JP2000047266A - Electrophoresis display device and information display system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electrophoresis display device capable of displaying an information by an electric signal inputting with handwritten input and maintaining a sample on a display. SOLUTION: An electrophoresis display device E1 comprises a microcapsule 3 sealing a dispersion system of electrophoresis particles and a dispersion medium. The device has a double layer structure comprising a display portion, which makes the electrophoresis particles move by an electric field effect and displays a photo-receiving type, which has no light-emitting itself, so-called a photo- reflecting type electrophoresis display, and a magnetic layer 6 of a ferromagnetic material or a paramagnetic material set so as to line the backside of the display portion. Written input and erasure are carried out by a potential difference charged between a common electrode 4 forming an electric field and an input pen 7. Further a paper sheet 29 is held between the display portion and the carrier 28 by force generated from magnetism between the carriers 28 consisting of the ferromagnetic material or the paramagnetic material and the magnetic layer 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrophoretic display device for displaying images, sentences, and the like.
In particular, the present invention relates to an electrophoretic display device capable of displaying information by an electric signal, enabling handwriting input, and holding data on a display surface.

[0002]

2. Description of the Related Art In conferences and training venues, as well as in educational institutions such as various schools, a large-sized display device used by a lecturer as an auxiliary tool is essential. The functions required for such a display include a large flat display surface that can be easily viewed by the participants behind the venue, a function that can be freely entered and deleted on the display surface, and materials. Can be freely attached on the display surface.

Conventionally, blackboards have been widely used as such display devices at first, and then whiteboards have become popular in place of blackboards. Further, it has an additional function of attaching a magnet seal to the display surface.

[0004] In recent years, there has been a tendency that demands for a function of displaying information such as images on a display surface by electric signals have been increased. On the other hand, a conventional whiteboard has a function of attaching a magnet seal, but only writes handwritten information, and does not have a function of displaying information by an electric signal, and thus is not suitable for such a use. Therefore, instead of the whiteboard, an electronic display device capable of displaying an image based on an electric signal has attracted attention as a new display tool.

As such an electronic display device,
A display device using a CRT has difficulty in increasing the screen size, and is not structurally suitable for use in which a magnet seal is attached.

Further, in a liquid crystal display device or the like, since a screen may be affected by magnetism, it is not desirable to attach a magnet seal. That is, the display of an electronic display device affected by magnetism is not suitable for use in which a magnet seal is attached.

On the other hand, as a display device capable of forming a large screen, there is an electrophoretic display device (EPID). Among such known electrophoretic display devices, FIG. 6 shows an upper transparent electrode 103 disposed at a distance from a lower transparent electrode 104 disposed on a lower substrate 106. In between, the liquid dispersion medium 101 in which the electrophoretic particles 102 are dispersed is filled, and the upper substrate 105 is used as the uppermost layer.
Shows the configuration provided with.

[0008] A similar structure is disclosed in, for example, Japanese Patent 2551.
No. 783, U.S. Pat.
No. 1012 and Japanese Patent Application Laid-Open No. 08-234686.

[0009]

However, the above-described conventional electrophoretic display device is configured to be capable of displaying information by an electric signal, but is intended only for display as is apparent from the structure. However, it does not have an additional function of attaching a magnet seal to the display screen.

As described above, there has been a display device having a function of displaying information by an electric signal, a function of inputting and writing (writing and erasing functions) by hand, and a function of attaching all of the magnet seals. Did not.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems in the prior art, and enables handwritten input, rewrite, display of information by an electric signal, and further addition. It is an object to provide a display device to which a magnet seal or the like can be attached as a function.

[0012]

In order to solve the above-mentioned problems of the prior art, an electrophoretic display device according to the present invention comprises electrophoretic particles and a colored dispersion medium encapsulated in microcapsules. A magnetic layer made of a ferromagnetic material is provided on at least a part of the back surface of the electrophoretic display unit in which the microcapsules are densely arranged.

According to the above configuration, when the ferromagnetic material forming the magnetic layer is magnetized, the carrier made of the ferromagnetic material or paramagnetic material is provided at a desired position on the front surface of the electrophoretic display device. The carrier is attracted in the direction of the magnetic layer by magnetism generated by a magnetic layer made of a magnetized ferromagnetic material when the carrier is placed. As a result, the carrier is supported on the front surface of the electrophoretic display device by the magnetic force. Is done.

[0014] Further, regardless of whether the magnetic layer is magnetized or not, when a carrier made of magnetized ferromagnetic material is placed at a desired position on the front surface of the electrophoretic display device, As a result of the magnetism generated by the magnetized carrier, the carrier attracts the magnetic layer, and the carrier itself is carried on the front surface of the electrophoretic display device by the magnetic force.

When the ferromagnetic material forming the magnetic layer is magnetized, when the magnetic layer is placed in contact with a wall surface made of a ferromagnetic material or a paramagnetic material, it is held on the wall surface by magnetic action. Is done.

Further, regardless of whether the magnetic layer is magnetized or not, when the magnetic layer is placed in contact with a wall surface made of a magnetized ferromagnetic material, the magnetic layer is held on the wall surface by magnetic action. Is done.

In the information display system according to the present invention, the electrophoretic particles and the colored dispersion medium are encapsulated in microcapsules, and at least the back of the electrophoretic display unit in which a plurality of the microcapsules are densely arranged. An electrophoretic display device provided with a magnetic layer made of a ferromagnetic material in a part thereof, and a carrier made of a ferromagnetic material or a paramagnetic material and capable of being placed at an arbitrary position on a front surface of the electrophoretic display device. Characterized by a combination of:

According to the above configuration, when the ferromagnetic material forming the magnetic layer is magnetized, the ferromagnetic material or paramagnetic material placed at a desired position on the front surface of the electrophoretic display device is used. The carrier is attracted in the direction of the magnetic layer by the magnetism generated by the magnetic layer made of the magnetized ferromagnetic material. As a result, the carrier is carried on the front surface of the electrophoretic display by the magnetic force.

Further, a carrier made of a magnetized ferromagnetic material is provided at a desired position on the front surface of the electrophoretic display device, regardless of whether the magnetic layer is magnetized or not. As a result of the magnetism being applied, the magnetic layer is attracted by the carrier, and the carrier itself is carried on the front surface of the electrophoretic display by this magnetic force.

In the case where the ferromagnetic material forming the magnetic layer is magnetized, if the magnetic layer is placed in contact with a wall surface made of a ferromagnetic material or a paramagnetic material, it is held on the wall surface by magnetic action. Is done.

Further, regardless of whether the magnetic layer is magnetized or not, when the magnetic layer is placed in contact with a wall surface made of a magnetized ferromagnetic material, it is held on the wall surface by magnetic action. Is done.

In a writable electrophoretic display device according to the present invention, electrophoretic particles and a colored dispersion medium are encapsulated in microcapsules, and a plurality of the microcapsules are densely arranged on an electrode layer. An electrophoretic display unit, a magnetic layer made of a ferromagnetic material provided on at least a part of the back surface of the electrophoretic display unit, a power supply capable of outputting at least two kinds of potentials, and a tip of the electrophoretic display unit. An input pen that can be approached to an arbitrary position on the front surface, wherein the high potential side or the low potential side of the power supply is applied to the input pen, the low potential side or the high potential side is applied to the electrode layer, and The applied potential is switchable.

According to the above configuration, when information is written or erased on the electrophoretic display section by the input pen, and the ferromagnetic material forming the magnetic layer is magnetized, the electrophoretic display device is used. When a carrier made of a ferromagnetic material or a paramagnetic material is placed at a desired position on the front surface of the device, the carrier is attracted in the direction of the magnetic layer by magnetism generated by a magnetic layer made of a magnetized ferromagnetic material. As a result, the carrier is carried on the front surface of the electrophoretic display device by the magnetic force.

Further, regardless of whether the magnetic layer is magnetized or not, when a carrier made of magnetized ferromagnetic material is placed at a desired position on the front surface of the electrophoretic display device, As a result of the magnetism generated by the magnetized carrier, the carrier attracts the magnetic layer, and the carrier itself is carried on the front surface of the electrophoretic display device by the magnetic force.

In the case where the ferromagnetic material forming the magnetic layer is magnetized, if the magnetic layer is placed in contact with a wall surface made of a ferromagnetic material or a paramagnetic material, it is held on the wall surface by magnetic action. Is done.

