JP2009162877A - System for displaying handwritten information on large screen - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a system for displaying handwritten information on a large screen, which enlarges information handwritten by a lecturer on a writing information display panel to simultaneously show it to a large audience. <P>SOLUTION: The system for displaying handwritten information on a large screen includes the writing information display panel and a large screen display-only information display panel. The writing information display panel and the display-only information display panel are connected while associating display units of the writing information display panel with display units of the display-only information display panel. Information handwritten by a user on the writing information display panel is enlarged on the large screen display-only information display panel. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a large-screen display system for handwritten writing information in which a screen displayed on a writable information display panel with a position coordinate detection device is enlarged and displayed on another large screen.

  2. Description of the Related Art Conventionally, an image display system has been proposed that can display information displayed on a large screen at hand on another small screen connected by wireless, wired, or the like (see, for example, Patent Document 1). The above conventional image display system has a blackboard or whiteboard as a large screen, and this large screen is configured as a writing type display panel having display means and position coordinate detection means, and the same image as that displayed on the large screen is displayed. It is displayed on a separate small screen (plurality) using data transmission means such as a cable or wireless, and is used in a meeting or presentation with a relatively small number of people.

JP 2002-196739

  In the conventional image display system described above, even if it is a large screen, it is limited to a size that can be written by hand by the conference organizer or presenter. (Especially text images) can be seen directly recognizable, but images displayed on such a large screen (for lectures, school classes, university courses, etc. in front of dozens of listeners) Especially in the case of character images), there was a problem that all the listeners could not see directly recognizable.

  Also, even in lectures in front of dozens of listeners, the above problem can be solved by providing a small screen display to all the listeners, but from a large screen to all small screen displays. In order to send and display image information, it is necessary to install a large-scale cable wiring and a wireless transmission / reception system using a strong radio wave, and there are many restrictions and there is a problem that the cost of the equipment is high.

  An object of the present invention is to solve the above-mentioned problems, for example, handwritten writing information that can be enlarged and displayed so that a large number of listeners can view information written by a speaker on handwritten information display panel at hand. A large screen display system is to be provided.

  The large-screen display system for handwritten writing information of the present invention comprises a writing-type information display panel and a display-only information display panel for a large screen larger than this panel, and the display unit of the writing-type information display panel and the display-only information display panel In a state where the display units are associated with each other, the write-type information display panel and the display-only information display panel are connected, and the information handwritten on the write-type information display panel at hand by the user is displayed on the large screen. The display device is configured to be enlarged and displayed on the display panel.

  In addition, a preferred example of the large-screen display system for handwritten writing information according to the present invention is that the connection between the writing type information display panel and the display-only information display panel can be performed wirelessly using weak radio waves. The display area shape of the panel is the same as the display area shape of the display-only information display panel, and the horizontal / vertical aspect ratio of each display area is 2/1 to 3/1. The position coordinate detection means for detecting the position coordinates of the pen-type writing device on the panel is detected, the display unit of the writing-type information display panel and the display unit of the display-only information display panel facing the position To display the same information on both sides, the pen tip edge of the pen-type writer is rounded, and the display-only information display panel is connected to the electrodes of multiple small display panels. The write-type information display panel and the display-only information display panel form a cell separated from each other by a partition between two opposing substrates, at least one of which is transparent, It may have a structure in which a display medium composed of particles is enclosed.

  According to the present invention, a writable information display panel and a display dedicated information display panel having a larger screen than that panel are provided, and the display unit of the writable information display panel is associated with the display unit of the display dedicated information display panel. In such a state, the writable information display panel and the display-only information display panel are connected so that the information handwritten on the writable information display panel at hand can be enlarged and displayed on the large-screen display-only information display panel. By configuring, for example, it is possible to obtain a large-screen display system of handwritten writing information that can be enlarged and displayed so that a large number of listeners can view information written by handwriting on the writing type information display panel at hand by a speaker. it can.

  Specifically, information handwritten by lecturers at lectures, school classes, university lectures, etc. in front of dozens of attendees is displayed on a large screen that can be directly recognized by all listeners. become able to. In addition, the hand-written information display panel (small screen) is sized to be handwritten by speakers, and can be carried by hand. The large screen that the audience sees can be installed in a classroom or auditorium. In addition, the horizontal / vertical aspect ratio can be set to make it easy to see. Furthermore, installation of the cable wiring and wireless transmission / reception system only requires between one small screen (write-type information display panel) and one large screen (display-only information display panel). Since wireless communication using weak radio waves is required even when wireless is used for connection, a system suitable for lectures in front of several tens of attendees can be provided at low cost.

