JP4971044B2 - Double-side display type information display device - Google Patents

Description

  The present invention relates to a double-sided display type information display device using an information display panel capable of double-sided display.

  Conventionally, as an example of an information display device using an information display panel, an information display device using a liquid crystal as a display medium (liquid crystal system: see, for example, Patent Document 1), or an information display device using charged particles as a display medium ( Electrophoresis and electropowder fluid systems are known. Among them, as an example using an electronic powder fluid type information display device, the applicant of the present application discloses an electronic book display device (for example, see Patent Document 2) and an electronic shelf label (for example, see Patent Document 3).

JP-A-9-265470 JP 2006-58578 A JP 2005-301030 A

  In any of the examples using the conventional information display panel described above, when other information is displayed instead of the information displayed on the screen, the other information is displayed using the same display surface. That is, after deleting the displayed information, another information to be displayed next is displayed (information is rewritten).

  For this reason, in the example using the above-described conventional information display panel, the user waits until the rewriting of the information displayed on the screen is completed. Therefore, there is a problem that the eyes of the user get tired. In addition, since the user continues to look at the screen during the rewriting operation of the displayed information, the time required for the rewriting may be felt long. For those who are used to reading paper-based books, it is speedy and rhythmic. There was also the inconvenience that it could not be used like reading.

  The object of the present invention is to solve the above-mentioned problems and to use one information display panel as the front and back surfaces of one sheet of paper, eliminating the operation of waiting until the rewritten information is displayed. Further, it is an object of the present invention to provide a double-sided display type information display device that can be read by turning the page forward and backward in the same manner as a conventional paper medium book.

  The double-sided display type information display device of the present invention is a double-sided display type information display device using an information display panel capable of double-sided display, wherein the information display panel capable of double-sided display is rotated around at least a part of its periphery. The information rewriting mode is either page feed rewriting mode or page at one edge of the information display panel parallel to the rotation axis. A rewrite mode determining means for determining whether the mode is the rewrite mode and a rewrite mode transmitting means for transmitting the determined rewrite mode information to the rewrite drive device as a rewrite signal are provided, and the information rewrite mode according to the rotation direction of the information display panel is provided. The next page information or the previous page information is displayed on one display surface of the information display panel by operating the rewrite drive device.

  As a preferred example of the double-sided display type information display device of the present invention, the rewrite mode determination means is provided on the frame so that the collapse switch is engaged by engaging the collapse switch at the start of rotation of the information display panel. The rewriting mode determining means comprises a rotation switch having a roller that rotates in contact with the frame at the start of rotation of the information display panel, and the rewriting mode transmitting means wirelessly transmits the rewriting mode information. The rewrite mode transmitting means transmits the rewrite mode information to the rewrite drive device by wire, and both display screens of the information display panel capable of double-sided display are provided. A display medium composed of more than one kind of particles and capable of electric field drive is enclosed between two transparent substrates, and an electric field is applied from a transparent counter electrode provided on the substrate. It is composed of one dot matrix display type display unit panel that rewrites information display such as images by moving, and both display screens of information display panel capable of double-sided display are composed of a substrate with transparent electrodes. Between two substrates formed by arranging a substrate that is not transparent and has electrodes provided on both sides that are not transparent and are paired with electrodes of the two transparent substrates, between two transparent substrates with electrodes. Dot matrix that rewrites information display such as images by enclosing a display medium consisting of at least one kind of particles in space and driving the electric field from a counter electrode provided on the substrate to move the display medium It is composed of one display unit display panel, and both display screens of an information display panel capable of double-sided display are provided with at least one type of particles and a display medium capable of electric field drive. A dot matrix display type display unit that rewrites information display such as images by moving the display medium by applying an electric field from a counter electrode provided on the substrate, sealed between two transparent and opaque substrates A combination of two panels, and a memory storage unit, a battery, a rewrite drive device, and a rewrite mode determination for capturing information to be displayed in a housing having a rotation shaft provided at least outside both display screens. And an information display panel capable of double-sided display for rewriting information to be displayed according to the rewrite mode information transmitted by the rewrite mode transmitting means.

