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WO2009145080A1 - Panneau tactile - Google Patents

Panneau tactile Download PDF

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Publication number
WO2009145080A1
WO2009145080A1 PCT/JP2009/059157 JP2009059157W WO2009145080A1 WO 2009145080 A1 WO2009145080 A1 WO 2009145080A1 JP 2009059157 W JP2009059157 W JP 2009059157W WO 2009145080 A1 WO2009145080 A1 WO 2009145080A1
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WO
WIPO (PCT)
Prior art keywords
touch panel
substrate
walled carbon
electrode substrate
conductive layer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2009/059157
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English (en)
Japanese (ja)
Inventor
高広 北野
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kuraray Co Ltd
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Kuraray Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kuraray Co Ltd filed Critical Kuraray Co Ltd
Priority to JP2010514443A priority Critical patent/JP5519497B2/ja
Publication of WO2009145080A1 publication Critical patent/WO2009145080A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/045—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using resistive elements, e.g. a single continuous surface or two parallel surfaces put in contact

Definitions

  • the present invention relates to a touch panel using an electrode substrate having a conductive layer composed of entangled single-walled carbon nanotubes (but not using a binder resin).
  • Touch panel is adopted for the display. That is, a transparent (light transmissive) touch panel (input device) is disposed on a display such as a liquid crystal screen. When a touch panel provided on the front surface of the display is touched, information is input.
  • a touch panel for example, a touch panel having a structure in which the transparent electrode layers of two transparent electrode substrates are arranged to face each other (so-called resistance film type touch panel) is known.
  • This resistive touch panel is often used for mobile devices (for example, mobile phones and mobile game machines). These portable devices have a small screen. And since the screen is small, it is designed so that it can be effectively used up to the edge of the screen. For this reason, the user often presses the screen edge.
  • a so-called capacitive touch panel is known as a touch panel.
  • This type of touch panel also has a conductive layer provided on a transparent substrate. Again, indium and tin oxide (ITO) is used.
  • ITO indium and tin oxide
  • Japanese Patent Application Laid-Open No. 2004-202948 is known as a technique for an electrode substrate of a touch panel. That is, it comprises a base material layer made of a transparent resin and a conductive layer laminated on the base material layer, the conductive layer is disposed facing the substrate side conductive layer, and is brought into an energized state in contact with the substrate side conductive layer.
  • a sheet-like resin laminate for a touch panel wherein the conductive layer is a transparent matrix resin and carbon nanowires (for example, single-walled carbon nanotubes (for example, SWCNT manufactured by Hyperion), multi-walled carbon nanotubes (for example, Hyperion) MWCNT), vapor-grown carbon nanofibers (for example, VGCF manufactured by Showa Denko KK), etc., preferably a resin composition in which multi-walled carbon nanotubes or vapor-grown carbon nanofibers) are dispersed.
  • carbon nanowires for example, single-walled carbon nanotubes (for example, SWCNT manufactured by Hyperion), multi-walled carbon nanotubes (for example, Hyperion) MWCNT), vapor-grown carbon nanofibers (for example, VGCF manufactured by Showa Denko KK), etc., preferably a resin composition in which multi-walled carbon nanotubes or vapor-grown carbon nanofibers) are dispersed.
  • a sheet-like resin laminate for touch panels has been proposed.
  • a sheet-like resin laminate for a touch panel including a base material layer made of a transparent resin and a conductive layer laminated on the base material layer is interposed via a spacer in a state where the conductive layer faces the conductive layer on the substrate side.
  • a touch panel disposed on the upper side of the substrate at a predetermined interval, wherein the conductive layer of the sheet-like resin laminate for touch panel is made of a resin composition in which carbon nanowires are dispersed in a transparent matrix resin.
