JP5184970B2 - Display control device - Google Patents

Description

  The present invention relates to a display control device that controls display of a thin plate-like display unit that displays information by a potential difference generated between the front and back sides.

  Conventionally, as a display device for displaying information, a CRT display, a liquid crystal display, a plasma display, and the like are used. These are used in a television receiver to display a television image transmitted from a television station or a personal computer. It is possible to display information stored in a personal computer or information distributed via the Internet. Each of these display devices has advantages and disadvantages. For example, a CRT display has a wide viewing angle but a large depth size, and a liquid crystal display has a thin depth size but a narrow viewing angle, and a plasma display. Has a large viewing angle and a small depth size, but consumes a lot of power.

  In recent years, in addition to the display devices as described above, electronic paper that displays digital information on a thin display medium such as paper has begun to spread. Electronic paper changes the state of a substance by causing a potential difference between the two electrodes by interposing a substance whose state changes due to the charge applied to the two electrodes between two electrodes facing each other. Information is displayed using the change of the substance (see, for example, Patent Document 1). Such electronic paper is easy to carry because it is thin like paper, consumes less power, has a wide viewing angle, and can rewrite information displayed by the charge applied to the electrodes, Since the display contents can be retained even when the power is turned off, further spread in the future is expected.

  FIG. 6 is a cross-sectional view illustrating an example of the structure of general electronic paper.

  In this example, as shown in FIG. 6, a display unit 110 for displaying information, a transparent electrode 122 and a plurality of display electrodes 121 a to 121 h arranged on the front and back of the display unit 110 to face each other, and a transparent electrode 122 and the voltage controller 130 for applying a voltage to the display electrodes 121a to 121h. The display unit 110 includes a transparent substrate 111 in which a plurality of recesses 112 are formed, and a sealing layer 115 that seals the recesses 112 by being disposed on the opening side of the recesses 112. The sealed recess 112 is filled with the partition wall liquid 113 in which the chargeable particles 114 are dispersed.

In the electronic paper configured as described above, a voltage is applied to the transparent electrode 122 by the voltage control unit 130, and a voltage having a different polarity from the display electrodes 121a to 121h is displayed in a pattern corresponding to information to be displayed. When selectively applied, a potential difference is generated between the front and back of the display unit 110, and due to this potential difference, the chargeable particles 114 move with Coulomb force in the liquid 113 in the partition wall, and any one of the display electrodes 121 a to 121 h and the transparent electrode 122. Adhere to either side. The partition wall liquid 113 is colored with a dye or pigment, and the charged particles 114 contain a light scattering component having a high refractive index, so that the region where the charged particles 114 are attached to the display electrode 110 side is colored. In addition, the area where the charged particles 114 are attached to the transparent electrodes 121a to 121h side is white, and when the desired information is expressed by the colored area and the white area when viewed from the transparent electrode 122 side, The expressed information becomes visible. The display information is retained even in a state where no voltage is applied to the transparent electrode 122 and the display electrodes 121a to 121h.
Japanese Patent No. 3680996

  However, in the display unit that displays information by the potential difference generated on the front and back, like the electronic paper described above, in the voltage control unit, in order to selectively apply a voltage in a pattern according to the information desired to be displayed on the display electrode, For this purpose, it is necessary to provide display electrodes, and there is a problem that the processing becomes complicated.

  The present invention has been made in view of the problems of the conventional techniques as described above. When information is displayed on a display unit due to a potential difference generated on the front and back sides, the configuration for that is complicated or processing is performed. It is an object of the present invention to provide a display control device that can display desired information on a display unit without being complicated.