  According to the double-sided display type information display device of the present invention, an information display panel capable of double-sided display is integrated with a casing having a rotation shaft at least at a part of its periphery, and the rotation shaft is rotatably mounted on the frame. The rewriting mode determining means for determining whether the information rewriting mode is the page feed rewriting mode or the page rewriting mode is provided on one edge of the information display panel parallel to the rotation axis, and the determined rewriting mode information. Rewriting mode transmitting means for transmitting a rewriting signal to the rewriting driving device is provided, and the rewriting driving device is operated in an information rewriting mode according to the rotation direction of the information display panel, whereby one display surface of the information display panel is Since page information or previous page information is displayed, one information display panel can be used like the front and back of a sheet of paper, and the rewritten information is displayed. It is possible to eliminate the operation to wait until, further, it is possible to provide a double-sided display type information display device can proceed to read the forward or backward flip through the pages in the same way as traditional paper media books.

<First embodiment>
FIGS. 1A and 1B are views for explaining a first embodiment of a double-sided display type information display device (electronic book) according to the present invention, and FIG. 1A shows a front view thereof. FIG. 1B is a cross-sectional view taken along the line AA in FIG. In the example shown in FIGS. 1A and 1B, a double-sided display type information display device (electronic book) 1 is provided with an information display panel housing 3 around one display unit panel capable of double-sided display. A rotating shaft 5 is provided so as to protrude outward from the center of each of the left and right sides of the information display panel housing 3 integrally with the configured information display panel 2 capable of double-sided display. A double-sided display type information display device (electronic book) of a front / rear rotation rewriting method is configured to be rotatably mounted.

  In the example shown in FIGS. 1A and 1B, whether the information rewriting mode is the page feed rewriting mode or the page at the upper edge of the information display panel housing 3 that is one edge parallel to the rotation shaft 5. A rewrite mode determining means 7 for determining whether the current mode is the rewrite mode and a rewrite mode transmitting means 8 for transmitting the determined rewrite mode information to the rewrite driving device 11 as a rewrite signal are mounted. In this embodiment, as shown in FIGS. 6A to 6F, the rewrite mode determination means 7 is operated by a rotary switch 13 having a roller 12 that rotates in contact with the frame 6 when the information display panel 2 starts rotating. It is composed. As the rewrite mode transmission means 8, a device that wirelessly transmits the rewrite mode information to the rewrite drive device 11 or a device that transmits the rewrite mode information to the rewrite drive device 11 by wire may be used.

  In the example shown in FIGS. 1A and 1B, both display screens of the information display panel 2 capable of double-sided display are sealed between two transparent substrates with an electric field driven display medium made of charged particles. In addition, the display unit panel is configured to rewrite information display such as an image by moving the display medium by applying an electric field from a transparent counter electrode provided on the substrate. Further, a memory storage unit 9 for fetching information to be displayed, a battery 10 and a rewrite drive device (display medium drive device) 11 are mounted on the edge of the information display panel housing 3 outside the both display screens. The rewrite mode information is transmitted from the rewrite mode transmission means 8 to the rewrite drive device 11 as a rewrite signal, and the rewrite drive device 11 is operated in the information rewrite mode according to the rotation direction of the information display panel 2. Next page information or previous page information is displayed (rewritten display) on one display screen of the information display panel 2 (in the case of FIGS. 1A and 1B, the back side of the paper). . The information displayed on the back screen is displayed so that it can be read when the information display panel is rotated and turned to the front side of the page.