  • an electrode substrate (a sheet-like resin laminate for a touch panel) rich in transparency, conductivity, and flexibility can be obtained. And it is said that it is suitable for touch panels.
  • JP 2004-202948 A a sheet-like resin laminate for a touch panel
  • the proposed technique that is, a touch panel using an electrode substrate in which carbon nanowires are dispersed in a matrix resin
  • the proposed technique has a high contact resistance (high surface resistance) between carbon nanowires because the matrix resin is contained in the conductive layer. I came to realize that. And since resistance was high, it came to realize that the touch panel had malfunctioning.
  • transparent conductive films are known.
  • This type of film has a transparent conductive layer formed on an insulating substrate by a dry method such as PVD or CVD or a wet method such as coating.
  • a conductive coating composition containing a conductive powder and a binder is prepared.
  • This wet method has a simpler apparatus and higher productivity than the dry method. Furthermore, it can be easily applied to continuous or large substrates.
  • a technique of a transparent conductive film has been proposed (for example, Japanese Patent Application Laid-Open No. 2005-255985). That is, in Japanese Patent Application Laid-Open No.
  • the presence of carbon nanotubes reduces the production cost of conventional materials that do not contain carbon nanotubes, and improves the transparency and conductivity of the produced carbon nanotube-containing coating film.
  • the carbon nanotube has a three-dimensional network structure, and the carbon nanotube is exposed on the surface of the carbon nanotube-containing coating film by infiltrating a dispersion containing resin into the carbon nanotube.
  • Containing coating films have been proposed.
  • the carbon nanotube-containing coating film applied on a substrate the carbon nanotube-containing coating film has a three-dimensional network structure and is exposed on the surface of the carbon nanotube-containing coating film.
  • a carbon nanotube-containing coating film characterized by the above has been proposed.
  • Japanese Patent Application Laid-Open No. 2005-255985 does not mention any word about the touch panel to be provided by the present invention.
  • Japanese Patent Application Laid-Open No. 2005-255985 does not allow the description of the touch panel and even the words pronounced of the touch panel.
  • JP-A-2005-255985 has proposed a transparent conductive film
  • a touch panel was prototyped based on the technology described in the examples of the above-mentioned publication.
  • this prototype touch panel cannot perform as a touch panel. In other words, it was not something that could be commercialized.
  • a first problem to be solved by the present invention is to provide a touch panel that is not easily damaged even when bent so that the radius of curvature is small and has high mechanical durability.
  • the second problem to be solved by the present invention is to provide a touch panel with low surface resistance and excellent operability.
  • a touch panel having an electrode substrate The electrode substrate is A substrate, A conductive layer provided on the substrate;
  • the conductive layer is Having entangled single-walled carbon nanotubes, It is solved by a touch panel characterized by having no binder resin.
  • the touch panel in which the single-walled carbon nanotube of the touch panel is a single-walled carbon nanotube obtained by an arc discharge method is preferable.
  • a touch panel in which the conductive layer further has fullerene is particularly preferable.
  • a touch panel in which the fullerene is a fullerene hydroxide is particularly preferable.
  • a touch panel using an electrode substrate in which a protective layer is provided on the conductive layer is particularly preferable.
  • a touch panel using an electrode substrate having an anti-Newton layer is particularly preferable.
  • the touch panel of the present invention is, for example, a capacitive touch panel. Or it is a resistive film type touch panel. Two electrode substrates are used in this resistive film type touch panel.
