JP2007225757A - Information equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide information equipment capable of displaying information to be added with excellent follow-up characteristics without any halfway break even on a display unit which has scanning electrodes addressed one by one in sequence and is passively or actively driven. <P>SOLUTION: The information equipment 3 comprises the display unit 1 which has display memory capacity, also has the scanning electrodes addressed one by one in sequence and is passively or actively driven and a position detector 2 which detects the position of an input means 4, and updates display information of the display unit corresponding to input of the position detector. When the display information to be added is displayed on the display unit corresponding to the input of the position detector, only scanning electrodes corresponding to the position of the display information to be added on the display unit are scanned. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention is composed of a passive or active display that has display memory characteristics and is sequentially addressed for each scan electrode, and a position detector that detects the position of the input means, and corresponds to the input of the position detector. Thus, the present invention relates to an information device that updates display information on the display.

Conventionally, various electronic papers and the like are known as display devices having display memory properties. As an example, an electric field is applied to a display medium enclosed between a scanning electrode and a selection electrode provided so as to intersect each other on the substrate, in which a display medium is enclosed between two substrates, at least one of which is transparent. An information display panel that displays information such as an image by moving a display medium by providing the information is known (for example, see Non-Patent Document 1).
趙 Kuniaki and three others, “New Toner Display Device (I)”, July 21, 1999, Annual Meeting of the Imaging Society of Japan (83 times in total) “Japan Hardcopy'99” Proceedings, p.249-252

  2. Description of the Related Art In recent years, there is an increasing desire to add memo, underline, and handwritten information to a display device such as an electronic paper having a display memory property on an input device such as a pen or a finger. Therefore, it is considered to configure an information device that can add information on the display by the input means by combining a display having a display memory property and a position detector that detects the position of the input means.

  In the information equipment described above, if a passive or active-driven dot matrix display that is sequentially addressed for each scan electrode is used as a display having display memory properties, the following problems have occurred.

  For example, as shown in FIG. 8, an information device 53 is configured by overlapping a display 51 having a display memory property and a position detector 52, and information, here a cursor 55 is operated on the display 51 by an input pen 54. Think about what to do. Then, in the information device 53 having such a configuration, it is considered that handwriting input is performed with a pen 54 as shown in FIG. Specifically, as shown in FIG. 10, when a line is input from the lower left to the upper right, it takes time to scan (page rewrite) all the scanning electrodes (for example, 0.5 seconds / page). For this reason, as shown in FIG. 11, there is a problem that a significant inconvenience occurs such that lines are interrupted in the process of erasing and writing for each page. In the information device 53, as shown in FIG. 12, it is considered that the cursor 55 is moved by using the pen 54 as a substitute for a mouse. At this time, as shown in FIG. 13, if it is attempted to move the cursor 55 from the lower left to the upper right, it takes time to scan (rewrite the page) all the scan electrodes, and therefore, as shown in FIG. 14. In addition, the locus of movement of the cursor 55 cannot be sufficiently followed, and there is a problem that the operability is remarkably inferior.

  The object of the present invention is to solve the above-mentioned problems, and in a display that is passively or actively driven sequentially for each scan electrode, display information to be added is not cut off in the middle, and the followability is good. It is intended to provide an information device that can be displayed on the screen.

  The information device of the present invention is composed of a passive or active-driven display that has display memory properties and is sequentially addressed for each scan electrode, and a position detector that detects the position of the input means. In an information device that updates display information of a display unit in response to an input, when displaying display information to be added in response to an input by the position detector on the display unit, the display information to be added on the display unit The present invention is characterized in that only the scanning electrode corresponding to the position is scanned.

  As a preferred example of the information device of the present invention, when displaying display information to be updated in response to an input by a position detector, a plurality of scanning electrodes corresponding to positions on the display of display information to be erased are simultaneously selected. When displaying the display information to be added thereafter, the display device is configured to scan only the scanning electrode corresponding to the position of the display information to be added on the display, and at least one of the displays is transparent. The display medium is sealed between the two substrates, and an electric field is applied to the sealed display medium from the scanning electrode and the selection electrode provided so as to cross each other on the substrate. It may be an information display panel that moves and displays information such as images.

