KR20150006746A - An autostereoscopic display apparatus and a control method thereof - Google Patents

Abstract

The present invention is to provide a three-dimensional image display device which can smoothly provide a three-dimensional image even though a user′s position moves and a method for controlling the same. For this, according to the present invention, the three-dimensional image display device comprises: one side electrode including at least one or more extension electrodes which are spaced apart from each other; the other side electrode including at least one or more extension electrodes which are spaced apart from each other; a liquid crystal part disposed between the one side electrode and the other side electrode to form a barrier pattern according to an electric field or potential difference which is selectively generated between the one side electrode and the other side electrode; and a terminal part which independently applies a voltage or pulse to each of the one side electrode and the other side electrode. At least two or more extension electrodes of the other side electrode are disposed to overlap one extension electrode of the one side electrode. The barrier pattern formed on the liquid crystal part can be changed in arrangement according to the applied states of the voltage or pulse applied to each of the one side electrode and the other side electrode.

Description

[0001] The present invention relates to a stereoscopic image display apparatus and a control method thereof,

The present invention relates to a stereoscopic image display apparatus and a control method thereof, and more particularly, to a stereoscopic image display apparatus and a control method thereof that can smoothly provide a stereoscopic image despite the movement of a user.

The development of information and communication technology enables multimedia services supporting two-dimensional video and voice to digital terminals that process text, voice, and images at high speed, and is a three-dimensional stereoscopic information communication service providing realistic multimedia service in the future It is expected to be developed.

Generally, a stereoscopic image expressing three dimensions is made by the principle of stereoscopic viewing through two eyes. An important factor of the stereoscopic effect is the parallax of the two eyes, which is shown because the human eyes are about 65 mm apart.

Therefore, when the two eyes of the right and left eyes see different two-dimensional images, and the two images are transmitted to the brain through the retina, the brain fuses them to reproduce the depth sense and real feeling of the original three-dimensional image. This is commonly referred to as stereography.

The stereoscopic image display device can be broadly divided into a stereoscopic stereoscopic image display device and an autostereoscopic stereoscopic image display device depending on the wearing of spectacles.

However, the non-eye-tight stereoscopic image display device can feel a stereoscopic image by simply looking at the screen directly without wearing the above-described glasses, Since the disadvantage of the stereoscopic image display device can be solved, much research has been conducted on this.

 The non-eye-hardened stereoscopic image display device is broadly divided into a lenticular type device and a parallax-barrier type device.

The operation of the conventional stereoscopic image display apparatus according to the parallax-barrier system will be described with reference to Figs. 1 and 2 (see Korean Patent No. 10-0647517).

The stereoscopic image display apparatus according to the conventional parallax barrier system displays the left side image L and the right side image R toward the vertical direction (YY 'direction in FIG. 2) corresponding to the left and right eyes respectively in the horizontal direction And a vertical bar-shaped shielding film called a barrier (barrier) 20 at the front end thereof.

The display module 10 and the barrier 20 are arranged such that the light corresponding to the left image L is incident only on the left eye and the light corresponding to the right image R is incident on the right eye only. And two divided left and right images (L, R) are separated and observed, thereby giving a feeling of three-dimensional feeling.

 In the parallax-barrier system using the conventional liquid crystal module, a barrier is formed in the form of a vertical bar arranged side by side in the horizontal direction, and one segment terminal (S) and one common terminal (C) are connected to all the pixels Since all the pixels are controlled to be ON / OFF simultaneously, the arrangement direction of the barriers is fixed, and stereoscopic images can be viewed only on a screen displaying an image in a predetermined direction.

If the user changes the position of the eye by moving the head or body, the left image is recognized in the right eye, and the right image is recognized in the left eye, resulting in a reverse image.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a stereoscopic image display device and a control method thereof that can smoothly provide a stereoscopic image despite the movement of a user.

According to an aspect of the present invention, there is provided a plasma display panel including: a first electrode having at least one extension electrode spaced apart from each other; An other electrode having at least one other extended electrode spaced apart from each other; A liquid portion provided between the one side electrode and the other side electrode to form a barrier pattern in accordance with an electric field or a potential difference selectively formed therebetween; And a terminal portion for applying a voltage or a pulse independently to the one electrode and the other electrode, wherein each one extending electrode and each of the other extending electrodes are overlapped one by one, The other electrode or one extension electrode of the one electrode or the one extension electrode corresponding to the one electrode or the one extension electrode,

The voltage or pulse applied to the one electrode and the other electrode And the barrier pattern arrangement state formed in the liquid crystal unit can be changed according to an applied state.

According to another aspect of the present invention, there is provided a plasma display panel comprising: an upper electrode module including an upper one side electrode having at least one upper one side extension electrode spaced apart and at least one upper side side electrode having at least one upper side extension electrode spaced from each other;

A lower electrode module including a lower one side electrode having at least one lower one side extension electrode spaced apart and at least one lower side side electrode having at least one lower side extension electrode spaced from each other;

A liquid portion provided between each of the one side electrodes and each of the other side electrodes so as to form a barrier pattern in accordance with an electric field or a potential difference selectively formed therebetween;

An insulator disposed between the upper electrode module and the lower electrode module to prevent current flow between the upper electrode module and the lower electrode module;

And a terminal unit for independently applying a voltage or a pulse to the one side electrode and the other side electrode,

Each of the upper or lower extension electrodes and each of the upper or lower extension electrodes are overlapped one by one, and each of the one or the other extension electrodes is connected to the other one or the other extension And is arranged so as to be able to be energized with an electrode so that the same voltage or pulse can be applied,

The voltage or pulse applied to the one electrode and the other electrode And the barrier pattern arrangement state formed in the liquid crystal unit can be changed according to an applied state.

According to another aspect of the present invention, there is provided a plasma display panel comprising: an upper electrode module including an upper one side electrode having at least one upper one side extension electrode spaced apart and at least one upper side side electrode having at least one upper side extension electrode spaced from each other;

A lower one side electrode having at least one lower one side extension electrode spaced apart from each other and at least one lower side side extension electrode spaced apart from each other and arranged in a direction orthogonal to the arrangement direction of the upper electrode module A lower electrode module;

A liquid portion provided between each of the one side electrodes and each of the other side electrodes so as to form a barrier pattern in accordance with an electric field or a potential difference selectively formed therebetween;

An insulator disposed between the upper electrode module and the lower electrode module to prevent current flow between the upper electrode module and the lower electrode module;

And a terminal unit for independently applying a voltage or a pulse to the one side electrode and the other side electrode,

Each of the upper or lower extension electrodes and each of the upper or lower extension electrodes are overlapped one by one, and each of the one or the other extension electrodes is connected to the other one or the other extension And is arranged so as to be able to be energized with an electrode so that the same voltage or pulse can be applied,

The voltage or pulse applied to the one electrode and the other electrode And the barrier pattern arrangement state formed in the liquid crystal unit can be changed according to an applied state.