  • the two electrode substrates may be the electrode substrates. Alternatively, one of the two electrode substrates may be the electrode substrate.
  • the conductive layer of the present invention has entangled single-walled carbon nanotubes. However, it does not have a binder resin. For this reason, even if the touch panel of the present invention is greatly bent, it is difficult to break, and the durability of the touch panel is high. Moreover, since the conductive layer contains no binder resin, the surface resistance of the touch panel is small. Therefore, the operability of the touch panel is excellent.
  • the touch panel was excellent in heat resistance.
  • Electrode diagram of resistive touch panel (top view) Electrode diagram of resistive touch panel (side view) Resistive touch panel configuration (top view) Resistive touch panel configuration (side view) Configuration diagram of capacitive touch panel
  • the present invention is a touch panel.
  • a resistive film type touch panel has a structure in which the conductive layers in the electrode substrate are arranged so as to face each other. That is, the two electrode substrates are arranged to face each other so that there is a gap between them.
  • one electrode substrate may be an electrode substrate having the structure of the present invention.
  • the two electrode substrates may be electrode substrates having the structure of the present invention.
  • the greatest feature of the present invention is the electrode substrate constituting the touch panel.
  • This electrode substrate has a conductive layer (transparent conductive layer) 12 provided on a substrate (transparent substrate) 11 as shown in FIG.
  • the conductive layer 12 is configured without using a binder resin.
  • single-walled carbon nanotubes constituting the conductive layer have a structure in which the single-walled carbon nanotubes are intertwined with each other.
  • the single-walled carbon nanotubes are in direct contact with each other. Therefore, since there is no intervening insulator, the conductivity is good.
  • the single-walled carbon nanotubes are entangled with each other, no binder resin is required for the conductive layer. If the surface of the conductive layer is observed with a scanning electron microscope, it can be confirmed / determined whether the single-walled carbon nanotubes are intertwined.
  • the conductive layer 12 may be a conductive layer composed only of entangled single-walled carbon nanotubes. However, it is particularly preferable that the conductive layer 12 has fullerene (in the present specification, “fullerene” includes “fullerene analog”, and the same shall apply hereinafter). Especially, it is a case where the conductive layer 12 has a fullerene hydroxide. That is, heat resistance was improved by including fullerene, particularly, fullerene hydroxide. Also, the conductivity was excellent.
  • the fullerene may be any fullerene.
  • C60, C70, C76, C78, C82, C84, C90, C96 etc. are mentioned.
  • a mixture of plural kinds of fullerenes may be used.
  • C60 is particularly preferable from the viewpoint of dispersion performance.
  • C60 is easy to obtain.
  • not only C60 but also a mixture of C60 and another kind of fullerene (for example, C70) may be used.
  • the metal atom may be included in the fullerene.
  • Examples of the fullerene analog include those containing a functional group (for example, a functional group such as OH group, epoxy group, ester group, amide group, sulfonyl group, ether group).
  • fullerene having an OH group (hydroxyl group) (fullerene hydroxide) is preferable. This is because the dispersibility when coating single-walled carbon nanotubes as a dispersion was high. In addition, when there is little quantity of a hydroxyl group, the dispersibility improvement degree of a single-walled carbon nanotube will fall. On the other hand, if too much, synthesis is difficult. Accordingly, the amount of OH groups is preferably 5 to 30 per molecule of fullerene. In particular, 8 to 15 are preferable.
  • the amount of fullerene is preferably 10 to 1000 parts by mass (particularly 20 parts by mass or more and 100 parts by mass or less) with respect to 100 parts by mass of single-walled carbon nanotubes.
