Colorless patterned carbon nanotube transparent conductive film and preparation method thereof

Abstract

The invention discloses a chromatism-free patterning carbon nanotube transparent conductive film and a preparation method of the chromatism-free patterning carbon nanotube transparent conductive film. The chromatism-free patterning carbon nanotube transparent conductive film comprises a transparent substrate, a patterning carbon nanotube film which is at least distributed in a visible area on the surface of the transparent substrate, and a patterning insulating material layer distributed on the surface of the transparent substrate, the insulating material layer and the carbon nanotube film are staggered and complemented at least in the visible area, and the light transmittance of the insulating material layer and the light transmittance of the carbon nanotube film are also fundamentally consistent. The preparation method includes the steps of forming the patterning insulating material layer on the surface of the transparent substrate, and forming the patterning carbon nanotube film at least in the visible area on the surface of the transparent substrate. Preferably, the insulating material layer can be mainly made of hydrophobic insulating material, and paint can be further mixed. According to the chromatism-free patterning carbon nanotube transparent conductive film and the preparation method of the chromatism-free patterning carbon nanotube transparent conductive film, high-efficiency, large-area and continual preparation of the chromatism-free patterning carbon nanotube transparent conductive film can be achieved, the technology is easy and controllable, needed equipment is simple, cost is low, optical and electric properties of products are good, and the chromatism-free patterning carbon nanotube transparent conductive film has wide application prospects.

Description

technical field

[0001] The invention relates to a preparation process of a patterned transparent conductive film, in particular to a patterned carbon nanotube transparent conductive film without color difference and a preparation method thereof. Background technique

[0002] Transparent conductive film (TCF) is a kind of film that can conduct electricity and has high light transmittance in the visible light range. It is an important optoelectronic material, mainly used in touch screens, flat panel displays, thermal mirrors, and solar cell electrodes. and other fields. There are many types of transparent conductive films, among which the most mature application is indium tin oxide (ITO) film, but because indium in ITO is a rare metal, its price is high, the supply is limited, the ITO layer is fragile and lacks flexibility, and the preparation process is limited. Many problems such as the high cost in the future have greatly restricted its development, which has triggered the...

Examples

preparation example Construction

[0054] As one of the better specific application solutions, refer to figure 1 , the preparation method may specifically include the following steps:

[0055] (1) Use pigments to adjust the color of the hydrophobic ink;

[0056] (2) Print the toned hydrophobic ink onto the surface of the flexible transparent substrate 4 by flexographic printing to form an insulating area and form a set negative pattern structure, and dry in an oven to form a patterned insulating material layer 1;

[0057] (3) Apply the carbon nanotube dispersion 2 on the surface of the substrate (including the insulating layer area and the electrode pattern area) by using the method of dimple coating, and use the principle of oil-water separation to automatically form the required electrode pattern, and then dry it in an oven Forming a transparent conductive layer 3 (patterned carbon nanotube film);

[0058] (4) Pickling to remove impurities such as surfactants remaining on the surface of the carbon nanotube ...

Embodiment 1

[0072] Example 1 Add an appropriate amount of carbon black MD-1808 to simethicone oil containing a curing aid, stir well, and pour it into the ink tank of a flexographic printing machine; the prepared carbon nanotube dispersion ( Concentration is 0.5wt%) and joins in the ink tank of dimple coater; Start the machine button, adjust the mechanical speed to be 5m / min, adjust the unwinding tension to be 5kg, and the winding tension to be 5.5kg, adjust the drying of oven one The temperature is 120°C, and the drying temperature of the second and third ovens is adjusted to 100°C; when the temperature of the oven rises to the set temperature, press the start button, and under the traction of the guide film, the PET (ethylene glycol phthalate) film Walking process can refer to figure 2 . First, the silicone oil is printed on the PET film by a flexographic printing machine to form a set negative pattern. The printed PET film enters the oven 1 and is dried under hot air at 120°C, and th...