<About the entire system>
In the large-screen display system for handwritten writing information of the present invention, the information handwritten and written by the lecturer on the hand-written information display panel (small screen) is displayed (displayed) on the information display panel of the ultra-large screen. A large-screen display system that can be viewed by the audience. The display unit (pixel) of the hand-written information display panel (small screen) is associated with the display unit (pixel) of the display-only information display panel (large screen). The display area shape of the hand-written information display panel (small screen) is the same as the display area shape of the display-only information display panel (large screen). As a shape matched to an installation place such as a classroom or a lecture hall, the horizontal / vertical aspect ratio is preferably 2/1 to 3/1. The size of the hand-held information display panel (small screen) is preferably about 200 mm to 300 mm in length and about 400 mm to 1000 mm in width, but the size that the speaker can hold with one hand is about 150 mm in length and about 300 mm in width. Is preferred. The lecturer can hold the write-type information display panel in his hand and explain to the audience while walking in front of the large screen.

  FIG. 1 is a diagram for explaining an example of a large-screen display system for handwritten writing information according to the present invention. In the example shown in FIG. 1, the large-screen information system for handwritten writing information of the present invention includes a writing-type information display panel 1 and a display-only information display panel 2 having a larger screen than this panel 1 and a display data transmission means. 3 through the connection. For example, a lecturer can perform handwriting on the writing type information display panel 1 with the pen type writing device 4. As the display data transmission means 3, cable connection or wireless communication connection can be preferably used.

  In the example shown in FIG. 1, the function of the pen-type writing device 4 is set to “write”, and the speaker writes a character image on the writing-type information display panel 1. In this example, immediately after the character image written on the screen of the writable information display panel 1 is displayed, the same character image is enlarged and displayed large on the display-only information display panel 2. The enlargement ratio is determined by the ratio of the size of display units (one dot (pixel)) provided in both display panels 1 and 2.

  FIGS. 2A and 2B are diagrams showing an example of the display unit of each panel in the large-screen display system for handwritten writing information of the present invention. FIG. 2A shows the display on the writing information display panel 1. The pixel 5 as a unit is shown, and FIG. 2B shows the pixel 5 as a display unit in the display-only information display panel 2. The screen size of the writable information display panel 1 shown in FIG. 2A is 300 mm × 90 mm, and the screen size of the display-only information display panel 2 is 10 m × 3 m. In the example shown in FIGS. 2A and 2B, the number of pixels is made smaller than the actual number for easy understanding. In this example, display is performed by associating the pixels 5 of the write-type information display panel 1 with the pixels 5 of the display-only information display panel 2.

  FIG. 3 is a diagram for explaining another example of the large-screen display system for handwritten writing information according to the present invention. In the example shown in FIG. 3 as well, as in the example shown in FIG. It is configured by connecting the panel 2 via the display data transmission means 3. In the example shown in FIG. 3, the function of the pen-type writing device 4 is set to “eraser” and the displayed character image is erased. In this example, immediately after the contents displayed on the screen of the write-type information display panel 1 are erased, the contents displayed so far on the display-only information display panel 2 are lost.

  FIG. 4 is a diagram for explaining still another example of the large-screen display system for handwritten writing information according to the present invention. Also in the example shown in FIG. 4, as in the example shown in FIG. 1, the large-screen information system for handwritten writing information according to the present invention includes a writing-type information display panel 1 and a display-only information display for a large screen larger than the panel 1. It is configured by connecting the panel 2 via the display data transmission means 3. In the example shown in FIG. 4, an image erasing switch (not shown) provided in the writable information display panel 1 is operated to erase the displayed image. In this example, an image erasure switch (not shown) of the display-only information display panel 2 linked with the image erasure switch is operated, and the image displayed on the display-only information display panel 2 is also erased.

<Description of Information Display Panel Used in the System of the Present Invention>
Next, a basic configuration of an information display panel of a charged particle movement type which is an example of an information display panel used in the system of the present invention will be described. The information display panel described below can be suitably used for both the write-type information display panel 1 and the display-only information display panel 2 in the system of the present invention. In the information display panel used in the system of the present invention, an electric field is applied to a display medium configured as a particle group including a chargeable particle sealed between two opposing substrates. In accordance with the applied electric field direction, the display medium is attracted by an electric field force or a Coulomb force, and the display medium is moved by a change in the electric field direction, whereby information such as an image is displayed. Therefore, it is necessary to design the information display panel so that the display medium can move uniformly and maintain stability when rewriting the display repeatedly or when displaying the display information continuously. Here, as the force applied to the particles constituting the display medium, in addition to the force attracting each other by the Coulomb force between the particles, an electric mirror image force between the electrode and the substrate, an intermolecular force, a liquid cross-linking force, gravity and the like can be considered.

