JP5145122B2 - 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, as in the electronic paper described above, in a display unit that displays information based on the potential difference generated on the front and back sides, electrodes for generating a potential difference are provided on the front and back sides. However, there is a problem that the manufacturing cost is high.

  Therefore, it is conceivable to make the display unit detachable, but even in that case, the voltage control unit selectively applies a voltage in a pattern according to the information desired to be displayed on the display electrode. There is a problem that it 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 that controls display of a thin plate-like display unit that displays information by a potential difference generated between the front and back,
A clamping part that detachably holds the display unit from the front and back;
A pattern corresponding to information displayed on the display unit is formed of a conductive material, and two conductive units that are detachably disposed on the holding part,
Two electrode parts for applying a voltage to the two conductive units arranged in the sandwiching part,
Voltage control means for applying different voltages to the two electrode portions,
The two conductive units are respectively arranged so that the pattern comes into contact with the front and back of the display unit held by the holding unit.

  In the present invention configured as described above, the display unit is disposed in the sandwiching portion in a state where the two conductive units in which the pattern corresponding to the information displayed on the display unit is formed of the conductive material are disposed in the sandwiching portion. When sandwiched from the front and back, the front and back of the display unit sandwiched between the sandwiching portions abut against the pattern formed of the conductive material of the conductive unit. In this state, when different voltages are applied to the two electrode portions in the voltage control means, different voltages are applied to the display unit sandwiched between the sandwiching portions from the front and back via the pattern formed on the conductive unit. Applied. Therefore, in the display unit, a potential difference is generated only in a region that is in contact with the pattern formed in the conductive unit, and information according to the pattern formed in the conductive unit is displayed by this potential difference.

  In this way, the display unit itself for displaying information is not provided with electrodes, and the information displayed on the display unit corresponds to the pattern formed on the conductive unit arranged in the holding portion. Therefore, it is not necessary to selectively apply a voltage to the electrodes according to information displayed on the display unit.

  If the patterns formed on the two conductive units are different from each other, information corresponding to the combination of the patterns formed on the two conductive units is displayed on the display unit. A lot of information can be displayed by combining the units, and the information cannot be displayed by only one conductive unit, and can be applied to a system or the like that requires security.

  In addition, the sandwiching portion has a shape that can be opened and closed, sandwiches the display unit in the closed state, and the voltage control means applies a voltage to the two electrode portions only when the sandwiching portion is in the closed state. Thus, safety is ensured even when the voltage applied to the electrode portion is high.

  As described above, in the present invention, the holding unit that detachably holds the display unit from the front and back, and the pattern corresponding to the information displayed on the display unit are formed of the conductive material, and are arranged to be detachable from the holding unit. Two conductive units, two electrode units for applying voltages to the two conductive units arranged in the sandwiching unit, and voltage control means for applying different voltages to the two electrode units, respectively. Since the two conductive units are arranged so that the pattern abuts on the front and back of the display unit sandwiched between the sandwiching portions, the display unit itself that displays information is not provided with electrodes. In addition, the information displayed on the display unit is in accordance with the pattern formed on the two conductive units arranged in the sandwiching portion, thereby It is not necessary to selectively applying a voltage to the electrodes in accordance with information displayed on the display unit, without or complicated the complex or process configuration can be displayed on the display unit of the desired information.

  In the case where the patterns formed on the two conductive units are different from each other, information corresponding to the combination of the patterns formed on the two conductive units is displayed on the display unit. Thus, a large amount of information can be displayed by combining two conductive units, and the information cannot be displayed with only one conductive unit, and can be applied to a system or the like that requires security.

  The sandwiching portion has a shape that can be opened and closed, sandwiches the display unit in the closed state, and the voltage control means applies a voltage to the two electrode portions only when the sandwiching portion is in the closed state. In this case, safety can be ensured even when the voltage applied to the 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 the recess 12 sealed by the sealing layer 15 is filled with the partition wall liquid 13 in which the chargeable particles 14 are dispersed.