FIGS. 6A to 6F are diagrams for explaining the display information rewriting operation in the double-sided display type information display apparatus according to the first embodiment of the present invention.
First, when the information display panel 2 is rotated forward about the rotation axis 5 (rotation such that the upper edge of the information display panel 2 is tilted back in FIG. 1A), the information display panel 2 shown in FIG. ), The roller 12 in contact with the frame 6 rotates clockwise. Next, as shown in FIG. 6B, when the roller 12 moves away from the frame 6 and the rotation of the roller 12 is stopped, it is determined that the rewriting mode is in the rotation direction of the roller 12, and the rewriting operation is started. The Next, when the information display panel 2 is further rotated forward with the rotation of the roller 12 as shown in FIG. 6C stopped, the edge of the information display panel 2 is moved while continuing the rewriting operation. As shown in FIG. 6D, the roller 12 starts to come into contact with the frame 6 on the opposite side. At this time, the rewriting operation is finished. Thereafter, as shown in FIG. 6 (e), the roller 12 is rotated by a slight amount due to the contact between the opposite frame body 6 and the roller 12, whereby the end of a series of rewriting operations is determined. Then, as shown in FIG. 6 (f), the roller 12 stops at the center of the opposite frame 6 and the “page turning operation” is completed.
When starting the next rewriting operation from the state of FIG. 6 (f), when the information display panel 2 is rotated forward as indicated by the arrow on the lower side in the figure, the “page feed operation” is started. When the information display panel 2 is rotated reversely as indicated by the upper arrow in the figure, the “page returning operation” is started.

<Second embodiment>
2 (a) and 2 (b) are diagrams for explaining a second embodiment of the double-sided display type information display device (electronic book) of the present invention, respectively, and FIG. 2 (a) shows a front view thereof. FIG. 2B is a cross-sectional view taken along the line AA in FIG. In the example shown in FIGS. 2A and 2B, the same members as those in the example shown in FIGS. 1A and 1B are denoted by the same reference numerals, and the description thereof is omitted. 2 (a) and 2 (b) is different from the example shown in FIGS. 1 (a) and 1 (b) in that both display screens of the information display panel 2 capable of double-sided display are made of charged particles. An electric field-driven display medium is sealed between two substrates, one transparent and the other opaque, and the display medium is moved by applying an electric field from a counter electrode provided on the substrate to display information such as an image. As shown in FIGS. 7A to 7F, the display unit panels 2-1 and 2-2 to be rewritten are configured by combining the back surfaces of the two sheets and the rewrite mode determination means 7 is collapsed as shown in FIGS. That is, the switch 14 and the engaging member 15 provided on the frame body 6 are configured to be engaged when the rotation of the information display panel 2 is started to cause the switch 14 to fall. The switch used in the fall-down switch system is set so that it automatically returns to its original position when the information display panel 2 leaves after it has fallen.

FIGS. 7A to 7F are diagrams for explaining the display information rewriting operation in the double-sided display type information display apparatus according to the second embodiment of the present invention.
First, when the information display panel 2 is rotated forward about the rotation axis 5 (rotation such that the upper edge of the information display panel 2 is tilted back in FIG. 2A), the information display panel 2 in FIG. ), The movement of the information display panel 2 starts from the state where the tip of the switch 14 is engaged with the groove portion of the engaging member 15 provided on the frame 6. Next, as shown in FIG. 7B, it is determined that the tip of the fall-down switch 14 has fallen by the engaging member 15 and is in the rewrite mode in the fall-down direction, and the rewrite operation is started. Next, as shown in FIG. 7C, when the collapse switch 14 is returned to its original position by the elastic force, if the information display panel 2 is further rotated forward, the information display is continued while the rewriting operation is continued. The edge of the panel 2 moves, and the tip of the collapse switch 14 stops at a predetermined position while contacting the engaging member 15 provided on the opposite frame 6 as shown in FIG. To do. At this time, the rewriting operation is finished. Thereafter, as shown in FIG. 7 (e), the tip of the fall switch 14 falls due to the engagement between the engagement member 15 provided on the opposite frame 6 and the tip of the fall switch 14. The end of the rewriting operation is determined. Then, as shown in FIG. 7 (f), the tip of the fall-down switch 14 stops at the groove portion of the engaging member 15 provided on the opposite frame 6, and the “page turning operation” is completed.
When starting the next rewriting operation from the state of FIG. 7 (f), when the information display panel 2 is rotated forward as indicated by the lower arrow in the figure, the “page feed operation” is started. When the information display panel 2 is rotated reversely as indicated by the upper arrow in the figure, the “page returning operation” is started.