Further, regardless of whether the magnetic layer is magnetized or not, when the magnetic layer is placed in contact with a wall surface made of a magnetized ferromagnetic material, it is held on the wall surface by magnetic action. Is done.

According to the information display system of the present invention, an electrophoretic display section in which electrophoretic particles and a colored dispersion medium are encapsulated in microcapsules, and a plurality of the microcapsules are densely arranged on an electrode layer. A magnetic layer made of a ferromagnetic material provided on at least a part of the back surface of the electrophoretic display unit, a power supply capable of outputting at least two kinds of potentials, and an arbitrary tip on the front surface of the electrophoretic display unit. An input pen which can be approached to a position, and wherein the high potential side or the low potential side of the power supply is applied to the input pen, and the low potential side or the high potential side is applied to the electrode layer, and the power source is applied. A switchable electric potential, a writable electrophoretic display device, and a carrier made of a ferromagnetic material or a paramagnetic material and capable of being placed at an arbitrary position on the front surface of the electrophoretic display device. It can also be realized by the configuration to suit only.

According to the above-described structure, when information is written or erased in the electrophoretic display section by the input pen, and the ferromagnetic material forming the magnetic layer is magnetized, the electrophoretic display device is used. A carrier made of a ferromagnetic material or a paramagnetic material placed at a desired position on the front surface of the magnetic layer is attracted in the direction of the magnetic layer by the magnetism generated by the magnetic layer made of the magnetized ferromagnetic material. Thus, the carrier is carried on the front surface of the electrophoretic display device.

Also, regardless of whether the magnetic layer is magnetized or not, a carrier made of a magnetized ferromagnetic material placed at a desired position on the front surface of the electrophoretic display device is generated. As a result of the magnetism being applied, the magnetic layer is attracted by the carrier, and the carrier itself is carried on the front surface of the electrophoretic display by this magnetic force.

When the ferromagnetic material forming the magnetic layer is magnetized, when the magnetic layer is placed in contact with a wall surface made of a ferromagnetic material or a paramagnetic material, it is held on the wall surface by magnetic action. Is done.

Further, regardless of whether the magnetic layer is magnetized or not, when the magnetic layer is placed in contact with the wall surface made of the magnetized ferromagnetic material, it is held on the wall surface by magnetic action. Is done.

In the electrophoretic display device according to the present invention, the electrophoretic particles and the colored dispersion medium are encapsulated in microcapsules, and a plurality of the microcapsules are densely arranged on the back of the electrophoretic display unit. It can also be realized by a configuration in which a magnetic layer made of a paramagnetic material is provided at least partially.

According to the above configuration, when a carrier made of a magnetized ferromagnetic material is placed at an arbitrary position on the front surface of the electrophoretic display device, the magnetism of the carrier causes the paramagnetic material to move away from the paramagnetic material. As a result of the magnetic layer being attracted in the direction of the carrier, the carrier itself is carried on the front surface of the electrophoretic display device.

Further, when the magnetic layer is placed in contact with the wall surface made of a magnetized ferromagnetic material, it is held on the wall surface by magnetic action.

In the information display system according to the present invention, the electrophoretic particles and the colored dispersion medium are encapsulated in microcapsules, and at least the back of the electrophoretic display section in which a plurality of the microcapsules are densely arranged. An electrophoretic display device provided with a magnetic layer made of a paramagnetic material in a part thereof, and a carrier composed of a magnetized ferromagnetic material and capable of being placed at an arbitrary position on the front surface of the electrophoretic display device. It can also be realized by a combination configuration.

According to the above configuration, the magnetic layer made of the paramagnetic material is formed by the magnetism of the carrier made of the magnetized ferromagnetic material placed at a desired position on the front surface of the electrophoretic display device. As a result of being sucked in the direction of the carrier, the carrier itself is carried on the front surface of the electrophoretic display device.

Further, when the magnetic layer is placed in contact with the wall surface made of a magnetized ferromagnetic material, it is held on the wall surface by magnetic action.

In the writable electrophoretic display device according to the present invention, the electrophoretic particles and the colored dispersion medium are encapsulated in microcapsules, and a plurality of the microcapsules are densely arranged on the electrode layer. An electrophoretic display section, a magnetic layer made of a paramagnetic material provided on at least a part of the back surface of the electrophoretic display section, a power supply capable of outputting at least two kinds of potentials, and a tip of the electrophoretic display section. An input pen that can be approached to an arbitrary position on the front surface, wherein the high potential side or the low potential side of the power supply is applied to the input pen, the low potential side or the high potential side is applied to the electrode layer, and It can also be realized by a configuration in which the applied potential can be switched.

According to the above construction, information is written or erased on the electrophoretic display unit by the input pen, and the carrier made of magnetized ferromagnetic material is placed on the front surface of the electrophoretic display device. As a result, the magnetic layer made of a paramagnetic material is attracted in the direction of the carrier by the magnetism of the carrier,
The carrier itself is carried on the front surface of the electrophoretic display device.

Further, when this magnetic layer is placed in contact with a wall surface made of a magnetized ferromagnetic material, it is held on this wall surface by magnetic action.

In the information display system according to the present invention, the electrophoretic particles and the colored dispersion medium are encapsulated in microcapsules, and a plurality of the microcapsules are densely arranged on the electrode layer. And a magnetic layer made of a paramagnetic material provided on at least a part of the back surface of the electrophoretic display unit, a power supply capable of outputting at least two kinds of potentials, and an arbitrary tip on the front surface of the electrophoretic display unit. An input pen which can be approached to a position, and wherein the high potential side or the low potential side of the power supply is applied to the input pen, and the low potential side or the high potential side is applied to the electrode layer, and the power source is applied. A set of a writable electrophoretic display device with a switchable potential, and a carrier made of a magnetized ferromagnetic material and capable of being placed at an arbitrary position on the front surface of the electrophoretic display device. It can also be realized by the configuration of Align.

According to the above configuration, information is written or erased on the electrophoretic display unit by the input pen, and the magnetized magnet is placed at a desired position on the front surface of the electrophoretic display device. As a result of the magnetic layer of the paramagnetic material being attracted in the direction of the carrier by the magnetism of the carrier of the magnetic material, the carrier itself is carried on the front surface of the electrophoretic display device.

Further, when this magnetic layer is placed in contact with a wall surface made of a ferromagnetic material which is magnetized, it is held on this wall surface by magnetic action.

In the writable electrophoretic display device according to the present invention, the electrophoretic particles and the colored dispersion medium are encapsulated in microcapsules, and a plurality of the microcapsules are densely arranged on the electrode layer. An electrophoretic display unit, a digitizer unit provided on at least a part of a front surface of the electrophoretic display unit, which can be input by an input pen, and a ferromagnetic material provided on at least a part of a rear surface of the electrophoretic display unit. A magnetic layer, a power supply capable of outputting at least two kinds of high and low potentials, and an input pen having a tip close to or press-contactable to an arbitrary position on the front surface of the electrophoretic display unit, and further comprising the high potential side of the power supply. Alternatively, a configuration in which the low potential side is applied to the input pen, the low potential side or the high potential side is applied to the electrode layer, and the applied potential can be switched is also realized. Kill.

According to the above configuration, the digitizer outputs the information on the position coordinates input by the pen. Further, writing or erasing at a desired position of the electrophoretic display unit is performed by the input pen to which the high potential side or the low potential side is given.

In the case where the ferromagnetic material forming the magnetic layer is magnetized, when a support made of a ferromagnetic material or a paramagnetic material is placed at a desired position on the front surface of the electrophoretic display device, it is magnetized. The carrier is attracted in the direction of the magnetic layer by the magnetism generated by the magnetic layer made of the ferromagnetic material, so that the carrier is carried on the front surface of the electrophoretic display device by the magnetic force.

Further, regardless of whether the magnetic layer is magnetized or not, when a carrier made of magnetized ferromagnetic material is placed at a desired position on the front surface of the electrophoretic display device, As a result of the magnetism generated by the magnetized carrier, the carrier attracts the magnetic layer, and the carrier itself is carried on the front surface of the electrophoretic display device by the magnetic force.

When the ferromagnetic material forming the magnetic layer is magnetized, if the magnetic layer is placed in contact with a wall surface made of a ferromagnetic material or a paramagnetic material, it is held on the wall surface by magnetic action. Is done.

Further, regardless of whether the magnetic layer is magnetized or not, if the magnetic layer is placed in contact with a wall surface made of a magnetized ferromagnetic material, it is held on the wall surface by magnetic action. Is done.

