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Circuit transparent conducting film and preparation method thereof

A transparent conductive film and circuit technology, which is applied in the manufacture of cables/conductors, conductive layers on insulating carriers, circuits, etc., can solve the problems of hindering application promotion, large environmental pollution, low efficiency, etc., and achieves wide application, simple method, cost saving effect

Active Publication Date: 2015-04-22
GUANGZHOU QIANSHUN IND MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the transparent conductive film based on these new conductive nanomaterials is often faced with chemical corrosion or laser etching, which has the disadvantages of large environmental pollution, low efficiency, and high energy consumption. Many difficulties hinder its development. application promotion

Method used

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  • Circuit transparent conducting film and preparation method thereof
  • Circuit transparent conducting film and preparation method thereof

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Embodiment 1

[0044] In this embodiment, a method for preparing a direct-write transparent conductive film with lines includes the following steps (see figure 1 ):

[0045] (1) Preparation of conductive paste: Mix silver nanowires (Ag nanowires) with a diameter of about 40nm and a length of about 25μm with water / ethanol (1:1 volume ratio) to form a silver nanowire solution, and then add Polyurethane resin and polyvinylpyrrolidone are fully stirred and dissolved to obtain a conductive paste, wherein the concentrations of silver nanowires, polyurethane resin and polyvinylpyrrolidone are 3.0mg / mL, 3.5mg / mL and 0.5mg / mL respectively;

[0046] (2) Make the conductive layer: select a direct writing head with an inner diameter of 0.4 mm discharge hole, connect the direct writing head with the delivery pump for controlling the flow of the conductive paste and the container containing the conductive paste in order to control the writing speed and feed Liquid speed, write on the PET substrate, and o...

Embodiment 2

[0050] In this embodiment, a method for preparing a direct-wiping transparent conductive film with lines includes the following steps (see figure 2 ):

[0051] (1) Preparation of conductive paste: Mix silver nanowires (Agnanowires) with a diameter of about 40nm and a length of about 25μm with water / ethanol (1:1 volume ratio) to form a silver nanowire solution, and then add polyurethane Resin and polyvinylpyrrolidone were fully stirred and dissolved to obtain a conductive paste, wherein the concentrations of silver nanowires, polyurethane resin and polyvinylpyrrolidone were 3.0mg / mL, 0.2mg / mL and 0.2mg / mL;

[0052] (2) Make the conductive layer: evenly coat the conductive paste on the transparent glass substrate with a coating thickness of about 10 μm, place it in an oven, and dry it at 100°C for 5 minutes to form a conductive layer on the glass substrate . Select a rubbing head with a diameter of 0.4mm, and linearly erase the conductive layer on the surface according to the...

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Abstract

The invention discloses a circuit transparent conducting film and a preparation method thereof. The preparation method comprises the steps that conductive paste is prepared; a conducting layer is manufactured, the conductive paste is directly written on a base material and dried, so that the conducting layer of a conducting circuit is obtained; or the base material is coated with the conductive paste and then dried, so that the conducting layer is obtained, a wiping brush device is used for directly wiping off a part of the conducting layer, and a conducting layer of an insulating circuit is obtained; the conducting layer is coated with protection liquid, and the protection liquid is dried and cured, so that a film covering layer is formed. The circuit transparent conducting film is prepared in a direct writing mode or a direct wiping mode, the method is novel in idea and simple, the preparation process is environment friendly, a large-area circuit transparent conducting film is easy to manufacture, the photolithography technique is not needed, cost is remarkably saved, and the circuit transparent conducting film can be widely applied to the field of electronic information products, especially a large-area touch screen.

Description

technical field [0001] The invention relates to the field of conductive films, in particular to a transparent conductive film with lines and a preparation method thereof. Background technique [0002] Transparent conductive film is a very important optoelectronic material, which is widely used in large interactive touch screens, flat panel displays, smart glass and solar cells. At present, the main material used to make transparent conductive films is still ITO. However, ITO faces problems such as shortage of indium resources, restrictions on raw material imports and soaring prices. Therefore, in recent years, the development of new conductive nanomaterials and their macro-preparation techniques for transparent conductive films has become a very hot research field. Some new conductive nanomaterials, such as silver nanowires and copper nanowires, have better conductivity than ITO and more advantages in production cost than ITO films, and are currently very promising. Howev...

Claims

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Application Information

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IPC IPC(8): H01B13/00H01B5/14
Inventor 苏红霞刘洪田耕
Owner GUANGZHOU QIANSHUN IND MATERIAL