Touch screen and method of forming same

Abstract

The invention provides a touch screen and a method for forming same. The touch screen herein comprises a glass sensor, wherein forming the glass sensor includes the following steps: providing a transparent substrate; forming a transparent conductive layer on the transparent substrate; forming a basic decorative layer within a non-window area of the touch screen, at least one part of the basic decorative layer covering the transparent conductive layer, and the at least one part of the basic decorative layer which covers the transparent conductive layer including a through-hole; forming a conductive printing ink layer which fills the through-hole; forming a silver paste conductive layer on the basic decorative layer, at least one part of the silver paste conductive layer covering a top surface of the conductive printing ink layer, the silver paste conductive layer including a plurality of silver paste PINs and a plurality of silver paste routings, in which the plurality of silver paste PINs are formed through a silk screen technology and the plurality of silver paste routings are formed through silver paste blocks first being subject to the silk screen technology and then being subject to the dry etching silver paste line technology. Of the invention, the silver paste conductive layer is prepared through the dry etching technology, which has the advantages of accurate graphics and high process rate.

Description

technical field [0001] The invention belongs to the technical field of touch devices, and in particular relates to a touch screen and a forming method thereof. Background technique [0002] The structure of the existing capacitive touch screen mainly includes: a transparent substrate, a transparent electrode layer including multiple rows and columns of ITO transparent electrode units, metal PIN pins and metal wirings connected to the ITO transparent electrode units. When a finger touches the touch screen, a coupling capacitance is formed between the finger and the ITO transparent electrode unit, causing a change in the capacitance of the touch point, and the corresponding electrical signal is derived through the corresponding PIN pin, thereby calculating the position of the finger. [0003] Metal PIN pins and metal traces can be made by silk screen printing, preferably using silver material with good conductivity. At present, the minimum line width distance of silk screen p...

AI Technical Summary

Problems solved by technology

Therefore, when the screen printing area is small, the number of silver paste lines is large, and the spacing is short, it is difficult to obtain precise PIN pins and wiring by the direct screen printing process, and the process yield is low.

Images