A capacitive touch screen and terminal equipment

Abstract

The invention relates to the field of touch screens, in particular to a capacitive touch screen. The capacitive touch screen comprises a base material and a silver nanowire conducting layer coated onthe base material, wherein the silver nanowire conducting layer comprises a visible area and a binding area, OCA optical cement is attached to the visible area, a connecting circuit is printed from the inner edge of the visible area to the binding area, and the silver nanowire conducting layer is connected with the flexible circuit board through the connecting circuit. According to the invention,the silver nanowires are used as the conductive layer, and the connection line is printed in the conductive layer binding area, so that the connection between the conductive layer and the flexible circuit board is realized, and the phenomenon that the silver nanowires are damaged due to the direct binding between the flexible circuit board and the conductive layer is avoided; And the printed silver paste does not need to be etched, so that the problem of environmental pollution caused by destructive particles generated by laser etching or acid-base etching is avoided. And by printing a connecting circuit, the protection of the silver nanowires from the conductive layer binding region to the visible region can be realized.

Description

technical field [0001] The invention relates to the field of touch screens, in particular to a capacitive touch screen and terminal equipment. Background technique [0002] With the continuous development of science and technology, touch screen, as a simple and convenient way of human-computer interaction, has been widely used in various fields of our daily life. Light, thin, bendable, low-cost and other directions of development. Most of the traditional conductive materials are indium tin oxide materials, but because of their poor conductivity and flexibility and resistance to repeated flexing, silver nanowires are often used as an alternative material. Silver nanowires have the high conductivity and excellent flexibility of metallic silver, and are the best choice for transparent electrode materials for ultra-large and flexible touch screens. [0003] The existing large-size capacitive touch screen manufacturing process is to screen-print or electroplate a layer of condu...

AI Technical Summary

Problems solved by technology

However, when the printed conductive silver paste of the frame is etched by laser method, it is easy to produce micron-sized metal particles, and then damage the nano-silver wires in the visible area, resulting in low yield.

At the same time, if acidic ink or etching paste is used for etching, in addition to the cumbersome cleaning process, it is also easy to cause environmental pollution, and it is also easy to corrode the nano-silver wires in the visible area.

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