Embodiment 2

[0073] Example 2 Add an appropriate amount of carbon black MD-1808 to the methyl chlorophenyl silicone oil containing curing aids, stir well, and pour it into the ink tank of the flexographic printing machine; disperse the configured carbon nanotubes Liquid (concentration is 0.5wt%) joins in the ink tank of gravure printing machine; Start the machine button, adjust the mechanical speed to be 5m / min, adjust the unwinding tension to be 5kg, and the winding tension to be 5.5kg, adjust the drying of oven one The temperature is 120°C, and the drying temperature of the second and third ovens is adjusted to 100°C; when the temperature of the oven rises to the set temperature, press the start button, and under the traction of the guide film, the PET (ethylene glycol phthalate) film Walking process can also refer to figure 2 . First, the silicone oil is printed on the PET film by a flexographic printing machine, and a set negative pattern is formed. The printed PET enters the first ...

technical field

[0001] The invention relates to a preparation process of a patterned transparent conductive film, in particular to a patterned carbon nanotube transparent conductive film without color difference and a preparation method thereof. Background technique

[0002] Transparent conductive film (TCF) is a kind of film that can conduct electricity and has high light transmittance in the visible light range. It is an important optoelectronic material, mainly used in touch screens, flat panel displays, thermal mirrors, and solar cell electrodes. and other fields. There are many types of transparent conductive films, among which the most mature application is indium tin oxide (ITO) film, but because indium in ITO is a rare metal, its price is high, the supply is limited, the ITO layer is fragile and lacks flexibility, and the preparation process is limited. Many problems such as the high cost in the future have greatly restricted its development, which has triggered the...

Examples

preparation example Construction

[0054] As one of the better specific application solutions, refer to figure 1 , the preparation method may specifically include the following steps:

[0055] (1) Use pigments to adjust the color of the hydrophobic ink;

[0056] (2) Print the toned hydrophobic ink onto the surface of the flexible transparent substrate 4 by flexographic printing to form an insulating area and form a set negative pattern structure, and dry in an oven to form a patterned insulating material layer 1;

[0057] (3) Apply the carbon nanotube dispersion 2 on the surface of the substrate (including the insulating layer area and the electrode pattern area) by using the method of dimple coating, and use the principle of oil-water separation to automatically form the required electrode pattern, and then dry it in an oven Forming a transparent conductive layer 3 (patterned carbon nanotube film);

[0058] (4) Pickling to remove impurities such as surfactants remaining on the surface of the carbon nanotube ...

Embodiment 1

[0072] Example 1 Add an appropriate amount of carbon black MD-1808 to simethicone oil containing a curing aid, stir well, and pour it into the ink tank of a flexographic printing machine; the prepared carbon nanotube dispersion ( Concentration is 0.5wt%) and joins in the ink tank of dimple coater; Start the machine button, adjust the mechanical speed to be 5m / min, adjust the unwinding tension to be 5kg, and the winding tension to be 5.5kg, adjust the drying of oven one The temperature is 120°C, and the drying temperature of the second and third ovens is adjusted to 100°C; when the temperature of the oven rises to the set temperature, press the start button, and under the traction of the guide film, the PET (ethylene glycol phthalate) film Walking process can refer to figure 2 . First, the silicone oil is printed on the PET film by a flexographic printing machine to form a set negative pattern. The printed PET film enters the oven 1 and is dried under hot air at 120°C, and th...

Embodiment 2

[0073] Example 2 Add an appropriate amount of carbon black MD-1808 to the methyl chlorophenyl silicone oil containing curing aids, stir well, and pour it into the ink tank of the flexographic printing machine; disperse the configured carbon nanotubes Liquid (concentration is 0.5wt%) joins in the ink tank of gravure printing machine; Start the machine button, adjust the mechanical speed to be 5m / min, adjust the unwinding tension to be 5kg, and the winding tension to be 5.5kg, adjust the drying of oven one The temperature is 120°C, and the drying temperature of the second and third ovens is adjusted to 100°C; when the temperature of the oven rises to the set temperature, press the start button, and under the traction of the guide film, the PET (ethylene glycol phthalate) film Walking process can also refer to figure 2 . First, the silicone oil is printed on the PET film by a flexographic printing machine, and a set negative pattern is formed. The printed PET enters the first ...

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