  • the single-walled carbon nanotube used in the present invention may be a single-walled carbon nanotube obtained by a known production method. For example, what was obtained by manufacturing methods, such as an arc discharge method, a chemical vapor deposition method, and a laser evaporation method, can be used. However, single-walled carbon nanotubes obtained by a production method using arc discharge are preferable from the viewpoint of crystallinity. And this thing is also easily available.
  • the single-walled carbon nanotube is preferably a single-walled carbon nanotube subjected to acid treatment.
  • the acid treatment is performed by immersing single-walled carbon nanotubes in an acidic liquid.
  • a technique called spraying may be employed instead of immersion.
  • Various kinds of acidic liquids are used.
  • an inorganic acid or an organic acid is used.
  • inorganic acids are preferred.
  • nitric acid, hydrochloric acid, sulfuric acid, phosphoric acid, or a mixture thereof can be used.
  • acid treatment using nitric acid or a mixed acid of nitric acid and sulfuric acid is preferable.
  • Preferable acid treatment conditions are conditions in which the reaction is carried out at a temperature of 80 ° C.
  • the single-walled carbon nanotube is preferably a single-walled carbon nanotube in which impurities are removed by filtration and purity is improved. This is because a decrease in conductivity and a decrease in light transmittance due to impurities are prevented.
  • Various methods are employed for filtration. For example, suction filtration, pressure filtration, cross flow filtration and the like are used. Among these, from the viewpoint of scale-up, it is preferable to employ cross flow filtration using a hollow fiber membrane.
  • the electrode substrate of the touch panel of the present invention preferably has a protective layer 13 on the conductive layer 12 made of single-walled carbon nanotubes.
  • a protective layer 13 there is no particular limitation on the material used for the protective layer 13.
  • a thermoplastic resin such as a polyester resin, a cellulose resin, a polyvinyl alcohol resin, a vinyl resin, a cycloolefin resin, a polycarbonate resin, an acrylic resin, or an ABS resin is used.
  • well-known coating materials such as a photocurable resin and a thermosetting resin, can also be used.
  • the material of the protective layer is preferably the same (same system) material as the substrate from the viewpoint of adhesion.
  • the protective layer 13 is also preferably a polyester resin.
  • the film thickness of the protective layer 13 is too thick, the contact resistance of a transparent conductive layer will become large. On the contrary, if the thickness of the protective layer 13 is too thin, the effect as the protective layer cannot be obtained. Therefore, the thickness of the protective layer 13 is preferably 1 nm to 1 ⁇ m. In particular, 10 nm or more is preferable. Moreover, 100 nm or less is preferable.
  • the resistive touch panel of the present invention two electrode substrates are required. One is an electrode substrate on the touch surface side called an upper electrode. The other is an electrode substrate (referred to as a lower substrate) disposed on the liquid crystal display side. In the capacitive touch panel, one electrode substrate may be used. A glass plate is generally used as the transparent substrate 11 of the electrode substrate. However, the transparent substrate 11 may be a resin plate, a resin sheet, or a resin film. A shield layer for noise removal may be provided on the surface opposite to the conductive layer 12.
  • the electrode substrate is preferably in the form of a sheet or film having a total light transmittance of 80% to 100%. That is, a flexible transparent substrate is preferable. There are no particular restrictions on the material of the transparent substrate.
  • thermoplastic resins such as polyester resin, cellulose resin, polyvinyl alcohol resin, vinyl chloride resin, cycloolefin resin, polycarbonate resin, acrylic resin, ABS resin, or photocurable resin
  • a thermosetting resin or the like is used.
  • the thickness of the transparent substrate 11 depends on the application. When a sheet shape is required, it is about 500 ⁇ m to 10 mm. When a film shape is required, it is about 10 ⁇ m to 500 ⁇ m.
  • both the upper substrate and the lower substrate may be in the form of a sheet or film.
  • One may be a sheet and the other may be a film.
