JPH1048673A - Electrophoretic recording medium and electrophoretic display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electrophoretic recording medium which is capable of forming images having high resolution at a high speed and is simple in constitution and low in cost and allows the comparison of plural static images and an electrophoretic display device. SOLUTION: The formation of the plural static images to be compared is made possible by the simple and inexpensive constitution consisting of one driving device 2A and the plural recording media IA by making the recording media 1A separable from the driving device 2A. A non-display side substrate 12 having electrical conductivity anisotropy in a thickness direction and surface electrodes 13 come into contact with a dispersion system 16 and, therefore, the formation of the images having the high resolution is made possible by the min. impressed voltage. The combinations of the electrodes for impressing the electric fields on the dispersion system 16 are specified to the combinations of the surface electrodes and the electrode groups in the matrix form or the combinations of the plural wire-shaped electrodes in a longitudinal direction or transverse direction and the plural wireshaped electrodes in the transverse direction or the longitudinal direction, by which the two-dimensional driving in the matrix form is made possible and the writing of the images at a high speed on the recording media 1A is made possible.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrophoretic recording medium and an electrophoretic display device utilizing an electrophoretic phenomenon.
In particular, the present invention relates to an electrophoretic recording medium and an electrophoretic display device in which the electrophoretic recording medium and the driving device are configured to be separable from each other.

[0002]

2. Description of the Related Art The "electrophoresis phenomenon" generally utilizes an electric double layer generated at an interface between a solid (electrophoretic particles) and a liquid (dispersion medium). The combination and the action of a surfactant added to the dispersion medium to control the charge generated at the interface form a charge on the surface of the particle, and the force received by the electric field on the surface is driven by the electric field. Is a phenomenon that migrates in a desired direction at a desired speed.

A display system utilizing such an electrophoresis phenomenon has a simple structure, a wide selection range of display colors, high contrast, a wide viewing angle, low voltage driving, low power consumption, and image memory performance. Are simultaneously provided, so that it has the feature that various functions that are difficult to achieve with a CRT display or LCD can be obtained. For example, a frequently changing image can be clearly displayed, and a still image can be continuously displayed without supplying any energy due to the memory property of the image.

A conventional electrophoretic display device is of a type in which an image signal is directly applied to a dispersion system from a pair of electrodes that are in contact with the dispersion system by a drive system (a direct application system) (for example, Japanese Patent Application Laid-Open No. H6-148893). Etc.) and dispersing system between the insulating plate and the electrode, and irradiating the ion flow on the outer surface of the insulating plate with the ion current irradiating means to indirectly transmit the image signal from outside the insulating plate to the dispersing system Application method (indirect application method)
(For example, JP-A-61-86780, JP-A-6-202168, etc.).

A conventional electrophoretic display device employing the above-described direct application method can generate a high-resolution image with a minimum applied voltage because the electrodes are in contact with the dispersion system. It is suitable for high-speed writing because of easy driving.

In the conventional electrophoretic display device employing the above-described indirect application method, the electrophoretic recording medium having the dispersion system is separated from the ion stream irradiation means. Therefore, the electrophoretic recording medium is simple and inexpensive. Therefore, when it is desired to view a plurality of screens simultaneously, it is possible to easily and inexpensively generate a plurality of screens one after another by exchanging only the electrophoretic recording medium while using the same ion stream irradiation means. There is a feature that can be.

[0007]

However, according to the conventional electrophoretic display device employing the above-described direct application method, a matrix-like electrode group and an electrophoretic recording material are integrated, so that a general display is used. For example, there is not much difference from a twisted nematic liquid crystal display.For example, when it is desired to view a plurality of screens at the same time, a plurality of screens are partially displayed within a range of the number of displayable pixels, or a plurality of display devices. There was inconvenience such as having to provide. This is a way of utilizing the memory property, in which only the changed part of the image is rewritten to suppress flickering on the screen and to reduce the power consumption. During this period, the driving device, which is a relatively expensive part, must be stopped.

