JPH08327970A - Driving method for liquid crystal device - Google Patents

Abstract

PURPOSE: To provide a liquid crystal device driving method with excellent responsiveness to applied voltage. CONSTITUTION: When a liquid crystal is switched from OFF state to ON state, after a just before voltage S4 was applied from a non-voltage state, a drive voltage S1 is applied to be switched from OFF state to ON state. Further, in the ON state, after the just before signal S2 reducing the voltage value of the drive signal S1 was applied, by applying an interruption signal S3 (0V), the liquid crystal is switched from the ON state to the OFF state. By applying the just before voltages S2 , S4 , the rise time τrise and the decay time τdecay of the liquid crystal are shortened.

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 liquid crystal device, and more particularly to a liquid crystal device such as a liquid crystal shutter for controlling a light transmission / blocking by driving a liquid crystal by applying a predetermined voltage between a pair of electrodes. Driving method.

[0002]

2. Description of the Related Art An example of a conventional liquid crystal device is a liquid crystal shutter. FIG. 6 shows a normally white mode liquid crystal shutter using TN liquid crystal (twisted nematic liquid crystal). The liquid crystal shutter includes a pair of translucent substrates 11 and 11 arranged to face each other, and a pair of electrodes 1 formed on the inner surfaces of the pair of translucent substrates 11 and 11.
2 and 12, a liquid crystal layer 14 enclosed between a pair of electrodes 12 and 12, and a pair of polarizing plates 13 and 13 provided outside the pair of translucent substrates 11 and 11.

The operation of the liquid crystal shutter using this TN liquid crystal will be described below. FIG. 6A shows a cross-sectional structure during light transmission operation, and FIG. 6B shows a cross-sectional structure in a light blocking state.

First, as shown in FIG. 6A, in the state where no voltage is applied between the pair of electrodes 12, 12, the liquid crystal layer 14 has the major axes of the liquid crystal molecules parallel to the substrates 11, 11.
Moreover, the upper and lower substrates 11 and 11 are arranged in a continuous 90 ° twisted arrangement. In addition, a pair of upper and lower polarizing plates 13,
13 are arranged so that their polarization axes differ by 90 °. Therefore, the incident light 15 that has passed through the polarizing plate 13 and the substrate 11 and is incident on the inside from the upper side in the figure changes the polarization direction by 90 ° by the liquid crystal layer 14 and reaches the lower polarizing plate 13.
Since the polarization axis of the lower polarizing plate 13 is different from that of the upper polarizing plate 90 by 90 °, the incident light 15 passes through the lower polarizing plate 13 and is emitted to the outside.

On the other hand, in the light blocking state shown in FIG. 6B, when a predetermined voltage 16 is applied between the pair of electrodes 12, 12, the twisted arrangement of liquid crystal molecules in the liquid crystal layer 14 is eliminated. . Therefore, the incident light 15 incident from the upper polarizing plate 13 side reaches the lower polarizing plate 13 without being further polarized by the liquid crystal layer 14. Since the polarization direction of the lower polarization plate 13 and that of the incident light that has reached is different by 90 °, the incidence light 13 is blocked by the lower polarization plate 13 and is not emitted to the outside. By such an operation, a light blocking operation is performed.

FIG. 7 is an explanatory diagram showing drive signals applied to the pair of electrodes 12 and 12 and corresponding open / closed states of the liquid crystal shutter. In the pair of electrodes 12, 12,
0V and a predetermined drive voltage Vmax are applied alternately. That is, in the light transmission (OPEN) state shown in FIG. 6A, the voltage between the pair of electrodes 12, 12 is 0 V, and
In the light shutoff (SHUT) state shown in (b), the drive voltage Vmax is applied to the pair of electrodes 12, 12. With such a drive voltage, the liquid crystal shutter repeats each operation of transmitting and blocking light.

FIG. 8 shows another example of the drive signal of the liquid crystal applied to the pair of electrodes 12, 12.