  • the conductive layers of both electrode substrates may be conductive layers made of single-walled carbon nanotubes. Only the conductive layer of one electrode substrate may be a conductive layer made of single-walled carbon nanotubes. This is because an electrode substrate made of single-walled carbon nanotubes has a low contact resistance with a ceramic conductive layer such as indium tin oxide. Therefore, even if the conductive layer of one electrode substrate is a ceramic conductive layer, good operability as a touch panel can be secured.
  • the electrode substrate is preferably a substrate with minute irregularities and subjected to so-called anti-Newton treatment.
  • the electrode substrate used for the resistive touch panel is preferably a substrate that has been subjected to anti-Newtonian treatment with fine irregularities on one or both of the upper substrate and the lower substrate.
  • the upper substrate may be a substrate on which one or both sides of the substrate are subjected to a hard coat treatment for protecting the substrate, an antireflection treatment for improving visibility, and / or an anti-fingerprint treatment.
  • the lower substrate may be one in which a conductive layer is laminated on the outermost substrate of the liquid crystal display.
  • the electrode substrate preferably has a total light transmittance of 60% or more and 100% or less.
  • the surface resistance value is preferably 100 ⁇ / ⁇ or more and 50000 ⁇ / ⁇ or less. This is because the visibility decreases when the total light transmittance is too low.
  • the conductive layer comprised of single-walled carbon nanotubes has a trade-off relationship between the total light transmittance and the surface resistance value. Accordingly, the surface resistivity is preferably as high as the touch panel operates.
  • the total light transmittance is the total light transmittance including not only the conductive film containing single-walled carbon nanotubes but also the transparent substrate.
  • a transparent conductive film having a total light transmittance of 70% or more and a surface resistance value of 100 ⁇ / ⁇ to 5000 ⁇ / ⁇ is preferable.
  • a transparent conductive film having a total light transmittance of 60% or more and a surface resistance value of 100 ⁇ / ⁇ to 1000 ⁇ / ⁇ is preferable.
  • the resistive film type touch panel of the present invention it is preferable that dot printing is performed on any conductive layer of the upper electrode and the lower electrode. This prevents erroneous contact between the conductive layers.
  • the resistive film type touch panel of the present invention can be manufactured by the following steps (preferably in the order of steps 1 to 7).
  • Step 1 Step of obtaining crude carbon nanotube
  • Step 2 Step of acid treatment of crude carbon nanotube
  • Step 3 Step of filtering single-walled carbon nanotube obtained in Step 2
  • Step 4 Single-walled carbon nanotube, fullerene, and solvent Is a process in which ultrasonic irradiation is performed (mixing / dispersing process)
  • Step 5 Step of applying the single-walled carbon nanotube dispersion obtained in Step 4 on the substrate
  • Step 6 Step of forming wiring on the electrode substrate obtained in Step 5
  • Step 7 Obtained electrode substrate Where the layers are bonded so that the conductive layers are in contact with each other
  • Step 1 A known method can be adopted for step 1.
  • any manufacturing method such as an arc discharge method, a chemical vapor phase method, or a laser evaporation method may be used.
  • the production method by the arc discharge method is most preferable from the viewpoint of the crystallinity of carbon nanotubes and the availability.
  • Step 2 is a step in which single-walled carbon nanotubes are heated in an acidic liquid.
  • acidic liquids There are no particular restrictions on acidic liquids. However, it is preferable to use inorganic acids such as nitric acid, hydrochloric acid, sulfuric acid, phosphoric acid, and mixtures thereof.
  • nitric acid or a mixed acid of nitric acid and sulfuric acid is preferably used for the acid treatment before the alkali treatment. It is preferable to react with such an acid at a temperature of 80 to 100 ° C. for 1 to 7 days.
  • Step 3 is a step in which impurities such as carbon particles are removed.