The present invention also relates to a method of recognizing a position of a user's eye or a position of a head,

And a plurality of steps of changing the arrangement state of the parallax barrier in accordance with the change,

Wherein changing the arrangement of the barrier comprises:

One of the extension electrodes provided on the one side electrode disposed in the parallax barrier and the other electrode overlapping the one extension electrode are connected to a voltage or pulse signal And controlling the barrier pattern arrangement state to be changed according to the state,

Each of the one extension electrode and each of the other extension electrodes overlaps one by one, and each one or the other extension electrode is connected to the other extension electrode or the one extension electrode of the one extension electrode, So that the same voltage or pulse can be applied to the three-dimensional image display device.

According to the present invention, even when the user's position changes and the position of the eyes changes, there is an advantage that the stereoscopic image screen can be stably provided continuously corresponding to the degree of change.

That is, the arrangement state of the parallax barrier is not fixed, but can be changed corresponding to the positional change of the eye.

Accordingly, the left-eye screen is continuously recognized in the left eye, the right-eye screen is recognized in the right eye, and the reverse-phase formation due to the change in eye position can be prevented while preventing the crosstalk screen in which the left- have.

A specific extension electrode is overlapped with a specific one extension electrode, the other extended extension electrode adjacent to the other extended extension electrode is selectively energized with a specific extension electrode, and a selective potential difference is formed between the overlap extension electrodes, The barrier pattern can be moved in accordance with the formation.

On the other hand, by arranging a plurality of electrode modules in a laminated form, and by forming a selective potential difference after partially overlapping each of the electrode modules, it is possible to control the barrier movement more precisely.

In addition, in the case where the liquid crystal panel and the electrode module are stacked in multiple, and the liquid crystal panel and the electrode module are made to be in an orthogonal state in the arrangement direction, the landscape mode and the portrait mode are selectively enabled, thereby enabling flexible operation of the stereoscopic image device.

1 is a cross-sectional view of a stereoscopic image display apparatus using a conventional parallax barrier.
2 is a perspective view of a stereoscopic image display apparatus using a conventional parallax barrier.
3 is a structural view of a stereoscopic image display apparatus using a parallax barrier of the stereoscopic image display apparatus according to the present invention.
4 is a photograph of a parallax barrier and a terminal portion of the stereoscopic image display device according to the present invention.
5 is a front view of one side electrode constituting a parallax barrier of a first embodiment of a stereoscopic image display device according to the present invention.
6 is a front view of the other electrode constituting the parallax barrier of the first embodiment of the stereoscopic image display device according to the present invention.
7 is a front view of a parallax barrier of a stereoscopic image display apparatus according to a first embodiment of the present invention in which the other electrode and one electrode are laminated.
8 is a plan sectional view showing the arrangement state of the parallax barrier in the first embodiment of the parallax barrier of the stereoscopic image display device according to the present invention.
9 is a front view of one side electrode and the other side electrode according to the first embodiment of the parallax barrier of the stereoscopic image display apparatus according to the present invention.
10 is a table showing states of the first to fourth stages and control signals in the first embodiment of the parallax barrier of the stereoscopic image display apparatus according to the present invention.
11 is a front view of one side electrode constituting a parallax barrier of a second embodiment of a stereoscopic image display device according to the present invention.
12 is a front view of the other electrode constituting the second embodiment of the parallax barrier of the stereoscopic image display device according to the present invention.
13 is a front view of a parallax barrier of a stereoscopic image display apparatus according to a second embodiment of the present invention in which the other electrode and one electrode are laminated.
14 is a front view of one side electrode constituting a parallax barrier of a third embodiment of the stereoscopic image display device according to the present invention.
15 is a front view of the other electrode constituting the parallax barrier of the third embodiment of the stereoscopic image display apparatus according to the present invention.
FIG. 16 is a front view of a parallax barrier of a third embodiment of the present invention in which the other electrode and one electrode are laminated. FIG.
17 is a front view of one side electrode constituting a fourth embodiment of the parallax barrier of the stereoscopic image display device according to the present invention.
18 is a front view of the other electrode constituting the fourth embodiment of the parallax barrier of the stereoscopic image display apparatus according to the present invention.
19 is a front view of a parallax barrier of a stereoscopic image display apparatus according to a fourth embodiment of the present invention in which the other electrode and one electrode are laminated.
20 is a plan sectional view showing a state in which a first electrode module and a second electrode module constituting a fifth embodiment of the parallax barrier of the stereoscopic image display device according to the present invention are laminated.
FIG. 21 shows the state of movement of the barrier pattern in each step in the fifth embodiment of the parallax barrier of the stereoscopic image display apparatus according to the present invention, and the control signal table corresponding thereto.
22 is a plan sectional view showing the moving state of the barrier pattern for each step in the fifth embodiment of the parallax barrier of the stereoscopic image display apparatus according to the present invention.
23 is a view showing a sixth embodiment of the parallax barrier of the stereoscopic image display apparatus according to the present invention.
FIG. 24 shows a laminated state of the electrode modules and a barrier pattern according to the sixth embodiment of the parallax barrier of the three-dimensional image display device according to the present invention.
FIG. 25 is a front view showing a state in which a barrier pattern appears in the landscape mode and the portrait mode related to the sixth embodiment of the parallax barrier of the three-dimensional image display device according to the present invention, It is a table shown.

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

FIG. 3 schematically shows components of a parallax barrier and a stereoscopic image display device including the parallax barrier according to the present invention.

The parallax barrier 200 according to the present invention includes one electrode 300, a liquid crystal unit 400, the other electrode 500, and a polarizing film 600.

The one side electrode 300 may function as an upper electrode or a front electrode. In this case, the other electrode 500 functions as a lower electrode or a rear electrode.

In contrast, the other electrode 500 may function as an upper electrode or a front electrode. In this case, the one electrode 300 functions as a lower electrode or a rear electrode.

The liquid crystal layer 400 is provided with a liquid crystal layer therein. A barrier pattern can be formed on the liquid crystal part 400 according to a potential difference or an electric field between the one side electrode 300 and the other side electrode 500.