<Third embodiment>
FIG. 3 is a front view for explaining a third embodiment of the double-sided display type information display apparatus (electronic book) of the present invention. In the example shown in FIG. 3, the same members as those in the examples shown in FIGS. 2A and 2B are denoted by the same reference numerals, and the description thereof is omitted. The example shown in FIG. 3 differs from the example shown in FIGS. 2A and 2B in that both sides are configured by providing an information display panel housing 3 around one display unit panel capable of double-sided display. Integrating with the displayable information display panel 2, a rotation shaft 5 is provided at the center of each of the upper and lower sides of the information display panel housing 3 so as to protrude outwardly, and the rotation shaft 5 can be freely rotated by the frame 6. It is mounted as a double-sided display type information display device (electronic book) of the left-right rotation rewriting method, and the right edge of the information display panel housing 3 which is one edge parallel to the rotation shaft 5 In other words, the rewrite mode determining means 7 including the fall switch 14 and the engaging member 15 and the rewrite mode transmitting means 8 are mounted.

  FIGS. 8A to 8C and FIGS. 9A to 9C are diagrams for explaining the display information rewriting operation in the double-side display type information display device according to the third embodiment of the present invention. In the example shown in FIGS. 8A to 8C, the page feed operation is described, and in the example shown in FIGS. 9A to 9C, the page return operation is described.

  In the page feed operation shown in FIGS. 8A to 8C, first, as shown in FIG. 8A, the first page information is displayed on the first display surface 2a of the information display panel 2. Thus, when page turning is performed to rotate the information display panel 2 counterclockwise, it is determined that the reversing switch 14 constituting the rewriting mode determining means 7 is in the rewriting mode and the rewriting operation is started. When the second display surface (back surface) 2b of the display panel 2 is rewritten to the second page by this rewriting operation, the state shown in FIG. Next, when the information display panel 2 is further rotated counterclockwise, the edge of the information display panel 2 moves while continuing the rewriting operation, and as shown in FIG. 8C, the tip of the collapse switch 14 is moved. Stops at a predetermined position while contacting the engaging member 15 provided on the opposite frame 6, and the engagement member 15 provided on the opposite frame 6 and the tip of the fall-down switch 14 When the tip of the fall switch 14 falls due to the engagement, the end of a series of rewriting operations is determined. In the process until the end of the rewriting operation is determined, the information on the second page is actually displayed on the second display surface (back surface) 2b of the display panel 2, and the page turning is finished. You can see (read) the second page right away.

  In the page return operation shown in FIGS. 9A to 9C, first, as shown in FIG. 9A, the information on the second page is displayed on the second display surface (back surface) 2b of the information display panel 2. When the page is returned by rotating the information display panel 2 to the right in this state, it is determined that the fall switch 14 constituting the rewrite mode determination means 7 is in the rewrite mode, and the rewrite operation is started. Is done. When the first display surface 2a of the display panel 2 is rewritten to the first page by this rewriting operation, the state shown in FIG. 9B is obtained. Next, when the information display panel 2 is further rotated to the right, the edge of the information display panel 2 moves while continuing the rewriting operation, and as shown in FIG. 9C, the tip of the collapse switch 14 is moved. Stops at a predetermined position while contacting the engaging member 15 provided on the opposite frame 6, and the engagement member 15 provided on the opposite frame 6 and the tip of the fall-down switch 14 When the tip of the fall switch 14 falls due to the engagement, the end of a series of rewriting operations is determined, and the information on the first page is displayed on the first display surface 2a of the display panel 2 so that the page of the paper is changed. Appears on the front side.

<Fourth embodiment>
FIG. 4 is a front view for explaining a fourth embodiment of the double-sided display type information display device (electronic book) of the present invention. In the example shown in FIG. 4, the same members as those in the example shown in FIG. In the example shown in FIG. 4, the difference from the example shown in FIG. 3 is that the rewrite mode determination means 7 mounted on the right edge of the information display panel housing 3, which is one edge parallel to the rotation shaft 5, is provided. The rotation switch 13 having the roller 12 is configured.

  The display information rewriting operation in the double-sided display type information display device of the fourth embodiment is the same as the page turning operation shown in FIGS. 8A to 8C and the page returning operation shown in FIGS. 9A to 9C. Therefore, explanation is omitted.

