JP2009282865A - Transparent electrode substrate for touch panel and touch panel - Google Patents

Transparent electrode substrate for touch panel and touch panel Download PDF

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Publication number
JP2009282865A
JP2009282865A JP2008136117A JP2008136117A JP2009282865A JP 2009282865 A JP2009282865 A JP 2009282865A JP 2008136117 A JP2008136117 A JP 2008136117A JP 2008136117 A JP2008136117 A JP 2008136117A JP 2009282865 A JP2009282865 A JP 2009282865A
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Prior art keywords
touch panel
conductive layer
transparent
transparent conductive
electrode substrate
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JP2008136117A
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Japanese (ja)
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Takahiro Kitano
Yuji Mitani
雄二 三谷
高広 北野
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Kuraray Co Ltd
Touch Panel Kenkyusho:Kk
株式会社クラレ
株式会社タッチパネル研究所
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Abstract

<P>PROBLEM TO BE SOLVED: To provide an electrode substrate for a touch panel which consumes small power, produces less noise, and has great mechanical strength, and high durability. <P>SOLUTION: In a transparent electrode substrate for a touch panel in which a transparent conductive layer is provided on a transparent board, a surface resistance value on the transparent conductive layer ranges between 5500 Ω/square and 10,000 Ω/square. The transparent conductive layer does not use binder resin but is composed of an intertwined single layer carbon nanotube. Also, the transparent conductive layer has a fullerene. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a transparent electrode substrate for a touch panel and a touch panel.

  Currently, a touch panel is known as a device that can input information by directly touching a display. In this configuration, an input device that transmits light is arranged on various displays such as a liquid crystal screen. As a typical example of this type, a touch panel in which two transparent electrode substrates are arranged so that transparent electrode layers face each other, a so-called resistance film type touch panel is known.

  For example, in a touch panel in which a transparent thin film electrode is provided on one surface of each of two transparent insulating substrates, and the same pair of transparent thin film electrodes are arranged to face each other via an insulating spacer, the substrate on the pressing side is: It consists of a transparent conductive film, and the transparent thin film electrode of the same substrate is provided with a silicon oxide thin film layer having a thickness of 100 to 600 mm on the transparent film, and further has a surface resistance value of 0.5 to 10 kΩ / □ on the thin film layer. A pen input touch panel characterized by providing an indium tin oxide thin film layer has been proposed (JP-A-8-64067). However, the surface resistance value of the indium tin oxide thin film layer is widely defined as 0.5 to 10 kΩ / □ in the claims, but is 700 to 1000Ω / □. It is shown that it is not preferable when the surface resistance value exceeds 1000Ω / □.

  A transparent conductive substrate is also used as a touch panel substrate and a cell substrate, characterized in that a transparent conductive layer is provided on both sides of the transparent resin substrate. The transparent resin substrate is made of an epoxy-based resin and has a surface resistance of 100 on one side. A transparent conductive substrate has been proposed (Japanese Patent Laid-Open No. 8-272530) that has a resistance of ˜1000Ω / □ and that of the other surface is 100Ω / □ or less.

The transparent and the polymer film, on its one side, indium oxide containing 3-8 wt% of tin oxide (SnO 2) (In 2 O 3) - a transparent conductive formed of a sintered body of tin oxide (SnO 2) layer (1), indium oxide containing 10 to 30 wt% of tin oxide (SnO 2) (in 2 O 3) - sequentially laminated tin oxide transparent conductive layer made of a sintered body of (SnO 2) (2) The light transmittance at a wavelength of 550 nm is 80% or more, the surface resistance is 300 to 1000 Ω / □, and the rate of change in surface resistance after heating is 0.9 to 1.1. A characteristic transparent conductive film for a touch panel has been proposed (Japanese Patent Laid-Open No. 10-49306).
JP-A-8-64067 JP-A-8-272530 JP-A-10-49306 JP 2004-202948 A JP 2007-11997

  Now, resistive film type touch panels are increasingly used for mobile devices such as mobile phones and game machines. For this reason, a resistive touch panel used for portable devices is strongly required to have low power consumption.

  And in the said patent document 1, it is said that the power consumption decreased. In Patent Documents 2 and 3, etc., the point of power consumption is not mentioned.

