Capacitive touch screen

Abstract

The invention provides a capacitive touch screen. The capacitive touch screen comprises a first conducting layer, a second conducting layer and a control chip. The second conducting layer is coupled with the first conducting layer, and the control chip is electrically connected with the first conducting layer and the second conducting layer. The control chip is used for controlling independent switch-on of the first conducting layer or controlling simultaneous switch-on of the first conducting layer and the second conducting layer. An insulating dielectric layer is arranged between the first conducting layer and the second conducting layer, and the projection of the second conducting layer on the first conducting layer perpendicularly intersects with the first conducting layer. The capacitive touch screen has the advantages that the capacitive touch screen can integrate a self-capacitance function with a mutual capacitance function, the problem of low practicability of capacitive touch screens in the prior art due to the fact that conducting layers of the capacitive touch screens can only form self-capacitance or mutual capacitance selectively is solved, and correspondingly, application range of the capacitive touch screen is widened.

Description

technical field [0001] The invention relates to touch screen technology, in particular to a capacitive touch screen. Background technique [0002] With the rapid development of display technology, the touch screen is an inductive display that can receive input signals through touch, which gives a new look to information interaction and is an integral part of an attractive new information interaction device. [0003] The development of touch screen technology has aroused widespread concern in the information and media circles at home and abroad, and has become a rising high-tech industry in the photoelectric industry. According to the working principle, touch screens include capacitive touch screens, inductive touch screens and resistive touch screens. In the currently commonly used capacitive touch screens, the conductive layer is generally used to form self-capacitance to realize the single-touch function, or the conductive layer is used to form mutual capacitance to realiz...

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a capacitive touch screen, which solves the problem that the capacitive touch screen in the prior art has low practicability because its conductive layer can only selectively form self-capacitance or mutual capacitance, and accordingly improves The scope of use of this capacitive touch screen

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