  In the electronic paper 10 configured as described above, when a voltage is applied, for example, by arranging electrodes on the front and back, a potential difference is generated on the front and back, and the charged particles 14 are generated in the liquid 13 in the partition wall due to the potential difference. It moves with Coulomb force and adheres 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 region where the charged particles 14 are attached to the opposite side becomes white, and desired information is expressed by the colored region and the white region. When viewed from the opposite side, 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 the main body, and FIG. 2B is attached to the unit mounting portion 24a shown in FIG. FIG. 6C is a cross-sectional view taken along line AA ′ shown in FIG. 5B, and FIG. 4D is a diagram showing the configuration of the conductive panel mounted on the unit mounting portion 24b shown in FIG. The top view to show, (e) is AA 'sectional drawing shown to (d).

  As shown in FIG. 2, this embodiment includes a main body portion 20 and two conductive panels 30 a and 30 b that are conductive units attached to the main body portion 20.

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

  2 (b) and 2 (c), the conductive panel 30a has a plurality of hole portions 32a in a pattern corresponding to information displayed on the electronic paper 10 shown in FIG. Thus, a conductive portion 31a having a pattern corresponding to information displayed on the electronic paper 10 is formed.

  As shown in FIGS. 2D and 2E, the conductive panel 30b is displayed on the frame 32b made of an insulating material and the conductive portion 31b made of a conductive material is displayed on the electronic paper 10 shown in FIG. It is fitted with a pattern according to the information.

  The pattern of the conductive part 31a of the conductive panel 30a and the pattern of the conductive part 31b of the conductive panel 30b are different from each other.

  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 panels 30a and 30b are mounted on the unit mounting portions 24a and 24b, respectively, in a state in which the sandwiching portion 23 is opened by the separation of the two flat plate portions 27a and 27b. When the conductive panels 30a and 30b are respectively mounted on the unit mounting portions 24a and 24b, the planar electrodes 21a and 21b provided on the flat plate portions 27a and 27b and the conductive panels 30a and 30b come into contact with each other.

  Here, inside the main body portion 20, two contact points 26 a, which are in contact with each other only when the two flat plate portions 27 a, 27 b are rotated around the shaft portion 29 in a direction approaching each other and the clamping portion 23 is closed. 26 b is provided, one contact 26 a is connected to the planar electrode 21 a, and the other contact 26 b is connected to the plus terminal of the voltage control unit 25. Therefore, in a state where the clamping portion 23 is opened by the separation of the two flat plate portions 27a and 27b, 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 planar electrode 21b is directly connected to the GND terminal of the voltage control unit 25, it is always at the GND potential. Thus, in the state where the clamping part 23 is opened by the separation of the two flat plate parts 27a and 27b, no voltage is applied to the planar electrode 21a. Even when the voltage applied to the electrode 21a is high, safety is ensured.

  Next, as shown in FIG. 3C, the two flat plate portions 27 a and 27 b are rotated around the shaft portion 29 in the direction in which the two flat plate portions 27 a and 27 b come closer to each other, and the electronic paper 10 is sandwiched between the sandwiching portions 23. close up. Then, one surface of the electronic paper 10 sandwiched between the sandwiching portions 23 comes into contact with the conductive portion 31a of the conductive panel 30a, and the other surface of the electronic paper 10 sandwiched between the sandwiching portions 23 is connected to the conductive panel 30b. It contacts the conductive portion 31b. Further, when the sandwiching portion 23 is closed, the two contact points 26a and 26b are brought into contact with each other, whereby a positive voltage is applied from the voltage control portion 25 to the planar electrode 21a as shown in FIG. 3 (d). That is, only when the clamping unit 23 is closed, the voltage is applied by the voltage control unit 25 to both the planar electrode 21a and the planar electrode 21b.

  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 side opposite to the sealing layer 15. Therefore, when viewed from the side opposite to the sealing layer 15, the whole looks white.