  An example of an information display panel using a particle group used in the system of the present invention as a display medium will be described with reference to FIGS. Here, an example is shown in which an image is displayed in a dot matrix by moving a display medium with an electric field formed between opposing electrodes, using a particle group including a chargeable particle as a display medium.

  In the example shown in FIG. 5, at least two types of display media (here, particles for white display media) that are configured as a particle group including particles having optical reflectivity and chargeability and have different optical reflectivity and charge characteristics from each other. A white display medium 13W made of a group of particles and a black display medium 13B made of a particle group of particles for a black display medium) between at least one of the transparent substrates 11 and 12, and each of the barrier ribs 14 formed. In the cell 17, it is perpendicular to the substrates 11 and 12 according to the electric field generated by applying a voltage between the electrode 15 (line electrode) provided on the substrate 11 and the electrode 16 (line electrode) provided on the substrate 12. Move to. Then, as shown in FIG. 5, the white display medium 13W is visually recognized by the observer and white dot display is performed, or conversely, the black display medium 13B is visually recognized by the observer and black dot display is performed. Here, the cell and the pixel (dot) constituting the counter counter electrode are associated with each other, but this position may not be associated.

  In the example shown in FIG. 6, at least two types of display media (here, for white display media) configured as a particle group including particles having optical reflectivity and chargeability and having different optical reflectivity and charging characteristics from each other. A white display medium 13W composed of a particle group of particles and a black display medium 13B composed of a particle group of particles for a black display medium) are enclosed between substrates 11 and 12 which are transparent at least one, and formed by partition walls 14 In each cell 17, according to the electric field generated by applying a voltage between the electrode 15 (individual electrode) provided on the substrate 11 and the electrode 16 (individual electrode) provided on the substrate 12, the substrates 11, 12, Move vertically. Then, as shown in FIG. 6, the white display medium 13W is visually recognized by the observer and white dot display is performed, or conversely, the black display medium 13B is visually recognized by the observer and black dot display is performed. Here, the cell and the pixel (dot) constituting the counter counter electrode are associated with each other, but this position may not be associated.

  In the example shown in FIGS. 5 and 6, the cell 17 is shown as a gas space. However, the cell 17 may be an insulating liquid space.

  In the example shown in FIG. 7 and FIG. 8, a white display medium 13W and a black display medium 13B configured as a particle group including chargeable particles having different charge polarities are enclosed in a microcapsule 19 together with an insulating liquid 18. The image is displayed in a dot matrix by moving the display medium with an electric field. The example shown in FIG. 7 corresponds to the example using the line electrode shown in FIG. 5, the example shown in FIG. 8 corresponds to the example using the individual electrode shown in FIG. 6, and both the examples shown in FIGS. The dot display operation of the image by the display medium is the same as the example shown in FIGS.

  Preferred examples of the above-described information display panel will be described together below.

  The display unit of the information display panel is configured by a dot matrix display method in which the display medium 13 is sealed in a space between two substrates 11 and 12, one of which is transparent. It is preferable that a partition wall 14 is provided in the inter-substrate space to partition the space into a plurality of small rooms (cells) 17 and the display medium 13 is arranged in the cells 17. Thereby, it is possible to prevent the charged charged particles (display medium) from being biased. In the case where the chargeable particles (display medium) are sealed in the microcapsule 19, the microcapsule has a function of a cell (small room), so that it is not necessary to provide a cell (small room).

  Information display panels include a method in which charged particles are driven in an electric field in a gas space (for example, an electronic powder fluid method) and a method in which charged particles are driven in an electric field in an insulating liquid (for example, an electrophoresis method or a microcapsule type electrophoresis). System), a rotating ball system that drives (rotates) spherical charged particles composed of portions with different charging polarity and color by half in a microcapsule together with an insulating liquid, a cholesteric liquid crystal driving system, an organic EL system, an inorganic EL system, an electro In addition to the chromic method, a conventional liquid crystal driving method can be applied. In particular, the charged particle driving method and the cholesteric liquid crystal driving method having display memory characteristics consume power when rewriting the display, but once displayed images are maintained as they are even if the power supply is stopped, thereby saving power. Therefore, it is preferable.