In addition, the parallax barrier 200 according to the present invention and the stereoscopic image display device including the parallax barrier 200 form a barrier pattern using a liquid crystal panel such as a TN-LCD or an STN-LCD. In the 2D mode, So that a 3D image can be viewed. In 3D mode, a barrier can be turned on to allow a viewer to view a stereoscopic image.

4 is a photograph of a parallax barrier 200 according to the present invention.

In the parallax barrier 200, a terminal portion 210 is provided. In the terminal portion, independent electrode terminals to which voltages or pulses are independently applied are disposed, respectively. These independent terminals are electrically connected to the one side electrode 200, So that a voltage can be independently applied to the other electrode (500).

In FIG. 4, the terminal portion 210 is composed of four electrode terminals (C1 to C4), but the number is not limited thereto. Here, each terminal is characterized in that a signal is independently applied regardless of the operation of the other terminal.

Fig. 5 shows the structure of the one side electrode 300 constituting the parallax barrier 200. Fig.

5, the one side electrode 300 includes a first side electrode 310, a second side electrode 320, a third side electrode 330, (340).

The electrodes 310 to 340 are spaced apart from each other by a predetermined pattern.

The one side electrode 300 is preferably a transparent electrode such as ITO for smooth transmission of light.

First to fourth electrode terminals C1 to C4 for applying a voltage signal or a pulse signal to the first to fourth electrodes 310 to 340 are provided on the side of the one electrode 300, respectively.

The first electrode terminal C1 is electrically connected to the first electrode 310 and the second electrode terminal C2 is electrically connected to the second electrode 320. [

The third electrode terminal C3 is electrically connected to the third electrode 330 and the fourth electrode terminal C4 is electrically connected to the second electrode 340. [

First, the specific components and arrangement of the first electrode 310 will be described.

The first one side electrode 310 includes a first side connection electrode 311 connected to the first side electrode terminal C1 and a first side side guide electrode 312 connected to the first side connection electrode 311. [ And a first extended electrode 313 spaced apart from the first one side guide electrode 312 and extending in a specific direction (downward in this figure).

The first extension electrode 313 and the first one side guide electrode 312 are not connected but spaced apart from each other and a third one side guide electrode 332 to be described later is disposed therebetween.

The connection between the first extension electrode 313 and the first one side guide electrode 312 is made by a first other contact electrode 514 to be described later.

At this time, it is preferable that an insulator (not shown) performing an insulation function is disposed at a portion of the third one side guide electrode 332 covered by the first other side contact electrode 514 so as not to conduct current.

A first one side contact electrode 314, which is in contact with the first other side contact electrode 514 and can be in contact with the first other side contact electrode 514, is provided at the upper end of the first one side extension electrode 313 .

The first one side contact electrode 312 also has a first side contact portion 312a corresponding to the width of the first side contact electrode 314 and capable of being in electrical contact with the first other side extending electrode 513, .

The width of the first one side contact electrode 314 is wider than the width of the first one side extension electrode 313 and the width of the first one side extension electrode 343 and the first one side extension electrode 313 ) And the width of the pattern therebetween.

The specific components and arrangement of the second one side electrode 320 will be described.

The second one side electrode 320 includes a second one side connection electrode 321 connected to the second one side electrode terminal C2 and a second one side side connection electrode 322 connected to the second one side connection electrode 321. [ And a second one-side extension electrode 323 spaced apart from the second one-side guide electrode 322 and extending in a specific direction (upward in this figure).

The second one side extension electrode 323 and the second one side guide electrode 322 are not connected but spaced apart from each other and a fourth one side guide electrode 342 to be described later is disposed therebetween.

The connection between the second one extension electrode 323 and the second one side guide electrode 322 is made by a second other contact electrode 524 to be described later.

At this time, it is preferable that an insulator is disposed on the fourth one side guide electrode 342 covered by the second other side contact electrode 524 so as not to be energized.

The second one-side extended electrode 323 is preferably formed in a shape of '┛'. A second one-side contact electrode 324, which can be in contact with the second other-side contact electrode 524, .

The second one side contact electrode 322 also has a second one side contact portion 322a which corresponds to the width of the second one side contact electrode 324 and can be in electrical contact with the second other side extending electrode 523, .

The width of the second one side contact electrode 324 is wider than that of the second one side extension electrode 323 and the width of the second one side extension electrode 313 and the first one side extension electrode 313 ) And the width of the pattern therebetween.

Concrete components and arrangements of the third one side electrode 330 will be described.

The third side electrode 330 includes a third side connection electrode 331 connected to the third side electrode terminal C3 and a third side side guide electrode 332 connected to the third side connection electrode 331. [ And a third extended electrode 333 connected to the third one side guide electrode 332 and extending in a specific direction (downward in this figure).

The third one side guide electrode 332 may be disposed inside the first one side guide electrode 312 and the third one side connection electrode 331 may be disposed further than the first one side connection electrode 311 have.

A third one side contact electrode 334, which can be in contact with the third side contact electrode 534 to be described later, may be provided at the upper end of the third side extension electrode 333. ) Is preferably provided.

The width of the third one side contact electrode 334 is wider than that of the third one side extension electrode 333 and the width of the third one side contact electrode 334 is larger than the width of the second one extension electrode 323 and the first one extension electrode 313 ) And the width of the pattern therebetween.

The third one side contact electrode 332 may be formed with a groove so that the first side contact electrode 314 may be disposed.

Lastly, the specific components and arrangement of the fourth one side electrode 340 will be described.

The fourth one side electrode 340 includes a fourth one side connection electrode 341 connected to the fourth electrode terminal C4 and a fourth one side side guide electrode 342 connected to the fourth one side connection electrode 341, And a fourth extended electrode 343 directly connected to the fourth one side guide electrode 342 and extending in a specific direction (upward in this figure).

The fourth one side guide electrode 342 is disposed inside the second one side guide electrode 322 and the fourth one side connection electrode 341 is disposed inside the second one side connection electrode 321 desirable.

A fourth one side contact electrode 344 which can be in contact with the fourth other side contact electrode 544, which will be described later, is provided at the lower end portion of the fourth side extension electrode 343. [ ) Is preferably provided.

The width of the fourth one side contact electrode 344 is wider than the width of the fourth one side extension electrode 343 and the width of the third one side extension electrode 333 and the fourth one side extension electrode 313 ) And the width of the pattern therebetween.

The first to fourth extension electrodes 313, 323, 333, and 343 are sequentially disposed on the one side electrode 300 and the order is repeatedly implemented.

