Corrosion-resistant high-conductivity copper-based conductive circuit and its forming process

Abstract

The invention relates to the technical field of touch screens and particularly relates to a corrosion-resistance high-conductivity copper-based conductive circuit and a molding process thereof. The copper-based conductive circuit comprises a copper-based bottom layer, a high polymer conductive middle layer and a graphene outer layer from inside to outside, wherein the copper-based bottom layer isa copper-doped titanium dioxide bottom layer; copper-based conductive ink, high polymer conductive ink and graphene ink are sequentially ejected to a substrate by using a piezoelectric ejector, and the ink is cured to form the conductive circuit. By adopting the copper-based conductive circuit, the copper-based bottom layer can be isolated from the air through the high polymer conductive middle layer, and then oxidation corrosion can be avoided; the high polymer conductive middle layer is covered and protected by using the graphene outer layer, then the high polymer conductive middle layer canbe prevented from aging, the formed copper-based conductive circuit is relatively good in conductivity, oxidation corrosion can be effectively avoided, and the service life of the copper-based conductive circuit can be prolonged.

Description

technical field [0001] The invention relates to the technical field of touch screens, in particular to a corrosion-resistant and highly conductive copper-based conductive circuit and a molding process thereof. Background technique [0002] Touch screen, also known as "touch screen" or "touch panel", is an inductive liquid crystal display device that can receive input signals such as contacts. Drive various connecting devices according to pre-programmed programs, which can be used to replace mechanical button panels, and produce vivid audio-visual effects through liquid crystal display screens. As the latest computer input device, the touch screen is currently the simplest, most convenient and natural way of human-computer interaction. It endows multimedia with a new look and is a very attractive new multimedia interactive device. Mainly used in public information inquiry, leadership office, industrial control, military command, electronic games, ordering songs and dishes, ...

AI Technical Summary

Problems solved by technology

Gold-based conductive inks have excellent properties, but they are expensive and their use is limited to a large extent. The application is limited to products with special requirements such as thick-film integrated circuits; silver powder has good high conductivity and chemical stability. The conductivity of silver-based conductive inks is slightly lower than that of gold-based conductive inks, but it has a wide range of applications and can be used in large quantities for printing electrical circuits with high reliability. However, silver-based conductive inks have the problem of easy migration of electrons; copper-based conductive inks are cost-effective. However, copper powder is easy to oxidize and corrode, which increases the resistivity and reduces the quality of the touch screen