  According to the present invention, when displaying the display information to be added corresponding to the input by the position detector on the display, only the scanning electrode corresponding to the position on the display of the display information to be added is scanned. As a result, even in a passively or actively driven display that is sequentially addressed for each scan electrode, there is obtained an information device that can display the display information to be added without any interruption in the middle and can display the followability satisfactorily. be able to.

  FIG. 1 is a diagram showing a configuration of an example of an information device according to the present invention. In the example shown in FIG. 1, an information device 3 is configured by overlapping a display device 1 having a memory property and a position detector 2, and information, here a cursor 5 is operated on the display device 1 by an input pen 4. . The above configuration is the same as the conventional example shown in FIG.

  In the example shown in FIG. 1, as the display 1, a display having a memory property and driven by passive or active matrix for each scanning electrode is used. As an example, an information display panel using an electronic powder fluid will be described later. The position detector 2 detects the position of an input pen 4 or a finger as input means by pressure, electrostatic coupling, electromagnetic coupling, optical coupling, surface acoustic wave (including ultrasonic) coupling, or the like. use. In the example shown in FIG. 1, the display 1 and the position detector 2 are configured to overlap each other, but the physical positional relationship between the display 1 and the position detector 2 (overlap / not overlap, front / back, etc.) Any size is acceptable. Further, the resolution and resolution of the display 1 and the position detector 2 may be the same or different. If they are different, appropriate conversion means are provided.

  The information device 3 according to the present invention is characterized in that information is not written in the display 1 by scanning (page rewriting) all scanning electrodes as in the prior art, but only a part of the scanning electrodes is written. There is a point to carry out by performing writing, and further by performing partial writing and partial erasing to erase only a part. This feature can be implemented by detecting the position of the input means 4 with the position detector 2 and scanning or erasing only the scanning electrode corresponding to the position. The area of the scan electrode for partial writing can be appropriately selected according to the size of the additionally recorded information, and the minimum unit of writing for additional image writing is one scan electrode (one scan line). Hereinafter, an example of partial writing and an example of partial writing / partial erasing will be described in order.

<Example of partial writing>
As shown in FIG. 9, consider a case where a line is input from the lower left to the upper right of the screen of the display 1. Usually, in the case of handwritten input as in this example, the pen locus is often displayed. In that case, in general, it is often sufficient to perform writing (without erasure scanning), and partial writing is performed.

  FIG. 2 is a diagram for explaining an example of partial writing in the information device of the present invention. In the example shown in FIG. 2, when displaying the display information (here, a line) to be added corresponding to the input by the position detector 2, only the scanning electrode corresponding to the position on the display 1 of the information to be added is scanned. Then, information is written on the display 1. Specifically, as shown in FIG. 2, continuous lines are obtained by continuously and repeatedly scanning only the scanning electrodes in a certain region including the pen position.

<Example of partial write / erase>
Consider a case where the cursor is moved from the lower left to the upper right of the screen of the display 1 as shown in FIG. FIG. 3 and FIG. 4 are diagrams for explaining an example of partial writing / partial erasing in the information apparatus of the present invention. In the example shown in FIG. 3 and FIG. 4, when displaying the display information to be updated corresponding to the input by the position detector, a plurality of scan electrodes corresponding to the positions on the display of the display information to be erased are simultaneously selected. When performing the erasure scan and displaying the display information to be added thereafter, only the scanning electrode corresponding to the position on the display of the display information to be added is scanned.

  In the example shown in FIG. 3, the original cursor is erased, and then only the scan electrode corresponding to the position of the cursor detected by the position detector 2 is scanned, and a part of the movement of the cursor is lost by repeating this process. Can be done without. When halftone display is not performed (binary display) as in the example illustrated in FIG. 3, it is not necessary to delete the display of a new writing position in advance. In the example shown in FIG. 4, halftone display is performed, and a display in which the gradation to be newly displayed cannot be obtained only by the writing operation (lower density) is performed. It is necessary to erase the writing position in advance. In any of the examples, writing is performed by sequentially scanning the scanning electrodes in a predetermined region, but erasing can be performed simultaneously on all the scanning electrodes in the predetermined region. As shown in FIG. 5, it is also possible to perform partial writing with a color to be erased by an eraser pen as the input means 4 and perform partial erasing with good pen input tracking capability.