  By the way, according to the study by the present inventor, the technique of Patent Document 1 still has a large amount of power consumption.

  In order to reduce power consumption, current consumption may be reduced. That is, the surface resistance value of the transparent electrode layer may be increased. When the surface resistance value is increased, there is an advantage that noise is reduced and the risk of malfunction is reduced.

  When the technique of Patent Document 1 is examined from such a viewpoint, it is said that the current consumption is still large in the case of a portable device when the surface resistance value is 1000Ω / □ or less, and the power consumption is low. It turns out that it cannot be said.

  Moreover, in patent document 1, the film thickness of the transparent conductive layer which consists of indium tin oxide is made thin. That is, the surface resistance value is controlled to 1000 Ω / □ or less by controlling the film thickness of the transparent conductive layer made of indium tin oxide. However, in such a technique, the mechanical strength of the transparent conductive layer made of indium tin oxide is insufficient, and the life of the touch panel is shortened.

  Therefore, the problem to be solved by the present invention is to provide an electrode substrate for a touch panel that has low power consumption, low noise, high mechanical strength, and high durability.

The above-mentioned problem is a transparent electrode substrate for a touch panel in which a transparent conductive layer is provided on a transparent substrate,
The surface resistance value on the transparent conductive layer is 5500Ω / □ to 10000Ω / □, which is solved by a transparent electrode substrate for a touch panel.

Also, a transparent electrode substrate for a touch panel in which a transparent conductive layer is provided on a transparent substrate,
This is solved by a transparent electrode substrate for a touch panel, wherein the surface resistance value on the transparent conductive layer is 3000Ω / □ to 10000Ω / □.

Also, a transparent electrode substrate for a touch panel in which a transparent conductive layer is provided on a transparent substrate,
This is solved by a transparent electrode substrate for a touch panel, wherein the surface resistance value on the transparent conductive layer is 1000Ω / □ to 10000Ω / □.

  Moreover, it is said transparent electrode substrate for touchscreens, Comprising: A transparent conductive layer is solved by the transparent electrode substrate for touchscreens comprised by the intertwined single-walled carbon nanotube. Further, the above-mentioned transparent electrode substrate for a touch panel is solved by the transparent electrode substrate for a touch panel, wherein the transparent conductive layer is composed of entangled single-walled carbon nanotubes without using a binder resin. .

  Moreover, it is said transparent electrode substrate for touchscreens, Comprising: A transparent conductive layer is solved with the transparent electrode substrate for touchscreens characterized by having fullerene. Moreover, it is a transparent electrode substrate for touch panels described above, wherein the transparent base material is plastic. In addition, the above-mentioned transparent electrode substrate for a touch panel, which has a total light transmittance of 80% or more and 100% or less, is solved.

  The present invention also provides a touch panel comprising the above-described transparent electrode substrate for a touch panel. In particular, the present invention provides a touch panel comprising the above-described transparent electrode substrate for a touch panel as a lower electrode.

  The touch panel constituted by using the transparent electrode substrate for a touch panel of the present invention has high mechanical strength (dynamic strength) of the transparent electrode substrate, and therefore has high durability. And since power consumption is small, it is very suitable for the touch panel of a portable apparatus. Furthermore, there is little noise and malfunctions are unlikely to occur, and the reliability is high. In addition, the touch panel has good operability.

  The present invention is a transparent electrode substrate for a touch panel in which a transparent conductive layer is provided on a transparent substrate. And the surface resistance value on the said transparent conductive layer is comprised so that it may be 5500 ohm / square-10000 ohm / square. Furthermore, it is comprised so that it may be 3000 ohms / square-10000 ohms / square. In particular, it is configured to be 1000Ω / □ to 10000Ω / □. The transparent conductive layer is particularly composed of intertwined single-walled carbon nanotubes. Among them, it is composed of entangled single-walled carbon nanotubes without using a binder resin. Since no binder resin is used, the single-walled carbon nanotubes constituting the conductive layer have a structure in which the single-walled carbon nanotubes are intertwined with each other. As a result, the single-walled carbon nanotubes are in direct contact with each other. Therefore, since there is no intervening insulator, the conductivity is good. And since it is intertwined, binder resin is made unnecessary for the structure of a conductive layer. Here, whether or not the single-walled carbon nanotubes are intertwined can be confirmed by observing the surface of the conductive layer with a scanning electron microscope. Preferably, the transparent conductive layer has fullerene. The transparent substrate is particularly plastic. The total light transmittance is 80% or more and 100% or less.