The first to fourth extension electrodes 313, 323, 333, and 343 are preferably spaced apart from each other.

In Fig. 5, a portion A indicated by a dotted rectangle is a valid active region in which a barrier pattern is effectively formed.

6 shows the electrode 500 on the other side.

The other electrode 500 includes first to fourth other extension electrodes 513, 523, 533 and 543 and first to fourth extension electrodes 513, 523, 533 and 543 are provided on the upper and lower ends of the other extension electrodes 513, Four other-side contact electrodes 514, 524, 534 and 544 are provided.

Here, the first other extension and contact electrodes 513 and 514 and the third other extension and contact electrodes 533 and 534 are preferably provided in the form of '┏', and the second other extension and contact electrodes 523, 524 and the fourth other extension and contact electrodes 543, 544 are provided in the form of "┗".

On the other hand, the width of each of the other contact electrodes 514 to 544 corresponds to the sum of the widths of the specific extended electrode and the adjacent extended electrode connected thereto.

The height of the first and second other-side contact electrodes 514 and 524 is larger than that of the third and fourth other-side contact electrodes 534 and 544.

As described above, since the first and second extension electrodes 313 and 323 are spaced apart from the first and second one-side guide electrodes 312 and 322, the first and second extension electrodes 313 and 323 are electrically connected to each other, And is connected to the first and second other extension electrodes 513 and 523 so as to be energized.

Therefore, the first and second contact electrodes 514 and 524 are electrically connected to the first and second contact electrodes 314 and 324 and the first and second contact members 312a and 322a .

Similarly, the third and fourth other-side contact electrodes 534 and 544 are energetically contacted with the third and fourth one-side contact electrodes 334 and 344 shown in FIG.

By this connection, the first extension electrode 313 and the first extension electrode 513 are connected in such a manner that they can be energized. This is the same for elongated electrodes of other orders.

In Fig. 6, a portion (A) indicated by a dotted rectangle is a valid active region in which a barrier pattern is effectively formed.

FIG. 7 is a front view of a state in which one electrode 300 of FIG. 5 and the other electrode 500 of FIG. 6 are overlapped. FIG. 8 (a) And the signals applied to the terminals are summarized by the steps of moving the barrier pattern.

9 shows a state in which the one side electrode 300 and the other side electrode 500 are separated from each other while maintaining their overlapping positions.

Hereinafter, the overlapping structure will be described in detail with reference to FIGS. 7 to 9. FIG.

In this embodiment, one electrode 300 and one electrode 500 overlap to form one electrode module.

One of the extension electrodes is superimposed on the other extension electrode in a completely overlapping manner rather than partially overlapping.

The concrete form of overlap is as follows.

The first extension electrode 313 overlaps with the second extension electrode 523 and the second extension electrode 323 overlaps with the third extension extension electrode 533.

The third extension electrode 333 overlaps with the fourth extension electrode 543 and the fourth extension electrode 343 overlaps with the first extension electrode 513.

That is, one extension electrode of a specific order is not overlapped with the other extension electrode of the same order, but overlaps with the other extension electrode of the sequence number after the specific order.

It can be also summarized that the other extension electrodes of the same order number are arranged in a form of one-by-one difference with respect to one extension electrode of a specific sequence number.

The first extended electrode 313 and the first extended electrode 513 may be disposed adjacent to each other when viewed from the front or rear of the superimposed structure.

Under such a configuration, the first other-side contact electrode 514 contacts with the first one-side contact electrode 314 and the first one-side contact portion 312a so as to be energized.

As a result, the first extension electrode 313 and the first extension electrode 513 can be energized, so that the same voltage or pulse signal is applied to each other.

This is also true of one extension electrode and the other extension electrode of another sequence.

As described above, the overlapping and the voltage or pulse Depending on the change of the applied state, the barrier arrangement state may change.

The change of the barrier pattern reflects the change of the position of the user's line of sight of the stereoscopic image display device according to the present invention so that the stereoscopic image is not formed in a reversed phase despite the change of the position of the line of sight.

 With reference to FIG. 8 (b) and FIG. 10, a change in the arrangement of the barrier pattern according to the selective application of the voltage in the change of the line-of-sight direction of the user in the first embodiment will be described.

10 (a) to 10 (d) show the first to fourth steps of the barrier pattern arrangement.

The first row in the table is the front view of the barrier array, the second row is the side view of the barrier array, and the third row shows the control signal state.

In the driving signal, 'L' is a high potential voltage, 'H' is a low potential voltage, and when H and L overlap each other, a barrier pattern is formed on the liquid portion.

The first electrode terminal C1 applies a voltage or a pulse signal to the first and second extended electrodes 313 and 513 and the second electrode terminal C2 to the second and other extended electrodes 323 and 523.

The third electrode terminal C3 applies a voltage or a pulse signal to the third and fourth extension electrodes 333 and 533 and the fourth electrode terminal C4 to the fourth and other extension electrodes 343 and 543.

When power is applied for the first stage barrier arrangement, as shown in Fig. 10 (a), between the first one extension electrode 313 and the second other extension electrode 523 and between the second one extension electrode 323 and the third other-side extended electrode 533 so that a barrier pattern is formed.

At this time, a voltage of a low (high) potential is applied to the second extension electrode 323 and the second extension electrode 523, and a high (low) voltage is applied to the remaining electrodes.

On the other hand, when a potential difference is not generated between the third one extension electrode 333 and the fourth other extension electrode 543, and between the fourth one extension electrode 343 and the first other extension electrode 513 The barrier pattern is not formed and this portion functions as a slit through which light is transmitted.

On the other hand, if the barrier pattern is moved by one space in the first-step state, the second-stage barrier arrangement is established.

10 (b), a low (high) voltage is applied to the third extension electrode 333 and the third extension electrode 533 and a high (low) voltage is applied to the remaining extension electrodes, It is preferable that a voltage is applied.

In this case, a barrier pattern is formed between the second one extension electrode 323 and the third other extension electrode 533, and between the third one extension electrode 333 and the fourth other extension electrode 543.

On the other hand, when the barrier pattern is moved by one space in the second-step state, the third-stage barrier arrangement is obtained.

10 (c), a low (high) voltage is applied to the fourth extension electrode 343 and a high (low) voltage is applied to the remaining extension electrodes 343, .

In this case, the barrier pattern is formed between the third one extension electrode 333 and the fourth other extension electrode 543, and between the fourth one extension electrode 343 and the first other extension electrode 513.

