Preparation method for graphene touch screen

Abstract

The present invention relates to a preparation method for a graphene touch screen. The method comprises: washing a graphene conductive film; coating a permanent non-ionic macromolecular anti-static agent on the surface of the graphene conductive film and heating and baking the coated conductive film to form a high-resistance or insulated anti-static protective layer; selecting silver paste capable of penetrating through the anti-static protective layer, printing the silver paste on the surface of the anti-static protective layer by a silkscreen, and heating and curing the silver paste to form a silver paste track, wherein the silver paste track penetrates through the anti-static protective layer to conduct the graphene conductive film; carrying out laser etching to form a circuit pattern; fitting the graphene conductive film to an optical adhesive; and producing a touch screen inductive module by steps of thermally pressing an FPC and fitting a glass cover plate. By means of the preparation method provided by the present invention, the high-resistance and even insulated anti-static protective layer is produced on the surface of the graphene conductive film, the silver paste capable of penetrating through the anti-static protective layer can penetrate through a conductive network formed by the anti-static protective layer to conduct graphene at the bottom, and normal use of the conductive film in the touch screen product and the preparation process is not influenced when the surface of the graphene is approximately insulated.

Description

technical field [0001] The invention relates to the technical field of graphene equipment, in particular to a method for preparing a graphene touch screen. Background technique [0002] CVD polycrystalline graphene has poor adhesion to the substrate, and it is easy to scratch and damage in the pre-shrinking, silk printing, photolithography, cleaning and transfer production processes of conductive film touch screens. Normal cleaning (high-pressure water, ultrasonic, cleaning agent) solves the problem; cleaning will cause square resistance to increase or even a large area of ​​open circuit. Without cleaning, it is impossible to remove the short circuit of silver chips and surface dirt after photolithography. The yield rate is low, so it cannot be mass-produced. Produce. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a method for preparing a graphene touch screen that is easy to clean and suitable for industrial m...

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Problems solved by technology

[0002] CVD polycrystalline graphene has poor adhesion to the substrate, and it is easy to scratch and damage in the pre-shrinking, silk printing, photolithography, cleaning and transfer production processes of conductive film touch screens. Normal cleaning (high-pressure water, ultrasonic, cleaning agent) solves the problem; cleaning will cause square resistance to increase or even a large area of ​​open circuit. Without cleaning, it is impossible to remove the short circuit of silver chips and surface dirt after photolithography. The yield rate is low, so it cannot be mass-produced. Produce

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