Further, according to the conventional electrophoretic display device employing the above-mentioned indirect application method, the ion source and the ion current control blade constituting the ion current irradiating means are arranged in a matrix two-dimensional arrangement required for high-speed writing. Is difficult, and it is not easy to instantly reverse the polarity of the irradiated ions, which is not suitable for high-speed driving. Further, since a signal is applied to the driving of the dispersion system via the insulating plate, there is a problem that the resolution is liable to be deteriorated.

Accordingly, an object of the present invention is to provide an electrophoretic recording medium and an electrophoretic display device which can form a high-resolution image at a high speed, and have a simple configuration and can compare a plurality of still images at low cost. Is to do.

[0010]

In order to achieve the above object, the present invention provides a conductive anisotropic electrode having conductivity in the thickness direction and not having conductivity in the vertical and horizontal directions. A counter electrode that forms a predetermined space between the conductive anisotropic electrode and the conductive anisotropic electrode at a predetermined interval; A dispersion system in which electrophoretic particles are dispersed, an image is displayed by an electric field according to the conductive anisotropy and an image signal applied between the counter electrodes, and the image is displayed even after the electric field is erased. There is provided an electrophoretic recording medium characterized in that it is configured to hold. According to the above configuration, when an electric field corresponding to the image signal is applied between the conductive anisotropic electrode and the counter electrode, the electrophoretic particles are dispersed by the polarity of the charge of the electrophoretic particles and the polarity of the applied electric field. The medium migrates and collects on the conductive anisotropic electrode or the counter electrode. By using a color different from that of the dispersion medium for the electrophoretic particles, an image is visually displayed. By using a conductive anisotropic electrode having the function of a full-surface electrode or a substrate as the opposing electrode of the recording body, the configuration of the recording body becomes simple and low in cost, and it is simpler in generating a plurality of still images. It will be cheaper. Since the conductive anisotropy and the counter electrode are in contact with the dispersion system, an image with high resolution can be generated with a minimum applied voltage.

[0011] In order to achieve the above object, the present invention provides a conductive anisotropic electrode having conductivity in the thickness direction and not having conductivity in the vertical width direction and the horizontal width direction; A counter electrode having a predetermined space formed between the conductive anisotropic electrode and the counter electrode with a predetermined space therebetween, and a plurality of electrophoretic particles dispersed in a dispersion medium sealed in the space. A dispersion system, and displays an image by an electric field according to the conductive anisotropy and an image signal applied between the counter electrodes, and is configured to hold the image even after the electric field is erased. An electrophoretic recording medium, a drive electrode that is detachably integrated with the electrophoretic recording medium, and that contacts the conductive anisotropic electrode when the electrophoretic recording medium is mounted; The image between the anisotropic electrode and the counter electrode It is provided with a drive unit that includes a means for applying the electric field to provide an electrophoretic display device comprising in accordance with the Patent. According to the above configuration, when the electrophoretic recording body is mounted on the driving device such that the conductive anisotropic electrode of the electrophoretic recording body contacts the driving electrode of the driving device, the conductive anisotropic electrode and the driving electrode Becomes conductive.
In this state, when the application means applies an electric field according to an image signal between the conductive anisotropic electrode and the counter electrode via the driving electrode, the polarity of the charge of the electrophoretic particles and the polarity of the applied electric field As a result, the electrophoretic particles migrate through the dispersion medium and gather at the conductive anisotropic electrode or the counter electrode. In addition, since the image can be continuously displayed even after the electric field applied to the dispersion system is erased, when comparing a plurality of still images, only the electrophoretic recording medium is replaced by using the same driving device to replace the plurality of images. Are generated one after another. By making the electrophoretic recording medium separable from the driving device, the comparison object can be compared with a simple and low-cost configuration consisting of one driving device and multiple recording materials without using multiple display devices including the recording material. Can be generated. A combination of electrodes for applying an electric field to the dispersion system is a combination of a planar electrode and a matrix-like electrode group, or a combination of a plurality of vertical or horizontal linear electrodes and a plurality of horizontal or vertical linear electrodes. With the combination, matrix-like two-dimensional driving can be performed, and an image can be written on a recording medium at high speed. As described above, the present invention solves the drawbacks of each of the conventional direct application methods while achieving the characteristics of the high resolution and high speed of the conventional direct application method, and the simplicity and listability of the recording medium of the conventional indirect application method. It is a thing.

