Panel, touch control processing device, system and method for capacitive detection

Abstract

The invention relates to a touch panel, a touch processing device, a touch system and a method thereof for capacitive detection. The touch panel includes, in order: a conductive layer; an insulating layer; and at least one touch electrode layer comprising a plurality of first electrodes parallel to the first axis and a plurality of second electrodes parallel to the second axis, the plurality of first electrodes and the plurality of second electrodes being respectively connected to a touch processing device, wherein the touch processing device detects an external object approaching or contacting the touch panel by means of the plurality of first electrodes and the plurality of second electrodes, and the conductive layer is closer to the external object than the at least one touch electrode layer. The capacitive detection device has the advantages that errors caused by electrostatic charges to capacitive detection can be reduced or avoided, and the detection accuracy is improved.

Description

technical field [0001] The present application relates to touch panels, in particular to touch panels having conductive layers. Background technique [0002] A touch screen or panel is one of the common I / O interfaces in modern electronic systems. When a stylus, electronic eraser, hand or clothing is rubbed back and forth on the touch panel or screen for a long time, static charges will be generated on the surface of the touch panel or screen. These electrostatic charges will be introduced to the ground along the touch electrodes. Especially in a dry environment, static charges are not easily introduced into the atmosphere with the moisture in the air. However, in the process of conduction, if the touch processing device is sensing, whether it uses the principle of self-capacitance or mutual-capacitance sensing, the electrostatic charge may affect the components inside the sensing circuit, so that the position generated according to the sensing result offset. In the wors...

AI Technical Summary

Problems solved by technology

However, during the conduction process, if the touch processing device is sensing, whether using the self-capacitance or mutual-capacitance sensing principle, the electrostatic charge may affect the components inside the sensing circuit, making the position generated according to the sensing result offset

In the worst case, the sensing circuit cannot sense a finger, stylus or other objects due to electrostatic charges that may saturate the capacity of the sampling circuit in the sensing circuit

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