In the information display system according to the present invention, the electrophoretic particles and the colored dispersion medium are encapsulated in microcapsules, and a plurality of the microcapsules are densely arranged on the electrode layer. And, provided on at least a part of the front surface of the electrophoretic display unit, a digitizer unit that can be input with an input pen, and a magnetic layer made of a ferromagnetic material provided on at least a part of the back surface of the electrophoretic display unit, A power supply capable of outputting at least two types of potentials,
An input pen whose tip is close to or press-contactable at an arbitrary position on the front surface of the electrophoretic display unit, and the high potential side or the low potential side of the power supply is provided to the input pen,
The low potential side or the high potential side is applied to the electrode layer,
An electrophoretic display device in which the applied potential is switchable, and a carrier made of a ferromagnetic material or a paramagnetic material and capable of being placed at an arbitrary position on the front surface of the electrophoretic display device. It is also possible to configure in combination.

According to the above configuration, the digitizer section outputs information on the position coordinates input by the pen. Further, writing or erasing at a desired position of the electrophoretic display unit is performed by the input pen to which the high potential side or the low potential side is given.

When the ferromagnetic material forming the magnetic layer is magnetized, it is magnetized when a carrier made of a ferromagnetic material or a paramagnetic material is placed at a desired position on the front surface of the electrophoretic display device. The carrier is attracted in the direction of the magnetic layer by the magnetism generated by the magnetic layer made of the ferromagnetic material, so that the carrier is carried on the front surface of the electrophoretic display device by the magnetic force.

Further, regardless of whether the magnetic layer is magnetized or not, when a carrier made of magnetized ferromagnetic material is placed at a desired position on the front surface of the electrophoretic display device, As a result of the magnetism generated by the magnetized carrier, the carrier attracts the magnetic layer, and the carrier itself is carried on the front surface of the electrophoretic display device by the magnetic force.

When the ferromagnetic material forming the magnetic layer is magnetized, when the magnetic layer is placed in contact with the wall surface made of the ferromagnetic material or paramagnetic material, the magnetic layer is held on the wall surface by the magnetic action. Is done.

Further, regardless of whether the magnetic layer is magnetized or not, when the magnetic layer is placed in contact with a wall surface made of a magnetized ferromagnetic material, the magnetic layer is held on the wall surface by magnetic action. Is done.

In the writable electrophoretic display device according to the present invention, the electrophoretic particles and the colored dispersion medium are encapsulated in microcapsules, and a plurality of the microcapsules are densely arranged on the electrode layer. An electrophoretic display unit, a digitizer unit provided on at least a part of a front surface of the electrophoretic display unit, which can be input with an input pen, and a paramagnetic material provided on at least a part of a rear surface of the electrophoretic display unit. A magnetic layer, a power supply capable of outputting at least two kinds of high and low potentials, and an input pen having a tip close to or press-contactable to an arbitrary position on the front surface of the electrophoretic display unit, and further comprising the high potential side of the power supply. Alternatively, a low potential side is applied to the input pen, the low potential side or the high potential side is applied to the electrode layer, and the applied potential can be switched. .

According to the above configuration, the digitizer outputs the information on the position coordinates input by the pen. Further, writing or erasing at a desired position of the electrophoretic display unit is performed by the input pen to which the high potential side or the low potential side is given.

When a carrier made of magnetized ferromagnetic material is placed on the front surface of the electrophoretic display device, the magnetic layer made of paramagnetic material is attracted in the direction of the carrier by the magnetism of the carrier. The body itself is carried on the front of the electrophoretic display.

Further, when the magnetic layer is placed in contact with a wall surface made of a ferromagnetic material that is magnetized, the magnetic layer is held on the wall surface by magnetic action.

In the information display system according to the present invention, the electrophoretic particles and the colored dispersion medium are encapsulated in microcapsules, and the plurality of microcapsules are densely arranged on the electrode layer. And, provided on at least a part of the front surface of the electrophoretic display unit, a digitizer unit that can be input with an input pen, and a magnetic layer made of a paramagnetic material provided on at least a part of the back surface of the electrophoretic display unit, A power supply capable of outputting at least two types of potentials,
An input pen whose tip is close to or press-contactable at an arbitrary position on the front surface of the electrophoretic display unit, and the high potential side or the low potential side of the power supply is provided to the input pen,
The low potential side or the high potential side is applied to the electrode layer,
Combination of an electrophoretic display device in which the applied potential is switchable, and a carrier made of a magnetized ferromagnetic material and capable of being placed at an arbitrary position on the front surface of the electrophoretic display device It can also be realized by the configuration described below.

According to the above configuration, the digitizer section outputs information on the position coordinates input by the pen. Further, writing or erasing at a desired position of the electrophoretic display unit is performed by the input pen to which the high potential side or the low potential side is given.

When a carrier made of a magnetized ferromagnetic material is placed on the front surface of the electrophoretic display device, the magnetic layer made of the paramagnetic material is attracted in the direction of the carrier by the magnetism of the carrier. The body itself is carried on the front of the electrophoretic display.

Further, when this magnetic layer is placed in contact with a wall surface made of a magnetized ferromagnetic material, it is held on this wall surface by magnetic action.

In the electrophoretic display device according to the present invention, the electrophoretic particles and the colored dispersion medium are encapsulated in microcapsules, and the plurality of microcapsules are densely arranged on the electrode layer and bent. An electrophoretic display unit configured so as to be capable of being bent, and a solar cell unit configured to be bendable, comprising at least a part of a back surface of the electrophoretic display unit or the solar cell unit from a ferromagnetic material. It can also be realized by a configuration in which the magnetic layer portion is provided so as to be bent.

According to the above configuration, since the electrophoretic display device performs display by receiving light, a light beam is always incident upon use, and a screen is displayed by reflection of the incident light beam. The solar cell unit is simultaneously operated by the incident light beam. Therefore, the solar cell unit functions as a power supply that always operates when the electrophoretic display device is used.

Furthermore, since the solar battery cell portion is not exposed by being bent when not in use, the surface of dust and the like adhered to the surface during storage can be avoided.

When information is written or erased on the electrophoretic display section by the input pen, and when the ferromagnetic material forming the magnetic layer is magnetized, the desired information on the front surface of the electrophoretic display device can be obtained. When a carrier made of a ferromagnetic material or a paramagnetic material is placed at the position, the carrier is attracted in the direction of the magnetic layer by magnetism generated by a magnetic layer made of a magnetized ferromagnetic material. The carrier is carried on the front surface of the electrophoretic display device by the magnetic force.

Further, regardless of whether the magnetic layer is magnetized or not, when a carrier made of magnetized ferromagnetic material is placed at a desired position on the front surface of the electrophoretic display device, As a result of the magnetism generated by the magnetized carrier, the carrier attracts the magnetic layer, and the carrier itself is carried on the front surface of the electrophoretic display device by the magnetic force.

When the ferromagnetic material forming the magnetic layer is magnetized, if the magnetic layer is placed in contact with a wall surface made of a ferromagnetic material or a paramagnetic material, it is held on the wall surface by magnetic action. Is done.

Further, regardless of whether the magnetic layer is magnetized or not, if the magnetic layer is placed in contact with a wall surface made of a magnetized ferromagnetic material, it is held on the wall surface by magnetic action. Is done.

In the information display system according to the present invention, the electrophoretic particles and the colored dispersion medium are encapsulated in microcapsules, and the plurality of microcapsules are densely arranged on the electrode layer and can be bent. , And at least a part of the back surface of the electrophoretic display unit or the solar cell unit made of a ferromagnetic material. An electrophoretic display device characterized in that the layer portion is provided so as to be bendable, and a support made of a ferromagnetic material or a paramagnetic material and capable of being placed at an arbitrary position on the front surface of the electrophoretic display device It can also be realized by a configuration of a combination with a body.

According to the above configuration, since the electrophoretic display device performs display by receiving light, a light beam always enters when used, and a screen is displayed by reflection of the incident light beam. The solar cell unit is simultaneously operated by the incident light beam. Therefore, the solar cell unit functions as a power supply that always operates when the electrophoretic display device is used.

Further, since the solar battery cell portion is not exposed by being bent when not in use, it is possible to prevent dust and the like from adhering to the surface during storage.

When information is written or erased on the electrophoretic display section by the input pen, and when the ferromagnetic material forming the magnetic layer is magnetized, the desired information on the front surface of the electrophoretic display device can be obtained. When a carrier made of a ferromagnetic material or a paramagnetic material is placed at the position, the carrier is attracted in the direction of the magnetic layer by magnetism generated by a magnetic layer made of a magnetized ferromagnetic material. The carrier is carried on the front surface of the electrophoretic display device by the magnetic force.