[0012]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a sectional view showing the configuration of the electrophoretic recording medium according to the first embodiment of the present invention.

The electrophoretic recording medium (hereinafter abbreviated as “recording medium”) 1A includes a display-side substrate 11 held via a spacer 10 and a non-display-side substrate 1 as a conductive anisotropic electrode.
2, a dispersion electrode comprising a planar electrode 13 formed on an inner surface 11a of the display-side substrate 11 as a counter electrode, a dispersion medium 14 and a plurality of electrophoretic particles 15 sealed between the substrates 11, 12. 16 and a connector 17 connected to the planar electrode 13.

The spacer 10 is made of, for example, a polyester film or the like, and is disposed at the ends of the substrates 11 and 12 and in the dispersion system 16 as appropriate.

The display-side substrate 11 is made of, for example, transparent glass, plastic, or the like.

FIG. 2 is a front view of a main part of the non-display side substrate 12. The non-display side substrate 12 has a plurality of conductive particles 12b dispersed in a film 12a as shown in FIG. The portion in which the conductive particles 12b are present has conductivity in the thickness direction of the substrate 12 due to the conduction effect, and has conductivity anisotropy having no conductivity in the vertical width direction and the horizontal width direction. Further, since the non-display side substrate 12 is on the non-display side, various resins can be used for the film 12a, and nickel particles, carbon particles,
Various kinds of particles such as glass and plastic whose surfaces are subjected to a conductive treatment can be used.

The planar electrode 13 is made of iridium tin oxide (I
(TO) or the like.

The dispersion medium 14 is a mixture of a blue dye and an ionic surfactant in an insulating organic solvent such as isoparaffinic hydrocarbon, hexylbenzene, tetrafluorodibromoethane, perfluoropolyether and toluene fluoride. Is used.

The electrophoretic particles 15 are obtained by dispersing a white pigment (for example, TiO ₂ ) in a transparent wax, and have a diameter of several μm, for example.

FIG. 3 is a sectional view showing the structure of the electrophoretic display device according to the first embodiment of the present invention to which the recording medium 1A shown in FIG. 1 is applied. This electrophoretic display device (hereinafter abbreviated as “display device”) 100A drives the recording body 1A shown in FIG. 1 which is configured to be separable from each other, and drives the recording body 1A to perform display based on the electrophoresis phenomenon. Device 2A
It is composed of

The driving device 2A is formed on the non-display-side substrate 20 and the surface 20a of the non-display-side substrate 20, and serves as a matrix as a drive electrode that comes into contact with the non-display-side substrate 12 of the recording body 1A when the recording body 1A is mounted. Electrode group 21, a connector 22 connected to the connector 17 of the recording body 1A grounded, and a power supply circuit 23 for applying a DC voltage between the electrode group 21 and the planar electrode 13 of the recording body 1A. Is provided.

The electrode group 21 is formed in a matrix through an insulating region 21a, and is driven by a thin film transistor.

The power supply circuit 23 applies a DC voltage (electric field) to the electrode group 21 via the lead 23a in accordance with the input image signal S.

Next, the operation of the display device 100A will be described with reference to FIGS. 4 and 5 are cross-sectional views showing a display state of the recording body 1A by the display device 100A. It is assumed that the electrophoretic particles 15 are negatively charged and are suspended in the dispersion medium 14 as shown in FIG.

The operator mounts the recording body 1A shown in FIG. 1 on the driving device 2A as shown in FIG. That is, the non-display side substrate 12 of the recording body 1A is connected to the electrode group 2 of the driving device 2A.
1 and the connector 17 of the recording body 1A and the driving device 2
Is connected to the connector 22. By bringing the non-display-side substrate 12 into contact with the electrode group 21, the non-display-side substrate 12 and the electrode group 21 are brought into a conductive state by the conductive anisotropy of the non-display-side substrate 12.

In this state, when an image signal S is input from outside, the power supply circuit 23 applies a positive or negative DC voltage (electric field) to the electrode group 21 via the lead 23a in accordance with the image signal S. Is applied. Then, as shown in FIG. 4, the electrode group 21 to which the negative DC voltage is applied and the planar electrode 1
The electrophoretic particles 15 located between the planar electrode 13 and the electrophoretic particles 15 migrate through the dispersion medium 14 and collect on the planar electrode 13. The migrating particles 15 migrate to the electrode group 21 by migrating the dispersion medium 14.