[0008]

As shown in FIG. 7, there is usually a certain delay between the timing of applying a voltage to the electrodes and the response time of the liquid crystal. For example, in FIG. 7, in order for the liquid crystal to respond to a predetermined light transmittance that can be regarded as a light blocking state after the drive voltage Vmax is applied to the electrode 12, the rise time τrise is required, while the electrode The fall time τdecay is required for the liquid crystal to respond to a predetermined light transmittance that can be regarded as a light transmission state from when the voltage application is cut off. However, this τri
If se and τdecay are large, afterglow occurs at the timing when light should originally be blocked, and conversely, sufficient transmitted light cannot be obtained at the timing when light should be transmitted.
There is a problem that the contrast of light and dark is insufficient.

An object of the present invention is to provide a liquid crystal driving method capable of improving the response of the liquid crystal to a driving voltage.

[0010]

According to the present invention, there is provided a first operation period having at least a period during which a predetermined voltage is applied,
A method of driving a liquid crystal device, wherein at least a second operation period having a period in which no voltage is applied is repeated.

More specifically, according to the present invention, a pair of translucent substrates arranged to face each other, a pair of electrodes arranged to face each other inside the pair of translucent substrates, and a space enclosed between the pair of electrodes. And a second operation period having at least a period in which no voltage is applied between the pair of electrodes, and a second operation period having at least a period in which no voltage is applied. This is a method of driving a liquid crystal device, which repeatedly transmits and blocks light in each of the first and second operation periods.

The present invention is characterized in that there is a period during which a voltage different from the predetermined voltage is applied in the first operation period or the second operation period.

In the first broad aspect of the present invention, after a predetermined voltage is applied between the pair of electrodes in the first operation period, a voltage having an absolute value smaller than the predetermined voltage is applied. . When switching from the first operation period to the second operation period, a state in which a voltage having a small absolute value is applied to the pair of electrodes is continuously switched to a state in which no voltage is applied.

According to another broad aspect of the present invention, in the second operation period, the absolute value is smaller than the predetermined voltage in the first operation period after the period in which the voltage is not applied to the pair of electrodes. Apply voltage. Then, at the time of switching from the second operation period to the first operation period, continuously from a state in which a voltage having a small absolute value is applied to the pair of electrodes,
It is characterized by switching to a state in which a predetermined voltage is applied.

Further, in another aspect of the present invention, first, in the first operation period, a predetermined voltage is applied between the pair of electrodes, and then the first voltage having an absolute value smaller than the predetermined voltage is applied.
Voltage is applied. Further, when switching from the first operation period to the second operation period, the state in which the first voltage is applied to the pair of electrodes is continuously switched to the state in which no voltage is applied. Further, in the second operation period, after the period in which the voltage is not applied to the pair of electrodes, the second voltage whose absolute value is smaller than the predetermined voltage in the first operation period is applied. Further, when switching from the second operation period to the first operation period, the state in which the second voltage is applied to the pair of electrodes is continuously switched to the state in which the predetermined voltage is applied. .

In a method of driving a liquid crystal device according to a limited aspect of the present invention, the liquid crystal device is a liquid crystal shutter further having a pair of polarizing plates arranged outside or inside the pair of translucent substrates. It has a feature.

Further, in a method for driving a liquid crystal device according to another limited aspect of the present invention, the liquid crystal device further includes a pair of liquid crystals further having a pair of polarizing plates arranged outside or inside the pair of translucent substrates. It is characterized in that it is image stereoscopic eyeglasses equipped with shutters.

[0018]

In the liquid crystal device according to the present invention, in the first operation period, a predetermined voltage is applied between the pair of electrodes to change the alignment direction of the liquid crystal molecules in the liquid crystal layer. As a result, a light transmitting or blocking operation is performed. At this time, the alignment state of the liquid crystal molecules can be greatly changed as the absolute value of the voltage applied to the electrode is increased. Then, when the timing of switching between the first operation period and the second operation period approaches, the voltage applied to the electrodes is changed so that the absolute value of the voltage becomes small. When such a voltage having a small absolute value is applied, the alignment state of the liquid crystal molecules of the liquid crystal layer approaches the alignment state of the liquid crystal in the second operation period immediately before switching to the second operation period. Therefore, when the voltage applied to the pair of electrodes is changed to 0 V from such a state and switched to the second operation period,
The time required for the liquid crystal to switch from the array state corresponding to the predetermined voltage application state to the array state corresponding to the no-voltage state,
It is shortened as compared with the conventional method.