  The layer structure of the transparent electrode substrate of the present invention is basically a transparent conductive layer laminated on a substrate. For example, the structure of a base material / hard coat layer / antireflection layer / transparent conductive layer / protective layer, or a base material / anti-Newton layer / transparent conductive layer can be given as an example. Of course, it is not limited to this. The antireflection layer may be a single layer, or may be composed of two or more layers. In addition, a known functional layer such as an antireflection layer, a hard coat layer, an antifouling layer, or an antiglare layer may be laminated on the opposite surface of the substrate. Further, an anti-fingerprint processing layer may be provided.

  If the transparent base material used by this invention is a transparent base material, there will be no special restriction | limiting. However, a sheet or film having a total light transmittance of 80% to 100% is preferable. There are no particular restrictions on the material. For example, ceramic such as glass may be used. In addition, thermoplastic resins such as polyester resin, cellulose resin, vinyl alcohol resin, vinyl chloride resin, cycloolefin resin, polycarbonate resin, acrylic resin, and ABS resin are also used. Moreover, a photocurable resin, a thermosetting resin, or the like is also used. The preferable range of the thickness of the transparent substrate is determined depending on the application. When a sheet is required, the thickness is 500 μm to 10 mm. When a film-like thing is calculated | required, it is 10 micrometers-500 micrometers in thickness.

  The electrode substrate according to the present invention has a total light transmittance of 60% or more and 100% or less. Preferably, it is 80% or more. Furthermore, it is 90% or more. This is because the visibility decreases when the total light transmittance is too low.

  The transparent conductive layer of the present invention has a surface resistance value of 5500Ω / □ to 10000Ω / □. More preferably, it is 3000Ω / □ to 10000Ω / □. Particularly preferably, it is 1000Ω / □ to 10000Ω / □. Note that the conductive layer composed 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. Here, the total light transmittance is the total light transmittance including not only the conductive layer containing single-walled carbon nanotubes but also the substrate.

  The single-walled carbon nanotube constituting the transparent conductive layer of the present invention may be a single-walled carbon nanotube obtained by a known production method. For example, what was obtained by the manufacturing method by an arc discharge method, a chemical vapor deposition method, a laser evaporation method, etc. can be used. However, from the viewpoint of crystallinity, those obtained by a production method using arc discharge are preferable. And this thing is also easily available. The single-walled carbon nanotube is preferably subjected to acid treatment. Here, the acid treatment is performed by immersing single-walled carbon nanotubes in an acidic liquid. A technique called spraying can be used instead of immersion. Various acidic liquids can be used as long as they are known compounds. For example, an inorganic acid or an organic acid is used. However, it is preferable to use an inorganic acid. For example, nitric acid, hydrochloric acid, sulfuric acid, phosphoric acid, or a mixture thereof can be used. Among these, 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 performed at a temperature of 80 ° C. to 100 ° C. for 1 day to 7 days. And when this single-walled carbon nanotube and carbon microparticles are physically bonded via amorphous carbon by this acid treatment, they can be separated by decomposing amorphous carbon, The fine particles of the used metal catalyst will be decomposed. Therefore, in the present invention, acid treatment of single-walled carbon nanotubes is preferable. For example, the conductivity is improved as compared with the case where acid treatment is not performed. It is preferable that the single-walled carbon nanotube used in the present invention has an improved purity by removing impurities by filtration. This is because a decrease in conductivity and a decrease in light transmittance due to impurities are prevented. Various methods can be used for filtration. For example, suction filtration, pressure filtration, cross flow filtration, or the like can be used. Among these, from the viewpoint of scale-up, cross flow filtration using a hollow fiber membrane is preferable.