On the other hand, if the barrier pattern is moved by one space in the third-step state, the fourth-stage barrier arrangement is established.

10 (d), a low (high) voltage is applied to the first extension electrode 313 and a high (low) voltage is applied to the remaining extension electrodes 513 .

In this case, the barrier pattern is formed between the first one extension electrode 313 and the second other extension electrode 523, and between the fourth one extension electrode 343 and the first other extension electrode 513.

11 to 13 show a second embodiment of the present invention.

The configurations of the second embodiment and the first embodiment are almost the same.

The same reference numerals are used for the same components and the description thereof will be omitted for the sake of redundancy.

However, if there is a difference, the first one side guide electrode 312 and the second one side guide electrode 322, which were shown in Fig. 5 of the first embodiment, are not disposed on the one electrode.

Instead, as shown in FIG. 12, a first other-side guiding electrode 512 and a second other-side guiding electrode 522 are provided and directly connected to the first and second other-side contact electrodes 514 and 524, respectively .

11, the first one-side connection electrode 311 is electrically connected to the first other-side reference electrode 512. To this end, the first one-side connection electrode 311 is provided with a contact portion 311a.

The second one-side connection electrode 312 is also provided with a contact portion 321a for connection to the second other-side guide electrode 522.

When the one side electrode 300 and the other side electrode 500 shown in FIGS. 11 and 12 are overlapped, the overlapping structure as shown in FIG. 13 appears.

Here, the first one side contact electrode 314 and the first other side contact electrode 514 are in contact with each other, and the second one side contact electrode 324 and the second other side contact electrode 524 are in contact with each other.

The third one side contact electrode 334 and the third other side contact electrode 534 are in contact with each other and the fourth one side contact electrode 344 and the fourth other side contact electrode 544 are in contact with each other.

The final connection structure and the operation method of each electrode are the same as those shown in Figs. 7 to 10, so a detailed description thereof will be omitted.

14 to 16 show a third embodiment of the present invention.

The electrode arrangement structure of the third embodiment is almost the same as that of the first embodiment.

14 to 16, the first to fourth extension electrodes 313, 323, 333, and 343 and the first to fourth other extension electrodes 513, 523, 533, and 543 are spaced apart from each other, Unlike the first and second embodiments, is disposed obliquely to one side with respect to the vertical line.

When the extension electrodes are disposed in the inclined direction as described above, there is an advantage that the phenomenon of color distortion can be prevented.

The color distortion phenomenon will be described as follows.

When the extension electrodes of the other electrode and the one electrode are disposed in the same direction as the longitudinal direction of the R, G, and B subpixels of the display panel, only the image corresponding to the subpixels of different colors enters the right eye and the left eye.

In this case, when a left eye image and a right eye image are synthesized to recognize a 3D image, a color distortion phenomenon occurs in which only a specific color image is recognized.

In order to prevent this, in the case of the parallax barrier of the third embodiment, the extension electrodes are not arranged in the vertical direction same as the vertical direction of the subpixel, The images corresponding to the subpixels of different colors are mixed together so that the colors are mixed so as to prevent the color distortion phenomenon.

In the case of the first embodiment, the longitudinal direction of the R, G, and B subpixels and the arrangement direction of the extension electrodes of the respective electrodes are directed to different directions (preferably, vertical directions), so that the above color distortion phenomenon does not occur.

However, when the longitudinal direction of the R, G, and B subpixels and the arrangement direction of the extension electrodes of the respective electrodes are directed in the same direction, the above color distortion phenomenon occurs. Therefore, It is necessary to arrange it at an angle.

The other operation methods and the overall connection structure are the same as those of the second embodiment, and thus will not be described.

17 to 19 show a fourth embodiment of the present invention.

The electrode arrangement structure of the fourth embodiment is almost the same as that of the third embodiment.

18, the first and second other side guide electrodes 512 and 522 are disposed on the other electrode 500 rather than the one electrode 300. [

The other operation methods and the overall structure are the same as those of the third embodiment, and thus will not be described.

20 shows a fifth embodiment

In the case of the first to fourth embodiments, one electrode module including one electrode and one other electrode, and one liquid crystal unit arranged in this manner are mainly implemented. In the case of the fifth embodiment, This embodiment is implemented mainly with a plurality of liquid crystal units.

As shown in FIG. 20, when two electrode modules are arranged, one is called an upper electrode module 1000 and the other is called a lower electrode module 2000.

Here, the configuration of the upper electrode module and the configuration of each of the lower electrode modules are the same as those of the first electrode and the second electrode in the first to fourth embodiments, and thus the description of the overlapped structure of the extended electrodes is omitted.

An insulator (3000) for preventing a short circuit is disposed between the upper electrode module and the lower electrode module.

Meanwhile, two terminal portions are connected to the upper electrode module and the lower electrode module, respectively, and electrode terminals capable of independently providing a voltage or a pulse signal are connected to the respective terminal portions.

Here, a terminal portion connected to the upper electrode module is defined as an upper electrode terminal, and a terminal portion connected to the lower electrode module is defined as a lower electrode terminal.

The upper electrode terminal is composed of first to fourth upper electrode terminals (C1 to C4), and the lower electrode terminal is composed of first to fourth lower electrode terminals (C1 'to C4').

The connection relationship between the first to fourth upper one-side elongated electrodes and the first to fourth upper other elongated electrodes and the first to fourth upper electrode terminals (C1 to C4) in the upper electrode module are the same as in the first to fourth embodiments As described above.

The connection relationship between the first to fourth lower one extension electrodes and the first to fourth lower extension electrodes in the lower electrode module is the same as that described in the first to fourth embodiments.

When the upper electrode module 1000 and the lower electrode module 2000 are disposed with the insulator 3000 interposed therebetween, the upper electrode module 1000 and the lower electrode module 2000 are positioned at the same position It is not completely overlapped but partially overlapped.

For example, the first upper one side extension electrode 1313 of the upper electrode module 1000 partially overlaps the first lower one side extension electrode 2313 of the lower electrode module 2000 without overlapping completely.

In this figure, half of the area is overlapped, but the present invention is not limited to this, and any partial overlapping is possible.

On the other hand, the first upper-side extended electrode 1513 of the upper electrode module 1000 is also partially overlapped with the first lower-side extended electrode 2513 of the lower electrode module 200 without being completely overlapped.

Accordingly, the second to fourth upper extension electrodes 1323, 1333, and 1343 of the upper electrode module 1000 are connected to the second to fourth lower one extension electrodes 2323, 2333, and 2343 of the lower electrode module 200, respectively. ) And partially overlapped with each other.