Further, no voltage is applied to the electrodes during the second operation period. For this reason, the liquid crystal molecules of the liquid crystal layer are in an array state of no voltage. This state is the opposite operation to the light blocking / transmitting operation in the first operation period.

Then, when the switching timing between the second operation period and the first operation period approaches again, a voltage whose absolute value is smaller than a predetermined voltage is applied to the pair of electrodes, and the liquid crystal molecules are applied with no voltage. The array state is changed to an array state in which a voltage is slightly applied. Then, after that, when a predetermined voltage is continuously applied, the liquid crystal molecules are greatly affected by the electric field due to the predetermined voltage, and the alignment state is greatly changed. At the time of switching between the second operation period and the first operation period, a voltage whose absolute value is smaller than the predetermined voltage in the first operation period is given in advance to accelerate the response of the liquid crystal molecules. You can

[0021]

Embodiments of the present invention will now be described in detail with reference to the drawings. First, a method for driving a liquid crystal shutter will be described as an embodiment of the present invention. Since the basic structure of the liquid crystal shutter and the operation principle thereof are the same as those of the conventional case described with reference to FIG. 6, the description of the structure and operation principle of the liquid crystal shutter will be omitted here. In the following, first, the contents of various experiments conducted to improve the response of the liquid crystal corresponding to the drive signal of the liquid crystal shutter and the results thereof will be described.

First, a normally white mode liquid crystal shutter device having a structure as shown in FIG. 6 is prepared. In this case, two liquid crystal layers, TN liquid crystal and STN liquid crystal, are used.
I prepared a variety of things. And, for a pair of electrodes,
The drive signals shown in FIGS. 3A to 3D were applied. FIG. 3 shows four types of drive signal waveforms, and shows one set of signal waveforms in an ON state in which a voltage is applied to the electrodes and an OFF state in which no voltage is applied to the electrodes.

FIG. 4 shows a general relationship between the applied voltage V applied to the pair of electrodes of the liquid crystal shutter and the transmittance T of the light passing through the liquid crystal shutter. Here, the content of each symbol used in FIGS. 3 and 4 will be described.

First, V represents the applied voltage applied to the electrodes, and the subscripts 0, 10 ... Max respectively represent the voltage levels. For example, V ₁₀ represents a voltage at which the light transmittance is changed such that the light transmittance changes by 10% with respect to the light transmittance in the no-voltage state, and V ₀ represents no voltage, that is, 0V. further Vmax shows the voltage applied when the transmittance T = T _min.

Further, T represents the light transmittance of the liquid crystal shutter, and the subscripts 0, 10 ... 100 represent the numerical values of the transmittance. For example, T ₁₀₀ indicates the light transmittance when no voltage is applied to the electrodes (V ₀ ).

Further, Table 1 shows various conditions used in the experiment.

[0027]

[Table 1]

In Table 1, for example, in the case of TN liquid crystal, the dynamic range of the applied voltage is 0V to 16.8V.
Then, the dynamic range of light transmittance is 34% ~
It is 0.17%.

Referring again to FIG. 3, the four used in the experiment
The types of signal waveforms will be described. The signal waveform shown in FIG. 3A is similar to the conventional one, and is used for comparison.

The signal waveform shown in FIG. 3B uses V ₁₀ instead of V _{0 as the} low voltage side voltage in the dynamic range of the driving voltage. Furthermore, the signal voltage shown in FIG. 3 (c), in which instead of the V ₉₉ the high-pressure-side voltage of the dynamic range from Vmax.