From the outside of the display-side substrate 11, the planar electrode 1
In the region (pixel) where the electrophoretic particles 15 are gathered on the third side, the color of the electrophoretic particles 15 (white in this embodiment) is visible, and the region (pixel) where the electrophoretic particles 15 are not gathered
Thus, the color of the dispersion medium 14 (blue in this embodiment) can be seen. As a result, an image composed of two colors of white and blue is visually displayed on the display-side substrate 11 side. In addition, even if the connectors 17 and 22 are removed due to the memory characteristics of the image, as shown in FIG. 5, the still image can be continuously displayed on the display side substrate 11 without power supply for a long time. In the case of comparison, a plurality of still images are generated one after another by exchanging only the recording medium 1A using the same driving device 2A.

According to the display device 100A having the above structure, when writing image information to the recording body 1A, the recording body 1A is brought into contact with the non-display side substrate 20 of the driving device 2A on which the electrode group 21 is formed, and the connector 17 , 22 is connected, a pattern-like electric field corresponding to the image signal is recorded on the recording medium 1.
A. Further, since the image can be continuously displayed even after the electric field applied to the dispersion system 16 is erased, the recording body 1A can be separated from the driving device 2A, so that a plurality of display devices including the recording body are not used. Also,
A plurality of still images to be compared can be generated with a simple and low-cost configuration including one driving device 2A and a plurality of recording bodies 1A. Further, since the recording body 1A is not provided with a matrix-like electrode group or a plurality of vertical or horizontal linear electrodes, the configuration of the recording body 1A is simple and inexpensive, and it is difficult to generate a plurality of still images. It will be simpler and cheaper. The non-display side substrate 12 and the planar electrode 1
3 is in contact with the dispersion system 16, the recording voltage is directly transmitted to the interface with the dispersion medium 14 while maintaining the resolution of the electrode group 21 by the conductive particles 12 b in contact with the electrode group 21. An image with high resolution can be generated with a voltage. Further, since the combination of electrodes for applying an electric field to the dispersion system 16 is a combination of the planar electrode 13 and the matrix electrode group 21, two-dimensional driving in a matrix can be performed, and the recording medium 1A can be driven at high speed. Images can be written.

FIG. 6 is a sectional view showing the structure of an electrophoretic recording medium according to the second embodiment of the present invention. Note that those having the same functions as those of the recording body 1A shown in FIG. 1 are denoted by the same reference numerals, and description thereof will be omitted. The recording body 1B includes a display-side substrate 18 as a counter electrode held via a spacer 10 and a non-display-side substrate 1 as a conductive anisotropic electrode.
2 and a dispersion medium 16 composed of a plurality of electrophoretic particles 15 and a dispersion medium 14 sealed between the substrates 18 and 12.

The display-side substrate 18 is, like the non-display-side substrate 12, a film 18a in which a plurality of conductive particles 18b are dispersed. The portion where the conductive particles 18b exist is:
It has conductive anisotropy in which electrical conduction is provided in the thickness direction of the substrate 18 by the conduction effect. Further, since the display side substrate 18 is on the display side, a transparent resin is used for the film 18a, and a transparent conductive material such as indium oxide is applied to the surface of the transparent particles such as glass or plastic for the conductive particles 18b. What formed the film is used. In this case, it is preferable that the refractive indices of the transparent film 18a and the transparent conductive particles 18b are substantially equal to each other to prevent distortion of an image.

FIG. 7 is a sectional view showing the configuration of an electrophoretic display device according to a second embodiment of the present invention to which the recording medium 1B shown in FIG. 6 is applied. Components having the same functions as those of the display device 100A shown in FIG. 3 are denoted by the same reference numerals, and description thereof is omitted. The display device 100B includes a recording body 1B and a recording body 1 shown in FIG.
And a driving device 2B for driving B to perform display based on the electrophoresis phenomenon.

