JP2007310537A - Touch panel integrated information display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a touch panel integrated information display device which is improved in visibility by suppressing interface reflection by employing a touch panel of an ultrasonic surface acoustic wave system which includes no electrode. <P>SOLUTION: The touch panel integrated information display device 11 constituted by integrating a display device 12 which displays information and a touch panel 13 for inputting information to the display device 12 is improved in contrast by employing the touch panel of the ultrasonic surface acoustic wave system as the touch panel 13 and also securely suppressing interface reflection by forming a predeterminded film thickness adhesive layer (or a gap) 15 between the touch panel 13 and display device 12. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a touch panel integrated information display device including a display device for displaying information and a touch panel for inputting information to the display device.

As a conventional example of a touch panel integrated information display device, for example, as shown in FIG. 5, a display device 51 and a resistive touch panel 52 are integrally arranged. The resistive touch panel 52 includes an upper substrate 53 made of a film (for example, a polymer film), an upper transparent electrode 54 formed on the upper substrate 53, a lower transparent electrode 55 formed on a lower substrate (not shown), and an upper portion. It consists of a spacer 56 disposed between the transparent electrode 54 and the lower transparent electrode 55, a hard coat 57 and the like laminated on the upper substrate 54 (see, for example, Patent Document 1).
JP 2004-45518 A

  The resistive touch panel used in the above-described conventional touch panel integrated information display device has a large reflection at the electrode interface. Therefore, the touch panel integrated information display is configured by integrally stacking the resistive touch panel on the front surface of the display device. In the apparatus, the light transmittance of the touch panel is remarkably reduced, and thus the visibility is deteriorated.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a touch panel integrated information display device that suppresses interface reflection and improves visibility by using an ultrasonic surface acoustic wave type touch panel having a configuration that does not include an electrode. To do.

  In order to achieve the above object, a touch panel integrated information display device of the present invention is a touch panel integrated information display device in which a display device for displaying information and a touch panel for inputting information to the display device are integrally arranged. An ultrasonic surface acoustic wave type touch panel is used as the touch panel.

  As a suitable example of the touch panel integrated information display device of the present invention, a pressure-sensitive adhesive layer having a predetermined thickness is formed between the touch panel and the display device, and a gap having a predetermined thickness is formed between the touch panel and the display device. And a display medium in which an information display panel constituting the display device for displaying the information is composed of colored particles for display having chargeability between two opposing substrates at least one of which is transparent And a display medium is moved by an electric field generated in the substrate to display information such as an image.

  According to the touch panel integrated information display device of the present invention configured as described above, as a touch panel in a touch panel integrated information display device in which a display device that displays information and a touch panel that inputs information to the display device are integrally disposed, Since the ultrasonic surface acoustic wave type touch panel having no electrode is used, reflection at the electrode interface can be suppressed, and the contrast is improved. Accordingly, a touch panel integrated information display device with improved visibility can be provided.

  Hereinafter, the best mode for carrying out the present invention will be described in detail with reference to the drawings.

FIG. 1 is a diagram showing an example of use of a touch panel integrated information display device of the present invention. The touch panel integrated information display device 11 of the present invention includes a display device 12 for displaying information and a touch panel 13 for inputting information, and the touch panel 13 is integrally disposed on the front surface of the display device 12.
As the display device 12, a display medium composed of colored particles for display having a charging property is sealed between two opposing substrates, at least one of which is transparent, and the display medium is moved by an electric field generated in the substrate. Thus, a passively or actively driven charged particle driving type information display panel that is sequentially addressed for each scanning electrode, which will be described later, is preferably used. As the touch panel 13, an optically transparent one having a position detection function and a writing input function can be used. In the present invention, an ultrasonic surface acoustic wave type touch panel having no electrode is used. Yes.

  Next, an example of the configuration of a charged particle drive type information display panel used for the display device in the touch panel integrated information display device of the present invention will be described. This charged particle drive type information display panel includes a plurality of two-color display media composed of two colored display particles having different charging characteristics, each of which is partitioned by a partition between at least one transparent substrate. It has the structure enclosed in the cell. When an electric field is applied to the display medium enclosed between two substrates, the charged display medium is attracted by the electric field force or Coulomb force along the applied electric field direction, and the display medium changes in the electric field direction. Information is displayed by changing the moving direction by. Therefore, it is necessary to design the information display panel so that the display medium can move uniformly and maintain stability when the display information is rewritten or when the display information is continuously displayed. 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.