Further, the signal voltage shown in FIG. 3D is V on both the low voltage side and the high voltage side of the dynamic range.
_It was changed to ₉₉ , V ₁₀ . Table 2 shows the measurement results of the rise time τrise and the fall time τdecay of the liquid crystal when the liquid crystal shutter is driven using the signal waveform as described above.

[0032]

[Table 2]

From the results shown in Table 2, the following was found. (1) Regarding the rise time τrise of the liquid crystal, from the experimental results of the conventional drive signal shown in FIG. 3A and the drive signal shown in FIG. 3B, when applying a predetermined drive voltage to the liquid crystal, At the timing immediately before that, that is, in the OFF period, a constant voltage instead of 0V,
For example, when V ₁₀ = 2.16 V is applied, the rise time τrise of the liquid crystal becomes short. In the example of Table 2, in the case of TN liquid crystal, 0.9 ms to 0.3 ms
In the case of STN liquid crystal, it is shortened from 1.3 ms to 0.4 ms. This is because in a steady state before applying a predetermined drive voltage to the liquid crystal, the response to the drive voltage application becomes faster when the liquid crystal molecules are arranged with a certain tilt angle. That is, in the case shown in FIG. 3A, in the steady state before the application of the drive voltage, since the voltage is not applied to the liquid crystal, the tilt angle of the liquid crystal molecule is almost 0 except when the pretilt angle is applied. Has become. On the other hand, in the case of FIG. 3B, since the liquid crystal has a certain tilt angle in the steady state immediately before the voltage application, it is considered that the liquid crystal changes quickly when the same drive voltage is applied. .

Further, the drive signal shown in FIG.
From the comparison with the drive signal shown in (c), it was confirmed that the higher the absolute value of the drive voltage applied to the liquid crystal, the shorter the rise time τrise of the liquid crystal.

From the above results, the liquid crystal rise time τri
Regarding se, τrise can be shortened by applying a voltage such that the liquid crystal is aligned with a certain tilt angle in the immediately preceding steady state and then driving it so that a high drive voltage is applied. it can.

(2) Regarding the fall time τdecay of the liquid crystal
Then, when the drive signal shown in FIG.
From the comparison when the drive signal shown in 3 (c) is used, it turns on
When switching from the OFF state to the OFF state,
When the applied voltage to the liquid crystal is lower in the steady state of
It was found that the crystal fall time τdecay was low.
That is, in the case of the signal waveform shown in FIG.
Voltage applied to liquid crystal immediately before switching from OFF state to OFF state
Is Vmax = 16.8V in the case of TN liquid crystal, and FIG.
In the case of the signal waveform shown in (c), V ₉₉= 5.10V
is there. Then, the fall time τdecay is as shown in FIG.
In the case of the signal waveform of 17.0 ms, while in FIG.
In the case of the signal waveform of (c), it is shortened to 15.0 ms.
There is. Similarly, when STN liquid crystal is used,
Fall time τdecay from 13.0ms to 12.6ms
Has been shortened. From this result, the state from ON to OFF
When switching to the state, the liquid in the ON state immediately before the voltage is cut off.
It turned out that the smaller the crystal tilt angle, the faster the liquid crystal response
did.

According to the above results, the waveform shown in FIG. 1 was obtained as the drive signal waveform of the liquid crystal shutter. Figure 1 (a)
FIG. 1 is a waveform diagram showing a first example of drive signal waveforms.
FIG. 1B is a signal waveform diagram according to the second example.
FIG. 1C is an operation diagram showing an open / closed state of the liquid crystal shutter driven by the drive signals shown in FIGS. 1A and 1B.