  The conductive layer of the present invention may be composed only of entangled single-walled carbon nanotubes. However, it is particularly preferable that the conductive layer has fullerene (in the present specification, the term fullerene includes a fullerene analog. The same shall apply hereinafter). Among them, it is to have fullerene hydroxide. That is, heat resistance improves by including fullerene. Also, the conductivity was excellent. The fullerene used in the present invention may be any fullerene. For example, C60, C70, C76, C78, C82, C84, C90, C96 etc. are mentioned. Of course, a mixture of these fullerenes may be used. C60 is particularly preferable from the viewpoint of dispersion performance. Furthermore, C60 has an advantage that it is easily available. Further, not only C60 but also a mixture of C60 and another kind of fullerene (for example, C70) may be used. Further, metal atoms may be appropriately included in the fullerene. Examples of fullerene analogues include those containing a known functional group such as a hydroxyl group, an epoxy group, an ester group, an amide group, a sulfonyl group, an ether group, phenyl-C61-propyl acid alkyl ester, and phenyl-C61-butyric acid alkyl. Examples thereof include esters and hydrogenated fullerenes. Among them, fullerenes having an OH group (hydroxyl group) (fullerene hydroxide) are preferable. This is because the dispersibility when coating single-walled carbon nanotubes as a dispersion was high. If the amount of hydroxyl groups is small, the degree of improvement in dispersibility of the single-walled carbon nanotubes decreases. Conversely, if the amount is too large, synthesis is difficult. Accordingly, the amount of hydroxyl groups is preferably 5 to 30 per molecule of fullerene. In particular, 8 to 15 are preferable. If the amount of fullerene added is too large, the conductivity is lowered. Conversely, if the amount is too small, the effect is poor. Therefore, the amount of fullerene is preferably 10 to 1000 parts by mass with respect to 100 parts by mass of the single-walled carbon nanotube. In particular, the amount is preferably 20 to 100 parts by mass with respect to 100 parts by mass of the single-walled carbon nanotube.

  The electrode substrate of the present invention preferably has a protective layer on a conductive layer made of single-walled carbon nanotubes. There are no particular restrictions on the material used for this protective layer. For example, 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. Moreover, well-known coating materials, such as a photocurable resin and a thermosetting resin, can also be used. However, the material of the protective layer is preferably the same (same system) material as the transparent substrate from the viewpoint of adhesion. For example, when the base material is a polyester resin, the protective layer is also preferably a polyester resin. If the protective layer is too thick, the contact resistance of the transparent conductive layer is increased. Conversely, if the protective layer is too thin, the effect as the protective layer cannot be obtained. Accordingly, the thickness of the protective layer is preferably 1 nm to 1 μm. In particular, it is preferably 10 nm or more. Moreover, it is preferable that it is 100 nm or less.

  The transparent electrode substrate of the present invention is used, and in particular, a resistive film type touch panel (a touch panel in which conductive layers are arranged so as to face each other) is configured. In particular, a resistive film type touch panel is formed by being used for the lower electrode. When the transparent electrode substrate of the present invention is used to form a touch panel, the upper electrode may be an electrode substrate having a ceramic conductive layer such as indium tin oxide. This is because a conductive layer made of single-walled carbon nanotubes has a low contact resistance with a ceramic conductive layer such as indium tin oxide, and good operability as a touch panel can be secured. Of course, the conductive layers of both the upper electrode and the lower electrode may be composed of the entangled single-walled carbon nanotubes of the present invention. In the resistive touch panel of the present invention, it is preferable that dot printing is performed on the conductive layer of either the upper electrode or the lower electrode. This prevents erroneous contact between the conductive layers. In the resistive touch panel of the present invention, both the upper substrate and the lower substrate may be in the form of a sheet or film. Further, one may be a sheet and the other may be a film. Further, it is preferable that the substrate is subjected to so-called anti-Newton treatment in which fine irregularities are provided on at least one of the upper substrate and the lower substrate. Further, it is preferable that the upper substrate is subjected to a hard coat process or an antireflection process or an anti-fingerprint process for improving visibility for protecting both sides of the substrate. The lower substrate may be one in which the conductive layer is laminated on the outermost substrate of the liquid crystal display.

  Hereinafter, more specific description will be given.