  • impurity particles having a diameter of about 20 nm and carbon nanotube bundles are dispersed (or precipitated) in the solution in a separated state.
  • the impurities are removed by filtration using a filter having a pore size larger than the impurities and smaller than the bundle of carbon nanotubes.
  • Various filtration methods can be employed as the filtration method. For example, suction filtration, pressure filtration, cross flow filtration, or the like can be used. Among these, from the viewpoint of scale-up, it is preferable to employ cross flow filtration using a hollow fiber membrane.
  • Step 4 is a step of producing a dispersion of single-walled carbon nanotubes.
  • the ratio of single-walled carbon nanotubes to fullerenes is preferably 10 to 1000 parts by weight of fullerenes per 100 parts by weight of single-walled carbon nanotubes.
  • the fullerene concentration is preferably 1 to 100,000 ppm.
  • the fullerene is particularly preferably a fullerene having an OH group.
  • Various methods can be employed for the irradiation of ultrasonic waves. For example, a bath type ultrasonic irradiator or a chip type ultrasonic irradiator can be used.
  • a chip-type ultrasonic irradiator As the solvent, a solvent used in general paints is used. However, a solvent having a boiling point of 200 ° C. or lower (preferably lower limit is 25 ° C., further 30 ° C.) is preferable.
  • the low boiling point solvent is preferred because it is easy to dry after coating. Specifically, water, alcohol (for example, alcohol such as methanol, ethanol, normal propanol, and isopropanol (particularly, alcohol having 7 or less carbon atoms, particularly aliphatic alcohol)), or a mixture thereof is preferable. It is done.
  • ketone compounds eg, acetone, methyl ethyl ketone, methyl isobutyl ketone, cyclohexanone, etc.
  • ester compounds eg, methyl acetate, ethyl acetate, butyl acetate, ethyl lactate, methoxyethyl acetate, etc.
  • ether compounds For example, diethyl ether, ethylene glycol dimethyl ether, ethyl cellosolve, butyl cellosolve, phenyl cellosolve, dioxane etc.), aromatic compounds (eg toluene, xylene etc.), aliphatic compounds (eg pentane, hexane etc.), halogenated hydrocarbons (eg For example,
  • Step 5 is a step in which a conductive layer is formed on the substrate. Specifically, this is a step in which the dispersion liquid is applied onto a transparent substrate by a desired application method (for example, spray coating, bar coating, roll coating, ink jet method, screen coating, etc.). If necessary, drying is performed after the coating step in order to remove the solvent contained in the coating film.
  • a drying device for example, a heating furnace, a far infrared furnace, a super far infrared furnace, or the like is used for drying. Further, the substrate is cleaned as necessary.
  • step 6 a method of printing a conductive material on a substrate is usually used. There may be a step of providing dot spacers before or after step 6.
  • Step 7 A touch panel is produced by Step 7 in which the conductive layers of the obtained electrode substrate are bonded to each other.
  • the electrode substrates may be an electrode substrate having a conductive layer made of single-walled carbon nanotubes.
  • the capacitive touch panel of the present invention can be manufactured by the following steps (preferably in the order of steps 8 to 13).
  • Step 8 Step of obtaining crude carbon nanotube
  • Step 9 Step of treating crude carbon nanotube with acid
  • Step 10 Step of filtering single-walled carbon nanotube obtained in Step 9
  • Step 11 Single-walled carbon nanotube, fullerene, and solvent
  • Step 12 Step of applying the single-walled carbon nanotube dispersion obtained in Step 11 on the substrate
  • Step 13 Wiring is formed on the electrode substrate obtained in Step 12
  • Steps to be formed Steps 8 to 11 can be performed in accordance with the steps 1 to 4 described above.
  • the electrode substrate used in step 12 may be provided with a shield layer for noise removal on the surface opposite to the surface on which the conductive layer is formed.
  • Example 1 Single-walled carbon nanotubes produced by the arc discharge method were treated with acid (treated with 63% nitric acid at 85 ° C. for 2 days (reaction)). Thereafter, filtration was performed, and single-walled carbon nanotubes were purified and recovered.