  The electronic paper 10 is sandwiched between the sandwiching portions 23 so that the sealing layer 15 is on the planar electrode 21a side. As described above, a positive voltage is applied to the planar electrode 21a by the voltage control unit 25 and the planar electrode 21b is When the GND potential is established, the conductive panels 30a and 30b are in contact with the planar electrodes 21a and 21b, respectively, so that they are in contact with the conductive part 31a of the conductive panel 30a and the conductive part 31b of the conductive panel 30b. Since only the region has a potential difference 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 region in contact with the portion 31a and in contact with the conductive portion 31b of the conductive panel 30b, the chargeable particles 14 are coulombic in the partition wall liquid 13. In moving, adhering to the sealing layer 15 side. Further, in a region that contacts only the conductive portion 31a of the conductive panel 30a, a region that contacts only the conductive portion 31b of the conductive panel 30b, or a region that does not contact any of the conductive portions 31a and 31b of the conductive panels 30a and 30b. Since there is no potential difference between the front and back surfaces, the chargeable particles 14 remain attached to the side opposite to the sealing layer 15. 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 charged particles 14 are attached to the opposite 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 side opposite to the sealing layer 15, the expressed information can be seen. That is, the information according to the combination of the pattern by the conductive part 31a of the conductive panel 30a and the pattern by the conductive part 31b of the conductive panel 30b 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 this embodiment, the electronic paper 10 itself on which information is displayed is not provided with electrodes, and when information is displayed on the electronic paper 10, a pattern corresponding to the information is formed. The conductive panels 30a and 30b thus formed are only required to be mounted on the main body 20 having the planar electrodes 21a and 21b, respectively, whereby a voltage is selectively applied to the electrodes according to information displayed on the electronic paper 10. It is not necessary to perform such processing.

  In this embodiment, in order to simplify the description, an example in which a pattern obtained by extracting a plurality of circles by the conductive portion 31b from the pattern by the elliptical conductive portion 31b is displayed on the electronic paper 10 will be described as an example. However, it is also conceivable to combine a conductive portion whose pattern is a person's name with a conductive portion that forms a tint block for ensuring security.

  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. Further, in this example, since the ground pattern 18 is displayed in the personal name 17 displayed on the electronic paper 10 by the pattern formed on one of the two conductive panels, this ground pattern 18 is used. Thus, it is proved that the information is displayed by a predetermined conductive panel, and can be used for a system or the like for ensuring security. In the conductive panels 30a and 30b, the information expressed thereby is not limited to the person name 17 or the tint block 18, and any conductive pattern may be used as long as the entire surface is a solid coating pattern. It may have.

  In addition, as described above, the conductive panels 30a and 30b in which the pattern corresponding to the information displayed on the electronic paper 10 is formed of the conductive material have a plurality of holes 32a formed in the plate made of the conductive material. The pattern according to the information displayed on the electronic paper 10 on the surface of the plate-like conductive material is not limited to the one in which the conductive portion 31b made of the conductive material is fitted in the frame portion 32b made of an insulating material. Can be used as appropriate.

  Further, the voltage control unit 25 applies electrodes having different polarities to the planar electrode 21a and the planar electrode 21b, but the electronic paper 10 displays information by causing a potential difference between the front and back sides. If voltages having different potentials are applied to the planar electrode 21a and the planar electrode 21b, the polarities need not 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 the structure of the electroconductive panel with which the unit mounting part shown to (a) is mounted | worn. (C) is a cross-sectional view taken along the line AA ′ shown in (b), (d) is a plan view showing the configuration of the conductive panel mounted on the unit mounting portion shown in (a), and (e) ) Is a cross-sectional view taken along line AA ′ shown in FIG. 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 20 Main body part 21a, 21b Planar electrode 23 Nipping part 24a, 24b Unit mounting part 25 Voltage control part 26a, 26b Contact point 27a, 27b Flat plate part 29 Shaft part 30a, 30b Conductive panel 31a, 31b Conductor part 32a Hole part 32b Frame part 40 Named band 41 Binding band

Claims (3)

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,
A clamping part that detachably holds the display unit from the front and back;
A pattern corresponding to information displayed on the display unit is formed of a conductive material, and two conductive units that are detachably disposed on the holding part,
Two electrode parts for applying a voltage to the two conductive units arranged in the sandwiching part,
Voltage control means for applying different voltages to the two electrode portions,
The display control device in which the two conductive units are respectively arranged so that the pattern comes into contact with the front and back of the display unit held by the holding unit. The display control device according to claim 1,
The two conductive units are display control devices having different patterns. The display control device according to claim 1 or 2,
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 two electrode portions only when the clamping portion is in a closed state.

Images