The drive signal shown in FIG. 1A is supplied during the ON period.
In addition, the drive signal S of the voltage Vmax for driving the liquid crystal
₁And a previous signal S having a voltage Va lower than Vmax.₂
Composed of and. In the OFF period, the liquid crystal
Shut-off signal S for holding the₃And more
The absolute value is smaller than the drive voltage Vmax for driving the liquid crystal.
Signal S immediately before voltage Vb_FourComposed of and. here
And drive signal S₁And shutoff signal S₃Is applied to the liquid crystal
A certain amount of molecules are generated by the action of the electric field generated by the applied voltage.
It is set by finding a period sufficient for the arrangement state.
Therefore, the signal S during the ON / OFF period₁, S₃Sign of
The remaining period of the additional period is the immediately preceding signal S.₂, S _FourApplication period
Becomes

The operation of the normally white mode liquid crystal shutter using this drive signal is performed as follows. First, when switching from the OFF state to the ON state, immediately before the switching, the immediately preceding signal S ₄ of the voltage Vb is applied to the electrode of the liquid crystal shutter. As a result, the liquid crystal molecules change their alignment state by an amount corresponding to the voltage Vb, and are aligned with a slight tilt angle with respect to the top and bottom of the substrate. After that, the signal S ₁ having the voltage Vmax is subsequently applied. As a result, the liquid crystal is aligned with a predetermined tilt angle under the influence of the electric field from the electrodes. By the driving operation of the liquid crystal, the liquid crystal shutter is switched from the open state to the closed state. When the liquid crystal shutter is in the ON state, that is, in the closed state, the previous signal S ₂ is applied to the electrodes. Since the voltage Va of the immediately preceding signal S ₂ is smaller than the voltage Vmax of the drive signal S ₁ , the alignment of the liquid crystal changes so that the tilt angle of the liquid crystal decreases according to the decrease in the voltage.

At the time of switching from the ON state to the OFF state, the cutoff signal S ₃ is given and the voltage application to the electrodes of the liquid crystal shutter is cut off. As a result, the liquid crystal molecules are arranged in the no-voltage state, and the liquid crystal shutter is switched to the OFF state, that is, the open state.

For the drive signal as described above, specifically, when a TN liquid crystal is used, the ON / OFF period is 16.7.
In ms, the voltage Vmax of the drive signal S ₁ is ± 16.8.
V, the application period is 2 ms, the voltage Va of the previous signal S ₂ is ±
2.16V, application period is 14.7Ms, shutdown signal S ₃ to 0V, application period is 10.0 ms, further immediately before the signal S ₄ is ± 2.16V, application period is set to 6.7 ms. In this case, the tilt angle of the TN liquid crystal when the drive signal S _{1 is} applied is 8
The angle was 8.5 °, and the tilt angle at the time of applying the immediately previous signal S ₂ was 81.6 °. The light transmittance at this time is
Transmittance of 34% for each incident light with wavelength of 550 nm
And 0.34%. The rise time τrise of the liquid crystal at the time of switching from the OFF state to the ON state is 0.3 m.
s, and the fall time τdecay from the ON state to the OFF state was 15.0 ms.

Further, the signal waveform shown in FIG. 1 (b), is due to the second example of the drive signal waveform according to the present invention, with respect to the signal waveform shown in FIG. 1 (a), the drive signal S _1, The voltage is changed so that the positive / negative of the voltage of the immediately-preceding signal S ₄ applied immediately before that is reversed. Even with such a signal waveform, the same effect as that of the signal waveform of FIG. 1A can be obtained.

Further, FIG. 2 is a signal waveform diagram according to another example corresponding to the signal waveform shown in FIG. 1, and is a signal waveform diagram when the liquid crystal is AC driven within one ON period or one OFF period. is there. The drive signal shown in FIG. 2 (a) corresponds to the drive signal shown in FIG. 1 (a), and the signal waveform shown in FIG. 2 (b) corresponds to the signal waveform shown in FIG. 1 (b). Then, in FIGS. 2A and 2B, the drive signal S
₁ has an AC voltage waveform of voltage Vmax, and the previous signal S
₂ is configured to have an alternating voltage waveform of voltage Va.

The immediately preceding signals S ₂ and S ₄ may be voltages having the same absolute value or different voltages.
Further, both need not be constant voltages, and may be set to have a waveform that gradually changes.