The second through fourth upper extension electrodes 1523, 1533 and 1543 of the upper electrode module 1000 are also connected to the second to fourth lower extension electrodes 2523, 2533 and 2543 of the lower electrode module 2000, respectively. ) And partially overlapped with each other.

This is because the movement step of the barrier pattern is increased to a larger number of steps in step 4, and thus the movement interval of each step of the barrier pattern is smaller than that of the first to fourth embodiments, so that it is possible to control the movement of the barrier pattern more finely .

 In the first to fourth embodiments, the change of the position of the barrier pattern on the liquid crystal unit 400 by one electrode module occurs in four steps.

However, in the case of the fifth embodiment, the positional change of the barrier pattern can be performed through eight steps by the two electrode modules 1000 and 2000.

The voltage application states at the respective terminal portions for changing the barrier pattern in the eight steps are as shown in Figs. 21 and 22. Fig.

The operation of the fifth embodiment will be described with reference to FIGS. 21 and 22. FIG.

21 (a) is a front view of a barrier arrangement according to a moving state in each step, and Fig. 21 (b) shows a control signal.

In the driving signal, 'L' is a high potential voltage or pulse, 'H' is a low potential voltage or pulse, and an extension electrode to which a signal according to 'H' is applied and an extension electrode to which a signal according to 'L' A barrier pattern is formed on the liquid portion.

22 is a plan sectional view of the barrier arrangement according to the moving state in each step.

In the course of each step, when a voltage signal or a pulse signal is selectively applied to the first electrode module 1000, the second electrode module 2000 should be completely turned off, and the opposite relationship is established desirable.

In the first step, the second electrode module 2000 is maintained in an off state, and between the first upper one side extension electrode 1313 and the second upper side extension electrode 1523 in the first electrode module 1000, A potential difference is formed only between the upper one side extension electrode 1323 and the third upper side extension electrode 1533 to form a barrier pattern and no barrier pattern is formed at other portions.

In the second step, the first electrode module 1000 is maintained in the off state, and between the first lower one extension electrode 2313 and the second lower extension electrode 2523 in the second electrode module 2000, A potential difference is formed only between the lower one extension electrode 2323 and the third lower extension electrode 2533 to form a barrier pattern, and no barrier pattern is formed at other portions.

In the third step, the second electrode module 2000 is maintained in an off state, and between the second upper one side extension electrode 1323 and the third upper side extension electrode 1533 in the first electrode module 1000, A potential difference is formed only between the upper one side extension electrode 1333 and the fourth upper side extension electrode 1543 to form a barrier pattern and no barrier pattern is formed at other portions.

In the fourth step, the first electrode module 1000 is maintained in an off state, and between the second lower one side extending electrode 2323 and the third lower lower side extending electrode 2533 in the second electrode module 2000, A potential difference is formed only between the lower one extension electrode 2333 and the fourth lower extension electrode 2543 to form a barrier pattern and no barrier pattern is formed at other portions.

In the fifth step, the second electrode module 2000 is maintained in the off state, and between the third upper extension electrode 1333 and the fourth upper extension electrode 1543 in the first electrode module 1000, A potential difference is formed only between the fourth upper extension electrode 1343 and the first upper extension electrode 1513 to form a barrier pattern, and no barrier pattern is formed at other portions.

In the sixth step, the first electrode module 1000 is maintained in an off state, and between the third lower one side extending electrode 2333 and the fourth lower lower side extending electrode 2543 in the second electrode module 2000, A potential difference is formed only between the lower one extension electrode 2343 and the first lower extension electrode 2513 to form a barrier pattern and no barrier pattern is formed at other portions.

In the seventh step, the second electrode module 2000 is maintained in an off state, and between the fourth upper extension electrode 1343 and the first upper extension electrode 1513 in the first electrode module 1000, A potential difference is formed only between the first upper extension electrode 1313 and the second upper extension electrode 1523 to form a barrier pattern, and no barrier pattern is formed at other portions.

In the eighth step, the first electrode module 1000 is maintained in the off state, and between the fourth lower one extension electrode 2343 and the first lower extension electrode 2513 in the second electrode module 2000, A potential difference is formed only between the lower one extension electrode 2313 and the second lower extension electrode 2523 to form a barrier pattern and no barrier pattern is formed at other portions.

In this case, if the double laminated structure of the electrode module is formed as shown in FIGS. 20 to 22, the positional change of the barrier pattern in eight steps can be realized. In the triple laminated structure of the electrode module, It can happen by going through 16 steps.

Based on this information, the number of steps of changing the position of the barrier pattern according to the multiple lamination structure of the electrodes is increased by 4n (n is the number of electrode modules).

23 to 25 show a sixth embodiment.

Two electrode modules used in the first to fourth embodiments are used and they are laminated in mutually orthogonal directions without stacking them in the same direction.

C2 ', S1', S2 ') for applying voltage to the other electrode module (C1', C2 ', S1', S2 ' ).

A barrier pattern may be formed on the parallax barrier in the landscape direction by the electrode module connected to the electrode terminals denoted by C1, C2, C3, and C4, and a barrier pattern may be formed on the parallax barrier in the direction of Landscape, A barrier pattern may be formed in the portrait direction by the electrode module connected to the electrode terminal.

However, the electrode module connected to C1, C2, C3 and C4 inversely forms a barrier pattern in the portrait direction and the electrode module connected with C1 ', C2', C3 'and C42' Landscape) direction.

As shown in FIG. 24 (a), since the electrode module has a double layered structure, an insulator 4000 is provided to prevent a short between the upper electrode module and the lower electrode module.

As shown in FIG. 24 (b), when a signal is applied to the electrode terminals indicated by C1, C2, C3, and C4 and a potential difference according to each step of the first to fourth embodiments is formed, When a signal is applied to the electrode terminal portions denoted by C1 ', C2', C3 ', and C4', the barrier pattern is formed in the left and right direction.

Hereinafter, C1, C2, C3, and C4 are electrode terminals for forming a barrier pattern that operates in the landscape mode, and C1 ', C2', C3 ', and C4' Will be described as an example.

As shown in Fig. 25 (a), when signals are applied to C1, C2, C3, and C4 according to display of the control signal table, and C1 ', C2', C3 ', and C4' And are arranged in the vertical direction.

25 (a), the barrier pattern can be moved leftward or rightward according to a change in the signal application state of each step.

