuring device. 5. The charge transfer amount measuring device according to claim 1, wherein the pulse waveform generating device has a configuration including an arbitrary function generating device and a voltage amplifier. 6. The pulse waveform generator according to claim 1, further comprising a digital memory for recording and reading voltage waveform data, a waveform memory unit comprising an analog-digital-analog converter, and a voltage amplifier. Item 6. The charge transfer amount measuring device according to any one of Items 1 to 5. 7. An evaluation device for an electronic device having at least three terminals, comprising a pulse waveform generator for applying a pulse voltage waveform to each of the first electrode, the second electrode, and the third electrode. Measuring the amount of moving charge by equipping a current integrator between one electrode and the corresponding pulse waveform generator, and measuring the change over time of the charge amount of the electrode together with the change over time of the voltage waveform applied to each electrode. A charge transfer amount measuring device characterized by the above-mentioned. 8. An apparatus for evaluating an electronic element having at least three terminals, comprising: a pulse waveform generator 3 for applying a pulse voltage waveform to each of the first electrode, the second electrode, and the third electrode; Equipped with a charge measuring device between any one of the electrodes and the corresponding pulse waveform generator, and by measuring the time-dependent derivative of the measured charge of the electrode along with the time-dependent change of the voltage waveform applied to each electrode. A charge transfer amount measuring device for measuring a discharge delay time from when a pulse voltage is applied to when a gas discharge occurs. 9. A method for measuring a charge transfer amount, comprising measuring a transfer charge amount based on a measurement result of a change in the charge amount of the electrode with the lapse of time of a voltage waveform applied to the electrode. 10. The discharge element according to claim 1, wherein the amount of moving charge is measured based on the result of measurement of the change of the amount of charge of the electrode with time with the time change of the voltage waveform applied to the electrode connected to the discharge element. Charge transfer amount measurement method. 11. A plasma display panel, comprising:
A charge transfer amount measuring method, comprising: measuring a transfer charge amount based on a measurement result of a change over time of a charge amount of the electrode together with a change over time of a voltage waveform applied to an electrode for maintaining light emission due to discharge. 12. A plasma display panel, comprising:
Measuring the amount of moving charge based on the measurement result of the change with time of the charge amount of the electrode together with the change with time of the voltage waveform applied to the electrode for writing the lighting / non-lighting information of the discharge cell. Movement amount measurement method. 13. A discharge delay from the application of a pulse voltage to the occurrence of a gas discharge based on a measurement result of a differential coefficient of a change in a charge amount of the electrode with time measured together with a change in a voltage waveform applied to the electrode with time. A method for measuring a charge transfer amount, comprising measuring time.