Further, regardless of whether the magnetic layer is magnetized or not, when a carrier made of magnetized ferromagnetic material is placed at a desired position on the front surface of the electrophoretic display device, As a result of the magnetism generated by the magnetized carrier, the carrier attracts the magnetic layer, and the carrier itself is carried on the front surface of the electrophoretic display device by the magnetic force.

When the ferromagnetic material forming the magnetic layer is magnetized, if the magnetic layer is placed in contact with a wall surface made of a ferromagnetic material or a paramagnetic material, it is held on the wall surface by magnetic action. Is done.

Further, regardless of whether the magnetic layer is magnetized or not, when the magnetic layer is placed in contact with the wall surface made of the magnetized ferromagnetic material, it is held on the wall surface by magnetic action. Is done.

In the electrophoretic display device according to the present invention, the electrophoretic particles and the colored dispersion medium are encapsulated in microcapsules, and the plurality of microcapsules are densely arranged on the electrode layer and bent. An electrophoretic display unit configured so as to be able to be bent, and a solar cell unit configured to be bendable, comprising at least a part of the electrophoretic display unit or the back surface of the solar cell unit from a paramagnetic material. It can also be realized by a configuration in which the magnetic layer portion is provided so as to be bendable.

According to the above configuration, since the electrophoretic display device performs display by receiving light, a light beam always enters when used, and a screen is displayed by reflection of the incident light beam. The solar cell unit is simultaneously operated by the incident light beam. Therefore, the solar cell unit functions as a power supply that always operates when the electrophoretic display device is used.

Furthermore, since the solar cell unit is not exposed by being bent when not in use, the surface of dust or the like adhered to the surface during storage can be avoided.

Further, information is written or erased on the electrophoretic display unit by the input pen, and a carrier made of magnetized ferromagnetic material is placed at an arbitrary position on the front surface of the electrophoretic display device. Then, the magnetic layer of the paramagnetic material is attracted in the direction of the carrier by the magnetism of the carrier, so that the carrier itself is carried on the front surface of the electrophoretic display device.

Further, when this magnetic layer is placed in contact with a wall surface made of a magnetized ferromagnetic material, it is held on this wall surface by magnetic action.

In the information display system according to the present invention, the electrophoretic particles and the colored dispersion medium are encapsulated in microcapsules, and the plurality of microcapsules are densely arranged on the electrode layer and can be bent. , And at least a part of the back surface of the electrophoretic display unit or the solar cell unit is made of a paramagnetic material. An electrophoretic display device in which the layer portion is bendable,
The present invention can also be realized by a combination of a carrier made of magnetized ferromagnetic material and mountable at an arbitrary position on the front surface of the electrophoretic display device.

According to the above configuration, since the electrophoretic display device performs display by receiving light, a light beam is always incident upon use, and a screen is displayed by reflection of the incident light beam. The solar cell unit is simultaneously operated by the incident light beam. Therefore, the solar cell unit functions as a power supply that always operates when the electrophoretic display device is used.

Further, since the solar battery cell portion is not exposed by being bent when not in use, it is possible to avoid surface adhesion of dust and the like during storage.

In addition, information is written or erased on the electrophoretic display unit by the input pen, and a carrier made of a magnetized ferromagnetic material is placed at an arbitrary position on the front surface of the electrophoretic display device. Then, the magnetic layer of the paramagnetic material is attracted in the direction of the carrier by the magnetism of the carrier, so that the carrier itself is carried on the front surface of the electrophoretic display device.

When the magnetic layer is placed in contact with a wall surface made of a magnetized ferromagnetic material, it is held on the wall surface by magnetic action.

[0088]

Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings. The embodiment described below is a part of a preferred embodiment of the present invention,
Although various limitations that are preferable in terms of the technical configuration are given, the scope of the present invention is not limited to these embodiments unless otherwise specified in the following description.

FIG. 1 is a perspective view of a first embodiment of the electrophoretic display device according to the present invention. FIG. 2 is a schematic sectional view of the electrophoretic display device shown in FIG. FIG. 3 is an enlarged view of a main part of FIG.

As shown in FIG. 1, an electrophoretic display device E1 according to the present invention comprises a magnetic layer 6, a magnetic layer 6 supported by a rectangular support plate 11 provided between frames 12 stood on both sides. 6, a common electrode 4 disposed on the surface of the substrate 5, an electrophoretic display layer Ed composed of the binder 2 and the microcapsules 3 formed on the common electrode 4, and an outermost layer Protective layer 1, input pen 7, and power supply 10.

A carrier 28 is placed at an arbitrary position on the electrophoretic display layer Ed.

The magnetic layer 6 is made of a magnetized ferromagnetic material (that is, a magnet) or a paramagnetic material. The magnetic layer 6 is preferably a flexible magnet sheet for ease of use, but may be plate-shaped.

The support plate 11 is made of either a ferromagnetic material or a paramagnetic material when the magnetic layer 6 is a magnetized ferromagnetic material, and is formed when the magnetic layer 6 is a paramagnetic material. And a ferromagnetic material that is magnetized.

As shown in FIG. 2, the electrophoretic display device E1 has a two-layer structure in which the magnetic layer 6 is additionally provided on the back surface of the electrophoretic display layer Ed.

This electrophoretic display device E1 is manufactured as follows. A substrate 5 of a polyethylene terephthalate (PET) film on which aluminum is deposited is bonded to the magnetic layer 6 with an adhesive as the common electrode 4. Next, the microcapsules 3 are applied to one surface of the common electrode 4 side by an improved doctor blade device.

FIG. 3 is an enlarged view of the microcapsule portion. The microcapsules 3 contain the binder 2
It can be applied like a paint with a vinyl chloride-vinyl acetate copolymer isocyanate curing agent having a secondary hydroxyl group and an organic solvent such as methyl ethyl ketone, toluene, cyclohexane and butyl acetate.

[0097] Before the coating, before drying, the same microcapsules 3 are further sprayed and then pressurized from above to arrange the microcapsules 3 in a denser single layer. Thereafter, the binder resin 2 is cured in an oven under reduced pressure to form the electrophoretic display layer Ed.

The microcapsules 3 are prepared by dispersing a polymerization initiator azoisobutyronitrile with methacrylic acid, methyl methacrylate, n-propyl methacrylic acid, n-butyl methacrylic acid, 2,2,2-trifluoroethyl methacrylic acid. And emulsified by dispersing and emulsifying in a water-alcohol solution, and prepared by an in situ polymerization method.

The prepared microcapsules 3 are sieved and classified to 50 μm. The core material of the microcapsule 3 uses a silicone oil (manufactured by Toray Dow Corning Silicone Co., Ltd.) colored with an azo dye (manufactured by Nippon Kogaku Dye Laboratories) as the dispersion medium 8, and the electrophoretic particles 9 are made of silicone toner (Trade name: Tospearl, manufactured by Toshiba Silicone Co., Ltd.) was used.

The protective layer 1 made of an acrylic ultraviolet curable resin, a thermosetting resin, a fluororesin, or the like is applied to the surface of the electrophoretic display layer Ed having the microcapsules 3 laid thereon, and completed. .

In use, the common electrode 4 and the input pen 7 are connected to the power supply 10, respectively, to generate a voltage difference between them, and write and erase are performed. For example, when the electrophoretic particles 9 have a negative charge, when the input pen 7 side is set to a positive voltage with respect to the common electrode 4 and brought into contact with or close to the surface of the protective layer 1, the position within the microcapsule 3 at that position is increased. The electrophoretic particles 9 migrate to the input pen 7 side, and the incident light is scattered by the moved electrophoretic particles 9 to exhibit white.
Thereby, writing is performed at that position on the screen. Alternatively, an entry is made.

When the polarities of the common electrode 4 and the input pen 7 are reversed, the electrophoretic particles 9 move to the common electrode 4 side, and a part of the spectrum of the incident light is absorbed by the dye in the dispersion medium 8 to form a color. I do. This erases that position on the screen.

As described above, writing and erasing are performed by a change in the polarity of the voltage applied between the common electrode 4 and the input pen 7 or a potential difference. For example, writing and erasing are performed by switching the connection between the positive electrode and the negative electrode of the DC power supply. Toggle erase. The halftone is indicated by the position and number of the electrophoretic particles 9.