  • This single-walled carbon nanotube dispersion was bar-coated with a wet film thickness of 20 ⁇ m on a PET film (trade name: Cosmo Shine A4100, manufactured by Toyobo Co., Ltd.). Then, drying for 3 minutes was performed at 80 degreeC, and the transparent conductive layer was formed.
  • the single-walled carbon nanotubes in the transparent conductive layer were intertwined with each other. And in this entangled location, the single-walled carbon nanotubes were in direct contact with each other. Of course, the single-walled carbon nanotubes were in direct contact with each other even at the places where they were not entangled.
  • the conductive layer had a hydroxyl group-containing fullerene. However, binder resin is not included.
  • Example 2 An electrode substrate was obtained in the same manner as in Example 1 except that the single-walled carbon nanotube dispersion obtained in Example 1 was applied a plurality of times so that the surface resistance was 400 ⁇ / ⁇ .
  • Example 3 An electrode substrate was obtained in the same manner as in Example 1 except that the amount of single-walled carbon nanotubes added was reduced and coating was performed so that the surface resistance was 5000 ⁇ / ⁇ .
  • Example 4 The electrode substrate obtained in Example 1 was immersed in a solution obtained by diluting acrylic resin (trade name Watersol S-707-IM) with 2-propanol so that the solid content concentration was 1% by mass, and a transparent conductive layer An acrylic resin-based protective layer (wet film thickness 10 nm) was provided thereon.
  • acrylic resin trade name Watersol S-707-IM
  • Keystroke test The electrode substrate was subjected to the keystroke test under the conditions (3R silicon rubber, load 250 g, frequency 10 Hz (10 times per second), voltage 3 V).
  • Sliding writing test The electrode substrate was subjected to the sliding writing test under the conditions (polyacetal pen, load 250 g, writing katakana character (20 ⁇ 20 mm)).
  • Limit curvature radius An electrode substrate is wound around a rod having a certain radius. Then, the surface resistance was measured by the two-terminal method while pulling with a constant load. The radius at which the surface resistance value suddenly increased was defined as the critical curvature radius.
  • Touch panel operability The obtained electrode substrate was the upper electrode, and the glass with ITO was the lower substrate.
  • a copper foil sheet was stretched on two opposite sides to form a counter electrode (see FIGS. 2 and 3).
  • the upper electrode substrate and the lower electrode substrate were laminated so that the counter electrodes were orthogonal to each other, and a resistive film type touch panel was manufactured (see FIGS. 4 and 5).
  • the case where the resistance value of the lower electrode substrate changes is assumed to be a case of operating as a touch panel.
  • a case where the operability was good was indicated by a circle, and a case where the operability was poor was indicated by a cross.
  • the comparative example 2 is a PET film with ITO (Toyobo Co., Ltd.) * "Surface resistance value *" is the value measured after leaving the electrode substrate in an oven at 80 ° C for 10 days.
  • Example 5 The single-walled carbon nanotube dispersion obtained in Example 1 was bar-coated with a wet film thickness of 20 ⁇ m on a polycarbonate substrate with anti-Newton treatment. Then, drying for 3 minutes was performed at 80 degreeC, and the transparent conductive layer was formed. Thereafter, the coated surface was washed with methanol to obtain an electrode substrate.
  • the electrode substrate thus obtained was used as the lower substrate, the PET film with ITO was used as the upper substrate, and a resistive film type touch panel was produced in the same manner as described above. And when the upper board
  • Example 6 The electrode substrates obtained in Example 1 and Example 2 were used as an upper substrate and a lower substrate, respectively, and resistive film type touch panels were produced in the same manner as described above. And when the upper board
  • Example 7 The single-walled carbon nanotube dispersion obtained in Example 1 was bar-coated on a polycarbonate substrate with a wet film thickness of 50 ⁇ m. Then, drying for 3 minutes was performed at 80 degreeC, and the transparent conductive layer was formed. And the coating surface was wash