Next, an example in which the present invention is applied to an image stereoscopic vision system using liquid crystal shutter glasses shown in FIG. 5 will be described. This system includes a display device 1 for displaying a stereoscopic image and glasses 2 for stereoscopic image viewing. The display device 1 alternately displays the viewer's right-eye image 1a and left-eye image 1b in a time division manner. Also, glasses 2
Includes a liquid crystal shutter 3 for the left eye and a liquid crystal shutter 4 for the right eye. The liquid crystal shutters 3 and 4 for the right eye and the left eye respectively open and close in synchronization with the time-divisional display of the images 1a and 1b for the right eye and the left eye of the display device 1, respectively. For example, as shown in FIG. 5, when the image 1a for the right eye is displayed on the display device 1, the liquid crystal shutter 3 for the left eye is closed and the liquid crystal shutter 4 for the right eye is opened at the same time. When the image 1b for the left eye is displayed on the display device 1 at the next timing, the liquid crystal shutter 4 for the right eye of the glasses 2 is closed, and at the same time, the liquid crystal shutter 3 for the left eye is opened. By repeating such an operation, the right-eye image and the left-eye image 1b are transmitted to the right eye and the left eye of the viewer, so that the viewer can see a stereoscopic image in which the right-eye image and the left-eye image are combined. You can see the image.

In such image stereoscopic glasses 2, by using a drive signal that gives the immediately preceding signals S ₂ and S ₄ in the steady state immediately before the switching of the ON / OFF state, the switching is performed. The rise time τrise and the fall time τdecay can be shortened. As a result, it is possible to instantaneously switch the liquid crystal shutters 3 and 4 for the right eye and the left eye, and it is possible to prevent the left eye image or the right eye image from being mixed into the right eye of the viewer. This makes it possible to see a clear stereoscopic image.

The driving method of the liquid crystal device according to the present invention can be applied not only to the above-mentioned liquid crystal shutter and the liquid crystal shutter glasses for stereoscopic viewing but also to a general liquid crystal display device. it can.

[0048]

As described above, according to the method for driving a liquid crystal device of the present invention, a voltage having an absolute value smaller than a predetermined voltage is applied in advance in a steady state immediately before switching between transmission and blocking of light. After that, since the voltage applied to the electrodes is switched, the rise time or fall time of the liquid crystal is shortened, and a liquid crystal device having excellent responsiveness can be obtained. Therefore, according to the present invention, the contrast can be improved in the light transmitting state and the light blocking state.

[Brief description of drawings]

FIG. 1 is a signal waveform diagram (a) showing a first example of a drive signal applied to an electrode of a liquid crystal device according to an embodiment of the present invention, FIG.
3B is a signal waveform diagram showing an example of FIG. 3B and an operation diagram showing an open / closed state of the liquid crystal shutter.

FIG. 2 is an AC drive waveform diagram (a) and (b) according to still another example of drive waveforms of the liquid crystal device according to the embodiment of the present invention.

FIG. 3 is a signal waveform diagram (a) used in an experiment in the present invention.
~ (D).

FIG. 4 is a correlation diagram of applied voltage and transmittance of the liquid crystal shutter to which the drive signal shown in FIG. 3 is applied.

FIG. 5 is a conceptual diagram of an image stereoscopic system to which the present invention is applied.

6A and 6B are cross-sectional structural views for explaining the structure and operation principle of a general liquid crystal shutter, FIG. 6A is a light transmission state diagram, and FIG. 6B is a light blocking state diagram.

FIG. 7 is a drive signal waveform diagram used in a conventional liquid crystal shutter and an opening / closing operation diagram of the liquid crystal shutter.

FIG. 8 is a drive signal waveform according to another example used in a conventional liquid crystal shutter.