  In the example of partial writing / partial erasing shown in FIGS. 3 and 4, when scanning vertically with XGA (1024 × 768 dots), the number of scanning lines is 1024 lines. If the writing speed is 0.5 msec / line, it takes about 0.5 seconds to update the cursor display in the conventional page rewriting. When the cursor icon is 32 × 32 dots, according to the present invention, the cursor display update is only 16 msec. Therefore, the speed of the example of the present invention can be increased by about 32 times compared to the conventional example.

  Next, an information display panel suitably used as the display 1 used in the information device of the present invention will be described.

  First, the basic configuration of the information display panel of the present invention will be described. In the information display panel which is an object of the present invention, an electric field is applied to a display medium sealed between two opposing substrates. Along with the applied electric field direction, the charged display medium is attracted by the electric field force or Coulomb force, etc., and the display medium changes the moving direction by the electric field direction change due to the potential switching, thereby displaying information such as an image. Made. 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 that is an object of the present invention will be described with reference to FIGS. 6 (a) and 6 (b). In the example shown in FIGS. 6A and 6B, at least two types of display mediums 13 (here, white display medium particles 13Wa) having at least one type of particles and having different optical reflectance and charging characteristics. Between the electrode 15 provided on the substrate 11 and the electrode 16 provided on the substrate 12 is a voltage between the electrode 15 provided on the substrate 11 and the electrode 16 provided on the substrate 12. In accordance with the electric field generated by applying, the substrate is moved perpendicularly to the substrates 11 and 12, and the black display medium 13B is visually recognized by the observer to display black, or the white display medium 13W is provided to the observer. A white display is made by visual recognition. In the example shown in FIG. 6B, a cell is formed by providing partition walls 14 between the substrates 11 and 12 in a lattice shape, for example. Further, in FIG. 6B, the partition in front is omitted. Further, the electrode provided on the substrate may be outside the substrate or embedded in the substrate.

  The above description is similarly applied to the case where the white display medium 13W including the particle group is replaced with the white medium including the powder fluid and the black display medium 13B including the particle group is replaced with the black display medium including the powder fluid. I can do it. The powder fluid will be described later. The color of the display medium particles is not limited to white / black, and various color combinations are possible.

  Hereinafter, each member which comprises the information display panel of this invention is demonstrated.

  As for the substrate, at least one of the substrates is a transparent substrate 12 on which the color of the display medium can be confirmed from the outside of the information display panel, and a material having high visible light transmittance and good heat resistance is preferable. The substrate 11 may be transparent or opaque. Examples of substrate materials include polymer sheets such as polyethylene terephthalate, polyethylene naphthalate, polyethersulfone, polyethylene, polycarbonate, polyimide, and acrylic, flexible materials such as metal sheets, and glass and quartz. An inorganic sheet having no flexibility is mentioned. The thickness of the substrate is preferably from 2 to 5000 μm, more preferably from 5 to 2000 μm. If it is too thin, it will be difficult to maintain the strength and the spacing uniformity between the substrates, and if it is thicker than 5000 μm, it will be a thin information display panel. Is inconvenient. When the display 1 is configured to overlap the position detector 2, it is necessary to be transparent with the substrates 11 and 12.

