Nano carbon tube capacitive type touch screen and production and manufacturing method thereof

Abstract

The invention relates to a nano carbon tube capacitive type touch screen and a production and manufacturing method of the nano carbon tube capacitive type touch screen. The structure comprises a cover plate layer, an OCA (Optically Clear Adhesive) optical adhesive layer and a nano carbon tube transparent conducting thin film layer, wherein a line layer is further arranged on the lower surface of the nano carbon tube transparent conducting thin film layer; an electrode layer is arranged at the periphery of the line layer; the electrode layer is used for leading out the line layer; in a working process, a low-voltage alternating-current electric field is formed in the nano carbon tube transparent conducting thin film layer; when a finger of a user touches the surface of the nano carbon tube capacitive type touch screen, a coupling capacitor is formed between the finger and the nano carbon tube transparent conducting thin film layer; meanwhile, a certain number of charges are transferred to a human body; in order to recover charge loss, the charges are supplemented from four corners of the nano carbon tube capacitive type touch screen; the charge number supplemented in each direction is proportion to the distance to a touch point so that the position of the touch point can also be calculated.

Description

technical field [0001] The invention relates to a capacitive touch screen and a manufacturing method thereof, in particular to a structure and a processing method formulated for the composition of carbon nanotubes. Background technique [0002] As we all know, carbon nanotubes are seamless hollow tubular structures formed by curling carbon nanotube sheets. With excellent electrical properties, high strength and flexibility, stable chemical properties, and no obvious characteristic absorption of visible light and near-infrared light, the film composed of it is an ultra-flexible "transparent" conductor. In addition, the film also has the advantages of low cost, environmental friendliness and abundant resources. The current research results have proved that carbon nanotube films have transparent conductivity comparable to ITO, and are also considered to be the most promising materials to replace resource-scarce and brittle ITO and become one of the materials for a new generati...

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Problems solved by technology

[0015] The disadvantage of the transparent conductive film materials commonly used at present is that the outer layer of the film is easy to be scratched and scratched, resulting in malfunction of the touch screen; the ITO conductive layer is easily changed by changes in external conditions, and carbon nanotubes are used as a super flexible The "transparent" conductor can overcome the shortcomings of traditional materials

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