[Example 1]
Single-walled carbon nanotubes produced by the arc discharge method were reacted with 63% nitric acid at 85 ° C. for 2 days. And it filtered and refine | purified and collect | recovered the single-walled carbon nanotube. Single-walled carbon nanotubes obtained as described above, hydroxyl group-containing fullerene (trade name: Nanomuspectra D-100 Frontier Carbon), sodium hydroxide (Wako Pure Chemical Industries), water, 2- Propanol was mixed. Then, this mixed solution was irradiated with ultrasonic waves (apparatus name: ULTRASONIC HOMOGENIZER MODEL UH-600SR, manufactured by SMT) to obtain a single-walled carbon nanotube dispersion. The obtained single-walled carbon nanotube dispersion was bar-coated on a polyester film (trade name: Cosmo Shine A4100, manufactured by Toyobo Co., Ltd.) with a wet film thickness of 20 μm. And it was made to dry for 3 minutes at 80 degreeC. Further, the surface was washed with methanol and dried at 80 ° C. for 3 minutes to obtain a transparent conductive substrate having a surface resistance value of 6000Ω / □ of the conductive layer.

  According to the observation with a scanning electron microscope, the single-walled carbon nanotubes in the transparent conductive layer are intertwined with each other, and the single-walled carbon nanotubes are in direct contact with each other at the intertwined portions. Met. 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 has a hydroxyl group-containing fullerene. However, the binder resin is not included.

  Further, when the total light transmittance of the transparent conductive substrate was examined with a direct reading haze computer (manufactured by Suga Test Instruments Co., Ltd.), it was 87% and the haze was 1.0%. In addition, the electrode substrate is wound around a rod with a constant radius, the surface resistance is measured by the two-terminal method while pulling at a constant load, and the radius at which the surface resistance value suddenly increases is defined as the critical curvature radius. Was 2 mm or less.

  The transparent electrode substrate was used as the lower electrode, and the glass with ITO was used as the upper electrode, and the copper foil sheets were stretched on the two opposite sides to form the counter electrode (see FIGS. 1 and 2). And it bonded so that the counter electrode of an upper electrode board | substrate and a lower electrode board | substrate might be orthogonal, and produced the resistive film type touch panel (refer FIG.3, 4).

[Example 2]
The same procedure was carried out except that a transparent conductive substrate having a surface resistance value of 7000 Ω / □ was obtained using a mixture of the components of the single-walled carbon nanotube dispersion in Example 1 with a different proportion.

[Example 3]
The same procedure was performed except that a transparent conductive substrate having a surface resistance value of 8000Ω / □ of the conductive layer was obtained by changing the blending ratio of the components of the single-walled carbon nanotube dispersion in Example 1.

[Comparative Example 1]
The same procedure was performed except that a transparent conductive substrate having a surface resistance value of 800 Ω / □ was obtained by changing the blending ratio of the components of the single-walled carbon nanotube dispersion in Example 1.

[Comparative Example 2]
The same procedure was performed except that a transparent conductive substrate having a surface resistance of 800 Ω / □ of a conductive layer made of ITO instead of single-walled carbon nanotubes was obtained as the transparent conductive layer.

[Characteristic]
Since the characteristics such as power consumption characteristics and durability of the touch panel obtained in each of the above examples were examined, the results are shown in Table 1.

Table-1
Power Consumption Characteristics Mechanical Strength Example 1 4.2 <2
Example 2 3.6 <2
Example 3 3.1 <2
Comparative Example 1 32.3 <2
Comparative Example 2 32.4 10
Power consumption characteristic: represents power consumption (mW) when 5 V (constant pressure) is applied.
Mechanical strength: represents a critical radius of curvature (mm).

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)

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Electrode substrate 2 Counter electrode 3 Upper counter electrode 4 Upper electrode substrate 5 Lower counter electrode 6 Adhesive tape 7 Lower electrode substrate

Patent applicant Kuraray Co., Ltd.
Patent Applicant Touch Panel Research Institute
Representative Katsumi Udaka

Claims (8)