<Fifth embodiment>
5A to 5E are a front view, a bottom view, a right side view, a developed view, and an internal view for explaining a fifth embodiment of the double-side display type information display device (electronic book) of the present invention, respectively. It is sectional drawing. The example shown in FIGS. 5A to 5E includes a cover case (book cover) 16 for protecting the surface of the double-sided display type information display device (electronic book) 1 of the first to fourth embodiments. By setting the size of the double-sided display type information display device 1 to be A4 size or less, for example, the double-sided display type information display device (electronic book) 1 is excellent in portability.

  In the example shown in FIGS. 5A to 5E, the thickness of the double-sided display information display device 1 is made uniform by making the thickness of the frame 6 and the thickness of the edge of the information display panel housing 3 the same. The display surface of the display panel 2 is configured not to come out of the information display panel housing 3. Inside the book cover 16, as shown in FIGS. 5B and 5C, a buffer member 17 that prevents the double-side display type information display device (electronic book) 1 from rotating is provided on the double-side display type information display device 1. It is arranged so that The double-side display type information display device 1 is accommodated in the book cover 16 so that the edges of the frame body 6 and the information display panel housing 3 are in contact with the buffer member 17, and the first display surface 2 a of the information display panel 2. And the 2nd display surface 2b is protected in the space formed by the book cover 16 and the buffer member 17, as shown in FIG.5 (e).

  When using the double-sided display type information display device (electronic book) 1 of the fifth embodiment, by pulling out the double-sided display type information display device (electronic book) 1 housed in the book cover 16, As shown in FIG. 5D, information is displayed on the first display surface 2a of the information display panel 2 of the double-side display type information display device (electronic book) 1 and displayed on the first display surface 2a. Can read the information.

  According to the double-sided display type information display apparatus of the first to fifth embodiments of the present invention, the information display panel 2 capable of double-sided display is integrated with the casing 6 having the rotation shaft 5 at least in the periphery thereof. The rotation shaft 5 is rotatably mounted on the frame body 6 and the information rewriting mode is set to the page rewriting mode or the page rewriting mode at one edge of the information display panel 2 parallel to the rotating shaft 5. A rewrite mode determining means 7 for determining whether or not, and a rewrite mode transmitting means 8 for transmitting the determined rewrite mode information as a rewrite signal to the rewrite drive device, and rewriting in an information rewrite mode corresponding to the rotation direction of the information display panel. Since the next page information or the previous page information is displayed on one display surface of the information display panel 2 by operating the driving device 11, one information display panel is placed on the front and back surfaces of one sheet of paper. Can be used to rewrite the information that it is possible to eliminate the operation to wait until you see, further, it is possible to proceed to read the forward or backward flip through the pages in the same way as traditional paper media books. In addition, since the rewriting of information is completed in the middle of turning pages, there is no need to wait until the rewriting display is completed, and speedy and rhythmic reading can be performed.

<Information display panel used in the first to fifth embodiments>
In the first to fifth embodiments described above, the preferable configuration as both display screens of the information display panel 2 capable of double-sided display is as follows. First, display media that can be driven by an electric field are composed of a system in which charged particles are driven in a gas space, a system in which charged particles are driven in an insulating liquid (electrophoresis), or a portion in which the charging polarity and color differ by half. This is applicable not only to a method of driving (rotating) charged particles in a microcapsule together with an insulating liquid, but also to a display memory (bistable) such as a cholesteric liquid crystal method and an electrochromic method, as well as to a conventional liquid crystal method it can. Further, two (opposite) substrates are provided with a pair of electrodes made of a conductive material, and a display medium is driven by an electric field formed between the counter electrodes to rewrite information display such as an image. The counter electrode can be formed by crossing line electrodes so as to cross each other at right angles, or can be formed by facing individual electrodes. In either case, an information display panel of a dot matrix display system can be obtained. When driving a display medium enclosed between transparent counter electrodes provided between two transparent substrates, passive driving using a transparent line electrode that does not require the use of an opaque switch element such as a thin film transistor (TFT) is suitable. Used for. In the case of active driving using TFTs, it is sufficient to devise such a method that the TFT elements are made smaller or hidden in the partition walls.