  Electrode forming materials include metals such as aluminum, silver, nickel, copper, and gold, and conductive materials such as indium tin oxide (ITO), indium oxide, conductive tin oxide, antimony tin oxide (ATO), and conductive zinc oxide. Conductive polymers such as metal oxides, polyaniline, polypyrrole, and polythiophene are exemplified and appropriately selected and used. As a method for forming an electrode, a method of forming the above-described materials into a thin film by sputtering, vacuum deposition, CVD (chemical vapor deposition), coating, or the like, or mixing a conductive agent with a solvent or a synthetic resin binder. The method of apply | coating is used. The electrode provided on the display surface side substrate 12 that needs to be transparent on the viewing side needs to be transparent, but the electrode provided on the back side substrate 11 does not need to be transparent. In any case, the above-mentioned material that can be patterned and is electrically conductive can be suitably used. Note that the electrode thickness is not particularly limited as long as the conductivity can be secured and the light transmittance is not hindered, and is preferably 3 to 1000 nm, preferably 5 to 400 nm. The material and thickness of the electrode provided on the back side substrate 1 are the same as those of the electrode provided on the display surface side substrate described above, but need not be transparent. When the display 1 is configured to overlap the position detector 2, all the electrodes provided on the substrates 11 and 12 need to be transparent. In this case, the external voltage input may be superimposed with a direct current or an alternating current.

The shape of the partition wall 14 provided on the substrate as required is appropriately set according to the type of display medium involved in display, the shape and arrangement of the electrodes to be arranged, and is not limited in general. The height of the partition is adjusted to 100 to 100 μm, preferably 3 to 50 μm, and the height of the partition wall to 10 to 100 μm, preferably 10 to 50 μm.
In forming the partition walls, a both-rib method in which ribs are formed on each of the opposing substrates 11 and 12 and then bonded, and a single-rib method in which ribs are formed only on one substrate are conceivable. In the present invention, any method is preferably used.
As shown in FIG. 7, the cells formed by the partition walls made of these ribs are exemplified by a square shape, a triangular shape, a line shape, a circular shape, and a hexagonal shape as viewed from the substrate plane direction. And a mesh shape. It is better to make the portion corresponding to the cross section of the partition wall visible from the display surface side (the area of the cell frame) as small as possible, and the display becomes clearer.
Examples of the method for forming the partition include a mold transfer method, a screen printing method, a sand blast method, a photolithography method, and an additive method. Any of these methods can be suitably used for the information display panel of the present invention, and among these, a photolithography method using a resist film and a mold transfer method are suitably used.

  Next, the powder fluid used as the display medium composed of the display medium particles will be described. As for the name of the powder fluid used in the information display panel of the present invention, the present applicant has obtained the right of “Electronic Powder Fluid (registered trademark): Registration No. 4636931”.

  The “powder fluid” in the present invention is a substance in an intermediate state of both fluid and particle characteristics that exhibits fluidity by itself without borrowing the force of gas or liquid. For example, liquid crystal is defined as an intermediate phase between a liquid and a solid, and has fluidity that is a characteristic of liquid and anisotropy (optical properties) that is a characteristic of solid (Heibonsha: Encyclopedia) . On the other hand, the definition of particle is an object with a finite mass even if it is negligible, and is said to be affected by gravity (Maruzen: Physics Encyclopedia). Here, even in the case of particles, there are special states of gas-solid fluidized bed and liquid-solid fluids. When gas is flowed from the bottom plate to the particles, upward force is applied to the particles according to the velocity of the gas. Is a gas-solid fluidized bed that is in a state where it can easily flow when it balances with gravity, and it is also called a liquid-solid fluidized state that is fluidized by a fluid (ordinary) Company: Encyclopedia). As described above, the gas-solid fluidized bed body and the liquid-solid fluid are in a state of using a gas or liquid flow. In the present invention, it has been found that a substance in a state of fluidity can be produced specifically without borrowing the force of such gas and liquid, and this is defined as powder fluid.

  That is, the pulverulent fluid in the present invention is in an intermediate state having both the characteristics of particles and liquid, as in the definition of liquid crystal (liquid and solid intermediate phase), and is the characteristic of the above-mentioned particles. It is a substance that is extremely unaffected and exhibits a unique state with high fluidity. Such a substance can be obtained in an aerosol state, that is, in a dispersion system in which a solid or liquid substance is stably suspended as a dispersoid in a gas, and the solid substance is regarded as a dispersoid in the information display panel of the present invention. To do.