As described above, the electrophoretic display device E1 is
The electrophoretic display layer Ed having the magnetic layer 6 on the back surface is formed by microencapsulation of a dispersion system including the electrophoretic particles 9 and the dispersion medium 8, and the electrophoretic particles 9 are formed by the action of an electric field.
Is a display device that performs light-receiving type so-called reflective electrophoretic display in which the light-emitting device does not emit light by itself.

Further, the carrier 28 is provided at an arbitrary position on the uppermost layer, ie, the uppermost protective layer 1 of the electrophoretic display device E1.
Is placed. When the magnetic layer 6 is a ferromagnetic material, a ferromagnetic material or a paramagnetic material is suitable, and when the magnetic layer 6 is a paramagnetic material, a ferromagnetic material is suitable.

According to the combination of the above materials, the carrier 2
The magnetic layer 8 and the magnetic layer 6 are magnetically attracted, so that a paper sheet 29 of a material or document is sandwiched between the carrier 28 and the protective layer 1 on the frontmost layer.

Further, if the carrier 28 itself can directly write a memo or the like on the surface using ink or the like, the carrier 28 itself can be used as a material or a document.

As described above, a high-performance information display system can be realized by combining the electrophoretic display device E1 of the present embodiment with the carrier 28 whose material is appropriately selected as described above. .

The electrophoretic display device E1 can be easily used as a message board because the size of the screen can be easily increased. In this case, as described above, the magnet can be attached on the screen as in the case of the conventional whiteboard, and the convenience of the whiteboard can be realized.

Further, in the electrophoretic display device E1, the electrophoretic display device E1 itself can be removably attached to the support plate 11 by using the magnetic layer 6 provided on the back surface as described above. And repair becomes easier.

Further, since a curved surface can be obtained by using a flexible sheet-like material for the electrophoretic display layer Ed and the magnetic layer 6 including the substrate 5, it is possible to apply the present invention to a wider variety of uses.

FIG. 4 is a schematic sectional view of a second embodiment of the electrophoretic display device according to the present invention. As shown in the figure, in the electrophoretic display device E2 according to the present invention, an input tablet (digitizer) 40 for detecting pen coordinates is attached to the front surface of an electrophoretic layer (EPID) 41, on the other hand,
A magnetic layer 42 is provided on the back surface of the electrophoretic layer 41 so as to be lined, and has a three-layer structure.

The electrophoretic display device E2 is manufactured as follows. The unprocessed surface of a PET (polyethylene terephthalate) film 50 having a plurality of parallel linear patterned indium oxide (ITO) electrodes 51 on one side and the other side unprocessed is Glue to one side with adhesive. The magnetic substrate 49 is made of a flexible ferromagnetic or paramagnetic sheet material.

A coating comprising a microcapsule 46 and an organic solvent such as a vinyl chloride / vinyl acetate copolymer isocyanate curing agent having a secondary hydroxyl group, methyl ethyl ketone, toluene, cyclohexane, and butyl acetate is applied on the surface of the electrode 51. .

Next, before the coated surface is dried, the microcapsules 46 are further dispersed and pressurized from above to arrange the microcapsules 46 in a single layer. Further, a PET film substrate 48 having a plurality of transparent electrodes 47 made of indium oxide and patterned in parallel lines is bonded so that the electrodes are perpendicular to each other. Thereafter, the binder resin is cured in an oven under reduced pressure to form a panel. A resistive pressure-sensitive tablet (digitizer) 40 is mounted thereon to complete the electrophoretic display device E2 capable of inputting with a pen.

The magnetic substrate 49 may be a rigid solid plate instead of the flexible magnet sheet.

The input tablet 40 detects the coordinates of the position pressed by the pen. In the present embodiment, a resistive pressure-sensitive type is adopted. In the input tablet 40, a pair of thin film resistors 44, 44 have a gap (air layer).
The outer sides of both thin film resistors 44, 44 are formed and are covered with protective layers 43, 43 made of PET. With this configuration, the coordinate information of the position specified by pressing the pen can be output to the outside. It should be noted that the input tablet includes an electromagnetic induction type, an electrostatic coupling type, and the like, and any of them is applicable.

Next, the operation of the electrophoretic display device E2 will be described. By applying a potential difference to the portion of interest between the transparent electrode 47 and the electrode 51, the electrophoretic particles in the microcapsule 46 at the corresponding portion move to the transparent electrode 47 side or the electrode 5 side, and display is performed. Therefore, an image is displayed on the electrophoretic layer 41 by inputting an image signal as a potential difference to each portion between the transparent electrode 17 and the electrode 51.

Here, when the tip of the input pen 52 connected to the power supply is brought close to the surface of the tablet 40 at a desired coordinate position so as to have a predetermined high potential or low potential, the input pen 52 and the transparent electrode 47 Alternatively, as a result of the change in the potential gradient between the electrodes 51, the electrophoretic particles in the microcapsules 46 move to either the transparent electrode 47 side or the electrode 51 side, whereby display (writing) or erasing is performed.

Since the electrophoretic particles in the microcapsules 46 have a memory effect of maintaining their positions for a while after the movement, the display (writing) or erasing state for a while even if the input pen 52 is moved away here. Will be maintained.

On the other hand, when the input pen 52 is disconnected from the power supply and a desired coordinate position on the surface of the tablet 40 is pressed down with the tip of the input pen 52, a change occurs in the resistance value of the corresponding position of the tablet 40. The position information is taken out as a signal to the outside.

The input pen 52 is connected to a power source,
When the surface of the tablet 40 is depressed in a state of a predetermined high potential or a low potential, display (writing) or erasing by movement of the electrophoretic particles in the microcapsule 46 is performed, and at the same time, the tablet 40 is displayed. , The coordinate position information is extracted to the outside as a signal. This is particularly effective when the same information is input to another display device or system as update information while writing and erasing the information on the screen.

Next, a description will be given of the material and document pasting function. The material or document is written or printed on a paper sheet or the like, and is sandwiched between the PET film 43 of the frontmost layer by the carrier 53. The material of the carrier 53 is preferably a ferromagnetic material or a paramagnetic material when the magnetic layer 42 is a ferromagnetic material, and a ferromagnetic material when the magnetic layer 42 is a paramagnetic material.

With the combination of the above materials, the carrier 5
3 and the magnetic layer 42 are magnetically attracted, whereby materials and documents are sandwiched between the carrier 53 and the frontmost PET film 43.

Further, if the carrier 53 itself can directly write a memo or the like on the surface using ink or the like, the carrier 53 itself can be used as a material or a document.

As described above, a high-performance information display system can be realized by combining the electrophoretic display device E2 of the present embodiment with the carrier 53 whose material is appropriately selected as described above. .

As described above, the electrophoretic display device E2 of the present embodiment can display a video signal from a computer or a video with high quality due to its high resolution. In addition, since information input by a pen can be transferred to a computer by the equipped tablet 40, the same function as that of a display device such as a portable information terminal, a palmtop personal computer, or a notebook personal computer is provided as one of its functions. Is what you do.

Furthermore, various formats can be prepared and prepared in advance by utilizing the function of writing with an electric signal, so that it can be used for various purposes. That is, the present invention can be applied as a message board using a network function of a computer.

Next, the electrophoretic display device E according to the present invention will be described.
A third embodiment will be described. Originally, the electrophoretic display device has a light-receiving display configuration instead of a self-luminous display configuration, so that a certain level of illuminance is essential for the display environment. That is, it is used under appropriate illuminance.

Therefore, the present invention is provided with a photovoltaic power generation unit capable of generating power using this illuminance environment. It is preferable to use a solar cell as the photovoltaic unit. Electricity extracted from the photovoltaic unit is used not only as a power source for an input pen but also as a power source for driving an electrophoretic layer.

FIG. 5 shows an electrophoretic display device E according to the present invention.
FIG. 13 is a perspective view illustrating a configuration of a third embodiment. As shown in the drawing, the electrophoretic display device E3 includes an electrophoretic display unit 60, a solar cell unit 61, and a control unit 6.
2 and a magnetic layer portion 63 lining these. The electrophoretic display unit 60 is the same as in each of the above embodiments. The magnetic layer 63 is made of a magnetized ferromagnetic material or paramagnetic material. Further, the control unit 62 supplies the power generated by the solar cell unit 61 to the input pen 64 connected via the connector 62a or to the electrode of the electrophoretic display unit 60.