In order to achieve the above object, the present invention provides:
A display control device for controlling the display of a thin plate-like display unit that has electrodes on one side and displays information by a potential difference generated on the front and back sides,
A clamping part that detachably holds the display unit from the front and back;
A first electrode portion that comes into contact with the electrode of the display unit sandwiched between the sandwiching portions;
A pattern corresponding to the information displayed on the display unit is formed of a conductive material, and the pattern is separated from the holding unit so that the pattern comes into contact with the surface of the display unit opposite to the electrode held by the holding unit. A conductive unit arranged in a possible manner;
A second electrode portion for applying a voltage to the conductive unit disposed in the clamping portion;
Voltage control means for applying different voltages to the first electrode portion and the second electrode portion;

  In the present invention configured as described above, in a state where the conductive unit in which the pattern corresponding to the information displayed on the display unit is formed of the conductive material is disposed in the sandwiched portion, the display unit is placed on the sandwiched portion from the front and back sides. When sandwiched, the electrode provided on one surface of the display unit sandwiched by the sandwiching portion comes into contact with the first electrode portion, and the other surface of the display unit sandwiched by the sandwiching portion is electrically connected to the conductive unit. Abuts on the pattern formed by the material. In this state, when different voltages are applied to the first electrode portion and the second electrode portion in the voltage control means, the first electrode is placed on one surface of the display unit sandwiched between the sandwiching portions. A voltage is applied to the electrode of the display unit via the part, and a voltage is applied to the other surface of the display unit sandwiched by the sandwiching part via a pattern formed on the second electrode part and the conductive unit. Is done. Since the voltages applied to the front and back surfaces of these display units are different from each other, in the display unit, a potential difference is generated only in a region in contact with the pattern formed in the conductive unit, and the potential difference is formed in the conductive unit. Information corresponding to the pattern is displayed.

  As described above, the information displayed on the display unit is in accordance with the pattern formed on the conductive unit arranged in the sandwiching portion, so that the voltage is selectively applied to the electrodes according to the information displayed on the display unit. Need not be applied.

  Further, the first electrode portion and the second electrode are provided only when the sandwiching portion has a shape that can be freely opened and closed, sandwiches the display unit in the closed state, and the voltage control means is in the closed state. By applying a voltage to the part, safety is ensured even when the voltage applied to the first electrode part and the second electrode part is high.

  As described above, in the present invention, the holding unit that detachably holds the display unit having the electrode on one surface from the front and back sides, and the first electrode unit that contacts the electrode of the display unit held by the holding unit. And a pattern corresponding to the information displayed on the display unit is formed of a conductive material, and the pattern can be detached from the holding unit so that the pattern abuts on the surface opposite to the electrode of the display unit held in the holding unit. Voltage control for applying different voltages to the conductive unit arranged, the second electrode part for applying a voltage to the conductive unit arranged in the clamping part, and the first electrode part and the second electrode part Therefore, the information displayed on the display unit is in accordance with the pattern formed on the conductive unit arranged in the sandwiching portion, and is thereby displayed on the display unit. Selectively without the need to apply a voltage to the electrodes in accordance with the information, without or complicated the complex or process configuration can be displayed on the display unit of the desired information.

  Further, the first electrode portion and the second electrode are provided only when the holding portion has a shape that can be freely opened and closed, holds the display unit in the closed state, and the voltage control means is in the closed state. In the configuration in which a voltage is applied to the first and second electrodes, safety can be ensured even when the voltage applied to the first electrode portion and the second electrode portion is high.

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

  First, a display unit whose display is controlled by the display control apparatus of the present invention will be described.

  FIG. 1 is a cross-sectional view showing an example of a display unit whose display is controlled by the display control apparatus of the present invention.

  An example of the display unit whose display is controlled by the display control apparatus of the present invention is an electronic paper 10 as shown in FIG. As shown in FIG. 1, the electronic paper 10 includes a transparent thin plate-like substrate 11 having a plurality of recesses 12 formed therein, and a sealing layer that seals the recesses 12 by being disposed on the opening side of the recesses 12. 15 and a transparent electrode 16 laminated on the entire surface of the substrate 11 opposite to the sealing layer 15, and in the recess 12 sealed by the sealing layer 15, the inside of the partition wall in which the charged particles 14 are dispersed. Liquid 13 is filled.

