Method for manufacturing capacitive touch screen and touch-control layer, and electronic device

Abstract

The invention is suitable for the technical field of touch screen structures, and discloses a method for manufacturing a capacitive touch screen and a touch-control layer, and an electronic device. The capacitive touch screen comprises a panel and a screen module, wherein an optical adhesive layer and a BM border layer are arranged between the panel and the screen module; the screen module comprises an upper polarizer, an upper glass substrate, a lower glass substrate, a lower polarizer and a backlight board which are sequentially arranged in a cascade manner from top to bottom, wherein a first metal conductive ink circuit layer is arranged on the panel, a second metal conductive ink circuit layer is arranged in the screen module, or both the first metal conductive ink circuit layer and the second metal conductive ink circuit layer are arranged in the screen module; each of the first metal conductive ink circuit layer and the second metal conductive ink circuit layer comprises a plurality of touch units, and each of the touch units is provided with a lead wire connected with a processor. The capacitive touch screen is sensitive in touch control and high in accuracy degree; the production method for the touch-control layer is simple, low in cost, energy-saving and environment-friendly, and capable of improving the use convenience and reliability of the electronic device with the touch screen.

Description

technical field [0001] The invention belongs to the technical field of touch screen structures, and in particular relates to a capacitive touch screen, a method for manufacturing the touch layer thereof, and an electronic device with the touch screen. Background technique [0002] The capacitive touch screen uses the current induction change of the human body to locate the touch position when touching. Touch technology of projected capacitive panels: projected capacitive touch screens are etched with ITO conductive circuit modules in different directions on a layer of ITO (indium tin oxide) conductive glass coating. The graphics etched on the two modules can be regarded as sliders that change continuously in the X and Y directions. Since the X and Y structures are on different surfaces, their intersections form a capacitor node. One slider can be used as a drive line, and the other slider can be used as a sense line. When the current passes through one wire in the drive l...

AI Technical Summary

Problems solved by technology

This has brought a series of problems, such as high equipment investment, large workshop area, high energy consumption, and the development and etching process requires a large amount of acid and alkali, which is not conducive to environmental protection

At the same time, indium tin oxide is a rare earth oxide, and its resources are on the verge of depletion, and the conductive film made of this material has a relatively high impedance. For a large-sized touch screen, its touch accuracy and sensitivity are difficult to meet the requirements.

[0004] There are also some companies or research institutions in the industry that have published methods for making touch screens with ITO (indium tin oxide) alternative materials, such as carbon nanotubes, metal grids, nano silver wires, conductive polymer materials, etc., but either the material preparation is difficult, or It is difficult to manufacture conductive film or conductive pattern, the process is complicated, and it is difficult to industrialize

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