Further, each of these parts is configured to have flexibility, so that the whole can be wound and housed in a cylindrical case 66 as shown in the figure. An input pen 64 and a carrier 65 that functions as a magnet seal can be used in combination with the electrophoretic display device E3.

The carrier 65 can be placed at an arbitrary position on the uppermost protective layer of the electrophoretic display device E3. The material of the carrier 65 is selected when the magnetic layer 63 is a ferromagnetic material. A ferromagnetic material or a paramagnetic material is suitable. When the magnetic layer 63 is a paramagnetic material, a ferromagnetic material is suitable.

By the combination of the above materials, the carrier 6
5 and the magnetic layer portion 63 are magnetically attracted, whereby the paper sheet of the material or document is transferred to the carrier 65 and the electrophoretic display device E3.
Between the protective layer and the uppermost protective layer.

Further, if the carrier 65 itself can directly write a memo or the like on the surface using ink or the like, the carrier 65 itself can be used as a material or a document.

As described above, by combining the electrophoretic display device E3 of the present embodiment with the carrier 65 whose material is appropriately selected as described above, a high-performance information display system can be realized. .

In use, the entrained electrophoretic display device E3 is taken out of the case 66 and expanded, and when the magnetic layer 63 is made of a ferromagnetic material with magnetism, for example, a paramagnetic material such as a wall surface of an iron fixture is used. It is stuck on the support wall of the material or ferromagnetic material. When the magnetic layer 63 is made of a paramagnetic material, it is attached to a support wall having a magnetized ferromagnetic material. Further, the input pen 64 is connected to the connector 62 of the control unit 62.
Connect to a and make it usable.

If there is enough illuminance of light to confirm the image displayed on the electrophoretic display section 60 in the use environment, the solar cell section 61 generates power to drive the electrophoretic display section 60 and the input pen 64, and An image is displayed on the electrophoretic display unit 60, and writing or erasing at any position on the screen using the input pen 64 becomes possible. The carrier 65, which is a magnet seal, can be attached to a desired position on the electrophoretic display unit 60 as needed.

Further, as another embodiment, there is an alternative to a drafting sheet in a drafting operation. Currently, CAD in the field of drafting
Although the CRT screen is small, the size of the CRT screen must be reduced to display the entire large-sized drawing. However, according to the display device of the present invention, a large-screen electrophoretic display unit is possible. Because of this, large-format drawings can be displayed as a whole without being reduced, making them easier to see, and the eyes are not tired. In addition, input can be performed as if writing on a conventional drafting board, and writing can be performed using CAD software by connecting to a computer, thereby facilitating work.

As described above, according to the configuration of the present invention, an external signal such as a computer display can be displayed.
Further, it is possible to provide a display device which can be freely written and erased, and which can be pasted with a magnet seal or the like.

[0141]

As described in detail above, claim 1 of the present invention
The electrophoretic display device according to the present invention has a configuration in which a magnetic layer made of a ferromagnetic material is provided on at least a part of the back surface of the electrophoretic display unit in which a plurality of microcapsules are densely arranged. If the carrier is made of a ferromagnetic material or a paramagnetic material at a desired position on the front surface of the electrophoretic display device, the magnetism generated by the magnetic layer attracts the carrier toward the magnetic layer. Thus, the carrier can be carried on the front surface of the electrophoretic display device.

[0142] Regardless of whether the magnetic layer is magnetized or not, the carrier made of magnetized ferromagnetic material is placed at a desired position on the front surface of the electrophoretic display device. Attracts the magnetic layer by the generated magnetism. As a result, the carrier itself can be carried on the front surface of the electrophoretic display device.

When the ferromagnetic material forming the magnetic layer is magnetized, the electrophoretic display device is placed on the wall by placing the magnetic layer in contact with the wall surface made of the ferromagnetic material or paramagnetic material. Can be held.

Further, when the wall surface is magnetized, the electrophoretic display device can be held on the wall surface regardless of whether the magnetic layer is magnetized or not.

According to a second aspect of the present invention, there is provided an information display system comprising: an electrophoretic display device in which a plurality of the microcapsules are densely arranged; When the magnetic layer is magnetized, the magnetic layer attracts the carrier so that the carrier is electrophoresed because it is configured in combination with a carrier composed of a ferromagnetic material or a paramagnetic material. It can be carried on the front of the display device.

[0146] Regardless of whether the magnetic layer is magnetized or not, a carrier made of magnetized ferromagnetic material is generated at a desired position on the front surface of the electrophoretic display device. As a result of attracting the magnetic layer by magnetism, the carrier itself can be carried on the front surface of the electrophoretic display device.

When the ferromagnetic material forming the magnetic layer is magnetized, the magnetic layer can be held on the wall surface by placing the magnetic layer in contact with the wall surface made of the ferromagnetic material or paramagnetic material.

Further, regardless of whether the magnetic layer is magnetized or not, the electrophoretic display device is placed on the wall by placing the magnetic layer on the wall made of the magnetized ferromagnetic material. Can be retained.

The writable electrophoretic display device according to claim 3 of the present invention comprises an electrophoretic display unit in which a plurality of microcapsules are densely arranged on an electrode layer, and a ferromagnetic material provided on the back surface thereof. A magnetic layer made of a ferromagnetic material provided on the back of the electrophoretic display unit,
Since the input pen and the power supply that outputs two kinds of high and low switchable potentials to the electrode layer are configured, writing or erasing can be performed by the input pen to which the potential is applied.

Further, a carrier made of a magnetized ferromagnetic material or a ferromagnetic material or a paramagnetic material can be carried on the front surface of the electrophoretic display device. Further, the electrophoretic display device can be held on the wall surface by placing the magnetic layer in contact with the wall surface made of a ferromagnetic material or a ferromagnetic material or a paramagnetic material that is magnetized.

An information display system according to a fourth aspect of the present invention is an information display system comprising: an electrophoretic display section in which a plurality of microcapsules are densely arranged on an electrode layer; , An input pen, a magnetic layer made of a ferromagnetic material provided on the back of the electrophoretic display unit, and a power supply that outputs two kinds of high and low switchable potentials to the input pen and the electrode layer And a carrier made of a ferromagnetic material or a paramagnetic material, so that writing or erasing can be performed by an input pen to which a potential is applied.

Further, a carrier made of a magnetized ferromagnetic material or a ferromagnetic material or a paramagnetic material can be carried on the front surface of the electrophoretic display device. Further, the electrophoretic display device can be held on the wall surface by placing the magnetic layer in contact with the wall surface made of a ferromagnetic material or a ferromagnetic material or a paramagnetic material that is magnetized.

An electrophoretic display device according to a fifth aspect of the present invention has a configuration in which a magnetic layer made of a paramagnetic material is provided on the back surface of an electrophoretic display unit in which a plurality of microcapsules are densely arranged. Therefore, the carrier made of the magnetized ferromagnetic material can be carried on the front surface of the electrophoretic display device.

Further, by placing this magnetic layer in contact with a wall surface made of a magnetized ferromagnetic material, the electrophoretic display device can be held on this wall surface.

[0155] An information display system according to claim 6 of the present invention comprises: an electrophoretic display device in which a magnetic layer made of a paramagnetic material is provided on the back of an electrophoretic display unit in which a plurality of microcapsules are densely arranged; Since the present invention is configured to be combined with a carrier made of a magnetized ferromagnetic material, the carrier made of a magnetized ferromagnetic material can be carried on the front surface of the electrophoretic display device.

Further, by placing this magnetic layer in contact with the wall surface made of a magnetized ferromagnetic material, the electrophoretic display device can be held on this wall surface.

According to a seventh aspect of the present invention, there is provided a writable electrophoretic display device comprising: an electrophoretic display unit in which a plurality of microcapsules are densely arranged on an electrode layer; an input pen; and a back surface of the electrophoretic display unit. A magnetic layer made of paramagnetic material,
Since the input pen and the power supply that outputs two kinds of high and low switchable potentials to the electrode layer are configured, writing or erasing can be performed by the input pen to which the potential is applied.

In addition, a carrier made of a magnetized ferromagnetic material can be carried on the front surface of the electrophoretic display device.
Further, the electrophoretic display device can be held on the wall surface by placing the magnetic layer in contact with the wall surface made of a magnetized ferromagnetic material.

The information display system according to the eighth aspect of the present invention is provided with an electrophoretic display unit in which a plurality of microcapsules are densely arranged on an electrode layer, an input pen, and a back surface of the electrophoretic display unit. An electrophoretic display device comprising a magnetic layer made of a paramagnetic material, and a power supply that outputs two types of switchable potentials to the input pen and the electrode layer, and a carrier made of a magnetized ferromagnetic material , Writing or erasing can be performed by an input pen to which a potential is applied.