A principle configuration of an information display panel used for the display device in the touch panel integrated information display device of the present invention will be described with reference to FIGS.
In the example shown in FIG. 2A, the display medium 3 is composed of at least two or more kinds of display media 3 (here, white particles for display 3Wa) having different optical reflectivity and charging characteristics composed of at least one kind of particles. Generated by applying a voltage between an electrode 5 provided on the substrate 1 and an electrode 6 provided on the substrate 2. Depending on the electric field to be moved, the substrate 1 and 2 are moved vertically to make the black display medium 3B visually recognized by the observer, or the white display medium 3W is visually recognized by the observer. It is carried out. In the example shown in FIG. 2A, a partition 4 is provided between the substrates 1 and 2 in a lattice shape, for example, to form a cell. In addition, in FIG. 2A, the front partition is omitted. The electrode may be provided outside the substrate or may be provided so as to be embedded inside the substrate.
In the example shown in FIG. 2 (b), one type of display medium 3 having optical reflectivity and chargeability composed of at least one type of particles (here, white consisting of particles of particles 3Wa for white display media). The display medium 3W is moved in a direction parallel to the substrates 1 and 2 in accordance with an electric field generated by applying a voltage between the electrode 5 provided on the substrate 1 and the electrode 6 provided on the substrate 2. The white display medium 3W is visually recognized by the observer and white display is performed, or the color of the electrode 6 or the substrate 1 is visually recognized by the observer and the color of the electrode 6 or the substrate 1 is displayed. In the example shown in FIG. 2B, for example, a grid-like partition wall 4 is provided between the substrates 1 and 2 to form a cell. Further, in FIG. 2 (b), the front partition is omitted. The electrode of the substrate may be provided outside the substrate or may be embedded in the substrate.

  Next, a configuration example of the touch panel integrated information display device of the present invention will be described with reference to FIG.

  FIG. 3 is a diagram showing a basic configuration in Configuration Example 1 of the touch panel integrated information display device of the present invention. The touch panel in the touch panel integrated information display device of the present invention is provided with anti-reflection measures when configured in combination with, for example, a charged particle driving type information display panel.

  That is, in the touch panel integrated information display device of Configuration Example 1, an ultrasonic surface acoustic wave type touch panel is used as the touch panel 13, and the transducers 14 are provided at both ends of the outermost surface of the touch panel 13. . The touch panel 13 is coupled to the display surface side transparent substrate 6 of the display device 12 via an adhesive layer 15 having a predetermined thickness. Instead of the adhesive layer 15 having the predetermined thickness, a gap having the same thickness is formed, and the touch panel 13 is coupled to the display surface side transparent substrate 6 of the display device 12 through the gap. It may be.

  According to the touch panel integrated information display device of the present invention, in the touch panel integrated information display device in which the display device 12 and the touch panel 13 are integrally arranged, (a) the ultrasonic surface having a configuration not including an electrode as the touch panel 13. The use of an elastic wave type touch panel, (b) an adhesive layer 15 having a predetermined film thickness or a gap having the same thickness is interposed between the display surface side transparent substrate 6 of the display device 12 and the touch panel 13. This makes it possible to reliably suppress reflection at the electrode interface. Therefore, since the contrast is improved, the touch panel integrated information display device with improved visibility is obtained.

  Hereinafter, each member which comprises the charged particle drive type information display panel used for a display apparatus by the touchscreen integrated information display apparatus of this invention, for example is demonstrated.

  As for the substrate, the display surface side substrate is a transparent substrate on which the color of the display medium can be confirmed from the outside of the panel, and a material having high visible light transmittance and good heat resistance is preferable. The back substrate may be transparent or opaque. Examples of the substrate include inorganic substrates such as glass and ceramics, polyethylene terephthalate (PET), polyethylene terephthalate (PEN), polyethylene (PE), polycarbonate (PC), polyimide (PI), and polyethersulfone (PES). Organic polymer substrates such as acrylic can be used. 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.

  As an electrode forming material of an electrode provided on a substrate, metals such as aluminum, silver, nickel, copper, and gold, indium tin oxide (ITO), indium oxide, conductive tin oxide, antimony tin oxide (ATO), conductive Examples include conductive metal oxides such as zinc oxide, and conductive polymers such as polyaniline, polypyrrole, and polythiophene, which are appropriately selected and used. The electrode can be formed by patterning the above-described materials into a thin film by sputtering, vacuum deposition, CVD (chemical vapor deposition), coating, or the like, or by mixing a conductive agent with a solvent or synthetic resin binder. A method of applying and patterning is used. The electrode provided on the viewing side (display surface side) substrate needs to be transparent, but the electrode provided on the back side substrate does not need to be transparent. In any case, the above-mentioned material that is conductive and capable of pattern formation 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 are the same as those of the electrode provided on the display surface side substrate described above, but need not be transparent. In this case, the external voltage input may be superimposed with direct current or alternating current.