  1. A transparent electrode substrate for a touch panel in which a transparent conductive layer is provided on a transparent substrate,
    A transparent electrode substrate for a touch panel, wherein a surface resistance value on the transparent conductive layer is 5500Ω / □ to 10000Ω / □.
  2. A transparent electrode substrate for a touch panel in which a transparent conductive layer is provided on a transparent substrate,
    A transparent electrode substrate for a touch panel, wherein a surface resistance value on the transparent conductive layer is 3000Ω / □ to 10000Ω / □.
  3. A transparent electrode substrate for a touch panel in which a transparent conductive layer is provided on a transparent substrate,
    A transparent electrode substrate for a touch panel, wherein a surface resistance value on the transparent conductive layer is 1000Ω / □ to 10000Ω / □.
  4. The transparent electrode layer for a touch panel according to any one of claims 1 to 3, wherein the transparent conductive layer is composed of entangled single-walled carbon nanotubes.
  5. 4. The transparent electrode substrate for a touch panel according to claim 1, wherein the transparent conductive layer is composed of entangled single-walled carbon nanotubes without using a binder resin.
  6. 6. The transparent electrode substrate for a touch panel according to claim 1, wherein the transparent conductive layer has fullerene.
  7.   A touch panel comprising the transparent electrode substrate for a touch panel according to claim 1.
  8. A touch panel comprising the transparent electrode substrate for touch panel according to claim 1 as a lower electrode.
JP2008136117A 2008-05-24 2008-05-24 Transparent electrode substrate for touch panel and touch panel Pending JP2009282865A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009283376A (en) * 2008-05-24 2009-12-03 Kuraray Co Ltd Electrode base material and touch panel
JP2009295378A (en) * 2008-06-04 2009-12-17 Sony Corp Light transmissive conductor and its manufacturing method, electrostatic charge removing sheet, and electronic device
JP2013521554A (en) * 2010-03-05 2013-06-10 カナトゥ オイ Contact detection film and contact detection device

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002073280A (en) * 2000-08-30 2002-03-12 Nippon Sheet Glass Co Ltd Substrate for transparent touch panel and transparent touch panel
WO2005104141A1 (en) * 2004-04-20 2005-11-03 Takiron Co., Ltd. Touch panel-use transparent conductive molded product and touch panel
JP2007182546A (en) * 2005-12-06 2007-07-19 Mitsubishi Rayon Co Ltd Carbon nanotube-containing composition, composite and manufacturing process of those
WO2008013517A2 (en) * 2005-06-02 2008-01-31 Eastman Kodak Company Touchscreen with conductive layer comprising carbon nanotubes
WO2008026304A1 (en) * 2006-08-28 2008-03-06 Fujitsu Limited Carbon nanomaterial, method for producing the same, electronic member and electronic device
WO2008050794A1 (en) * 2006-10-25 2008-05-02 Kuraray Co., Ltd. Transparent conductive film, transparent electrode substrate and method for producing liquid crystal alignment film by using the same, and carbon nanotube and method for producing the same

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002073280A (en) * 2000-08-30 2002-03-12 Nippon Sheet Glass Co Ltd Substrate for transparent touch panel and transparent touch panel
WO2005104141A1 (en) * 2004-04-20 2005-11-03 Takiron Co., Ltd. Touch panel-use transparent conductive molded product and touch panel
WO2008013517A2 (en) * 2005-06-02 2008-01-31 Eastman Kodak Company Touchscreen with conductive layer comprising carbon nanotubes
JP2008542953A (en) * 2005-06-02 2008-11-27 イーストマン コダック カンパニー Touch screen having a conductive layer containing carbon nanotubes
JP2007182546A (en) * 2005-12-06 2007-07-19 Mitsubishi Rayon Co Ltd Carbon nanotube-containing composition, composite and manufacturing process of those
WO2008026304A1 (en) * 2006-08-28 2008-03-06 Fujitsu Limited Carbon nanomaterial, method for producing the same, electronic member and electronic device
WO2008050794A1 (en) * 2006-10-25 2008-05-02 Kuraray Co., Ltd. Transparent conductive film, transparent electrode substrate and method for producing liquid crystal alignment film by using the same, and carbon nanotube and method for producing the same

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009283376A (en) * 2008-05-24 2009-12-03 Kuraray Co Ltd Electrode base material and touch panel
JP2009295378A (en) * 2008-06-04 2009-12-17 Sony Corp Light transmissive conductor and its manufacturing method, electrostatic charge removing sheet, and electronic device
JP2013521554A (en) * 2010-03-05 2013-06-10 カナトゥ オイ Contact detection film and contact detection device
US9395851B2 (en) 2010-03-05 2016-07-19 Canatu Oy Touch sensitive film and a touch sensing device

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