  In a display panel in which a space for sealing a display medium is formed with a transparent substrate and a substrate that does not need to be transparent, a passive drive method using a counter electrode configured with a line electrode is also used as an active device using a counter electrode configured with an individual electrode. A driving method is also preferably used. By arranging the counter electrode in a dot matrix, a dot matrix type information display panel can be obtained. The two display portions of the information display panel capable of double-sided display are one information display panel capable of double-sided display of a dot matrix display system having a configuration in which a display medium is sealed in a space between two transparent substrates. Or two information display panels that can be displayed on one side of a dot matrix display system in which one of the substrates is transparent. A method using both display screens of one information display panel is preferable in that it can be a thin information display panel and can be produced at low cost. Both display screens of the information display panel capable of double-sided display are configured by two single-sided display type display panels, or in a space between two substrates formed by two transparent substrates and one opaque substrate. In the case where it is configured by a single display panel in which is encapsulated, active driving can be easily performed using TFTs. A display medium such as liquid crystal can be used for such a display panel. Furthermore, as a substrate, inorganic sheets such as glass and quartz, polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polyethylene (PE), polycarbonate (PC), polyimide (PI), polyethersulfone (PES) ), An organic polymer-based sheet such as acrylic can be applied, and a transparent substrate is used as the observation side surface. A non-transparent substrate can also be applied to a substrate that is not an observation surface.

  Next, as a specific example of the display unit panel used for both display screens of the information display panel 2, an example of a method of driving charged particles (display medium) in a gas space is shown in FIGS. This will be described with reference to FIGS. 12 (a) and 12 (b).

  In the example shown in FIGS. 10 (a), 10 (b) to 12 (a), 12 (b), the display medium 33 made of particles that can be driven by an electric field is sealed in the space between the two substrates 31 and 32. A dot-matrix display-type display panel is shown in which information display such as images can be rewritten by moving the display medium 33 by applying an electric field from electrodes 35 and 36 provided on the substrates 31 and 32, respectively. The space between the substrates 31 and 32 enclosing the display medium 3 is partitioned by a plurality of cells (small rooms) 37 by partition walls 34. Thereby, it is possible to prevent the enclosed display medium 33 from being biased. Note that in the case where the display medium 33 is sealed in a microcapsule, the microcapsule has a function of a cell (small room), and thus a cell (small room) may not be provided.

  In the example shown in FIGS. 10A and 10B, three cells 37 are set as a display unit (1 dot), and each cell 37 displays a combination of two colors of the white display medium 33W and the red display medium 33R. A medium, a display medium of a combination of two colors of a white display medium 33W and a green display medium 33G, and a display medium of a combination of two colors of a white display medium 33W and a blue display medium 33BL are enclosed to display color dots. . In the examples shown in FIGS. 10A and 10B, red dots are displayed to the observer. The difference between FIG. 10A and FIG. 10B is that in the example shown in FIG. 10A, the electrodes 35 and 36 are configured as line electrodes and passively driven, whereas FIG. In the example shown in (2), the electrodes 35 and 36 are configured as individual electrodes and are actively driven. In addition, since FIG. 10A is configured as a display unit panel capable of double-sided display, it can be observed not only from the right side of the page but also from the left side of the page. However, from the left side of the page, the negative image of the image displayed on the right side of the page is visible. Since FIG. 10B is configured as a display panel capable of single-sided display, the right side of the paper is not an observation surface. The combination of the two colors of the display medium is not limited to the above-described example. For example, the display medium may be enclosed in a combination of two colors of black red, two colors of black green, and two colors of black blue in each cell. Color dots can be displayed.