The information display panel to which the present invention is applied encloses a powder fluid that exhibits high fluidity in an aerosol state in which at least one is transparent, between opposed substrates, for example, solid particles in gas are stably suspended as a dispersoid Such a powder fluid can be easily and stably moved by a Coulomb force or the like with a small electric field force or the like.
As described above, for example, the powder fluid used as a display medium in the present invention is a substance in an intermediate state between fluid and particles that exhibits fluidity by itself without borrowing the force of gas or liquid. It is. This powder fluid can be in an aerosol state in particular, and in the information display panel of the present invention, it is used as a display medium in a state where a solid substance floats relatively stably as a dispersoid in the gas.

Next, display medium particles (hereinafter also referred to as particles) constituting the display medium in the information display panel that is the subject of the present invention will be described. The display medium particles are composed of the display medium particles as they are to form a display medium, or are combined with other particles to form a display medium, or adjusted and configured to become a powder fluid to form a display medium. Or used.
The particles can contain a charge control agent, a colorant, an inorganic additive, and the like, as necessary, in the resin as the main component, as necessary. Examples of resins, charge control agents, colorants, and other additives will be given below.

  Examples of the resin include urethane resin, urea resin, acrylic resin, polyester resin, acrylic urethane resin, acrylic urethane silicone resin, acrylic urethane fluororesin, acrylic fluororesin, silicone resin, acrylic silicone resin, epoxy resin, polystyrene resin, styrene Acrylic resin, polyolefin resin, butyral resin, vinylidene chloride resin, melamine resin, phenol resin, fluororesin, polycarbonate resin, polysulfone resin, polyether resin, polyamide resin and the like can be mentioned, and two or more kinds can be mixed. In particular, acrylic urethane resin, acrylic silicone resin, acrylic fluororesin, acrylic urethane silicone resin, acrylic urethane fluororesin, fluororesin, and silicone resin are suitable from the viewpoint of controlling the adhesive force with the substrate.

  The charge control agent (CCA) is not particularly limited, but examples of the negative charge control agent include salicylic acid metal complexes, metal-containing azo dyes, metal-containing oil-soluble dyes (including metal ions and metal atoms), quaternary Ammonium salt compounds, calixarene compounds, boron-containing compounds (benzyl acid boron complexes), nitroimidazole derivatives and the like can be mentioned. Examples of the positive charge control agent include nigrosine dyes, triphenylmethane compounds, quaternary ammonium salt compounds, polyamine resins, imidazole derivatives, and the like. In addition, metal oxides such as ultrafine silica, ultrafine titanium oxide, ultrafine alumina, nitrogen-containing cyclic compounds such as pyridine and derivatives and salts thereof, various organic pigments, resins containing fluorine, chlorine, nitrogen, etc. are also charged. It can also be used as a control agent.

  As the colorant, various organic or inorganic pigments and dyes as exemplified below can be used.

Examples of the black colorant include carbon black, copper oxide, manganese dioxide, aniline black, activated carbon and the like.
Examples of blue colorants include C.I. I. Pigment blue 15: 3, C.I. I. Pigment Blue 15, Bituminous Blue, Cobalt Blue, Alkaline Blue Lake, Victoria Blue Lake, Phthalocyanine Blue, Metal-free Phthalocyanine Blue, Phthalocyanine Blue Partial Chlorides, Fast Sky Blue, Indanthrene Blue BC, and the like.
Examples of red colorants include bengara, cadmium red, red lead, mercury sulfide, cadmium, permanent red 4R, risor red, pyrazolone red, watching red, calcium salt, lake red D, brilliant carmine 6B, eosin lake, rhodamine lake B, Alizarin Lake, Brilliant Carmine 3B, C.I. I. Pigment Red 2 etc.

Yellow colorants include chrome yellow, zinc yellow, cadmium yellow, yellow iron oxide, mineral first yellow, nickel titanium yellow, navel yellow, naphthol yellow S, Hansa Yellow G, Hansa Yellow 10G, Benzidine Yellow G, Benzidine Yellow GR, Quinoline Yellow Lake, Permanent Yellow NCG, Tartrazine Lake, C.I. I. Pigment Yellow 12 etc.
Examples of green colorants include chrome green, chromium oxide, pigment green B, C.I. I. Pigment Green 7, Malachite Green Lake, Final Yellow Green G, etc.
Examples of the orange colorant include red chrome yellow, molybdenum orange, permanent orange GTR, pyrazolone orange, Vulcan orange, indanthrene brilliant orange RK, benzidine orange G, indanthrene brilliant orange GK, C.I. I. Pigment Orange 31 etc.
Examples of purple colorants include manganese purple, first violet B, and methyl violet lake.
Examples of white colorants include zinc white, titanium oxide, antimony white, and zinc sulfide.