The shape of the partition provided on the substrate 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 generally limited. However, the width of the partition is 2 to 100 μm, preferably 3 The height of the partition wall is adjusted to 10 to 100 μm, preferably 10 to 50 μm.
In forming the partition wall, a both-rib method in which ribs are formed on each of the opposing substrates 1 and 2 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. 4, the cells formed by the partition walls made up 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 plane of the substrate. 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 state 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 an information display panel mounted as a display device on the touch panel integrated information display device of the present invention, and among these, a photolithography method using a resist film and a mold transfer method are preferred. Used.

Next, display colored particles (hereinafter also referred to as particles) constituting a display medium in a charged particle drive type information display panel used for example in a display device according to the present invention will be described. The colored particles for display are used as they are as a display medium by being composed of the colored particles for display as they are, or by being combined with other particles as a display medium.
The particles can contain a charge control agent, a colorant, an inorganic additive, and the like, if necessary, in the resin as the main component, as in the conventional case. 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 is not particularly limited. 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), and quaternary ammonium salt systems. Examples thereof include compounds, calixarene compounds, boron-containing compounds (benzyl acid boron complexes), and nitroimidazole derivatives. 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. In addition, white particles for display and black particles for display constituting the display medium used in the present invention can be produced by combining a plurality of the above-described additives. Among these, white pigments such as titanium oxide are preferably used for the display white particles, and black pigments such as carbon black are preferably used for the display black particles.
Colored particles for display having a desired color can be produced by blending the colorant.

  Further, the colored particles for display (hereinafter, also referred to as particles) used in the present invention 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.

In addition, when applying a display medium composed of colored particles for display to a dry information display panel that is driven in the air, it is important to manage the gas in the void surrounding the display medium between the substrates. Contributes to improved 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.
2A, 2B, and 3, the gap portions are electrodes 5 and 6 (when electrodes are provided inside the substrate) from the portion sandwiched between the opposing substrates 1 and 2, display A gas portion in contact with a so-called display medium excluding the occupied portion of the medium 3, the occupied portion of the partition wall 4, 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.

In the information display panel used in the display device of the present invention, the distance between the substrates is not limited as long as the display medium can be moved and the contrast can be maintained.
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%. When it exceeds 70%, the movement as a display medium is hindered, and when it is less than 5%, the contrast tends to be unclear.
The display panel constituting the display device used in the present invention is not limited to the above charged particle driving type display panel, and a liquid crystal type, an electrophoretic type, a rotating ball type or the like can be suitably used.

  EXAMPLES Hereinafter, the present invention will be described more specifically with reference to examples and comparative examples of the present invention, but the present invention is not limited to the following examples.

<Comparative Example 1>
As shown in FIG. 5, a resistive film type touch panel 52 was integrally arranged on the display surface side transparent substrate of the charged particle drive type display device 51, and a touch panel integrated information display device of Comparative Example 1 was produced.
The white reflectance when the white solid image was displayed on the touch panel integrated information display device of Comparative Example 1 was 16%.

<Example 1>
As shown in FIG. 3, an ultrasonic surface acoustic wave system having a configuration that does not include an electrode on the display surface side transparent substrate 6 of the charged particle driving type display device 12 via an adhesive layer 15 having a film thickness of 5 μm. The touch panel 13 was integrally arranged to produce a touch panel integrated information display device of Example 1.
The white reflectance when white solid image display was performed with the touch panel integrated information display device of Example 1 was 21%. It was confirmed that the white reflectance was improved as compared with Comparative Example 1.

<Example 2>
As shown in FIG. 3, an ultrasonic surface acoustic wave system having a configuration in which an electrode is not included on a display surface side transparent substrate 6 of a charged particle drive type display device 12 via an adhesive layer 15 having a thickness of 50 μm. The touch panel 13 was integrally arranged to produce a touch panel integrated information display device of Example 2.
The white reflectance when white solid image display was performed with the touch panel integrated information display device of Example 2 was 21%. It was confirmed that the white reflectance was improved as compared with Comparative Example 1.

<Example 3>
As shown in FIG. 3, an ultrasonic surface acoustic wave system having a configuration that does not include an electrode on the transparent substrate 6 on the display surface side of the charged particle drive type display device 12 via an adhesive layer 15 having a thickness of 100 μm. The touch panel 13 was integrally arranged to produce a touch panel integrated information display device of Example 3.
The white reflectance when the white solid image was displayed on the touch panel integrated information display device of Example 3 was 21%. It was confirmed that the white reflectance was improved as compared with Comparative Example 1.