Further, a carrier made of a magnetized ferromagnetic material can be carried on the front surface of the electrophoretic display device.
Further, the electrophoretic display device can be held on the wall surface by placing the magnetic layer in contact with the wall surface made of a magnetized ferromagnetic material.

A fillable electrophoretic display device according to a ninth aspect of the present invention provides an electrophoretic display unit in which a plurality of microcapsules are densely arranged on an electrode layer, an input pen, and an input pen capable of inputting. Since it is composed of a digitizer section, a magnetic layer made of ferromagnetic material provided on the back of the electrophoretic display section, and a power supply that outputs two types of high and low switchable potentials to the input pen and the electrode layer, The information of the position coordinates input by the pen can be output by the digitizer unit, and writing or erasing can be performed by the input pen to which the potential is applied.

Further, a carrier made of a magnetized ferromagnetic material or a ferromagnetic material or paramagnetic material can be carried on the front surface of the electrophoretic display device. Further, the electrophoretic display device can be held on the wall surface by placing the magnetic layer in contact with the wall surface made of magnetized ferromagnetic material or ferromagnetic material or paramagnetic material.

According to a tenth aspect of the present invention, there is provided an information display system comprising: an electrophoretic display unit in which a plurality of microcapsules are densely arranged on an electrode layer; an input pen; A magnetic layer made of a ferromagnetic material provided on the back of the electrophoretic display unit, an electrophoretic display unit including a power source that outputs two types of switchable potentials to the input pen and the electrode layer, and a ferromagnetic material or Since it is composed of a combination with a carrier made of a paramagnetic material, it is possible to output information on the position coordinates input by the pen by the digitizer unit, and it becomes possible to write or erase with an input pen to which a potential is applied.

Further, a carrier made of a magnetized ferromagnetic material or a ferromagnetic material or a paramagnetic material can be carried on the front surface of the electrophoretic display device. Further, the electrophoretic display device can be held on the wall surface by placing the magnetic layer in contact with the wall surface made of magnetized ferromagnetic material or ferromagnetic material or paramagnetic material.

The writable electrophoretic display device according to the eleventh aspect of the present invention provides an electrophoretic display unit in which a plurality of microcapsules are densely arranged on an electrode layer, an input pen, and an input pen capable of inputting. Digitizer section, a magnetic layer made of a paramagnetic material provided on the back of the electrophoretic display section, and a power supply that outputs two types of high and low switchable potentials to the input pen and the electrode layer, The information of the position coordinates input by the pen can be output by the digitizer unit, and writing or erasing can be performed by the input pen to which the potential is applied.

In addition, a carrier made of a magnetized ferromagnetic material can be carried on the front surface of the electrophoretic display device.
Further, the electrophoretic display device can be held on the wall surface by placing the magnetic layer in contact with the wall surface made of a magnetized ferromagnetic material.

According to a twelfth aspect of the present invention, there is provided an information display system comprising: an electrophoretic display unit in which a plurality of microcapsules are densely arranged on an electrode layer; an input pen; An electrophoretic display device including a magnetic layer made of a paramagnetic material provided on the back of the electrophoretic display unit, and a power supply that outputs two types of high and low switchable potentials to an input pen and an electrode layer; Since it is made of a magnetic material and is configured to be combined with a carrier that can be placed at an arbitrary position on the front surface of the electrophoretic display device, it is possible to output information of position coordinates input by a pen by the digitizer unit, Writing or erasing can be performed by an input pen to which a potential is applied.

In addition, a carrier made of a magnetized ferromagnetic material can be carried on the front surface of the electrophoretic display device.
Further, the electrophoretic display device can be held on the wall surface by placing the magnetic layer in contact with the wall surface made of a magnetized ferromagnetic material.

An electrophoretic display device according to a thirteenth aspect of the present invention comprises: an electrophoretic display section in which a plurality of microcapsules are densely arranged on an electrode layer and which is configured to be foldable; The solar cell part and the magnetic layer part made of ferromagnetic material are provided on these backs so that they can be bent, so that the solar cell part always operates by the incident light when using the electrophoretic display device. A carrier that operates as a power source and is made of ferromagnetic material or magnetized ferromagnetic material or paramagnetic material can be carried on the front surface of the electrophoretic display.

Further, by placing this magnetic layer in contact with a wall surface made of a magnetized ferromagnetic material or a ferromagnetic material or paramagnetic material, the electrophoretic display device can be held on this wall surface.

An information display system according to a fourteenth aspect of the present invention is configured such that a plurality of microcapsules are densely arranged on an electrode layer and are configured to be foldable, and are configured to be foldable. A combination of a solar cell unit, an electrophoretic display device having a bendable magnetic layer portion made of a ferromagnetic material on the back thereof, and a carrier made of a ferromagnetic material or a paramagnetic material. Because
The solar cell unit operates as a power source that is always operated by incident light when the electrophoretic display device is used, and a carrier made of magnetized ferromagnetic material or ferromagnetic material or paramagnetic material is placed on the front surface of the electrophoretic display device. Can be carried.

Further, by placing the magnetic layer in contact with a wall surface made of a magnetized ferromagnetic material or a ferromagnetic material or a paramagnetic material, the electrophoretic display device can be held on the wall surface.

An electrophoretic display device according to a fifteenth aspect of the present invention includes an electrophoretic display portion in which a plurality of microcapsules are densely arranged on an electrode layer and is configured to be bendable. The solar cell part and the magnetic layer part made of paramagnetic material on these backs are equipped so as to be bendable, so the solar cell part is always operated by the incident light when using the electrophoretic display device Acting as a power supply, a carrier made of a magnetized ferromagnetic material can be carried on the front surface of the electrophoretic display device.

Further, by placing the magnetic layer in contact with a wall surface made of a magnetized ferromagnetic material, the electrophoretic display device can be held on the wall surface.

An information display system according to a sixteenth aspect of the present invention is configured such that a plurality of microcapsules are densely arranged on an electrode layer and are configured to be foldable, and are configured to be foldable. Solar cell unit, an electrophoretic display device having a bendable magnetic layer made of a paramagnetic material on the back thereof, and a support made of a magnetized ferromagnetic material. Therefore, the solar cell unit functions as a power source that is always operated by the incident light when the electrophoretic display device is used.

In addition, a carrier made of a magnetized ferromagnetic material can be carried on the front surface of the electrophoretic display device.
Further, by placing the magnetic layer in contact with the wall surface made of a magnetized ferromagnetic material, the electrophoretic display device can be held on the wall surface.

[Brief description of the drawings]

FIG. 1 is a perspective view of a first embodiment of an electrophoretic display device according to the present invention.

FIG. 2 is a schematic sectional view of the electrophoretic display device shown in FIG.

FIG. 3 is an enlarged view of a main part of FIG. 2;

FIG. 4 is a schematic sectional view of a second embodiment of the electrophoretic display device according to the present invention.

FIG. 5 is a perspective view of a third embodiment of the electrophoretic display device according to the present invention.

FIG. 6 is a sectional view of a conventional electrophoretic display device.

[Explanation of symbols]

E1: electrophoretic display device of the first embodiment, Ed: electrophoretic display layer, 1: protective layer, 2 ... binder, 3 ... microcapsule, 4 ... common electrode, 5 ... substrate, 6 ... magnetic layer, 7 ... input Pen, 8: dispersion medium, 9: electrophoretic particles, 10: power supply,
11 ... support plate, 12 ... frame, 28 ... carrier, 29 ...
Paper sheet

Claims (16)