  The electrode 16 provided on the observation side substrate 12 is transparent, but the corresponding electrode 15 provided on the back side substrate 11 may not be transparent. Transparent conductive materials for transparent conductive members such as transparent electrodes include indium tin oxide (ITO), indium oxide, zinc-doped indium oxide (IZO), aluminum-doped zinc oxide (AZO), antimony tin oxide (ATO), conductive And transparent conductive metal oxides such as conductive tin oxide and conductive zinc oxide, polyaniline, polypyrrole, polythiophene and the like. Examples of the conductive material that does not need to be transparent include copper, aluminum, silver, nickel, gold, chromium, and metals such as alloys (for example, Nd—Cr) containing these as a main component. It can arrange | position to the back side board | substrate including what was mentioned as.

  As a method for forming a conductive member such as an electrode, a method of forming the above-described materials into a thin film by a sputtering method, a vacuum deposition method, a CVD (chemical vapor deposition) method, a coating method, or a metal foil (for example, a rolled copper foil) is used. A laminating method, a method in which a conductive agent is mixed with a solvent or a synthetic resin binder, and applied are used. The above-mentioned material that can be patterned and is electrically conductive can be preferably used. The thickness of the conductive member or electrode formed of a transparent conductive material may be 0.01 to 10 μm, preferably 0.05 to 5 μm, as long as conductivity can be secured and light transmittance is not hindered. Moreover, the thickness of the electrode formed of a metal material may be 0.01 to 10 μm, preferably 0.05 to 5 μm, as long as conductivity can be secured. If the thickness is less than 0.01 μm, the electric resistance increases, which causes an inconvenience of a voltage drop in the electrode wiring and an inconvenience of increased power consumption.

<Description of writable information display panel>
The writable information display panel used in the system of the present invention is equipped with position coordinate detection means, detects the position of the pen-type writable device, the display unit (pixel) of the writable information display panel corresponding to that position, and display-only The display unit (pixel) of the information display panel is driven, and the same image (information) is displayed on both. The position of the pen type writing device detected by the position coordinate detecting means of the writing type information display panel is directly transmitted to the drive unit side of the writing type information display panel in cooperation with the pen type writing device in the writing type information display panel. It is transmitted to the drive side of the display-only information display panel by cable wiring (wired) or transmission / reception (wireless). Information is written and displayed by a dedicated pen-type writer. It is preferable that the nib edge is rounded because it can move smoothly when the pen is moved while contacting the panel substrate.

  FIGS. 9A and 9B are diagrams for explaining an example of a writable information display panel in the large-screen display system for handwritten writing information according to the present invention. In the example shown in FIGS. 9A and 9B, an example in which the transparent position coordinate detecting means 21 is arranged on the transparent substrate 12 on the display surface side of the panel is shown. As the transparent position coordinate detection means 21, a touch panel made of a transparent resistance film can be suitably used. FIGS. 10A and 10B are diagrams for explaining other examples of the writable information display panel in the large-screen display system for handwritten writing information according to the present invention. In the example shown in FIGS. 10A and 10B, an example is shown in which the position coordinate detection means 21 that does not require transparency is arranged on the substrate 11 on the back side of the panel. Since the position coordinate detection means 21 does not need to be transparent, an electromagnetic transfer type touch panel can be preferably used.

  9A, 9B and 10A, 10B, in any case, the position coordinate detection means 21 indicates the position of the display panel touched by the pen-type writing device 4. The display medium is detected as the rewrite position, and an electric signal is applied to the display unit electrode (pixel electrode) at that position to drive the display medium (display changes). The upper diagram schematically shows how the display state changes in the display unit (dot) at the position touched by the pen-type writing device 4.

  As the position coordinate detection means 21, a touch panel system such as an electromagnetic transfer type touch panel, a resistive film type touch panel, an ultrasonic surface acoustic wave type touch panel, an analog capacitive coupling type touch panel, or the like is used.

  In the system of the present invention, the data detected by the position coordinate detection means 21 as the rewriting position of the position of the display panel touched with the pen-type writing device 4 is transmitted as the display-only information display panel-side corresponding position data, and is displayed only. An electric signal is applied to the display unit electrode (pixel electrode) at the position corresponding to the information display panel side to drive the display medium, and the display of the display-only information display panel is also rewritten.

<Description of display-only information display panel>
The display-only information display panel 2 (large screen) is configured by connecting and combining electrode portions of a plurality of small display panels. The small display panel size can be freely designed as a preferred size with excellent productivity. However, the number of pixels and the pixel arrangement of the display-only information display panel (large screen) to be completed by combining the pixel size and pixel arrangement of the write-type information display panel The pixel arrangement is the same.