The driving device 2B is formed on a pair of display-side substrates 24 and non-display-side substrates 20, and on opposing surfaces 24a and 20a of the pair of display-side substrates 24 and non-display-side substrates 20, respectively. A plurality of vertical linear electrodes 25 and a plurality of horizontal linear electrodes 26 as drive electrodes that contact the display-side substrate 18 and the non-display-side substrate 12 of the recording body 1B at the time of mounting, and an image is formed between the electrodes 25 and 26. And a power supply circuit 27 for applying a DC voltage in accordance with a signal.

The plurality of vertical linear electrodes 25 on the display side are formed through an insulating region (not shown), are formed of a light-transmitting conductive thin film such as iridium tin oxide (ITO), and are driven by thin film transistors. It is supposed to be.

The plurality of horizontal linear electrodes 26 on the non-display side are
It is formed via an insulating region 26a and is driven by a thin film transistor.

The power supply circuit 27 applies a DC voltage (electric field) to the electrodes 25 and 26 via the leads 27a and 27b in accordance with the input image signal S.

Next, the operation of the display device 100B will be described with reference to FIGS. 8 and 9 are cross-sectional views showing a display state of the recording body 1B by the display device 100B. It is assumed that the electrophoretic particles 15 are negatively charged and are suspended in the dispersion medium 14 as shown in FIG.

The operator mounts the recording body 1B shown in FIG. 6 on the driving device 2B as shown in FIG. That is, the display-side substrate 18 and the non-display-side substrate 12 of the recording body 1B are brought into contact with the plurality of vertical linear electrodes 25 and the plurality of horizontal linear electrodes 26 of the driving device 2B, respectively. This allows
The display-side substrate 18 and the plurality of vertical linear electrodes 25, and the non-display-side substrate 12 and the plurality of horizontal linear electrodes 26 are electrically connected by the conductive anisotropy of the display-side substrate 18 and the non-display-side substrate 12. Becomes

In this state, when an image signal S is input from the outside, the power supply circuit 27 connects the lead 27 to the vertical linear electrode 25 and the horizontal linear electrode 26 in accordance with the image signal S.
A positive or negative DC voltage (electric field) is applied through the terminals a and 27b. Then, as shown in FIG. 8, the electrophoretic particles 1 located between the electrodes 25, 26 to which the positive linear voltage is applied to the vertical linear electrodes 25 and the negative DC voltage is applied to the horizontal linear electrodes 26.
5 migrates the dispersion medium 14 and gathers at the positive vertical linear electrode 25, and the negative linear and horizontal linear electrode 26
The electrophoretic particles 15 located between the electrodes 25 and 26 to which a positive DC voltage is applied migrate to the dispersion medium 14 and collect on the positive horizontal linear electrodes 26.

From the outside of the display side substrate 18, a region (pixel) where the electrophoretic particles 15 are gathered on the vertical linear electrodes 25.
The color of the electrophoretic particles 15 (white in this embodiment)
And the color of the dispersion medium 14 (blue in this embodiment) is visible in the area (pixel) where the electrophoretic particles 15 are not collected. As a result, an image composed of two colors of white and blue is displayed on the display-side substrate 18 side. Even if the connectors 17 and 22 are removed due to the memory properties of the image, as shown in FIG.
Since a still image can be continuously displayed on the display-side substrate 18 for a long time without power supply, when comparing a plurality of still images, only the recording body 1B is exchanged by using the same driving device 2B and a plurality of still images are exchanged. Still images are generated one after another.

According to the display device 100B according to the second embodiment having the above configuration, the same effects as those of the display device 100A according to the first embodiment can be obtained. That is, a pattern-like electric field corresponding to the image signal can be applied to the recording body 1B, and a simple and inexpensive configuration including one driving device 2B and a plurality of recording bodies 1B makes it possible to compare a plurality of stationary objects to be compared. Images can be generated. Further, since the recording body 1B is not provided with a matrix-like electrode group or a plurality of vertical or horizontal linear electrodes, the configuration of the recording body 1B is simple and inexpensive, and it is difficult to generate a plurality of still images. It will be simpler and cheaper. Further, since the non-display side substrate 12 and the display side substrate 18 are in contact with the dispersion system 16, an image with high resolution can be generated with the minimum applied voltage. Further, since the combination of the electrodes for applying an electric field to the dispersion system 16 is a combination of the plurality of vertical linear electrodes 25 and the plurality of horizontal linear electrodes 26, two-dimensional matrix driving can be performed. It becomes possible to write an image on the recording medium 1B at high speed. The non-display side substrate 12 and the display side substrate 18
Is composed of a member having both the substrate and electrode functions and having conductive anisotropy, so that the configuration can be further simplified.