  Examples of extender pigments include barite powder, barium carbonate, clay, silica, white carbon, talc, and alumina white. Examples of various dyes such as basic, acidic, disperse, and direct dyes include nigrosine, methylene blue, rose bengal, quinoline yellow, and ultramarine blue.

Examples of inorganic additives include titanium oxide, zinc white, zinc sulfide, antimony oxide, calcium carbonate, lead white, talc, silica, calcium silicate, alumina white, cadmium yellow, cadmium red, cadmium orange, titanium yellow, Examples include bitumen, ultramarine blue, cobalt blue, cobalt green, cobalt violet, iron oxide, carbon black, manganese ferrite black, cobalt ferrite black, copper powder, and aluminum powder.
These pigments and inorganic additives can be used alone or in combination. Of these, carbon black is particularly preferable as the black pigment, and titanium oxide is preferable as the white pigment.
The above-described various colorants can be blended to produce display medium particles having a desired color.

  The particles for display medium (hereinafter also referred to as particles) have an average particle diameter d (0.5) in the range of 1 to 20 μm, and are preferably uniform. If the average particle diameter d (0.5) is larger than this range, the display is not clear. If the average particle diameter d (0.5) is smaller than this range, the cohesive force between the particles becomes too large, which hinders movement as a display medium.

Furthermore, in the present invention, regarding the particle size distribution of each particle, the particle size distribution Span represented by the following formula is less than 5, preferably less than 3.
Span = (d (0.9) −d (0.1)) / d (0.5)
(However, d (0.5) is a numerical value expressing the particle diameter in μm that 50% of the particles are larger than this and 50% is smaller than this, and d (0.1) is a particle in which the ratio of the smaller particles is 10%. (Numerical value expressed in μm, and d (0.9) is a numerical value expressed in μm for a particle diameter of 90% or less.)
By keeping Span within a range of 5 or less, the size of each particle is uniform, and movement as a uniform display medium becomes possible.

  Furthermore, regarding the correlation between the particles, the ratio of the d (0.5) of the particles having the minimum diameter to the d (0.5) of the particles having the maximum diameter among the used particles is set to 50 or less, preferably 10 or less. It is essential. Even if the particle size distribution Span is reduced, particles with different charging characteristics move in opposite directions, so that the particle size is close to each other and each particle can be easily moved in the opposite direction by the equivalent amount. This is within this range.

The particle size distribution and the particle size can be obtained from a laser diffraction / scattering method or the like. When laser light is irradiated onto particles to be measured, a light intensity distribution pattern of diffracted / scattered light is spatially generated, and this light intensity pattern has a corresponding relationship with the particle diameter, so that the particle diameter and particle diameter distribution can be measured. .
Here, the particle size and particle size distribution in the present invention are obtained from a volume-based distribution. Specifically, using a Mastersizer2000 (Malvern Instruments Ltd.) measuring instrument, put particles into a nitrogen stream and use the attached analysis software (software based on volume-based distribution using Mie theory). The diameter and particle size distribution can be measured.

  The charge amount of the display medium particles naturally depends on the measurement conditions, but the charge amount of the display medium particles in the information display panel is almost the same as the initial charge amount, the contact with the partition walls, the contact with the substrate, and the elapsed time. It was found that depending on the charge decay, the saturation value of the charging behavior of the particles for the display medium is a dominant factor.

  As a result of intensive studies, the present inventors have been able to evaluate the range of proper charging characteristics of display medium particles by measuring the charge amount of the particles used in the display medium using the same carrier particles in the blow-off method. I found.