  In the electronic paper 10 configured as described above, when different voltages are applied to the electrode and the transparent electrode 16 by, for example, disposing an electrode on the surface on which the sealing layer 15 is disposed, there is a potential difference between the front and back surfaces. Due to this potential difference, the chargeable particles 14 move by the Coulomb force in the partition wall liquid 13 and adhere to either the front or back. For example, when the liquid 13 in the partition wall is colored with a dye or a pigment and the chargeable particles 14 include a light scattering component having a high refractive index, the chargeable particles 14 adhere to the sealing layer 15 side. The colored area is colored, and the area where the charged particles 14 are attached to the transparent electrode 16 side is white, and the desired information is expressed by the colored area and the white area. When viewed from, the expressed information becomes visible. And even in the state where the voltage is no longer applied to the front and back, the display information is held.

  2A and 2B are diagrams showing an embodiment of the display control apparatus of the present invention, in which FIG. 2A is a diagram showing a configuration of a main body, FIG. 2B is a plan view showing a configuration of a conductive panel, and FIG. It is AA 'sectional drawing shown to (b).

  As shown in FIG. 2, this embodiment includes a main body 20 and a conductive panel 30 that is a conductive unit attached to the main body 20.

  As shown in FIG. 2A, the main body 20 is configured by connecting two flat plate portions 27 and 28 so as to be rotatable about a shaft portion 29, and is opposite to the shaft portion 29 of the flat plate portions 27 and 28. The vicinity of the end is a holding part 23 for holding the electronic paper 10 shown in FIG. In the sandwiching portion 23, the flat plate portion 28 has an electrode 21, which is a first electrode portion that contacts the transparent electrode 16 of the electronic paper 10, when the electronic paper 10 is sandwiched by the sandwiching portion 23. The flat electrode 22 that is the second electrode portion is exposed and arranged on the surface facing the flat plate portion 28 on the flat plate portion 27. In addition, a voltage control unit 25 that applies voltages of different polarities to the electrode 21 and the planar electrode 22 is incorporated. The voltage control unit 25 may be provided outside as long as it is connected to the electrode 21 and the planar electrode 22 by wiring or the like. Further, a unit mounting portion 24 in which the conductive panel 30 shown in FIG. 2B is disposed and mounted so as to cover the planar electrode 22 is provided in the region to be the sandwiching portion 23 of the flat plate portion 27.

  The conductive panel 30 is made of a conductive material, and as shown in FIGS. 2B and 2C, the information displayed on the electronic paper 10 is cut out, so that a hollow portion 32 is provided in the conductive portion 31. Thus, the conductive portion 31 has a pattern shape corresponding to information displayed on the electronic paper 10.

  Hereinafter, a method of controlling the display of the electronic paper 10 shown in FIG. 1 by the display control apparatus configured as described above will be described.

  FIG. 3 is a diagram for explaining a method for controlling the display of the electronic paper 10 shown in FIG. 1 by the display control apparatus shown in FIG.

  First, as shown in FIG. 3A, the conductive panel 30 is mounted on the unit mounting portion 24 in a state where the clamping portion 23 is opened by the separation of the two flat plate portions 27 and 28. When the conductive panel 30 is mounted on the unit mounting portion 24, the flat electrode 22 provided on the flat plate portion 27 and the conductive panel 30 come into contact with each other.

  Here, inside the main body portion 20, two contact points 26 a that come into contact with each other only when the two flat plates 27 and 28 are rotated around the shaft portion 29 in the direction in which they approach each other and the clamping portion 23 is closed. 26 b is provided, one contact 26 a is connected to the planar electrode 22, and the other contact 26 b is connected to the plus terminal of the voltage controller 25. For this reason, in a state where the holding portion 23 is opened by the separation of the two flat plate portions 27 and 28, the two contact points 26a and 26b are not in contact with each other, and as shown in FIG. No voltage is applied to. Since the electrode 21 is directly connected to the GND terminal of the voltage control unit 25, it is always at the GND potential. In this way, in the state where the clamping portion 23 is opened by the separation of the two flat plate portions 27 and 28, no voltage is applied to the planar electrode 22, and thus a flat surface is used to control the display of the electronic paper 10. Safety is ensured even when the voltage applied to the electrode 22 is high.

