Capacitive touch screen and manufacturing method thereof

Abstract

A capacitive touch screen comprises three layers, namely a tempered glass layer and two conductive layers below the toughened glass layer; the number of the conductive layers is two. Each conductive layer comprises a UV adhesive layer and conductive silver paste; a plurality of grooves are formed in the UV adhesive layer; the groove is filled with conductive silver paste; the capacitive touch screen further comprises an FPC board. The FPC board is electrically connected with the conductive layer. According to the capacitive touch screen and the manufacturing method thereof, the conductive silver paste is solidified in the UV glue, then the UV glue and the toughened glass are bonded, the PET base material is only used as a mother board, and the touch screen is not provided with the PET basematerial, so that material input is reduced, the thickness of the touch screen is reduced, and the touch screen is more attractive and practical.

Description

[0001] 【Technical field】 [0002] The invention relates to the technical field of multimedia display devices, in particular to a capacitive touch screen and a manufacturing method thereof. [0003] 【Background technique】 [0004] As a continuation of the capacitive touch screen, the large-size capacitive touch screen is not enlarged on the basis of the traditional small-size capacitive touch screen. The size range of the traditional capacitive touch screen is below 10.1 inches, because the traditional capacitive touch screen uses oxidation. As a transparent conductive material, indium tin has a high inherent surface resistance, even up to 100 ohms, because the channel resistance supported by the IC is certain, the surface resistance is constant, the larger the size, the greater the channel resistance, so As a result, larger sizes cannot be achieved. In order to solve this problem, at present, large-scale capacitive touch screens mostly use metal grids and nano-silver wires inst...

AI Technical Summary

Problems solved by technology

[0004] As a continuation of the capacitive touch screen, the large-size capacitive touch screen is not enlarged on the basis of the traditional small-size capacitive touch screen. The size range of the traditional capacitive touch screen is below 10.1 inches, because the traditional capacitive touch screen uses oxidation. As a transparent conductive material, indium tin has a high inherent surface resistance, even up to 100 ohms, because the channel resistance supported by the IC is certain, the surface resistance is constant, the larger the size, the greater the channel resistance, so As a result, larger sizes cannot be achieved. In order to solve this problem, at present, large-scale capacitive touch screens mostly use metal grids and nano-silver wires instead of indium tin oxide. Including tempered glass, two layers of conductive film, and two layers of optical glue. This kind of multi-layer composite structure material has high cost, cumbersome manufacturing process, and thick thickness, so it does not meet the development trend of light and thin.

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