Two-dimensional touch control sensor of combined structure

Abstract

A two-dimensional touch control sensor of a combined structure comprises a plurality of sets of transparent electrodes which are attached to a substrate as patterns in the X and Y directions and are made of transparent conductive films, and at least one fine metal wire electrically connecting the same set of electrodes is attached to the substrate. In order to avoid affecting the vision, the equivalent diameter of the fine metal wire should be smaller than 30 micrometers. The fine metal wire is further used for forming a coil, the electrodes are made of the transparent films with high sheet resistance, and then the two-dimensional touch control sensor can be expanded to be used for detecting electromagnetic signals of a handwriting pen and used for handwriting input detecting needing higher accuracy and including a pressure function. The fine metal wire is used as a signal channel so that the two-dimensional touch control sensor can be applied to a large capacitance touch screen. The electrodes are made of the films with higher transparency and sheet resistance, the power consumption of a display panel can be reduced, and the influences of a touch panel on the vision are minimized.

Description

technical field [0001] The invention mainly relates to a sensor compatible with sensing electrodes and electromagnetic induction sensing coils of capacitive touch screens, and more particularly to the basic structure of a capacitive and electromagnetic sensor constructed by using thin metal wires and transparent film conductors, which belongs to touch sensing Enter the technical field. Background technique [0002] With the popularization of human-computer interaction technology, projected capacitive touch screen technology is widely used in handheld devices such as mobile phones and tablet computers. Among the existing projected capacitive touch screen panels, the most widely used technology is to use ITO to make transparent touch electrodes. Although ITO has good light transmittance, the disadvantages of high raw material price, brittleness and high resistivity limit the application of ITO in large-size products, and only a few companies in the world can stably produce an...

AI Technical Summary

Problems solved by technology

Firstly, in view of the problem that existing inorganic or organic transparent conductive materials such as ITO are used to manufacture capacitive touch sensors, which have high resistivity and are not easy to be used in larger touch screens, the present invention discloses a method using thin metal wires as The conductor for signal transmission, the technical solution of the touch sensing electrode with a hybrid structure using other transparent conductive film materials as surface sensing conductors, to solve the problems of high impedance of existing transparent film sensors and the problem of moiré patterns easily generated by metal grid sensors; No. 2. Based on the above technical solution, the present invention also discloses a technical solution that integrates the electromagnetic induction detection electrode and the capacitive induction electrode, and integrates the capacitive touch sensor and the electromagnetic induction detection coil into one panel to realize both functionally compatible

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