FIG. 10 is a perspective view showing the appearance of an electrophoretic display device according to a third embodiment of the present invention. The display device 100C includes a display device 10 according to the second embodiment.
The power supply circuit 27 is provided inside one of the substrates (the substrate 24 in this case).

The present invention is not limited to the above-described embodiment, and various embodiments are possible. For example, in the first embodiment, the non-display side substrate 1 of the recording body 1A is used.
2. The non-display side substrate 20 side of the driving device 2A may be transparent, and these may be the display side. In this case, the display side substrate 11
The planar electrode 13 need not be transparent, but by making it transparent, an image can be displayed on both the front and back sides. In the first embodiment, the planar electrode 1
3 may be a plurality of vertical or horizontal linear electrodes, the electrode group 21 may be a plurality of horizontal or vertical linear electrodes, and the planar electrode 13 may be a matrix electrode group.
The electrode group 21 may be a planar electrode. In this case, the electrode arranged on the display side is a transparent electrode. In the second embodiment, the combination of the plurality of vertical linear electrodes 25 and the plurality of horizontal linear electrodes 26 may be a combination of a planar electrode and a matrix electrode group. In this case, the electrode arranged on the display side is a transparent electrode.

[0043]

As described above, according to the present invention, by allowing the electrophoretic recording medium to be separable from the driving device, one driving device and a plurality of driving devices can be used without using a plurality of display devices including the recording material. A plurality of still images to be compared can be generated with a simple and inexpensive configuration including the recording medium of the above. Since a plurality of recording media displaying the same or different still images can be obtained, by arranging them in parallel on a wall surface, a board, or the like, they can be used for various displays such as presentations and presentations at conferences. Further, since the conductive anisotropy and the counter electrode are in contact with the dispersion system, it is possible to generate a high-resolution image with a minimum applied voltage. Further, the combination of electrodes for applying an electric field to the dispersion system may be a combination of a planar electrode and a matrix electrode group, or a plurality of vertical or horizontal linear electrodes and a plurality of horizontal or vertical linear electrodes. With this combination, two-dimensional driving in a matrix can be performed, and an image can be written on a recording medium at high speed.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a configuration of an electrophoretic recording medium according to a first embodiment of the present invention.

FIG. 2 is a front view of a main part of a non-display side substrate according to the present invention.

FIG. 3 is a sectional view showing a configuration of the electrophoretic display device according to the first embodiment of the present invention.

FIG. 4 is a sectional view showing a display state of the electrophoretic recording medium according to the first embodiment.

FIG. 5 is a cross-sectional view illustrating a display state of the electrophoretic recording medium according to the first embodiment.

FIG. 6 is a sectional view showing a configuration of an electrophoretic recording medium according to a second embodiment of the present invention.

FIG. 7 is a sectional view showing a configuration of an electrophoretic display device according to a second embodiment of the present invention.

FIG. 8 is a sectional view showing a display state of an electrophoretic recording medium according to a second embodiment.

FIG. 9 is a sectional view showing a display state of the electrophoretic recording medium according to the second embodiment.

FIG. 10 is a perspective view showing an appearance of an electrophoretic display device according to a third embodiment of the present invention.

