Manufacturing process of projection type capacitive touch screen

Abstract

The invention discloses a manufacturing process of a projection type capacitive touch screen. The current large-size capacitive touch screen has the problems that the production process is complex, the rate of finished products is low, the cost is high, the size of the screen can not be customized and the bending can not be achieved. The manufacturing process comprises the following steps that firstly a PET_X film and a PET_Y film are respectively placed on a 3D (three dimensional) printing platform; secondly, a machine arm sticks a flexible tail-whipping circuit board on the PET_X film, the back surface of the flexible tail-whipping circuit board is coated with adhesive, and one side with a conductive gold finger is upwards; the films enter electrostatic absorption equipment, and static electricity can be uniformly distributed on the films by the equipment; then the films enter 3D printing equipment for printing; finally insulating treatment and film lamination are carried out. The manufacturing process disclosed by the invention has the advantages that the screen can be bent, and can be stuck on the surface of curved glass or the surface of irregularly-shaped glass.

Description

technical field [0001] The invention belongs to the fields of 3D printing, digital modeling, laser application and the like, and in particular relates to a production process of a projected capacitive touch screen. Background technique [0002] Projected capacitive touch screen is a kind of sensing film mainly encapsulated with fine wires. It integrates the advantages of precise sensing positioning, flexibility and high transparency. It is used for precise touch positioning of touch screens above 12 inches, and is also used in precise Interactive projection. [0003] Projected capacitive technology is a kind of horizontal and vertical electrode arrays made on the surface of glass or transparent film. These horizontal and vertical electrode capacitance changes are used to detect finger touches. According to the difference in capacitance generation, it is divided into two types: Types of: [0004] Self-capacitance screens are made of transparent conductive materials on the s...

AI Technical Summary

Problems solved by technology

[0015] In view of the above-mentioned defects of large-size capacitive touch screens (above 12 inches), the purpose of the present invention is to provide a custom-made size (12 inches to 120 inches), which can be used for non-flat glass, simple production process, and high yield. The capacitive touch screen with a cost close to that of an infrared screen solves the mass production technical problems of high transparency, large-size sensing film, low cost, high yield, and no emission.

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