A capacitive touch screen with nano-silver electrodes

Abstract

The invention relates to a capacitive touch screen with a nano silver electrode. The capacitive touch screen is characterized in that a plurality of second electrode arrangement areas which extend along a second direction are arranged on a second substrate; a plurality of grooves are formed in each second electrode arrangement area; the grooves are staggered to form a net shape; nano silver conductive materials are filled in the grooves; the nano silver conductive material in each groove forms a nano silver fine conductive wire; all nano silver fine conductive wires in each second electrode arrangement area form a second electrode; and the nano silver fine conductive wires in all the second electrode arrangement areas form a second electrode layer. Due to the arrangement of the width and depth of the grooves, the second electrode meets the conductive requirements, and the width is small, so that the second electrode has small superficial area; and when the second electrode is overlapped with the first electrode, a small overlap area is formed, so that the capacitive touch screen has low plate capacitance value, the overlapping parasitic capacitance is greatly reduced, the mutual capacitance signal change ratio and the sensitivity of the capacitive touch screen are improved after the capacitive touch screen is touched by fingers.

Description

technical field [0001] The invention relates to a capacitive touch screen, in particular to a capacitive touch screen with nano-silver electrodes. Background technique [0002] The capacitive touch screen using the principle of mutual capacitance detection, as an efficient input device, has been applied to various consumer electronic products such as mobile phones, tablet computers, and notebooks because it is easy to realize multi-touch. Such as figure 1 As shown, this kind of capacitive touch screen generally includes a first electrode layer and a second electrode layer, wherein the first electrode layer includes a plurality of first electrodes 01 extending along the first direction, and the second electrode layer includes a plurality of electrodes 01 extending along the second direction. The first direction of the second electrodes 02 is different from the second direction, so that a plurality of first electrodes 01 and a plurality of second electrodes 02 cross each othe...

AI Technical Summary

Problems solved by technology

At the intersection of the first electrode 01 and the second electrode 02, two layers of transparent conductive films overlap each other to form a parasitic plate capacitance. Since the transparent conductive films are continuously arranged on the film surface, the overlapping area is relatively large, so that the The capacitance value of the parasitic capacitance is large, which reduces the ratio of the change in the mutual capacitance between the first electrode 01 and the second electrode 02 to the total mutual capacitance during touch, and affects the sensitivity of touch sensing.

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