[Explanation of symbols]

 1A, 1B Electrophoretic recording body 10 Spacer 11, 18 Display-side substrate of electrophoretic recording body 11a Inner surface of display-side substrate of electrophoretic recording body 12 Non-display-side substrate of electrophoretic recording body 12a, 18a Film 12b, 18b Conductive particles 13 Planar electrode 14 Dispersion medium 15 Electrophoretic particles 16 Dispersion system 17, 22 Connector 20 Non-display side substrate of driving device 20a Surface of non-display side substrate of driving device 21 Matrix electrode group 21a Insulating region 23, 27 power supply circuit 23a, 27a, 27b lead 24 display side substrate of drive device 24a surface of display side substrate of drive device 25 vertical linear electrode 26 horizontal linear electrode 26a insulating area 28 hinge 100A, 100B, 100C electrophoretic display Device S Image signal

Claims (12)

[Claims] 1. A conductive anisotropic electrode having conductivity in a thickness direction and having no conductivity in a vertical width direction and a horizontal width direction, facing the conductive anisotropic electrode at a predetermined interval. And a dispersion system in which a plurality of electrophoretic particles are dispersed in a dispersion medium, which is sealed in the space and has a predetermined space formed between the electrode and the conductive anisotropic electrode. Electrophoretic recording characterized in that an image is displayed by an electric field according to the conductive anisotropy and an image signal applied between the counter electrodes, and the image is retained even after the electric field is erased. body. 2. The electrophoretic recording medium according to claim 1, wherein the counter electrode is any one of a planar electrode, a plurality of vertical linear electrodes, a plurality of horizontal linear electrodes, and a matrix electrode group. . 3. The electrophoretic recording medium according to claim 1, wherein at least one of the conductive anisotropy and the counter electrode is a transparent electrode. 4. The electrophoretic recording medium according to claim 1, wherein the counter electrode is a conductive anisotropic electrode having conductivity in a thickness direction and having no conductivity in a vertical width direction and a horizontal width direction. 5. The conductive anisotropic electrode is a transparent electrode formed by dispersing a plurality of conductive transparent particles in a transparent resin, and a refractive index between the transparent resin and the plurality of conductive transparent particles. 5. The electrophoretic recording material according to claim 1, wherein 6. A conductive anisotropic electrode having conductivity in a thickness direction and having no conductivity in a vertical width direction and a horizontal width direction, facing the conductive anisotropic electrode at a predetermined interval. A counter electrode that forms a predetermined space between the conductive anisotropic electrode and a dispersion system in which a plurality of electrophoretic particles are dispersed in a dispersion medium, An electrophoretic recording medium configured to display an image by an electric field according to the conductive anisotropy and an image signal applied between the counter electrodes, and to retain the image even after the electric field is erased; A drive electrode that is detachably integrated with the electrophoretic recording medium and contacts the conductive anisotropic electrode when the electrophoretic recording medium is mounted; and the conductive anisotropic electrode and the counter electrode through the drive electrode. Applying the electric field according to the image signal between An electrophoretic display device comprising: a driving device including: 7. The counter electrode and the drive electrode may be a combination of a planar electrode and a matrix electrode group, or a plurality of vertical or horizontal linear electrodes and a plurality of horizontal or vertical linear electrodes. The electrophoretic display device according to claim 6, wherein the electrophoretic display device is constituted by a combination of: 8. The electrophoretic display device according to claim 6, wherein at least one of the conductive anisotropic electrode, the driving electrode, and the counter electrode is a transparent electrode. 9. The electrophoretic recording medium according to claim 9, wherein the counter electrode is a conductive anisotropic electrode having conductivity in a thickness direction and having no conductivity in a vertical width direction and a horizontal width direction. 7. The electrophoretic display device according to claim 6, further comprising another drive electrode that comes into contact with the counter electrode when the device is mounted, and wherein the application unit applies the electric field to the counter electrode via the other drive electrode. 10. The driving electrode and the other driving electrode may be a combination of a planar electrode and a matrix electrode group, or a plurality of vertical or horizontal linear electrodes and a plurality of horizontal or vertical electrodes. 10. The electrophoretic display device according to claim 9, wherein the electrophoretic display device is constituted by a combination with a linear electrode. 11. The electrophoretic display device according to claim 9, wherein at least one of the conductive anisotropic electrode and the driving electrode and the counter electrode and the other driving electrode are transparent electrodes. 12. The conductive anisotropic electrode is a transparent electrode formed by dispersing a plurality of conductive transparent particles in a transparent resin, and a refractive index between the transparent resin and the plurality of conductive transparent particles. 10. The electrophoretic display device according to claim 6, wherein