Furthermore, when a display medium such as a particle group or a powder fluid composed of display medium particles is applied to an information display panel that is an object of the present invention, the gas management of the void portion surrounding the display medium between the substrates is performed. It is important and contributes to improved display stability. Specifically, it is important that the relative humidity at 25 ° C. is 60% RH or less, and preferably 50% RH or less for the humidity of the gas in the gap.
6 (a) and 6 (b), the gap portions are electrodes 15 and 16 (when electrodes are provided inside the substrate) from the portion sandwiched between the opposing substrates 11 and 12, and the display medium 13 A gas portion in contact with a so-called display medium other than the occupied portion, the occupied portion of the partition wall 14 (when a partition wall is provided), and the seal portion of the information display panel is meant.
The gas in the gap is not limited as long as it is in the humidity region described above, but dry air, dry nitrogen, dry argon, dry helium, dry carbon dioxide, dry methane, and the like are preferable. This gas needs to be sealed in an information display panel so that the humidity is maintained, for example, filling a display medium, assembling an information display panel in a predetermined humidity environment, It is important to apply a sealing material and a sealing method that prevent moisture from entering from the outside.

The distance between the substrates in the information display panel that is the subject of the present invention is not limited as long as the display medium can be moved and the contrast can be maintained, but is usually adjusted to 10 to 500 μm, preferably 10 to 200 μm.
The volume occupation ratio of the display medium in the space between the opposing substrates is preferably 5 to 70%, more preferably 5 to 60%. If it exceeds 70%, the movement of the display medium is hindered, and if it is less than 5%, the contrast tends to be unclear.

  The information device of the present invention can display display information to be added without any interruption in the passively or actively driven display that is sequentially addressed for each scan electrode, and can display the followability satisfactorily. It can be suitably used as an information device for such applications.

It is a figure which shows the structure of an example of the information equipment of this invention. It is a figure for demonstrating an example of the partial writing in the information equipment of this invention. It is a figure for demonstrating an example of the partial writing / partial deletion in the information equipment of this invention. It is a figure for demonstrating the other example of the partial writing / partial deletion in the information equipment of this invention. It is a figure for demonstrating the further another example of the partial writing / partial erasing in the information equipment of this invention. (A), (b) is a figure which shows an example of the panel for information displays used suitably as a display in the information equipment of this invention, respectively. It is a figure which shows an example of the shape of the partition in the panel for information displays used suitably as a display in the information equipment of this invention. It is a figure for demonstrating the problem in the conventional information equipment. It is a figure for demonstrating the problem in the conventional information equipment. It is a figure for demonstrating the problem in the conventional information equipment. It is a figure for demonstrating the problem in the conventional information equipment. It is a figure for demonstrating the problem in the conventional information equipment. It is a figure for demonstrating the problem in the conventional information equipment. It is a figure for demonstrating the problem in the conventional information equipment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Display device 2 Position detector 3 Information equipment 4 Input means 5 Cursor 11, 12 Board | substrate 13 Display medium (particle group, powder fluid)
13W White display medium 13Wa White display medium particles 13B Black display medium 13Ba Black display medium particles 14 Bulkhead 15, 16 Electrode

Claims (3)

  It consists of a passive or active driven display that has display memory characteristics and is sequentially addressed for each scan electrode, and a position detector that detects the position of the input means, and displays corresponding to the input of the position detector In the information device for updating the display information, when displaying the display information to be added corresponding to the input by the position detector on the display, only the scanning electrode corresponding to the position on the display of the display information to be added An information display device characterized by being configured to scan.   When displaying display information to be updated in response to input by the position detector, a plurality of scan electrodes corresponding to positions on the display of display information to be erased are simultaneously selected and erased, and then a display to be added 2. The information display device according to claim 1, wherein when displaying information, the scanning device is configured to scan only the scanning electrode corresponding to the position on the display of the display information to be added.   In the display medium, the display medium is sealed between a scanning electrode and a selection electrode provided so as to intersect each other on the substrate, and the display medium is sealed between the two hollow substrates at least one of which is transparent. 3. The information device according to claim 1, wherein the information device is an information display panel that displays information such as an image by moving a display medium by applying an electric field.

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