  Next, as shown in FIG. 3C, the two flat plates 27 and 28 are rotated around the shaft portion 29 in a direction in which the two flat plate portions 27 and 28 approach each other, and the electronic paper 10 is held between the holding portions 23 to hold the holding portion 23. close up. Then, the transparent electrode 16 of the electronic paper 10 sandwiched between the sandwiching portions 23 comes into contact with the electrode 21, and the surface opposite to the transparent electrode 16 of the electronic paper 10 sandwiched between the sandwiching portions 23 is the conductive panel 30. It contacts the conductive portion 31 which is a pattern formed of a conductive material. Further, when the sandwiching portion 23 is closed, the two contact points 26a and 26b come into contact with each other, whereby a positive voltage is applied from the voltage control unit 25 to the planar electrode 22, as shown in FIG. That is, only when the clamping unit 23 is closed, the voltage is applied by the voltage control unit 25 to both the electrode 21 and the planar electrode 22.

  4 is a diagram illustrating a state in which the display of the electronic paper 10 illustrated in FIG. 1 is controlled by the display control device illustrated in FIG. 2, and FIG. 4A is a cross-sectional view illustrating an initial state of the electronic paper 10. FIG. 4B is a cross-sectional view illustrating a state of the electronic paper 10 whose display is controlled, and FIG. 8C is a plan view illustrating a state of the electronic paper 10 whose display is controlled.

  In the initial state of the electronic paper 10 shown in FIG. 1, as shown in FIG. 4A, the chargeable particles 14 are attached to the transparent electrode 16 side. Therefore, when viewed from the transparent electrode 16 side, the whole appears white.

  The electronic paper 10 is sandwiched by the sandwiching portion 23 so that the transparent electrode 16 is on the electrode 21 side, and as described above, a positive voltage is applied to the planar electrode 22 by the voltage control portion 25 and the electrode 21 is at the GND potential. Then, since the transparent electrode 16 of the electronic paper 10 is in contact with the electrode 21 and the conductive panel 30 is in contact with the flat electrode 22, only in the region in contact with the conductive portion 31 of the conductive panel 30 A potential difference occurs between the front and back surfaces, the liquid 13 in the partition wall is made of a dielectric material, and the chargeable particles 14 are charged to a negative potential. Therefore, as shown in FIG. In the contact area, the chargeable particles 14 move by the Coulomb force in the partition wall liquid 13 and adhere to the sealing layer 15 side. Further, in the region of the conductive panel 30 that does not come into contact with the conductive portion 31, there is no potential difference between the front and back surfaces, and thus the chargeable particles 14 remain attached to the transparent electrode 16 side. The partition wall liquid 13 is colored with a dye or pigment, and the charged particles 14 contain a light scattering component having a high refractive index, so that the region where the charged particles 14 adhere to the sealing layer 15 side is colored. In addition, the area where the chargeable particles 14 adhere to the transparent electrode 16 side becomes white, and as a result, as shown in FIG. 4C, desired information is expressed by the colored area and the white area. When viewed from the transparent electrode 16 side, the expressed information becomes visible. That is, information corresponding to the pattern shape by the conductive portion 31 and the hollow portion 32 of the conductive panel 30 can be seen.

  Then, even after the electronic paper 10 is detached from the clamping unit 23, the display information is held.

  As described above, in the present embodiment, the electronic paper 10 itself on which information is displayed is not provided with electrodes to which a voltage is selectively applied according to the displayed pattern, and the electronic paper 10 In order to display information, the conductive panel 30 formed with a pattern corresponding to the information need only be mounted on the main body 20 having the electrode 21 and the planar electrode 22, thereby being displayed on the electronic paper 10. There is no need to perform a process such as selectively applying a voltage to the electrode according to the information to be transmitted.

  FIG. 5 is a diagram illustrating a usage example of the electronic paper 10 whose display is controlled by the display control device illustrated in FIG. 2.

  The electronic paper 10 whose display is controlled by the display control device shown in FIG. 2 may be mounted on one end of a binding band 41 and used as a named band 40, for example, as shown in FIG.

  The named band 40 configured as described above is attached to, for example, a device or the like for displaying an administrator. Even if the device cannot be taken out for security reasons or is too heavy to be taken out, the display control device shown in FIG. 2 can be used to display the manager when the manager changes. It can be easily changed.