  In the example shown in FIGS. 11A and 11B, three cells 37 are set as a display unit (1 dot), and in the example shown in FIG. In the example shown in FIG. 4B, the three primary color filters 41R, 41G, and 41BL are arranged on the substrate on the display surface side, and color dots are displayed on the two display media of the white display medium 33W and the black display medium 33B. In FIGS. 11A and 11B, blue dots are displayed to the observer. The difference between FIG. 11A and FIG. 11B is that in the example shown in FIG. 11A, the electrodes 35 and 36 are configured as line electrodes and driven passively, whereas FIG. In the example shown in FIG. 11, the electrodes 35 and 36 are configured as individual electrodes and are actively driven, and in FIG. 11A, a color filter is provided on both substrates of the panel to perform color display on both sides. On the other hand, in FIG. 11B, a color filter is provided only on one substrate of the panel. In addition, since FIG. 11A is configured as a display panel capable of double-sided display, it can be observed not only from the right side of the page but also from the left side of the page. However, from the left side of the page, the negative image of the image displayed on the right side of the page is visible. Since FIG. 11B is configured as a display panel capable of single-sided display, the right side of the paper is not an observation surface. As another configuration, four cells 37 are used as a display unit (one dot), and a primary color filter and a colorless color filter are arranged in each cell 37, and color dots can be displayed on a monochrome two-color display medium. .

  In addition, when color display is performed using a color filter (FIG. 11 (a)), it is preferable to provide color filters on both the front and back sides. However, when it is desired to display in two colors instead of color display on either side. It is only necessary to provide a color filter on one side. By configuring in this way, as a display unit panel capable of double-sided display, one side is set to monochrome display suitable for displaying information such as high-definition characters, and the other side is used to display information such as figures. A panel having a suitable color display can be obtained. Of course, double-sided monochrome display can be used depending on the application.

  In the example shown in FIGS. 12A and 12B, three cells 37 are set as a display unit (1 dot), and each cell 37 has a combination of two colors, a white display medium 33W and a magenta display medium 33M. Color dots are displayed by enclosing a display medium, a display medium of a combination of two colors of a white display medium 33W and a cyan display medium 33C, and a display medium of a combination of two colors of a white display medium 33W and a yellow display medium 33Y. is doing. 12A and 12B, magenta dot display is performed for the observer. The difference between FIG. 12A and FIG. 12B is that in the example shown in FIG. 12A, the electrodes 35 and 36 are configured as line electrodes and passively driven, whereas FIG. In the example shown in (2), the electrodes 35 and 36 are configured as individual electrodes and are actively driven. In addition, since FIG. 12A is configured as a display unit panel capable of double-sided display, it can be observed not only from the right side of the page but also from the left side of the page. However, from the left side of the page, the negative image of the image displayed on the right side of the page is visible. Since FIG. 12B is configured as a display panel capable of single-sided display, the right side of the paper is not an observation surface.

  The double-sided display type information display device of the present invention includes an electronic book, an electronic manual (instruction manual), an electronic newspaper, an electronic POP (Point of Presence, Point of Purchase advertising), an electronic advertisement, an information board, an electronic price tag, and an electronic shelf label. It can be suitably used as an electronic musical score, etc. Furthermore, it can be used as a set with a cover case to protect the surface of the information display panel, and the information display panel size can be set to A4 size or smaller so that it is highly portable. The present invention can also be suitably applied to books, electronic manuals (handling instructors), electronic newspapers, electronic musical scores, and the like.

(A), (b) is a figure for demonstrating 1st Example of the double-sided display-type information display apparatus of this invention, respectively. (A), (b) is a figure for demonstrating 2nd Example of the double-sided display-type information display apparatus of this invention, respectively. It is a figure for demonstrating 3rd Example of the double-sided display-type information display apparatus of this invention. It is a figure for demonstrating the page feed operation | movement of the double-sided display-type information display apparatus concerning 4th Example of this invention. (A)-(e) is the front view, bottom view, right view, expanded view, and internal sectional view for demonstrating 5th Example of the double-sided display type information display apparatus of this invention, respectively. (A)-(f) is a figure for demonstrating the rewriting operation | movement of the display information in the double-sided display type information display apparatus of 1st Example of this invention, respectively. (A)-(f) is a figure for demonstrating the rewriting operation | movement of the display information in the double-sided display type information display apparatus of 2nd Example of this invention, respectively. (A)-(c) is a figure for demonstrating the rewriting operation | movement of the display information in the double-sided display-type information display apparatus of 3rd Example of this invention, respectively. (A)-(c) is a figure for demonstrating the rewriting operation | movement of the display information in the double-sided display-type information display apparatus of 3rd Example of this invention, respectively. (A), (b) is a figure for demonstrating one specific example of the display part panel used for this invention, respectively. (A), (b) is a figure for demonstrating the other specific example of the display part panel used for this invention, respectively. (A), (b) is a figure for demonstrating the further another example of the display part panel used for this invention, respectively.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Double-sided display type information display apparatus 2, 2-1, 2-2 Information display panel 2a 1st display surface 2b 2nd display surface 3 Information display panel housing | casing 5 Rotating shaft 6 Frame 7 Rewrite mode judgment means 8 Rewrite Mode transmission means 9 Memory storage unit 10 Battery 11 Rewrite drive device 12 Roller 13 Rotation switch 14 Inclination switch 15 Engaging member 31, 32 Transparent substrate 33 Display medium 33W White display medium 33B Black display medium 33R Red display medium 33G Green display medium 33BL Blue display medium 33M Magenta color display medium 33C Cyan color display medium 33Y Yellow color display medium 34 Bulkhead 35, 36 Transparent electrode 37 Cell 41R Red color filter 41G Green color filter 41BL Blue color filter

