Capacitive touch screen of single glass structure and production technology thereof

Abstract

The invention discloses a capacitive touch screen of single glass structure and a production technology thereof. The capacitive touch screen comprises a small glass white substrate, a touch-control electrode layer and a flexible circuit board, wherein an ITO conductive film is plated on a window area of the small glass white substrate, and a PET protecting film is adhered to the ITO surface; the ITO glass is subjected to wet etching according to the designed electrode pattern, Ag wires and golden fingers are sputtered so as to form the touch-control electrode layer; the ITO glass and the flexible circuit board are connected by conducting resin via a binding procedure, so as to provide a touch-control function through conducting with a touch-control IC. The current capacitive touch screen which is produced by all big manufacturers is low in production qualification rate, high in cost and bad in touch-control effect. The capacitive touch screen provided by the invention has the advantages of material and labor saving, lower cost and higher qualification rate, and is thinner as compared with a traditional production technology and other capacitive touch screens with the single glass structures.

Description

technical field [0001] The invention relates to a touch screen, in particular to a capacitive touch screen with a monolithic glass structure and a production process thereof. Background technique [0002] The working principle of the capacitive touch screen is mainly to use the touch electrode etched on the surface of the glass substrate. The electrostatic combination between the touch electrode and the human body corresponds to generate capacitance. The induced current generated by the capacitance change of the touched position is used to detect the corresponding coordinates of the touched position. The main technologies of the existing capacitive touch screen are divided into two types: film type and glass type. The current mainstream film type structure is to etch out the designed electrode pattern through two layers or one layer of ITO film through photolithography or silk screen printing, and then connect it with the outer protective glass. Lay them together with optic...

AI Technical Summary

Problems solved by technology

The production process of these two structures is relatively long and complicated, and the bonding yield is generally low, which is also the main reason for the high cost of capacitive touch panels.

Therefore, in the future, monolithic capacitive touch screens will become the mainstream of the development trend. However, the production yield of monolithic capacitive touch screens developed by major manufacturers is very low, the cost is high, and the touch effect is relatively poor. , these are the reasons why the capacitive touch screen with monolithic structure cannot become the mainstream

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