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Position Input By Displaying (AREA)
  • Non-Insulated Conductors (AREA)

Abstract

L'invention porte sur un panneau tactile qui n'est pas facilement endommagé, même lorsqu'il est courbé afin d'avoir un petit rayon de courbure (durabilité mécanique élevée) et qui a une faible résistance de surface (opérabilité supérieure). Le panneau tactile est construit à l'aide d'un substrat d'électrode ayant une couche de conduction électrique disposée sur un substrat. La couche de conduction électrique disposée sur le substrat n'utilise pas une résine de liant et est construite à partir de nanotubes de carbone sur une seule couche entrelacés, et la couche de conduction électrique construite à partir des nanotubes de carbone sur une seule couche comprend des fullerènes.
PCT/JP2009/059157 2008-05-24 2009-05-19 Panneau tactile Ceased WO2009145080A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2010514443A JP5519497B2 (ja) 2008-05-24 2009-05-19 タッチパネル

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Application Number Priority Date Filing Date Title
JP2008136118 2008-05-24
JP2008-136118 2008-05-24

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WO2009145080A1 true WO2009145080A1 (fr) 2009-12-03

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PCT/JP2009/059157 Ceased WO2009145080A1 (fr) 2008-05-24 2009-05-19 Panneau tactile

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JP (1) JP5519497B2 (fr)
TW (1) TW201003191A (fr)
WO (1) WO2009145080A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012069515A (ja) * 2010-08-25 2012-04-05 Toray Ind Inc 透明導電積層体およびその製造方法
JP2013053241A (ja) * 2011-09-05 2013-03-21 Kuraray Co Ltd 積層体
JP2014081355A (ja) * 2012-09-28 2014-05-08 Bando Chem Ind Ltd 静電容量型センサシート及び静電容量型センサシートの製造方法
CN104880863A (zh) * 2015-06-30 2015-09-02 厦门天马微电子有限公司 区域化偏光结构及其制作方法、液晶显示面板
JP2017138994A (ja) * 2016-01-20 2017-08-10 東洋紡株式会社 透明導電性フィルム

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005255985A (ja) * 2001-03-26 2005-09-22 Eikos Inc カーボンナノチューブ含有コーティングフィルム
WO2006028131A1 (fr) * 2004-09-10 2006-03-16 Gunze Co., Ltd. Ecran tactile et procede de fabrication de materiau de film pour ecran tactile
US20060274048A1 (en) * 2005-06-02 2006-12-07 Eastman Kodak Company Touchscreen with conductive layer comprising carbon nanotubes
WO2006132254A1 (fr) * 2005-06-07 2006-12-14 Kuraray Co., Ltd. Liquide de dispersion à base de nanotube de carbone et film conducteur transparent utilisant celui-ci

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4207398B2 (ja) * 2001-05-21 2009-01-14 富士ゼロックス株式会社 カーボンナノチューブ構造体の配線の製造方法、並びに、カーボンナノチューブ構造体の配線およびそれを用いたカーボンナノチューブデバイス
JP2005142088A (ja) * 2003-11-07 2005-06-02 Dainippon Printing Co Ltd 色素増感型太陽電池用電極基板及び色素増感型太陽電池
JP4805820B2 (ja) * 2004-05-13 2011-11-02 国立大学法人北海道大学 微小カーボン分散物
US7535462B2 (en) * 2005-06-02 2009-05-19 Eastman Kodak Company Touchscreen with one carbon nanotube conductive layer

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005255985A (ja) * 2001-03-26 2005-09-22 Eikos Inc カーボンナノチューブ含有コーティングフィルム
WO2006028131A1 (fr) * 2004-09-10 2006-03-16 Gunze Co., Ltd. Ecran tactile et procede de fabrication de materiau de film pour ecran tactile
US20060274048A1 (en) * 2005-06-02 2006-12-07 Eastman Kodak Company Touchscreen with conductive layer comprising carbon nanotubes
WO2006132254A1 (fr) * 2005-06-07 2006-12-14 Kuraray Co., Ltd. Liquide de dispersion à base de nanotube de carbone et film conducteur transparent utilisant celui-ci

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012069515A (ja) * 2010-08-25 2012-04-05 Toray Ind Inc 透明導電積層体およびその製造方法
JP2013053241A (ja) * 2011-09-05 2013-03-21 Kuraray Co Ltd 積層体
JP2014081355A (ja) * 2012-09-28 2014-05-08 Bando Chem Ind Ltd 静電容量型センサシート及び静電容量型センサシートの製造方法
CN104880863A (zh) * 2015-06-30 2015-09-02 厦门天马微电子有限公司 区域化偏光结构及其制作方法、液晶显示面板
US10429691B2 (en) 2015-06-30 2019-10-01 Xiamen Tianma Micro-Electronics Co., Ltd. Regional polarization structure, method for fabricating regional polarization structure and liquid crystal display panel
JP2017138994A (ja) * 2016-01-20 2017-08-10 東洋紡株式会社 透明導電性フィルム

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