<Example 4>
As shown in FIG. 3, an ultrasonic surface acoustic wave type touch panel having a configuration that does not include an electrode on a display surface side transparent substrate 6 of a charged particle driving type display device 12 via a gap 15 having a thickness of 5 μm. 13 was integrated, and the touch panel integrated information display device of Example 4 was produced.
The white reflectance when white solid image display was performed with the touch panel integrated information display device of Example 4 was 20%. It was confirmed that the white reflectance was improved as compared with Comparative Example 1.

<Example 5>
As shown in FIG. 3, an ultrasonic surface acoustic wave type touch panel having a configuration that does not include an electrode on the display surface side transparent substrate 6 of the charged particle drive type display device 12 via a gap 15 having a thickness of 50 μm. 13 was integrated, and the touch panel integrated information display apparatus of Example 5 was produced.
The white reflectance when white solid image display was performed with the touch panel integrated information display device of Example 5 was 20%. It was confirmed that the white reflectance was improved as compared with Comparative Example 1.

<Example 6>
As shown in FIG. 3, an ultrasonic surface acoustic wave type touch panel having a configuration that does not include an electrode on the transparent substrate 6 on the display surface side of the charged particle drive type display device 12 via a gap 15 having a thickness of 100 μm. 13 was integrated, and the touch panel integrated information display device of Example 6 was produced.
The white reflectance when the white solid image was displayed on the touch panel integrated information display device of Example 6 was 20%. It was confirmed that the white reflectance was improved as compared with Comparative Example 1.

The touch panel integrated information display device of the present invention is an information display device capable of writing and displaying information on the information display screen through input via the touch panel, and information that can be displayed even when the written display information is turned off. As a display device, a notebook computer, an electronic notebook, a portable information device called PDA (Personal Digital Assistants), a display unit of a mobile device such as a mobile phone or a handy terminal, an electronic book such as an electronic book or an electronic newspaper, a signboard, a poster, Bulletin boards such as blackboards and whiteboards, display units for electronic desk calculators, home appliances, automotive products, card display units such as point cards and IC cards, electronic advertisements, information boards, electronic POPs (Point Of Presence, Point Of Purchase advertising) ), Electronic price tag, electronic shelf label, electronic score, display part of RF-ID equipment, POS terminal It is suitably used for display units of various electronic devices such as car navigation devices and watches.
The information display panel driving method according to the present invention includes a simple matrix driving display panel, a static driving display panel that does not use a switching element in the panel itself, and three thin film transistors (TFTs). Various types of information display panels such as an active matrix drive type display panel using a two-terminal switching element represented by a terminal switching element or a thin film diode (TFD) can be used.

It is a figure which shows the usage example of the touchscreen integrated information display apparatus of this invention. (A), (b) is a figure which shows the fundamental structure of the information display panel used for a display apparatus by this invention, respectively. It is a figure which shows one structural example of the touchscreen integrated information display apparatus of this invention. It is a figure which shows an example of the shape of the partition in the charged particle drive type information display panel used for example for a display apparatus by this invention. It is a figure for demonstrating the structure of the touchscreen integrated information display apparatus of a prior art example.

Explanation of symbols

1 Substrate (Back side substrate)
2 Substrate (Display side transparent substrate)
3 Display media (particle group)
3W White display medium 3B Black display medium 3Wa White particles for display 3Ba Black particles for display 4 Bulkhead 5 Electrode 6 Transparent electrode 11 Touch panel integrated information display device 12 Display device (information display panel)
13 Ultrasonic surface acoustic wave type touch panel 14 Transducer 15 Adhesive layer (or void)

Claims (4)

A touch panel integrated information display device comprising a display device for displaying information and a touch panel for inputting information to the display device,
A touch panel integrated information display device using an ultrasonic surface acoustic wave type touch panel as the touch panel.   The touch panel integrated information display device according to claim 1, wherein an adhesive layer having a predetermined thickness is formed between the touch panel and the display device.   The touch panel integrated information display device according to claim 1, wherein a gap having a predetermined thickness is formed between the touch panel and the display device.   An information display panel constituting the display device for displaying the information encloses a display medium made of colored particles for display having a charging property between two opposing substrates, at least one of which is transparent, The touch panel integrated information display device according to any one of claims 1 to 3, wherein the display medium is moved by the generated electric field to display information such as an image.

Images