Touch screen, manufacturing method thereof, and plug-in touch screen

Abstract

A touch screen and the fabricating method thereof and an out-cell touch display device solve the problem of shadow elimination of bridge points. The method for fabricating the touch screen includes: forming a pattern of a first touch detection electrode on a substrate; forming a pattern of a first metal wiring layer which is at least electrically connected with the first touch detection electrode, in the frame area of the substrate; forming a pattern of the first insulating layer on the side, far away from the substrate, of the first metal wiring layer; forming a pattern of a second touch detection electrode on the side, far away from the substrate, of the first insulating layer; and forming a pattern of a second metal wiring layer which is at least electrically connected with the second touch detection electrode, in the frame area of the substrate.

Description

technical field [0001] The invention relates to the field of touch technology, in particular to a touch screen, a manufacturing method thereof, and an external touch screen. Background technique [0002] Since the rise of touch technology, its popularity has become higher and higher. According to different sensing methods, touch screens can be roughly divided into four types: resistive, capacitive, infrared, and acoustic. Among them, resistive and capacitive are currently the most used in the market, and it may be difficult for other technologies to catch up in the short term. With people's recognition of touch experience, capacitive screens are gradually replacing resistive screens. Among them, capacitive touch screens can be divided into mutual capacitive touch screens and self-capacitive touch screens. Because mutual capacitive touch screens can realize multi-touch, mutual capacitive touch screens are called the mainstream and future development trend in the touch screen...

AI Technical Summary

Problems solved by technology

At present, some TP manufacturers have begun to produce single layer on cell (SLOC) products. SLOC products have attracted much attention because of their simple manufacturing process and low manufacturing cost. Because both the touch area and the wiring area are made of Indium Tin Oxide (ITO) material, due to the high square resistance of ITO, the channel impedance is too large, and it is impossible to realize large-scale multi-touch. Before, it was impossible to popularize and apply it on a large scale; in addition, touch manufacturers used OC materials as insulating layers and designed via holes in OC materials to reduce the number of masks, and solved the problem of shadow disappearance by using ITO bridges instead of metal bridges, making conventional The 6 mask version (Mask) becomes 5Mask

However, these designs cannot fundamentally and substantially reduce research and development costs, reduce production costs, improve product comprehensive competitiveness, and solve bridge point visibility problems

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