  FIG. 11 is a diagram for explaining an example of a display-only information display panel in the large-screen display system for handwritten writing information according to the present invention. In the example shown in FIG. 11, in each of the four small display panels 31-1 to 31-4, each of the line electrodes 16 provided on the upper substrate 12 is made of a flexible conductive material 32-1 to 32-n. By electrically connecting in the row direction, and electrically connecting each of the line electrodes 15 provided on the lower substrate 11 in the column direction with flexible conductive materials 33-1 to 33-n. A large display-only information display panel 2 is configured. The number of pixels and the pixel arrangement of the display-only information display panel 2 are the same as those of the write-type information display panel 1. In FIG. 11, the dot matrix / passive drive method using pixels formed by crossing line electrodes facing each other is used. However, an active drive method may be used by arranging individual electrodes corresponding to pixels in a counter dot matrix.

  The large-screen display system for handwritten writing information according to the present invention displays information handwritten on the hand-written information display panel on another large screen (another information display panel) connected wirelessly or wiredly. Electronic information display system that can be used, and information that the speaker has handwritten on the hand-written information display panel can be viewed on the screen of the audience, or a large front screen (blackboard, whiteboard replacement) It can be applied to lecture systems that can be viewed in

It is a figure for demonstrating an example of the big screen display system of the handwritten writing information of this invention. (A), (b) is a figure which shows an example of the display unit of each panel in the large-screen display system of the handwritten writing information of this invention, respectively. It is a figure for demonstrating the other example of the big screen display system of the handwritten writing information of this invention. It is a figure for demonstrating the further another example of the big screen display system of the handwritten writing information of this invention. It is a figure for demonstrating an example of the information display panel used with the system of this invention. It is a figure for demonstrating the other example of the information display panel used with the system of this invention. It is a figure for demonstrating the further another example of the information display panel used with the system of this invention. It is a figure for demonstrating the further another example of the information display panel used with the system of this invention. (A), (b) is a figure for demonstrating an example of the writable information display panel in the large-screen display system of the handwritten writing information of this invention, respectively. (A), (b) is a figure for demonstrating the other example of the writable information display panel in the large-screen display system of the handwritten writing information of this invention, respectively. It is a figure for demonstrating an example of the display-only information display panel in the large screen display system of the handwritten writing information of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Writable information display panel 2 Display-only information display panel 3 Display data transmission means 4 Pen type writer 5 Pixel 11, 12 Substrate 13 Display medium (particle group)
13W White display medium 13B Black display medium 14 Bulkhead 15, 16 Electrode 17 Cell 18 Insulating liquid 19 Microcapsule 21 Position coordinate detection means 31-1 to 31-4 Small display panel 32-1 to 32-n Flexible conductive material 33 -1-33-n Flexible conductive material

Claims (7)

  A write-type information display panel and a display-only information display panel with a larger screen than this panel are provided, and the write-type information display panel and display-only information display panel display units are in correspondence with each other. The information display panel is connected to the display-only information display panel, and the information that the user has written by handwriting on the hand-written information display panel is enlarged and displayed on the large-screen display-only information display panel. Large screen display system for handwritten writing information.   2. The large-screen display system for handwritten writing information according to claim 1, wherein the writing-type information display panel and the display-only information display panel can be connected by radio using weak radio waves.   The display area shape of the writable information display panel is the same as the display area shape of the display-only information display panel, and the horizontal / vertical aspect ratio of each display area is 2/1 to 3/1. A large-screen display system for handwritten writing information according to 1 or 2.   The writable information display panel has position coordinate detecting means for detecting position coordinates on the panel, detects the position of the pen-type writer on the panel, and the display unit of the writable information display panel that faces the position 4. The large-screen display system for handwritten writing information according to claim 1, wherein the display unit of the display-only information display panel is driven to display the same information on both.   5. The large-screen display system for handwritten writing information according to claim 4, wherein the pen tip edge of the pen type writing device has a rounded shape.   The large-screen display system for handwritten writing information according to any one of claims 1 to 5, wherein the display-only information display panel is formed by connecting and combining electrodes of a plurality of small display panels.   A writable information display panel and a display-only information display panel are formed by forming a cell separated from each other by a partition between two opposing substrates, at least one of which is transparent, and comprising a particle group in the cell. The large-screen display system for handwritten writing information according to any one of claims 1 to 6, characterized by having a structure for enclosing.

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