[Claims] An electrophoretic particle and a colored dispersion medium are encapsulated in microcapsules, and at least a part of a back surface of an electrophoretic display unit in which a plurality of the microcapsules are densely arranged is made of a ferromagnetic material. An electrophoretic display device comprising a magnetic layer. 2. An electrophoretic particle and a colored dispersion medium are encapsulated in a microcapsule, and at least a part of a back surface of an electrophoretic display unit in which a plurality of the microcapsules are densely arranged is made of a ferromagnetic material. Information composed of a combination of an electrophoretic display device provided with a magnetic layer and a carrier made of a ferromagnetic material or a paramagnetic material and capable of being placed at an arbitrary position on the front surface of the electrophoretic display device Display system. 3. An electrophoretic display section in which electrophoretic particles and a colored dispersion medium are encapsulated in microcapsules, wherein a plurality of the microcapsules are densely arranged on an electrode layer; A magnetic layer made of a ferromagnetic material provided on at least a part of a back surface of the electrophoretic display unit; a power source capable of outputting at least two kinds of potentials; and an input pen whose tip can approach an arbitrary position on the front surface of the electrophoretic display unit. Wherein the high potential side or the low potential side of the power supply is applied to the input pen, the low potential side or the high potential side is applied to the electrode layer, and the applied potential is switchable. A writable electrophoretic display device characterized by the following. 4. An electrophoretic display section in which electrophoretic particles and a colored dispersion medium are encapsulated in microcapsules, wherein a plurality of the microcapsules are densely arranged on an electrode layer.
A magnetic layer made of a ferromagnetic material provided on at least a part of the back surface of the electrophoretic display unit, a power supply capable of outputting at least two types of potentials, and a tip at an arbitrary position on the front surface of the electrophoretic display unit. An input pen that can be approached, and the high potential side or the low potential side of the power supply is applied to the input pen, the low potential side or the high potential side is applied to the electrode layer, and the applied potential is A switchable, writable electrophoretic display device, and a combination of a ferromagnetic material or a paramagnetic material and a carrier that can be placed at an arbitrary position on the front surface of the electrophoretic display device Information display system. 5. The electrophoretic particles and a colored dispersion medium are encapsulated in microcapsules, and at least a part of the back surface of an electrophoretic display unit in which a plurality of the microcapsules are densely arranged is made of a paramagnetic material. An electrophoretic display device comprising a magnetic layer. 6. An electrophoretic particle and a colored dispersion medium are encapsulated in microcapsules, and at least a portion of the back surface of an electrophoretic display unit in which a plurality of the microcapsules are densely arranged is made of a paramagnetic material. An information display comprising a combination of an electrophoretic display device provided with a magnetic layer and a carrier made of a magnetized ferromagnetic material and capable of being placed at an arbitrary position on the front surface of the electrophoretic display device. system. 7. An electrophoretic display section in which electrophoretic particles and a colored dispersion medium are encapsulated in microcapsules, wherein the plurality of microcapsules are densely arranged on an electrode layer; A magnetic layer made of a paramagnetic material provided on at least a part of a back surface of the electrophoretic display unit; a power supply capable of outputting at least two kinds of potentials; and an input pen whose tip can approach any position on the front surface of the electrophoretic display unit. Wherein the high potential side or the low potential side of the power supply is applied to the input pen, the low potential side or the high potential side is applied to the electrode layer, and the applied potential is switchable. A writable electrophoretic display device characterized by the following. 8. An electrophoretic display unit in which electrophoretic particles and a colored dispersion medium are encapsulated in microcapsules, wherein a plurality of the microcapsules are densely arranged on an electrode layer.
A magnetic layer made of a paramagnetic material provided on at least a part of the back surface of the electrophoretic display unit, a power supply capable of outputting at least two types of potentials, and a tip located at an arbitrary position on the front surface of the electrophoretic display unit. An input pen that can be approached, and the high potential side or the low potential side of the power supply is applied to the input pen, the low potential side or the high potential side is applied to the electrode layer, and the applied potential is A switchable, writable electrophoretic display device, and a combination of a magnetizable ferromagnetic material and a carrier that can be placed at an arbitrary position on the front surface of the electrophoretic display device. Information display system. 9. An electrophoretic display unit in which electrophoretic particles and a colored dispersion medium are encapsulated in microcapsules, a plurality of the microcapsules being densely arranged on an electrode layer, and the electrophoretic display unit. A digitizer unit provided on at least a part of the front surface of the electrophoretic display unit and capable of inputting with an input pen; a magnetic layer made of a ferromagnetic material provided on at least a part of the back surface of the electrophoretic display unit; An output power source, and an input pen having a tip that can be close to or pressed against an arbitrary position on the front surface of the electrophoretic display unit, and the high potential side or the low potential side of the power source is applied to the input pen, The writable electrophoretic display device, wherein the low potential side or the high potential side is applied to the electrode layer, and the applied potential is switchable. 10. The electrophoretic particles and a colored dispersion medium,
An electrophoretic display unit in which a plurality of the microcapsules are densely arranged on the electrode layer, and the microcapsules are provided in at least a part of a front surface of the electrophoretic display unit. A digitizer unit, a magnetic layer made of a ferromagnetic material provided on at least a part of a back surface of the electrophoretic display unit, a power supply capable of outputting at least two kinds of potentials, and a front end on the front surface of the electrophoretic display unit. An input pen that can be close to or pressed against an arbitrary position, the high potential side or the low potential side of the power supply is applied to the input pen, the low potential side or the high potential side is applied to the electrode layer, and An electrophoretic display device capable of switching the applied potential; and a ferromagnetic material or a paramagnetic material, which can be mounted at an arbitrary position on the front surface of the electrophoretic display device. An information display system configured with a combination of a suitable carrier. 11. An electrophoretic particle and a colored dispersion medium,
An electrophoretic display section in which a plurality of the microcapsules are densely arranged on an electrode layer; and an input pen provided on at least a part of a front surface of the electrophoretic display section, the input section being capable of being input by an input pen. A digitizer section, a magnetic layer made of a paramagnetic material provided on at least a part of a back surface of the electrophoretic display section, a power supply capable of outputting at least two kinds of potentials, and a front end of a front face of the electrophoretic display section. An input pen which can be close to or pressed against an arbitrary position, wherein the high potential side or the low potential side of the power supply is applied to the input pen, the low potential side or the high potential side is applied to the electrode layer, and A writable electrophoretic display device, wherein the applied potential is switchable. 12. The electrophoretic particles and a colored dispersion medium,
An electrophoretic display unit in which a plurality of the microcapsules are densely arranged on an electrode layer, which is enclosed in a microcapsule, and at least a part of a front surface of the electrophoretic display unit, which can be input by an input pen. A digitizer section, a magnetic layer made of a paramagnetic material provided on at least a part of a back surface of the electrophoretic display section, a power supply capable of outputting at least two kinds of potentials, and a tip on a front face of the electrophoretic display section. An input pen that can be close to or pressed against an arbitrary position, the high potential side or the low potential side of the power supply is applied to the input pen, the low potential side or the high potential side is applied to the electrode layer, and An electrophoretic display device in which the applied potential is switchable; and a carrier that is made of a magnetized ferromagnetic material and can be placed at an arbitrary position on the front surface of the electrophoretic display device. An information display system composed of a combination of 13. The electrophoretic particles and a colored dispersion medium,
The microcapsules are encapsulated, a plurality of the microcapsules are densely arranged on the electrode layer, and a bendable electrophoretic display unit, and a bendable solar cell unit, An electrophoretic display device comprising: at least a part of a back surface of the electrophoretic display unit or the solar cell unit, wherein a magnetic layer unit made of a ferromagnetic material is bendably provided. 14. The electrophoretic particles and a colored dispersion medium,
A plurality of the microcapsules are sealed in microcapsules, the plurality of the microcapsules are densely arranged on the electrode layer, and an electrophoretic display unit configured to be foldable, and a solar cell unit configured to be foldable. An electrophoretic display device comprising at least a magnetic layer portion made of a ferromagnetic material and provided on at least a part of a back surface of the electrophoretic display portion or the back surface of the solar battery cell portion; An information display system comprising a combination of a material or a paramagnetic material and a carrier that can be placed at an arbitrary position on the front surface of the electrophoretic display device. 15. The electrophoretic particles and a colored dispersion medium,
The microcapsules are encapsulated, a plurality of the microcapsules are densely arranged on the electrode layer, and a bendable electrophoretic display unit, and a bendable solar cell unit, An electrophoretic display device comprising: at least a part of a back surface of the electrophoretic display unit or the solar cell unit, wherein a magnetic layer unit made of a paramagnetic material is foldably provided. 16. An electrophoretic particle and a colored dispersion medium,
A plurality of the microcapsules are sealed in microcapsules, the plurality of the microcapsules are densely arranged on the electrode layer, and an electrophoretic display unit configured to be foldable, and a solar cell unit configured to be foldable. An electrophoretic display device including at least a magnetic layer portion made of a paramagnetic material on at least a part of the back surface of the electrophoretic display portion or the back surface of the solar cell portion, the magnetic layer portion being provided with a bendable ferromagnetic material. An information display system comprising a combination of a carrier configured and capable of being placed at an arbitrary position on the front surface of the electrophoretic display device.