[Explanation of symbols]

S ₁ ... drive signal S ₂ , S ₄ ... immediately preceding signal S ₃ ... shut-off signal

Claims (8)

[Claims] 1. A method of driving a liquid crystal device, wherein a first operation period having at least a period in which a predetermined voltage is applied and a second operation period having at least a period in which no voltage is applied are repeated. A method for driving a liquid crystal device, wherein there is a period in which a voltage different from the predetermined voltage is applied in the first operation period or the second operation period. 2. A method of driving a liquid crystal device, wherein a first operation period having at least a period in which a predetermined voltage is applied and a second operation period having at least a period in which no voltage is applied are repeated. In the first operation period, after applying the predetermined voltage, a voltage whose absolute value is smaller than the predetermined voltage is applied, and subsequently switching to the second operation period is performed. Driving method. 3. A method of driving a liquid crystal device, wherein a first operation period having at least a period in which a predetermined voltage is applied and a second operation period having at least a period in which no voltage is applied are repeated. In the second operation period, after a period in which no voltage is applied, a voltage having an absolute value smaller than the predetermined voltage in the first operation period is applied, and subsequently, switching to the first operation period is performed. And a method for driving a liquid crystal device. 4. A pair of translucent substrates which are arranged to face each other, a pair of electrodes which are arranged to face each other inside the pair of translucent substrates, and a liquid crystal which is sealed between the pair of electrodes. And transmitting and blocking light by repeating a first operation period having a period in which at least a predetermined voltage is applied between the pair of electrodes and a second operation period having at least a period in which no voltage is applied. A driving method of a liquid crystal device, which is repeatedly performed in each of the first and second operation periods, wherein a predetermined voltage is applied between the pair of electrodes in the first operation period, and then the predetermined operation is performed. A voltage having a smaller absolute value than the voltage is applied, and when switching from the first operation period to the second operation period, the voltage having the smaller absolute value is continuously applied to the pair of electrodes. , Do not apply voltage Wherein the switching state, the driving method of a liquid crystal device. 5. A pair of translucent substrates arranged opposite to each other, a pair of electrodes opposed to each other inside the pair of translucent substrates, and a liquid crystal sealed between the pair of electrodes. And transmitting and blocking light by repeating a first operation period having a period in which at least a predetermined voltage is applied between the pair of electrodes and a second operation period having at least a period in which no voltage is applied. A driving method for a liquid crystal device, wherein the first operation is performed after a period in which a voltage is not applied to the pair of electrodes in the second operation period. A voltage whose absolute value is smaller than the predetermined voltage during the period is applied, and when the second operation period is switched to the first operation period, the voltage whose absolute value is smaller is applied to the pair of electrodes. Pulled from the state Subsequently, characterized in that the switching state of applying the predetermined voltage, the driving method of a liquid crystal device. 6. A pair of translucent substrates arranged opposite to each other, a pair of electrodes opposed to each other inside the pair of translucent substrates, and a liquid crystal sealed between the pair of electrodes. And transmitting and blocking light by repeating a first operation period having a period in which at least a predetermined voltage is applied between the pair of electrodes and a second operation period having at least a period in which no voltage is applied. A driving method of a liquid crystal device, which is repeatedly performed in each of the first and second operation periods, wherein a predetermined voltage is applied between the pair of electrodes in the first operation period, and then the predetermined operation is performed. A first voltage having a smaller absolute value than the voltage is applied, and when switching from the first operation period to the second operation period, the first voltage is applied to the pair of electrodes No voltage is applied subsequently Switching to a state, in the second operation period, after a period in which no voltage is applied to the pair of electrodes, a second voltage whose absolute value is smaller than the predetermined voltage in the first operation period is applied, Further, at the time of switching from the second operation period to the first operation period, the state in which the second voltage is applied to the pair of electrodes is continuously switched to the state in which the predetermined voltage is applied. A method for driving a liquid crystal device, comprising: 7. The liquid crystal device according to claim 4, wherein the liquid crystal device is a liquid crystal shutter further having a pair of polarizing plates arranged outside or inside the pair of translucent substrates. The method for driving a liquid crystal device according to any one of claims. 8. The liquid crystal device is a pair of liquid crystal shutters further having a pair of polarizing plates arranged outside or inside the pair of translucent substrates, and is stereoscopic image glasses. The method for driving the liquid crystal device according to claim 4, wherein