  In the electronic paper 10 used in this embodiment, the transparent electrode 16 is laminated on the entire surface of the base 11 opposite to the sealing layer 15. By patterning the shape of the transparent electrode 16, the pattern is obtained. The information corresponding to the combination of the shape of the transparent electrode 16 and the shape of the conductive portion 31 of the conductive panel 30 is displayed on the electronic paper 10, and the function of preventing forgery of the electronic paper 10 on which the information is displayed is provided. Can fulfill.

  In addition, the conductive panel 30 in which the pattern corresponding to the information displayed on the electronic paper 10 is formed of the conductive material is not limited to the one in which the hollow portion 32 is formed in the conductive portion 31 as described above. A conductive material is applied on the surface, and a part of the conductive material is exposed on the opposite surface of the film sheet, or a pattern corresponding to information displayed on the electronic paper 10 on the surface of the plate-like conductive material. Can be used as appropriate.

  In addition, the voltage control unit 25 applies electrodes having different polarities to the electrode 21 and the planar electrode 22, but the electronic paper 10 displays information by causing a potential difference between the front and back, If voltages having different potentials are applied to the electrode 21 and the planar electrode 22, the polarities do not need to be different from each other.

  In addition, as described above, the electronic paper 10 whose display is controlled by the display control device of the present invention is such that the charged particles 14 dispersed in the partition wall liquid 13 are moved by the potential difference generated on the front and back and the display is switched vertically. Cholesteric liquid crystal system that displays using two different molecular orientations by phase transition between electrodes arranged on the front and back sides, and organic dye reversibly oxidized / reduced. Any display can be applied as long as the display is switched by applying a voltage, such as an electrochromic method in which color is developed by setting the state, and the display is maintained even after the voltage is no longer applied.

It is sectional drawing which shows an example of the display unit by which a display is controlled by the display control apparatus of this invention. It is a figure which shows one Embodiment of the display control apparatus of this invention, (a) is a figure which shows the structure of a main-body part, (b) is a top view which shows the structure of an electroconductive panel, (c) is (b). It is AA 'sectional drawing shown. It is a figure for demonstrating the method of controlling the display of the electronic paper shown in FIG. 1 with the display control apparatus shown in FIG. FIG. 3 is a diagram illustrating a state in which the display of the electronic paper illustrated in FIG. 1 is controlled by the display control device illustrated in FIG. 2, (a) is a cross-sectional view illustrating an initial state of the electronic paper, and (b) is a display controlled. Sectional drawing which shows the state of the used electronic paper, (c) is a top view which shows the state of the electronic paper by which the display was controlled. It is a figure which shows the usage example of the electronic paper by which the display was controlled by the display control apparatus shown in FIG. It is sectional drawing which shows an example of the structure of common electronic paper.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Electronic paper 11 Base material 12 Concave part 13 Liquid in partition 14 Chargeable particle 15 Sealing layer 16 Transparent electrode 20 Main body part 21 Electrode 22 Planar electrode 23 Clamping part 24 Unit mounting part 25 Voltage control part 26a, 26b Contact 27, 28 Flat part 29 Shaft part 30 Conductive panel 31 Conductor part 32 Hollow part 40 Named band 41 Binding band

Claims (2)

A display control device for controlling the display of a thin plate-like display unit that has electrodes on one side and displays information by a potential difference generated on the front and back sides,
A clamping part that detachably holds the display unit from the front and back;
A first electrode portion that comes into contact with the electrode of the display unit sandwiched between the sandwiching portions;
A pattern corresponding to the information displayed on the display unit is formed of a conductive material, and the pattern is separated from the holding unit so that the pattern comes into contact with the surface of the display unit opposite to the electrode held by the holding unit. A conductive unit arranged in a possible manner;
A second electrode portion for applying a voltage to the conductive unit disposed in the clamping portion;
A display control apparatus comprising voltage control means for applying different voltages to the first electrode portion and the second electrode portion. The display control device according to claim 1,
The holding part has a shape that can be freely opened and closed, and holds the display unit in a closed state.
The voltage control means is a display control device that applies a voltage to the first electrode portion and the second electrode portion only when the clamping portion is in a closed state.

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