On the other hand, as shown in Fig. 25 (b), when signals are applied to C1 ', C2', C3 ', and C4' in accordance with the display of the control signal table and C1, C2, C3, Are arranged in the left-right direction.

Then, the barrier pattern can be moved upward or downward according to the change of the voltage application state in each step shown in FIG. 25 (b).

Those skilled in the art will appreciate that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof.

Therefore, it is to be understood that the above-described embodiments are illustrative in all aspects and not restrictive.

The scope of the present invention is defined by the appended claims rather than the detailed description and all changes or modifications derived from the meaning and scope of the claims and their equivalents are to be construed as being included within the scope of the present invention do.

100: display panel 300: one side electrode
310: first side electrode 311: first side connecting electrode
312: first side guide electrode 313: first side extended electrode
320: second one side electrode 321: second one side connection electrode
322: second one side guiding electrode 323: second one side extending electrode
330: third side electrode 331: third side connecting electrode
332: third one side guide electrode 333: third one side extended electrode
340: fourth side electrode 341: fourth side connection electrode
342: fourth one side guide electrode 343: second one side extending electrode
513: first other-side extension electrode 514: first other-side contact electrode
523: second other-side extension electrode 524: second other-side contact electrode
533: third other extended electrode 534: third other-side contact electrode
543: first other-side extended electrode 544: fourth other-side contact electrode
1000: first electrode module 2000: second electrode module

Claims (26)