Claims (9)

A double-sided display type information display device using an information display panel capable of double-sided display,
An information display panel capable of double-sided display is integrated with a casing having a rotation shaft at least at a part of its periphery, and the rotation shaft is configured to be rotatably mounted on a frame body.
At one edge of the information display panel parallel to the rotation axis, rewrite mode determining means for determining whether the information rewrite mode is the page feed rewrite mode or the page reverse rewrite mode, and rewriting the determined rewrite mode information to the rewrite drive device. Rewriting mode transmitting means for transmitting as a signal,
The next page information or the previous page information is displayed on one display surface of the information display panel by operating the rewriting drive device in the information rewriting mode corresponding to the rotation direction of the information display panel. Double-side display type information display device.   2. The rewrite mode determining means comprises a collapse switch and an engagement member provided on the frame so as to be engaged when the rotation of the information display panel is started to cause the collapse switch to collapse. 2. A double-sided display type information display device.   2. The double-sided display type information display device according to claim 1, wherein the rewrite mode determining means comprises a rotation switch having a roller that rotates in contact with the frame when the information display panel starts rotating.   The double-sided display type information display device according to any one of claims 1 to 3, wherein the rewrite mode transmitting means wirelessly transmits the rewrite mode information to the rewrite drive device.   The double-sided display type information display device according to any one of claims 1 to 3, wherein the rewrite mode transmission means transmits the rewrite mode information to the rewrite drive device by wire.   Both display screens of the information display panel capable of double-sided display are encapsulated between two transparent substrates with a display medium consisting of at least one kind of particles and capable of electric field drive, and an electric field is applied from a transparent counter electrode provided on the substrate The double-sided display according to any one of claims 1 to 5, wherein the double-sided display comprises a single dot matrix display type display unit panel that rewrites information display such as an image by moving the display medium. Expression information display device.   Both display screens of the information display panel capable of double-sided display are configured with a substrate with a transparent electrode, and are not transparent between the two transparent substrates with an electrode and the electrodes of the two transparent substrates. An electric field-driven display medium made of at least one kind of particles is encapsulated in each of the two inter-substrate spaces formed by disposing a substrate on which both electrodes are provided, and a pair of electrodes provided on the substrate. 6. The display unit panel according to claim 1, wherein the display medium is moved by a display medium by applying an electric field from an electrode to rewrite information display such as an image. 2. A double-sided display type information display device.   Both display screens of an information display panel capable of double-sided display are provided on a substrate by enclosing a display medium composed of at least one kind of particles and capable of driving an electric field between two substrates, one transparent and the other opaque. 6. A combination of two dot matrix display type display panels that rewrite information display such as images by moving the display medium by applying an electric field from the counter electrode. The double-sided display type information display device according to any one of the above.   A housing having a rotating shaft provided at least on the outer sides of both display screens is equipped with a memory storage unit for taking in information to be displayed, a battery, a rewrite drive device, a rewrite mode judging means and a rewrite mode transmitting means, and a rewrite mode 9. The double-sided display system according to claim 1, wherein the double-sided display type information display panel comprises a double-sided display capable of rewriting information to be displayed in accordance with the rewriting mode information transmitted by the transmitting means. Information display device.

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