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Transparent electroconductive laminate, method for manufacturing same, electronic paper using same, and touch panel using same

A technology of transparent conductive layer and conductive layer, which is applied in the direction of cable/conductor manufacturing, conductive layer on insulating carrier, carbon-silicon compound conductor, etc. It can solve the problem of poor stability of resistance value and reduced conductivity of carbon nanotube transparent conductive laminates, etc. question

Inactive Publication Date: 2014-09-24
TORAY IND INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, ionic dispersants are usually insulating substances, which reduce the conductivity of the carbon nanotube transparent conductive laminate. Not only that, but because they have ionic functional groups, they are easily affected by environmental changes such as high temperature and high humidity, and have a low resistance value. The problem of poor stability

Method used

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  • Transparent electroconductive laminate, method for manufacturing same, electronic paper using same, and touch panel using same
  • Transparent electroconductive laminate, method for manufacturing same, electronic paper using same, and touch panel using same
  • Transparent electroconductive laminate, method for manufacturing same, electronic paper using same, and touch panel using same

Examples

Experimental program
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preparation example Construction

[0059] In the preparation method of the transparent conductor of the present invention, an undercoat layer having a solid surface zeta potential in the range of +30 to −30 mV is provided on the transparent substrate. As a raw material of such an undercoat layer having a solid surface zeta potential in the range of +30 to −30 mV, it is preferable to use a raw material containing an inorganic oxide. In addition, the undercoat layer preferably has high hydrophilicity. Specifically, the hydrophilicity preferably has a water contact angle in the range of 5 to 25°. It is also preferable to use a raw material containing an inorganic oxide as a raw material of such an undercoat layer having a water contact angle on a solid surface in the range of 5 to 25°. It is preferable to contain raw materials of titanium dioxide, aluminum oxide, silicon dioxide, and ceria (ceria) in the inorganic oxide. These substances have a hydrophilic group -OH group on the surface and can obtain high hydro...

Embodiment

[0120]Hereinafter, the present invention will be described in more detail by way of examples, but the present invention is not limited by these examples. The measurement methods used in this example are shown below. Unless otherwise specified, the number of measurement n was set to 2, and the average value was adopted.

[0121] (1) Water contact angle

[0122] In an atmosphere with a room temperature of 25° C. and a relative humidity of 50%, 1 to 4 μL of water was dripped onto the membrane surface with a syringe. Using a contact angle meter (manufactured by Kyowa Interface Science Co., Ltd., CA-X contact angle meter), the liquid drop was observed from a horizontal cross section, and the angle formed by the tangent line at the end of the liquid drop and the film plane was determined.

[0123] (2) The wettability of the carbon nanotube dispersion to the surface of the primer or PET substrate

[0124] The wettability of the carbon nanotube dispersion to the surface of the prim...

preparation example

[0161] [Catalyst Preparation Example: Carrying Catalyst Metal Salt on Magnesium Oxide]

[0162] 2.46 g of ferric ammonium citrate (manufactured by Wako Pure Chemical Industries, Ltd.) was dissolved in 500 mL of methanol (manufactured by Kanto Chemical Co., Ltd.). 100.0 g of magnesium oxide (MJ-30 manufactured by Iwatani Chemical Industry Co., Ltd.) was added to the solution, vigorously stirred with a stirrer for 60 minutes, and the suspension was concentrated to dryness at 40° C. under reduced pressure. The obtained powder was heated and dried at 120° C. to remove methanol, thereby obtaining a catalyst complex in which a metal salt was supported on magnesium oxide powder. After the obtained solid content was sieved, fine particles with a particle diameter in the range of 20 to 32 mesh (0.5 to 0.85 mm) were recovered while being pulverized with a mortar. The iron content contained in the obtained catalyst complex was 0.38% by mass. In addition, the bulk density was 0.61 g / mL....

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Abstract

A transparent electroconductive laminate having, on a transparent substrate, an undercoat layer containing an inorganic oxide and an electroconductive layer containing carbon nanotubes in the stated order, wherein the transparent electroconductive laminate is characterized in that: conditions [A] and / or [B] is satisfied; and the proportion of the surface resistance value after being subjected to a 1-hour wet heat treatment at 60 DEG C and a relative humidity of 90% and then being left standing for 3 minutes at 25 DEG C and a relative humidity of 50%, relative to the surface resistance value before the treatment, is 0.7 to 1.3. A method for manufacturing same, electronic paper using same, and a touch panel using same. [A] The white reflectance is from greater than 70% and to no greater than 85%, and the surface resistance value is 1.0 * 102 Omega / - to 1.0 * 104 Omega / -. [B] The total light transmittance is greater than 88% and no greater than 93%, and the surface resistance value is 1.0 * 102 Omega / - to 1.0 * 104 Omega / -. Provided is a transparent electroconductive laminate having excellent heat resistance stability, wet heat resistance stability, and transparent electroconductivity.

Description

technical field [0001] The present invention relates to a transparent conductive laminate, a preparation method thereof, electronic paper using the transparent conductive laminate, and a touch panel using the transparent conductive laminate. More specifically, it relates to a transparent conductive laminate excellent in transparent conductivity, heat-resistant stability, and heat-and-moisture stability, its production method, electronic paper using the transparent conductive laminate, and a touch panel using the transparent conductive laminate . Background technique [0002] Carbon nanotubes essentially have a cylindrical shape by winding one sheet of graphite. Carbon nanotubes wound in one layer are called single-layer carbon nanotubes, and carbon nanotubes wound in multiple layers are called multilayer. Carbon nanotubes, especially carbon nanotubes wound in two layers are called double-layer carbon nanotubes. Carbon nanotubes themselves have excellent intrinsic conductiv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B5/14B32B27/18G02F1/1343G06F3/041G02F1/1676
CPCB32B27/18Y10T428/259Y10T428/257Y10T428/25G02F1/13439G06F3/041G02F1/1343H01B13/30H01B1/04Y10T428/30G02F1/1676
Inventor 大井亮渡边修今津直树
Owner TORAY IND INC
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