A first electrode having at least one extension electrode spaced from the first electrode;
An other electrode having at least one other extended electrode spaced apart from each other;
A liquid portion provided between the one side electrode and the other side electrode to form a barrier pattern in accordance with an electric field or a potential difference selectively formed therebetween;
And a terminal portion for applying a voltage or a pulse independently to the one electrode and the other electrode,
Each of the one extension electrode and each of the other extension electrodes overlaps one by one, and each one or the other extension electrode is connected to the other extension electrode or the one extension electrode of the one extension electrode, So that the same voltage or pulse can be applied,
The voltage or pulse applied to the one electrode and the other electrode Wherein the barrier pattern arrangement state formed on the liquid crystal unit is changed according to an applied state. The method according to claim 1,
Wherein the one electrode has a plurality of terminal portions to which signals independent from each other are applied;
A plurality of one-side connection electrodes connected to the respective terminal portions;
And one side guide electrode connected to each of the one side connection electrodes to guide a signal,
The one extension electrode is provided in plural and spaced apart from each other,
Some of the one extension electrodes are provided to be directly connected to a part of the plurality of one guide electrodes,
And another part of the one extension electrodes is connected to another part of the plurality of one side guide electrodes by the guide electrodes of the other side electrode. 3. The method of claim 2,
The one side guide electrode includes first to fourth side guide electrodes,
Wherein the one extension electrode comprises first to fourth extension electrodes,
The third and fourth extension electrodes are connected to the third and fourth one-side guide electrodes,
Wherein the first and second extension electrodes are spaced apart from the first and second guide electrodes. The method of claim 3,
Wherein the other extension electrode includes first to fourth other extension electrodes,
The first other-side extended electrode is disposed so as to be able to communicate with the first one-side extension electrode and the first guide electrode, and overlaps with the other extended electrode adjacent to the first one-side extended electrode ,
And the second other-side extended electrode is disposed so as to be able to communicate with the second one-side extension electrode and the second guide electrode, and is disposed to overlap with the other extended electrode adjacent to the second one- And the three-dimensional image display device. The method of claim 3,
Wherein the other extension electrode includes first to fourth other extension electrodes,
The third other-side extended electrode is arranged to be able to communicate with the third one-side extended electrode, and is disposed so as to overlap the other extended electrode adjacent to the third one-side extended electrode,
Wherein the fourth other-side extended electrode is disposed so as to be conductive with the fourth one-side extended electrode and overlaps with the other extended electrode adjacent to the fourth one-side extended electrode. The method according to claim 4 or 5,
First to fourth one-side contact electrodes provided at respective ends of the first to fourth one-side extended electrodes and wider than other portions,
Further comprising first to fourth other-side contact electrodes which are provided at respective ends of the first to fourth other-side extending electrodes and which are in electrical contact with the first to fourth one-side contact portions, Device. The method according to claim 6,
Each of the one-side contact electrodes is arranged to extend in a direction orthogonal to the extending direction of the one extending electrodes,
And each of the other contact electrodes extends in a direction orthogonal to an extension direction of the other extension electrode. The method according to claim 4 or 5,
When a signal for the first stage barrier arrangement is applied,
A potential difference is formed between the first extension electrode and the second extension electrode and between the second extension electrode and the third extension electrode to form a barrier pattern,
Wherein a barrier pattern is not formed between the third elongated electrode and the fourth elongated extension electrode and between the fourth elongated electrode and the first elongated extension electrode so that a barrier pattern is not formed. Device. The method according to claim 4 or 5,
When a signal for the second stage barrier arrangement is applied,
A potential difference is formed between the second one extension electrode and the third other extension electrode and between the third extension electrode and the fourth other extension electrode to form a barrier pattern,
Wherein a barrier pattern is not formed between the first extended electrode and the second extended electrode and between the fourth extended electrode and the first extended electrode so that a barrier pattern is not formed. Device. The method according to claim 4 or 5,
When a signal for the third stage barrier arrangement is applied,
A potential difference is formed between the third extension electrode and the fourth extension electrode and between the fourth extension electrode and the first other extension electrode to form a barrier pattern,
Wherein a barrier pattern is not formed so that a potential difference is not formed between the first extension electrode and the second extension electrode, and between the second extension electrode and the third extension electrode. Device. The method according to claim 4 or 5,
When a signal for the fourth-stage barrier arrangement is applied,
A potential difference is formed between the first extension electrode and the second extension electrode and between the fourth extension electrode and the first extension electrode to form a barrier pattern,
And a barrier pattern is not formed between the second one extension electrode and the third other extension electrode and between the third extension electrode and the fourth other extension electrode so that a barrier pattern is not formed. Device. The method according to claim 4 or 5,
First to fourth extension electrodes;
And the first to fourth other extension electrodes are arranged to be inclined at a predetermined angle. 13. The method of claim 12,
Wherein the predetermined angle is an angle at which light of all kinds of subpixels can be seen through a section that does not form a barrier pattern and functions as a slit. An upper electrode module including an upper one electrode having at least one upper one extension electrode spaced apart and at least one upper upper electrode having at least one upper one extension electrode spaced from each other;
A lower electrode module including a lower one side electrode having at least one lower one side extension electrode spaced apart and at least one lower side side electrode having at least one lower side extension electrode spaced from each other;
A liquid portion provided between each of the one side electrodes and each of the other side electrodes so as to form a barrier pattern in accordance with an electric field or a potential difference selectively formed therebetween;
An insulator disposed between the upper electrode module and the lower electrode module to prevent current flow between the upper electrode module and the lower electrode module;
And a terminal unit for independently applying a voltage or a pulse to the one side electrode and the other side electrode,
Each of the upper or lower extension electrodes and each of the upper or lower extension electrodes are overlapped one by one, and each of the one or the other extension electrodes is connected to the other one or the other extension And is arranged so as to be able to be energized with an electrode so that the same voltage or pulse can be applied,
Wherein the barrier pattern arrangement state formed in the liquid crystal unit is changed according to a state of application of a voltage or a pulse applied to the one electrode and the other electrode. 15. The method of claim 14,
And the upper one side extension electrodes are disposed so as to be entirely overlapped with the upper side other extension electrodes,
Wherein the upper one extension electrodes and the upper other extension electrodes partially overlap the lower one extension electrodes and the lower extension electrodes, respectively. 15. The method of claim 14,
A barrier pattern having a different arrangement or positional state is formed in the liquid level in accordance with a potential difference according to a state of application of a voltage applied to the terminal unit connected to each extension electrode,
Wherein the number of the arranging steps of the barrier pattern is 4n (4n) times the number (n) of electrode modules. 15. The method of claim 14,
Wherein the upper one extension electrode and the lower one extension electrode are disposed sequentially and include first to fourth upper or lower extension electrodes repeatedly arranged,
Wherein the upper-side second elongated electrode and the lower-second elongated electrode are sequentially disposed and the first through fourth upper or lower second elongated electrodes are repeated in the order of arrangement. 18. The method of claim 17,
The specific upper one side extension electrode is disposed so as to be able to communicate with another upper upper side extension electrode adjacent to the upper side other extended electrode,
Wherein the specific lower one side extended electrode is disposed so as to be conductive with another lower side extended electrode adjacent to the lower one side extended electrode arranged to overlap with the other lower side extended electrode. An upper electrode module including an upper one electrode having at least one upper one extension electrode spaced apart and at least one upper upper electrode having at least one upper one extension electrode spaced from each other;
A lower one side electrode having at least one lower one side extension electrode spaced apart from each other and at least one lower side side extension electrode spaced apart from each other and arranged in a direction orthogonal to the arrangement direction of the upper electrode module A lower electrode module;
A liquid portion provided between each of the one side electrodes and each of the other side electrodes so as to form a barrier pattern in accordance with an electric field or a potential difference selectively formed therebetween;
An insulator disposed between the upper electrode module and the lower electrode module to prevent current flow between the upper electrode module and the lower electrode module;
And a terminal unit for independently applying a voltage or a pulse to the one side electrode and the other side electrode,
Each of the upper or lower extension electrodes and each of the upper or lower extension electrodes are overlapped one by one, and each of the one or the other extension electrodes is connected to the other one or the other extension And is arranged so as to be able to be energized with an electrode so that the same voltage or pulse can be applied,
The voltage or pulse applied to the one electrode and the other electrode Wherein the barrier pattern arrangement state formed on the liquid crystal unit is changed according to an applied state. 20. The method of claim 19,
The arrangement direction of a barrier pattern formed when a voltage or a pulse is applied to the upper electrode module and the arrangement direction of a barrier pattern formed when a voltage or a pulse is applied to the lower electrode module are orthogonal to each other Dimensional image display device. Recognizing a change in a position of a user's eye or a position of a head;
And a plurality of steps of changing the arrangement state of the parallax barrier in accordance with the change,
Wherein changing the arrangement of the barrier comprises:
One of the extension electrodes provided on the one side electrode disposed in the parallax barrier and the other electrode overlapping the one extension electrode are connected to a voltage or pulse signal And controlling the barrier pattern arrangement state to be changed according to the state,
Each of the one extension electrode and each of the other extension electrodes overlaps one by one, and each one or the other extension electrode is connected to the other extension electrode or the one extension electrode of the one extension electrode, So that the same voltage or pulse can be applied to the three-dimensional image display device. 22. The method of claim 21,
Wherein the one extension electrode comprises first to fourth extension electrodes,
The other elongated electrode includes first to fourth elongated extension electrodes, one extension electrode of a specific order and an elongated second elongated electrode adjacent to the specific extension number are overlapped with each other, The other extension electrode of the sequential number is arranged to be energizable,
Wherein the step of changing the barrier pattern arrangement state comprises selectively forming a potential difference between one extension electrode and the other extension electrode overlapping each other or eliminating a potential difference. 23. The method of claim 22,
The step of changing the barrier pattern arrangement state includes:
A potential difference is formed between the first extension electrode and the second extension electrode and between the second extension electrode and the third extension electrode to form a barrier pattern,
And controlling a barrier pattern not to be formed between the third one extension electrode and the fourth other extension electrode and between the fourth extension electrode and the first other extension electrode so that a potential difference is not formed. Wherein the stereoscopic image display device is a stereoscopic image display device. 23. The method of claim 22,
The step of changing the barrier pattern arrangement state includes:
A potential difference is formed between the second one extension electrode and the third other extension electrode and between the third extension electrode and the fourth other extension electrode to form a barrier pattern,
And controlling a barrier pattern not to be formed between the first extended electrode and the second extended electrode and between the fourth extended electrode and the first extended electrode so that no potential difference is formed. Wherein the stereoscopic image display device is a stereoscopic image display device. 23. The method of claim 22,
The step of changing the barrier pattern arrangement state includes:
A potential difference is formed between the third extension electrode and the fourth extension electrode and between the fourth extension electrode and the first other extension electrode to form a barrier pattern,
And controlling a barrier pattern not to be formed between the first extended electrode and the second extended electrode and between the second extended electrode and the third extended electrode so that no potential difference is formed. Wherein the stereoscopic image display device is a stereoscopic image display device. 23. The method of claim 22,
The step of changing the barrier pattern arrangement state includes:
A potential difference is formed between the first extension electrode and the second extension electrode and between the fourth extension electrode and the first extension electrode to form a barrier pattern,
And controlling a barrier pattern not to be formed between the second one extension electrode and the third other extension electrode and between the third extension electrode and the fourth other extension electrode so that a potential difference is not formed. Wherein the stereoscopic image display device is a stereoscopic image display device.

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